Processing box

Abstract

The utility model discloses a processing box, which comprises a frame, a developing roller; a photosensitive drum; a developing roller coupling portion; the chip comprises an electric contact surface, the electric contact surface is arranged at the right end of the frame in the left-right direction, the electric contact surface and the photosensitive drum are arranged in the up-down direction, the electric contact surface is arranged at the upper end of the frame in the up-down direction, and the electric contact surface is arranged at the lower end of the frame in the up-down direction. The photosensitive drum is arranged at the lower end of the frame; a force receiving protrusion having a force receiving surface capable of receiving an external force, the force receiving protrusion configured to be operably connected to the developing frame and capable of forcing the developing roller to move from a position in contact with the photosensitive drum to a position separated from the photosensitive drum; in the vertical direction, the distance between the lower tail end face of the force receiving protrusion and the rotating axis of the developing roller connecting part is P1, and P1 is larger than or equal to 31.5 mm and smaller than or equal to 33.2 mm.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic photographic imaging, in particular to a processing box. Background Art

[0002] In a conventional imaging device, a processing device (i.e., a developing box) that can act on a photosensitive drum and a photosensitive drum are integrated into a box, and the box can be detachably mounted to the imaging device. Depending on the type of box, the user can perform maintenance operations on the device without relying on service personnel, thereby significantly improving operability. Therefore, this type of box is widely used in imaging devices.

[0003] like Figure 1-4 As shown, the prior art discloses a processing box P, which can be detachably installed in an imaging device 1 having a pushing component (11, 12), the pushing component (11, 12) can move in the front-to-back direction and can rotate around its own rotation center (11a, 12a) in a direction perpendicular to the left-to-right direction, and when subjected to a pressing force from top to bottom, the pushing surface of the pushing component (11, 12) has a moving component in the up-down direction and will rotate downward for a distance.

[0004] The processing box P includes boxes of four different colors of developers, namely PY (yellow), PM (magenta), PC (blue), and PK (black). The four different colors of the processing boxes P can be installed together in the imaging device 1 to perform printing work together; specifically, the processing box P includes a developing unit and a drum unit connected to each other, the developing unit includes a developing frame that can accommodate the developer and a developing roller supported on the developing frame, and the drum unit includes a drum frame that can accommodate waste developer and a photosensitive drum supported on the drum frame. When the processing box P is installed in the imaging device and performs a printing task, the developing roller and the photosensitive drum are kept in close contact; the processing box P also includes a force receiving protrusion that can receive external force and is operably connected to the developing unit. When the processing box P does not perform printing work, the force receiving protrusion can receive the driving force from the driving component (11, 12) in the imaging device 1 and can drive the developing unit to swing relative to the drum unit, so that the developing roller moves from the contact position with the photosensitive drum. To the phase-separated separation position to avoid the irreversible deformation of the soft outer surface of the developing roller after long-term contact with the photosensitive drum, which affects the printing quality of the processing box. However, in the prior art, due to the construction of the pushing component 11 with a force receiving protrusion for pushing the black processing box PK in the imaging device 1, that is, the pushing surface 11b of the pushing component 11 for pushing the black processing box PK is farther away from their respective rotation centers than the pushing surfaces of the pushing component 12 for pushing the color processing boxes PY, PM, and PC. When subjected to the same force, the black pushing component 11 is easier to rotate downward than the color pushing component 12. That is to say, the pushing component 11 for pushing the black processing box PK is easier to detach from the pushing force receiving protrusion than the pushing component 12 for pushing the color processing boxes PY, PM, and PC, and thus the contact and separation of the developing roller and the photosensitive drum cannot be completed normally, which will affect the printing quality of the processing box to a certain extent. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a new processing box, which is mainly achieved through the following technical solutions:

[0006] A processing box, comprising:

[0007] A frame having opposite left and right ends in the left-right direction and opposite upper and lower ends in the up-down direction, wherein the left-right direction intersects the up-down direction, and the frame includes a developing frame and a drum frame; a developing roller supported on the developing frame and rotatable around a developing roller rotation axis extending along the left-right direction;

