CN219958079U

CN219958079U - Process cartridge

Info

Publication number: CN219958079U
Application number: CN202320701908.XU
Authority: CN
Inventors: 王先文; 苏罗发; 刘朝星; 程晨; 陈永迪; 徐婧熹; 向星火
Original assignee: Zhuhai Nastar Information Technology Co ltd
Current assignee: Zhuhai Nastar Information Technology Co ltd
Priority date: 2022-04-07
Filing date: 2023-03-31
Publication date: 2023-11-03
Anticipated expiration: 2033-03-31

Abstract

The present application relates to the field of electronic image forming apparatuses, and more particularly, to a process cartridge and an image forming apparatus provided with a photosensitive drum and a drum assembly. The box body is equipped with the developing roller, includes: a first position in which the developing roller is in contact with the photosensitive drum; and a second position in which the developing roller is separated from the photosensitive drum. The separating mechanism is rotatably connected to the box body and comprises a first abutting part and a second abutting part, the separating mechanism abuts against the drum assembly and rotates along with the separating mechanism, and when the abutting position of the drum assembly is from the first abutting part to the second abutting part, the box body is kept at the second position. The processing box has a simple structure of the separating mechanism, and the instant acting force transmitted by the image forming device and used for separating the developing roller from the photosensitive drum can be buffered into the sliding force of the drum component and the separating mechanism through the separating mechanism, so that the problem that the instant acting force transmitted by the image forming device damages the separating mechanism or causes the loss of the separating mechanism in the long-term use process is solved, the service life of the separating mechanism is prolonged, and the printing quality is ensured.

Description

Process cartridge

[ field of technology ]

The present application relates to the field of electronic image forming apparatuses, and more particularly, to a process cartridge.

[ background Art ]

An electrophotographic image forming apparatus includes a process cartridge for developing an electrostatic latent image on a photosensitive drum with toner. The process cartridge has a developing roller rotatably supported in a casing thereof, and development is performed by supplying toner accommodated in the casing from the developing roller to the photosensitive drum. Further, if the toner inside the process cartridge is entirely consumed, the process cartridge needs to be replaced again.

The process cartridge is a detachable portion widely used in image forming apparatuses. The process cartridge has a developing roller, and the image forming apparatus is capable of switching between a state in which the developing roller and the photosensitive drum are in contact with each other and a state in which the developing roller and the photosensitive drum are separated from each other. In the related art, a member for moving the process cartridge to separate the developing roller from the photosensitive drum is provided at both ends of the drawer unit or the drum assembly, and both members for moving the process cartridge are required to receive driving force from the main body of the image forming apparatus.

However, such a structure is liable to cause damage to the separation mechanism on the process cartridge and interference at the time of mounting, thereby affecting contact and separation between the photosensitive drum and the developing roller, and is disadvantageous in optimizing the structure and process of the process cartridge due to the small design space of the process cartridge.

[ utility model ]

In view of this, the present utility model provides a process cartridge that buffers the instantaneous force applied by the image forming apparatus by the cooperation of the separation mechanism and the drum assembly, preventing the separation mechanism from being damaged, and further ensuring that the contact and separation of the developing roller and the photosensitive drum are performed normally.

In a first aspect, the present utility model provides a process cartridge detachably mountable to an image forming apparatus provided with a photosensitive drum and a drum assembly; the process cartridge includes:

the developing device comprises a box body, a photosensitive drum and a developing roller, wherein the box body is provided with the developing roller and can move between a first position and a second position, and the developing roller is abutted with the photosensitive drum at the first position; at the second position, the developing roller is separated from the photosensitive drum;

the separation mechanism is rotatably connected to the box body; the separation mechanism includes a first abutting portion and a second abutting portion, and when the cartridge receives the urging force of the image forming apparatus, the separation mechanism moves to abut against the drum assembly, and as the separation mechanism rotates, the abutting position of the separation mechanism and the drum assembly slides from the first abutting portion to the second abutting portion, the cartridge moves from the first position to the second position and is held at the second position.

With reference to the first aspect, the separation mechanism includes a moving member and a separating member, and the first abutting portion and the second abutting portion are disposed on the separating member; the moving member can receive the acting force of the image forming device and drive the separating member to rotate in an XY plane or an XZ plane, so that the abutting position of the separating member and the drum assembly slides from the first abutting part to the second abutting part.

With reference to the first aspect, the separation mechanism includes:

the first moving piece is movably arranged on the box body and can receive the acting force of the image forming device; the first moving part is provided with a rack; and

The first separating piece is rotatably arranged on the box body; the radial wall surface of the first separating piece is provided with a lug which is provided with an inclined plane, and the first abutting part and the second abutting part are respectively arranged at two ends of the inclined plane; the circumferential side wall of the first separating piece is provided with a tooth group, and the tooth group comprises a plurality of gear teeth uniformly distributed along the circumferential side wall of the first separating piece;

the acting force of the image forming device drives the first moving part to move, and the first moving part drives the first separating part to rotate through the meshing of the tooth group and the rack so as to enable the inclined surface to be abutted with the drum assembly; and as the first separating member rotates, the abutment position of the inclined surface and the drum assembly slides from the first abutment portion to the second abutment portion, and the photosensitive drum is separated from the developing roller.

In combination with the first aspect, a clearance space is further provided on the circumferential side wall of the first separating member, and the clearance space is formed in the tooth group.

In combination with the first aspect, the box body is provided with a chute extending along the length direction, the first moving member is provided with a sliding protrusion, and the sliding protrusion is slidably connected with the chute.

In combination with the first aspect, the box body is provided with a rotating shaft, the first separating piece is provided with a rotating through hole, and the rotating shaft is rotationally connected with the rotating through hole.

With reference to the first aspect, the separation mechanism includes:

the second moving piece is movably arranged on the box body and can receive the acting force of the image forming device;

the second separating piece is rotatably arranged on the box body and is provided with a first arc-shaped abutting surface, and the first abutting part and the second abutting part are arranged on the first arc-shaped abutting surface; and

One end of the transmission piece is in transmission connection with the second moving piece, and the other end of the transmission piece is connected with the second separating piece;

the acting force of the image forming device drives the second moving part to move, and the second moving part drives the second separating part to rotate through the transmission part so as to enable the first arc-shaped abutting surface to abut against the drum assembly; and along with the rotation of the second separating piece, the abutting position of the first arc-shaped abutting surface and the drum assembly slides from the first abutting part to the second abutting part, and the photosensitive drum is separated from the developing roller.

In combination with the first aspect, an installation groove is formed in the box body, a first rotating shaft is arranged in the installation groove, and the second separating piece is rotationally connected in the installation groove through the first rotating shaft.

With reference to the first aspect, the transmission member includes a first connection portion, a connection rod, and a second connection portion that are sequentially connected;

the second separating piece is provided with a second rotating shaft, the second moving piece is provided with a third rotating shaft, the first connecting portion is connected with the second rotating shaft, and the second connecting portion is connected with the third rotating shaft.

With reference to the first aspect, the separation mechanism includes:

a third moving member movably disposed in the case, the third moving member being capable of receiving a force of the image forming apparatus;

the third separating piece is rotatably arranged on the box body and is provided with a second arc-shaped abutting surface, and the first abutting part and the second abutting part are arranged on the second arc-shaped abutting surface; and

The limiting piece is arranged at the end part of the third moving piece and is supported or clamped at one side or two sides of the third separating piece;

the acting force of the image forming device drives the third moving part to move, and the limiting part pushes the third separating part to swing so as to enable the second arc-shaped abutting surface to abut against the drum assembly; and as the third separator swings, the abutment position of the second arc-shaped abutment surface and the drum assembly slides from the abutment portion to the second abutment portion, and the photosensitive drum is separated from the developing roller.

With reference to the first aspect, the box body is provided with a positioning boss, and the connection end of the third separating piece is rotationally connected with the positioning boss.

With reference to the first aspect, the separation mechanism includes:

the fourth separating piece protrudes out of the box body at least partially, and can rotate around an axis, so that the fourth separating piece can rotate relative to the box body; the part of the fourth separating piece protruding out of the box body is provided with an arc-shaped structure, and the first abutting part and the second abutting part are arranged on the arc-shaped structure;

the acting force of the image forming device drives the box body to move so as to enable the arc-shaped structure to be abutted with the drum assembly; the box body continues to move, and the fourth separating piece rotates, the arc-shaped structure and the abutting position of the drum assembly slide from the first abutting part to the second abutting part, and the photosensitive drum is separated from the developing roller.

With reference to the first aspect, the separation mechanism further includes a fourth moving member detachably mounted on the box body; and the two ends of the fourth moving part are provided with frames, the fourth separating part is arranged in the frames, and at least part of the fourth separating part protrudes out of the frames.

In combination with the first aspect, the separation mechanism further includes an elastic member, and the separation mechanism is capable of being reset after being driven by the acting force of the image forming apparatus.

After the scheme is adopted, the beneficial effects are as follows:

the processing box provided by the application is used for enabling the separation or abutting separation mechanism of the developing roller and the photosensitive drum to have a simple structure, and the instantaneous acting force transmitted by the image forming device for separating the developing roller and the photosensitive drum can be buffered into the sliding force between the drum assembly and the separation mechanism through the separation mechanism, so that the problem that the instantaneous acting force transmitted by the image forming device damages the separation mechanism or causes the loss of the separation mechanism in the long-term use process can be effectively solved, the service life of the separation mechanism is prolonged, and the printing quality of the image forming device is further ensured.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view showing a structure in which a photosensitive drum is contacted with a developing roller in embodiment 1 of the present application;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged view at B in FIG. 1;

fig. 4 is a schematic view showing the structure of a photosensitive drum in contact with a developing roller at another view angle in embodiment 1 of the present application;

FIG. 5 is an enlarged view at C in FIG. 4;

FIG. 6 is a schematic diagram showing the connection relationship between the separating member and the protruding device in embodiment 1 of the present application;

fig. 7 is a schematic view showing a structure in which a photosensitive drum is separated from a developing roller in embodiment 1 of the present application;

FIG. 8 is an enlarged view of FIG. 7 at D;

FIG. 9 is a schematic view showing the structure of the photosensitive drum and the developing roller according to the embodiment 1 of the present application at one view;

fig. 10 is an enlarged view at E in fig. 9;

FIG. 11 is a schematic view showing the structure of the photosensitive drum and the developing roller in embodiment 2 of the present application

Fig. 12 is an enlarged view of F in fig. 11;

fig. 13 is a top view of the photosensitive drum of embodiment 2 of the present application separated from the developing roller;

FIG. 14 is a schematic view of the mechanism in semi-section of the plane A-A of FIG. 13;

fig. 15 is an enlarged view at G in fig. 14;

fig. 16 is a schematic view of the structure of the photosensitive drum in contact with the developing roller in embodiment 2 of the present application;

fig. 17 is a plan view of the photosensitive drum in contact with the developing roller in embodiment 2 of the present application;

