Processing box

Abstract

The utility model discloses a processing box which is detachably arranged in a tray of an image forming device, a separation control part and a box pressing unit are arranged on the image forming device, and the processing box comprises a drum unit, a box pressing unit and a processing unit, a developing unit including a developing roller, the developing unit being movable relative to the drum unit, the developing roller being in contact with the photosensitive drum at a first position, and at least a portion of the developing roller being spaced apart from the photosensitive drum at a second position; the protruding part is fixedly arranged on the developing unit and can receive the acting force of the separation control part, so that the developing unit moves between a first position and a second position; and the abutting part is arranged on the drum unit, abuts against the tray and can enable the processing box to be located at a lifting position where the protruding part does not interfere with the separation control part when the acting force of the box pressing unit is not exerted on the processing box. The abutting part is arranged on the processing box, and the protruding part is fixedly arranged on the developing unit, so that contact and separation of the developing part and the photosensitive part are realized.

Description

Technical Field

[0001] The present application relates to the field of image forming technology, and in particular to a processing box. Background Art

[0002] The image forming device forms an image on a recording material (such as paper) using an electrophotographic imaging process. Examples of image forming devices include electrophotographic copiers, electrophotographic printers, fax machines, word processors, and the like. The cartridge includes at least one of an electrophotographic photosensitive drum as a photosensitive member and a developing member (such as a developing roller) that can act on the drum, and the photosensitive member and the developing member may also be integrally constructed as a cartridge (which may be referred to as a process cartridge) that can be detachably mounted in the image forming device. The frame including the photosensitive member in the process cartridge is a photosensitive frame, and the frame including the developing member is a developing frame.

[0003] During the operation of the image forming device, the developing roller contacts and presses the photosensitive drum, so that the developer on the developing roller is transferred to the surface of the photosensitive drum forming a specific electrostatic latent image to complete the development process. However, when the developing roller contacts the photosensitive drum during the image forming device is stopped, the developer carried on the developing roller is unnecessarily deposited on the photosensitive drum, and such developer is deposited on the recording material, resulting in contamination of the recording material; and due to the long-term friction between the photosensitive drum and the developing roller, the deterioration of the developing roller and / or the developer is accelerated. The above problems may occur regardless of whether an elastic layer is provided on the surface of the developing roller. Therefore, in order to solve the above technical problems, it is necessary to separate the photosensitive drum from the developing roller during the period when the image forming device is not performing the development work to extend the service life of both. Utility Model Content

[0004] In order to overcome the problems existing in the above-mentioned prior art, the present application provides a processing box which is detachably mounted in a tray of an image forming device, wherein a separation control component and a box pressing unit are provided on the image forming device, including:

[0005] a drum unit including a photosensitive drum;

[0006] a developing unit including a developing roller, the developing unit being movable relative to the drum unit between a first position in which the developing roller contacts the photosensitive drum and a second position in which at least a portion of the developing roller is spaced apart from the photosensitive drum;

[0007] a protrusion fixedly disposed on the developing unit and capable of receiving an action force of the separation control component to move the developing unit between a first position and a second position;

[0008] The abutting member is provided on the drum unit and abuts against the tray, so that the process cartridge is in a raised position where the protruding portion does not interfere with the separation control member when the process cartridge is not subjected to the force of the cartridge pressing unit.

[0009] In some embodiments, the abutment component includes a movable protrusion and a reset elastic component, one end of the reset elastic component abuts against the drum unit, and the other end abuts against the movable protrusion, and the movable protrusion abuts against the tray under the action of the reset elastic component, so that the processing box is in the raised position.

[0010] In some embodiments, the moving protrusion is rotatably disposed on the drum unit, and a rotation axis of the moving protrusion extends along a width direction of the process cartridge.

[0011] In some embodiments, one of the drum unit and the movable protrusion is provided with a support shaft, and the other is provided with an axial hole rotatably matched with the support shaft.

[0012] In some embodiments, the moving protrusion is slidably disposed on the drum unit.

[0013] In some embodiments, the movable protrusion is provided with a claw, and the drum unit is provided with an engaging portion that slidably cooperates with the claw. The movable protrusion can slide along the length direction or width direction of the processing box or in a direction intersecting the width direction and height direction of the processing box.

[0014] In some embodiments, the moving protrusion is provided with a contact portion for increasing the contact area between the moving protrusion and the tray, and the contact portion extends obliquely upward.

[0015] In some embodiments, the movable protrusion can slide along the height direction of the processing box.

[0016] In some embodiments, the movable block is provided with a convex portion abutting against the tray, and the convex portion extends downward along the height direction.

[0017] In some embodiments, the movable protrusion is provided with a groove, and the drum unit is provided with a rib that slidably cooperates with the groove.

[0018] In some embodiments, the first end of the moving protrusion is engaged with the opening of the drum unit and can move in the opening along the height direction.

[0019] In some embodiments, a contact portion is provided on the movable protrusion, and the contact portion has a lower abutting surface. An upper abutting surface is provided on the drum unit, and when the lower abutting surface abuts against the upper abutting surface, the downward movement of the movable protrusion stops.

[0020] In some embodiments, when the cartridge pressing unit presses the process cartridge downward to move it downward, the moving protrusion abuts against the tray and is pushed to move and compress the resetting elastic component;

[0021] When the box pressing unit stops pressing the processing box, the elastic restoring force of the reset elastic component pushes the moving protrusion to reset, and the moving protrusion abuts against the tray when moving, so that the processing box is lifted to the lifting position.

[0022] In some embodiments, the abutting component is an elastic component, one end of which is connected to the drum unit and the other end is suspended;

[0023] When the process cartridge is mounted on the tray, the other end of the elastic member abuts against the tray, and the process cartridge is lifted to a lifted position under the elastic action of the elastic member.

[0024] In some embodiments, the abutment member and the protrusion are disposed on the same side in the length direction of the process cartridge.

