Process cartridge

Abstract

Disclosed in the present invention is a process cartridge, comprising a developing roller, a photosensitive drum, and a charging component capable of charging the photosensitive drum, and further comprising an adjustment assembly which can receive a first voltage, wherein after the first voltage is adjusted by the adjustment assembly, a second voltage can be output to the charging component, and the first voltage is different from the second voltage.

Description

A process cartridge TECHNICAL FIELD

[0001] The present application relates to the technical field of electrophotographic imaging, and in particular to a process cartridge. BACKGROUND

[0002] The prior art discloses an imaging device and a process cartridge detachably mounted in the imaging device, wherein the process cartridge comprises a first shell, a developing roller, a force receiving member and a partition supported on the first shell, a photosensitive drum supported on a second shell, when the process cartridge performs a printing task, the developing roller and the photosensitive drum are in pressure contact with each other, and the developing roller can deliver the developer carried thereon to the photosensitive drum to develop the latent image on the photosensitive drum; when the process cartridge does not perform a printing task, the force receiving member can push the first shell to move relative to the second shell, and then the partition supported on the first shell is moved to a position abutting against the second shell, so that the separation state of the developing roller and the photosensitive drum can be stably maintained, and the continuous delivery of the developer on the developing roller of the process cartridge which does not perform a printing task to the photosensitive drum is avoided to affect the printing quality of the process cartridge; however, when the process cartridge frequently switches between performing a printing task and not performing a printing task, the frequently moving partition may have a certain probability of being stuck or not moving to the position, thereby affecting the printing process of the process cartridge. SUMMARY

[0003] To solve the above problems, the present application provides a new process cartridge, which is mainly realized by the following technical scheme:

[0004] A process cartridge, comprising:

[0005] a developing roller;

[0006] a photosensitive drum;

[0007] a charging component, which can charge the photosensitive drum;

[0008] further comprising an adjusting assembly, which can receive a first voltage, and the first voltage can output a second voltage to the charging component after being adjusted by the adjusting assembly, wherein the first voltage is different from the second voltage.

[0009] Further, the absolute value of the first voltage is less than the absolute value of the second voltage.

[0010] Further, further comprising a power supply component which can output the first voltage, the power supply component is a generator or a battery or an electrode which can receive the voltage of the imaging device.

[0011] Further, further comprising a first coupling component which can receive the driving force rotation of the imaging device, and the power supply component is a generator, and the first coupling component can drive the generator to rotate.

[0012] Further, the first coupling member can drive the developing roller to rotate.

[0013] Further, an electric delay member is further included, and the electric delay member is arranged between the regulating assembly and the charging member in a direction in which the regulating assembly transmits the second voltage to the charging member, and the electric delay member can be used to prolong a time required for the second voltage to be transmitted to the charging member.

[0014] Further, the electric delay member is an inductor, a capacitor, or a resistor.

[0015] Further, a diode is arranged between the electric delay member and the charging member in a direction in which the regulating assembly transmits the second voltage to the charging member.

[0016] A process cartridge, comprising:

[0017] a developing roller;

[0018] a powder feeding roller configured to supply a developer to the developing roller;

[0019] a powder regulating blade configured to regulate a thickness of the developer on a surface of the developing roller;

[0020] a photosensitive drum;

[0021] a charging member configured to contact the photosensitive drum and to charge the photosensitive drum;

[0022] a power electrode electrically connected to the charging member, and the power electrode is electrically connected to at least one of the developing roller, the powder feeding roller, and the powder regulating blade.

[0023] Further, the power electrode is electrically connected to the powder feeding roller and the charging member.

[0024] Further, a force receiving member configured to move in response to a pushing force of an image forming apparatus is further included, and the developing roller is switched between a state of being electrically connected to the power electrode and a state of being electrically disconnected from the power electrode by the movement of the force receiving member.

[0025] Further, a grounding member made of an electrically conductive material is further included, a force receiving member configured to move in response to a pushing force of an image forming apparatus, the grounding member is electrically connected to a grounding portion of the image forming apparatus, and the developing roller is switched between a state of being electrically connected to the grounding portion and a state of being electrically disconnected from the grounding portion by the movement of the force receiving member.

[0026] Further, an electric delay member is provided between the electrode and the charging member in a direction in which the electrode transmits the voltage to the charging member, the electric delay member being an inductor, a capacitor, or a resistor.

[0027] Further, a diode is provided between the electric delay member and the charging member in the direction in which the electrode transmits the voltage to the charging member.

[0028] Further, another electrode electrically connectable to the charging member is further included, and a diode is provided between the other electrode and the charging member.

[0029] A process cartridge detachably mountable in an image forming apparatus having an electrically conductive member, comprising:

[0030] A developing roller;

[0031] A photosensitive drum;

[0032] A charging member to charge the photosensitive drum;

[0033] Further, an electric contact portion electrically contactable with the electrically conductive member, a force receiving member movable in response to a pushing force of the image forming apparatus, the electric contact portion being electrically connectable with the developing roller, the electric connection between the electric contact portion and the developing roller being breakable by the movement of the force receiving member, and a cleaning member in contact with the charging member, the cleaning member being in pressure contact with the charging member and being capable of cleaning the charging member of toner are further included.

[0034] Further, the electrically conductive member is configured as a ground portion of the image forming apparatus, and the process cartridge has a ground member in contact with the ground portion, the ground member being electrically connectable with the developing roller, the developing roller being switchable between a state of being electrically connected with the ground portion and a state of being electrically disconnected from the ground portion by the movement of the force receiving member.

[0035] Further, a chip having a chip electric contact surface is further included, the chip electric contact surface being located at an upper end of the process cartridge opposite to a lower end of the process cartridge when the process cartridge is positioned such that the photosensitive drum is at the lower end of the process cartridge, the photosensitive drum and the electric contact portion being simultaneously located at the lower end of the process cartridge.

[0036] Further, a chip having a chip electric contact surface and a first coupling member to drive the developing roller to rotate are further included, the electric contact portion and the chip electric contact surface being located at the same end of the process cartridge in a length direction of the process cartridge, the electric contact portion and the first coupling member being located at different ends of the process cartridge.

[0037] Further, the electrically conductive member is configured as a power supply member of the image forming apparatus, and the process cartridge further includes a force receiving member configured to receive a pushing force of the image forming apparatus and move, and the developing roller is configured to switch between the state of being electrically connected to the power supply member and the state of being electrically disconnected from the power supply member by the movement of the force receiving member.

[0038] The present application provides a process cartridge, which cancels the partition member in the prior art, and avoids the problem of being stuck. BRIEF DESCRIPTION OF DRAWINGS

[0039] Fig. 1 is a schematic view of the process cartridge in one angle according to the embodiment 1 of the present application;

[0040] Fig. 2 is a schematic view of the process cartridge in another angle according to the embodiment 1 of the present application;

[0041] Fig. 3 is a schematic view of the process cartridge in still another angle according to the embodiment 1 of the present application;

[0042] Fig. 4 is a schematic view of the first end of the process cartridge when the pushing member is in the disengaged position according to the embodiment 1 of the present application;

[0043] Fig. 5 is a schematic view of the second end of the process cartridge when the pushing member is in the disengaged position according to the embodiment 1 of the present application;

[0044] Fig. 6 is a schematic view of the first end of the process cartridge when the pushing member is in the engaged position according to the embodiment 1 of the present application;

[0045] Fig. 7 is a schematic view of the second end of the process cartridge when the pushing member is in the engaged position according to the embodiment 1 of the present application;

[0046] Fig. 8 is a schematic view of the pushing member in the disengaged position according to the embodiment 1 of the present application;

[0047] Fig. 9 is a schematic view of the pushing member in the engaged position according to the embodiment 1 of the present application;

[0048] Fig. 10 is a schematic view of the first end of the process cartridge according to the embodiment 2 of the present application;

[0049] Fig. 11 is a schematic view of the process cartridge according to the embodiment 2 of the present application when the developing roller is in the grounded state;

[0050] Fig. 12 is a schematic view of the process cartridge according to the embodiment 2 of the present application when the developing roller is in the ungrounded state;

[0051] Fig. 13 is a schematic view of the process cartridge according to the embodiment 3 of the present application in still another angle;

[0052] Fig. 14 is a schematic view of the process cartridge according to the embodiment 3 of the present application when the first electrode is in the extended position;

[0053] Figure 15 is a schematic illustration of the process cartridge of embodiment 3 with the first electrode in the retracted position;

[0054] Figure 16 is a schematic illustration of the process cartridge of embodiment 3 with the first electrode in the extended position and with the first bearing portion removed;

[0055] Figure 17 is a schematic illustration of the process cartridge of embodiment 3 with the first electrode in the retracted position and with the first bearing portion removed;

[0056] Figure 18 is a schematic illustration of the second end of the housing of embodiment 3;

[0057] Figure 19 is a schematic illustration of the process cartridge of embodiment 4 from one angle;

[0058] Figure 20 is a schematic illustration of the process cartridge of embodiment 4 from another angle;

[0059] Figure 21 is a schematic illustration of the second end of the housing of embodiment 4 from one angle;

[0060] Figure 22 is a schematic illustration of the first end of the housing of embodiment 4;

[0061] Figure 23 is a schematic illustration of the second end of the housing of embodiment 4 from another angle;

[0062] Figure 24 is a schematic illustration of the process cartridge of embodiment 4 from one angle;

[0063] Figure 25 is a schematic illustration of the process cartridge of embodiment 4 from another angle;

[0064] Figure 26 is a schematic illustration of the power transfer of the process cartridge of embodiment 4 without a voltage regulating device;

[0065] Figure 27 is a schematic illustration of the process cartridge of embodiment 4 in cross-section;

[0066] Figure 28 is a simplified schematic illustration of the process cartridge of embodiment 5 with a voltage regulating device;

[0067] Figure 29 is a schematic illustration of the power transfer of one embodiment of the process cartridge of embodiment 5 with a voltage regulating device;

[0068] Figure 30 is a schematic illustration of the power transfer of another embodiment of the process cartridge of embodiment 5 with a voltage regulating device;

[0069] Figure 31 is a schematic illustration of the process cartridge of embodiment 5 with a voltage regulating device;

[0070] Figure 32 is a schematic illustration of the process cartridge of embodiment 5 with a voltage regulating device with the cover member separated from the first housing;

[0071] FIG. 33 is a schematic view of a gear train of the process cartridge having the voltage adjustment device according to Embodiment 5 of the present application;

[0072] FIG. 34 is a schematic view of a first unit of the process cartridge having the voltage adjustment device according to Embodiment 5 of the present application;

[0073] FIG. 35 is an exploded schematic view of the first unit of the process cartridge having the voltage adjustment device according to Embodiment 5 of the present application;

[0074] FIG. 36 is an exploded schematic view of the gear train of the process cartridge having the voltage adjustment device according to Embodiment 5 of the present application;

[0075] FIG. 37 is a schematic view of the process cartridge according to Embodiment 6 of the present application;