FIG. 18 is a schematic view of the mechanism in half section of the B-B plane of FIG. 17;

fig. 19 is an enlarged view of H in fig. 18;

FIG. 20 is a schematic diagram of a driving member according to embodiment 4 of the present application;

FIG. 21 is an overall view of the processing cartridge of embodiment 4 of the present application;

FIG. 22 is an overall view of the cartridge of embodiment 4 of the present application at another angle;

fig. 23 is a cross-sectional view of the process cartridge in embodiment 4 of the present application;

FIG. 24 is a side view of the process cartridge in embodiment 4 of the present application;

FIG. 25 is an enlarged schematic view of the portion I of FIG. 21;

FIG. 26 is an enlarged schematic view of the portion J of FIG. 22;

FIG. 27 is a schematic view showing the structure of a separation member of a process cartridge in embodiment 4 of the present application;

fig. 28 is a schematic view showing the operation of the separation assembly when the developing roller of the process cartridge of embodiment 4 of the present application is in contact with the photosensitive drum;

fig. 29 is a schematic view showing the operation of the separation assembly in the case where the developing roller and the photosensitive drum of the process cartridge in embodiment 4 of the present application are separated;

fig. 30 is a perspective view of a process cartridge in embodiment 5 of the present application;

FIG. 31 is an enlarged schematic view of the structure of the K position in FIG. 30;

FIG. 32 is a perspective view of the clutch member of embodiment 5 of the present application;

FIG. 33 is a perspective view of the process cartridge in embodiment 6 of the present application;

FIG. 34 is an enlarged schematic view of the L position of FIG. 33;

FIG. 35 is a perspective view of the clutch unit of example 6 of the present application with the movable member removed;

FIG. 36 is an enlarged schematic view of the M position of FIG. 35;

FIG. 37 is a perspective view of a movable member in embodiment 6 of the present application;

FIG. 38 is a perspective view of the embodiment 6 of the application with the clutch unit removed;

FIG. 39 is an enlarged schematic view of the N position in FIG. 38;

FIG. 40 is a view showing the operation of the clutch unit and the guide unit when the developing roller on the process cartridge is separated from the photosensitive drum on the image forming apparatus in example 6 of the present application;

fig. 41 is a perspective view of the process cartridge of embodiment 6 of the present application mated with the separating portion when mounted in the image forming apparatus;

FIG. 42 is an enlarged schematic view of the O-position of FIG. 41;

FIG. 43 is a second perspective view showing the process cartridge of embodiment 6 of the present application mated with the separating portion when mounted in the image forming apparatus;

FIG. 44 is a perspective view of a process cartridge in embodiment 7 of the present application;

FIG. 45 is an enlarged schematic view of the structure of the P position in FIG. 44;

fig. 46 is a perspective view of the process cartridge of embodiment 7 of the present application with the clutch unit removed;

FIG. 47 is a perspective view of a movable member in embodiment 7 of the present application;

FIG. 48 is a view showing the operation of the clutch unit and the guide unit when the developing roller on the process cartridge is separated from the photosensitive drum on the image forming apparatus in example 7 of the present application;

Fig. 49 is a perspective view of the process cartridge of embodiment 7 of the present application mated with the separating portion when mounted in the image forming apparatus;

fig. 50 is a perspective view showing the process cartridge of embodiment 7 of the present application mated with the separating portion when mounted in the image forming apparatus.

The attached drawings are identified:

11-a photosensitive drum; 12-action part; 121-an abutment; 13-a force application member;

2-a box body; 210-stirring rack; 211-a developing roller; 212-a chute; 213-spindle; 214-mounting grooves; 2141-a first shaft; 215-a first sidewall; 216-a second sidewall; 217-lid; 218-a powder adding port; 219-a powder feeding roller; 21 a-a powder outlet knife; 21 b-positioning boss; 21 c-a first side; 21 d-a second side; 21 e-outlet; 21 f-a first groove; 21 g-a first positioning portion; 21 h-protecting cover; 21 i-a transmission; 21 j-a guide unit; 21 k-a first restriction; 21 p-a second restriction; 21 q-a first rail; 21r second guide rail; 21 x-a third restriction; 21 t-bump;

22-a separation mechanism;

220-a first abutment;

221-a second abutment;

222-a first mover; 2221-sliding projection; 2222-rack;

223-first separator; 2231-bump; 2231 a-bevel; 2231 b-sloped bottom; 2231 c-sloping top; 2232-a rotational through hole; 2233-set of teeth; 2234-avoidance space;

224-a second mover; 2241-a third rotating shaft;

225-a second separator; 2251—a first arcuate abutment surface; 2252—a second shaft;

22 a-a transmission member; 22 b-a first connection; 22 c-connecting rods; 22 d-a second connection;

226-a third mover; 2261-a stop; 2261 a-a limit post;

227-a third separator; 2271-a second arcuate abutment surface;

228-fourth separator; 2281-first positioning posts; 2282-a frame; 2282 a-a receptacle; 2282 b-second positioning part; 2283-a movable member; 2283 a-second positioning posts;

229-fourth mover;

23-an elastic member;

25-force-receiving part;

26-a drive assembly;

261-power receiving member; 262-developing roller gear; 263-powder feeding roller gear; 264-stirring rack gear;

27-a detection assembly.

[ detailed description ] of the application

For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The electrophotographic method is to develop an electrostatic latent image on a photosensitive drum 11 by using a process cartridge, and specifically, the process cartridge is detachably mounted to an image forming apparatus having the photosensitive drum 11 and a drum assembly provided with an action portion 12 for abutting against the process cartridge; in the present application, the number of process cartridges that can be mounted in the image forming apparatus is four, but not limited thereto, the number of process cartridges is a plurality; each process cartridge correspondingly contains a different color (e.g., cyan, magenta, yellow, and black) developer material (e.g., toner). The image forming apparatus forms an image by applying a developer material supplied from a process cartridge to a surface of a printing paper.

The present application is to better explain a process cartridge by referring to the concept of X-axis, Y-axis, and Z-axis, and by taking three mutually orthogonal spatial axes as the X-axis, the Y-axis, and the Z-axis, specifically, defining the direction of application of force by the force application member 13 of the image forming apparatus as the +x-axis, and the direction of the developing roller 211 of the cartridge 2 toward the photosensitive drum 11 as the +y-axis. The movement in the front-rear or up-down direction or the movement in the X-axis, Y-axis, Z-axis direction in the embodiment is not limited to the movement in the vertical, horizontal, or parallel directions, and the movement having an inclination angle may be any movement having a component in the direction.

Referring to fig. 1 to 50, the process cartridge includes a cartridge body 2, a stirring frame 210, a developing roller 211, a driving head, and a toner discharging blade 21a, the cartridge body 2 having a toner hopper capable of accommodating a developer material, the developing roller 211 being a roller body rotatable about an X direction. The powder discharging blade 21a is mounted on the cartridge body 2, and a longitudinal direction of the powder discharging blade 21a extends in a first direction, and a part of the powder discharging blade 21a is in elastic contact with the developing roller 211 for adjusting a layer thickness of the developer on the developing roller 211.

The case 2 has a first side wall 215 and a second side wall 216 disposed opposite to each other in the X-axis direction, wherein the side wall of the driving end of the case 2 is the first side wall 215, and the front end side of the case 2 in the Y-axis direction is the cap 217. The cartridge body 2 may further be provided with a powder adding port 218, and the developer is replenished into the accommodating cavity through the powder adding port 218, and the powder adding port 218 may be formed on the second side wall 216. The developing roller 211, the powder feeding roller 219 and the stirring frame 210 are rotatably supported at two ends of the box body 2 in the X-axis direction, namely, between the first side wall 215 and the second side wall 216, and the developing roller 211, the powder feeding roller 219 and the stirring frame 210 can rotate under the action of the driving assembly 26, and the rotation axes of the developing roller 211, the powder feeding roller 219 and the stirring frame 210 are all along the length direction of the box body 2. The toner in the accommodating cavity is stirred by the stirring frame 210, so that the toner in the accommodating cavity is prevented from caking, and meanwhile, the toner can be conveyed towards the toner conveying roller 219, and the toner conveying roller 219 conveys the toner onto the developing roller 211 and is adsorbed by the charged developing roller 211.

The process cartridge further includes a driving assembly 26 and a detecting assembly 27 disposed on the first sidewall 215 (i.e. disposed on the driving end of the cartridge body 2), and the driving assembly 26 includes a power receiving member 261 and a gear set. The power receiving member 261 (main gear) is for receiving the driving force of the image forming apparatus and transmitting the driving force through a gear train, thereby driving the developing roller 211, the powder feeding roller 219, and the agitator 210 to rotate. The gear set includes a developing roller gear 262, a powder feeding roller gear 263, a stirring frame gear 264, and a driven gear, the developing roller gear 262 is fixed at one end of the shaft of the developing roller 211 in the first direction, and the developing roller gear 262 is engaged with the power receiving member 261, thereby enabling the developing roller 211 to rotate receiving the driving force. The feed roller gear 263 is fixed to one end of the feed roller 219 in the first direction, and the feed roller gear 263 is engaged with the power receiving member 261 so that the feed roller 219 can be rotated by receiving the driving force. A stirring frame gear 264 is fixed to one end of the stirring frame 210 in the first direction, and the stirring frame gear 264 is indirectly engaged with the power receiving member 261 via a driven gear, so that the stirring frame 210 can be rotated by receiving the driving force.

The detecting member 27 is provided on the first side wall 215 for the image forming apparatus to recognize the process cartridge, and the detecting member 27 is engaged with the toner feeding roller gear 263 to receive the driving force to operate, triggering the detecting member in the image forming apparatus, thereby realizing the detection and recognition of the process cartridge.

When the process cartridge receives a driving force, the developer material is supplied to the outer peripheral surface of the developing roller 211 from the hopper in the cartridge body 2 via the supply roller. At this time, the developer material is triboelectrically charged between the supply roller and the developing roller 211. Further, since a bias voltage is applied to the developing roller 211, the developer material is attracted to the outer peripheral surface of the developing roller 211 by an electrostatic force between the developing roller 211 and the developer material. The powder discharging blade forms the developer material supplied onto the outer peripheral surface of the developing roller 211 to a predetermined thickness. The developer material on the outer peripheral surface of the developing roller 211 is supplied onto the photosensitive drum 11 of the drum assembly. At this time, the developer material is moved from the developing roller 211 onto the photosensitive drum 11 in accordance with the electrostatic latent image formed on the outer peripheral surface of the photosensitive drum 11, in such a manner that visualization of the electrostatic latent image on the outer peripheral surface of the photosensitive drum 11 is achieved.