[0025] The beneficial effect of the utility model compared with the prior art is as follows: the utility model prevents interference between the processing box and the image forming device during the installation process by arranging an abutment component and a fixed protrusion on the processing box, further realizes that the photosensitive drum is in contact with the developing roller when the image forming device is developing, and the photosensitive drum is separated from the developing roller when the image forming device stops developing, thereby solving the technical problems in the prior art of long-term contact between the photosensitive drum and the developing roller causing the deposition of colorant on the photosensitive drum and thus contaminating the photosensitive drum, and long-term friction between the photosensitive drum and the developing roller accelerating the deterioration of the developing roller and / or the developer, thereby extending the service life of the photosensitive drum and the developing roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 , Figure 2 , Figure 3 is a cross-sectional view of an image forming apparatus.

[0028] Figure 4 It is a perspective view of a storage element pressing unit and a box pressing unit.

[0029] Figure 5 , Figure 6 It is a perspective view of an image forming apparatus.

[0030] Figure 7 It is a perspective view of the developing separation control unit.

[0031] Figure 8 Schematic diagram of the tray and box pressing unit of this embodiment.

[0032] Fig. 9 Schematic diagram of the tray of this embodiment.

[0033] Fig.10 FIG. 4 is a schematic diagram of the tray of this embodiment in another direction.

[0034] Fig.11 It is a schematic diagram of the tray of this embodiment in another direction.

[0035] Fig.12 Schematic diagram of the processing box of embodiment 1.

[0036] Fig.13 It is a schematic diagram of the exploded view of the processing box of the first embodiment.

[0037] Fig.14 It is a schematic diagram of another direction of the drum unit in the process box of the first embodiment.

[0038] Fig.15a , 15b 15c is a schematic diagram of the processing box installed in the image forming device before the door is closed in the first embodiment.

[0039] Fig.16a , 16b 16c is a schematic diagram of the process box installed in the image forming device after the door is closed in the first embodiment.

[0040] Fig.17 Schematic diagram of the processing box of the second embodiment.

[0041] Fig.18 It is a schematic diagram of the exploded view of the processing box of the second embodiment.

[0042] Fig.19 This is a schematic diagram of the process box being installed on the tray before the door is closed in the second embodiment.

[0043] Fig. 20 This is a schematic diagram of the process box installed on the tray after the door is closed in the second embodiment.

[0044] Fig.21 Schematic diagram of the processing box of embodiment 3.

[0045] Fig. 22 It is a schematic diagram of the exploded view of the processing box of the third embodiment.

[0046] Fig.23 It is a schematic diagram of the exploded view of the processing box of the third embodiment from another direction.

[0047] Fig.24 This is a schematic diagram of the process box being installed on the tray before the door is closed in the third embodiment.

[0048] Fig.25 This is a cross-sectional view of the process box installed on the tray before the door is closed in the third embodiment.

[0049] Fig.26 This is a schematic diagram of the process box installed on the tray after the door is closed in embodiment 3.

[0050] Fig. 27 This is a cross-sectional view of the process box installed on the tray after the door is closed in Example 3.

[0051] Fig.28 It is a schematic diagram of a process box of a modified example of the third embodiment.

[0052] Fig.29 It is a schematic diagram of the process box in another direction of a variation of the third embodiment.

[0053] Fig.30 Schematic diagram of the processing box of embodiment 4.

[0054] Fig.31 It is a schematic diagram of the exploded view of the processing box of the fourth embodiment.

[0055] Fig.32 Schematic diagram of the abutment portion in the processing box of the fourth embodiment.

[0056] Fig.33 It is a schematic diagram of another direction of the abutting portion in the processing box of the fourth embodiment.

[0057] Fig.34 This is a schematic diagram of the fourth embodiment of the process box being installed on the tray before the door is closed.

[0058] Fig.35 This is a schematic diagram of the fourth embodiment in which the processing box is installed on the tray after the door is closed.

[0059] Fig.36 Schematic diagram of the processing box of embodiment 5.

[0060] Fig.37 This is a schematic diagram of the process box being installed on the tray before the door is closed in the fifth embodiment.

[0061] Fig.38 This is a schematic diagram of the process box installed on the tray after the door is closed in the fifth embodiment. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0063] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more, and the term "multiple" refers to two or more; the terms "connected", "fixed", etc. should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0064] In the description of this specification, it should be understood that the directional words such as "upper" and "lower" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0065] Embodiment 1:

[0066] Figure 1 , Figure 2 , Figure 3 is a cross-sectional view of an image forming apparatus.

[0067] like Figure 1 As shown, the main component 170 of the image forming apparatus is provided with four processing cartridges 100 (100Y, 100M, 100C, 100K), namely, a first processing cartridge 100Y, a second processing cartridge 100M, a third processing cartridge 100C and a fourth processing cartridge 100K. It is arranged basically horizontally. The rotational driving force is respectively from the driving output part of the main component 170 of the image forming apparatus, and the main component 170 of the image forming apparatus provides bias voltages (charging bias, developing bias, etc.) to the first to fourth processing cartridges 100 (100Y, 100M, 100C, 100K), respectively. The processing cartridge is installed into the main component of the image forming apparatus via a tray 171. Specifically, the tray 171 is configured to be able to move in a substantially horizontal direction (such as when the main component 170 of the image forming apparatus is installed on a horizontal surface). Figure 1The four processing boxes 100 are installed in each installation part of the tray. When the tray 171 is moved into the main assembly 170 of the image forming apparatus, the multiple processing boxes 100 are moved into the main assembly of the image forming apparatus together with the tray 171. When the processing boxes need to be replaced, the multiple processing boxes can be moved together with the tray 171 to the outside of the image forming main assembly 170.

