CN220252394U

CN220252394U - Developing device

Info

Publication number: CN220252394U
Application number: CN202320459090.5U
Authority: CN
Inventors: 杨浩; 王常彪; 程晨; 武茹月
Original assignee: Zhuhai Nastar Information Technology Co ltd
Current assignee: Zhuhai Nastar Information Technology Co ltd
Priority date: 2022-03-14
Filing date: 2023-03-10
Publication date: 2023-12-26
Anticipated expiration: 2033-03-10

Abstract

The utility model discloses a developing device, which is detachably mounted on a box, and comprises: a cartridge body, a developing roller rotatably supported in the cartridge body; the acting piece is movably arranged on the box body and comprises a stress part, a force application part and a collision part, wherein the stress part is used for receiving the separation force of the electronic imaging device, the force application part is used for transmitting the separation force, and the collision part is contacted with the drum frame when the acting piece receives the movement of the separation force; the collecting piece comprises a forcing part and a matching part, wherein the forcing part is used for receiving the forcing force of the cartridge so as to enable the developing roller to be in close contact with the photosensitive drum; the matching part is used for receiving the separating force transmitted by the force application part, so that the collecting piece moves, and then the developing device is driven to move in a direction away from the photosensitive drum, and the developing roller is separated from the photosensitive drum. The scheme of the utility model simplifies the installation matching relation and the number of parts of the developing device, so that the production process is simpler and the production efficiency is higher when the developing device is produced and manufactured.

Description

Developing device

Technical Field

The utility model relates to the technical field of electronic imaging devices, in particular to a developing device.

Background

The developing cartridge is a detachable part widely used in an electronic image forming apparatus. The electronic image forming apparatus needs to be replaced with a new developing cartridge after the printing consumables are consumed. The developing cartridge can be mounted to a cartridge in an electronic image forming apparatus that needs to separate the photosensitive drum from the developing roller to avoid the developing roller from remaining in contact with the photosensitive drum when there is no print job. When there is a print job, the electronic image forming apparatus needs to ensure close contact between the developing roller and the photosensitive drum. It is therefore necessary to provide a push member on the cartridge and a pushed member on the developing cartridge. A separating force outputting member is provided in the electronic image forming apparatus, and a separating force receiving member is provided on the developing cartridge. The urging member and the urged member serve to maintain the developing roller and the photosensitive drum in close contact. The separation force outputting member and the separation force receiving member are for separating the developing roller and the photosensitive drum. In order to form a potential difference between the developing roller and the powder feeding roller, a conductive member is required to be arranged on the developing box so as to receive current transmitted by the electronic imaging device and guide the current to the developing roller, so that at least three parts of a forced pushing member, a separating force receiving member and the conductive member are required to be arranged on the developing box, the parts on the developing box are more, and the occupied space is large.

Disclosure of Invention

According to an aspect of the present utility model, there is provided a developing device detachably mountable to an electronic image forming apparatus including a drum cartridge including a drum frame and a photosensitive drum, the developing device comprising:

a cartridge body accommodating a developer therein, the cartridge body having a first end and a second end in a first direction and a third end and a fourth end in a second direction;

a developing roller rotatably supported at a third end of the cartridge body, the developing roller extending in a first direction;

the acting piece is movably arranged on the box body and comprises a stress part, a force application part and a collision part, wherein the stress part is used for receiving the separation force of the electronic imaging device, the force application part is used for transmitting the separation force, and when the acting piece receives the separation force to move, the collision part is contacted with the drum frame;

the collecting piece comprises a forcing part and a matching part, wherein the forcing part is used for receiving the forcing force of the box so as to enable the developing roller to be in close contact with the photosensitive drum; the matching part is used for receiving the separating force transmitted by the force application part, so that the collecting piece moves, and then the developing device is driven to move in a direction away from the photosensitive drum, so that the developing roller is separated from the photosensitive drum.

In some embodiments, the mating portion is a slot, one end of the slot is provided with a closing portion, and the closing portion is a protrusion; alternatively, the matching part is a blind hole; alternatively, the engaging portion is a protrusion protruding in the first direction.

In some embodiments, a surface of the engaging portion facing the direction of the developing roller is a first force receiving surface for receiving the separation force transmitted by the force applying portion.

In some embodiments, the first force bearing surface is a cambered surface or a planar surface.

In some embodiments, the acting element is rotatable relative to the case, and the rotation axis of the acting element does not pass through the projection of the interference portion in the first direction.

In some embodiments, the acting element comprises at least one translation element that moves linearly relative to the cartridge.

In some embodiments, the box body is provided with a sliding rail, and the acting piece is mounted on the sliding rail and can move along the sliding rail after receiving the separating force of the electronic imaging device.

In some embodiments, the manifold is coupled to the developer roller, the manifold is made of a conductive material, and the manifold receives power from the electronic imaging device and transfers the power to the developer roller.

In some embodiments, the collecting member includes a first conductive member and a second conductive member, the first conductive member is connected to the developing roller and fixedly disposed on the box body, and the second conductive member is movably connected to the first conductive member and is capable of moving relative to the first conductive member.

In some embodiments, one of the first conductive members is provided with a guide hole, and the other is provided with a guide post matched with the guide hole, and the guide post is inserted into the guide hole and can relatively move in the guide hole.

In some embodiments, a second elastic member is disposed between the first conductive member and the second conductive member.

In some embodiments, the assembly includes a guide portion that contacts the drum frame during installation of the developing device to guide the installation of the developing device.

In some embodiments, the mating portion is closer to the developer roller than the urging portion, and the guide portion is closer to the developer roller than the urging portion.

The utility model provides another developing device which is detachably arranged on an electronic imaging device comprising a box, wherein the box comprises a drum frame, a photosensitive drum and an acting piece, the acting piece comprises a force bearing part, a force application part and a collision part, the force bearing part is used for receiving the separating force of the electronic imaging device, the force application part is used for transmitting the separating force, and the collision part is contacted with the drum frame when the acting piece receives the separating force to move; the developing device includes:

the collecting piece comprises a forcing part and a matching part, wherein the forcing part is used for receiving the forcing force of the box so as to enable the developing roller to be in close contact with the photosensitive drum; the matching part is used for receiving the separating force transmitted by the force application part, so that the collecting piece moves, and then the developing device is driven to move in a direction away from the photosensitive drum, so that the developing roller is separated from the photosensitive drum;

the matching part is a groove, one end of the groove is provided with a sealing part, and the sealing part is a bulge.

The utility model has the beneficial effects that: by adopting the technical scheme of the utility model, the structure for realizing the functions of contacting or separating the developing roller from the photosensitive drum, providing power for the developing roller, guiding the developing device to be installed and the like is integrated into the collecting piece, so that the installation matching relation and the number of parts of the developing device are simplified, the production process is simpler, the production efficiency is higher, the time and economic cost is reduced, and greater economic benefit is created when the developing device is produced and manufactured.

Drawings

Fig. 1 is a schematic perspective view of a developing device according to a first embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a developing device according to another embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a developing device and a drum cartridge according to an embodiment of the present utility model;

FIG. 4 is an exploded perspective view of a first end of a developing device according to an embodiment of the present utility model;

fig. 5 is a schematic perspective view of a first translation member according to an embodiment of the present utility model;

fig. 6 is a schematic perspective view of a second translation member according to an embodiment of the present utility model;

fig. 7 is a schematic perspective view showing the relative positions of the developing device and the guide member of the drum cartridge during the process of mounting the developing device on the drum cartridge or during the process of removing the developing device from the drum cartridge according to the first embodiment of the present utility model;

FIG. 8 is a schematic cross-sectional view showing the relative positions of the developing device and the guide member of the drum cartridge after the process of mounting the developing device in the drum cartridge according to the first embodiment of the present utility model is completed;

FIG. 9 is a schematic cross-sectional view showing the relative positions of the developing device and the guide member of the drum cartridge when the developing device of the first embodiment of the present utility model is in a separation operation;

fig. 10 is an exploded perspective view of a first end of a developing device according to a second embodiment of the present utility model;

FIG. 11 is a schematic cross-sectional view showing the relative positions of the developing device and the guide member of the drum cartridge after the process of mounting the developing device in the drum cartridge according to the second embodiment of the present utility model is completed;

FIG. 12 is a schematic cross-sectional view showing the relative positions of the developing device and the guide member of the drum cartridge when the developing device of the second embodiment of the present utility model is in a separated operation;

fig. 13 is an exploded perspective view of a first end of a developing device according to a third embodiment of the present utility model;

fig. 14 is a schematic perspective view of a translation member of a developing device according to a third embodiment of the present utility model;