In the development process described above, the image forming apparatus can be switched between a state in which the developing roller 211 and the photosensitive drum 11 are in contact with each other and a state in which the developing roller 211 and the photosensitive drum 11 are separated from each other. However, in the related art, a member for moving the process cartridge to separate the developing roller 211 from the photosensitive drum 11 is provided at both ends of the drawer unit or the drum assembly, and both members for moving the process cartridge are required to receive driving force from the main body of the image forming apparatus. However, this structure is liable to cause damage to the separation mechanism 22 on the process cartridge and interference at the time of mounting, thereby affecting contact and separation between the photosensitive drum 11 and the developing roller 211, and is disadvantageous in optimizing the structure and process of the process cartridge due to the small design space of the process cartridge.

In view of this, the present application provides a process cartridge detachably mountable to an image forming apparatus provided with a photosensitive drum 11 and a drum assembly; the process cartridge includes:

a cartridge 2 provided with a developing roller 211, the cartridge 2 being movable between a first position at which the developing roller 211 abuts against the photosensitive drum 11 and a second position; at the second position, the developing roller 211 is separated from the photosensitive drum 11;

a separation mechanism 22 rotatably connected to the case 2; the separation mechanism 22 includes a first abutting portion 220 and a second abutting portion 221, and when the cartridge 2 receives the force of the image forming apparatus, the separation mechanism 22 moves to abut against the drum assembly 11, and as the separation mechanism 22 rotates, the abutting position of the separation mechanism 22 and the drum assembly 11 slides from the first abutting portion 220 to the second abutting portion 221, the cartridge 2 moves from the first position to the second position and is held at the second position.

In the above-mentioned scheme, the separation or abutting separation mechanism 22 for separating the developing roller 211 from the photosensitive drum 11 in the process cartridge 1 has a simple structure, and the instantaneous force for separating the developing roller 211 from the photosensitive drum 11 transmitted by the image forming apparatus can be buffered into the sliding force between the drum assembly and the separation mechanism 22 by the separation mechanism 22, so that the problem that the instantaneous force transmitted by the image forming apparatus damages the separation mechanism or causes the loss of the separation mechanism in the long-term use process can be effectively solved, the service life of the separation mechanism is prolonged, and the printing quality of the image forming apparatus is further ensured.

The following is set forth in connection with specific embodiments:

example 1

Referring to fig. 1 to 10, the separation mechanism 22 includes:

the first moving member 222 is movably disposed on the box 2, and the first moving member 222 can receive the acting force of the image forming device; the first moving member 222 is provided with a rack 2222; and

The first separating member 223 is rotatably provided to the case 2; the radial wall surface of the first separating member 223 is provided with a bump 2231, the bump 2231 has an inclined surface 2231a, and the first abutting portion 220 and the second abutting portion 221 are respectively arranged at two ends of the inclined surface 2231 a; and the circumferential side wall of the first separating member 223 is provided with a tooth set 2233, and the tooth set 2233 comprises a plurality of gear teeth uniformly distributed along the circumferential side wall of the first separating member 223;

the force of the image forming apparatus drives the first moving member 222 to move, and the first moving member 222 drives the first separating member 223 to rotate in the XZ plane through the engagement of the tooth set 2233 and the rack 2222, so that the inclined surface 2231a abuts against the drum assembly; and as the first separator 223 rotates in the XZ plane, the abutment position of the inclined surface 2231a with the drum assembly slides from the first abutment portion 220 to the second abutment portion 221, and the photosensitive drum 11 separates from the developing roller 211. Specific:

the first moving member 222 is movably disposed on the case 2, and is capable of receiving the urging force of the urging member 13 of the image forming apparatus. Specifically, the box 2 is provided with a chute 212 extending along the X axis, and the first moving member 222 is provided with a sliding protrusion 2221, where the sliding protrusion 2221 is slidably connected to the chute 212. Thus, the present embodiment provides a specific embodiment in which the first moving member 222 is slidably connected to the case 2. In this embodiment, the sliding groove 212 is arc-shaped, and the sliding protrusion 2221 is also arc-shaped, which can make sliding smoother.

The first separating member 223 is rotatably disposed on the box 2, and is in transmission connection with the first moving member 222, and a protruding block 2231 is disposed on an end surface in the +y axis direction. Specifically, the case 2 is provided with a rotation shaft 213, the first separating member 223 is provided with a rotation through hole 2232, and the rotation shaft 213 is rotatably connected with the rotation through hole 2232. Thus, the embodiment of embodiment 1 provides a specific embodiment of the rotatable arrangement of the first separating member 223 on the case 2, which is also characterized by a simple structure and easy assembly.

Regarding the driving connection between the first separating member 223 and the first moving member 222, in this embodiment, the first moving member 222 is provided with a rack 2222, the circumferential side wall of the first separating member 223 is provided with a tooth set 2233, and the tooth set 2233 is engaged with the rack 2222. The tooth set 2233 includes a plurality of teeth, which are uniformly distributed along the circumferential sidewall of the first separator 223, and which are engaged with the rack 2222.

Therefore, the scheme provides a specific transmission connection structure for converting the axial transmission force of the force application member 13 of the image forming device into the rotation driving force, which has the characteristics of stable transmission, simple structure and convenient production and manufacture; secondly, the present solution provides a specific structure of the tooth set 2233, which also has the characteristics of simple structure and convenient production and manufacture.

The first separator 223 is provided with a space 2234 on a circumferential side wall, the space 2234 being formed in the set of teeth 2233. Therefore, the conventional tooth set 2233 has a complete ring shape, and the avoidance space 2234 can effectively reduce the weight of the tooth set 2233, so as to further adapt to the characteristic of narrow space in the drum assembly and further improve the effect of simple structure.

The force application member 13 of the image forming apparatus drives the first moving member 222 to move along the X axis, the first moving member 222 drives the first separating member 223 to rotate in the XZ plane, and the protrusion 2231 can abut and apply a force along the Y axis to the drum assembly, so that the photosensitive drum 11 is separated from the developing roller 211.

As shown in fig. 3, the bump 2231 has a bevel 2231a; the inclined surface 2231a has an inclined bottom portion 2231b and an inclined top portion 2231c, and the inclined surface 2231a is inclined toward the inclined top portion 2231c along the inclined bottom portion 2231b, i.e., the width of the bump 2231 is gradually narrowed toward the inclined top portion 2231c along the inclined bottom portion 2231 b. At this time, the inclined bottom 2231b is the first contact portion 220, and the inclined top 2231c is the second contact portion 221.

As the first separating member 223 rotates in the XZ plane, the inclined surface 2231a collides with and applies a force in the Y axis direction to the drum assembly, and the abutment position of the boss 2231 with the acting portion 12 slides along the inclined surface 2231a from the first abutment portion 220 to the second abutment portion 221, at which time the photosensitive drum 11 is separated from the developing roller 211.

It should be noted that, because the spatial relative position between the process cartridge and the acting portion 12 of the drum assembly changes when the process cartridge is mounted in the image forming apparatus due to the difference in internal structure of the image forming apparatus, the position of the first abutment portion 220 of the inclined surface 2231a of the present application may refer to the position when the bump 2231 initially abuts against the acting portion 12, and the position when the bump 2231 finally abuts against the acting portion 12 when the developing roller and the photosensitive drum tend to separate from each other.

Therefore, the specific structure of the bump 2231 is provided, and the bump 2231 has the characteristics of simple mechanical structure, convenience in processing, production and manufacturing and small volume, and can be better adapted to an image forming device with smaller design space, so that the bump 2231 can be conveniently assembled on a processing box and replaced during later maintenance.

The end of the first moving member 222 is provided with a force receiving portion 25, and the force receiving portion 25 can be used for applying a force along the X-axis direction by the force applying member 13 of the image forming apparatus. Thus, the force receiving portion 25 can increase the force application area of the force application member 13, which can facilitate buffering of the instantaneous force applied by the force application member 13, and can also effectively avoid the possibility of damage to the force application member 13 by the end portion of the first moving member 222.

The separating mechanism 22 further includes an elastic member 23 sleeved on the outer sidewall of the first moving member 222, and two ends thereof respectively abut against the box 2 and the force receiving portion 25. Thus, the force receiving portion 25 can be used to receive the biasing force of the biasing member 13, and can also serve as a mounting limit for the elastic member 23, and the elastic member 23 can provide an elastic biasing force for restoring the first moving member 222.

In the present embodiment, the number of the action parts 12 of the image forming apparatus is plural, specifically two, but not limited thereto; accordingly, the number of the first separating members 223 is matched to two, and the positions of the first separating members 223 may be provided corresponding to the acting portion 12 of the drum assembly, specifically, the positions. Thus, when there are several active portions 12 on the drum assembly, the protrusions 2231 on the several first separating pieces 223 can correspondingly act on the active portions 12.

In the actual application process, when the process cartridge is in the normal printing state:

the urging member 13 of the image forming apparatus does not exert an urging force on the urging portion 25, the elastic member 23 is in a non-compressed state, and the projection 2231 of the projection 2231 is not in contact with the acting portion 12 of the drum assembly, and at this time, the photosensitive drum 11 is in contact with the developing roller 211;

a state in which the photosensitive drum 11 is separated from the developing roller 211:

When a process cartridge is mounted in the image forming apparatus, after a period of normal printing, the process cartridge of a certain color needs to be temporarily stopped from participating in printing, and the process cartridge can be separated from the photosensitive drum 11 by the urging force provided from the image forming apparatus. For example, when monochrome printing is performed in the image forming apparatus, process cartridges of colors other than black are operated separately. Note that the black process cartridge may also be operated separately. When one color is printed, the printer needs to replace the process cartridges with different colors, the force application member 13 of the image forming apparatus applies a force along the +x axis direction to the force receiving portion 25, and the force receiving portion 25 drives the first moving member 222 and the rack 2222 to move along the +x axis direction, so that the elastic member 23 has elastic potential energy after being compressed; through the meshing transmission of the rack 2222 and the tooth set 2233; the first separating member 223 drives the bump 2231 to rotate in the XZ plane, the inclined surface 2231a on the bump 2231 abuts against the acting portion 12 of the drum assembly, along with the rotation of the first separating member 223 in the XZ plane, the abutting position of the bump 2231 and the acting portion 12 slides along the inclined surface 2231a from the first abutting portion 220 to the second abutting portion 221, and finally the second abutting portion 221 abuts against the acting portion 12; under the interaction of the action portion 12 on the drum assembly and the projection 2231 on the cartridge body 2, the process cartridge and its components are rotated in a direction away from the photosensitive drum 11 (-Y-axis direction), so that the photosensitive drum 11 on the drum assembly is separated from the developing roller 211 on the cartridge body 2.

A state in which the photosensitive drum 11 is in contact with the developing roller 211:

when the force application member 13 of the image forming apparatus removes the force applied to the force receiving portion 25, the first moving member 222 and the rack 2222 move in the-X axis direction under the elastic action of the elastic member 23, and the meshing transmission between the rack 2222 and the tooth set 2233 is performed; the first separating member 223 drives the bump 2231 to reversely rotate in the XZ plane, firstly, the abutting position of the bump 2231 and the acting portion 12 slides along the inclined plane 2231a from the second abutting portion 221 to the first abutting portion 220, and then the bump 2231 is disconnected from the acting portion 12; the process cartridge and the components thereon are displaced in a direction approaching the photosensitive drum 11 (+y-axis direction) so that the photosensitive drum 11 on the drum assembly comes into contact again with the developing roller 211 on the cartridge body 2.

