Separable developing box

Abstract

The invention discloses a separable developing box, which comprises a base provided with a photosensitive drum; the moving part is movably arranged on the base, the moving part is provided with a developing roller, and the moving part can move relative to the base until the photosensitive drum is in contact with or separated from the developing roller; the movable receiving part is arranged on the movable part, and is used for receiving power from a force application part of the printer to drive the movable part to move relative to the base until the photosensitive drum is in contact with or separated from the developing roller; the abutting piece is movably arranged on the base; when the force applying part is in the separation state, the abutting part and the movable receiving part move together to separate the developing roller from the photosensitive drum; when the force application part is in a neutral state, the abutting part can keep the distance between the movable receiving part and the force application part, so that the developing roller and the photosensitive drum are kept separated; by applying the developing box, the reliability can be effectively improved while the printing effect is ensured.

Description

Technical Field

[0001] The invention relates to the field of printers, and in particular to a detachable developing box. Background Art

[0002] In some current laser printers, the entire developing box is divided into a fixed part and a rotating part. The photosensitive drum is arranged on the fixed part, while the powder bin and the developing roller are arranged on the rotating part. During printing, the force-applying component drives the rotating part to rotate so that the developing roller and the photosensitive drum come into contact. In the non-printing state, the force-applying component drives the rotating part to rotate so that the developing roller and the photosensitive drum are separated.

[0003] Specifically, in the non-printing state after the developing box is installed, the force-applying component moves forward along the second direction to the separation state, driving the rotating part to rotate until the developing roller and the photosensitive drum are separated. At this time, the retaining component rotates to clamp the rotating part under the action of the spring, so that the developing roller and the photosensitive drum remain in a separation state; when printing, the force-applying component moves in the opposite direction along the second direction, driving the retaining component to rotate in the opposite direction to release the clamping of the rotating part, and the rotating part rotates until the developing roller and the photosensitive drum are in contact; when the printer has been running for a long time and multiple times, the retaining component is prone to fail to clamp the rotating part due to spring failure, causing the developing box to work abnormally and reducing its reliability. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a detachable developing box, which can ensure the printing effect and effectively improve its reliability.

[0005] The detachable developing box of the present invention comprises: a base, on which a photosensitive drum is provided; a moving part, which is movably provided on the base, on which a developing roller is provided, and the moving part can be moved relative to the base until the photosensitive drum contacts or is separated from the developing roller; a moving receiving member, which is provided on the moving part, and is used to receive power from a force-applying member of the printer to drive the moving part to move relative to the base until the photosensitive drum contacts or is separated from the developing roller; an abutting member, which is movably provided on the base; when the force-applying member is in a separated state, the abutting member moves together with the moving receiving member to separate the developing roller from the photosensitive drum; when the force-applying member is in a neutral state, the abutting member can maintain the spacing between the moving receiving member and the force-applying member to keep the developing roller and the photosensitive drum separated.

[0006] According to some embodiments of the present invention, the abutment member includes an abutment portion, which is arranged between a movable receiving member and a force-applying member; when the force-applying member is in a separated state, the abutment portion moves together with the movable receiving member along the second direction to separate the developing roller and the photosensitive drum; when the force-applying member is in a neutral state, the abutment portion can maintain the distance between the movable receiving member and the force-applying member to keep the developing roller and the photosensitive drum separated.

[0007] According to some embodiments of the present invention, a limiting groove is provided on the base along the second direction, and the abutting member further includes a second limiting portion fixedly connected to the abutting portion, and the second limiting portion is slidably engaged with the limiting groove.

[0008] According to some embodiments of the present invention, the abutment member further includes a first identification portion fixedly connected to the abutment portion, and the first identification portion can enable the force-applying component to move along the third direction.

[0009] According to some embodiments of the present invention, the abutment member is an integrally formed member.

[0010] According to some embodiments of the present invention, the detachable developing box also includes: a second identification portion, which is arranged on the base, and the second identification portion is located on the rear side of the abutment portion along the second direction. When the force-applying component is in a printing state, the second identification portion can make the force-applying component move along a third direction.

[0011] According to some embodiments of the present invention, the detachable developing box further includes a first side cover arranged at one end of the base along the first direction, the second identification portion is integrally formed with the first side cover, and the movable portion is rotatably connected to the first side cover.