FIG. 15 is a schematic cross-sectional view showing the relative positions of the developing device and the guide member of the drum cartridge after the process of mounting the developing device in the drum cartridge according to the third embodiment of the present utility model is completed;

FIG. 16 is a schematic cross-sectional view showing the relative positions of the developing device and the guide member of the drum cartridge when the developing device of the third embodiment of the present utility model is in a separated operation;

fig. 17 is a schematic structural view of a developing device according to a fourth embodiment of the present utility model mounted at a first end of a rear case of the case;

fig. 18 is a schematic perspective view of a first conductive member according to a fourth embodiment of the present utility model;

fig. 19 is a schematic perspective view of a second conductive member according to a fourth embodiment of the present utility model;

fig. 20 is a schematic view of a structure of a first end of a casing after a developing device is mounted to a casing in a fifth embodiment of the present utility model;

FIG. 21 is a schematic perspective view of a first assembly according to a fifth embodiment of the present utility model;

FIG. 22 is a schematic perspective view of a first collecting member and an acting member according to a sixth embodiment of the present utility model;

FIG. 23 is a schematic perspective view of a first collecting member and an acting member according to a seventh embodiment of the present utility model;

fig. 24 is a perspective view of a developing device according to an eighth embodiment of the present utility model separated from a drum cartridge;

FIG. 25 is a perspective view of a first manifold of an eighth embodiment of the utility model;

FIG. 26 is a perspective view of an active member of an eighth embodiment of the present utility model;

FIG. 27 is a schematic view showing a partial structure of a developing device and a drum cartridge according to an eighth embodiment of the present utility model when the developing device and the drum cartridge have not been completely mounted in position;

Fig. 28 is a schematic structural view of a developing device and a drum cartridge according to the eighth embodiment of the present utility model when fully mounted in position;

fig. 29 is a schematic view showing a structure in which a developing roller and a photosensitive drum are separated in accordance with the eighth embodiment of the present utility model.

Detailed Description

The present utility model will now be described in further detail with reference to the accompanying drawings, wherein the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either fixedly attached, detachably attached, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the above description, descriptions of the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Example 1

Fig. 1 is a schematic perspective view of a developing device according to a first embodiment of the present utility model; FIG. 2 is a schematic perspective view of a developing device according to another embodiment of the present utility model; FIG. 3 is a schematic perspective view of a developing device and a drum cartridge according to an embodiment of the present utility model; as shown in fig. 1 and 2, the developing device 1 includes a cartridge 10, a developing roller 20, a powder feeding roller (not shown), a stirring member (not shown), a driving end cover 30, a transmission assembly 40, a chip 50, a collecting member, an acting member, the collecting member including a first collecting member 60 and a second collecting member 70; as shown in fig. 3, the developing device 1 is detachably mounted to a drum cartridge 2, and the developing device 1 and the drum cartridge 2 are used in an electrophotographic apparatus, specifically, the drum cartridge 2 includes a drum frame 91, a photosensitive drum 92, a first guide surface 93 (shown in fig. 7), a second guide surface 94 (shown in fig. 7), a first pressing member 95, and a first spring 96.

As shown in fig. 1 and 2, the cartridge 10 is configured to accommodate developer, the cartridge 10 has a first end 11 and a second end 12 opposite to each other in a first direction, the first collecting member 60 and the acting member 110 are located at the first end 11 of the cartridge 10, the second collecting member 70 is located at the second end 12 of the cartridge 10, the developing device 1 is further provided with another acting member, and the other acting member and the second collecting member 70 are located at the same end of the cartridge 10; the cartridge 10 has a third end and a fourth end in the second direction, wherein the third end is also the front end of the cartridge 10, the fourth end is the rear end of the cartridge 10, the cartridge 10 is provided with an opening at the third end, and the external space of the cartridge 10 is communicated with the developer accommodating chamber of the cartridge 10 through the opening; the fourth end is provided with a handle. In addition, the third direction intersects with the first direction and the second direction, and the case 10 has a fifth end and a sixth end in the third direction, wherein the fifth end is also an upper end of the case 10, and the sixth end is a lower end of the case 10.

The developing roller 20 is rotatably installed at the opening position near the third end of the cartridge body 10, the developing roller 20 extends in the first direction, the developing roller 20 includes a developing roller main body 21 and a developing roller shaft 22, and the developing roller 20 is rotatable about a developing roller shaft line extending in the first direction. The toner feeding roller is for feeding the developer contained in the cartridge 10 to the developing roller 20, and the stirring member is for stirring the developer to prevent caking thereof, and feeding the developer to the toner feeding roller.

As shown in fig. 1 and 2, a transmission assembly 40 is disposed at the second end 12 of the casing 10, and is configured to receive a driving force from the electrophotographic apparatus and transmit the driving force to other components of the developing apparatus 1, and the transmission assembly 40 includes a coupling 41, a coupling gear 42, a developing gear 43, a powder feeding gear (not shown), and a stirring gear (not shown). The drive end cover 30 is also positioned at the second end 12 of the housing 10 and is configured to support and protect the drive assembly 40, with the drive end cover 30 at least partially exposing the drive assembly 40; wherein, the drive end protecting cover 30 is provided with a through hole, the coupler 41 is provided with a concave part in the first direction, the coupler 41 is exposed through the through hole, so that the concave part is matched with a driving device in the electronic imaging device to receive the driving force from the electronic imaging device. The drive end cover 30 and the cartridge body 10 together constitute an integral casing of the developing device 1. The drive end cap 30 is mounted to the second end of the housing 10 by, for example, screw fastening, snap fitting, or the like.

The coupling gear 42 is closer to the second end 12 of the cartridge 10 than the coupling 41 in the first direction, the coupling gear 42 transmitting the driving force received from the electrophotographic apparatus to other members of the developing apparatus 1, the coupling 41 being rotatable about a first axis extending in the first direction. The developing gear 43 is attached to one end of the developing roller 20 in the first direction, is engaged with the coupling gear 42, receives a driving force from the coupling 41, and is extendable along a second axis (developing roller axis) extending along the first direction together with the developing roller 20. The powder feeding gear is positioned at one end of the powder feeding roller in the first direction, is meshed with the coupler gear 42, receives the driving force from the coupler 41, and can rotate along with the powder feeding roller around a third axis extending along the first direction; the stirring gear is located at one end of the stirring element in the first direction and also receives a driving force from the coupling 41, and is rotatable together with the stirring element about a fourth axis extending in the first direction.

As shown in fig. 1 and 2, the second end 12 of the box body 10 may also be provided with a chip 50, where the chip 50 stores information of the developing device and may be electrically connected with the electronic imaging device, so as to realize electrical connection of information such as identification and data exchange between the developing device 1 and the electronic imaging device. The chip 50 is disposed on a side of the cartridge 10 (where the cartridge includes the drive end cap 30) that is adjacent to the drive assembly 40 in a first direction and at an end that is remote from the developer roller 20 in a second direction. Preferably, the chip 50 is mounted by a bracket that is removably mounted to the drive end cover 30 and the chip 50 is removably mounted to the bracket 51.

When the developing device 1 receives the driving force, the developer is supplied from the inner chamber of the cartridge 10 to the outer peripheral surface of the developing roller main body 21 via the toner feeding roller. At this time, the developer is triboelectrically charged between the toner feed roller and the developing roller main body 21. Further, a bias voltage is applied to the developing roller shaft 22 of the developing roller 20. Therefore, the developer is attracted to the outer peripheral surface of the developing roller body 21 by the electrostatic force between the developing roller shaft and the developer.

As shown in fig. 1 and 2, in the present embodiment, the collecting member includes a first collecting member 60 and a second collecting member 70, the first collecting member 60 is disposed at the first end 11 of the case 10, the second collecting member is disposed at the second end 12 of the case 10, and the first collecting member 60 can be regarded as an electrically conductive electrode, for example, the first collecting member 60 is made of conductive resin.