[0068] like Figure 1 - Figure 3 As shown, the intermediate transfer unit 12 as a transfer component is arranged below the first to fourth process boxes 100 (100Y, 100M, 100C, 100K). The intermediate transfer unit 12 includes a driving roller 12e, a steering roller 12c and a tension roller 12b, and a flexible transfer belt 12a extending around them. The lower surface of the photosensitive drum of each of the first to fourth process boxes 100 (100Y, 100M, 100C, 100K) contacts the upper surface of the transfer belt 12a. The contact portion between them is the primary transfer portion. Inside the transfer belt 12a, the primary transfer roller 12d is arranged to be opposite to the photosensitive drum 104. The secondary transfer roller 6 contacts the steering roller 12c through the transfer belt 12a. The contact portion between the transfer belt 12a and the secondary transfer roller 6 is the secondary transfer portion.

[0069] Next, we will refer to Figure 4 , Figure 8 - Fig.11 As stated, Figure 4 Part (a) describes the details of the box pressing mechanism. Figure 4 Part (a) shows only the process cartridge 100, the tray 171, the cartridge pressing mechanisms 190 and 191, and the intermediate transfer unit 12 before the front door 11 is closed. Figure 4 Part (b) shows only the process cartridge 100, the tray 171, the cartridge pressing mechanism 191, and the intermediate transfer unit 12 after the front door 11 is closed.

[0070] like Figure 8 and Fig. 9As shown, a mounting portion 171a is provided on the tray 171, and each mounting portion 171a corresponds to one processing box 100, that is, there are four mounting portions 171a corresponding to four processing boxes 100 (100Y, 100M, 100C, 100K), and each mounting portion 171a is provided with abutment portions on both sides of the Y direction, that is, in the Y2 direction, each mounting portion 171a is provided with a first abutment portion 171b1, a second abutment portion 171b2 and a third abutment portion 171b3, the first abutment portion 171b1 is a horizontal plane extending in the X direction, the second abutment portion 171b2 is a vertical plane extending in the Z direction, and the third abutment portion 171b3 is a horizontal plane extending in the Y direction. In the X direction, the second abutment portion 171b2 is a vertical plane extending in the Z direction, and the third abutment portion 171b3 is a horizontal plane extending in the Y direction. The second abutting portion 171b2 and the third abutting portion 171b3 are arranged on both sides of each mounting portion 171a, that is, there are two second abutting portions 171b2 and two third abutting portions 171b3 in each mounting portion 171a, and the first abutting portion 171b1 is arranged close to one of the second abutting portions 171b2 or the third abutting portions 171b3, and is arranged above the positioning portion 171VR near the bottom of the mounting portion 171a; in the Y1 direction, a fourth abutting portion 171b4 is arranged on the mounting portion 171a, and the fourth abutting portion 171b4 is a boss structure, which is arranged parallel to the other second abutting portion 171b2 or the third abutting portion 171b3, and a positioning portion 171VL is also arranged near the bottom of the mounting portion 171a.

[0071] Here, the process box 100 receives a driving force during image formation, and further receives a reaction force from the primary transfer roller 12d in the direction of the arrow Z1. Therefore, it is necessary to press the process box in the Z2 direction so as to maintain a stable posture during the image forming operation to prevent the process box from separating from the positioning parts 171VR and 171VL.

[0072] To achieve this, in this embodiment, the image forming apparatus main assembly 170 is provided with a box pressing mechanism (190, 191). In the box pressing mechanism (190, 191), the storage element pressing unit 190 acts on the non-driving side, and the box pressing unit 191 acts on the driving side. This will be described in more detail below.

[0073] By closing Figure 1 The front door 11 shown, Figure 4 The storage element pressing unit 190 and the box pressing unit 191 shown are lowered in the direction of arrow Z2. The storage element pressing unit 190 mainly includes a main component side electrical contact (not shown) that can contact with the electrical contact of the storage element (not shown) set in the processing box 100. The electrical contacts of the storage element and the main component side can contact and separate with each other through a linkage mechanism (not shown) linked with the front door 11. That is, the contacts are brought into contact with each other by closing the front door 11, and the contacts are disconnected by opening the front door 11.

[0074] By doing so, when the process cartridge 100 moves together with the tray 171 inside the main assembly of the image forming apparatus, the electrical contacts are not rubbed, and the electrical contacts are retracted from the insertion / removal track of the process cartridge 100, whereby the tray 171 can be inserted / removed without being hindered by the electrical contacts. The storage element pressing unit 190 also serves to press the process cartridge 100 against the above-mentioned positioning portion 171VR. In addition, similar to the storage element pressing unit 190, the cartridge pressing unit 191 also descends in the direction of the arrow Z2 in conjunction with the operation of closing the front door 11 and serves to press the process cartridge 100 against the above-mentioned positioning portion 171VL.

[0075] like Figure 5 , Figure 6 , Fig.12 As shown, the processing box 100 in this embodiment 1 has a developing coupling component (rotational driving force receiving portion) 132 and a drum coupling component (photosensitive component coupling component) 143. The front door 11 is closed, and the main component side drum drive coupling 180 and the main component side developing drive coupling 185 for transmitting the driving force to the processing box protrude in the direction of arrow Y1 through a connecting rod mechanism (not shown). In addition, by opening the front door 11, the drum drive coupling 180 and the developing drive coupling 185 are retracted in the direction of arrow Y2. The purpose of doing so is, on the one hand, to make the main component side drum drive coupling 180 and the main component side developing drive coupling 185 better connected to the drum coupling component and the developing coupling component of the processing box, respectively, so as to receive the driving force. On the other hand, it prevents the insertion / removal of the tray 171 from being hindered.

[0076] By closing the front door 11 and starting to drive the image forming apparatus main assembly 170, the above-mentioned drum drive coupling 180 is engaged with the drum coupling member 143. In addition, the developing drive coupling 185 on the main assembly side is engaged with the developing coupling member 132 to transmit the drive to the process cartridge 100. The drive transmission to the process cartridge 100 is not limited to being realized at the two locations as described above, and a mechanism for transmitting the drive only to the drum coupling to transmit the drive to the developing roller may be provided.