Example 2

Referring to fig. 11 to 20, unlike embodiment 1, the separation mechanism 22 of embodiment 2 includes:

a second moving member 224 movably disposed on the casing 2, the second moving member 224 being capable of receiving a force of the image forming apparatus;

the second separating piece 225 is rotatably disposed on the box 2, the second separating piece 225 has a first arc-shaped contact surface 2251, and the first contact portion 220 and the second contact portion 221 are disposed on the first arc-shaped contact surface 2251; and

One end of the transmission member 22a is in transmission connection with the second moving member 224, and the other end of the transmission member is connected with the second separating member 225;

the force of the image forming apparatus drives the second moving member 224 to move in the X-axis direction, and the second moving member 224 drives the second separating member 225 to rotate in the XY plane through the transmission member 22a so that the first arcuate abutment surface 2251 abuts against the drum assembly; and as the second separator 225 rotates in the XY plane, the abutment position of the first arcuate abutment surface 2251 with the drum assembly slides from the first abutment 220 to the second abutment 221, and the photosensitive drum 11 separates from the developing roller 211. Specific:

a second moving member 224 movably provided to the casing 2 and configured to receive a biasing force of the biasing member 13 of the image forming apparatus; specifically, a chute 212 extending along the X-axis direction is formed on the box 2, and the second moving member 224 is slidably connected to the chute 212, and this embodiment provides a specific implementation manner in which the second moving member 224 is slidably connected to the box 2, and a limiting block for limiting the second moving member 224 to be separated from the chute 212 is formed on the box 2. The number of the limiting blocks is a plurality of limiting blocks and the limiting blocks are uniformly distributed along the axial direction of the sliding groove 212.

The second moving member 224 has a force receiving portion 25 at an end thereof, and the force receiving portion 25 is configured to apply a force along the X-axis direction to the force applying member of the image forming apparatus. Thus, the force receiving portion 25 can increase the force application area of the force application member, which can facilitate buffering of the instantaneous force applied by the force application member, and can effectively avoid the possibility of damage to the force application member by the end portion of the second moving member 224. Preferably, the present embodiment further includes an elastic member 23 having one end connected to the case 2 and the other end connected to the second moving member 224, which can provide a restoring elastic force to the second moving member 224. Therefore, the force receiving portion 25 can be used to receive the urging force of the urging member, and can also serve as an installation limit of the elastic member 23, and the elastic member 23 can provide elastic urging force for the return of the second moving member 224.

A second separating member 225, which is rotatably disposed on the box 2 in the X plane, and has a first arc-shaped abutting surface 2251; the box body 2 is provided with a mounting groove 214, a first rotating shaft 2141 is arranged in the mounting groove 214, and the second separating piece 225 is rotatably connected to the first rotating shaft 2141, so that the second separating piece 225 is rotatably connected to the mounting groove 214. The mounting groove 214 can provide a rotation space for the second separating member 225, which is embedded in the box body 2, so as to reduce interference of the second separating member 225 to other structures in the rotation process. Thus, the present solution provides an embodiment of the rotational connection of the second separator 225 in the mounting recess 214. The second separating member 225 used in the present application has a flat elliptic structure, i.e. an elliptic arc cross section, and the first abutting portion 220 and the second abutting portion 221 are disposed on the first arc abutting surface 2251 of the elliptic structure.

It should be noted that, because the spatial relative position between the process cartridge and the acting portion 12 of the drum assembly changes when the process cartridge is mounted in the image forming apparatus due to the difference in internal structure of the image forming apparatus, the position of the first abutment portion 220 of the elliptical structure of the present application refers to the position when the first arc abutment surface 2251 is initially abutted against the acting portion 12, and the second abutment portion 221 refers to the position when the developing roller and the photosensitive drum are in a tendency to separate from each other and the first arc abutment surface 2251 is finally abutted against the acting portion 12.

The number of the second separating members 225 is at least two and is arranged along the axial direction of the second moving member 224, and the number of the driving members 22a matches the number of the second separating members 225. Thus, when there are several active portions 12 on the drum assembly, the projection means on the several second separating pieces 225 can act correspondingly on the active portions 12.

As shown in fig. 19, one end of the transmission member 22a is in transmission connection with the second moving member 224, and the other end thereof is connected with the second separating member 225; the transmission member 22a includes a first connecting portion 22b, a connecting rod 22c, and a second connecting portion 22d sequentially connected, the first connecting portion 22b is rotatably connected to the second separating member 225, and the second connecting portion 22d is rotatably connected to the second moving member 224.

The first connecting portion 22b, the connecting rod 22c, and the second connecting portion 22d are integrally formed, so as to improve stability of the transmission process.

The second separating member 225 is provided with a second rotating shaft 2252, the second moving member 224 is provided with a third rotating shaft 2241, one end of the transmission member 22a is rotatably connected to the second rotating shaft 2252, and the other end of the transmission member 22a is rotatably connected to the third rotating shaft 2241. The present solution provides a specific implementation structure of the transmission member 22a for implementing transmission connection between the second separating member 225 and the second moving member 224, which has the characteristics of simple structure and convenient production and manufacture.

The force application member 13 of the image forming apparatus drives the second moving member 224 to move along the X-axis direction, the second moving member 224 drives the second separating member 225 to rotate in the XY plane to drive the first arc-shaped abutting surface 2251 to abut against the acting portion 12 of the drum assembly, and as the second separating member 225 continues to rotate in the XY plane, the abutting position of the first arc-shaped abutting surface 2251 and the acting portion 12 slides from the first abutting portion 220 to the second abutting portion 221, at this time, the photosensitive drum 11 is separated from the developing roller 211.

as shown in fig. 15 and 16, the urging member of the image forming apparatus does not apply an urging force to the urging portion 25, the elastic member 23 is in a non-compressed state, and the first arcuate abutment surface 2251 on the second separating member 225 is not in contact with the acting portion 12 of the drum assembly, at which time the photosensitive drum 11 is in contact with the developing roller 211;

when a process cartridge is mounted in the image forming apparatus, after a period of normal printing, the process cartridge of a certain color needs to be temporarily stopped from participating in printing, and the process cartridge can be separated from the photosensitive drum 11 by a driving force supplied from the image forming apparatus. For example, when monochrome printing is performed in the image forming apparatus, process cartridges of colors other than black are operated separately. Note that the black process cartridge may also be operated separately. When one color is printed, the printer needs to replace the processing box with different colors, the force application part of the image forming device applies the acting force along the +X axis direction to the force receiving part 25, the force receiving part 25 drives the second moving part 224 to move along the +X axis direction, and at the moment, the elastic part 23 has elastic potential energy after being compressed; the second connecting portion 22d of the transmission member 22a moves in the +x axis direction under the driving of the second moving member 224, and drives the second separating member 225 to rotate in the XY plane through the connecting rod 22c, so that the first arc-shaped abutting surface 2251 abuts against the acting portion 12 of the drum assembly, along with the rotation of the second separating member 225, the abutting position of the first arc-shaped abutting surface 2251 and the acting portion 12 slides from the first abutting portion 220 to the second abutting portion 221, and finally the second abutting portion 221 abuts against the acting portion 12, a force away from each other is generated between the process cartridge and the drum assembly, and the process cartridge and a component (cartridge 2) thereon displace in the direction approaching the photosensitive drum 11 (+y axis direction), so as to separate the photosensitive drum 11 on the drum assembly from the developing roller 211.

when the force applied to the force receiving portion 25 is removed by the force applying member of the image forming apparatus, the second moving member 224 moves in the-X axis direction under the elastic action of the elastic member 23, and drives the second connecting portion 22d of the driving member 22a to move in the-X axis direction, and drives the second separating member 225 to rotate in the opposite direction in the XY plane through the connecting rod 22c, the abutting position of the first arc-shaped abutting surface 2251 and the acting portion 12 slides from the second abutting portion 221 to the first abutting portion 220, so that the first arc-shaped abutting surface 2251 no longer applies force to the acting portion 12 of the drum assembly, and the process cartridge and the component (cartridge 2) thereon are displaced in the direction approaching the photosensitive drum 11 (-Y axis direction), so that the photosensitive drum 11 on the drum assembly is in contact with the developing roller 211 again.

Example 3

Example 3 differs from example 2 in that: the transmission member 22a is a gear, and the transmission member 22a is coaxially disposed with the second separating member 225; the second moving member 224 is provided with a rack matched with a gear, and the gear is engaged with the rack.

In the practical application process, when the processing box is in a normal printing state

The urging member of the image forming apparatus does not apply an urging force to the urging portion 25, the elastic member 23 is in a non-compressed state, and the first arcuate abutment surface 2251 on the second separating member 225 is not in contact with the acting portion 12 of the drum assembly, while the photosensitive drum 11 is in contact with the developing roller 211;

when a process cartridge is mounted in the image forming apparatus, after a period of normal printing, the process cartridge of a certain color needs to be temporarily stopped from participating in printing, and the process cartridge can be separated from the photosensitive drum 11 by a driving force supplied from the image forming apparatus. For example, when monochrome printing is performed in the image forming apparatus, process cartridges of colors other than black are operated separately. Note that the black process cartridge may also be operated separately.

When one color is printed, the printer needs to replace the processing box with different colors, the force application part of the image forming device applies the acting force along the +X axis direction to the force receiving part 25, the force receiving part 25 drives the second moving part 224 to move along the +X axis direction, and at the moment, the elastic part 23 has elastic potential energy after being compressed; under the driving of the second moving member 224, the rack moves along the +x axis direction, the gear drives the second separating member 225 to rotate in the XY plane under the driving of the rack, so that the first arc-shaped contact surface 2251 abuts against the acting portion 12 of the drum assembly, along with the rotation of the second separating member 225 in the XY plane, the contact position of the first arc-shaped contact surface 2251 and the acting portion 12 slides from the first contact portion 220 to the second contact portion 221, and finally the second contact portion 221 abuts against the acting portion 12, so that a force away from each other is generated between the process cartridge and the drum assembly, and the process cartridge and a component (cartridge 2) thereon displace in a direction approaching the photosensitive drum 11 (+y axis direction), thereby separating the photosensitive drum 11 on the drum assembly from the developing roller 211.

when the force applied to the force receiving portion 25 is removed by the force applying member of the image forming apparatus, the second moving member 224 moves in the-X axis direction under the elastic action of the elastic member 23, the rack moves in the-X axis direction, the gear drives the second separating member 225 to reversely rotate in the XY plane under the driving of the rack, the abutting position of the first arc-shaped abutting surface 2251 and the acting portion 12 slides from the second abutting portion 221 to the first abutting portion 220, so that the first arc-shaped abutting surface 2251 on the second separating member 225 no longer applies force to the acting portion 12 of the drum assembly, and the process cartridge and the component (cartridge 2) thereon are displaced in the direction approaching the photosensitive drum 11 (-Y axis direction), so that the photosensitive drum 11 on the drum assembly is in contact with the developing roller 211 again.