As shown in fig. 4 and 7, the first collecting member 60 is located at the first end 11 of the cartridge body 10, the first collecting member 60 is rotatably mounted to the other end of the developing roller shaft 22 in the first direction, and the first collecting member 60 may support the developing roller shaft 22 or may be in contact with only the developing roller shaft 22 but not supported. The first collecting member 60 has a first end 61, a second end 62, the first collecting member 60 extending in the second direction between the first end 61 and the second end 62, the second end 62 being further from the developing roller 20 than the first end 61, and the second end 62 being further from the third end of the cartridge 10 than the first end 61. During the mounting of the developing device 1 to the drum cartridge, the first end portion 61 is in contact with the drum frame 91 and plays a guiding mounting role for the developing device 1 so that the developing device 1 is smoothly mounted to the drum cartridge, i.e., in the present embodiment, the first end portion 61 can be regarded as a guiding portion. The second end portion 62 may be used as a pushing portion to receive the pushing force applied by the drum cartridge 2, so that the developing roller 20 and the photosensitive drum 92 are in close contact, more specifically, an end surface of the second end portion 62 away from the developing roller 20 is a second stress surface 621, and the second stress surface 621 receives the pushing force of the first pressing member 95 and the first spring 96, where in this embodiment, the second stress surface 621 may be an arc surface or a plane.

The first manifold 60 further includes a first arm 63 and a second arm 64, the second arm 64 being further from the developer roller 20 than the first arm, and the second arm 64 being further from the third end of the cartridge 10 than the first arm 62; in the present embodiment, the first end portion 61 is integrally formed with the second end portion 62. However, the first end portion 61 and the second end portion 62 may be a separate structure, and in this case, the first end portion 61 and the second end portion 62 may be fixed and connected to each other.

The first manifold 60 further includes a first insertion hole 65, the first insertion hole 65 extending in a first direction in the first end 61 of the first manifold 60. The first insertion hole 65 may be a through hole passing through the first end portion 61 in the first direction, and the first insertion hole 65 may also be a blind hole not passing through the first end portion 61, and an end portion of the developing roller shaft 22 in the first direction is inserted into the first insertion hole 65. The first collecting member 60 is rotatable about the developing roller shaft 22 with respect to the cartridge body 10. More specifically, the second end 62 is pivotable relative to the first end 61 about the rotational axis of the developer roller 20.

The first collecting member 60 serves as a conductive member, and is electrically connected to the developing roller 20, and thus may also be referred to as a developing electrode. The first collecting member 60 may be made of a conductive material such as a conductive resin, a metal, or the like, without being particularly limited thereto.

The first collecting member 60 further has a mating portion 66, the mating portion 66 is disposed on the second arm 64, and in this embodiment, the mating portion 66 is a first hole. The engaging portion 66 is located between the first end portion 61 and the second end portion 62 in the second direction, and an inner surface of the engaging portion 66 facing the direction of the developing roller 20 is a first force receiving surface 662 for receiving the separating force transmitted from the force applying portion 112 of the acting member 110. The fitting portion 66 (first hole) may not necessarily completely penetrate the first collecting member 60, and in the third direction, an upper end of the fitting portion 66 penetrates the first collecting member 60, and a lower end of the fitting portion 66 may or may not penetrate the first collecting member 60. In the present embodiment, the structure of the engaging portion 66 is similar to a rectangular structure, and alternatively, the shape of the engaging portion 66 may be a regular polygonal structure or an irregular shaped structure, which is not particularly limited.

As shown in fig. 4, the acting element 110 is disposed at the first end 11 of the box 10, and the acting element includes a first translational element 130 and a second translational element 140, where the first translational element 130 and the second translational element 140 are movable relative to the box 10. The first end 11 of the box 10 further has a first sliding rail 15 and a second sliding rail 16. In the present embodiment, the first slide rail 15 extends in the second direction, and alternatively, the first slide rail 15 may be disposed in a direction not parallel to the second direction. The second slide rail 16 forms an angle with the first slide rail 15. In the present embodiment, the angle formed by the first slide rail 15 and the second slide rail 16 is an acute angle. The first translation member 130 is installed at the position of the first sliding rail 15, the second translation member 140 is installed at the position of the second sliding rail 16, the first translation member 130 is movable relative to the first sliding rail 15, the second translation member 140 is movable relative to the second sliding rail 16, that is, the first translation member 130 and the second translation member 140 are movable relative to the box body 10, and the movement mode is linear movement. Alternatively, the movement mode may be a curved movement. In other embodiments, the first sliding rail 15 and the second sliding rail 16 may be configured as a communicated U-shaped or V-shaped sliding rail, and a translational member is installed in the sliding rail, and the translational member moves along the sliding rail when stressed, and may move in a curved or linear manner.

As shown in fig. 5, the first translation member 130 is a block member, the first translation member 130 includes a third stress surface 131, a third force application surface 132, and a first mounting portion 133, and the third stress surface 131 and the third force application surface 132 are respectively located at two ends of the first translation member 130 in the second direction; as shown in fig. 6, the second translation member 140 is a rod-shaped member, the second translation member 140 includes a fourth stress surface 141, a force application portion 112, a collision portion and a second mounting portion 143, the fourth stress surface 141 and the force application portion 112 are respectively located at two ends of the second translation member 140 in the third direction, the collision portion is a surface on the second translation member 140, specifically may be an arc-shaped cam surface 113, and the cam surface 113 and the fourth stress surface 141 are respectively located at different sides of the second translation member 140. In this embodiment, the third force application surface 132 and the four force receiving surfaces 141 are inclined surfaces or arc surfaces, and the force is transferred by the contact between the inclined surfaces and the inclined surfaces, the contact between the inclined surfaces and the arc surfaces, or the contact between the arc surfaces and the arc surfaces. In the present embodiment, the third force receiving surface 131 of the first translation member 130 for receiving the external force is a force receiving portion of the acting member, and the second translation member 140 is a force applying portion 112 of the acting member for transmitting the external force to the first collecting member 60. In the present embodiment, the first mounting portion 133 is disposed on the surface of the first translation member 130 facing the box body 10, the second mounting portion 143 is disposed on the surface of the second translation member 140 facing the box body 10, the first mounting portion 133 and the second mounting portion 143 are both T-shaped, and the corresponding mounting positions of the first slide rail 15 and the second slide rail 16 are inverted T-shaped, so that the first slide rail 15 allows the first translation member 130 to move relative to the box body 10, and prevents the first translation member 130 from falling off from the first slide rail 15; likewise, the second slide rail 16 allows the second translation member 140 to be movable along the second slide rail 16 relative to the case 10, and prevents the second translation member 140 from falling off the second slide rail 16. Alternatively, the first mounting portion 133 and the second mounting portion 143 may be configured in other shapes, for example, rectangular, where the first sliding rail 15 and the second sliding rail 16 are configured in corresponding shapes, and where, to prevent the first translation member 130 and the second translation member 140 from falling off from the case 10, fixing members may be further disposed at positions farther from the case 10 than the first translation member and the second translation member.

As shown in fig. 5 to 7, the third stress surface 131 is configured to receive a separating force from the electronic imaging device, so that the first translation member 130 moves along the extending direction of the first sliding rail 15; in the third direction, the first translation member 130 is at least partially located above the second translation member 140, so that the third force application surface 132 contacts the fourth force application surface 141, and when the first translation member 130 is forced to move, the fourth force application surface 141 receives the separating force from the first force application surface 143, so that the second translation member 140 moves along the extending direction of the second sliding rail 16. The force application portion 112 is disposed in the mating portion 66, and the force application portion 112 abuts against a first force receiving surface 662 (shown in fig. 8) of the mating portion 66, so that the second translation member 140 drives the first collecting member 60 to perform a swinging motion or a linear motion during the motion, thereby moving the developing device 1.

The second manifold 70 is located at the second end 12 of the cartridge 10, and the first manifold 60 and the second manifold 70 are positioned to overlap one another as viewed in the first direction. The second assembly rotatably supports the other end of the developing roller shaft 22. The other structures of the second end 12 are similar to those of the first end 11, and the description thereof will be omitted. In other embodiments, the first manifold 60 and the second manifold may not be positioned to overlap each other as seen in the first direction, or only one manifold may be provided.

As shown in fig. 7, during mounting of the developing device 1 to the drum cartridge 2 and during removal of the developing device 1 from the drum cartridge 2, the developing device 1 is moved relative to the drum cartridge 2 so that the developing roller 20 is moved closer to the photosensitive drum 92 or farther from the photosensitive drum 92. The guiding action of the first guide surface 93, the second guide surface 94 on the first end portion 61 and the guiding action of the third guide surface, the fourth guide surface on the second collecting member 70 place the first collecting member 60 between the photosensitive drum 92 and the first pressing member 95 or remove from between them, and the second collecting member 70 is placed between the photosensitive drum 92 and the second pressing member or remove from between them.