[0012] According to some embodiments of the present invention, the moving part includes a first support seat rotatably arranged on the first side cover, the movable receiving member is fixedly connected to the first support seat, the developing roller is rotatably arranged on the first support seat, the photosensitive drum is rotatably arranged on the first side cover, and the first support seat can be rotated relative to the base until the developing roller and the photosensitive drum are in contact or separated.

[0013] According to some embodiments of the present invention, a first limiting portion is disposed on the first side cover, and the first supporting seat cooperates with the first limiting portion.

[0014] According to some embodiments of the present invention, the detachable developing cartridge further includes a reset mechanism that provides a driving force to the moving portion to bring the developing roller into contact with the photosensitive drum.

[0015] By using the above-mentioned detachable developer box, when the developer box is installed and no printing is needed, the force-applying component drives the abutment component and the movable receiving component to move together, so that the developing roller is separated from the photosensitive drum; then the force-applying component returns to the neutral state, and because the abutment component maintains the distance between the movable receiving component and the force-applying component at this time, the developing roller and the photosensitive drum are still in a separated state; without changing the operating mode of the force-applying component of the printer, it is also possible to ensure that the developing roller and the photosensitive drum are separated when no printing is needed, thereby ensuring the printing effect; and the separation of the developing roller and the photosensitive drum does not require the rotation of the spring-driven retaining component, which effectively reduces the failure of the retaining component caused by the failure of the spring due to repeated use, thereby improving the reliability of the developer box.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is an isometric view of a detachable developing cartridge in an embodiment of the present invention;

[0019] Figure 2 is an isometric view of a detachable developing cartridge from another perspective in an embodiment of the present invention;

[0020] Figure 3 is a side view of a partial structure of a detachable developing cartridge in an embodiment of the present invention;

[0021] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0022] Figure 5 yes Figure 3 Axonometric drawing of the middle structure;

[0023] Figure 6 yes Figure 5 Side view of the middle structure after the first support seat is removed;

[0024] Figure 7 yes Figure 6 The enlarged view of point A in the middle;

[0025] The above drawings contain the following reference numerals.

[0026] Label name 100 Base 110 First side cover 111 Second identification part 112 First support part 113 The first limiter 120 Photosensitive drum 130 First power receiving member 141 Butt part 142 First identification part 143 The second limiter 210 Powder silo 220 The first bearing DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of the present invention, "several" means one or more, "more" means two or more, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Reference Figures 1 to 7 The detachable developing box of this embodiment includes: a base 100, on which a photosensitive drum 120 is provided; a moving part, which is movably provided on the base 100, and the moving part is provided with a developing roller, and the moving part can move relative to the base 100 to the photosensitive drum 120 to contact or separate from the developing roller; a moving receiving member, which is provided on the moving part, and the moving receiving member is used to receive power from a force-applying member of the printer to drive the moving part to move relative to the base 100 to the photosensitive drum 120 to contact or separate from the developing roller; an abutting member, which is movably provided on the base 100; when the force-applying member is in a separated state, the abutting member moves together with the moving receiving member to separate the developing roller and the photosensitive drum 120; when the force-applying member is in a neutral state, the abutting member can maintain the spacing between the moving receiving member and the force-applying member to keep the developing roller and the photosensitive drum 120 separated.

[0032] By using the above-mentioned detachable developing box, when the developing box is installed and no printing is needed, the force-applying component drives the abutment component and the movable receiving component to move together, so that the developing roller is separated from the photosensitive drum 120; then the force-applying component returns to the neutral state, and because the abutment component maintains the distance between the movable receiving component and the force-applying component at this time, the developing roller and the photosensitive drum 120 are still in a separated state; without changing the operating mode of the force-applying component of the printer, it is also possible to ensure that the developing roller and the photosensitive drum 120 are separated when no printing is needed, thereby ensuring the printing effect; and the separation of the developing roller and the photosensitive drum 120 does not need to rely on the spring-driven retaining component to rotate, which effectively reduces the failure of the retaining component caused by the failure of the spring due to repeated use, thereby improving the reliability of the developing box.