[0008] a photosensitive drum supported on the drum frame;

[0009] a developing roller coupling portion, disposed at the right end of the frame in the left-right direction, the developing roller coupling portion being capable of receiving an external rotational driving force and transmitting the rotational driving force to the developing roller;

[0010] A chip, comprising an electrical contact surface, the electrical contact surface being arranged at the right end of the frame in the left-right direction, the electrical contact surface and the photosensitive drum being arranged in the up-down direction, the electrical contact surface being arranged at the upper end of the frame, and the photosensitive drum being arranged at the lower end of the frame in the up-down direction;

[0011] a force receiving protrusion having a force receiving surface capable of receiving an external force, the force receiving surface being disposed at the right end of the frame in the left-right direction, the force receiving protrusion being configured to be operably connected to the developing frame and capable of forcing the developing roller to move from a position in contact with the photosensitive drum to a position separated from the photosensitive drum;

[0012] In the up-down direction, the distance between the lower distal end surface of the force receiving protrusion and the rotation axis of the developing roller coupling portion is P1, where 31.5 mm≦P1≦33.2 mm.

[0013] Furthermore, 32mm≦P1≦32.8mm.

[0014] Further, the force receiving surface is configured not to face the upper end of the frame.

[0015] Further, the extension direction of the force receiving surface is arranged parallel to the up-down direction.

[0016] Furthermore, the frame also includes a front-to-rear direction intersecting the left-right direction and the up-down direction, the frame has a front end and a rear end relative to each other in the front-to-rear direction, and the processing box also includes an anti-misinstallation protrusion arranged at the rear end of the frame.

[0017] Furthermore, the processing box also includes a handle for grasping, and the anti-misinstallation protrusion and the handle have an overlapping portion in the left-right direction.

[0018] Furthermore, the anti-mis-installation protrusion is separately provided from the frame.

[0019] Furthermore, the process box is a black process box, and the black process box contains black developer.

[0020] Further, the force receiving protrusion is mounted on the drum frame and can slide relative to the drum frame.

[0021] The utility model can avoid the problem that the force receiving protrusion of the black processing box is separated from the first pushing component of the imaging device during operation, thereby causing the developing roller and the photosensitive drum to not separate and affecting the printing quality of the processing box by increasing the protruding amount of the force receiving protrusion of the black processing box. Therefore, this improves the contact stability between the force receiving protrusion and the imaging device, and the separation of the developing roller and the photosensitive drum will be more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of an image forming device with a process cartridge installed in the prior art at a certain angle;

[0023] Figure 2 It is a schematic diagram from another angle of an imaging device equipped with a process cartridge in the prior art;

[0024] Figure 3 It is a schematic diagram of a certain angle of the pushing component in the utility model;

[0025] Figure 4 This is a schematic diagram of the pushing component in the utility model from another angle;

[0026] Figure 5 It is a schematic diagram of the push component in the utility model when it is in the first position and the second position;

[0027] Figure 6 It is a schematic diagram of a black processing box in the utility model at a certain angle;

[0028] Figure 7 This is a schematic diagram of the black processing box in the utility model from another angle;

[0029] Figure 8 This is another angled schematic diagram of the black processing box in the utility model;

[0030] Fig. 9 It is a schematic diagram of the development unit and the drum unit in the utility model when they are separated;

[0031] Fig.10 This is a schematic diagram of the black processing box in the present utility model when it is not installed in the correct installation position;

[0032] Fig.11 It is a schematic diagram of the process of installing the black processing box to the imaging device in the utility model;

[0033] Fig.12 It is a schematic diagram of the positions of the black processing box and the first pushing component after the door cover of the utility model is closed;

[0034] Fig.13 It is a schematic diagram of the first pushing surface of the utility model being engaged with the force receiving protrusion of the processing box after the first pushing component moves;

