CN219936282U - Developing device - Google Patents

Abstract

The utility model discloses a developing device, which is detachably mounted on a drum box, and comprises: a case body; a developing roller rotatably supported at the cartridge body; the action piece is movably arranged on the box body and comprises a stress part and a force application part, wherein the stress part can receive the separation force applied by the electronic imaging device, the force application part is used for transmitting the separation force, the guide part is in contact with the drum frame and used for guiding the installation of the developing device, the force pushing part is used for receiving the force pushing force applied by the drum box, the developing roller is in close contact with the photosensitive drum, the matching part is used for receiving the separation force transmitted by the force application part, and in the second direction, the matching part is positioned between the guide part and the force pushing part. By adopting the technical scheme provided by the utility model, the technical problems that the photosensitive drum is polluted by depositing toner on the photosensitive drum caused by long-time contact of the photosensitive drum and the developing roller in the prior art, and the developing roller and/or the developer are accelerated to deteriorate due to long-time friction of the photosensitive drum and the developing roller are solved.

Description

a developing device

Technical field

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

Background technique

The developing cartridge is a removable part widely used in electronic imaging devices. The developing box has a developing roller, which is rotatably arranged on the developing box. The developing roller includes a developing roller shaft and a main body wrapped around the developing roller shaft. When the electronic imaging device is working, the developing roller contacts and squeezes the photosensitive drum, causing the developer on the developing roller to transfer to the surface of the photosensitive drum forming a specific electrostatic latent image to complete the development process. However, when the electronic imaging device stops working, the developing roller While still in contact with the photosensitive drum, the developer carried on the developing roller is unnecessarily deposited on the photosensitive drum, causing contamination of the photosensitive drum, and such developer is also deposited on the recording material (paper), resulting in contamination of the recording material. ; And due to the long-term friction between the photosensitive drum and the developing roller, the deterioration of the developing roller and/or the developer will be accelerated. Therefore, in order to solve the above technical problems, there is a need for a structure that separates the photosensitive drum and the developing roller when the electronic imaging device stops working, so as to extend the service life of both.

Utility model content

According to one aspect of the present invention, a developing device is provided, which is detachably mounted on an electronic imaging device including a drum cartridge, the drum cartridge including a drum frame and a photosensitive drum, and the developing device includes:

A box body containing developer inside, the box 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 the third end of the box body, the developing roller including a developing roller shaft extending along the first direction;

The action member is movably provided on the box body and includes a force-receiving part and a force-applying part. The force-receiving part can receive the separation force exerted by the electronic imaging device, and the force-applying part is used to transmit the separation force,

a guide part, which is in contact with the drum frame and used to guide the installation of the developing device,

a pushing part, the pushing part is used to receive the pushing force exerted by the drum cartridge, so that the developing roller is in close contact with the photosensitive drum,

A fitting part, the fitting part is used to receive the separation force transmitted by the force applying part, and the fitting part is located between the guide part and the pushing part in the second direction.

In some embodiments, the fitting part is an arc-shaped protrusion; or the fitting part is a convex column; or the fitting part is a blind hole or a groove; or the fitting part is an arc-shaped hook.

In some embodiments, the force-applying part is a latching groove, or the force-applying part is an arc-shaped protrusion, or the force-applying part is an arc-shaped hook.

In some embodiments, the protruding column extends outward along the first direction, the clamping groove is a U-shaped groove, and the clamping slot is clamped on the protruding column.

In some embodiments, the matching part and the force-applying part cooperate in a hooking manner.

In some embodiments, the action member includes at least one translation member, and the at least one translation member moves linearly relative to the box body.

In some embodiments, the action member includes a first translation member and a second translation member. The first translation member includes a force-receiving part. When the first translation member receives an external force and moves, it drives The second translation member moves, and the second translation member includes a force application part.

In some embodiments, the first translation member and the second translation member are provided with an inclined surface or an arc surface, and the first translation member and the second translation member are connected by an inclined surface and an inclined surface or an arc surface. The contact between the inclined surface and the arc surface or the arc surface and the arc surface enables the first translation member to drive the second translation member.

In some embodiments, an included angle is formed between the movement direction of the first translation member and the movement direction of the second translation member.

In some embodiments, the included angle is an acute angle.

In some embodiments, the box body is provided with a first slide rail, the first translation member is provided with a first mounting portion, and the first translation member is installed on the first mounting portion through the first mounting portion. The first slide rail is movable relative to the first slide rail;

The box body is provided with a second slide rail, the second translation member is provided with a second mounting portion, and the second translation member is installed on the second slide rail through the second mounting portion, And can move relative to the second slide rail.