Example 4

Referring to fig. 21 to 29, embodiment 4 differs from embodiment 1 in that the separation mechanism 22 includes:

a third moving member 226 movably provided to the casing 2, the third moving member 226 being capable of receiving a force of the image forming apparatus;

the third separating piece 227 is rotatably arranged on the box body 2, the third separating piece 227 is provided with a second arc-shaped abutting surface 2271, and the first abutting part 220 and the second abutting part 221 are arranged on the second arc-shaped abutting surface 2271; and

A limiting piece 2261 disposed at an end of the third moving piece 226, the limiting piece 2261 supporting or clamping one side or both sides of the third separating piece 227;

the urging force of the image forming apparatus drives the third moving member 226 to move in the X-axis direction, and the stopper 2261 urges the third separating member 227 to swing in the XY plane so that the second arc-shaped abutment surface 2271 abuts against the drum assembly; and as the third separator 227 swings in the XY plane, the abutment position of the second arc-shaped abutment surface 2271 with the drum assembly slides from the first abutment portion 220 to the second abutment portion 221, and the photosensitive drum 11 separates from the developing roller 211.

Specific:

the cover 217 is provided with a through slot extending in a first direction (X-axis direction), the third moving member 226 is mounted in the through slot and extends out of an end of the through slot, and the third moving member 226 can move in the X-axis direction in the through slot. The third moving member 226 may be a long object such as a shaft or a rod, in this embodiment, the third moving member 226 is preferably a shaft member with a circular cross section, and the through slot is correspondingly configured as a through slot with a circular cross section.

As shown in fig. 24 to 26, the box cover 217 is further provided with a positioning boss 21b, and the connection end of the third separating member 227 is rotatably connected to the positioning boss 21b, specifically may be hinged by a pin, so that the third separating member 227 is mounted on the positioning boss 21b, and the free end thereof may also swing around the pin. The positioning boss 21b is located at one end of the cap 217 in the X-axis direction, i.e., the third separating member 227 is also located at one end of the cap 217 in the X-axis direction.

Preferably, the positioning bosses 21b are provided at both ends of the box cover 217 in the X-axis direction, and the positioning bosses 21b at both ends are rotatably provided with the third separating member 227. Both ends of the third moving member 226 in the length direction can be extended to a position close to the third separating member 227. The separating mechanism 22 is arranged at the two ends of the box cover 217 to separate the drum rollers better.

The third separating element 227 is a block-shaped element with a length, the third separating element 227 can swing in an XY plane (a plane formed by an X axis and a Y axis), and a second arc-shaped abutting surface 2271 is provided at an end of the third separating element 227, so that a motion track of a free end of the third separating element 227 is an arc, and the first abutting portion 220 and the second abutting portion 221 are disposed on the second arc-shaped abutting surface 2271.

As shown in fig. 24 to 26, one end of the third moving member 226 in the first direction is provided with a stopper 2261, the third moving member 226 receives the force movement of the image forming apparatus in the X-axis direction through the stopper 2261, and is connected to the third separating member 227 through the stopper 2261, thereby driving the third separating member 227 to swing in the XY plane during the movement of the third moving member 226. The third moving member 226 and the limiting member 2261 may be integrally formed or be a split structure, and the limiting member 2261 is fixedly mounted at an end of the third moving member 226 by welding, adhering, fastening, plugging or other means.

As shown in fig. 24 to 26, the stopper 2261 includes a force receiving portion 25 and a stopper post 2261a, the force receiving portion 25 being provided outside one end of the third moving member 226 in the +x axial direction, the force receiving portion 25 being adapted to be in contact engagement with the urging member 13 of the image forming apparatus, the urging member 13 being adapted to apply an urging force to the force receiving portion 25 so as to control the contact or separation of the developing roller 211 from the photosensitive drum. In embodiment 3, the force receiving portion 25 may be a bar-shaped block member or may be an L-shaped block member. The size of the force receiving portion 25 is larger than that of the through groove, so that the third moving member 226 is prevented from being separated from the through groove.

As shown in fig. 24 to 26, the stopper post 2261a is disposed on the force receiving portion 25, specifically, the stopper post 2261a is located on the lower side (i.e., -Z-axis side) of the force receiving portion 25, and the length direction of the stopper post 2261a extends along the-Z-axis direction, and the stopper post 2261a may be a cylindrical post. The limit post 2261a and the force receiving part 25 may be integrally formed or be a split structure, and may be fixedly mounted on the force receiving part 25 by welding, pasting, fastening, plugging or other means.

In this embodiment, as shown in fig. 24 to 26, the force receiving portion 25 is formed as an "L" -shaped block, the number of the limit posts 2261a is two, the two limit posts 2261a are respectively provided on the lower sides of the two arms of the "L" -shaped force receiving portion 25, the distances from the two limit posts 2261a to the first side wall 215 in the X-axis direction are different, the distances from the two limit posts 2261a to the box cover 217 in the Y-axis direction are also different, that is, the connecting line between the two limit posts 2261a intersects with the Y-axis direction. The third separating member 227 is located at the lower side of the force receiving portion 25, and the lower end of the limiting post 2261a can reach the position of the third separating member 227, so that the two limiting posts 2261a are clamped at both sides of the third separating member 227, and the third separating member 227 is limited between the two limiting posts 2261a, so that the third moving member 226 can drive the third moving member to swing.

In some other embodiments, the limit post 2261a may be one, where the limit post 2261a can be supported on the rear side (-Y axis side) of the third separating member 227, and when the third moving member 226 moves, the limit post 2261a contacts the rear side of the third separating member 227 and still drives the third separating member 227 to swing in the XY plane.

As shown in fig. 26 to 28, in the present embodiment, the position where the first abutment portion 220 is preliminarily brought into contact with the acting portion 12 of the drum assembly is the third position of the third separator 227, the position where the developing roller 211 has a tendency to separate from the photosensitive drum 11 is the fourth position of the third separator 227, and the locus of the second arc-shaped abutment surface 2271 of the third separator 227 swinging between the third position and the fourth position is an arc. It will be appreciated that when the third moving member 226 moves under the urging force of the urging member 13 of the image forming apparatus in the X-axis direction, the stopper 2261 moves synchronously, and the third separating member 227 can be driven to swing in the XY plane from the third position to the fourth position by the sandwiching action of the stopper post 2261a on the third separating member 227. The position of the free end of the third separator 227 in the fourth position is higher than the position of the free end of the third separator 227 in the third position, that is, the distance from the free end of the third separator 227 to the cap 217 in the fourth position is greater than the distance from the free end of the third separator 227 to the cap 217 in the third position in the second direction (Y-axis direction) intersecting the first direction (X-axis direction).

Since the spatial relative position of the process cartridge to the acting portion 12 of the drum assembly changes when the process cartridge is mounted to the image forming apparatus due to the difference in internal structure of the image forming apparatus, the position of the first abutting portion 220 of the second arcuate abutting surface 2271 of the present application is the position at which the third separating member 227 is initially abutted against the acting portion 12, and the second abutting portion 221 is the position at which the third separating member 227 is finally abutted against the acting portion 12 when the developing roller and the photosensitive drum tend to separate.

In the third position, the length direction of the third separating member 227 intersects the second direction (Y-axis direction), i.e., the length direction of the third separating member 227 has a certain angle with the Y-axis direction; in the fourth position, the third separator 227 is at a smaller angle to the second direction (Y-axis direction) than in the third position.

As shown in fig. 24 and 26, the elastic member 23 is sleeved on the third moving member 226 and is located between the force receiving portion 25 and the end portion of the box cover 217 in the +x direction, when the third moving member 226 receives the force applied by the force applying member 13 along the X axis direction to move, the elastic member 23 is compressed, elastic potential energy is stored, and when the force applied by the force applying member 13 is removed, the elastic member 23 deforms to recover, so as to push the third moving member 226 to move in the opposite direction. The elastic member 23 is preferably a compression spring, and may be any member that can provide a desired elastic force, such as an elastic sponge, elastic rubber, a spring piece, or the like.

Fig. 28 is an operational state view of the separation mechanism 22 when the developing roller 211 of the process cartridge and the photosensitive drum 11 are in contact in the present embodiment, and fig. 29 is an operational state view of the separation assembly when the developing roller 211 of the process cartridge and the photosensitive drum 11 are separated in the present embodiment. When the image forming apparatus is in operation (e.g., in printing), the urging member 13 does not apply an urging force to the separating mechanism 22, and the third separating member 227 is in the third position, and at this time, the cartridge 2 is moved toward the photosensitive drum by the urging member provided in the drum assembly due to no external force, so that the photosensitive drum 11 is brought into close contact with the developing roller 211. When the image forming apparatus is finished (e.g., after printing is finished), it is necessary to separate the photosensitive drum from the developing roller 211, at which time the urging member 13 of the image forming apparatus is brought into contact with the urging member 25 of the stopper 2261, an urging force in the-X axis direction is applied thereto, the third moving member 226 moves in the-X axis direction with respect to the casing 2 under the urging force, the urging member 25 moves with the third moving member 226 to compress the elastic member 23 to store elastic potential energy, and at the same time, the stopper post 2261a holds the third separating member 227 to swing in the XY plane from the third position to the fourth position, even if the free end of the third separating member 227 moves in the front direction (+y axis direction) with respect to the casing 2, during the swing of the free end of the third separating member 227 in the XY plane from the third position to the fourth position, that is, in the process that the abutting position of the third separating member 227 and the acting portion 12 slides from the first abutting portion 220 to the second abutting portion 221, the free end gradually rises relative to the casing 2 in the direction away from the casing 2 (that is, the position of the free end of the third separating member 227 is higher when the third separating member 227 is located at the fourth position than the position of the free end of the third separating member 227 when the third separating member 227 is located at the third position), so that the free end of the third separating member 227 contacts (interferes with) and presses the acting portion 12 of the drum assembly, the acting portion 12 of the drum assembly applies a reaction pressure to the third separating member 227, thereby forming a thrust force of the third separating member 227 to the lid 217 of the casing 2, and further forming a force of the process cartridge away from the photosensitive drum, forcing the process cartridge to move in the direction away from the photosensitive drum, enabling a distance between the developing roller 211 and the photosensitive drum 11 to be pulled, the developing roller 211 is separated from the photosensitive drum 11, preventing the problems of contamination of the photosensitive drum 11 or deformation of the developing roller 211 caused by long-time contact of the developing roller 211 with the photosensitive drum 11.