[0076] FIG. 38 is a schematic view of the process cartridge according to Embodiment 6 of the present application;

[0077] FIG. 39 is a schematic view of the process cartridge mounted in the tray of the image forming apparatus according to Embodiment 6 of the present application;

[0078] FIG. 40 is an exploded schematic view of the process cartridge according to Embodiment 6 of the present application;

[0079] FIG. 41 is a schematic view of the power delivery member according to Embodiment 6 of the present application;

[0080] FIG. 42 is a schematic view of the power delivery member according to Embodiment 6 of the present application;

[0081] FIG. 43 is a schematic view of the gear train of the process cartridge according to Embodiment 7 of the present application;

[0082] FIG. 44 is a schematic view of the process cartridge according to Embodiment 8 of the present application;

[0083] FIG. 45 is a schematic view of the clutch mechanism when the process cartridge according to Embodiment 8 of the present application is performing a print job;

[0084] FIG. 46 is a schematic view of the clutch mechanism when the process cartridge according to Embodiment 8 of the present application is not performing a print job;

[0085] FIG. 47 is an exploded schematic view of the clutch mechanism according to Embodiment 8 of the present application;

[0086] FIG. 48 is a cross-sectional view of the clutch mechanism when the process cartridge according to Embodiment 8 of the present application is performing a print job;

[0087] FIG. 49 is a cross-sectional view of the clutch mechanism when the process cartridge according to Embodiment 8 of the present application is not performing a print job;

[0088] FIG. 50 is a schematic view of the process cartridge cooperating with the push portion of the image forming apparatus according to Embodiment 9 of the present application when the push portion is in an intermediate position;

[0089] Figure 51 is a schematic view of the engagement of the process cartridge of Figure 50 with the image forming apparatus of Figure 50 when the pusher portion of the image forming apparatus is in a first pusher position;

[0090] Figure 52 is a schematic view of the engagement of the process cartridge of Figure 50 with the image forming apparatus of Figure 50 when the pusher portion of the image forming apparatus is in a second pusher position;

[0091] Figure 53 is a schematic view of the process cartridge of Figure 50 at an angle;

[0092] Figure 54 is a schematic view of the process cartridge of Figure 50 at another angle;

[0093] Figure 55 is a schematic view of the process cartridge of Figure 50 at yet another angle;

[0094] Figure 56 is a schematic view of the first unit and the second unit of the process cartridge of Figure 50;

[0095] Figure 57 is a schematic view of the contact between the powder outlet blade and the photoconductor of the process cartridge of Figure 50;

[0096] Figure 58 is a schematic view of the process cartridge of Figure 50 in cross-section. DETAILED DESCRIPTION

[0097] Example 1

[0098] To facilitate the description of the process cartridge 500 of the present application, the various directions of the process cartridge 500 will be defined as follows. The direction of the extension of the axis of rotation of the developing roller 501 (developing roller rotation axis) is the first direction. The housing 510 has opposite first and second ends in the first direction. The first coupling member 521 and the second coupling member 522 are provided at the first end of the housing 110. The chip electrical contact surface 513a is also provided at the first end of the housing 510.

[0099] As shown in Figures 1-18, a process cartridge 500 is disclosed in the present application which is removably installed in an image forming apparatus having a power supply member, an electrical contact and a drive force applying member, a pusher assembly. In the present application, the image forming apparatus is an electrophotographic image forming apparatus (printer).

[0100] As shown in FIG. 1, the processing cartridge 500 includes a developing unit and a drum unit connected to each other, the developing unit includes a first casing 510a, the drum unit includes a second casing 510b, the casing 510 includes the first casing 510a and the second casing 510b, the first casing 510a can accommodate a developer, the second casing 510b includes a first cover 511 disposed at a first end, a second cover 512 disposed at a second end, and a main body portion 518 accommodating waste developer located at least partially between the first cover 511 and the second cover 512, at least one of the first cover 511 and the second cover 512 is integrally formed with the main body portion 518, which can not only reduce the number of molds, but also improve the assembly efficiency, thereby reducing the production cost of the processing cartridge 500; further, the first cover 511, the second cover 512 and the main body portion 518 are integrally formed, which can further reduce the production cost of the processing cartridge 500 and improve the assembly efficiency of the processing cartridge 500.

[0101] The developing unit includes a developing roller 501 supported on the first casing 510a, a powder feeding roller and a powder outlet knife, the drum unit further includes a photosensitive drum 502 supported on the second casing 510b and a charging member (not shown in the drawing), the charging member is preferably a rotatable charging roller, wherein when the processing cartridge 500 performs a printing work, the developing roller 501 carries a developer, the charging roller can uniformly charge the photosensitive drum 502, the charged photosensitive drum 502 is selectively irradiated by a laser in the image forming apparatus (exposure) to form an electrostatic latent image on the outer surface of the photosensitive drum 502, so that the developing roller can deliver the developer carried thereon to the photosensitive drum 502 to develop the electrostatic latent image thereon and form a developer image on the photosensitive drum 502 by the contact between the developing roller and the photosensitive drum 102, then the developer image can be transferred to a transfer belt by the contact between the photosensitive drum 502 and the transfer belt, finally the transfer belt can transfer the developer image to a recording medium (such as paper).

[0102] Further, the processing cartridge 500 further includes a first coupling member 521 (a first coupling protrusion 521) and a second coupling member 522 (a second coupling protrusion 522) disposed at a first end of the casing 510, the first cover 511 can cover at least a portion of the first coupling member 521 and / or the second coupling member 522 to position the first coupling member 521 and / or the second coupling member 522, the first coupling member 521 and the second coupling member 522 can be coupled with a first driving force applying member and a second driving force applying member of the image forming apparatus respectively, and can be rotated by receiving the output of the rotational driving force, thereby driving the developing roller 501 and the photosensitive drum 502 to rotate respectively.

[0103] Further, the processing cartridge 500 further comprises a chip 513 and a first electrode 568, the chip 513 has a chip electric contact surface 513a, the first electrode 568 has a first electrode electric contact surface, in the first direction, the chip electric contact surface 513a is arranged at the first end of the housing 510, i.e. at the same end of the housing 510 as the first coupling component 521 or the second coupling component 522 in the first direction, and the first electrode electric contact surface is arranged at the second end of the housing 510 and is configured to be in a plane substantially perpendicular to the first direction, thus in the first direction, the interval distance between the two is large, which helps to avoid the first electrode electric contact surface and the chip electric contact surface 513a from interfering with each other when they are in contact with the imaging device respectively, thereby affecting the printing quality of the processing cartridge 500; in the second direction (up-down direction), the chip electric contact surface 513a of the chip 513 is arranged at the upper end of the processing cartridge. Further, the processing cartridge 500 further comprises a chip holder 515 for supporting the chip 513, the chip holder 515 is detachably mounted on the first cover 511 of the housing 510, so that when the processing cartridge 500 is assembled, the chip 513 and the chip holder 515 can be installed on the processing cartridge 200 as a chip assembly, which helps to improve the assembly efficiency of the chip 513 and avoids the problem that the small chip 513 is difficult to assemble.

[0104] When the imaging device needs to perform the task of printing black pages, the processing cartridge 500 containing black developer normally works, and when developing, the third power supply component of the imaging device can supply power to the charging roller to charge the photosensitive drum 502, but the processing cartridge 500 containing color developers (such as magenta, yellow, and blue) needs to be inoperative to avoid color mixing during printing. To achieve this purpose, in the prior art processing cartridge, when the processing cartridge containing color developers is not required to participate in development, the processing cartridge can receive the pushing force of the imaging device to separate the developing roller from the photosensitive drum to avoid the color developers on the developing roller being transferred to the photosensitive drum, but the developing roller 501 of the processing cartridge 500 in the embodiment is in continuous contact with the photosensitive drum 502, in order to avoid the developers on the developing roller 501 being transferred to the photosensitive drum 502 by potential difference, further, the processing cartridge 500 further comprises a control assembly, which can be used to control the grounding or non-grounding state of the developing roller 501 and the powder feeding roller (not shown in the figure), to inhibit the developers carried by the developing roller 501 from being transferred to the photosensitive drum 502, so that the printing quality of the processing cartridge 500 is not affected under the condition that the developing roller 501 is in contact with the photosensitive drum 502. The structure of the control assembly will be described in detail.

[0105] As shown in FIGS. 2-4, the processing cartridge 500 includes a force receiving member 540 movably arranged on the first housing 510a or the second housing 510b, the force receiving member 540 includes a first force receiving portion 540b1 and a second force receiving portion 540b2, the first force receiving portion 540b1 and the second force receiving portion 540b2 are integrally formed so as to reduce the number of molds used in production and reduce production cost, however, the first force receiving portion 540b1 and the second force receiving portion 540b2 can still be a structure formed separately, for example, the first force receiving portion 540b1 is arranged in a first unit having the first housing 510a, and the second force receiving portion 540b2 is arranged on the force receiving member 540, which is not limited.

[0106] The force receiving member 540 can receive an external force from a pushing portion of the image forming apparatus, and can rotate relative to the first housing 510a or the second housing 510b between a first position and a second position, at least a portion of the force receiving member 540 in the first position is closer to the photosensitive drum 502 than the force receiving member 540 in the second position; further, as shown in FIGS. 8-9, the processing cartridge 500 further includes a push protrusion 541, the push protrusion 541 is configured to protrude outwardly from an outer surface of the force receiving member 540 towards a direction close to the second end of the housing 510, the push protrusion 541 can move in response to the movement of the force receiving member 540 when the force receiving member 540 is moved by the pushing portion of the image forming apparatus; further, the push protrusion 541 has a push inclined surface 541a arranged transversely to the first direction, which can be used to guide and push the pushing member 562 (to be described in detail below) so that the pushing member 562 moves in the first direction from the position shown in FIG. 8 to the position shown in FIG. 9; further, the force receiving member 540 further includes a retaining portion 540a configured as a protrusion, the retaining portion 540a can move following the movement of the force receiving member 540, when the first force receiving portion 540b1 receives the pushing force of the pushing portion of the image forming apparatus and the force receiving member 540 moves from the first position to the second position, the retaining portion 540a also moves, then the pushing portion is removed from the first force receiving portion 540b1 under the control of the image forming apparatus, the retaining portion 540a abuts against the first housing 510a or the second housing 510b, and can retain the position of the force receiving member 540 relative to the housing 510, so as to avoid the movement of the force receiving member 540, and the developing drum 501 and the photosensitive drum 502 will always remain in contact during the movement of the force receiving member 540; further, the pushing member 562 is made of a conductive material, which can be a plastic material with conductive material, or can be made of a metal material with higher strength.