[0033] refer to Figure 3 and Figure 4From this perspective, after the developing box is installed in the printer, the force-applying component of the printer has three states, namely, a separated state, a neutral state and a printing state; when the force-applying component is in the separated state, the force-applying component moves toward the second direction, pushing the abutment member and the movable receiving member to move together toward the second direction, thereby driving the entire movable part to move, so that the developing roller and the photosensitive drum 120 are separated; when the developing roller and the photosensitive drum 120 are separated, the force-applying component enters the neutral state, at this time, if the developing box in the prior art has a movable receiving member separated from the force-applying component and the retaining member rotates under the action of the spring to clamp the rotating part so that the developing roller and the photosensitive drum 120 remain separated, the developing box abutment member in this embodiment can maintain the interval between the force-applying component and the movable receiving member, so that the developing roller and the photosensitive drum 120 can also remain in a separated state; before printing, the force-applying component will enter the printing state, at which time the force-applying component moves in the opposite direction of the second direction; at this time, this When the developer box in the prior art has its retaining member rotated in the opposite direction to release the clamping of the moving part and the developing roller and the photosensitive drum 120 are combined, while in the developer box in this embodiment, the abutment member loses the abutment, and the mobile receiving member and the abutment member move together in the opposite direction of the second direction. At this time, the moving part moves until the developing roller and the photosensitive drum 120 are in contact, and printing begins. It can be seen that whether it is a developer box in the prior art or the developer box in this embodiment, the operating states of the printer and the force-applying member are the same, which ensures the printing effect. When the force-applying member of the developer box in this embodiment enters the neutral state, there is no need for the retaining member to rotate under the action of the spring to clamp the rotating part, and there will be no situation where the spring fails and the retaining member cannot work, causing the developing box to malfunction, thereby effectively improving the reliability of the developing box. In particular, since the retaining member of the developer box in the prior art is relatively small, the spring acting on the retaining member is relatively small in size and is easily invalid after repeated use.

[0034] In order to ensure that the developing roller and the photosensitive drum 120 can contact normally in the printing state, the developing box of this embodiment also includes a reset mechanism, which provides a driving force for the moving part to make the developing roller and the photosensitive drum 120 contact; it can be understood that the process of the force-applying component driving the abutment and the movable receiving component to move along the second direction is the process of counteracting the driving force of the reset mechanism; when the force-applying component enters the printing state, the driving force of the reset mechanism can drive the developing roller and the photosensitive drum 120 to contact; wherein, the reset mechanism can use elastic components such as springs to connect the base 100 and the moving part, and can also use magnetic components to apply driving force between the base 100 and the moving part.

[0035] like Figure 1As shown in the present embodiment, the first direction refers to the positive direction along the x-axis, and the axes of the developing roller and the photosensitive drum 120 are parallel to the positive direction of the x-axis; the second direction refers to the positive direction along the y-axis, and the third direction refers to the positive direction along the axis; the coordinate diagram in the drawings in this embodiment does not mean that the xyz coordinate system is an orthogonal coordinate system.

[0036] It can be understood that in this embodiment, the movable part and the base 100 can be connected by rotation or by sliding, both of which can achieve the separation and combination of the developing roller and the photosensitive drum 120; the printer and its force-applying components are the working environment of the developing box, not a part of the developing box itself; the so-called detachable developing box in this embodiment means that the developing roller and the photosensitive drum 120 are separable; according to the relevant principles of the printer, in order to ensure that the toner can be transferred from the developing roller to the photosensitive drum 120 during printing, the developing roller and the photosensitive drum 120 must be in contact. Separating the developing roller and the photosensitive drum 120 when the printer is idle can effectively reduce the agglomeration of toner between the developing roller and the photosensitive drum 120, which affects the printing quality.

[0037] like Figure 4 As shown, the abutment member includes an abutment portion 141, which is arranged between the mobile receiving member and the force-applying member; when the force-applying member is in a separated state, the abutment portion 141 moves along the second direction together with the mobile receiving member to separate the developing roller and the photosensitive drum 120; when the force-applying member is in a neutral state, the abutment portion 141 can maintain the distance between the mobile receiving member and the force-applying member to keep the developing roller and the photosensitive drum 120 separated; when the force-applying member is in a separated state, the force-applying member moves toward the second direction, pushing the abutment portion 141 and the mobile receiving member to move toward the second direction together, thereby driving the entire moving part to move, so that the developing roller and the photosensitive drum 120 is separated; when the developing roller and the photosensitive drum 120 are separated, the force-applying component enters a neutral state, and the developing box abutment portion 141 in this embodiment abuts between the movable receiving member and the force-applying component, and can maintain the interval between the force-applying component and the movable receiving member, so that the developing roller and the photosensitive drum 120 can also maintain a separated state; before printing, the force-applying component will enter a printing state, at this time, under the action of the driving force of the reset mechanism, the force-applying component moves in the opposite direction of the second direction, the abutment loses the abutment, and the movable receiving member and the abutment move together in the opposite direction of the second direction, at this time, the moving part moves until the developing roller and the photosensitive drum 120 are in contact, and printing starts.

