WO2016019693A1

WO2016019693A1 - Process cartridge

Info

Publication number: WO2016019693A1
Application number: PCT/CN2014/095586
Authority: WO
Inventors: 赵明升; 胡亮亮
Original assignee: 江西镭博钛电子科技有限公司
Priority date: 2014-08-05
Filing date: 2014-12-30
Publication date: 2016-02-11
Also published as: JP3213269U; CN105319933B; GB201701914D0; DE212014000227U1; CN105319933A; RU175899U1; GB2542547A; GB2542547B

Abstract

A process cartridge, comprising a cartridge body (10), a photosensitive drum drive assembly (20) and a control mechanism (30); the control mechanism (30) comprises a press lever (33) capable of being pressed by mounting rails (101, 102) of an imaging device, and further comprises a lifting piece (32) cooperating with the mounting rails (101, 102) to lift up the process cartridge and force the rails to press the press lever (33), and a force-bearing portion (12) driving, due to the pressing of a door, the process cartridge to rotate such that the mounting rails (101, 102) stop pressing the press lever (33). The extension and retraction of a power receiving portion (24) is triggered by the pressing of the door of the imaging device, and the trigger action is necessarily completed when a user is opening or closing the door during the use of the process cartridge, without requiring any additional operation of the user, thus according with user habits and ensuring precise control. The process cartridge does not create interference during the assembly and disassembly processes.

Description

Processing box

Technical field

The utility model relates to a process box.

Background technique

The process cartridge is a cartridge that can be detachably loaded into the main body of the image forming apparatus, and the cartridge as an integral unit includes an electrophotographic photosensitive member and at least processing such as a charger, a developer, a cleaner, and the like. One of the devices. Since the process cartridge is detachably mounted relative to the equipment host, maintenance of the equipment is facilitated. An electrophotographic image forming apparatus using an electrophotographic image forming apparatus operates by selectively exposing an electrophotographic photosensitive member uniformly charged by a light of an image forming apparatus to form an electrostatic latent image, which is used by a developing device The toner is developed into a toner image, and the formed toner image is transferred onto a recording medium by a transfer device to form an image on the recording material.

Generally, the photosensitive member of the process cartridge is provided with a power receiving device that meshes with the machine driving device in the image forming device to drive the photosensitive member to perform a rotary motion to drive the entire process cartridge to operate. However, the photosensitive member needs to be detachably mounted in the image forming apparatus with the process cartridge, so that when the process cartridge is taken out from the image forming apparatus, the power receiving device is disengaged from the machine driving device to ensure that the process cartridge is smoothly taken out from the image forming apparatus. When the process cartridge is mounted in the image forming apparatus for the print job, the power receiving device is required to be engaged with the machine drive device to ensure that the photosensitive member smoothly receives the driving force.

Many manufacturers in the prior art use a retractable power receiving device, and a control mechanism for controlling the telescopic expansion of the power receiving device is disposed on one side of the processing box to realize the engagement between the power receiving device and the machine driving device when the processing box is in operation, and the power receiving device and the machine when disassembling. The driving device is disengaged, and a control mechanism is described in the patent CN201110394455.2 filed by the applicant. The control mechanism includes a pressing rod which is rotatable around a pivot point of the casing, and the pressing rod is subjected to image formation during installation and disassembly. Squeeze of the installation rail of the device, when the trigger is triggered The pressing lever controls the power receiving device to retract, so that the power receiving device and the machine driving device do not interfere during the mounting and dismounting process. However, when the process cartridge needs to be disassembled, an artificial lifting of the processing cartridge is required to cause the pressing lever to squeeze the image formation. The device is installed with a track to obtain a squeeze trigger. The action initiated by the person does not conform to the customer's usage habits. If the customer does not perform the action of manually lifting the process box, the process box cannot be easily disassembled, making the product difficult to promote in the market. Application, therefore, there is an urgent need to develop a process cartridge that is both easy to disassemble and meet customer habits.