[0107] Further, the pushing member 562 is configured as a rod extending from the first end of the housing 510 to the second end of the housing, and the pushing member 562 can also be composed of multiple rod segments, which will not be described herein; the pushing member 562 includes a forced pushing portion 562a and an electrical contact portion 562b, in the first direction, the forced pushing portion 562a is arranged at the first end of the pushing member 562, and the electrical contact portion 562b is arranged at the second end of the pushing member 562; specifically, the forced pushing portion 562a can be in contact with the forced pushing inclined surface 541a of the forced pushing protrusion 541 of the force receiving member 540 and can be forced to move by the forced pushing inclined surface 541a, so that the pushing member 562 moves in the first direction from the first end of the housing 510 towards the second end of the housing 510, so that the pushing member 562 moves from the disengaged contact position shown in FIG. 8 to the contact position shown in FIG. 9, when the pushing member 562 is in the disengaged contact position shown in FIG. 8, the electrical contact portion 562b is disengaged from the conductive member 563 (to be described below) and is separated by a distance; when the pushing member 562 is in the contact position, the electrical contact portion 562b is in contact with the conductive member 563.

[0108] The processing cartridge 500 further includes a conductive member 563, in the first direction, the conductive member 562 is arranged at the second end of the housing 510, one end of the conductive member 562 can be in contact with the electrical contact portion 562b, and the other end can be in contact with the first grounding surface of the first grounding member 553, that is, the conductive member 563 can be used as an intermediate electrical connection member to electrically connect the pushing member 562 and the first grounding member 553, so as to achieve the grounding and non-grounding of the developing roller 501 and the powder feeding roller; further, the conductive member 563 can be made of a plastic material, or a metal material preferred in this embodiment to improve the strength and electrical stability of the conductive member 563.

[0109] Further, the processing cartridge 500 further includes a second bearing portion 567 arranged at the second end of the housing 510, which can not only be used to support the second end of the pushing member 562, but also rotatably support the developing roller 501 and the powder feeding roller; further, the second bearing portion 567 is made of a conductive material.

[0110] When the pusher 562 is located at the contact position as shown in Fig. 9, the electric contact portion 562b is in contact with the conductive member 563, so that the pusher 562 is electrically connected with the first grounding member 553, i.e. the grounding effect of the pusher 562 is realized, and since the pusher 562 is supported on the second bearing portion 567 which is electrically conductive and which rotatably supports the developing roller 501 and the powder feeding roller, the developing roller 501 and the powder feeding roller are electrically connected with the first grounding member 553, and the grounding effect of the developing roller 501 and the powder feeding roller is realized; when the pusher 562 is located at the disengagement position, the electric contact portion 562b is separated from the conductive member 562 by a distance, so that the first grounding member 553 cannot be electrically connected with the pusher 562 through the conductive member 562, and the grounding effect of the developing roller 501 and the powder feeding roller cannot be realized, and at this time, the developing roller 501 and the powder feeding roller can normally receive the electric power from the first electrode 568 at the second end of the housing 510, and normal printing can be realized.

[0111] Further, the processing cartridge 500 further comprises a first elastic member 564 arranged at the second end of the pusher 562, and the first elastic member 564 is preferably a compression spring, and the elastic force generated by the compression of the first elastic member 564 can be applied to the pusher 562, and the first elastic member 564 can be used to reset the pusher 562 after the pusher 562 is moved, i.e. the pusher 562 can be moved from the contact position to the disengagement position.

[0112] Next, the cooperation process between the force receiving member 540 and the control assembly in the embodiment will be described in detail, and the technical effect of controlling the grounding or non-grounding of the developing roller 501 and the powder feeding roller is realized.

[0113] When the process cartridge 500 is performing a printing task, the developing roller 501 is in contact with the photosensitive drum 502 as shown in FIG. 4, FIG. 5, FIG. 8, at this time, the force receiving member 540 is located at the first position, the urging member 562 is located at the disengaged position, i.e. the electric contact portion 562b is disengaged from the electrically conductive member 563, the developing roller 501 is not grounded with the powder feeding roller. When the process cartridge 500 is not required to perform a printing task, the first force receiving portion 540b1 of the force receiving member 540 is urged by the urging portion of the urging assembly of the image forming apparatus, so that the force receiving member 540 is rotated from the first position as shown in FIG. 4, FIG. 5, FIG. 8 to the second position as shown in FIG. 6, FIG. 7, FIG. 9, during the rotation of the force receiving member 540, the urging inclined surface 541a of the urging protrusion 541 urges the urged portion 562a of the urging member 562, so that the urging member 562 is moved from the disengaged position to the engaged position in the first direction against the elastic force of the first elastic member 564, the electric connection between the electric contact portion 562b and the electrically conductive member 563 is achieved by the urging member 562, since the electrically conductive second bearing portion 567 supports the developing roller 501, the powder feeding roller and the urging member 562 at the same time, the electric connection between the developing roller 501 and the powder feeding roller and the urging member 562 is achieved, so that the developing roller 501 and the powder feeding roller are grounded, and the transfer of the developer is inhibited. It is worth mentioning that after the force receiving member 562 is moved from the first position to the second position, the retaining portion 540a of the force receiving member 540 can be used to retain the position of the force receiving member 540, i.e. the position of the urging member 562 in the first direction is retained, so that the electric contact portion 562b and the electrically conductive member 563 are in stable contact. When the process cartridge 500 is required to perform a printing task again, the second force receiving portion 540b2 of the force receiving member 540 can be urged by the urging assembly of the image forming apparatus, the stable position of the force receiving member 540 retained by the retaining portion 540a is broken, the force receiving member 540 is moved from the second position to the first position, during the movement of the force receiving member 540, the urged portion 562a of the urging member 562 loses the support of the urged protrusion 541 of the force receiving member 540, at this time, the elastic force of the first elastic member 564 is released and applied to the urging member 562, so that the urging member 562 is moved from the engaged position to the disengaged position in the first direction, i.e. the electric contact portion 562b and the electrically conductive member 563 are not electrically connected at this time, the urging member 562 is not grounded, so that the developing roller 501 and the powder feeding roller can normally receive the electric power from the first electrode 568, and the process cartridge 500 can normally perform a printing task.

[0114] Embodiment 2

[0115] As shown in Figs. 10-12, the embodiment 2 of the present application will be introduced next, in which a process cartridge 800 is shown, which is the same as the process cartridge 800 of the above-mentioned embodiment 1, and the same parts will not be described again here, and the difference is that the structure of the developing roller contact with electricity and the ground or not is different.

[0116] In the process cartridge 800, in order to simplify the structure, the pushing member and other components are not provided again. Specifically, the process cartridge 800 further comprises a second grounding member 850 provided at the first end of the housing, which is preferably made of electrically conductive metal material, and the second grounding member 850 is supported and mounted on the force receiving member 840, which makes the second grounding member 850 move between the first position and the second position in response to the rotation of the force receiving member 840. The second grounding member 850 comprises a first contact portion 851 and a second contact portion 852 respectively located at two ends thereof. When the process cartridge 800 needs to perform a printing task, i.e. the force receiving member 840 is located at the first position, the second contact portion 852 is in contact with the grounding portion of the first end of the image forming apparatus, and the grounding portion of the image forming apparatus (which can also be referred to as an electrically conductive component) can be a metal portion of the cartridge frame or other components in the image forming apparatus, as long as it can play the technical effect of grounding. However, the first contact portion 851 is in contact with the first bearing portion 860 provided at the first end of the housing, which is rotatable and supports the developing roller 808 and the powder feeding roller, and is electrically conductive. This makes the first bearing portion 860 and the developing roller 808 and the powder feeding roller supported on the first bearing portion 860 unable to achieve grounding, so that the developing roller 808 and the powder feeding roller can normally perform printing.

[0117] When the process cartridge 800 does not need to perform a printing task, i.e. the force receiving member 840 is located at the second position, the second contact portion 852 is still in contact with the grounding portion of the image forming apparatus, and the first contact portion 851 is in contact with the first bearing portion 860, which makes the first bearing portion 860 and the developing roller 808 and the powder feeding roller supported on the first bearing portion 860 can achieve grounding, so that the transfer of the developer from the developing roller 808 to the photosensitive drum 802 can be inhibited.

[0118] Further, in order to ensure that the second contact portion 852 and the grounding portion of the image forming apparatus maintain stable contact, preferably, a portion of the second grounding member 850 close to the second contact portion 852 can be elastically deformed.

[0119] Therefore, the process cartridge 800 of the present embodiment, by providing the second grounding member 850 at the first end of the housing, achieves similar technical effects to the technical solutions in the above-mentioned embodiment 1, while further simplifying the structure of the process cartridge 800 and reducing the production cost.

[0120] Embodiment 3

[0121] As shown in FIGS. 13-18, an embodiment 3 of the present application is shown, in which a process cartridge 500 is shown. The process cartridge 500 is the same as the process cartridge in the above-described embodiment 1, and thus, the same parts will not be described again. However, a new technical solution is provided to inhibit the transfer of the developer from the developing roller 501 to the photosensitive drum 502.

[0122] The process cartridge 500 includes a first electrode 568 that is retractable in a first direction to disconnect the electric connection between the powder feeding roller, the developing roller 501 and the image forming apparatus when the process cartridge 500 does not perform a printing task. In particular, the process cartridge 500 further includes a pushed member 565 that is disposed at the second end of the housing. The pushed member 565 is pushed by the pushing member 562 when the pushing member 562 moves in the first direction from the first end of the housing toward the second end of the housing, so that the pushed member 562 is movable in a direction that is transverse to the first direction. The pushing member 562 is preferably movable in at least a second direction from the fourth end of the housing that is proximate to the photosensitive drum 502 toward the third end of the housing that is distal from the photosensitive drum 502. Further, at least one of the portions of the pushed member 565 and the pushing member 562 that are in contact with each other is configured as a slope, which can improve the smoothness of the pushing.

[0123] Further, the first electrode 568 can pass through a hole 567a provided on the second bearing portion 567, so that a first electrode contact portion 568a of the first electrode 568 is exposed outside the process cartridge 500, so that the first electrode contact portion 568a can be electrically connected with a power supply component (may also be referred to as a conductive part) of the image forming device; in particular, the first electrode 568 includes a connecting portion 568c configured as an elastic buckle, the first electrode 568 is connected with the second bearing portion 567 through the connecting portion 568c, so that the first electrode 568 is movably and detachably mounted on the second bearing portion 567; the second bearing portion 567 further includes a pushed portion 568b configured as an inclined surface and can be pushed by the pushing member 565, so that the first electrode 568 can be moved from an extended position as shown in FIGS. 14 and 16 to a retracted position as shown in FIGS. 15 and 17 in the first direction, at least a portion of the first electrode 568 in the retracted position is closer to the first end of the housing than the first electrode 568 in the extended position, when the first electrode 568 is in the extended position, the first electrode contact portion 568a of the first electrode 568 is in contact with the power supply component of the image forming device, so that the developing roller 501 and the powder feeding roller can normally receive power from the image forming device, to ensure normal printing of the process cartridge; when the first electrode 568 is in the retracted position, the first electrode contact portion 568a of the first electrode 568 is out of contact with the power supply component of the image forming device, at this time the developing roller 501 and the powder feeding roller cannot receive power from the image forming device, and thus the transfer of the developer of the developing roller 501 to the photosensitive drum 502 can be inhibited.