As shown in fig. 28 and 29, when the image forming apparatus needs to start operating, the urging force of the urging member 13 to the urging portion 25 needs to be removed, the elastic member 23 releases elastic potential energy, and the third moving member 226 and the stopper 2261 are pushed to move in the +x axis direction with respect to the casing 2, while the third separating member 227 is swung in the XY plane by the stopper post 2261a of the stopper 2261 from the fourth position to the third position, that is, the abutment position of the third separating member 227 with the acting portion 12 slides from the second abutment portion 221 to the first abutment portion 220, and the free end of the third separating member 227 moves in the-Y axis direction (the free end of the third separating member 227 gradually descends in the direction approaching the casing 2 with respect to the casing 2), and at this time, the free end of the third separating member 227 is out of contact with the acting portion 12 of the drum assembly, and at this time, the process cartridge is forced to move in the direction approaching the photosensitive drum by the gravity of the process cartridge, so that the developing roller 211 is brought into close contact with the photosensitive drum.

Example 5

Referring to fig. 30 to 32, the separation mechanism 22 includes:

a fourth separating member 228 at least partially protruding from the case 2, and the fourth separating member 228 is rotatable about an axis, such that the fourth separating member 228 is rotatable relative to the case 2; the portion of the fourth separating piece 228 protruding from the box body 2 has an arc structure, and the first abutting portion 220 and the second abutting portion 221 are disposed on the arc structure;

The acting force of the image forming device drives the box body 2 to move along the X-axis direction so as to enable the arc-shaped structure to be abutted with the drum assembly; the cartridge 2 continues to move, and the fourth separating member 228 rotates in the XY plane, and the abutment position of the arc structure with the drum assembly slides from the first abutment portion 220 to the second abutment portion 221, and the photosensitive drum 11 separates from the developing roller 211. Specific:

when the separating mechanism 22 is mounted on the box body 2, at least part of the fourth separating member 228 protrudes out of the box body 2, the part of the fourth separating member 228 protruding out of the box body 2 has an arc structure, when the box body 2 is mounted on the image forming device, the separating mechanism 22 moves along with the movement of the box body 2 under the action of external force (driven by the image forming device), the fourth separating member 228 in the separating mechanism 22 contacts with the action part 12 arranged in the image forming device and finally moves to an abutting position capable of realizing complete separation or partial separation of the developing roller 211 and the photosensitive drum 11, and the fourth separating member 228 is arranged into an arc structure, so that the problem that in the prior art, the fourth separating member 228 is damaged by parts due to the adoption of a plane or inclined plane structural mode in the process of contacting with the action part 12 under the action of transient stress or the condition that the fourth separating member 228 is accelerated in the long-term use process is solved, and the printing quality of the image forming device is further influenced, and the fourth separating member 228 has the advantages of simplifying mechanical structure, assembling and replacing and avoiding the damage of the parts.

In the present embodiment, the cartridge body 2 further has a first side 21c and a second side 21d (the first side 21c is directed to the second side 21d in the-Y direction) and an outlet 21e in the Y direction, the developing roller 211 is rotatably provided at the outlet 21e of the cartridge body 2, and the developing roller 211 is partially located outside the process cartridge, the developing roller 211 can convey the developer in the process cartridge to the outside of the process cartridge by rotation, and the toner feeding roller 219 is rotatably provided inside the developing roller 211 in the process cartridge, and can feed the developer to the developing roller 211; the fourth separating member 228 and the developing roller 211 are both mounted on the first side 21c of the cartridge body 2, and both protrude partially from the first side 21c, so that the developing roller 211 can be partially located outside the process cartridge, and the fourth separating member 228 protrudes partially outside the cartridge body 2; when the cartridge 2 is mounted in the image forming apparatus, the first side 21c of the cartridge 2 faces the action portion 12 of the image forming apparatus, and the position of the fourth separating member 228 corresponds to the position of the action portion 12, so that the fourth separating member 228 contacts the action portion 12 after the cartridge 2 is mounted in the image forming apparatus; alternatively, in some other embodiments, after the cartridge 2 is mounted in the image forming apparatus, the fourth separating member 228 does not contact the acting portion 12, and after the image forming apparatus drives the cartridge 2 to move in the longitudinal direction of the cartridge 2, the fourth separating member 228 contacts the acting portion 12, and the acting portion 12 ejects the fourth separating member 228.

Further, in some embodiments, the fourth separating member 228 is a roller or a roller, such that the fourth separating member 228 is provided with an arc structure capable of protruding from the box 2, and the fourth separating member 228 of the roller or the roller is capable of rotating around an axis located in the XY plane, that is, the fourth separating member 228 is capable of rotating on the box 2, such that the fourth separating member 228 can reduce collision when in use, avoid damage to components caused by transient stress, and the axis of the fourth separating member 228 is perpendicular to the length direction of the box 2. Specifically, in the present embodiment, the acting portion 12 on the image forming apparatus is a roller, when the process cartridge is mounted on the image forming apparatus, the axis of the fourth separating member 228 is parallel to the axis of the roller, and the peripheral surface of the fourth separating member 228 is in contact with the peripheral surface of the roller, when the image forming apparatus drives the cartridge 2 to move in the X-axis direction, the whole cartridge 2 is moved in the axial direction (X-direction), the fourth separating member 228 in the separating mechanism 22 is gradually brought into rolling contact along the outer wall of the roller provided in the image forming apparatus against a certain friction force, the axis of the fourth separating member 228 is parallel to the axis of the acting portion 12 when the cartridge 2 is mounted on the image forming apparatus, the fourth separating member 228 and the roller relatively roll in the XY plane, the roller can eject the fourth separating member 228 in the-Y direction, and finally move to an abutment position where the developing roller 211 can be completely separated or partially separated from the photosensitive drum 11, and the developing roller 211 on the cartridge 2 can be separated from the photosensitive drum 11.

It should be noted that, when the fourth separating member 228 is a roller or a roller, the first abutting portion 220 and the second abutting portion 221 are two ends of the abutting arc segments on the roller or the roller, and the roller or the roller can rotate around the shaft, that is, the roller or the roller can include a plurality of abutting arc segments, the position of each abutting arc segment, which is initially abutted against the acting portion 12, is the first abutting portion 220, and the abutting position of each abutting arc segment, which is abutted against the acting portion 12, is the second abutting portion 221 when the developing roller 211 and the photosensitive drum 11 have a tendency to separate.

Preferably, in some embodiments, the fourth separating members 228 are detachably mounted on the first side 21c of the case 2, and two fourth separating members 228 are disposed on the case 2, when the fourth separating members 228 are mounted on the case 2, the two fourth separating members 228 are distributed on the case 2 along the length direction of the case 2, the fourth separating members 228 are disposed on the first side 21c of the case 2, so that the fourth separating members 228 can protrude from the case 2 to be used for contacting with the acting portion 12, and two fourth separating members 228 are disposed, and the two fourth separating members 228 are distributed along the length direction of the case 2 to be adapted to the structure of the acting portion 12 of the image forming apparatus.

Specifically, in the present embodiment, two first grooves 21f are provided on the first side 21c of the case 2, two first positioning portions 21g provided in the X direction are provided in each first groove 21f, first positioning posts 2281 are provided at both ends of the fourth separating member 228 of the roller or the roller, and when the fourth separating member 228 is mounted in the first groove 21f, the first positioning posts 2281 are caught in the first positioning portions 21g and can rotate in the first positioning portions 21g, so that the fourth separating member 228 can rotate in the first grooves 21f, and the fourth separating member 228 can rotate relative to the acting portion 12 on the case 2; the height of the first groove 21f is smaller than the diameter of the fourth separating member 228, so that the fourth separating member 228 can partially protrude from the first side surface 21c after being mounted in the first groove 21f, that is, protrude from the case 2, two working portions 12 in the image forming apparatus are provided, and the two fourth separating members 228 provided on the case 2 are respectively used for contacting the two working portions 12.

Preferably, in some embodiments, the case 2 is further provided with a force receiving portion 25, and a portion of the force receiving portion 25 protrudes from an end surface of the case 2 in a length direction of the case 2, and the case 2 is enabled to receive a driving force of the image forming apparatus along the X-axis direction by the force receiving portion 25, for separating the case 2 from the image forming apparatus. Specifically, in the present embodiment, the force receiving portion 25 is disposed on the casing 2, and partially protrudes from the first end of the casing 2, and the force receiving portion 25 has a cylindrical structure, and when the casing 2 is mounted on the image forming apparatus, the force receiving portion 25 can receive a drive from the image forming apparatus, so that the casing 2 moves in the +x direction in the image forming apparatus, and the fourth separating member 228 on the casing 2 also moves in the +x direction along with the casing 2, contacts the acting portion 12 of the image forming apparatus, and is ejected by the acting portion 12, so that the developing roller 211 of the casing 2 is separated from the photosensitive drum 11.

Further, in some embodiments, the first end portion of the case 2 further includes a protecting cover 21h and a transmission device 21i, when the transmission device 21i is mounted on the case 2, the transmission device 21i is not damaged when the transmission device 21i is mounted on the first side wall 215 of the case 2, the protecting cover 21h is mounted on the end face of the case 2 through bolts, the transmission device 21i is received in the protecting cover 21h, so that the protecting cover 21h can protect the transmission device 21i, and the protecting cover 21h is further provided with a first opening, the transmission device 21i is provided with a coupling shaft extending from the first opening, the developing roller 211 is in transmission connection with the transmission device 21i, the transmission device 21i can drive the developing roller 211 to rotate on the case 2 through the first opening, and when the application portion 12 is disposed on the first end portion 321 of the case 2, the application portion 12 protrudes out of the protecting cover 21h, so that the application portion 12 can more easily receive the driving of the image forming device.

The utility model discloses when the structure is used, after box body 2 installs on image forming device, when needs are separated developer roll 211 and sensitization drum 11, image forming device sets up drive arrangement and starts, drive arrangement and atress portion 25 contact, and drive atress portion 25 is in the +X direction removal, make box body 2 remove in the +X direction, fourth separator 228 on the box body 2 remove the back and contact with action portion 12 in the +X direction, and along with the removal of box body 2, fourth separator 228 is rotatory in the XY plane and is ejecting by action portion 12, arc structure and the butt position with action portion 12 slide to second butt portion 221 from first butt portion 220 promptly, make box body 2 be ejecting in image forming device, make developer roll 211 and sensitization drum 11 separate.

In embodiment 5, the force is applied to the cartridge 2 by the force application member 13 of the image forming apparatus, so that the cartridge 2 can move in the longitudinal direction and the separation mechanism 22 is driven to move in the direction approaching the action portion 12, so that the separation mechanism 22 can abut against the action portion 12, and since the space of the mounting position of the process cartridge in the conventional image forming apparatus is small, the process cartridge 1 cannot move greatly, and therefore, the distance between the separation mechanism 22 and the action portion 12 provided by the present application is small, so that the separation mechanism 22 can abut against or separate from the action portion 12 by a minute movement of the process cartridge 1, and further, the normal abutment and separation of the developing roller 211 and the photosensitive drum 11 are ensured.