Utility model content

The utility model provides a process box, which solves the problem in the prior art that when the process box needs to be disassembled, an artificial lifting process box is required to cause the pressing rod to press the image forming device mounting rail to obtain a squeeze trigger, and the artificially lifted action is not In accordance with the customer's usage habits, the action box is not artificially lifted, and the process box cannot be easily disassembled, thereby affecting the promotion of the product in the market.

In order to solve the above technical problems, the technical solution of the present invention is to provide a process cartridge.

The process cartridge includes a process cartridge case, a photosensitive drum drive assembly on the cartridge body, and a control mechanism for controlling expansion and contraction of the power receiving portion on the photosensitive drum drive assembly, the control mechanism including a rotation point around the cartridge body a pressing lever that is pressurizable by the image forming apparatus mounting rail, the control mechanism further comprising a mating with the mounting rail to lift the processing box to force the rail to press the pressing lever The top block and the rotation of the process cartridge by the pressing force of the door body causes the mounting rail to release the force receiving portion of the pressing rod, the top block is disposed on one side of the box body, and the force is applied The portion is disposed on the casing.

The box body is provided with a first limiting portion and a second limiting portion, and the control mechanism further includes a first elastic element, one end of the first elastic element abuts the second limiting portion, and one end abuts the a box body, wherein the top block is movable between a first limiting portion and a second limiting portion, and when the top block is in the first limiting portion, the mounting rail presses the pressing rod to be in a second limit In the case of the position, the door body presses the force receiving portion, and the mounting rail releases the pressing lever.

a rotating hole is disposed on the box body, a mounting protrusion is disposed on the top block, the mounting protrusion cooperates with the mounting hole, and the top block surrounds the mounting hole in the first limiting portion and the second limit Rotate between the positions.

The top block is provided with a guiding protrusion, and the box body is provided with an inverted sliding groove, and the guiding protrusion cooperates with the guiding slot.

The top block is provided with a fixing hole, and one end of the first elastic element is engaged with the fixing hole, and one end abuts the second limiting portion.

The box body is provided with a first elastic component mounting post, the first elastic component is a torsion spring, and the first elastic component is sleeved with the first elastic component mounting post.

The processing box is provided with a support column supporting the developing element, and the pressing rod is provided with a relief portion for avoiding the support column.

The top block is fixedly disposed on the box body, and the top block is provided with a resilient portion that is elastically deformable by force.

The elastic portion is composed of a rubber material.

The processing box of the utility model can jack up the processing box by providing the top block, so when the processing box is not in use, the pressing rod is always pressed by the upper mounting rail, the power receiving portion is retracted, no interference occurs, and when used, the processing is processed. The pressing portion of the box is pressed and engaged with the door body, the pressing force changes the jacking state of the process box, the pressing lever releases the pressing force of the mounting rail, and the power receiving portion protrudes to engage with the machine driving head, thereby adopting the present The expansion and contraction of the power receiving portion after the technical solution triggers the pressing from the image forming device door body, and the triggering action can be realized by the indispensable action of the customer to switch the machine door body when using the process box, without requiring the customer to perform another operation. In accordance with the customer's usage habits, and the control is accurate, the process box will not interfere during the installation and disassembly process.

DRAWINGS

1 is a schematic structural view of a process cartridge of the present invention;

Figure 2 is an exploded view of the process cartridge of the present invention;

Figure 3 is a partial enlarged view of A in Figure 2;

Figure 4 is an exploded view of the photosensitive drum drive assembly of the process cartridge of the present invention;

Figure 5 is a cross-sectional view of the second driving block B-B of Figure 4 in two different perspective views;

Figure 6 is a cross-sectional view showing different states of the photosensitive drum driving assembly of the process cartridge of the present invention;

7 is a schematic diagram of the state of the top block in the process of disassembling the process cartridge of the present invention;

Figure 8 is a schematic view showing the installation of the casing of the second embodiment of the process cartridge of the present invention.