In some embodiments, a first collection piece is also included, the guide part, the pushing part and the fitting part are located on the first collection piece, and the first collection piece receives the separation force exerted by the action member and The movement of the first assembly member drives the developing device to move away from the photosensitive drum, causing the developing roller to separate from the photosensitive drum.

In some embodiments, the first assembly is connected to the developing roller, the first assembly is made of conductive material, the first assembly receives the power delivered by the electronic imaging device and transfers the power to the Developing roller.

In some embodiments, the urging portion is located at the first end of the box body and extends outward along a first direction. In the second direction, the urging portion is farther away from the developing roller than the matching portion.

In some embodiments, it also includes a positioning shaft and a first assembly piece, the first assembly piece is connected to the developing roller, the fitting portion is located on the assembly piece, and the first assembly piece receives the action member The movement of the first assembly member drives the developing device to move away from the photosensitive drum, causing the developing roller to separate from the photosensitive drum. The positioning shaft moves in the first direction. protruding outward, the assembly member is provided with a second hole and a first insertion hole connected to the developing roller shaft, the second hole is further away from the photosensitive drum than the first insertion hole in the second direction, and the positioning The shaft is inserted into the second hole, and the first assembly can swing around the positioning shaft.

In some embodiments, a first collection piece is further included, the fitting portion is located on the first collection piece, and the first collection piece can move relative to the developing device after receiving the separation force exerted by the action member.

Beneficial effects of the utility model: the technical solution provided by the utility model is used to realize the separation of the photosensitive drum and the developing roller when the electronic imaging device stops working, and to make the developing roller contact the photosensitive drum when the electronic imaging device is working, thereby solving the current problem. In the prior art, the long-term contact between the photosensitive drum and the developing roller causes toner to be deposited on the photosensitive drum, thus contaminating the photosensitive drum, and the long-term friction between the photosensitive drum and the developing roller accelerates the deterioration of the developing roller and/or the developer.

Description of the drawings

Figure 1 is a schematic three-dimensional structural diagram of a developing device according to Embodiment 1 of the present invention;

Figure 2 is a schematic three-dimensional structural diagram of the developing device from another perspective of Embodiment 1 of the present invention;

Figure 3 is a schematic three-dimensional structural diagram of the developing device and drum box according to Embodiment 1 of the present invention;

Figure 4 is an exploded three-dimensional structural diagram of the first end of the developing device according to Embodiment 1 of the present invention;

Figure 5 is a schematic three-dimensional structural diagram of the relative position of the developing device and the guide component of the drum box during the process of installing the developing device on the drum box or removing the developing device from the drum box according to Embodiment 1 of the present invention;

Figure 6 is a schematic three-dimensional structural diagram of the relative position of the developing device to the drum box after removing the fixing parts after the process of installing the developing device in the drum box according to Embodiment 1 of the present invention;

Figure 7 is a schematic three-dimensional structural diagram of the relative position of the developing device to the drum box after removing the fixing member when the developing device is in separate operation according to Embodiment 1 of the present invention;

Figure 8 is a schematic three-dimensional structural diagram of the developing device according to Embodiment 2 of the present invention after removing the fixing member at the first end;

Figure 9 is a partial enlarged structural schematic diagram of position A in Figure 8;

Figure 10 is a side view of the developing device according to Embodiment 2 of the present invention;

Figure 11 is a schematic structural diagram of the assembly of the developing device according to Embodiment 2 of the present invention;

Figure 12 is a schematic structural diagram of the partial matching position of the developing device and the drum box in Embodiment 2 of the present invention;

Figure 13 is a partial enlarged structural diagram of B in Figure 12;

Figure 14 is a schematic structural diagram of the first assembly member being placed into the drum cartridge guide position before the developing device is placed into the drum cartridge according to Embodiment 2 of the present invention;

Figure 15 is a schematic structural view of the first assembly member and the drum cartridge guide position, the pushing position and the acting member receiving the force when the developing device of Embodiment 2 of the present invention is taken out;

Figure 16 is a schematic diagram of the matching structure of the developing device installed on the drum box in Embodiment 3 of the present invention;

Figure 17 is a schematic three-dimensional structural diagram of the first assembly part and the action part of the developing device according to Embodiment 3 of the present invention;

Figure 18 is a schematic three-dimensional structural diagram of a developing device according to Embodiment 4 of the present invention;

Figure 19 is a schematic three-dimensional structural diagram of the developing device and drum box in Embodiment 4 of the present invention;

Figure 20 is an exploded three-dimensional structural diagram of the first end of the developing device in Embodiment 4 of the present invention;

Figure 21 is a schematic three-dimensional structural diagram of the first translation member of the developing device according to Embodiment 4 of the present invention;