[0077] like Figure 4 , Figure 7 As shown, the developing separation control unit 195 controls the spacing and contact operation of the developing unit 109 relative to the photosensitive drum 104 by engaging with a portion of the developing unit 109. The developing separation control unit 195 is disposed below the image forming apparatus main assembly 170.

[0078] The developing separation control unit 195R includes four separation control components (force applying components) 196R corresponding to the process cartridges 100 (100Y, 100M, 100C, 100K). The four separation control components have substantially the same shape. The developing separation control unit 195R is always fixed to the main assembly of the image forming apparatus. However, the separation control component 196R is configured to be movable in the W41 and W42 directions by a control mechanism (not shown). The directions W41 and W42 are substantially parallel to the arrangement direction (i.e., the X1 and X2 directions) of the process cartridges disposed in the main assembly 170 of the image forming apparatus. The separation control component 196R includes a first force applying surface (force applying portion, contact force applying portion) 196Ra and a second force applying surface (retraction force applying portion, separation force applying portion) 196Rb that protrude toward the process cartridge 100 and face each other across a space 196Rd. The first force applying surface 196Ra and the second force applying surface 196Rb are connected to each other by a connecting portion 196Rc on the lower surface side of the image forming apparatus main assembly 170 .

[0079] The developing separation control unit 195L has four separation control components (force applying components) 196L corresponding to the process cartridges 100 (100Y, 100M, 100C, 100K). The four separation control components have substantially the same shape. The developing separation control unit 195L is always fixed to the image forming apparatus main assembly. However, the separation control component 196L is configured to be movable in the W41 and W42 directions by a control mechanism (not shown). The separation control component 196L includes a first force applying surface (force applying portion, contact force applying portion) 196La and a second force applying surface (retraction force applying portion, separation force applying portion) 196Lb that protrude toward the process cartridge 100 and face each other across a space 196Ld. The first force applying surface 196La and the second force applying surface 196Lb are connected to each other by a connecting portion 196Lc on the lower surface side of the image forming apparatus main assembly 170.

[0080] like Fig.12 , Fig.13 As shown, each of the first to fourth process cartridges 100 (100Y, 100M, 100C, 100K) of the first embodiment includes a drum unit 108 having a photosensitive drum 104 (photosensitive member) and a charging device as a processing device acting on the photosensitive drum 104. Here, the drum unit 108 may have a cleaning device and a charging device as a processing device. In addition, each of the first to fourth process cartridges 100 (100Y, 100M, 100C, 100K) includes a developing unit 109 having a developing device for developing an electrostatic latent image on the photosensitive drum 104. In each of the first to fourth process cartridges 100, the drum unit 108 and the developing unit 109 are connected to each other.

[0081] like Figure 12 to Figure 14 As shown, the processing box 100 includes a drum unit 108 and a developing unit 109. The processing box 100 is roughly in the shape of a rectangular box, with the Y1 and Y2 directions being the length directions of the processing box 100, the X1 and X2 directions being the width directions of the processing box 100, and the Z1 and Z2 being the height directions of the processing box 100. The drum unit 108 is provided with a drum frame (not shown in the figure), a driving side box cover component 116 connected to the drum frame, a non-driving side box cover component, a photosensitive drum 104, and a photosensitive component coupling component 143; the developing unit 109 is provided with a developing roller 106 (developing component), a developing cover component 128, and a developing coupling component 132, etc. The driving side box cover component 116 can be connected to the drum frame as a whole or in a split state. In the present embodiment, the driving side box cover component 116 is provided as a whole with the drum frame.

[0082] The developing roller 106 and the photosensitive drum 104 are arranged relative to each other in the width direction (X1 and X2 directions). When the image forming device is in operation, the developing roller 106 and the photosensitive drum 104 need to be in close contact. When the image forming device is not in operation, the developing roller 106 and the photosensitive drum 104 need to be separated by a certain distance to avoid problems such as the developing roller 106 being in contact with the photosensitive drum 104 for a long time, which may cause the photosensitive drum 104 to be contaminated by excess developer attached to the developing roller 106, or the developing roller 106 to be deformed, or the photosensitive drum 104 to be worn.

[0083] Based on this, the drum unit 108 and the developing unit 109 are configured to be able to move relative to each other, so that the developing roller 106 and the photosensitive drum 104 can be in contact when the image forming device is working, and separated (spaced apart) when not working. The developing unit 109 is configured to be able to move between a first position (developing position) and a second position (spaced position) relative to the drum unit 108. When the developing unit 109 is in the first position, the developing roller 106 is in contact with the photosensitive drum 104, and the toner can be transferred from the developing roller 106 to the photosensitive drum 104; when the developing unit 109 is in the second position, at least a portion of the developing roller 106 is separated (spaced apart) from the photosensitive drum 104.

[0084] like Figure 12 to Figure 14 As shown, the drum unit 108 and the developing unit 109 are rotatably connected through the driving side box cover component 116 and the non-driving side box cover component. Specifically, the driving side box cover component 116 is integrally arranged with the drum frame, and has an upper end portion with an upper end surface and a lower end portion with a lower end surface. A first circular hole portion on which a photosensitive component coupling component 143 is sleeved is arranged on one side close to the lower end surface. An accommodating portion 116a is arranged between the first circular hole portion and the upper end portion. The accommodating portion 116a is in a rectangular structure and is a vertical groove when viewed in the Y1 direction. A locking groove 116a1 is arranged at the upper end of the bottom of the groove, and an axial hole (preferably a small circular hole) is arranged on each of the two opposite groove walls of the groove.

[0085] A second circular hole portion 116b is provided parallel to the accommodating portion 116a and close to the side of the developing unit 109. When the developing unit 109 and the drum unit 108 are assembled together, the second circular hole portion 116b can accommodate the developing coupling member 132.