In the figure, 10: box body; 11: second limit portion; 12: pressure receiving portion; 13: fulcrum column; 14: support column; 15: cover; 15': housing portion; 16: first elastic component mounting Column; 17: guide chute; 18: first limiting portion; 19: rotating hole; 10': mounting surface; 20: photosensitive drum driving assembly; 21: first driving block; 21a: pushed inclined surface; 21b: a mounting groove; 21c: first mounting hole; 22: second elastic member; 23: second driving block; 23a: second mounting hole; 23b: driving protrusion; 23c: first step surface; 23d: second step surface 23e: second mounting groove; 23f: initial surface; 23g: transfer surface; 23h: anti-shedding protrusion; 24: power receiving portion; 24a: first cylinder; 24b: second cylinder; 24c: power transmission portion; 24d: snap joint; 24e: power receiving port; 25: restricting portion; 26: hub; 26a: force projection; 26b: drum gear; 26c: drum gear inner surface; 26d: gear hole; 26e: outside the drum gear Surface; 30: control mechanism; 31: first elastic member; 32: top block; 32a: fixing hole; 32b: guiding protrusion; 32c: mounting protrusion; 33: pressing ; 33a: press portion; 33d: relief portion; 33c: pivot hole; 33e: forcible pushing ramp.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As shown in FIG. 1, the process cartridge of the embodiment of the present invention includes a casing 10, a photosensitive drum driving assembly 20 disposed on one side of the casing 10, and a photosensitive drum driving assembly 20 The control unit 30 that expands and contracts the force receiving portion 24, the photosensitive drum drive unit 20 is supported on the casing 10, and the control mechanism 30 is disposed on one side of the casing 10.

Referring to FIG. 1-3, the cartridge body 10 supports a photosensitive drum drive assembly 20, and a cover 15 is disposed on the same side of the photosensitive drum drive assembly 20. The cover 15 is provided with an inwardly recessed receiving cavity 15' and outward. The fulcrum column 13 and the support column 14 are protruded, and the accommodating portion 15' is used for mounting the top block 32 and the pressing lever 33, the fulcrum column 13 is provided as a rotation center around which the pressing lever 33 rotates, and the support column 14 is for supporting the developing member of the process cartridge For example, a magnetic roller and a developing roller.

Referring to FIG. 4, the photosensitive drum driving assembly 20 is supported on the casing 10, and is coupled to a photosensitive drum (not shown) for driving the photosensitive drum to rotate, including a power receiving portion 24, a driving portion 27, a second elastic member 22, and a hub 26. The power receiving portion 24 is assembled to the driving portion 27 and the second elastic member 22, and is attached to the cavity of the hub 26.

Referring to FIG. 4, the power receiving portion 24 includes a first cylinder 24a, a second cylinder 24b, and a power receiving port 24e. The first cylinder 24a and the second cylinder 24b have a circular cross section and different diameters, and the first cylinder 24a The diameter D1 is smaller than the diameter D2 of the second cylinder 24b, and the power receiving port 24e is connected to the second cylinder 24b, which meshes with the machine driving head 100 to receive the driving force to drive the entire process cartridge, and the second elastic member 22 is mounted to the first cylinder. Above the 24a, one end abuts against the first cylinder 24a and the second cylinder 24b with a sudden change in diameter 24f for providing a return elastic force F3 for the power receiving portion 24 to project in the axial Y direction of the hub 26 (see 6), the outer circumferential surface of the second cylinder 24b is formed with a power transmission portion 24c protruding in the radial direction thereof, and the power transmission portion 24c is provided with two at a pitch L, and the power transmission portion 24c is meshed with the driving portion 27. The driving force for receiving the machine is transmitted to the driving portion 27.

In this embodiment, the power receiving portion 24 is provided as a whole, and the three portions can be separately formed or split into more than three segments and assembled separately, or the two-in-one molding can be assembled with another single molded component. In the example, the first cylinder 24a and the second cylinder 24b have a circular cross section, and may also have a square shape, a "cross shape" or the like. In the embodiment, the power transmission portion 24c is radially protruded on the outer circumferential surface. It may also be provided to protrude on the end face of the first cylinder 24a toward the axial direction of the hub 26.