[0038] like Figure 6 , Figure 7As shown, a limiting groove is provided on the base 100 along the second direction, and the abutment member also includes a second limiting portion 143 fixedly connected to the abutment portion 141, and the second limiting portion 143 slidably cooperates with the limiting groove; wherein, the limiting groove can provide limitation in the second direction for the entire abutment member including the abutment portion 141 and the second limiting portion 143, so that the abutment member can only move along the second direction relative to the base 100.

[0039] like Figure 4 As shown, the abutment member also includes a first identification portion 142 fixedly connected to the abutment portion 141, and the first identification portion 142 can make the force-applying component move along the third direction; when the developing cartridge is installed on the printer, the force-applying component abuts against the first identification portion 142, and at this time, the force-applying component will move along the third direction and then generate a signal that enables the printer to correctly identify the developing cartridge, thereby ensuring the normal operation of the printer; it can be understood that in Figure 7 From the perspective of the present invention, the force-applying component generally extends in the positive direction of the third direction, and can generate movement along the third direction relative to the printer. When the force-applying component generates movement along the third direction relative to the printer, a signal can be sent to the printer so that the printer can correctly identify the developing box. It should be noted that the movement along the third direction referred to here can be either forward movement along the third direction or reverse movement along the third direction.

[0040] In order to ensure the strength of the entire abutting member, the abutting member is an integrally formed member, that is, the abutting portion 141 , the second limiting portion 143 and the first identification portion 142 are all integrally formed.

[0041] like Figure 4 As shown, the developing box also includes: a second identification portion 111, which is arranged on the base 100, and the second identification portion 111 is located on the rear side of the abutment portion 141 along the second direction. When the force-applying component is in a printing state, the second identification portion 111 can make the force-applying component move along a third direction; wherein, the second identification portion 111 has an inclined surface that can cooperate with the force-applying component, and when the force-applying component moves in the opposite direction of the second direction, it can cooperate with the inclined surface, and then generate movement along the third direction, so that the printer correctly identifies the developing box and prints normally.

[0042] like Figures 5 to 7The developing box also includes a first side cover 110 arranged at one end of the base 100 along the first direction, the second identification portion 111 is integrally formed with the first side cover 110, and the moving portion is rotatably connected to the first side cover 110; wherein, the first side cover 110 is fixedly connected to the base 100, and the photosensitive drum 120 is rotatably arranged on a first supporting portion 112 on the first side cover 110, and a power receiving member is further provided at one end of the photosensitive drum 120 for transmitting the torque transmitted by the printer to the photosensitive drum 120, so that the photosensitive drum 120 can rotate normally during printing, and the second identification portion 111 is integrally formed with the first side cover 110, which can effectively ensure the overall strength of the first side cover 110 and the second identification portion 111.

[0043] Specifically, the moving part includes a first support seat 220 rotatably arranged on the first side cover 110, the mobile receiving member is fixedly connected to the first support seat 220, the developing roller is rotatably arranged on the first support seat 220, the photosensitive drum 120 is rotatably arranged on the first side cover 110, and the first support seat 220 can be rotated relative to the base 100 until the developing roller and the photosensitive drum 120 are in contact or separated; specifically, the moving part includes a powder bin 210 and a developing roller, and the powder bin 210 and the developing roller are both arranged on the first support seat 220. When the first support seat 220 rotates relative to the first side cover 110, the developing roller and the photosensitive drum 120 can be separated or in contact; a power receiving member is also arranged on the first support seat 220, and the power receiving member is coaxial with the first support seat 220 relative to the rotating shaft of the first side cover 110, and the power receiving member transmits the torque transmitted from the printer to the developing roller through a gear set, and the position of the power receiving member will not change with the rotation of the first support seat 220.