As shown in fig. 8, when the developing device 1 is mounted to the drum cartridge 2, the first pressing member 95 presses the developing device 1 against the photosensitive drum 92 through the second end 62 (the second receiving surface 621) of the first collecting member 60 (Zhang Lijing) of the first spring 96, that is, the second end 62 is a pressing portion for receiving the pressing force applied by the drum cartridge 2 in this embodiment, so that the developing roller 20 is brought into close contact with the photosensitive drum 92. The first end portion 61 of the first collecting member 60 contacts with the first guide surface 93 and plays a role in guiding the installation of the developing device 1, and the other portion of the first collecting member 60 contacts with the second guide surface 94. Thus, the position of the first collecting member 60 with respect to the drum frame 91 is fixed; likewise, the position of the second manifold 70 relative to the drum frame 91 is also fixed. At this time, the first pressing member 95 presses the first collecting member 60, and the second pressing member presses the second collecting member 70, and the outer circumferential surface of the developing roller 20 contacts the outer circumferential surface of the photosensitive drum 92. The force application portion 112 of the second translation member 140 is engaged with the first force receiving surface 662 of the mating portion 66, specifically, in this embodiment, the force application portion 112 and the first force receiving surface 662 face each other in the second direction, and optionally, the size of the force application portion 112 may be enlarged, so that the force application portion 112 is engaged with the first force receiving surface 662 in both the second direction and the third direction, so that the force transmission process is more stable during operation.

When the developing device 1 mounted on the drum cartridge 2 shown in fig. 8 is mounted in an electronic imaging device, the electrodes on the drum cartridge 2 are in contact with the electrode terminals in the electronic imaging device, and since the first spring 96, the first pressing member 95, and the first collecting member 60 are made of conductive materials, the power of the electronic imaging device is supplied to the developing roller shaft 22 via the electrodes, the first spring 96, the first pressing member 95, and the first collecting member 60.

As shown in fig. 9, when the developing roller 20 and the photosensitive drum 92 need to be temporarily separated during printing, the electronic imaging device applies a separating force F to the third force-receiving surface 131, so that the first translation member 130 moves in a translational manner, and at this time, the third force-receiving surface 132 applies a separating force to the fourth force-receiving surface 141, so that the second translation member 140 moves in a translational manner in another direction at an angle to the first translation member 130, so that the cam surface 113 of the second translation member 140 abuts against the drum frame 91 of the drum cartridge 2, and the force-applying portion 112 applies a separating force to the first force-receiving surface 662 of the mating portion 66, and the first collecting member 60 moves in a direction away from the photosensitive drum 92 under the force. The first pressing member 95 is thereby pressed, and the first spring 96 is compressed, and the first collecting member 60 moves in a direction in which the track formed between the first guide surface 93 and the second guide surface 94 is away from the photosensitive drum 92, and thereby drives the cartridge 10 to move together, so that the developing device 1 and the drum cartridge 2 are spaced in the second direction, specifically, so that the developing roller 20 and the photosensitive drum 92 are not contacted, with a space therebetween.

In this embodiment, the first collecting member 60 may be used for rotatably supporting the developing roller 20, positioning the developing roller 20, and providing a bias voltage for the developing roller 20, so that the component structure of the developing device 1 is simplified, and the assembly process is simplified during the manufacturing process, which is beneficial to improving the production efficiency, thereby reducing the production time and economic cost and creating greater economic benefits. In addition, in the present embodiment, the movement tracks of the first translation member 130 and the second translation member 140 are both guided and defined by the first slide rail 15 and the second slide rail 16, so that the force transmission effect between the components of the developing device 1 is more stable during the working process.

Example two

The present embodiment provides a developing device, which is different from the first embodiment in that: the structure of the acting element is different.

As shown in fig. 10, the first end 11 of the case 10 has an acting element 110 and a third slide rail 17. The acting element 110 includes a force receiving portion 111, a force applying portion 112, an abutting portion (cam surface 113), and a protruding portion 114. The force receiving portion 111 is located at one end (specifically, an upper end) of the acting element in the third direction, and the urging portion 112 is located at the other end (specifically, a lower end) of the acting element opposite to the force receiving portion 111 in the third direction; the cam surface 113 is located between the force receiving portion 111 and the force applying portion 112 in the third direction, and the cam surface 113 is closer to the developing roller 20 than the force receiving portion 111 and the force applying portion 112 in the second direction; the protrusion 114 is also located at one end of the acting element 110 in the third direction (the same end as the force receiving portion 111), the protrusion 114 is located closer to the case 10 than the force receiving portion 111 in the first direction, and the protrusion 114 is formed such that the closer the protrusion 114 is to the second end in the first direction, the larger the size of the portion. The third slide rail 17 is for accommodating the protrusion 114 and allowing the protrusion 114 to move linearly in the extending direction thereof, so that the inner shape of the third slide rail 17 is set according to the shape of the protrusion 114. In the present embodiment, the protrusion 114 is formed in a truncated cone shape, so that the inner surface of the third slide rail 17 forms an arc surface. The third sliding rail 17 is a circular arc track, the acting element 110 rotates along the third sliding rail 17 relative to the box body 10, and the rotation center of the acting element 110 is the circle center position of the circular arc track, that is, the rotation axis of the acting element 110 does not pass through the projection of the abutting part along the first direction.

The acting element 110 is movable relative to the cartridge 10. When the developing device 1 is mounted on the drum cartridge 2, the cam surface 113 is in contact with the drum frame 91 (shown in fig. 11) of the drum cartridge 2 so as to be supported by the drum frame 91. The acting element 110 is pivotable about the cam surface 113 or a point near the cam surface 113 between a first position and a second position. At this time, the protrusion 114 is accommodated in the third slide rail 17, and the movement track of the protrusion 114 is the extending track of the third slide rail 17 when the acting element 110 performs the pivoting movement. And the protrusion 114 is accommodated in the third sliding rail 17, so that the protrusion can be used for positioning and fixing the acting element, and the acting element 110 is prevented from falling off the box body 10.

As shown in fig. 11, when the developing device 1 is mounted to the drum cartridge 2, the first pressing member 95 presses the developing device 1 against the photosensitive drum 92 through the second end 62 of the first collecting member 60 of the Zhang Lijing of the first spring 96. The first end 61 of the first collection member 60 is in contact with the first guide surface 93 and another portion of the first collection member 60 is in contact with the second guide surface 94. Thus, the position of the first collecting member 60 with respect to the drum frame 91 is fixed; likewise, the position of the second manifold 70 relative to the drum frame 91 is also fixed. At this time, the first pressing member 95 presses the first collecting member 60, and the second pressing member presses the second collecting member 70, and the outer circumferential surface of the developing roller 20 contacts the outer circumferential surface of the photosensitive drum 92. At this time, the force receiving portion 111 of the acting element 110 is located between both end portions of the third slide rail 17 in the second direction.

When the developing device 1 mounted on the drum cartridge 2 shown in fig. 11 is mounted in an electronic imaging device, the electrodes on the drum cartridge 2 are in contact with the electrode terminals in the electronic imaging device, and since the first spring 96, the first pressing member 95, and the first collecting member 60 are made of conductive materials, the power of the electronic imaging device is supplied to the developing roller shaft 22 via the electrodes, the first spring 96, the first pressing member 95, and the first collecting member 60.

As shown in fig. 12, when it is necessary to temporarily separate the developing roller 20 from the photosensitive drum 92 during printing, the electrophotographic apparatus applies a force F to the force receiving portion 111 (shown in fig. 10) of the acting member 110, the force F presses the force receiving portion 111 of the acting member 110, the acting member 110 surrounds the cam surface 113 (shown in fig. 10), and the protrusion 114 (shown in fig. 10) moves along the third slide rail 17, so that the acting member 110 pivots from the first position to the second position. At this time, the urging portion 112 at the other end of the urging member 110 urges the first urging surface 662 of the engaging portion 66 (first hole), and the first collecting member 60 moves in a direction away from the photosensitive drum 92 under the urging force. The first pressing member 95 is thereby pressed, and the first spring 96 is thereby compressed, and the first collecting member 60 moves in a direction in which the track formed between the first guide surface 93 and the second guide surface 94 is away from the photosensitive drum 92, and thereby drives the cartridge 10 and the developing roller 20 away from the photosensitive drum 92.

Other structures and operation manners of the present embodiment are the same as those of the first embodiment, and will not be described herein.