Referring to FIG. 4-5, the driving portion 27 includes a first driving block 21 and a second driving block 23, A driving block 21 is provided with a slanted surface 21a having a height difference in the axial direction Y of the hub 26, and the urging inclined surface 33e of the pressing lever 33 urges the slanted surface 21a so that the driving portion 27 is reversed along the hub 26. The first driving block 21 and the second driving block 23 are respectively provided with a first mounting hole 21c and a second mounting hole 23a. The diameter of the first mounting hole 21c is substantially the same as the power receiving portion 24 of the second column. The body 24b has the same diameter D2, the second mounting hole 23a has a diameter larger than the diameter D1 of the first cylinder 24a, and the power receiving portion 24 passes through the first mounting hole 21c and the second mounting hole 23a. The first mounting groove 21b through which the power transmitting portion 24c passes, the outer circumferential surface of the second driving block 23 protrudes in the radial direction to form a driving protrusion 23b, and the driving protrusion 23b meshes with the hub 26 to transmit the driving force to the hub 26, thereby driving the processing box gear train to rotate, the inner surface of the mounting hole 23a of the second driving block 23 is formed with a first step surface 23c and a second step surface 23d, and the first step surface 23c and the second step surface 23d are axially along the hub 26. The pitch in the Y direction is L1, and the pitch L1 of the two step faces is approximately two The force transmission portion pitches L are equal, the initial surface 23f and the transmission surface 23g are formed by the intersection of the two stepped surfaces and the second drive block 23, and the second mounting groove 23e is provided in the axial direction Y near the initial surface 23f, and the power receiving portion 24 is mounted. First, it passes through the second mounting hole 23a, and the power transmitting portion 24c slides along the second mounting groove 23e near the initial surface 23f, and then the two power transmitting portions 24c rotate against the two step faces (shown by the arrow portion in Fig. 5) to transmit In the surface 23g, when the driving force is received, the power receiving portion 24 can transmit power to the driving portion 27 by the cooperation of the power transmission portion 24c and the transmission surface 23g, and the power transmission portion 24c can be engaged with the two step surfaces to force the driving portion 27 to be urged. The power transmission portion 24 is reversely retracted in the axial direction Y direction, and the power transmission portion 24 is driven by the second elastic member 22 to return the driving portion 27 in the axial direction Y, and the first step surface 23c is axially The direction Y is protruded and formed with the fall prevention protrusion 23h, and the fall prevention protrusion 23h can prevent the rotation of the power transmission part 24c from disengaging from the transmission surface 23g.

In this embodiment, the driving portion 27 includes a first driving block 21 and a second driving block 23, which may also be integrally formed. When the first driving block 21 and the second driving block 23 are integrally provided, the power receiving portion 24 is directly Engaged with the hub 26 to transmit power. Specifically, the transmission projection provided on the end surface of the power receiving portion 24 is axially protruded and meshes with the power receiving hole provided at the end surface of the hub 26. In this embodiment, the two step faces are respectively Power transmission The portion 24c is engaged, and it is also possible to provide only the second step surface 23d to mesh with the power transmission portion 24c.

The stepped surface formed on the inner surface of the driving portion 27 in the present embodiment is engaged with the power transmitting portion 24c, and may be disposed to be formed on the end surface of the driving portion 27 to be engaged with the power transmitting portion formed on the end surface of the first cylinder. The transmission hole 23 is a protrusion provided on the outer circumferential surface of the driving portion, and may be provided as a driving protrusion formed on the end surface of the driving portion.

Referring to Fig. 4, the hub 26 includes a drum gear 26b and a force receiving projection 26a on which the inner surface of the hub 26 is disposed, and the force receiving projection 26a engages with the driving projection 23b of the driving portion 27 to cause the driving portion 27 to drive the hub 26 to rotate.

In the present embodiment, the force receiving projection 26a is provided on the inner surface of the hub 26, and may be provided as a force receiving protrusion or a power receiving hole formed on the end surface of the hub 26 so as to be engaged with the driving projection formed on the end surface of the driving portion.