[0124] Further, the process cartridge 500 further includes a second elastic member 569, which is preferably a compression spring, and is arranged between the first electrode 568 and the housing, so that when the first electrode 568 is in the retracted position and needs to be reset, the second elastic member 569 can apply an elastic force to the first electrode 568, so that the first electrode 568 can be reset to move to the extended position, to perform normal printing.

[0125] When the force receiving member 540 moves from the first position to the second position when the partial process cartridge 500 does not need to perform a printing task, the pushing protrusion 541 of the force receiving member 540 pushes the pushing member 562, so that the pushing member 562 moves in the first direction, so that the first electrode 568 moves from the extended position to the retracted position, disconnecting the electrical connection between the developing roller 501, the powder feeding roller and the image forming device, and also inhibiting the transfer of the developer of the developing roller 501 to the photosensitive drum 502, to avoid printing defects.

[0126] Embodiment 4

[0127] As shown in FIGS. 19-27, the embodiment 4 of the present application will be introduced next, in which a process cartridge 1000 is shown, which is the same as the above-mentioned embodiments 1-3, and the same parts will not be described again, and the different parts are that the structure of the developing roller contact and the structure of the ground or not are different.

[0128] Firstly, as shown in FIGS. 19-24, the process cartridge 1000 further comprises a second electrode 1069 and a third electrode 1014 located at the second end of the housing and separately arranged from the first electrode 1068, the first electrode 1068 and the second electrode 1069 are arranged adjacent to each other, and the first electrode 1068 is closer to the second electrode 1069 than the third electrode 1014, wherein the first electrode 1068 is used to contact and electrically connect to at least one of the developing roller 1001, the powder feeding roller (not shown) and the powder outletting knife (not shown) with the first power supply part of the image forming device, the second electrode 1069 is used to contact and electrically connect to the charging roller 1003 with the second power supply part of the image forming device, and the third electrode 1014 is used to contact and electrically connect to the charging roller 1003 with the third power supply part of the image forming device, and the specific structure of the first electrode 1068, the second electrode 1069 and the third electrode 1014 and the structure of the process cartridge 1000 cooperating with them will be described in detail next.

[0129] As shown in FIG. 24, the first electrode 1068 comprises a first electrode contact part 1068a and a first electrode connecting part 1068b, the first electrode contact part 1068a can contact the first power supply part of the image forming device to receive the power of the first power supply part; the process cartridge 1000 still comprises an electric transmission member 1062 extending from the second end of the housing to the first end of the housing in the first direction, the electric transmission member 1062 is mounted on the first housing and is configured as a rod made of conductive material, the electric transmission member connecting part 1062a of the electric transmission member 1062 located at the second end of the housing keeps in contact with the first electrode connecting part 1068b of the first electrode 1068, that is, the power received by the first electrode 968 from the image forming device can be transmitted to the electric transmission member 1062; the electric transmission member 1062 further comprises an electric transmission member contact part 1062b located at the first end of the housing, the electric transmission member contact part 1062b keeps in contact with the force receiving member 1040, and the force receiving member 1040 is also made of conductive material, therefore, the electric transmission member 1062 can further transmit the power to the force receiving member 1040; when the force receiving member 1040 is in the first position, the force receiving member contact part 1040a of the force receiving member 1040 keeps in electrical connection with the developing roller shaft 1001a of the developing roller 1001 at the first end of the housing, so that the force receiving member 1040 can transmit the power to the developing roller 1001.

[0130] As shown in Figs. 24-25, not only that, the process cartridge 1000 still comprises a first bearing portion 1067 at the first end of the casing, the first bearing portion 1067 is also made of conductive material, the first bearing portion 1067 not only rotatably supports the developing roller shaft 1001a and the powder feeding roller shaft, so that the power transmitted to the developing roller 1001a can be transmitted to the powder feeding roller through the first bearing portion 1067, but also the power on the first bearing portion 1067 can be operable to be transmitted to the powder outlet blade, that is, when the force receiving member 1040 is in the first position, the power received by the first electrode 1068 from the first power supply part of the image forming apparatus can be transmitted to the developing roller 1001, the powder feeding roller and the powder outlet blade 1007 in turn through the electric transmission member 1062, the force receiving member 1040, alternatively, the force receiving member 1040 and the first bearing portion 1067 can be configured as non-conductive material, the power can be transmitted through the transmission member 1062 and then directly transmitted to the developing roller 1001, the powder feeding roller and the powder outlet blade 1007 through other conductive parts, at least a part of the conductive parts can be moved in response to the movement of the force receiving member 1040; when the force receiving member 1040 moves from the first position to the second position, that is, the process cartridge 1000 does not need to perform the printing task, the force receiving member contact portion 1040a of the force receiving member 1040 is out of contact with the developing roller shaft 1001a of the developing roller 1001, so that the power received by the first electrode 1068 from the first power supply part of the image forming apparatus can no longer be transmitted to the developing roller shaft 1001a, and thus can not be transmitted to the developing roller 1001, the powder feeding roller 1005 and the powder outlet blade 1007, so that the developer attached to the developing layer of the developing roller 1001 can be inhibited from being transferred to the photosensitive drum 1002. Alternatively, the developing roller shaft 1001a of the developing roller 1001 in the present embodiment can be made of non-metallic material or insulating material, or the outer surface of the developing roller shaft 1001a is coated with insulating material, the developer bearing layer covering the outer surface of the developing roller shaft 1001a is made of conductive material, so that the power of the first electrode 1068 cannot be transmitted to the developer bearing layer through the developing roller shaft 1001a, but can be transmitted to the developer bearing layer through the contact between the powder outlet blade 1007 and the developer bearing layer, so that the powder outlet blade 1007 can transmit the power to the developer bearing layer, thereby simplifying the power transmission structure, therefore, to achieve the above technical effects, the force receiving member 1040 is configured to disconnect the electrical connection between the powder outlet blade 1007 and the first electrode 1068 by moving from the first position to the second position, thereby indirectly disconnecting the electrical connection between the image forming apparatus and the developing roller 1001.

[0131] Further, to further improve the printing quality, the process cartridge 1000 further comprises a first diode 1072, in the first direction, the first diode 1072 is arranged at the second end of the housing, a first connecting portion 1072a (i.e. the positive portion of the first diode 1072a) of the first diode 1072 is connected on the second end of the developing roller shaft 1001a, a second connecting portion 1072b (i.e. the negative portion of the first diode 1072a) of the first diode 1072 is connected on the ground portion of the image forming apparatus, when the process cartridge 1000 does not perform the printing work, even if the developing roller 1001 at this time cannot receive the electric quantity delivered by the first electrode 1068, but the developer attached on the developing roller 1001 itself may have residual positive charge due to friction, or the electric power from the image forming apparatus is transmitted to the developing roller 1001 through the photosensitive drum 1002, if this part of the charged developer normally participates in the development, then it will reduce the printing quality, and appear defects such as bottom gray, but, since the process cartridge 1000 is provided with the first diode 1072, by using the unidirectional conduction of the first diode 1072, part of the positive charge of the developer attached on the developing roller 1001 can be guided to the ground portion of the image forming apparatus through the first diode 1072, and further through the potential difference between the developing roller 1001 and the photosensitive drum 1002, the trend of the developer of the developing roller 1001 transferring to the photosensitive drum 1002 is inhibited, which helps to improve the printing quality of the process cartridge 1000, but it is worth mentioning that in the present embodiment, the first diode is mainly adopted to further improve the printing quality, it is not a necessary structure, that is, the first diode can also be cancelled.

[0132] Further, as can be known from the above description, the developing roller 1001 of the process cartridge 1000 is in continuous contact with the photosensitive drum, and the third electrode 1014 of the process cartridge 1000 with color developer not involved in the developing process cannot continuously receive power from the third power supply component of the image forming device. Specifically, when the process cartridge 1000 is not involved in the developing process, the third power supply component only supplies power to the process cartridge 1000 for a few seconds to ensure that the photosensitive drum 1002 is still charged before the developing roller 1001 is completely separated from the photosensitive drum 1002, and forms a potential difference with the developing roller 1001 to inhibit the transfer of the developer. After a period of time when the developing roller 1001 is separated from the photosensitive drum 1002, the power on the third electrode 1014 is not continuous. Because the photosensitive drum 1002 cannot receive voltage from the image forming device thereafter, a small amount of color developer can be transferred to the photosensitive drum 1002 by friction between the developing roller 1001 and the photosensitive drum 1002, causing the photosensitive drum 1002 to transfer the color developer to the paper, resulting in a printing color mixing defect. Therefore, to further inhibit the transfer of the developer on the developing roller 1001 to the photosensitive drum 1002 by friction, it is necessary to ensure that there is a certain potential difference between the developing roller 1001 and the photosensitive drum 1002 to inhibit the transfer of the color developer. To this end, the embodiment provides an implementation manner, that is, the charging roller 1003 can be charged by the power delivered by the first electrode 1068 or the second electrode 1069 (whether the process cartridge 1000 with color developer is involved in the developing process or not, the first electrode 1068 or the second electrode 1069 will remain continuously charged). It should be noted that the voltage at which the process cartridge 1000 works is a negative voltage. Since the absolute value of the voltage of the second electrode 1069 is greater than the absolute value of the voltage of the first electrode 1068, to ensure that the voltage of the charging roller 1003 is high enough to make the photosensitive drum 1002 charged to form a large enough potential difference with the developing roller 1001, the embodiment preferably supplies power to the charging roller 1001 through the second electrode 1069.

[0133] Further, as shown in Figs. 24-25, the second electrode 1069 of the process cartridge 1000 not only includes a second electrode contact portion 1069a which can be in contact with the second power supply member of the image forming device, but also includes a second electrode connecting portion 1069b which can be in contact with the third electrode 1014, the second electrode contact portion 1069a and the second electrode connecting portion 1069b are electrically connected by a second electrode intermediate portion 1069c, by this arrangement, the power received by the second electrode 1069 from the second power supply member of the image forming device can also be transmitted to the third electrode 1014, the power of the second electrode 1069 and the third electrode 1014 can be transmitted to the charging roller 1003 through the elastic member 1015 and the charging roller bearing support 1016 which are made of conductive material when the process cartridge 1000 is normally performing the printing task, when the process cartridge 1000 is not performing the printing task, since the third electrode 1014 can no longer receive power from the third power supply member of the image forming device after a few seconds, at this time, the charging roller 1003 can be charged by the power transmitted by the second electrode 1069, so that the charging roller 1003 can still charge the photosensitive drum 1002, so that the photosensitive drum 1002 can still be charged when the process cartridge 1000 is not performing the printing task, at this time, since the potential on the developing roller 1001 is greater than the potential on the photosensitive drum 1002, the movement tendency of the developer to the photosensitive drum 1002 by the electric field force is inhibited, the photosensitive drum 1002 will no longer be contaminated, thereby improving the printing quality of the process cartridge 1000.