Example III

The present embodiment discloses a developing device, which is different from the first embodiment in that: the structure of the acting element is different.

As shown in fig. 13 and 14, the acting element of the present embodiment has only the second translation element 140, and the first end 11 of the box 10 has only the second translation element 140 and the second sliding rail 16, where the second translation element 140 is mounted in the second sliding rail 16, and the second translation element 140 can move along the second sliding rail 16. The second translation member 140 includes a force receiving portion 111, a force applying portion 112, a contact portion (support surface 113 a), and a second mounting portion 143. The force receiving portion 111 is located at one end (specifically, an upper end) of the second translational member 140 in the third direction, the force applying portion 112 is located at the other end (specifically, a lower end) of the second translational member 140 in the third direction, the supporting surface 113a is located at one end of the second translational member 140 near the third end of the case 10 in the second direction, and between the force receiving portion 111 and the force applying portion 112 in the third direction, and the supporting surface 113a is preferably a plane. The second slide rail 16 is disposed in an angular direction relative to the second direction.

As shown in fig. 15, when the developing device 1 is mounted to the drum cartridge 2, the urging portion 112 contacts the top of the first urging surface 662 of the engagement portion 66 (first hole) near the fourth end of the cartridge body 10, and the supporting surface 113a contacts the drum cartridge 2. At this time, the first presser 95 presses the developing device 1 against the photosensitive drum 92 through the second end 62 (the second force receiving surface 621) of the first collecting member 60 by the Zhang Lijing of the first spring 96. The first end 61 of the first collection member 60 is in contact with the first guide surface 93 and another portion of the first collection member 60 is in contact with the second guide surface 94. Thus, the position of the first collecting member 60 with respect to the drum frame 91 is fixed; likewise, the position of the second manifold 70 relative to the drum frame 91 is also fixed. At this time, the first pressing member 95 presses the first collecting member 60, and the second pressing member presses the second collecting member 70, and the outer circumferential surface of the developing roller 20 contacts the outer circumferential surface of the photosensitive drum 92.

When the developing device 1 mounted on the drum cartridge 2 shown in fig. 15 is mounted in an electronic imaging device, the electrodes on the drum cartridge 2 are in contact with the electrode terminals in the electronic imaging device, and since the first spring 96, the first pressing member 95, and the first collecting member 60 are made of conductive materials, the power of the electronic imaging device is supplied to the developing roller shaft 22 via the electrodes, the first spring 96, the first pressing member 95, and the first collecting member 60.

As shown in fig. 16, when the developing roller 20 and the photosensitive drum 92 need to be temporarily separated during printing, the electronic imaging device applies a force F to the force receiving portion 111, and at this time, the second translation member 140 presses the drum frame of the drum box 2, and the drum frame 91 of the drum box 2 supports the second translation member 140 through the supporting surface 113a, so as to avoid that the second translation member 140 is forced to drive the box body 10 to move in a direction approaching to the photosensitive drum 92 of the drum box 2. At this time, the second mounting portion 143 is forced to move along the extending direction of the second slide rail 16 near the first collecting member 60. The urging portion 112 urges the first urging surface 662 of the first hole, and the first collecting member 60 urges the first pressing member 95 in a direction away from the photosensitive drum. At this time, due to the guiding action of the first guiding surface 93 and the second guiding surface 94, the first collecting member 60 may rotate to some extent about the axis of the developing roller shaft 22, or the first collecting member 60 may move in the second direction along the pressing force toward the axis direction away from the developing roller shaft 22, and the first collecting member 60 may further move away from the photosensitive drum 92, and further drive the cartridge 10 to move together, so that the developing roller 20 is away from the photosensitive drum 92.

Alternatively, in order to facilitate the return of the second translation member 140 to the unpressurized position after the developing device 1 has lost the force F, a spring member may be added between the second translation member and the second slide rail.

Example IV

The present embodiment provides a developing device different from the first to third embodiments in the structure of the collecting member.

In this embodiment, the collecting member includes a first collecting member disposed at the first end 11 of the case 10 and a second collecting member disposed at the second end 12 of the case 10, and the first collecting member can be regarded as an electrically conductive electrode.

As shown in fig. 17 to 19, the first aggregate includes a first conductive member 6a, a second conductive member 6b. The first collecting member is arranged at the first end 11 of the box body 10. The length direction of the first collecting piece is a fourth direction, the thickness direction of the first collecting piece is a fifth direction, and the width direction of the first collecting piece is parallel to the first direction.

As shown in fig. 17 and 18, the first conductive member 6a is fixedly mounted on the first end 11 of the case 10, and the first conductive member 6a is a block member. The first conductive member 6a is provided with a first insertion hole 65, and the first insertion hole 65 extends in the first direction. One end of the developing roller 20 near the first end 11 of the cartridge body 10 is inserted into the first insertion hole 65 and is electrically connected to the first conductive member 6 a. Alternatively, a conductive intermediate member may be added between the first conductive member 6a and the developing roller 20, and the conductive intermediate member is electrically connected to the first conductive member 6a and the developing roller 20, thereby reducing abrasion of the first conductive member 6a due to rotation of the developing roller 20.

As shown in fig. 18 and 19, the first conductive member 6a is integrally formed with a first guide projection 6a1 extending in the fourth direction at an end thereof remote from the developing roller 20, and the first guide portion is provided with a guide hole 6a2 in the fifth direction. The second conductive member 6b is located at a side of the first conductive member 6a away from the developing roller 20 in the second direction, and a second guide protrusion 6b1 extending in the fourth direction is integrally formed at an end of the second conductive member 6b close to the first conductive member 6a, and a guide post 6b2 extending in the fifth direction is integrally formed on the second guide protrusion 6b 1. The guide post 6b2 and the guide hole 6a2 are coaxially arranged, the guide post 6b2 is inserted into the guide hole 6a2 and can slide in the guide hole 6a2 relative to the guide hole 6a2, one end of the guide post 6b2 is connected with the second guide protrusion 6b1, the other end of the guide post 6b2 is integrally formed with the limit claw 6b3, the limit claw 6b3 is clamped on the upper surface of the guide hole 6a2, and the limit claw 6b3 is used for preventing the guide post 6b2 from being separated from the guide hole 6a2. A second elastic member 6c is installed between the first guide protrusion 6a1 and the second guide protrusion 6b1, the second elastic member 6c is sleeved on the guide post 6b2, and the second elastic member 6c may be a spring or other elastic materials. The first conductive member 6a and the second conductive member 6b are each made of a conductive material such as a conductive metal, a conductive resin, or the like. The first conductive member 6a and the second conductive member 6b are electrically connected.

As shown in fig. 17 to 19, a fixing member 120 is further mounted on the first end 11 of the case 10, the fixing member 120 is located on the case 10 above the first collecting member, an acting member 110 extending in the fifth direction is mounted on the fixing member 120, the acting member 110 has a force receiving portion 111 and a force applying portion 112 in the fifth direction, and a cam surface 113 (abutting portion) is further provided on the acting member 110 between the force receiving portion 111 and the force applying portion 112, and the cam surface 113 is used as a rotation center when the acting member 110 swings. The second conductive member 6b is provided with a matching portion 66 along the fifth direction, the matching portion 66 is a first hole, the first hole is a blind hole, one end of the first hole in the fifth direction is closed, specifically, one end close to the sixth end of the box body 100 is closed, the force receiving portion 111 of the acting member 110 is located above the first collecting member, and the force applying portion 112 of the acting member 110 extends into the matching portion 66. The inner surface of the engaging portion 66 on the side away from the developing roller 20 in the fourth direction is a first force receiving surface 662. The first force receiving surface 662 is configured to receive the separation force applied by the force applying portion 112 of the acting member 110. The second conductive member 6b has a second stress surface 621 at an end thereof remote from the developing roller 20 in the fourth direction. The second stress surface 621 is used for bearing the urging force exerted by the first pressing piece 95 on the box 2.

As shown in fig. 17 to 19, the following is the operation of the developing device disclosed in the present embodiment, first, the developing device is mounted to the box 2 in the electronic image forming apparatus. Since the second conductive member 6b can move relative to the first conductive member 6a, if the second conductive member 6b interferes with the box 2 during the installation process, the second elastic member 6c is compressed, so that the second conductive member 6b elastically contacts with the box 2, and the second conductive member 6b can elastically avoid interference with the box 2. And further ensures the smoothness of the developing device in the installation process. After the installation is completed, when the electronic imaging device receives a printing signal, the driving part receives power output by the electronic imaging device and drives the developing roller 20, the powder feeding roller and the stirring frame to rotate to start printing through the transmission component.