Referring to FIG. 4, after the photosensitive drum driving assembly 20 is assembled (see FIG. 6), the power receiving portion 24 passes through the driving portion 27 and the gear hole 26d of the hub 26, and the second elastic member 22 surrounds the first cylinder 24a. One end abuts the diameter abrupt portion 24f, and the other end is connected to the inner surface 26c of the drum gear 36. The first cylinder 24a is provided with a catching portion 24d, and the restricting portion 25 is disposed outside the outer surface 26e of the hub 26, the restricting portion 25 cooperates with the snap portion 24d to limit the maximum travel of the power receiving portion 24 outwardly relative to the hub 26.

In this embodiment, the latching portion 24d of the first cylinder 24a is a card slot, and the limiting portion 25 is a latching spring 25 with the latching slot. The latching portion 24d can be configured as a latching hole, and the limiting portion 25 A bayonet for mating with the card hole.

In this embodiment, the second elastic member 22 surrounds the outer circumferential surface of the first cylinder 24, and the first cylinder 24 may be disposed with a receiving hole for accommodating the second elastic member 22, and the second elastic member 22 is mounted. In the receiving hole of the first cylinder 24.

Referring to FIG. 3, the control mechanism 30 is mounted to one side of the casing 10, and includes a first elastic member 31, a top block 32 and a pressing lever 33. The top block 32 is received in the receiving portion 15' of the casing 10, and is provided thereon. Mounting projection 32c, mounting projection 32c and rotating hole provided on cover 15 19, the top block 32 is rotatable relative to the casing 10 between the first limiting portion 18 and the second limiting portion 11 about the rotating hole 19, and the top block 32 is further provided with a guiding protrusion 32b, the guiding protrusion 32b The first elastic member 31 is sleeved on the first elastic component mounting post 16 disposed on the casing 10, and the sliding groove 17 is disposed on the casing 10. It has a first end 31a and a second end 31b, the first end 31a abuts the second limiting portion 11, and the second end 31b is mounted in the fixing hole 32a of the top block 32, and the elastic force of the first elastic member in the initial position The top block 32 is in the first limiting portion 18, which has a portion beyond the casing mounting surface 10', see FIGS. 7 to 8. Therefore, the top block 32 contacts the lower mounting rail to apply a pre-clamping force F to the top of the box. When the top block 32 is pressed by the door body to the second limiting portion 11, the top block 32 does not extend beyond the mounting surface 10' of the casing, and the mounting surface 10' fits with the lower mounting rail (see FIG. 7), pressing The rod 33 is provided with a fulcrum hole 33c that cooperates with the fulcrum column 13 on the casing 10. The pressing rod 33 is rotatable around the fulcrum column 33, and the lever 33 is pressed to the fulcrum. The hole 33c is a boundary, and one end is provided with a pressing portion 33a that engages with the machine rail at the time of installation, and the other end is provided with a pushing inclined surface 33e that engages with the pushing portion 21a of the driving portion 27, and a relief portion 33d that avoids the support column 14, and the pressing portion When the 33a is engaged with the machine track, the pressing of the machine rail can rotate the pressing lever 33 around the fulcrum column 13. After the pressing lever 33 is mounted, the pressing inclined surface 33e has a height difference with respect to the axial direction Y, and is applied when the inclined inclined surface 33e is rotated. The forced thrust F2 (see FIG. 6) to the pushed inclined surface 21a urges the driving portion 27 to be inwardly retracted in the Y direction, thereby causing the power receiving portion 24 to be inwardly retracted in the Y direction, and the cover 15 is also provided with pressure. In the portion 12, the pressure receiving portion 12 can receive the pressing of the image forming apparatus door so that the casing 10 can rotate about the axis of the hub 26.

In the embodiment, the fulcrum hole 33c is disposed on the pressing rod 33, the fulcrum column 13 is disposed on the casing 10, and the pressing rod 33 is rotated around the fulcrum column 13. The urging rod 33 may be disposed on the pressing rod 33, and the box body 10 is disposed. The fulcrum hole, the pressing lever 33 rotates around the fulcrum hole. In this embodiment, the mounting protrusion 32c is disposed on the top block 32, and the rotating hole 19 matched thereto is disposed on the cover 15, and may also be disposed as a mounting hole 32c disposed on the cover 15, and the rotating hole matched with the same 19 is disposed on the top block 32.