[0086] like Fig.13 and Fig.14 As shown, a circular groove portion 116c is provided on the driving side box cover component 116 near the second circular hole portion 116b and toward the side of the developing unit 109, and a first elastic component 19 and a retaining component 18 are provided in the circular groove portion 116c. One end of the first elastic component 19 abuts against the bottom of the circular groove portion 116c, and the other end abuts against the retaining component 18, and plays a role in supporting the retaining component 18. The retaining component 18 can move under the action of the first elastic component 19, and the moving direction of the retaining component 18 is along the X-axis direction. The first elastic component 19 is preferably a compression spring, and the retaining component 18 is preferably a sphere.

[0087] like Fig.13 and Fig.14 As shown, an abutment component is arranged in the accommodating portion 116a, and the abutment component includes a moving protrusion 15 and a reset elastic component 17. One end of the reset elastic component 17 abuts against the engaging groove 116a1, and the other end abuts against the moving protrusion 15. Support shafts are respectively arranged on both sides of the moving protrusion 15 (both sides of the X direction). The support shafts are preferably circular protrusions 15a. The two circular protrusions 15a are arranged opposite to each other and are respectively rotatably engaged with the small circular holes 116a2 on the accommodating portion 116a. The moving protrusion 15 can rotate and move around the circular protrusion 15a in the accommodating portion 116a under the action of the reset elastic component 17. The rotation axis of the moving protrusion 15 is along the X-axis direction (the width direction of the processing box). The reset elastic component 17 is preferably a spring sheet. The spring sheet is V-shaped, one arm of which abuts against the engaging groove 116a1, and the other arm abuts against the moving protrusion 15.

[0088] like Fig.13 As shown, the developer cover component 128 is integrally provided with a protrusion 152, which is protrudingly provided on the process box, and a contact end and a separation end are provided on the protrusion 152, and the contact end and the separation end are arranged oppositely, that is, the contact end faces the developer unit 109, and the separation end faces the drum unit 108. When the contact end abuts against the separation control component 196R at the machine end and moves along the W42 direction (X2 direction), the photosensitive drum and the developer roller contact, and when the separation end abuts against the separation control component 196R at the machine end and moves along the W41 direction (X1 direction), the photosensitive drum and the developer roller separate. Here, the protrusion 152 can be integrally formed with the developer cover component 128, or can be separately fixedly connected.

[0089] like Fig.13As shown, a third circular hole 128 b is further provided in the middle portion of the developing cover member 128 , through which the developing coupling member 132 passes. The developing cover member 128 can rotate around the rotation axis of the developing coupling member 132 .

[0090] like Fig.13 As shown, a protrusion 128a is also provided on the side of the developer cover component 128 close to the drum unit 108, which extends toward the drum unit 108 and is abutted and supported by the retaining component 18 in the circular groove portion 116c. When the developer cover component 128 rotates, the retaining component 18 can move along the protrusion 128a under the action of the first elastic component 19.

[0091] In addition, if Fig.12 As shown, a second elastic component 16 is provided on the drum frame and the developing frame near the non-driving side box cover component, one end of the second elastic component 16 abuts against the drum frame, and the other end abuts against the developing frame, and can elastically deform and elastically restore between the two to achieve contact and separation of the photosensitive drum and the developing roller.

[0092] like Figure 3 15, the front door 11 is opened, the tray 171 is moved in the X direction to the outside of the image forming main assembly 170, and the process cartridge 100 is referred to Figure 3 The movable protrusion 15 on the driving side box cover component 116 abuts against the first abutment portion 171b1 on the tray under the action of the reset elastic component 17, so that the processing box on the driving side is lifted in the mounting portion 171a (that is, the processing box is in the lifted position). When the processing box is in the lifted position, the lower end surface of the driving side box cover component 116 does not coincide with the positioning portion 171VR. At this time, the protrusion 152 on the developing cover component 128 is located above the separation control component 196R on the image forming device (Z1 direction), that is, the protrusion 152 will not interfere with the separation control component 196R, and the box pressing unit 191 does not abut against the processing box. In this way, the tray 171 accommodating the processing box 100 can be moved out and inserted in the X direction without being interfered by any structure.

[0093] like Figure 1As shown in FIG. 16 , when the tray 171 is moved in the X direction to the inside of the image forming main assembly 170 and the front door 11 is closed, the box pressing unit 191 on the image forming device will descend in the direction of the arrow Z2 and abut against the upper end surface of the driving side box cover component 116 of the processing box, or abut against other end surfaces of the processing box, so that the processing box 100 is pressed down, and at this time, the moving protrusion 15 abutting against the first abutting portion 171b1 on the tray is pushed to move the compression reset elastic component 17 in the Z2 and Y1 directions (rotating and moving the compression reset elastic component 17 around the circular protrusion 15a), and the moving protrusion 15 is stabilized to be engaged in the tray, that is, the processing box 100 is stabilized to be engaged in the image forming device; and as shown in FIG. Fig.16c As shown, the protrusion 152 falls into the space 196Rd on the separation control member 196R.

[0094] In this way, when the machine receives a print work instruction, the developing coupling component 132 starts to rotate, and the separation control component 196R moves along the W42 direction (X2 direction), driving the protrusion 152 to move toward the W42 direction. At this time, the developing cover component 128 rotates clockwise around the rotation axis of the developing coupling component 132, thereby driving the lower side of the developing unit 109 to approach the lower side of the drum unit 108, and the second elastic component 16 connecting the drum unit 108 and the developing unit 109 is elastically deformed, and the developing roller 106 contacts the photosensitive drum 104 (first position) to realize the developing work, and when the developing cover component 128 rotates around the rotation axis of the developing coupling component 132, the retaining component 18 also moves relatively on the protrusion 128a, that is, moves from the upper side of the protrusion 128a to the lower side, so that the developing roller 106 remains in contact with the photosensitive drum 104. Ensure the continuous progress of the developing work; when the printing work instruction is completed, the developing coupling component 132 stops rotating, and the separation control component 196R will move along the W41 direction (X1 direction), driving the protrusion 152 to move toward the W41 direction (X1 direction). At this time, the developing cover component 128 will rotate counterclockwise around the rotation axis of the developing coupling component 132, and the second elastic component 16 will recover elastically, thereby driving the lower side of the developing unit 109 away from the lower side of the drum unit 108, and the developing roller 106 is separated from the photosensitive drum 104 (second position), and the developing work is completed. When the developing cover component 128 rotates counterclockwise around the rotation axis of the developing coupling component 132, the retaining component will also move relatively on the protrusion 128a, that is, it moves from the lower side on the protrusion 128a to the upper side, so that the developing roller 106 is maintained in the second position separated from the photosensitive drum 104.