When printing is completed, the electronic image forming apparatus no longer outputs power, and thus the developing roller 20, the powder feeding roller, and the agitator stop rotating. At this time, the electrophotographic apparatus applies a separating force F1 to the force receiving portion 111 of the acting member 110, and the force receiving portion 111 of the acting member 110 swings around the cam surface 113 in a direction approaching the developing roller 20 due to the contact of the cam surface 113 with the cartridge 2. At the same time, the urging portion 112 of the urging member 110 swings about the cam surface 113 in a direction away from the developing roller 20, thereby applying the separating force F2 to the first urging surface 662 on the second conductive member 6b in a direction away from the developing roller 20. And the second conductive member 6b pulls the first conductive member 6a, and since the first conductive member 6a is fixed on the box body 10, the first conductive member 6a pulls the whole box body 10, so that the whole developing device moves in a direction away from the photosensitive drum, and further, the photosensitive drum is not contacted with the developing roller 20. Meanwhile, since the first spring 96 is installed between the first pressing piece 95 and the frame 31, the first pressing piece 95 is displaced by the separating force F2 and compresses the first spring 96, so the first pressing piece 95 does not block the movement of the second conductive member 6 b.

When the electronic image forming apparatus starts printing again, the electronic image forming apparatus outputs power to the power receiving portion 41, and the electronic image forming apparatus stops applying the separating force F1 to the force receiving portion 111 of the acting element 110, so the force applying portion 112 of the acting element 110 no longer applies the separating force F2 to the first pressing member 95. At this time, under the action of self gravity of the developing device, the developing device returns to the original position, so that the developing roller 20 is in contact with the photosensitive drum again, and meanwhile, under the action of elasticity of the elastic piece, the first pressing piece 95 applies a force pushing force close to the direction of the photosensitive drum to the second stress surface 621 on the second conductive piece 6b, so that the first collecting piece drives the developing device, and further the developing roller 20 is abutted against the photosensitive drum.

At the same time, the voltage output from the electronic imaging device is conducted to the first spring 96 and then to the second conductive member 6b via the first pressing member 95. The second conductive member 6b conducts voltage to the developing roller 20 through the first conductive member 6 a. Further, since the first spring 96 is provided, the first pressing member 95 and the second conductive member 6b are always kept in contact, thereby ensuring that the developing roller 20 is always provided with a voltage. And since the first conductive member 6a is fixed to the first end 11 of the casing 10, the rotation of the developing roller 20 is prevented from driving the first conductive member 6a to move. Thereby avoiding the problem of poor contact and unstable conduction caused by the movement of the first conductive member 6 a.

Through the design, the functions of the forced pushing component, the drum roller separating component and the electric receiving component on the existing developing device are integrated on the first collecting component, so that parts on the developing device are reduced, the production cost is reduced, the space occupation is reduced, and the miniaturization of the developing device is facilitated. Compared with the arrangement of the second conductive element 6b and the first conductive element 6a as a whole, the first conductive element 6a and the second conductive element 6b are arranged as separate bodies in the embodiment, so that the first conductive element 6a is fixed, and the second conductive element 6b can move relative to the box body 10, so that only a space is reserved for the movement range of the second conductive element 6b on the box body 10, and the movement of the second conductive element 6b is not interfered, thereby reducing the occupation of the space of the box body 10. The miniaturization of the developing device is facilitated.

Alternatively, the guide post may be configured to extend in the fourth direction, so that the second conductive member is elastically retracted under the action of the second elastic member when the second conductive member interferes with the cartridge 2 during the mounting of the developing device. The second conductive member may also be integrally provided as an elastic material such as an elastic steel sheet. Thereby realizing the elastic avoidance of the second conductive piece.

Example five

The present embodiment provides a developing device different from the first embodiment in the structure of the collecting member.

As shown in fig. 20 and 21, the first collecting member 60 is provided at the first end 11 of the case 10. The length direction of the first collecting member 60 is the fourth direction, the thickness direction of the first collecting member 60 is the fifth direction, and the width direction of the first collecting member 60 is parallel to the first direction.

As shown in fig. 20 and 21, the first collecting member 60 is provided with a first insertion hole 65, and the first insertion hole 65 extends in the first direction. One end of the developing roller 20 near the first end 11 of the cartridge 10 is inserted into the first insertion hole 65 and electrically connected to the first collecting member 60. The first manifold 60 is rotatably coupled to the developer roller 20. Alternatively, a conductive intermediate member may be added between the first collecting member 60 and the developing roller 20, and the conductive intermediate member is electrically connected to the first collecting member 60 and the developing roller 20, thereby reducing abrasion of the first collecting member 60 due to rotation of the developing roller 20. The first manifold 60 is made of a conductive material such as a conductive resin, a conductive metal, or the like.

As shown in fig. 20 and 21, the first collecting member 60 is integrally formed with a mating portion 66 extending in the first direction at a position near the second end portion 62, the mating portion 66 is a protrusion protruding in the first direction, the mating portion 66 is further from the developing roller 20 than the first insertion hole 65 in the fourth direction, the mating portion 66 has a first stress surface 662 provided toward the developing roller 20, and the first stress surface 662 may be a plane or an arc surface. The fourth direction passes through the first force bearing surface 662. The first collecting member 60 is provided with a second stress surface 621 at an end thereof remote from the developing roller 20 in the fourth direction, the second stress surface 621 being an arc surface. So as to ensure smoothness in the process of mounting the developing device on the cartridge and prevent the developing device from being blocked by the cartridge. Alternatively, the second stress surface 621 may be provided as a flat surface. The surface of the engaging portion 66 away from the developing roller 20 in the fourth direction and the end surface of the first collecting member 60 away from the developing roller 20 in the fourth direction together constitute a second stress surface 621.

As shown in fig. 20, a fixing member 120 is further mounted on the first end 11 of the case 10, the fixing member 120 is located on the case 10 above the conductive component, an acting member 110 extending in a fifth direction is mounted on the fixing member 120, the acting member 110 has a force receiving portion 111 and a force applying portion 112 in the fifth direction, and a cam surface 113 (an abutting portion) is further provided on the acting member 110 between the force receiving portion 111 and the force applying portion 112, and the cam surface 113 is used as a rotation center when the acting member 110 swings. The force receiving portion 111 of the acting element 110 is located above the conductive element, and the projection of the force applying portion 112 of the acting element 110 in the first direction coincides with the projection of the first collecting element 60 in the first direction, and the projection of the force applying portion 112 of the acting element 110 in the fourth direction coincides with the first force receiving surface 662. The urging portion 112 of the urging member 110 is located between the first urging surface 662 and the first insertion hole 65 in the fourth direction. The first force receiving surface 662 is configured to receive the separation force applied by the force applying portion 112 of the acting member 110. The second stress surface 621 is used for bearing the urging force exerted by the first pressing member 95 on the box.

The following is a working procedure of the developing device disclosed in the present embodiment, first, the developing device is mounted to a box inside an electronic image forming apparatus. Since the first collecting member 60 can rotate relative to the developing roller 20, if the first collecting member 60 interferes with the cartridge during the installation process, the first collecting member 60 can rotate around the developing roller 20 to avoid, so as to ensure smoothness during the installation process.

After the installation is completed, when the electronic imaging device receives a printing signal, the driving part receives power output by the electronic imaging device and drives the developing roller 20, the powder feeding roller and the stirring frame to rotate through the transmission assembly so as to start printing.

When printing is completed, the electronic image forming apparatus no longer outputs power, and thus the developing roller 20, the powder feeding roller, and the agitator stop rotating. At this time, the electrophotographic apparatus applies a separating force F1 to the force receiving portion 111 of the acting member 110, and the force receiving portion 111 of the acting member 110 swings around the cam surface 113 in a direction approaching the developing roller 20 due to the contact of the cam surface 113 with the cartridge. At the same time, the urging portion 112 of the urging member 110 swings about the cam surface 113 in a direction away from the developing roller 20, thereby applying the separating force F2 to the first urging surface 662 on the first collecting member 60 in a direction away from the developing roller 20. And thus the first collecting member 60 pulls the developing roller 20 and the cartridge 10 so that the entire developing device moves in a direction away from the photosensitive drum 92, and thus the photosensitive drum 92 is not contacted with the developing roller 20. Meanwhile, since the first spring 96 is installed between the first pressing piece 95 and the drum frame 91, the first pressing piece 95 is displaced by the separating force F2 and compresses the first spring 96, so the first pressing piece 95 does not restrict the movement of the first collecting member 60.