[0134] As an alternative, the power received by the second electrode 1069 can not be transmitted to the charging roller 1003 through the third electrode 1014, but a separate conductive path can be provided to transmit the power to the charging roller 1003. Specifically, as shown in FIG. 26, in this scheme, an electrical delay element and a second diode are provided between the second electrode 1069 and the charging roller 1003, the negative electrode of the second diode is electrically connected to the electrical delay element, and the positive electrode is electrically connected to the charging roller. The electrical delay element is preferably an inductor, a capacitor, or a resistor, so as to delay the time required for the power of the second electrode 1069 to be transmitted to the charging roller 1003; a third diode is provided between the third electrode 1014 and the charging roller 1003, the negative electrode of the third diode is electrically connected to the third electrode 1014, and the positive electrode of the third diode is electrically connected to the charging roller 1003; when the processing cartridge performs a color printing task, in the processing cartridge 1000 containing color developers, the power received by the third electrode 1014 from the third power supply component can be transmitted to the charging roller 1003 through the third diode to charge the charging roller 1003, and the charging roller 1003 charges the photosensitive drum 1002 to ensure normal development. At this time, in the processing cartridge 1000 containing color developers, due to the time delay effect of the electrical delay element, compared with the power transmission of the third electrode 1014 to the third diode, the power received by the second electrode 1069 from the second power supply component will be transmitted to the second diode later. Therefore, the charging roller 1003 will first receive power from the third electrode 1014 to charge the photosensitive drum 1002. Since the potential of the second electrode 1069 is greater than that of the third electrode 1014, under the one-way conduction of the second diode, the voltage of the second electrode 1069 cannot be transmitted to the charging roller 1003 with lower voltage at this time, thereby blocking the voltage transmission of the second electrode 1069. This makes the charging roller 1003 at this time only receive power from the third electrode 1014, and cannot receive power from the second electrode 1069, thereby ensuring the power stability of the charging roller 1003.When the imaging device performs a black printing task, in the process cartridge 1000 containing color developing agent, as previously described, the power of the third power supply part is only supplied to the third electrode 1014 for several seconds, during which the voltage of the charging roller 1003 is lower than the voltage of the developing roller 1001, so that the transfer of the developing agent to the photosensitive drum 1002 can be inhibited, and since the voltage of the charging roller 1003 is still less than the voltage received by the second electrode 1069 at this time, the voltage of the second electrode 1069 cannot be transmitted to the charging roller 1003 through the second diode within these few seconds, but when the power of the third power supply part is no longer supplied to the third electrode 1014, the voltage of the charging roller 1003 rapidly drops to 0V, at which time the voltage value of the charging roller 1003 is greater than the voltage value of the second electrode 1069, so that almost at the same time, the second diode will no longer block and allow the voltage of the second electrode 1069 to pass, so that the charging roller 1003 can receive the voltage from the second electrode 1069 to be charged again, so that the photosensitive drum 1002 can be continuously charged, so that the voltage value on the surface of the photosensitive drum 1002 will always be less than the voltage value on the surface of the developing roller 1001, that is, there is always a potential difference between the two to inhibit the transfer of the developing agent. It should be noted that whether printing black or color, the process cartridge containing black developing agent will always participate in developing printing, that is, there is always a potential difference between the photosensitive drum 1002 and the developing roller 1001 to inhibit the transfer of the developing agent, so that the process cartridge containing black developing agent does not need to be provided with the above-mentioned structure for inhibiting the developing agent, which can simplify the structure of the process cartridge containing black developing agent and reduce production costs.

[0135] As can be seen from the above description, the electric connection or disconnection of the developing roller 1001 to the first electrode 1068 of the image forming apparatus in the present embodiment can be switched according to the movement of the force receiving member 1040, it should be noted that the movement of the force receiving member 1040 can also force the developing roller 1001 to be electrically connected or disconnected to the ground part of the image forming apparatus as shown in the above embodiments 1 or 2, and since the charging roller 1003 can receive voltage from the second electrode 1069, the developing roller 1001 can not have to be kept in the grounded state continuously when the process cartridge 1000 is not performing a task, it can not be grounded after being grounded for a period of time, that is, when the force receiving member 1040 is pushed to a state that the developing roller 1001 is grounded, after a period of time, the image forming apparatus completes the machine recognition action, after the pushing force applied on the force receiving member 1040 is removed, the force receiving member 1040 can be reset again under the action of a reset member (not shown in the figure), so that the developing roller 1001 is no longer grounded, and since the charging roller 1003 has voltage at this time, the photosensitive drum 1002 still has a lower voltage than the developing roller 1003 when the process cartridge 1000 is not performing a printing task, and the developer on the developing roller 1001 cannot be transferred to the photosensitive drum 1002.

[0136] Embodiment 5

[0137] As shown in FIGS. 28-36, a process cartridge 1000 in the present embodiment 5 is shown, and the same as the above embodiment 4, the same will not be repeated here, and the difference is that the process cartridge 1000 further comprises a voltage adjusting device for further inhibiting the transfer of the developer to improve the printing quality.

[0138] It should be noted that when the process cartridge 1000 with color developing agent performs a printing task, the third electrode 1014 charges the photosensitive drum 1002 through the charging roller 1003, and the potential difference between the developing roller 1001 and the photosensitive drum 1002 is large enough so that the developing agent on the developing roller 1001 can be transferred to the photosensitive drum 1002 all the time, but since the absolute value of the voltage of the second electrode 1069 is much smaller than that of the third electrode 1014, when the process cartridge 1000 with color developing agent does not perform a printing task, the second electrode 1069 charges the photosensitive drum 1002 through the charging roller 1003, at this time, the voltage difference between the photosensitive drum 1002 and the developing roller 1001 is small, which can cause part of the developing agent on the developing roller 1001 to be transferred to the photosensitive drum 1002, thereby polluting the photosensitive drum 1002 and reducing the printing quality, therefore, in order to further improve the printing quality of the process cartridge 1000, the process cartridge 1000 further comprises a voltage adjusting device 1009, as shown in FIG. 28, the voltage adjusting device 1009 is arranged between the second electrode contact part 1069a and the charging roller 1003 in the power transmission direction of the second electrode 1069, specifically, the voltage adjusting device 1009 can be arranged at the second end of the housing as shown in FIG. 28, or can be arranged at the first end of the housing, that is, the voltage output from the second electrode contact part 1069a can not be electrically connected to the charging roller 1003 at the second end of the housing, but can be transmitted through the electric transmission piece 1062 and then electrically connected to the charging roller 1003 at the first end of the housing, which is not limited; specifically, the voltage adjusting device 1009 can increase the absolute value of the voltage received by the second electrode 1069 from the image forming apparatus, thereby increasing the absolute value of the voltage received by the charging roller 1003, and finally, the absolute value of the voltage of the photosensitive drum 1002 can also be increased accordingly, which increases the voltage difference between the photosensitive drum 1002 and the developing roller 1001, and further suppresses the transfer of the developing agent on the developing roller 1001 to the photosensitive drum 1002, thereby improving the printing quality; however, the absolute value of the voltage value increased by the voltage adjusting device 1009 should not be too high, if the absolute value of the voltage value received by the third electrode 1014 is increased too much, it is easy to adversely affect the performance of the photosensitive drum 1002 when the charging roller 1003 charges the photosensitive drum 1002, thereby affecting the latent image of the photosensitive drum 1002, which will undoubtedly be counterproductive and reduce the printing quality of the process cartridge 1000, therefore, the voltage value increased by the voltage adjusting device 1009 should be appropriate; define the absolute value of the voltage increased by the voltage adjusting device as P, 50V

[0139] More specifically, as shown in Figs. 31-36, the voltage regulating device 1009 comprises a power supply component 1091 and a regulating component 1092, preferably, the power supply component 1091 and the regulating component 1092 are supported in a receiving cavity 1010a1 on the upper end of the first casing 1010a, both can be covered by at least a part of the cover member 1008 which is detachably mounted on the first casing 1010a, to protect the power supply component 1091 and the regulating component 1092 from being damaged, alternatively, the power supply component 1091 and the regulating component 1092 can also be mounted in the second casing 1010b, or one of them is mounted in the first casing 1010a and the other is mounted in the second casing 1010b, which is not limited; wherein the power supply component 1091 can adopt a power source component with electricity storage function such as a battery to supply power to the regulating component 1092, or can adopt a power generation component to supply power to the regulating component 1092, a preferred embodiment of the present embodiment is that the power supply component 1091 is a generator which can convert mechanical energy into electrical energy to supply electrical energy to the regulating component 1092, the source of mechanical energy can come from the rotatable components in the process cartridge 1000, for example: the first coupling component 1020 which can receive the rotational driving force of the image forming device, the developing roller 1001, the powder feeding roller, or the developing roller gear provided at one end of the developing roller 1001, the powder feeding roller gear provided at one end of the powder feeding roller, the charging roller 1003, the photosensitive drum 1002 or the second coupling component 1021 for driving the photosensitive drum to rotate, which is not limited, but as a preferred embodiment, the power generation component 1091 is configured to receive the driving force of the first coupling component 1020 for driving the developing roller 1001 to rotate to convert mechanical energy into electrical energy.

[0140] Specifically, the first end of the first casing 1010a of the process cartridge 1000 is provided with the first coupling component 1020, the first transmission gear 1021, the second transmission gear 1022 and the third transmission gear 1023, wherein the first transmission gear 1021 is coaxially arranged with the first coupling component 1020 and can receive the driving force of the first coupling component 1020 to rotate, the third transmission gear 1023 is connected to the driving shaft 1091a of the power generation component 1091, the second transmission gear 1022 is engaged between the first transmission gear 1021 and the third transmission gear 1023, the driving force received by the first coupling component 1020 from the image forming device can be transmitted in sequence via the first transmission gear 1021, the second transmission gear 1022 and the third transmission gear 1023, and finally drive the driving shaft 1091a of the power generation component 1091 to rotate through the third transmission gear 1023, the power generation component 1091 generates electrical energy through the work of the stator, rotor and other components in its interior, and then supplies power to the regulating component 1092; it is worth mentioning that the number of transmission gears in the present embodiment is not limited, which can be 3 as in the above embodiment, or 1-2 or more than 3.

[0141] As shown in FIG. 30, the adjusting assembly 1092 includes inductance, winding coil, output capacitor and other components for boosting the absolute value of the initial voltage output by the power supply assembly 1091, and the voltage reaches the predetermined value after the boosting of the adjusting assembly 1092. The negative terminal of the adjusting assembly 1092 is electrically connected to the charging roller 1003, and the positive terminal of the adjusting assembly 1092 is electrically connected to the ground, so that the adjusting assembly 1092 can output negative electricity to the charging roller 1003, thereby achieving the effect of stably charging the photosensitive drum 1002.