Example 6

As shown in fig. 33 to 43, another process cartridge is provided in this embodiment, which is different from embodiment 5 in that: in this embodiment, the separating mechanism 22 further includes a fourth moving member 229, the fourth moving member 229 is detachably mounted on the case 2, the fourth separating member 228 is mounted on an end portion of the fourth moving member 229, and the fourth separating member 228 can be detachably mounted on the case 2 through the fourth moving member 229.

Preferably, in some embodiments, the case 2 is provided with a guide unit 21j extending along the X-axis direction, the fourth moving member 229 is detachably mounted on the guide unit 21j, and the fourth moving member 229 is capable of receiving a driving force of the image forming apparatus along the X-axis direction to move on the guide unit 21j, and when the separation mechanism 22 is mounted on the case 2, the fourth moving member 229 is capable of moving along the length direction of the case 2, and is capable of moving in the X-axis direction to drive the case 2, that is, the separation mechanism 22 in this embodiment corresponds to the separation force receiving portion in embodiment 5. Specifically, in the present embodiment, the guide unit 21j is provided on the first side 21c of the casing 2, and the separation mechanism 22 is detachably assembled with the guide unit 21j, and the separation mechanism 22 is configured to receive the force applied by the force applying portion provided inside the main body of the image forming apparatus and move along the path defined by the guide unit 21j provided on the casing 2, so as to control the contact, partial or total separation of the developing roller 211 and the photosensitive drum 11 provided in the image forming apparatus.

Further, in some embodiments, the guide unit 21j includes at least one guide rail capable of allowing the fourth moving member 229 to move on the case 2, and at least one restricting portion capable of restricting the fourth moving member 229 on the case 2, so that the fourth moving member 229 can be mounted on the case 2 through the guide unit 21j and can move on the case 2. Specifically, in the present embodiment, the guide unit 21j includes at least one guide rail and two limiting portions, that is, a first limiting portion 21k and a second limiting portion 21p, the first limiting portion 21k being disposed on the first side surface 21c, and one end of the transmission device 21i and the protective cover 21h being disposed adjacent to the case 2, that is, near the first side wall 215; the second restriction portion 21p is provided at the first side surface 21c, i.e., near the second side wall of the case 2. The guide rail is configured to include a first guide rail 21q, the first guide rail 21q is provided on the first side surface 21c and extends to the second side surface along the first side wall 215 of the case 2, the first restriction portion 21k and the second restriction portion 21p are each of a substantially annular structure, and are each provided with a through hole having a diameter slightly larger than that of the fourth movement member 229, so that the fourth movement member 229 in the separation mechanism 22 is fitted on the guide rail through the through holes in the first restriction portion 21k and the second restriction portion 21p, respectively, and is movable on the guide rail.

Preferably, in some embodiments, two fourth separating members 228 are provided and are respectively installed at two end portions of the fourth moving member 229, and when the fourth moving member 229 is installed on the box 2, the end portion of the fourth moving member 229 protrudes out of the end portion of the box 2, so that the fourth separating member 228 connected with the fourth moving member 229 is located outside the end portion of the box 2, and the fourth separating member 228 is disposed outside the end portion of the box 2 through the fourth separating member 228, so that the fourth separating member 228 can conveniently move on the box 2 without affecting other components on the box 2. Specifically, in the present embodiment, the fourth moving member 229 is preferably a shaft, the separating mechanism 22 includes two fourth separating members 228, the two fourth separating members 228 are respectively disposed at the first end 321 and the second end 322 of the fourth moving member 229, the length of the fourth moving member 229 is longer than that of the case 2, when the fourth moving member 229 is mounted on the first rail 21q, both ends of the fourth moving member 229 protrude from the first side wall 215 and the second side wall 216 of the case 2, and when the two fourth separating members 228 are connected to the ends of the fourth moving member 229, they are respectively located outside two end faces of the case 2 that are disposed opposite to each other in the X direction. Alternatively, in some other embodiments, the number of the fourth separating members 228 may be plural to accommodate the fourth moving member 229, the separating mechanism 22, the guide unit 21j, and the process cartridge of different structures, the structure of the fourth moving member 229 is not limited to the shaft, and the fourth moving member 229 may be configured as other rotating members to accommodate the separating mechanism 22, the guide unit 21j, and the process cartridge of different structures.

Further, in some embodiments, the fourth separating member 228 is detachably mounted at an end of the fourth moving member 229, one of the two fourth separating members 228 is detachably assembled with the fourth moving member 229, or both of the four separating members 228 are detachably assembled with the fourth moving member 229, so as to facilitate the detachment and replacement of the fourth separating member 228. Specifically, in the present embodiment, two fourth separating pieces 228 are detachably assembled with the fourth moving piece 229, each of the two fourth separating pieces 228 is configured to include a frame 2282 and a movable piece 2283, the frame 2282 is connected to an end of the fourth moving piece 229, a housing portion 2282a is provided on the frame 2282, and a second positioning portion 2282b is provided along the Z direction, a part of the movable piece 2283 is disposed in the housing portion 2282a, the movable piece 2283 is configured to have a cylindrical structure, second positioning posts 2283a are provided at both end portions thereof, when the movable piece 2283 is disposed in the housing portion 2282a, the second positioning posts 2283a are engaged into the second positioning portions 2282b, the movable piece 2283 is mounted in the second positioning portions 2282b through the second positioning posts 2283a, and is capable of being movably rotated about an axis, another part of the movable piece 2283 is exposed from an opening of the housing portion 2282a, and the exposed part of the movable piece 2283 of the cylindrical structure has an arc-shaped surface, so that the fourth separating piece 228 is prevented from being damaged; when the fourth moving member 229 is mounted on the case 2, the axial directions of the two moving members 2283 are parallel to the Z direction, that is, the axis of the moving member 2283 is perpendicular to the X direction, so that the fourth separating member 228 can roll in the X direction when the case 2 moves in the X direction.

Preferably, in some embodiments, the separating mechanism 22 further includes an elastic member 23, the elastic member 23 is sleeved on the fourth moving member 229, and the elastic member 23 is disposed between the end of the box 2 and the fourth separating member 228, the fourth moving member 229 can be reset through the elastic member after being driven to move by external connection, the fourth moving member 229 can be reset through the elastic member 23, so that the separating mechanism 22 can be reset, the developing roller 211 of the box 2 can be separated from the photosensitive drum 11 through driving of the image forming device, and the developing roller can be reset to be in contact with the photosensitive drum 11 after being driven to be withdrawn. Specifically, in the present embodiment, the elastic member 23 is a compression spring, the elastic member 23 is provided on the fourth moving member 229 at a position of the case 2 adjacent to the protective cover 21h, at this time, the elastic member 23 is sleeved on the fourth moving member 229 and located between the first limiting portion 21k and the frame 2282 of the fourth separating member 228 disposed on the same side in the X direction, the diameter of the elastic member 23 is slightly larger than the diameter of the fourth moving member 229 and the through hole and smaller than the maximum diameter of the first limiting portion 21k, when the case 2 receives the force of the image forming apparatus driving, the frame at one end of the fourth moving member 229 receives the image forming apparatus driving, the fourth moving member 229 can move along the path defined by the guide rail toward the +x direction, and when the force of the image forming apparatus driving is removed, the fourth moving member 229 receives the elastic force of the elastic member 23, and the fourth moving member 229 can move along the path defined by the guide rail toward the-X direction to return to the original position. Alternatively, in some other embodiments, the elastic member 23 may be any material that can provide a desired elastic force.

When the device of this embodiment is used, the acting portion 12 of the image forming apparatus is provided with the abutting portion 121 facing the Y direction, the force application member 13 provided in the image forming apparatus applies the +x direction force to the fourth separating member 228 provided on the same side as the protecting cover 21h, i.e., in this embodiment, the fourth separating member 228 corresponds to the force receiving portion 25, and receives the driving force of the image forming apparatus, the fourth moving member 229 drives the two fourth separating members 228 to move along the path defined by the guide rail toward the +x direction, the elastic member 23 between the first limiting portion 21k and the fourth separating member 228 provided on the same side gradually deforms, the two fourth separating members 228 come into pre-contact with the two acting portions 12 provided in the image forming apparatus, i.e., the first abutting portion 220 abuts against the acting portion 12, the moving members 2283 in the two fourth separating members 228 axially rotate in the frame 2282 (i.e., rotate in the XY plane), the two moving members 2283 continuously apply the force in the X direction to the fourth separating member 228 along the guide rail, the two moving members 2283 gradually contact with the two acting portions 12 are applied to the two gradually acting portions 22, and the two gradually acting portions 22 are forced to completely abut against the developing roller 12, and the two gradually acting portions 22 are forced to move against the two acting portions 12, respectively abut the two acting portions 12, and the two acting portions 12 are forced to move against the two gradually acting portions 12 are applied to the moving portions 22 are applied to the two moving members 2283.

When the urging force of the urging member 13 provided in the image forming apparatus to the fourth separating member 228 provided on the same side as the protective cover 21h is gradually reduced, the elastic member 23 located between the first restricting portion 21k and the fourth separating member 228 provided on the same side is urged toward the fourth moving member 229 by the restoring force, and simultaneously drives the two fourth separating members 228 to move toward the-X direction, both the movable members 2283 axially rotate (i.e., reversely rotate in the XY plane) in the frame 2282, and as the two fourth separating members 228 and the fourth moving member 229 continue to move toward the-X direction under the deforming force of the elastic member 23, the two movable members 2283 gradually roll along the surfaces of the two acting portions 12, i.e., slide from the second abutting portion 221 to the first abutting portion 220, against the frictional force, respectively, until the two movable members 2283 are out of contact with the two acting portions 12, and at this time, the process cartridge moves toward the Z direction as shown in fig. 14 by the force of gravity, forcing the developing roller 211 to contact with the photosensitive drum 11 provided in the image forming apparatus.

In this embodiment, the developing roller 211 and the cartridge 2 are the same as those in embodiment 5, and will not be described here.

Example 7

As shown in fig. 44 to 50, another process cartridge is provided in this embodiment, which is different from embodiment 6 in that: in this embodiment, the fourth moving member 229 protrudes from the first side wall 215 of the case 2, and the fourth separating member 228 is provided with one, and the fourth separating member 228 is mounted on an end face of the fourth moving member 229 protruding.

Preferably, in the present embodiment, the guide unit 21j includes a guide rail capable of allowing the fourth moving member 229 to move in the X-axis direction on the case 2, and a restricting portion capable of restricting the fourth moving member 229 to the case 2, so that the fourth moving member 229 can be mounted on the case 2 through the guide unit 21j and can move on the case 2. Specifically, in the present embodiment, the second guide rail 21r extends from the first end face of the case 2 to a position of approximately one third of the length of the case 2 in the X direction on the first side face 21c, the guide rail is provided with the third restriction portion 21X, the third restriction portion 21X is provided at a third position of the first side face 21c, one end of the transmission device 21i and the protective cover 21h is provided adjacent to the case 2 at the third position, that is, near the first side wall 215, the third restriction portion 21X is of a substantially annular structure, fixed to the case 2, and is provided with through holes, the fourth movement member 229 is a second-order shaft provided with a first diameter and a second diameter, and the size of the through hole diameter is slightly larger than the first diameter size of the fourth movement member 229, so that the fourth movement member 229 can be partially fitted on the guide rail, partially extend out of the first end face of the case 2 through the through hole of the third restriction portion 21X, the fourth separation member 228 is connected outside the first end face of the case 2, and the fourth movement member 229 can be moved on the guide rail.