[0095] When the toner in the process cartridge is used up and the process cartridge needs to be replaced, the front door 11 is opened, the cartridge pressing unit 191 moves along the Z1 direction, and no longer presses the process cartridge 100. When the tray 171 is pulled out of the image forming device along the X2 direction, the protrusion 152 on the process cartridge 100 interferes with the separation control component 196R, the process cartridge moves / shakes slightly, and the moving protrusion 15 is ejected back to the initial position under the elastic restoring force of the reset elastic component 17 (the moving protrusion 15 moves along the Z1 and Y2 directions). During the movement of the movable protrusion 15, it abuts against the first abutment portion 171b1 and exerts a force on the first abutment portion 171b1. The reaction force of the first abutment portion 171b1 on the movable protrusion 15 acts on the entire processing box, and the processing box is lifted (moved along the Z1 direction) to the lifted position. The protrusion 152 moves upward away from the space 196Rd on the separation control component 196R and no longer interferes with the separation control component 196R. The tray 171 is smoothly pulled out of the image forming device, and the processing box can be replaced.

[0096] Embodiment 2

[0097] like Figures 17 to 20As shown, the difference between the second embodiment and the first embodiment lies in the different structures of the abutment components. The abutment components here include a moving protrusion 25 and a reset elastic component 27. The moving protrusion 25 is slidably arranged in the accommodating portion 116a. The moving protrusion 25 is provided with a claw 25a at one end (the end in the Y1 direction) facing the drum unit 108. The accommodating portion 116a of the driving side box cover component 216 is provided with an engaging portion (not shown in the figure) engaged with the claw 25a. The engaging portion can be a slide groove, which extends along the Y direction. The reset elastic component 27 is arranged in the accommodating portion 116a, one end of which abuts against the bottom of the accommodating portion 116a, and the other end abuts against the moving protrusion 25, so that the moving protrusion 25 can move under the action of the reset elastic component 27. The moving direction of the moving protrusion 25 is the Y direction (i.e., the length direction of the processing box); the reset elastic component 27 is preferably a compression spring. The end of the moving protrusion 25 facing away from the drum unit 108 is provided with a guide surface, which is an inclined surface, and the lower end of the inclined surface is closer to the drum unit 108 than the upper end. When the process cartridge is installed in the mounting portion 171a, the guide surface abuts against the first abutting portion 171b1, and abuts against the first abutting portion 171b1 under the action of the reset elastic component 27 to make the process cartridge in a raised position, and the protrusion 152 is located above the separation control component 196R and does not interfere with it. After the tray 171 is moved into the image forming device and the front door 11 is closed, the cartridge pressing unit 191 on the image forming device will descend in the direction of arrow Z2, so that the process cartridge 100 is pressed down, and the moving protrusion 25 abutting against the first abutting portion 171b1 moves in the direction of Y1 to compress the reset elastic component 27, and the moving protrusion 25 is pressed into the tray, and the protrusion 152 falls into the space 196Rd on the separation control component 196R, and the process cartridge is installed in place.

[0098] When the toner in the processing box is used up and the processing box needs to be replaced, the front door 11 is opened, and when the tray is pulled out of the image forming device along the X2 direction, the protrusion 152 on the processing box will interfere with the separation control component 196R, and the processing box moves. The moving protrusion 25 extends out along the Y2 direction under the elastic recovery force of the reset elastic component 27. During the movement of the moving protrusion 25, the guiding surface (inclined surface) abuts against the first abutment portion 171b1 and has a force on the first abutment portion 171b1. The reaction force of the first abutment portion 171b1 on the guiding surface acts on the entire processing box, and the processing box is lifted (moved along the Z1 direction), and the protrusion 152 leaves the space 196Rd on the separation control component 196R upward and no longer interferes with the separation control component 196R. The tray is smoothly pulled out of the image forming device, and the processing box can be replaced.

[0099] The rest is the same as that of the first embodiment and will not be described in detail here.

[0100] Embodiment 3

[0101] like Figure 21 to Figure 27 As shown, the difference between the third embodiment and the first embodiment is that the structure of the abutting component and the position where it is set on the driving side box cover component are different, and the position where it abuts against the tray is also different.

[0102] In this embodiment, the accommodating portion 116a is arranged on the side of the driving side box cover component 116 facing the developing unit 109, and the abutting component includes a moving protrusion 35 and a reset elastic component 37. The moving protrusion 35 is provided with a claw 35b at one end facing the drum unit 108, and a protrusion 35a at the end away from the drum unit 108. The accommodating portion 116a of the driving side box cover component 116 is provided with an engaging portion (not shown in the figure) engaged with the claw 35b. The reset elastic component 37 is arranged in the accommodating portion 116a, one end of which abuts against the bottom of the accommodating portion 116a (engaging groove 116a1), and the other end abuts against the moving protrusion 35, so that the moving protrusion 35 can move under the action of the reset elastic component 37.