[0142] When the imaging device performs high-quality color printing, the printing time of a single page will be longer, at this time, the driving head of the imaging device rotates slowly, and then the rotation speed of the driving shaft 1091a of the power generation assembly 1091 will be slower, so that the absolute value of the output voltage of the power generation assembly 1091 is lower, and the voltage adjusting device 1009 cannot be boosted to the predetermined value, which will cause the printing quality to decline. Therefore, in order to avoid this problem and further improve the printing quality, one implementation manner is to preset the absolute value of the output voltage of the voltage adjusting device 1009 as 600-1500V, so that even when the rotation speed of the first coupling assembly 1020 is slow, the electricity generated by the power generation assembly 1091 can also make the voltage adjusting device 1009 reach the predetermined value, so as to realize normal power supply for the charging roller 1003. When the rotation speed of the first coupling assembly 1020 is normal, the electricity generated by the power generation assembly 1091 will not make the absolute value of the output voltage of the voltage adjusting device 1009 too high, thereby avoiding the risk of the photosensitive drum 1002 being broken down by the high voltage;

[0143] In the scheme, another implementation manner is provided, as shown in FIG. 29. On the basis of the processing cartridge 1000 provided with the voltage adjusting device 1009, the third electrode 1014 is reserved in the embodiment, and a third diode is connected between the third electrode 1014 and the charging roller 1003, wherein the negative electrode of the third diode is electrically connected to the third electrode 1014, and the positive electrode of the third diode is electrically connected to the charging roller 1003; and an electric delay element and a fourth diode are further arranged between the adjusting assembly 1092 and the charging roller 1003, wherein the negative electrode of the fourth diode is electrically connected to the electric delay element, and the positive electrode of the fourth diode is electrically connected to the charging roller 1003; when the image forming device performs a high-quality color page printing task, the image forming device can normally supply the third electrode 1014 with a voltage value, and the voltage can be supplied to the charging roller 1003 through the third diode, so as to charge the photosensitive drum 1002, and achieve the technical effect of inhibiting the toner of the developing roller 1001 from transferring to the photosensitive drum 1002; it should be noted that after the power generating component 1091 generates electricity, the voltage is supplied to the voltage adjusting device 1009 first, and after being adjusted by the voltage adjusting device 1009, the output voltage of the voltage adjusting device 1009 is delayed by the electric delay element first, and then is transmitted to the next step, while the electric delay element is not arranged on the conductive path from the third electrode 1014 to the charging roller 1003, and thus the charging roller 1003 is reached first and is charged. Since the rotation speed of the driving head in the color processing cartridge 1000 is slow when the high-quality color printing task is performed, the voltage adjusting device 1009 cannot output the voltage with the predetermined value, that is, the absolute value of the voltage output by the adjusting assembly is smaller than the absolute value of the voltage received by the third electrode 1014 from the image forming device, but since both of them are negative voltages, that is, the voltage output by the adjusting assembly is greater than the voltage received by the third electrode 1014 from the image forming device, that is, the voltage on the charging roller 1003 is smaller than the voltage of the negative electrode of the fourth diode, and due to the one-way conduction of the fourth diode, the voltage output by the voltage adjusting device 1009 is blocked by the fourth diode, and thus the voltage cannot be transmitted to the charging roller 1003, that is, when the image forming device performs the high-quality color printing, the charging roller 1003 can be supplied with electricity only by the third electrode 1014, and cannot be supplied with electricity by the voltage adjusting device 1009, so as to avoid the problem of short circuit; optionally, the electric delay element can be arranged between the adjusting assembly 1092 and the fourth diode, and the electric delay element can be arranged between the third electrode 1014 and the third diode, and the same technical effect can be achieved; when the image forming device performs a black printing task, the scheme is the same as the scheme of being supplied with electricity by the voltage adjusting device 1009 in the above embodiment, and thus the description is omitted here; further, in order to simplify the structure and facilitate installation, the electric delay element and the fourth diode can be installed or integrated in the voltage adjusting device 1009.

[0144] Example 6

[0145] As shown in FIGS. 37-42, the embodiment 6 in the present embodiment is shown, for the same as the process cartridge in the above embodiments, the following will not be described, the difference is that, when the process cartridge 1000 performs the printing task of black and white page, the power of the charging roller 1003 of the process cartridge 1000 with color developer comes from another process cartridge.

[0146] When the operator only prints black and white pages, only the process cartridge 1000K with black developer (hereinafter referred to as black process cartridge) participates in printing, and the process cartridge 1000 with color developer (hereinafter referred to as color process cartridge) no longer participates in the development work. The third electrode 1014 on the black process cartridge 1000K can receive power from the printer to charge the charging roller 1003 thereon, but since the developing roller 1001 and the photosensitive drum 1002 in the present embodiment are always in contact after the process cartridge 1000 is installed in the image forming device, since the color process cartridge 1000 does not work, the third electrode 1014 provided thereon cannot continuously receive power from the image forming device, and the charging roller 1014 cannot continuously charge, and the photosensitive drum 1002 cannot be charged, and since the developing roller 1001 also does not have power or has negative voltage, the developing roller 1001 and the photosensitive drum 1002 can be transferred to the photosensitive drum 1002 by friction or potential difference, thereby polluting the photosensitive drum 1002 of the color process cartridge 1000, and ultimately resulting in the paper that should only print black pages being attached with color developer, thereby polluting the paper. Therefore, to avoid this situation, the variant of the present embodiment can deliver the power of the third electrode 1014 on the black process cartridge 1000K to the third electrode 1014 of the color process cartridge 1000, so that when the color process cartridge 1000 does not participate in printing, the charging roller 1003 also has power, thereby forming a potential difference between the developing roller 1001 and the photosensitive drum 1002, and inhibiting the transfer of the developer.

[0147] Specifically, the color process cartridge 1000 and / or the black process cartridge 1000K include power delivery members, which include the first power delivery member 1081, the second power delivery member 1014, and the third power delivery member 1082, in the present scheme, the second power delivery member 1014 is the third electrode 1014, in the first direction, the first power delivery member 1081, the second power delivery member 1014, and the third power delivery member 1082 are arranged at the second end of the housing, in the second direction (i.e. the up-down direction), compared with the fourth end of the housing (the end close to the photosensitive drum 1002), the first power delivery member 1081, the second power delivery member 1014, and the third power delivery member 1082 are closer to the third end (the end close to the chip electrical contact surface), in the third direction, the first power delivery member 1081, the second power delivery member 1014, and the third power delivery member 1082 are arranged in sequence and can maintain electrical connection, more specifically, in the process cartridge installation direction of the third direction, at least a part of the first power delivery member 1081 is located upstream of the second power delivery member 1014, and at least a part of the second power delivery member 1014 is located upstream of the third power delivery member 1082.

[0148] Wherein, the first power delivery member 1081 has a first power delivery member electrical contact surface 1081a facing the fifth end of the housing (i.e. the direction in which the process cartridge is supported in the tray 2 and detached from the image forming device), the third power delivery member 1082 has a third power delivery member electrical contact surface 1082a facing the sixth end of the housing (i.e. the direction in which the process cartridge is supported in the tray 2 and installed in the image forming device), when the black process cartridge 1000K and the color process cartridge 1000 are both installed in the tray 2 and the image forming device, the third electrode 1014 can not only deliver power to the charging roller 1003 after receiving power from the image forming device, but also deliver power to the third power delivery member 1082 in contact with it, then, the third power delivery member electrical contact surface 1082a of the black process cartridge 1000K can be in contact with the first power delivery member electrical contact surface 1081a of the color process cartridge 1000 located in front of it, and can receive the power delivered by the black process cartridge 1000K, that is, the power can be sequentially transmitted through the image forming device, the third electrode 1014, the third power delivery member 1082, and the first power delivery member 1081 of the color process cartridge 1000.

[0149] Generally, in the installation direction of the process cartridge, the black process cartridge 1000K is located at the most upstream of the tray 2, that is, the color process cartridges 1000 are all arranged downstream of the black process cartridge 1000K, therefore, by arranging the power transmission member in the color process cartridges 1000, the power transmission between the three color process cartridges 1000 is also realized, that is, the power received by the second power transmission member 1014 of the black process cartridge 1000K can be transmitted to the three color process cartridges 1000 in turn, ensuring that when only black and white pages are printed, the charging roller 1003 of the color process cartridge 1000 can also be electrified, so that the developer on the developing roller 1001 of the color process cartridge 1000 can be inhibited from being transported to the photosensitive drum 1002, and the printing quality is ensured.

[0150] Further, the first power transmission member 1081, the second power transmission member 1014 and the third power transmission member 1082 are all made of a metal material that can conduct electricity, to provide reliable electrical connection stability and wear resistance, of course, it is not limited to metal, and can also be a conductive plastic material or the like; preferably, the third power transmission member 1082 is configured to have elasticity, preferably, the third power transmission member 1082 is a spring, so that it has reliable elastic deformation characteristics, thereby maintaining reliable electrical connection stability with the adjacent process cartridge, avoiding the problem that the third power transmission member electrical contact surface 1082a protrudes too much in the third direction and interferes with the adjacent process cartridge, or the problem that the third power transmission member electrical contact surface 1082a protrudes too little in the third direction and cannot contact the first power transmission member electrical contact surface 1082a of the adjacent process cartridge. The main part of the spring is installed in the mounting hole provided in the second protective cover 1012 to avoid the spring from shaking, thereby improving the installation stability of the spring.

[0151] Of course, in the installation direction of the process cartridge 1000, the color process cartridge 1000 located at the most downstream of the tray 2 serves as the last process cartridge for power transmission, therefore, it can not be necessary to be provided with the third power transmission member 1082, and the black process cartridge 1000K located at the most upstream of the tray 2 serves as the starting end for power transmission, since it can rely on the second power transmission member 1014 to receive power from the image forming apparatus, and it is not necessary to be provided with the first power transmission member 1081, therefore, by the above-mentioned structure, the manufacturing cost of a set of process cartridges can be reduced.

[0152] In summary, in the process cartridges provided in Embodiments 4-6, the charging roller 1003 is electrically connected by adding one or more circuit transmission paths, thereby continuously maintaining the charging of the charging roller, and inhibiting the transfer of the developer, regardless of the implementation, the transfer of the developer is inhibited by forming a sufficient potential difference with the developing roller 1001, and it should be noted that only a few preferred embodiments are listed in this embodiment, and other ways of solving the problem of inhibiting the transfer of the developer by this principle are not described here, and this is not limited.

[0153] Embodiment 7

[0154] Next, Embodiment 7 of the present application will be described in detail with reference to FIG. 43, which shows a process cartridge 1100, to inhibit the transfer of the developer on the developing roller 1101 to the photosensitive drum, the solution disclosed in Embodiment 6 above that the power transmission of the second power transmission member on the black process cartridge is transmitted to the charging roller on the color process cartridge, but the solution adopted in this embodiment is different, simply speaking, by changing the rotation speed of the developing roller 1101 of the process cartridge 1100, the color developer on the paper can be greatly reduced, and the effect of improving the printing quality can be achieved, that is, the gear train of the first unit is different, and for the same parts of the process cartridge 1100 as in the above embodiments, Embodiment 7 will not be described here.