[0035] Fig.14 It is a schematic diagram after the driving force receiving protrusion of the first driving component in the utility model forces the developing roller and the photosensitive drum to separate. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and technical effect of the embodiment of the utility model clearer, the technical scheme of the processing box of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is only a preferred embodiment of the utility model, not all embodiments. Based on the embodiment of the utility model, other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0037] For the convenience of description, the direction of the processing box is now defined. The developing roller (not shown) can rotate around the developing roller axis extending in the left-right direction, and the developing roller connecting part 113 is arranged on the right side of the processing box in the left-right direction; the electrical contact surface of the chip and the photosensitive drum 122 are arranged in the up-down direction, and the electrical contact surface is arranged at the upper end of the processing box in the up-down direction, and the up-down direction is perpendicular to the left-right direction; the direction perpendicular to the left-right direction and the up-down direction is the front-to-back direction.

[0038] like Figure 1-14 As shown, an imaging device 1 in the prior art and a processing box in the present invention that is detachably installed in the imaging device 1 are shown; the two will be introduced in detail below.

[0039]

Imaging equipment

[0040] like Figure 1-5As shown, the imaging device 1 includes a accommodating chamber 3, a door cover 4 that can cover the accommodating chamber, and a box frame 2 that can be installed in the accommodating chamber 3 along the direction from back to front. When the door cover 4 is opened or closed, the box frame 2 can move in the up and down directions in response to the movement of the door cover 4. Specifically, when the door cover 4 is opened, the box frame 2 can move upward for a distance, and when the door cover 4 is closed, the box frame 2 can move downward for a distance. The box frame 2 includes four box accommodating parts 2b arranged at intervals in the front-to-back direction. Four processing boxes with developers of different colors can be matched and installed in the four box accommodating parts 2b. Processing boxes of PY (yellow), PM (magenta), PC (blue), and PK (black) are installed in sequence from front to back. The four processing boxes can be installed together in the imaging device 1 under the support of the box frame 2 to perform printing work together. The four processing boxes with developers of different colors are a processing box set, which can print color images in cooperation with the imaging device 1.The imaging device 1 also includes a movable component 10 arranged at the right end of the lower side of the box frame 2. The movable component 10 can reciprocate in the front-to-back direction relative to the box frame 2 under the control of the imaging device 1. The movable component 10 includes a side plate 9 and a pushing component arranged on the side plate 9. The pushing component can rotate in a direction perpendicular to the left-right direction relative to the side plate 9. There are 4 pushing components, which are arranged in the front-to-back direction, respectively, and are used to push the yellow process box PY, the magenta process box PM, the blue process box PC, and the black process box PK from front to back. For the convenience of description, the yellow process box PY, the magenta process box PM, and the blue process box PC are defined as color process boxes in the following text. The black process box PK is still a black process box, wherein the structure of the pushing component for pushing the color process box is substantially the same, but the structure of the pushing component for pushing the black process box is different from the structure of the pushing component for pushing the color process box. Therefore, the pushing component for pushing the black process box is defined as the first pushing component 11, and the pushing component for pushing the color process box is defined as the second pushing component 12. The first pushing component 11 and the second pushing component 12 can both rotate around their respective first rotation centers 11a and second rotation centers 12a. The first pushing component 11 also includes a first pushing surface 11b facing the front side of the imaging device 1, and the second pushing component 12 also includes a first pushing surface 11b facing the front side of the imaging device 1. The first pushing surface 11b and the second pushing surface 12b can both be used to contact and push the processing box. The first pushing member 11 and the second pushing member 12 are both connected with elastic members (not shown). The elastic force generated by the elastic members acts on the first pushing member 11 and the second pushing member 12 to force the first pushing member 11 and the second pushing member 12 to remain in the first position. After the first pushing member 11 and the second pushing member 12 are acted upon by an external force, they can move from the first position to the second position. Taking the first pushing member 11 as an example, the first pushing member 11 in the first position has at least a portion of its first pushing surface 11b closer to the second position than the first pushing member 11 in the second position. Near the upper side, and the first position is also the position where the first pushing surface 11b can push the processing box; the distance between the first pushing surface 11b and the first rotation center 11a is L1, and the distance between the second pushing surface 12b and the second rotation center 12a is L2, L1 is greater than L2, according to W (torque) = F (force) L (arm), when the first pushing surface 11b and the second pushing surface 12b are respectively pushing the same processing box, compared with the second pushing component 12, the first pushing component 11 only needs a smaller force to rotate its own rotation center, that is, the first pushing component 11 is easier to move from the first position to the second position than the second pushing component 12, and it is also easier to break contact with the processing box. ;