In this embodiment, the first elastic member 31 is a torsion spring, and the second elastic member 22 is pressed. The shrink spring can also be other elastic members such as elastic rubber and elastic steel sheets.

In the present embodiment, the pressure receiving portion 12 is disposed on the cover 15, which may also be disposed separately from the cover 15 or disposed on the process cartridge.

In the present embodiment, the top block 32 is provided with a pre-clamping force F of the first elastic member 31 to lift up the process cartridge case, and the pressure receiving portion 12 is pressed by the machine door body to overcome the pre-clamping force F to rotate the casing. In another embodiment of the present invention (see FIG. 8), the top block 32' has an elastic portion 32'a composed of an elastic rubber material that is fixedly disposed on the process cartridge, and the 32'a has an outer casing installation. The portion of the surface 10', in the initial state, 32'a jacks up the process cartridge. When the door body is closed, the 32'a is elastically deformed by the door body pressing, the casing is rotated, and the mounting surface 10' and the lower mounting rail 102 are mounted. fit.

The disassembly process of the process cartridge according to the first embodiment of the present invention will be described below with reference to FIGS. 6-7. The disassembly process of the process cartridge in the second embodiment is similar to that of the first embodiment. The elastic force of the elastic member pushes up the process box, and the pressing force of the door body overcomes the pre-tensioning force to rotate the box body relative to the top block. In the second embodiment, the top block is lifted by the elastic force of the material of the material to lift the process box, the door body The pressing force causes the top block to deform.

When the process cartridge is not mounted, the power receiving portion 24 is in an extended state by the second elastic member restoring force F3.

When the process cartridge is mounted to the image forming apparatus, the pressing portion 33a of the pressing lever 33 comes into contact with the upper mounting rail 101, and the top block 32 is in the first limiting portion 18 and contacts the lower mounting rail 102, and is applied by the first elastic member 31. Pre-pushing force F to the process cartridge, jacking up the process cartridge to be rotatable relative to the lower mounting rail 102, as the process cartridge slides along the mounting rail into the drop position 103, the upper mounting rail 101 pushes the push lever 33, pressing the lever 33 is rotated about the fulcrum column 13, and when rotated, the urging slope 33e of the pressing lever 33 applies the urging force F2 to urge the pushed inclined surface 21a of the driving portion 27, so that the driving portion 27 drives the power receiving portion 24 to retract when the process cartridge is processed. When mounted to the landing position 103, the pre-clamping force F applied to the process cartridge by the top block 32 by the first elastic member 31 causes the process cartridge to have a tendency for the process cartridge to rotate clockwise, thereby causing the pressing lever 33 to push the mounting rail 101 upward. At this time, the pressing lever 33 is always in the pressing state, and the power receiving portion 24 is in the contracted state, and when the client closes the door body of the image forming apparatus, the door body Applying the pressing force F1 to the pressure receiving portion 12 of the process cartridge, the process cartridge is rotated counterclockwise with respect to the top block 32 against the pre-tensioning force F of the first elastic member 31, and the top block 32 is rotated relative to the process cartridge to the second limit. The portion 11 is such that the pressing lever 33 of the process cartridge releases the upper mounting rail 101, and the pressing lever 33 is not pushed by the upper mounting rail 101, and the power receiving portion 24 is acted upon by the restoring force F3 of the second elastic member 22. The power receiving port 24e extends axially to engage the machine drive head 100, thereby driving the process cartridge to operate normally.

When the process cartridge needs to be detached from the image forming apparatus, the door body of the image forming apparatus is opened, and the door body stops applying the pressing force F1 to the pressure receiving portion 12, and at this time, the preloading force F of the first elastic member 31 acts. Next, the process cartridge is rotated clockwise by the top block 32, and the process cartridge drives the pressing lever 33 to press the upper mounting rail 101, so that the pressing lever 33 rotates counterclockwise with respect to the upper mounting rail 101. At this time, the pressing of the pressing lever 33 is performed. The inclined surface 33e applies the urging force F2 to urge the pushed inclined surface 21a of the driving portion 27, and the urging force F2 overcomes the restoring force F3 of the second elastic member, thereby driving the power receiving portion 24 to be inwardly retracted in the axial Y direction by the driving portion 27. At this time, the power receiving portion 24 is in the retracted state, and the power receiving port 24e on the power receiving portion 24 is disengaged from the machine driving head 100, and the process cartridge can be taken out without interference.