[0103] When the front door 11 is opened, the process cartridge is installed in the installation portion of the tray 171. In the absence of other external forces, the movable protrusion 35 on the process cartridge 100 abuts against the second abutting portion 171b2 on the tray under the action of the reset elastic member 37, and the process cartridge is lifted as a whole. Fig.24 and Fig.25 As shown (i.e., the processing box is in the raised position); when the front door 11 is closed, the box pressing unit 191 on the image forming device will descend in the direction of arrow Z2, abutting against the upper end surface of the driving side box cover component 116 of the processing box, or abutting against other end surfaces of the processing box, so that the processing box 100 is rotated and pressed down, and the moving protrusion 35 abutting against the second abutting portion 171b2 on the tray moves toward the Z2 and X2 directions to compress the reset elastic component 37, and the moving protrusion 35 is stabilized to be engaged in the tray, that is, the processing box 100 is stabilized to be engaged in the image forming device as shown in FIG. Fig.26 and Fig. 27 shown.

[0104] The rest is the same as that of the first embodiment and will not be described in detail here.

[0105] Modification 1:

[0106] like Fig.28 , Fig.29As shown, on the basis of Example 3, the structure of the abutment component is slightly changed. In order to increase the abutment area between the protrusion 35a on the movable protrusion 35 and the second abutment portion 171b2 on the tray, so that the processing box and the tray abut more stably, an abutment portion 35a1 is provided on the front end side of the protrusion 35a away from the drum unit. The abutment portion 35a1 intersects with the protrusion 35a and extends obliquely toward the Z1 direction (towards upward). One end of the abutment portion 35a1 is suspended, and the other end is connected to the protrusion 35a. It can be provided integrally with the protrusion 35a or separately.

[0107] The rest is the same as that of the third embodiment and will not be described in detail here.

[0108] Embodiment 4

[0109] like Figure 30 to Figure 35 As shown, another abutment component of the processing box is used to abut against the tray to achieve stable installation of the processing box.

[0110] like Figure 31 to Figure 33 As shown, the abutment component includes a moving protrusion 45 and a reset elastic component 47, the moving protrusion 45 includes a first end 45a and a second end 45e, and a convex portion 45g, a concave portion 45f, a groove 45b and a contact portion 45c arranged between the first end 45a and the second end 45e, the first end 45a and the second end 45e are arranged opposite to each other, the convex portion 45g is protrudingly arranged close to the first end 45a, and extends along the Z2 direction, the concave portion 45f is arranged close to the convex portion 45g, and an elastic component engaging portion 45d is protrudingly arranged on the bottom end surface thereof, the contact portion 45c is close to the second end 45e, and a lower abutment surface is arranged thereon, and the groove 45b is arranged between the concave portion 45f and the contact portion 45c, and is arranged opposite to the concave portion 45f.

[0111] like Figure 30 to Figure 33As shown, the driving side box cover component 116 is provided with a receiving portion for accommodating the moving protrusion 45, and the receiving portion is provided with an opening portion 116f that engages and abuts with the first end 45a of the moving protrusion 45, the first end 45a can move up and down (move in the Z direction) in the opening portion 116f, and a convex rib 116d that matches the groove 45b of the moving protrusion 45, and an upper abutting surface 116b1 is also provided on the second circular hole portion, which abuts with the lower abutting surface of the contact portion 45c of the moving protrusion 45, and when the contact portion 45c abuts with the upper abutting surface 116b1, the movement (downward movement) of the moving protrusion 45 along the Z2 direction stops. The second end 45e of the moving protrusion 45 can be suspended in the receiving portion, or it can abut with the other side opposite to the opening portion 116f. Through the arrangement of the above structure, the moving protrusion 45 is stably connected to the driving side box cover component 116. In addition, a resetting elastic member 47 is provided, one end of which is engaged with the elastic member engaging portion 45d on the moving protrusion 45, and the other end of which is in contact with the upper end portion 116e of the driving side cover member 116, and can be elastically deformed and elastically restored between the moving protrusion 45 and the driving side cover member 116. In the initial state, the force of the resetting elastic member 47 causes the moving protrusion 45 to be in a position where the contact portion 45c is in contact with the upper contact surface 116b1, that is, the first end 45a of the moving protrusion 45 is located at the lower end or near the lower end of the opening 116f.

[0112] See also Fig.34 When the front door 11 is opened and the processing box 100 is installed on the tray 171, the protrusion 45g on the movable protrusion 45 abuts against the third abutment portion 171b3 on the tray 171, and under the action of the reset elastic component 47, the first end 45a of the movable protrusion 45 is located at the lower end of the opening 116f, the processing box 100 is lifted (in the lifted position), and the protrusion 152 does not fall into the space 196Rd of the separation control component 196R, so that the tray 171 and the processing box 100 can be smoothly moved into the image forming device.

[0113] When the front door 11 is closed, see Fig.35 , the movable protrusion 45 is stably abutted against the tray 171, and the processing box 100 descends in the direction of arrow Z2 under the action of the box pressing unit 191 on the image forming device, that is, the driving side box cover component 116 or the other end of the processing box abutting against the box pressing unit 191 moves downward, thereby driving the opening portion 116f, the convex rib 116d, and the upper abutment surface 116b1 on the driving side box cover component 116 to also descend, until the processing box 100 is stabilized and engaged in the image forming device, and the protrusion 152 falls into the space 196Rd on the separation control component 196R, at this time, the reset elastic component 47 is elastically compressed, and the first end 45a on the movable protrusion 45 is located at the upper end or near the upper end of the opening portion 116f.

[0114] When the toner in the processing box is used up and the processing box needs to be replaced, the front door 11 is opened, and when the tray is pulled out of the image forming device along the X2 direction, the processing box 100 is disengaged from the box pressing unit 191, and the reset elastic component 47 is elastically restored. The processing box 100 returns to the raised position under the action of the reset elastic component 47 (the processing box is raised, and the protrusion 152 does not interfere with the separation control component 196R), and the tray is smoothly pulled out of the image forming device, and the processing box can be replaced.