[0041]

Processing box

[0042] like Figure 6-14 1, a processing box in the present invention is shown, specifically, the processing box is a black processing box PK, the black processing box PK contains black developer, and the black processing box PK can be detachably installed in the above-mentioned imaging device 1; the black processing box PK includes a developing unit 110 and a drum unit 120 connected to each other, the developing unit 110 includes a developing frame 111 that can contain developer and a developing roller rotatably supported on the developing frame 111, and a developing roller coupling portion 113 arranged at the right end of the developing frame 111 and rotatable around a first axis, and the developing roller coupling portion 113 can receive external force in the imaging device to rotate the developing roller; the drum unit 120 includes a developing unit 110 and a drum unit 120 connected to each other, the developing unit 110 includes a developing frame 111 that can contain developer and a developing roller rotatably supported on the developing frame 111, and a developing roller coupling portion 113 that is arranged at the right end of the developing frame 111 and can rotate around a first axis, and the developing roller coupling portion 113 can receive external force in the imaging device to rotate the developing roller; The element 120 includes a drum frame 121 for accommodating waste developer, a photosensitive drum 122 rotatably supported on the drum frame 121, and a photosensitive drum coupling portion 123 arranged at the right end of the drum frame 121 and rotatable around a second axis, the photosensitive drum coupling portion 123 can receive external force in the imaging device to rotate the photosensitive drum 122; the black processing box PK also includes a chip (not shown), which can establish a communication connection with the imaging device 1, the chip has an electrical contact surface that is electrically in contact with the imaging device 1, the electrical contact surface and the photosensitive drum 122 are arranged in the up-down direction, and the electrical contact surface is arranged at the upper end of the black processing box PK in the up-down direction; in the black processing box A force receiving protrusion 140 is also provided at the lower end portion on the right side of PK. The force receiving protrusion 140 is installed on the driving side protective cover 121a on the right side of the drum frame 121 and can slide in the front-to-back direction relative to the drum frame 121. Of course, the force receiving protrusion 140 is not limited to being installed on the drum frame 121. It can also be installed on the developing unit 110 or on one end of the photosensitive drum 122. This is not a limitation. Specifically, the force receiving protrusion 140 includes a force receiving surface 140a that can receive the pushing force of the first pushing component 11 of the imaging device 1. At least a portion of the force receiving surface 140a does not face the top of the black processing box PK. Preferably, The force receiving surface 140a does not face the top of the black processing box PK, that is, the force receiving surface 140a can be a surface parallel to the up-down direction, or it can be a surface facing the lower side of the black processing box PK, so as to match the facing direction of the first pushing surface 11b of the first pushing member 11 when it is in the second position, which will help to increase the contact area with the first pushing surface 11b and improve the pushing stability; preferably, the plane where the force receiving surface 140a is located is set parallel to the up-down direction to further increase the contact area with the first pushing surface 11b of the first pushing member 11 when it is in the second position, so as to improve the pushing stability.