[0044] like Figure 5 As shown, the first side cover 110 is provided with a first limiting portion 113, and the first support seat 220 cooperates with the first limiting portion 113; specifically, the first limiting portion 113 includes a portion of an arc track, and the first support seat 220 cooperates with the portion of the arc track, and the center of the portion of the arc track coincides with the rotation axis of the first support seat 220 relative to the first side cover 110, which can provide rotation limiting for the first support seat 220; it should be noted that, Figure 4 and Figure 7 The display viewing angle is different. Figure 4 The second direction seen from the perspective of Figure 7 The second direction seen from the perspective of is opposite.

[0045] like Figure 4As shown, the mobile receiving member is arranged at the edge of the first supporting seat 220. When the first supporting seat 220 rotates relative to the first side cover 110, the mobile receiving member strictly moves along a small arc trajectory. Since the arc length of the arc trajectory is short and the mobile receiving member is far away from the rotation center, it can be regarded as that the mobile receiving member moves in a straight line along the second direction.

[0046] After the developing box in this embodiment is installed in the printer, the detailed method of the printer driving the developing box to form an image can refer to the related prior art with publication number CN101371202A.

[0047] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A detachable developing cartridge, characterized in that: include: A base (100) is provided with a photosensitive drum (120); A movable part, movably arranged on the base (100), the movable part being provided with a developing roller, and the movable part being capable of moving relative to the base (100) to the photosensitive drum (120) to contact or separate from the developing roller; A movable receiving member, arranged on the movable part, the movable receiving member is used to receive power from a force-applying member of the printer to drive the movable part to move relative to the base (100) until the photosensitive drum (120) contacts or separates from the developing roller; an abutment member, movably arranged on the base (100); When the force-applying component is in a separated state, the abutment component moves together with the movable receiving component to separate the developing roller and the photosensitive drum (120); When the force applying member is in a neutral state, the abutment member can maintain the spacing between the movement receiving member and the force applying member so as to keep the developing roller and the photosensitive drum (120) separated.

2. The detachable developing cartridge according to claim 1, characterized in that: The abutment member comprises an abutment portion (141), and the abutment portion (141) is arranged between the movable receiving member and the force applying member; when the force applying member is in a separated state, the abutment portion (141) moves together with the movable receiving member along the second direction to separate the developing roller and the photosensitive drum (120); When the force applying member is in a neutral state, the abutment portion (141) can maintain the spacing between the moving receiving member and the force applying member so that the developing roller and the photosensitive drum (120) are kept separated.

3. The detachable developing cartridge according to claim 2, characterized in that: The base (100) is provided with a limiting groove along the second direction, and the abutment member further comprises a second limiting portion (143) fixedly connected to the abutment portion (141), and the second limiting portion (143) is slidably matched with the limiting groove.

4. The detachable developing cartridge according to claim 2, characterized in that: The abutment member further comprises a first identification portion (142) fixedly connected to the abutment portion (141), and the first identification portion (142) can enable the force-applying component to move along a third direction.

5. The detachable developing cartridge according to claim 4, characterized in that: The abutment member is an integrally formed member.

6. The detachable developing cartridge according to claim 2, characterized in that: Also includes: A second identification portion (111) is arranged on the base (100), and the second identification portion (111) is located at the rear side of the abutment portion (141) along the second direction. When the force-applying component is in a printing state, the second identification portion (111) can cause the force-applying component to move along a third direction.

7. The detachable developing cartridge according to claim 6, characterized in that: It also comprises a first side cover (110) arranged at one end of the base (100) along the first direction, the second identification portion (111) and the first side cover (110) are integrally formed, and the movable portion is rotatably connected to the first side cover (110).

8. The detachable developing cartridge according to claim 7, characterized in that: The movable part comprises a first support seat (220) rotatably arranged on the first side cover (110), the movable receiving member is fixedly connected to the first support seat (220), the developing roller is rotatably arranged on the first support seat (220), the photosensitive drum (120) is rotatably arranged on the first side cover (110), and the first support seat (220) can be rotated relative to the base (100) until the developing roller and the photosensitive drum (120) are in contact or separated.

9. The detachable developing cartridge according to claim 8, characterized in that: The first side cover (110) is provided with a first limiting portion (113), and the first supporting seat (220) cooperates with the first limiting portion (113).

10. The detachable developing cartridge according to claim 1, characterized in that: A reset mechanism is also included, which provides a driving force for the moving part to make the developing roller contact with the photosensitive drum (120).

Images