[0115] The rest is the same as that of the first embodiment and will not be described in detail here.

[0116] Embodiment 5

[0117] See also Figure 36 to Figure 38 In the processing box of this embodiment, a contact component 57 is provided on the non-driving side box cover component 117. Here, the contact component 57 is an elastic component. One end of the contact component 57 is engaged with the engaging portion 117a of the driving side box cover component 117, and the other end is suspended.

[0118] When the process cartridge 100 is mounted on the tray 171 , the other end of the abutting member 57 abuts against the fourth abutting portion 171 b 4 on the tray 171 , so that the process cartridge is lifted up (in the lifted position).

[0119] The abutment member 57 here may also be provided on the driving side cartridge cover member, preferably on the non-driving side, so that the abutment between the process cartridge and the tray is more stable.

[0120] The structure of this embodiment may be applicable to the above-mentioned embodiment, or may not be applicable to the above-mentioned embodiment.

[0121] When the structure of this embodiment is arranged together with the driving side structure in the above-mentioned embodiment, the protrusion can be arranged only on the driving side, only on the non-driving side, or on both the driving side and the non-driving side.

[0122] The rest is the same as other embodiments and will not be described in detail here.

[0123] In summary, in the above embodiments, the abutment component needs to be arranged on the same side as the protrusion, and both can be arranged only on the driving side, only on the non-driving side, or both on the driving side and the non-driving side. In addition, if the abutment component is arranged on both the driving side and the non-driving side, the protrusion can be arranged on any side, or on both sides. The structure of the abutment component can adopt at least one of the structures in the above embodiments, and can also adopt other structures, as long as it meets the implementation of this solution, which will not be described one by one here.

[0124] Furthermore, in the above embodiments, the elastic component is preferably a spring or a spring, and may also be a torsion spring, a sponge, rubber, a rubber band, a magnetic material, a self-deformable injection molded part, and the like.

[0125] At the same time, in order to ensure that the processing box in the above embodiment can be smoothly installed in the image forming device, the size of some structures of the processing box can be appropriately changed. For example, after the processing box is raised, in order to prevent the top of the processing box from interfering with the inside of the image forming device, a part of the upper part of the processing box can be cut off without affecting its use.

[0126] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A process cartridge detachably mounted in a tray of an image forming device, wherein the image forming device is provided with a separation control component and a cartridge pressing unit, wherein: include: a drum unit including a photosensitive drum; a developing unit including a developing roller, the developing unit being movable relative to the drum unit between a first position in which the developing roller contacts the photosensitive drum and a second position in which at least a portion of the developing roller is spaced apart from the photosensitive drum; a protrusion fixedly disposed on the developing unit and capable of receiving an action force of the separation control component to move the developing unit between a first position and a second position; The abutting member is provided on the drum unit and abuts against the tray, so that the process cartridge is in a raised position where the protruding portion does not interfere with the separation control member when the process cartridge is not subjected to the force of the cartridge pressing unit.

2. The process cartridge according to claim 1, wherein: The abutment component includes a moving protrusion and a reset elastic component, one end of the reset elastic component abuts against the drum unit, and the other end abuts against the moving protrusion. The moving protrusion abuts against the tray under the action of the reset elastic component, so that the processing box is in the raised position.

3. The process cartridge according to claim 2, wherein: The moving projection is rotatably provided on the drum unit, and a rotation axis of the moving projection extends in a width direction of the process cartridge.

4. The process cartridge according to claim 3, wherein: A support shaft is arranged on one of the drum unit and the moving protrusion, and an axis hole which is rotatably matched with the support shaft is arranged on the other one.

5. The process cartridge according to claim 2, wherein: The moving protrusion is slidably arranged on the drum unit.

6. The process cartridge according to claim 5, wherein: The movable protrusion is provided with a claw, and the drum unit is provided with a clamping portion that slidably cooperates with the claw. The movable protrusion can slide along the length direction or width direction of the processing box or in a direction intersecting the width direction and height direction of the processing box.

7. The process cartridge according to claim 6, wherein: The moving protrusion is provided with a contact portion for increasing the contact area between the moving protrusion and the tray, and the contact portion extends obliquely upward.

8. The process cartridge according to claim 5, wherein: The moving protrusion can slide along the height direction of the processing box.

9. The process cartridge according to claim 8, wherein: The movable protrusion is provided with a protrusion that abuts against the tray, and the protrusion extends downward along the height direction.

10. The process cartridge according to claim 8, wherein: The movable protrusion is provided with a groove, and the drum unit is provided with a convex rib which is slidably matched with the groove.

11. The process cartridge according to claim 8, wherein: The first end of the moving protrusion is engaged with the opening of the drum unit and can move in the opening along the height direction.

12. The process cartridge according to claim 8, wherein: The moving protrusion is provided with a contact portion, the contact portion has a lower abutting surface, and the drum unit is provided with an upper abutting surface. When the lower abutting surface abuts against the upper abutting surface, the downward movement of the moving protrusion stops.

13. The process cartridge according to any one of claims 3 to 12, characterized in that: When the cartridge pressing unit presses the process cartridge downward to move it downward, the moving protrusion abuts against the tray and is pushed to move and compress the resetting elastic component; When the box pressing unit stops pressing the processing box, the elastic restoring force of the reset elastic component pushes the moving protrusion to reset, and the moving protrusion abuts against the tray when moving, so that the processing box is lifted to the lifting position.

14. The process cartridge according to claim 1, wherein: The abutting component is an elastic component, one end of which is connected to the drum unit and the other end is suspended; When the process cartridge is mounted on the tray, the other end of the elastic member abuts against the tray, and the process cartridge is lifted to a lifted position under the elastic action of the elastic member.

15. The process cartridge according to any one of claims 1 to 12 and 14, characterized in that: The abutment member and the protrusion are provided on the same side in the longitudinal direction of the process cartridge.

Images