[0043] Furthermore, in order to prevent the black processing box PK from losing contact with the force receiving protrusion 140 due to the first pushing component 11 of the imaging device rotating from the first position to the second position after being subjected to force during operation, the force receiving protrusion 140 of the black processing box PK in the utility model is arranged to protrude more downward than the force receiving protrusion of the color processing box, that is, the lower end of the force receiving protrusion 140 of the black processing box PK is arranged on the lower side of the lower end of the force receiving protrusion of the color processing box. In other words, taking the first axis of the developing roller connecting part 113 as a reference, the distance between the lower end of the force receiving protrusion 140 of the black processing box PK and the first axis of the developing roller connecting part 113 in the vertical direction is P1, and the distance between the lower end of the force receiving protrusion of the color processing box and the first axis of the developing roller connecting part in the vertical direction is P2, wherein P1>P2, that is, the protrusion amount of the force receiving protrusion 140 of the black processing box PK is larger, which increases the length of the force receiving surface 140a in the vertical direction to ensure that the force receiving surface 140a is in contact with the first pushing component 11 There is enough engagement to prevent the two from disengaging; further, 30.5mm≦P1≦33.5mm, preferably, 31.5mm≦P1≦33.2mm, more preferably, 32mm≦P1≦32.8mm, when within this range, the protrusion of the force receiving protrusion 140 is appropriate, when the force receiving protrusion 140 is arranged in this structure, even if the first pushing member 11 is accidentally moved from the first position to the second position after being subjected to force, because the protrusion of the force receiving protrusion 140 is sufficient, it is in the second position The first pushing component 11 below will still partially engage with the force receiving protrusion 140, which not only avoids the possibility that the force receiving protrusion 140 protrudes too little and still separates from the first pushing component 11, but also avoids the problem that during the installation of the black processing box PK to the imaging device 1, the force receiving protrusion 140 protrudes too much and interferes with the protrusion 13 of the imaging device 1, thereby causing the problem of being unable to be installed. Therefore, by adopting the force receiving protrusion 140 of the above structure, a balance is achieved between the installation and printing effect of the black processing box PK.

[0044] Usually, the process cartridge and the cartridge rack 2 are both provided with corresponding color markings to remind the operator to install the process cartridge into the corresponding cartridge accommodating portion 2b in the cartridge rack 2. When the black process cartridge PK is correctly installed in the cartridge rack 2, that is, the black process cartridge PK is installed in the cartridge accommodating portion 2b located at the rear side in the cartridge rack 2 (the cartridge accommodating portion 2b for accommodating the black process cartridge PK is located at the upstream side in the installation direction of the black process cartridge PK), the black process cartridge PK can be installed or removed normally. However, if the operator mistakenly installs the black process cartridge PK in the cartridge accommodating portion 2b that should be used to accommodate the color process cartridge, the black process cartridge PK may be removed due to the black cartridge accommodating portion 2b. Compared with the color process cartridges, the force receiving protrusion 140 of the black process cartridge PK has a larger protrusion amount. The force receiving protrusion 140 of the black process cartridge PK is easy to interfere with the second pushing member 12 of the imaging device 1 in the disassembly direction of the process cartridge, resulting in the black process cartridge PK being difficult to be disassembled from the imaging device 1, which greatly affects the operator's experience of use. Therefore, the black process cartridge PK in the utility model is further provided with an anti-misinstallation portion 130, which can be used to prevent the black process cartridge PK from being installed in the cartridge rack accommodating portion 2b of the cartridge rack 2 for accommodating the color process cartridges, so as to avoid the above-mentioned problem. Specifically, the anti-misinstallation portion 130 is arranged at the rear side of the frame of the black process box PK, and is constructed as a protrusion protruding backward from the rear end of the drum frame 121. Therefore, the anti-misinstallation portion 130 can also be called an anti-misinstallation protrusion. Preferably, the anti-misinstallation portion 130 is arranged at a substantially middle position of the black process box PK. In other words, the anti-misinstallation portion 130 and the handle 124 have an overlapping portion in the left and right directions. When the black process box PK is installed in the box frame 2, the anti-misinstallation portion 130 can abut against the supporting plane 2a corresponding to the rear side of the box accommodating portion 2b in the box frame 2. There is an avoidance space above the plane for avoiding the anti-misinstallation portion 130. To allow the black process cartridge PK to be correctly installed, when the black process cartridge PK is accidentally installed in the other accommodating portion 2b of the cartridge frame 2, the color process cartridge is forced to be installed in other positions. During the process of downwardly installing the color process cartridge into the cartridge frame 2, since the spacing between the color process cartridge and the black process cartridge PK is smaller than the protrusion of the anti-misinstallation portion 130, the color process cartridge will interfere with the anti-misinstallation portion 130 of the black process cartridge PK, and the color process cartridge cannot be installed into the cartridge frame. This can remind the operator to change the installation position of the black process cartridge PK until all the process cartridges are installed in the correct installation positions.Further, the anti-mis-installation part 130 is detachably mounted on the drum frame 121, that is, the anti-mis-installation part 130 and the drum frame 121 are separately arranged, and can be specifically installed on the drum frame 121 by, for example, interference fit, or by arranging elastic buckles or other structures on the anti-mis-installation part 130 or the drum frame 121, so that the anti-mis-installation part 130 can be buckled on the drum frame 121, which can be used to install the anti-mis-installation part 130 to prevent the anti-mis-installation part 130 from falling off, which is not limited. By adopting a structure of separate arrangement, the frame of the original black process box PK does not need to be re-molded, but can be common with the frame of the color process box, and the anti-slipping part 130 can be detachably mounted on the frame of the black process box PK by only separately producing the anti-slipping part 130, which greatly reduces the production cost. ;