When the electronic image forming apparatus starts printing again, the electronic image forming apparatus outputs power to the coupling 41, and the electronic image forming apparatus stops applying the separating force F1 to the force receiving portion 111 of the acting element 110, so the force applying portion 112 of the acting element 110 no longer applies the separating force F2 to the first pressing member 95. At this time, under the action of the self gravity of the developing device, the developing device returns to the original position, so that the developing roller 20 is in contact with the photosensitive drum 92 again, and meanwhile, under the action of the elastic force of the first spring 96, the first pressing piece 95 applies a force pushing force near the direction of the photosensitive drum 92 to the second stress surface 621 on the first collecting piece 60, so that the conductive component drives the developing device, and further, the developing roller 20 is abutted against the photosensitive drum 92.

At the same time, the voltage output from the electronic imaging device is conducted to the first spring 96 and then to the first collecting member 60 via the first pressing member 95. The first manifold 60 conducts the voltage to the developer roller 20. Further, since the first spring 96 is provided, the first pressing member 95 and the second receiving surface 621 are always kept in contact with each other, and thus the developing roller 20 is always kept at a voltage.

Through the design, the functions of the forced pushing component, the drum roller separating component and the electric receiving component on the existing developing device are integrated on the conductive component, so that parts on the developing device are reduced, the production cost is reduced, the space occupation is reduced, and the miniaturization of the developing device is facilitated. The first receiving surface 662 is formed by an inner wall of a hole provided in the first collecting member 60. The protrusion is arranged, the side wall of the protrusion is used as the first stress surface 662, one side wall can be reduced, consumption of raw materials is reduced, cost is lowered, and an action piece is not required to be inserted into a hole in the assembly process, so that the assembly difficulty is lowered.

Example six

As shown in fig. 22, the difference between the present embodiment and the fifth embodiment is that the engaging portion 66 is a plate-like member extending in the first direction, a surface of the engaging portion 66 adjacent to the developing roller 20 in the fourth direction is a first stress surface 662, the first stress surface 662 is an arc surface, a center of the first stress surface 662 is located on a side of the force applying portion 112 of the acting element 110 away from the developing roller 20 in the fourth direction, and a projection of the force applying portion 112 of the acting element 110 in the fourth direction overlaps the first stress surface 662. The surface of the engaging portion 66 away from the developing roller 20 in the fourth direction no longer constitutes a second stress surface 621 together with the surface of the first collecting member 60 away from the developing roller 20 in the further fourth direction.

The volume of the matching portion 66 in the present embodiment is smaller than that of the matching portion 66 in the fifth embodiment, so that the amount of raw materials can be reduced, and the cost can be saved.

Example seven

As shown in fig. 23, this embodiment differs from the sixth embodiment in that the urging portion 112 of the acting element 110 is integrally provided with a recess formed in the urging portion 112 of the acting element 110 so as to be recessed in the fourth direction toward the developing roller. The recess mates with the mating portion 66. The mating portion 66 may be inserted into the recess. So that when the force application portion 112 of the acting element 110 applies the separating force F2 to the mating portion 66, the mating portion 66 is always restrained within the recess, preventing the mating portion 66 from coming out of contact with the force application portion 112 of the acting element 110. So that the transmission process is more stable.

Example eight

When the developer in the developing device is exhausted, it is necessary to replace the developing device filled with the developer with a new one, and therefore, the developing device is supported in the electrophotographic image forming apparatus so as to be detachable, so that the developing device can be replaced. However, there are disclosed a developing device and a drum assembly in the prior art, in which an acting member is provided on the drum assembly, the developing device is not provided with the acting member, the first collecting member of the developing device is provided with a hole-shaped fitting portion penetrating the first collecting member, and when the developing device is mounted on the cartridge, the acting member on the drum cartridge may pass through the hole-shaped fitting portion penetrating the first collecting member, so that when the acting member transmits the separating force of the electrophotographic image forming apparatus, the end portion of the acting member cannot abut against the inner wall of the fitting portion, which may result in poor result of the separating force transmission, affecting the separation of the developing roller from the photosensitive drum.

Further, a portion of the guide rail (e.g., the first guide surface 93) on the cartridge may be partially inserted into the mating portion, resulting in that the portion of the drum cartridge 2 inserted into the mating portion may catch the developing device when the developing device is taken out, resulting in that the developing device cannot be taken out smoothly.

As shown in fig. 24, in order to solve the above-described problem, the present embodiment discloses a developing device, which is different from the first embodiment in that the structure of the collecting member is different, and the acting member is movably provided on the case 2.

As shown in fig. 24, in the present embodiment, the collecting member includes a first collecting member 60 and a second collecting member, the first collecting member 60 is disposed at the first end 11 of the case 10, the second collecting member is disposed at the second end 12 of the case 10, and the first collecting member 60 can be regarded as an electrically conductive electrode.

As shown in fig. 24 and 25, the first collecting member 60 includes a first end 61 and a second end 62, the first collecting member 60 extends between the first end 61 and the second end 62 in the second direction, the second end 62 is farther from the developing roller 20 than the first end 61, and the second end 62 is farther from the third end of the cartridge 10 than the first end 61. The first end portion 61 is rotatably mounted on the developing roller shaft 22 of the developing roller 20, and the first collecting member 60 is pivoted about the rotation axis of the developing roller 20 when the developing device 1 is mounted on the drum cartridge 2, so that the first collecting member 60 is easily engaged with the drum frame 91 on the drum cartridge 2 when the developing device 1 is mounted on the drum cartridge 2. Specifically, in the present embodiment, the first collecting member 60 is a block-shaped member, the first end portion 61 of which is provided with the first insertion hole 65, the first end portion 61 of the first collecting member 60 is mounted at one end of the developing roller shaft 22 through the first insertion hole 65 so that the first collecting member 60 can be mounted on the developing roller shaft 22 and rotated on the developing roller shaft 22, and the first collecting member 60 is made of a conductive material so that the first collecting member 60 can supply power to the developing roller 20 as a developing electrode while being mounted on the developing roller shaft 22 for rotation.

As shown in fig. 24 and 25, in the present embodiment, the first collecting member 60 is provided with the engaging portion 66, and the engaging portion 66 is a first groove extending substantially in the third direction, and the surface of the first groove facing the developing roller 20 is a first force receiving surface 662.

As shown in fig. 25, preferably, the first collecting member 60 is further provided with a closing portion 67, and the closing portion 67 is located at one end (specifically, an upper end) of the fitting portion 66 in the third direction for closing one end of the fitting portion 66 in the third direction, that is, a lower end opening of the fitting portion 66, and the upper end is closed, the closing portion 67 is of a convex structure, protruding toward the fifth end of the cartridge 10, and the closing portion 67 provided on the first collecting member 60 abuts against the drum cartridge 2 against the urging force of the urging member 110 (in the related art), preventing the developing device 1 from being excessively detached from the drum cartridge 2.

Further, as shown in fig. 25, the outer end side of the closing portion 67 is arc-shaped, and the closing portion 67 is arc-shaped, so that the drum cartridge 2 can be slidably matched with the closing portion 67 of the first collecting member 60, and the first collecting member 60 can be conveniently mounted on the drum cartridge 2. Specifically, in the present embodiment, the fitting portion 66 and the closing portion 67 are provided on opposite side surfaces of the block-shaped first collecting member 60, respectively, and the positions of the closing portion 67 and the fitting portion 66 on the first collecting member 60 correspond to each other, that is, correspond to the first hole provided in the first collecting member 60, one end of the first hole is closed, and the closed outer end side is arc-shaped as the closing portion 67.

When the developing device 1 is mounted on the drum cartridge 2, the closing portion 67 can abut against the first guide surface 93 on the drum cartridge 2, the first guide surface 93 can resist the urging force of the acting member 110, the developing device 1 is prevented from being excessively detached from the drum cartridge 2, and the first guide surface 93 can guide the first collecting member 60 to be mounted through the arcuate closing portion 67.

As shown in fig. 27 and 28, when the developing device 1 is mounted with the drum cartridge 2, the first collecting member 60 extends into the track formed by the first guide surface 93 and the second guide surface 94 and is caught in the track, so that the developing device 1 is mounted with the drum cartridge 2 and fixed; and the side of the first collecting member 60 provided with the closing portion 67 abuts against the first guide surface 93, when the closing portion 67 on the first collecting member 60 abuts against the first guide surface 93, the first guide surface 93 can resist the urging force of the urging member 110, preventing the developing device 1 from being excessively detached from the drum cartridge 2.