Since the photosensitive drum driving unit 20 of the present invention is provided separately from the power receiving portion 24, when the pressing lever 33 is pushed, the rotation of the power receiving portion 24 is not affected by the pushing action, and the driving is effectively avoided. The portion is integrally provided with the power receiving portion, and when the power receiving portion 24 rotates, the pressing lever and the driving portion are pushed, and friction with the rotating power receiving portion affects power transmission.

The processing box of the utility model can jack up the processing box by providing the top block and the first elastic element. Therefore, when the processing box is not in use, the pressing rod is always pressed by the upper mounting rail, and the power receiving portion is retracted without interference. In use, the pressing force changes the jacking state of the process cartridge through the pressing engagement of the pressure receiving portion on the process cartridge with the door body, the pressing lever releases the pressing force with the mounting rail, and the power receiving portion 24 extends, thereby the machine The driving head is engaged, and the expansion and contraction of the power receiving portion 24 after the technical solution triggers the pressing from the image forming device door body, and the triggering action can be realized by the indispensable action of the customer to switch the machine door when using the processing box. No need for the customer to operate separately, in accordance with the customer's usage habits, and the control Precise, the process cartridge does not interfere during installation and removal.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the description The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced, and the modifications or replacements do not deviate from the technical solutions of the embodiments of the present invention. The spirit and scope of the programme.

Claims

A process cartridge detachably mounted in an image forming apparatus having a door body, comprising a process cartridge case, a photosensitive drum drive assembly on the cartridge body, and a control mechanism for controlling expansion and contraction of the power receiving portion on the photosensitive drum drive assembly The control mechanism includes a pressing lever rotatable about a point on the casing, the pressing lever being pressable by the image forming device mounting rail, wherein the control mechanism further includes an installation a track fit can lift the process cartridge to force the rail to press the top block of the pressing lever and to rotate the process cartridge by the door body pressing force to cause the mounting rail to release the force of pressing the pressing lever The top block is disposed on one side of the casing, and the force receiving portion is disposed on the casing.
The process cartridge according to claim 1, wherein the casing is provided with a first limiting portion and a second limiting portion, and the control mechanism further comprises a first elastic member, the first elastic member One end abuts the second limiting portion, one end abuts the top block, and the top block is switchable between a first position where the door body is opened and closed and a second position where the door body is closed, the top When the block is in the first position, the mounting rail presses the pressing lever, and when in the second position, the door body presses the force receiving portion, and the mounting rail releases the pressing lever.
A process cartridge according to claim 2, wherein said casing is provided with a rotary hole, said top block is provided with a mounting protrusion, said mounting projection is engaged with said mounting hole, said top block is wound The mounting hole rotates between the first limiting portion and the second limiting portion.
A process cartridge according to Claim 3, wherein said top block is provided with a guide projection, and said casing is provided with a reverse chute, said guide projection being engaged with said guide chute.
The process cartridge according to claim 2, wherein the top block is provided with a fixing hole, and one end of the first elastic member is engaged with the fixing hole, and one end abuts the second limiting portion.
The process cartridge according to any one of claims 1 to 5, wherein the casing is provided with a first elastic member mounting post, the first elastic member is a torsion spring, and the first elastic The sexual component is sleeved on the first elastic component mounting post.
A process cartridge according to Claim 6, wherein said process cartridge is provided with a support post for supporting the developing member, and said press lever is provided with a relief portion for avoiding said support post.
The process cartridge according to claim 1, wherein said top block is fixedly disposed on said casing, and said top block is provided with a resiliently elastically deformable elastic portion.
A process cartridge according to claim 8, wherein said elastic portion is made of a rubber material.