[0155] Specifically, the first coupling member 1120 of the process cartridge 1100 includes first coupling member gear teeth 1120a, and the developing roller gear 1121 has developing roller gear teeth 1121a, the first coupling member gear teeth 1120a and the developing roller gear teeth 1121a are engaged, so that the first coupling member 1120 can drive the developing roller gear 1121 to rotate after receiving the driving force of the image forming apparatus, and then the developing roller gear 1121 can drive the developing roller 1101 to rotate, in this embodiment, in the case where the outer diameter of the developing roller 1101 remains unchanged, in order to reduce the rotation speed of the developing roller 1101, the rotation speed of the developing roller gear 1121 can be reduced, to achieve this effect, the number of teeth Z1 of the first coupling member gear teeth 1120a can be reduced and / or the number of teeth Z2 of the developing roller gear teeth 1121a can be increased, define P = Z1 / Z2, preferably, 0.8 < P < 2.2, more preferably, 1.3 < P < 1.7, within this range, the rotation speed of the developing roller gear 1121 is more appropriate, which will not cause the rotation speed of the developing roller 1101 to be too slow, so that the amount of developer transferred to the photosensitive drum is too small to cause unclear or missing text, and the rotation speed of the developing roller 1101 will not be too fast, so that the rotation speed of the developing roller 1101 is not reduced significantly, and the desired effect cannot be achieved. Preferably, 17 < Z2 < 28, more preferably, 20 < Z2 < 24.

[0156] It is worth mentioning that the solution disclosed in the present embodiment 7 can be combined with any of the process cartridges in embodiments 1-6, or independent of any of the process cartridges in embodiments 1-6.

[0157] Embodiment 8

[0158] Next, the present embodiment 8 will be described in detail in combination with Figs. 44-49, which shows a process cartridge 1200. The process cartridge 1200 has the same parts as those in the above embodiments, and thus the same parts will not be described again. The process cartridge 1200 is different from the above embodiments in that the photosensitive drum 1202 will stop rotating when the drum roller separation action is performed by the image forming apparatus (in the present embodiment, the developing roller of the process cartridge 1200 and the photosensitive drum 1202 will not be separated, and will always be kept in the drum roller contact position), so as to inhibit the developer of the photosensitive drum 1202 from being transferred to the transfer belt of the image forming apparatus.

[0159] Specifically, the process cartridge 1200 is provided with a clutch mechanism in the first direction at the first end of the photosensitive drum 1202, which includes but is not limited to a force receiving member 1240, a pressing member 1241, a pressed member 1242, a driving member 1243, a drum flange 1244, an elastic member 1245, a connecting member 1246, and a locking member 1247. The force receiving member 1240 still includes the first force receiving portion 1240b1 and the second force receiving portion 1240b2, which will not be described again here, but the force receiving member 1240 further includes a pushing portion 1240b3. In the second direction, the first force receiving portion 1240b1, the second force receiving portion 1240b2, and the pushing portion 1240b3 are respectively located on both sides of the rotation axis of the force receiving member 1240.

[0160] The pressing member 1241 is generally in the shape of a "Y" and is configured as a rod, the pressing member 1241 is rotatably mounted on the first cover 1211 of the second housing through a connecting shaft 1248 extending in the second direction, which makes the pressing member 1241 have a freedom of movement in the first direction, the pressing member 1241 includes a pushing force receiving portion 1241b3 and a pressing force applying portion 1241b1, wherein the pressing force applying portion 1241b1 has a pair of pressing force applying portions to provide more stable and more balanced pressing force, in the third direction, the pushing force receiving portion 1241b3 and the pressing force applying portion 1241b1 are respectively located at both ends of the swing axis of the pressing member 1241, wherein when the first force receiving portion 1240b1 of the force receiving member 1240 receives the pushing force of the image forming device and moves, the pushing portion 1240b3 can move in the direction intersecting the first direction, so that the pushing force receiving portion 1241b3 can receive the pushing of the pushing portion 1240b3, the pressing member 1241 will swing around the connecting shaft 1248, so that at least a part of the pressing force applying portion 1241b1 moves in the first direction towards the direction close to the photosensitive drum 1202; further, in order to facilitate the pressing member 1241 to be pushed more smoothly, at least one of the pushing force receiving portion 1241b3 and the pushing portion 1240b3 is provided with an inclined surface intersecting the rotation direction of the force receiving member 1240, thus, through the configuration of this inclined surface, the pressing member 1241 can be pushed more smoothly, avoiding being stuck due to interference when being pushed.

[0161] The pressed member 1242 is configured as a disc structure and can receive the pressing force of the pressing member 1241 to move in the first direction towards the direction close to the photosensitive drum 1202; the driving member 1243 is closer to the photosensitive drum 1202 than the pressed member 1242 in the first direction, the driving member 1243 keeps in contact with the pressed member 1242, when the pressed member 1242 moves in the first direction towards the direction close to the photosensitive drum 1202, the pressed member 1242 can push the driving member 1243 to also move in the first direction towards the direction close to the photosensitive drum 1202; Furthermore, the driving member 1243 also includes a driving portion 1243a, when the processing cartridge 1200 normally performs the printing task, the coupling protrusion 1220a of the first coupling member 1220 can receive the rotating driving force from the image forming device to rotate, so that the driving protrusion 1220b provided on the first coupling member 1220 can drive the driving member 1243 to rotate, that is, the driving member 1243 can be pushed by the pressed member 1242 to move in the first direction, or can be driven by the first coupling member 1220 to rotate.

[0162] The drum flange 1244 is fixedly connected to the photosensitive drum 1202, and has a hollow inner cavity, and a driven portion 1244a is arranged in the inner cavity. When the process cartridge 1200 normally performs a printing task, the driven portion 1244a can be in contact with the driving portion 1243a of the driving member 1243 and can be driven to rotate by the driving force 1243, so that the drum flange 1244 drives the photosensitive drum 1202 to rotate. However, when the process cartridge 1200 does not perform a printing task, the driving member 1243 is pushed by the pressing member 1242 to move in the first direction towards the photosensitive drum 1202, so that the driving portion 1243a of the driving member 1243 is out of contact with the driven portion 1244a of the drum flange 1244 in the first direction. This will prevent the rotating driving force on the driving member 1243 from being transmitted to the drum flange, so that the photosensitive drum 1202 stops rotating, thereby preventing the developer of the photosensitive drum 1202 from being transferred to the transfer belt of the image forming apparatus, and improving the printing quality.

[0163] The connecting member 1246 is connected in the inner cavity of the drum flange 1244 through an elastic buckle 1246a. The elastic member 1245 is sleeved on one end of the first coupling component 1220 away from the coupling protrusion 1220a in the first direction, and is arranged between the connecting member 1246 and the driving member 1243 in the first direction, to provide an elastic restoring force to the driving member 1243, so that the driving member 1243 can be moved to the initial position when it is not pressed by the pressing member 1242 in the first direction, to facilitate preparation for the next action of the pressing member 1242. Preferably, the elastic member 1245 is a compression spring. The locking member 1247 can be used to lock the first coupling component 1220 on the connecting member 1246, to avoid the movement of the first coupling component 1220 in the first direction and affect the coupling success rate of the first coupling component 1220 with the image forming apparatus.

[0164] Embodiment 9

[0165] As shown in FIGS. 50-52, the process cartridge 100 of embodiment 9 of the present application will be introduced next. The process cartridge 100 has the same features as the process cartridges in embodiments 1-8, such as: the developing roller 103 and the photosensitive drum 104 will always remain in contact when the process cartridge 100 performs a printing task or does not perform a printing task. For the above and other same features, this embodiment will not be described again. The difference is that the first force receiving portion 108 and the second force receiving portion 107 are both arranged on the force receiving member 140 as in embodiment 1. Of course, the first force receiving portion 108 of the process cartridge 100 can be movably arranged on the first unit 110, and the second force receiving portion 107 is arranged on the force receiving member 140, that is, the first force receiving portion 108 and the second force receiving portion 107 are arranged separately.

[0166] Further, the second force receiving portion 106 comprises an engaging portion 107 facing the first force receiving portion 108, at least a part of the engaging portion 107 is configured to be elastically deformed after being forced.

[0167] As shown in Fig. 50, when the process cartridge 100 is being installed into the image forming apparatus from top to bottom, the engaging portion 107 of the second force receiving portion 106 will engage with the pushing portion 41 of the image forming apparatus, and since the engaging portion 107 can be elastically deformed, the lower end of the engaging portion 107 can be elastically deformed by being pressed by the pushing portion 41, and at this time, the engaging portion 107 keeps in contact with the pushing portion 41 of the image forming apparatus due to the elastic deformation.

[0168] When the process cartridge 100 needs to be switched to a state in which it does not need to perform a printing task, the pushing portion 41 moves along the third direction to the first pushing position shown in Fig. 51 away from the photosensitive drum 104 from the intermediate position shown in Fig. 50, at this time, compared with the pushing portion 41 in the intermediate position, the deformation amount of at least a part of the engaging portion 107 is reduced, the pushing portion 41 pushes the first force receiving portion 108, so that the force receiving member 140 moves relative to the first unit 110, thereby disconnecting the electrical connection between the developing roller 101 and the image forming apparatus, then, the pushing portion 41 is reset to move from the first pushing position shown in Fig. 51 to the intermediate position shown in Fig. 50 under the control of the image forming apparatus, at this time, the pushing portion 41 of the image forming apparatus is out of contact with the first force receiving portion 108, and will be in contact with the engaging portion 107 of the second force receiving portion 106, at this time, the force receiving member 140 will remain in a position in which the electrical connection between the developing roller 101 and the image forming apparatus can be disconnected, even if the pushing portion 41 of the image forming apparatus no longer continuously pushes the first force receiving portion 108 at this time, the force receiving member 140 can remain in a position in which the electrical connection between the developing roller 101 and the image forming apparatus is continuously disconnected, thereby improving the printing quality.

[0169] When the process cartridge 100 needs to switch from a non-printing state to a state of performing a printing task, the pushing portion 41 moves along the third direction towards the direction of approaching the photosensitive drum 104 from the intermediate position shown in Fig. 51 to the second pushing position shown in Fig. 52, during the movement of the pushing portion 41 of the image forming apparatus, the pushing portion 41 can press the engaging portion 107 of the second force receiving portion 106 in the third direction towards the direction of approaching the photosensitive drum 104, at this time, the elastic deformation amount of the engaging portion 107 is further larger than that of the pushing portion 41 in the intermediate position, at this time, the pushing portion 41 of the image forming apparatus can push the second force receiving portion 106 to move the force receiving member 140 from the first position of disconnecting the electric connection between the developing roller 101 and the image forming apparatus to the second position of maintaining the electric connection between the developing roller 101 and the image forming apparatus, then, the pushing portion 41 is reset to move from the second pushing position shown in Fig. 52 to the intermediate position shown in Fig. 50 under the control of the image forming apparatus, at this time,

[0170] The pushing portion 41 of the image forming apparatus still keeps in contact with the engaging portion 107 of the second force receiving portion 106, and as described above, the pushing portion 41 is out of contact with the first force receiving portion 108, at this time, the force receiving member 140 will keep in the position of electrically connecting the developing roller 101 and the image forming apparatus, even if the pushing portion 41 of the image forming apparatus no longer continuously pushes the second force receiving portion 106, the force receiving member 140 can keep in the position of continuously disconnecting the electric connection between the developing roller 101 and the image forming apparatus, thereby ensuring the normal printing of the process cartridge 100.