The second end 62 is farther from the one end of the casing 10 than the first end 61 in the second direction, so that the second end 62 of the first collecting member 60 can be located farther from the drum cartridge 2 than the first end 61 when the developing device 1 is mounted, making it easier to mount the developing device 1. Specifically, in the present embodiment, the developing roller 20 is disposed at one end of the cartridge body 10 in the second direction, the first end 61 of the first collecting member 60 is mounted on the developing roller shaft 22, the second end 62 is away from the developing roller 20, and in the present embodiment, the second end 62 is away from the end on which the developing roller 20 is mounted on the cartridge body 10, so that when the developing device 1 is mounted on the drum cartridge 2, the first end 61 of the first collecting member 60 first extends into the track formed by the first guide surface 93 and the second guide surface 94, the first end 61 is fixed at the position of the developing device 1, and it is more convenient to cooperate with the drum cartridge 2 when the developing device 1 is mounted.

As shown in fig. 26 and 27, the acting members 110 are movably provided at both ends of the drum cartridge 2 to cooperate with the first collecting member 60 and the second collecting member, respectively. The acting member 110 includes a force receiving portion 111, a force applying portion 112, and a cam surface 113 (abutting portion), the acting member 110 is a substantially bar-shaped structural member, the force receiving portion 111 is located at one end (specifically, a lower end in the third direction) of the acting member 110, the force applying portion 112 is located at the other end (specifically, an upper end in the third direction) of the acting member 110, the cam surface 113 is located between the force receiving portion 111 and the force applying portion 112, the cam surface 113 is located at a lower side of the first collecting member 60 in the third direction, the cam surface 113 abuts against the drum frame 91 when the developing device 1 is mounted on the cartridge 2, and the acting member 110 can rotate around the cam surface 113 under an external force to be engaged with the engaging portion 66. The force receiving portion 111 and the force applying portion 112 may be configured to have a cylindrical surface with a certain arc shape, and the acting member 110 may be rotatably mounted on the case 10 by a fixing member.

As shown in fig. 27, when the developing device 1 and the drum cartridge 2 have not yet been completely in position, the acting member 110 has not yet been inserted into the fitting portion 66, the developing device 1 is moved relative to the drum cartridge 2 so that the developing roller 20 moves close to the photosensitive drum 92 of the drum cartridge 2, the first collecting member 60 is pivoted about the rotation axis of the developing roller 20, the first collecting member 60 is between the photosensitive drum 92 and the first pressing member 95, and the electrophotographic apparatus can move the developing roller 20 close to the photosensitive drum 92.

When the developing device 1 is mounted on the drum cartridge 2, the urging portion 112 of the urging member 110 is inserted into and located in the fitting portion 66 of the first collecting member 60, the developing roller 20 moves close to the photosensitive drum 92, the second end portion 62 of the first collecting member 60 can move along the track formed between the first guide surface 93 and the second guide surface 94, and at this time, the urging portion 112 of the urging member 110 and the closing portion 67 may be out of contact, and the urging member 110 does not receive an external urging force.

As shown in fig. 28, when the developing device 1 is fully mounted to the drum cartridge 2, the first collecting member 60 pivots about the rotation axis of the developing roller 20. Therefore, in the case where the cartridge 10 is rotated relative to the drum frame 91, the first collecting member 60 is positioned between the photosensitive drum 92 and the first pressing member 95, and the first pressing member 95 applies a urging force to the second urging surface 621 of the first collecting member 60 under the tension of the first spring 96, so that the developing roller 20 and the photosensitive drum 92 are brought into close contact with each other, and normal printing is possible, and at this time, the first guide surface 93 is brought into contact with the arcuate closing portion 67.

As shown in fig. 29, when printing is finished, to separate the developing roller 20 from the photosensitive drum 92, the electrophotographic image forming apparatus applies a separating force F1 to the force receiving portion 111 of the acting member 110, and after the acting member 110 is forced, rotates about the cam surface 113, so that the force applying portion 112 presses the first force receiving surface 662 of the engaging portion 66 of the first collecting member 60, and applies a separating force F2 in a direction away from the photosensitive drum 92 to the same, so that the first collecting member 60 pulls the developing roller 20 and the cartridge 10, so that the entire developing apparatus moves in a direction away from the photosensitive drum 92, and further, the photosensitive drum 92 and the developing roller 20 are not contacted. Since the first spring 96 is installed between the first pressing member 95 and the drum frame 91, the first pressing member 95 is displaced by the separating force F2 and compresses the first spring 96, so the first pressing member 95 does not restrict the movement of the first collecting member 60, and at the same time, the closing portion 67 and the first guide surface 93 resist the force, preventing the developing device 1 from being excessively detached from the drum cartridge 2.

When the developer in the developing device 1 is printed and replaced with a new developing device 1, the force is applied to the force receiving portion 111 of the acting member 110 by the electrophotographic image forming apparatus, the force applying portion 112 of the acting member 110 presses the first force receiving surface 662 of the engaging portion 66, the first collecting member 60 moves against the urging force of the first pressing member 95 and the first spring 96, the developing device 1 can be taken out from the drum cartridge 2, and at the same time, the closing portion 67 closes one end of the engaging portion 66, the first guide surface 93 is not inserted into the engaging portion 66 to catch the developing device, and the developing device 1 can be smoothly lowered and taken out from the drum cartridge 2.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. A developing device detachably mountable to an electronic image forming apparatus including a drum cartridge including a drum frame and a photosensitive drum, said developing device comprising:

2. A developing device according to claim 1, wherein said fitting portion is a groove, one end of which is provided with a closing portion which is a projection; alternatively, the matching part is a blind hole; alternatively, the engaging portion is a protrusion protruding in the first direction.

3. A developing device according to claim 2, wherein a surface of said engaging portion facing in a direction of said developing roller is a first force receiving surface for receiving the separating force transmitted from said force applying portion.

4. A developing device according to claim 3, wherein the first force receiving surface is an arc surface or a plane surface.

5. A developing device according to claim 1, wherein said acting member is rotatable with respect to the cartridge body, and a rotation axis of said acting member does not pass through a projection of said abutting portion in the first direction.

6. A developing device according to claim 1, wherein said acting member includes at least one translational member that moves linearly with respect to said cartridge body.

7. A developing apparatus according to claim 5 or 6, wherein said cartridge body is provided with a slide rail, and said acting member is mounted on said slide rail and is movable along said slide rail upon receiving a separating force of said electronic imaging device.

8. A developing apparatus according to any one of claims 1 to 6, wherein said collecting member is connected to said developing roller, said collecting member is made of a conductive material, and said collecting member receives a power supply of said electrophotographic apparatus and transmits the power supply to said developing roller.

9. The developing device according to claim 8, wherein the collecting member includes a first conductive member connected to the developing roller and fixedly provided to the cartridge body, and a second conductive member movably connected to the first conductive member and movable with respect to the first conductive member.

10. A developing device according to claim 9, wherein one of said first conductive members is provided with a guide hole, and the other is provided with a guide post which is fitted in said guide hole, said guide post being inserted into said guide hole and being relatively movable therein.

11. A developing device according to claim 9, wherein a second elastic member is provided between said first conductive member and said second conductive member.

12. A developing device according to any one of claims 1-6, 9-11, wherein said collecting member includes a guide portion that contacts said drum frame during installation of said developing device to guide the installation of said developing device.

13. A developing device according to claim 12, wherein said engaging portion is closer to said developing roller than said urging portion, and said guide portion is closer to said developing roller than said urging portion.

14. A developing device detachably mounted on an electronic imaging device comprising a cartridge, the cartridge comprising a drum frame, a photosensitive drum and an acting member, the acting member comprising a force receiving portion for receiving a separating force of the electronic imaging device, a force applying portion for transmitting the separating force, and an abutting portion for contacting the drum frame when the acting member receives the separating force; wherein the developing device comprises:

15. A developing device according to claim 14, wherein said collecting member includes a guide portion that contacts said drum frame during installation of said developing device to guide the installation of said developing device.

16. A developing apparatus according to any one of claims 14 to 15, wherein said collecting member is connected to said developing roller, said collecting member is made of a conductive material, and said collecting member receives a power supply of said electrophotographic apparatus and transmits the power supply to said developing roller.