Further, the structure of the fourth separating member 228 is the same as that of the fourth separating member 228 in embodiment 6, the fourth separating member 228 is configured to include a frame 2282 and a movable member 2283, the frame 2282 is connected to one end of the fourth moving member 229, the frame 2282 is provided with a receiving portion 2282a and a second positioning portion 2282b, a part of the movable member 2283 is disposed in the receiving portion 2282a, the movable member 2283 is configured to have a cylindrical structure, both end portions of the movable member 2283 are provided with second positioning posts 2283a, and when the movable member 2283 is mounted in the receiving portion 2282a, the second positioning posts 2283a are engaged into the second positioning portions 2282b, and the other part of the movable member 2283 is exposed from the opening of the receiving portion 2282a, and the exposed part of the movable member 2283 has an arc-shaped structure, so that the fourth separating member 228 can be prevented from being damaged; it is understood that when the movable member 2283 is snapped into the second positioning portion 2282b by the second positioning post 2283a, the movable member 2283 can rotate in the XY plane. And the fourth moving member 229 is mounted on the case 2, the axial direction of the movable member 2283 is parallel to the Z direction.

Preferably, in some embodiments, the developing device further includes an elastic member 23, the elastic member 23 is disposed between one end of the fourth moving member 229 and the case 2, the fourth moving member 229 can be reset through the elastic member 23 after being driven by the external connection of the fourth moving member 229, the fourth moving member 229 can be reset through the elastic member 23, the separating mechanism 22 can be reset, the developing roller 211 of the case 2 can be separated from the photosensitive drum 11 through the driving of the image forming device, and the developing roller can be reset to be in contact with the photosensitive drum 11 after the driving is removed. Specifically, in the present embodiment, the elastic member 23 is accommodated in the second rail 21r, the second rail 21r is provided with a protrusion 21t at an end far from the first side wall 215 of the case 2, and one end of the elastic member 23 is sleeved on the protrusion 21t on the second rail 21r, and the other end abuts against one end of the fourth moving member 229. When the fourth separating member 228 receives the force of the force applying portion in the image forming apparatus, the frame at one end of the fourth moving member 229 receives the driving of the image forming apparatus in the X-axis direction, the fourth moving member 229 may move in the +x direction along the path defined by the second guide rail 21r, and when the fourth moving member 229 receives the force of the elastic member 23, the fourth moving member 229 may move in the-X direction as shown in fig. 47 along the path defined by the second guide rail 21 r. Or in some other embodiments, may be any material that provides the desired spring force.

In this embodiment, the structures of the developing roller 211 and the cartridge 2 are the same as those of embodiment 6, and the principle of use is the same as that of embodiment 6, and details thereof will not be described here again, and reference is made to the description of embodiment 5.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present application, and are not limiting. Although the application has been described in detail with reference to the foregoing embodiments, it will be appreciated by those skilled in the art that variations may be made to the embodiments described, or equivalents may be substituted for elements thereof in part or in whole. Such modifications and substitutions do not depart from the spirit of the application.

Claims

1. A process cartridge detachably mountable to an image forming apparatus provided with a photosensitive drum (11) and a drum assembly; wherein the process cartridge comprises:

a cartridge (2) provided with a developing roller (211), the cartridge (2) being movable between a first position at which the developing roller (211) abuts against the photosensitive drum (11) and a second position; at the second position, the developing roller (211) is separated from the photosensitive drum (11);

A separation mechanism (22) rotatably connected to the case (2); the separation mechanism (22) comprises a first abutting part (220) and a second abutting part (221), when the box body (2) receives the acting force of the image forming device, the separation mechanism (22) moves to be abutted with the drum assembly, and when the abutting position of the separation mechanism (22) and the drum assembly slides from the first abutting part (220) to the second abutting part (221) along with the rotation of the separation mechanism (22), the box body (2) moves from the first position to the second position and is kept at the second position.

2. A process cartridge according to claim 1, wherein said separation mechanism (22) includes a moving member and a separating member, said first abutting portion (220) and said second abutting portion (221) being provided on said separating member; the moving member can receive the acting force of the image forming device and drive the separating member to rotate in an XY plane or an XZ plane so that the abutting position of the separating member and the drum assembly slides from the first abutting part (220) to the second abutting part (221).

3. A process cartridge according to claim 2, wherein said separation mechanism (22) comprises:

A first moving member (222) movably disposed on the case (2), the first moving member (222) being configured to receive a force of the image forming apparatus; a rack (2222) is arranged on the first moving part (222); and

A first separating member (223) rotatably provided to the case (2); a protruding block (2231) is arranged on the radial wall surface of the first separating piece (223), the protruding block (2231) is provided with an inclined surface (2231 a), and the first abutting part (220) and the second abutting part (221) are respectively arranged at two ends of the inclined surface (2231 a); and the circumferential side wall of the first separating piece (223) is provided with a tooth group (2233), and the tooth group (2233) comprises a plurality of gear teeth uniformly distributed along the circumferential side wall of the first separating piece (223);

the acting force of the image forming device drives the first moving member (222) to move, and the first moving member (222) drives the first separating member (223) to rotate through the engagement of the tooth group (2233) and the rack (2222) so as to enable the inclined surface (2231 a) to abut against the drum assembly; and as the first separator (223) rotates, the abutment position of the inclined surface (2231 a) with the drum assembly slides from the first abutment portion (220) to the second abutment portion (221), and the photosensitive drum (11) is separated from the developing roller (211).

4. A process cartridge according to claim 3, wherein a space (2234) is further provided on a circumferential side wall of said first separating member (223), said space (2234) being formed in said tooth set (2233).

5. A process cartridge according to claim 3, wherein the cartridge body (2) is provided with a slide groove (212) extending in a longitudinal direction, the first moving member (222) is provided with a slide projection (2221), and the slide projection (2221) is slidably connected to the slide groove (212).

6. A process cartridge according to claim 3, wherein said cartridge body (2) is provided with a rotation shaft (213), said first separating member (223) is provided with a rotation through hole (2232), and said rotation shaft (213) is rotatably connected to said rotation through hole (2232).

7. A process cartridge according to claim 2, wherein said separation mechanism (22) comprises:

a second moving member (224) movably provided to the casing (2), the second moving member (224) being capable of receiving a force of the image forming apparatus;

the second separating piece (225) is rotatably arranged on the box body (2), the second separating piece (225) is provided with a first arc-shaped abutting surface (2251), and the first abutting part (220) and the second abutting part (221) are arranged on the first arc-shaped abutting surface (2251); and

A transmission member (22 a) having one end connected to the second moving member (224) and the other end connected to the second separating member (225);

the acting force of the image forming device drives the second moving member (224) to move, and the second moving member (224) drives the second separating member (225) to rotate through the transmission member (22 a) so as to enable the first arc-shaped abutting surface (2251) to abut against the drum assembly; and as the second separating member (225) rotates, the abutting position of the first arcuate abutting surface (2251) and the drum assembly slides from the first abutting portion (220) to the second abutting portion (221), and the photosensitive drum (11) is separated from the developing roller (211).

8. The process cartridge according to claim 7, wherein a mounting groove (214) is provided in the cartridge body (2), a first rotation shaft (2141) is provided in the mounting groove (214), and the second separating member (225) is rotatably connected to the mounting groove (214) through the first rotation shaft (2141).

9. A process cartridge according to claim 7, wherein said transmission member (22 a) includes a first connecting portion (22 b), a connecting rod (22 c), and a second connecting portion (22 d) connected in this order;

the second separating piece (225) is provided with a second rotating shaft (2252), the second moving piece (224) is provided with a third rotating shaft (2241), the first connecting part (22 b) is connected with the second rotating shaft (2252), and the second connecting part (22 d) is connected with the third rotating shaft (2241).

10. A process cartridge according to claim 2, wherein said separation mechanism (22) comprises:

a third moving member (226) movably provided to the casing (2), the third moving member (226) being capable of receiving a force of the image forming apparatus;

a third separating member (227) rotatably disposed on the case (2), the third separating member (227) having a second arc-shaped abutment surface (2271), the first abutment portion (220) and the second abutment portion (221) being disposed on the second arc-shaped abutment surface (2271); and

A stopper (2261) provided at an end of the third moving member (226), the stopper (2261) being supported or held by one or both sides of the third separating member (227);

the acting force of the image forming device drives the third moving member (226) to move, and the limiting member (2261) pushes the third separating member (227) to swing so as to enable the second arc-shaped abutting surface (2271) to abut against the drum assembly; and with the swinging of the third separating member (227), the abutting position of the second arc-shaped abutting surface (2271) and the drum assembly slides from the first abutting portion (220) to the second abutting portion (221), and the photosensitive drum (11) is separated from the developing roller (211).

11. A process cartridge according to claim 10, wherein said cartridge body (2) is provided with a positioning boss (21 b), and said connection end of said third separating member (227) is rotatably connected to said positioning boss (21 b).

12. A process cartridge according to claim 1, wherein said separation mechanism (22) comprises:

a fourth separating element (228) protruding at least partially outside the case (2), the fourth separating element (228) being rotatable about an axis, the fourth separating element (228) being rotatable relative to the case (2); the part of the fourth separating piece (228) protruding out of the box body (2) is provided with an arc-shaped structure, and the first abutting part (220) and the second abutting part (221) are arranged on the arc-shaped structure;

the acting force of the image forming device drives the box body (2) to move so as to enable the arc-shaped structure to be abutted with the drum assembly; the box body (2) continues to move, the fourth separating piece (228) rotates, the abutting position of the arc-shaped structure and the drum assembly slides from the first abutting part (220) to the second abutting part (221), and the photosensitive drum (11) is separated from the developing roller (211).

13. A process cartridge according to claim 12, wherein said separation mechanism (22) further comprises a fourth moving member (229), said fourth moving member (229) being detachably mounted on said cartridge body (2); the two ends of the fourth moving piece (229) are provided with frames (2282), the fourth separating piece (228) is installed in the frames (2282), and at least part of the fourth separating piece (228) protrudes out of the frames (2282).

14. A process cartridge according to any one of claims 1-13, wherein said separation mechanism (22) further includes an elastic member (23), and said separation mechanism (22) is capable of being reset by said elastic member (23) upon receiving a force drive of said image forming apparatus.

15. A process cartridge according to any one of claims 1-13, wherein said separating mechanism (22) is provided at one or both ends of said cartridge body (2) in the longitudinal direction.