[0171] In general, in the process cartridge 100 of the embodiment, the second force receiving portion 106 keeps in contact with the pushing portion 41 of the image forming apparatus regardless of the printing or non-printing state of the process cartridge 100, which makes the pushing portion 41 of the image forming apparatus pass through the elastic deformation of the engaging portion 107 of the second force receiving portion 106 when moving instantaneously, thereby achieving a certain buffering, avoiding the direct instantaneous hard contact between the pushing portion 41 and the second force receiving portion 106, and preventing the damage of the two. Alternatively, the engaging portion 107 can be arranged on the first force receiving portion 108, so that the pushing portion 41 always keeps in contact with the first force receiving portion 108, or the engaging portion 107 can be arranged on both the first force receiving portion 108 and the second force receiving portion 106, so that the pushing portion 41 always keeps in contact with the first force receiving portion 108 and the second force receiving portion 106, which is not limited.

[0172] Embodiment 10

[0173] As shown in Figs. 53-58, the process cartridge 400 of the embodiment 10 of the present application is introduced as follows, the same parts as those in the above embodiments will not be described herein again, and the different parts are as follows.

[0174] The processing cartridge 400 comprises an electrode 414 arranged on the housing 410, specifically, the electrode 414 is arranged on the second cover 412 of the second housing 410b, the electrode 414 has an electrode electric contact surface 414a which can be electrically contacted with the power supply part of the image forming device, in the first direction, the electrode electric contact surface 414a is arranged at the second end of the housing 410, and the electrode electric contact surface 414a is configured to supply the power to the charging roller, that is, the electrode 414 can receive the power from the image forming device and supply the received power to the charging roller to ensure that the charging roller can charge the photosensitive drum 405. Furthermore, the processing cartridge 400 comprises a chip 413, the chip 413 has a chip electric contact surface 413a which can be electrically contacted with the electric contact of the image forming device, in the first direction, the chip electric contact surface 413a is arranged at the second end of the housing, that is, the first coupling part 420 and the second coupling part 421 are arranged at different ends of the housing, such an arrangement makes the chip electric contact surface 413a far enough from the first coupling part 420 and the second coupling part 421, reduces the influence of the vibration generated by the rotation of the first coupling part 420 and the second coupling part 421 on the chip electric contact surface 413a, and helps to improve the stability of the electric contact between the first coupling part 420 and the second coupling part 421 and the image forming device; the chip electric contact surface 413a and the electrode electric contact surface 414a are spaced apart to avoid mutual electric interference, and in the first direction, the chip electric contact surface 413a is arranged at a position farther away from the first end of the housing 410 than the electrode electric contact surface 414a.

[0175] Further, the processing cartridge 400 comprises a first cleaning member 408 supported on the second housing 401b and a second containing cavity 401b4 arranged on the second housing 401b, specifically, the first cleaning member 408 is preferably a cleaning blade or a felt or a sponge, one end (made of metal material) of which is supported on the second housing 401b, and the other end (made of rubber material) of which is in contact with the outer surface of the photosensitive drum 405 to scrape off the waste developer remaining on the outer surface of the photosensitive drum 405 after transfer, so as to clean the photosensitive drum 405 and improve the printing quality, finally, the scraped developer is collected in the second containing cavity 401b4 of the second housing 401b, therefore, the present embodiment can clean the photosensitive drum 405 and collect the waste developer by arranging the first cleaning member 408 and the second containing cavity 401b4, which helps to improve the printing quality of the processing cartridge 400.

[0176] Further, in the actual printing process, there can be a situation that the waste developer on the photosensitive drum 308 is enough and there is already part of the waste developer on the first cleaning member 408, so that the cleaning member cannot completely scrape off the residual waste developer on the photosensitive drum 405, at this time, the rotating photosensitive drum 405 will adhere part of the residual waste developer to the charging roller 409 through the close contact with the charging roller 409, therefore, when in this situation, on the one hand, it will affect the charging uniformity of the charging roller 409 charging the photosensitive drum 405, on the other hand, it will also cause the waste developer on the charging roller 409 and the waste developer on the photosensitive drum 405 to pollute each other, and further affect the cleanliness of the outer surfaces of each other, affect the printing effect of the processing cartridge 400, therefore, it is necessary to solve this possible problem, as a preferred embodiment of the present embodiment 4, the processing cartridge 400 further comprises a second cleaning member 411 provided on the second housing 401b, the second cleaning member 411 is preferably felt or sponge, which can be in contact with the outer surface of the charging roller 409, so as to clean the outer surface of the charging roller 409, in this way, the photosensitive drum 405 and the charging roller 409 can be cleaned by the cleaning member, and the cleanliness of the outer surfaces of the two is also improved, thereby the printing quality of the processing cartridge 400 can be improved; alternatively, the second cleaning member 411 can also be provided as a cleaning scraper, at this time, the waste developer scraped off by the cleaning scraper can also enter the second containing cavity 401b4 to complete the collection of the waste developer; it is worth mentioning that the second cleaning member 411 in the present embodiment 10 can also be used in any one of the above embodiments 1-9, which will not be repeated here.

Claims

1. A process cartridge, comprising: a developing roller; a photosensitive drum; a charging member configured to charge the photosensitive drum; characterized by further comprising a regulating assembly configured to receive a first voltage, and output a second voltage to the charging member after the first voltage is regulated by the regulating assembly, wherein the first voltage is different from the second voltage.

2. The process cartridge according to claim 1, wherein, An absolute value of the first voltage is less than an absolute value of the second voltage.

3. The process cartridge of claim 1, wherein, Further comprising a power supply member configured to output the first voltage, the power supply member being a generator or a battery or an electrode configured to receive a voltage of an image forming device.

4. The process cartridge of claim 3 wherein, Further comprising a first coupling member configured to receive a driving force rotation of the image forming device, the power supply member being a generator, and the first coupling member being configured to drive the generator to rotate.

5. The process cartridge of claim 4 wherein, The first coupling member is configured to drive the developing roller to rotate.

6. The process cartridge of claim 1, wherein, Further comprising an electrical time delay member disposed between the regulating assembly and the charging member in a direction in which the second voltage is transmitted from the regulating assembly to the charging member, the electrical time delay member being configured to prolong a time required for the second voltage to be transmitted to the charging member.

7. The process cartridge of claim 6 wherein, The electrical time delay member is an inductor, a capacitor or a resistor.

8. The process cartridge of claim 6 wherein, A diode is disposed between the electrical time delay member and the charging member in the direction in which the second voltage is transmitted from the regulating assembly to the charging member.

9. A process cartridge, comprising: a developing roller; a powder feeding roller configured to feed a developer to the developing roller; a powder regulating blade configured to regulate a thickness of the developer on a surface of the developing roller; a photosensitive drum; a charging member configured to contact the photosensitive drum and charge the photosensitive drum; characterized by further comprising an electrode configured to be electrically connected to the charging member, and the electrode is electrically connected to at least one of the developing roller, the powder feeding roller and the powder regulating blade.

10. The process cartridge of claim 9 wherein, The electrode is electrically connected to the powder feeding roller and the charging member.

11. The process cartridge of claim 9 wherein, Further comprising a force receiving member configured to move in response to a pushing force of an image forming device, and the developing roller is configured to switch between a state in which the developing roller is electrically connected to the electrode and a state in which the developing roller is electrically disconnected from the electrode by the movement of the force receiving member.

12. The process cartridge of claim 9 wherein, Further comprising a grounding member made of an electrically conductive material, and the force receiving member is configured to move in response to the pushing force of the image forming device, and the grounding member is configured to be electrically connected to a grounding portion of the image forming device, and the developing roller is configured to switch between a state in which the developing roller is electrically connected to the grounding portion and a state in which the developing roller is electrically disconnected from the grounding portion by the movement of the force receiving member.

13. The process cartridge of claim 9 wherein, An electrical time delay member is disposed between the electrode and the charging member in a direction in which the electrode transmits a voltage to the charging member, and the electrical time delay member is an inductor, a capacitor or a resistor.

14. The process cartridge of claim 13, wherein, A diode is disposed between the electrical time delay member and the charging member in the direction in which the electrode transmits the voltage to the charging member.

15. The process cartridge of claim 9 wherein, Further comprising another electrode configured to be electrically connected to the charging member, and a diode is disposed between the another electrode and the charging member.

16. A process cartridge configured to be detachably installed in an image forming device having an electrically conductive member, comprising: a developing roller; a photosensitive drum; a charging member configured to charge the photosensitive drum; The image forming apparatus further includes an electric contact portion electrically contactable with the electrically conductive member, a force receiving member movable by receiving a pushing force of the image forming apparatus, the electric contact portion being electrically connectable with the developing roller, the electric connection between the electric contact portion and the developing roller being breakable by the movement of the force receiving member, and a cleaning member in contact with the charging member, the cleaning member being in pressure contact with the charging member and being capable of cleaning the developer on the charging member.

17. The process cartridge of claim 16 wherein, The electrically conductive member is configured as a ground portion of the image forming apparatus, the process cartridge has a ground member in contact with the ground portion, the ground member being electrically connectable with the developing roller, the developing roller being switchable between a state of being electrically connected with the ground portion and a state of being electrically disconnected from the ground portion by the movement of the force receiving member.

18. The process cartridge of claim 16 wherein, The process cartridge further includes a chip having a chip electric contact surface, the chip electric contact surface being located at an upper end of the process cartridge opposite to a lower end of the process cartridge when the process cartridge is positioned such that the photosensitive drum is at the lower end of the process cartridge, the photosensitive drum and the electric contact portion being simultaneously at the lower end of the process cartridge.

19. The process cartridge of claim 16 wherein, The process cartridge further includes a chip having a chip electric contact surface, and a first coupling member drivable to rotate the developing roller, the electric contact portion and the chip electric contact surface being located at the same end of the process cartridge in a length direction of the process cartridge, the electric contact portion and the first coupling member being located at different ends of the process cartridge.

20. The process cartridge of claim 16 wherein, The electrically conductive member is configured as a power supply portion of the image forming apparatus, the process cartridge further including a force receiving member movable by receiving a pushing force of the image forming apparatus, the developing roller being switchable between a state of being electrically connected with the power supply portion and a state of being electrically disconnected from the power supply portion by the movement of the force receiving member.

Images