[0045] To sum up, the utility model can avoid the problem that the force receiving protrusion of the black processing box is separated from the first pushing component of the imaging device during operation, thereby causing the developing roller and the photosensitive drum to not be separated and affecting the printing quality of the processing box by increasing the protrusion amount of the force receiving protrusion of the black processing box. Therefore, this improves the contact stability between the force receiving protrusion and the imaging device, and the separation of the developing roller and the photosensitive drum will be more stable.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A processing box, comprising: A frame having opposite left and right ends in the left-right direction and opposite upper and lower ends in the up-down direction, wherein the left-right direction intersects the up-down direction, and the frame includes a developing frame and a drum frame; a developing roller supported on the developing frame and rotatable around a developing roller rotation axis extending along the left-right direction; a photosensitive drum supported on the drum frame; a developing roller coupling portion, disposed at the right end of the frame in the left-right direction, the developing roller coupling portion being capable of receiving an external rotational driving force and transmitting the rotational driving force to the developing roller; A chip, comprising an electrical contact surface, the electrical contact surface being arranged at the right end of the frame in the left-right direction, the electrical contact surface and the photosensitive drum being arranged in the up-down direction, the electrical contact surface being arranged at the upper end of the frame, and the photosensitive drum being arranged at the lower end of the frame in the up-down direction; a force receiving protrusion having a force receiving surface capable of receiving an external force, the force receiving surface being disposed at the right end of the frame in the left-right direction, the force receiving protrusion being configured to be operably connected to the developing frame and capable of forcing the developing roller to move from a position in contact with the photosensitive drum to a position separated from the photosensitive drum; It is characterized in that, in the up-down direction, the distance between the lower end surface of the force receiving protrusion and the rotation axis of the developing roller coupling portion is P1, wherein 31.5 mm≦P1≦33.2 mm.

2. The process cartridge according to claim 1, wherein: 32mm≦P1≦32.8mm.

3. The process cartridge according to claim 1, wherein: The force receiving surface is configured not to face the upper end of the frame.

4. The process cartridge according to claim 3, wherein: An extending direction of the force receiving surface is arranged parallel to the up-down direction.

5. The process cartridge according to claim 1, wherein: The frame further includes a front-rear direction intersecting the left-right direction and the up-down direction, the frame has a front end and a rear end opposite to each other in the front-rear direction, and the processing box further includes an anti-misinstallation protrusion arranged at the rear end of the frame.

6. The process cartridge according to claim 5, wherein: The process cartridge further includes a handle for gripping, and the mis-installation prevention protrusion has an overlapping portion with the handle in the left-right direction.

7. The process cartridge according to claim 6, wherein: The anti-mis-installation protrusion is separately arranged from the frame.

8. The process cartridge according to claim 1, wherein: The process cartridge is a black process cartridge containing a black developer.

9. The process cartridge according to claim 1, wherein: The force receiving protrusion is mounted on the drum frame and is slidable relative to the drum frame.

Images