Figure 22 is a schematic three-dimensional structural diagram of the second translation member of the developing device according to Embodiment 4 of the present invention;

Figure 23 is a schematic three-dimensional structural view of the relative position of the developing device and the guide member of the drum box during the process of installing the developing device on the drum box or removing the developing device from the drum box according to Embodiment 4 of the present invention;

Figure 24 is a schematic cross-sectional view of the relative positions of the developing device and the guide component of the drum box after the process of installing the developing device in the drum box in Embodiment 4 of the present invention;

Figure 25 is a cross-sectional schematic diagram of the relative positions of the developing device and the guide component of the drum box when the developing device is in separate operation according to Embodiment 4 of the present invention;

Figure 26 is a partially exploded structural diagram of the first end of the developing device in Embodiment 4 of the present invention;

Figure 27 is a schematic diagram of the partially exploded structure of the first end of a modification of the developing device according to Embodiment 4 of the present invention;

Figure 28 is a schematic structural diagram of the partial mating position of the first end of the developing device and the drum box in Embodiment 4 of the present invention;

Figure 29 is a schematic diagram of the state when the developing device and the drum cartridge are in the initial mating position and the developing roller and the photosensitive drum are separated according to Embodiment 4 of the present invention;

Figure 30 is a schematic diagram of the state when the developing device and the drum cartridge are fully matched and the developing roller is in contact with the photosensitive drum (the developing cartridge is working) in Embodiment 4 of the present invention;

31 is a schematic diagram of a state in which the developing roller and the photosensitive drum are separated (the developing cartridge is not working) after the working member of the developing device in Embodiment 4 of the present invention receives an external force, and the working member drives the first assembly member to move.

Detailed ways

The present utility model will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

It should be noted that the terms “first”, “second”, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

In the present utility model, unless otherwise explicitly stipulated and limited, the terms "installation", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a detachable connection. Integrated; it can be mechanically connected, electrically connected or communicable with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interactive relationship between two elements, unless otherwise Clear limits. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stipulated and limited, the first feature "on" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in direct contact through an intermediate medium. indirect contact. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

In the above description, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" or the like means that specific features, structures, or structures are described in connection with the embodiment or example. , materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

Embodiment 1

Figure 1 is a schematic three-dimensional structural diagram of the developing device according to Embodiment 1 of the present utility model; Figure 2 is a schematic three-dimensional structural diagram of the developing device according to Embodiment 1 of the present utility model from another perspective; Figure 3 is a schematic diagram of the developing device and the drum according to Embodiment 1 of the present utility model. Schematic diagram of the three-dimensional structure of the box; as shown in Figures 1 and 2, the developing device 1 includes a box body 10, a developing roller 20, a powder feeding roller (not shown in the figure), a stirring element (not shown in the figure), and a driving end. The protective cover 30, the transmission assembly 40, the chip 50, the assembly part, the action part and the fixing part. The assembly part includes a first assembly part 60 and a second assembly part 70; as shown in Figure 3, the developing device 1 is detachably installed on the drum. Cartridge 2, the developing device 1 and the drum cartridge 2 are used in electronic imaging devices. Specifically, the drum cartridge 2 includes a drum frame 91, a photosensitive drum 92, a first guide surface 93 (shown in Figure 5), a second Guide surface 94 (shown in FIG. 5 ), first pressing member 95 , first spring 96 .

The box body 10 is used to accommodate the developer. The box body 10 has a first end 11 and a second end 12 that are oppositely arranged in a first direction. The first assembly member 60 , the action member 110 and the fixing member 120 are located at the third end of the box body 10 . One end 11, the second assembly member 70 is located at the second end 12 of the box body 10. The developing device 1 is also provided with another acting member 110A. The other acting member 110A and the second assembly member 70 are located at the same end of the box body 10. The two ends 12 can also be provided with another fixing member; the box body 10 has a third end and a fourth end in the second direction, where the third end is also the front end of the box body 10 and the fourth end is the rear end of the box body 10 , the box body 10 is provided with an opening at the third end, and the external space of the box body 10 and the developer-accommodating chamber of the box body 10 are connected through the opening; the fourth end is provided with a handle. In addition, the third direction intersects the first direction and the second direction, and the box body 10 has a fifth end and a sixth end in the third direction, where the fifth end is also the upper end of the box body 10 and the sixth end is The lower end of the box body 10.

The developing roller 20 is rotatably installed at the opening position near the third end of the box body 10 . The developing roller 20 extends in the first direction. The developing roller 20 includes a developing roller body 21 and a developing roller shaft 22 . The developing roller 20 Rotable about a developing roller axis extending along the first direction. The powder feeding roller is used to feed the developer contained in the box body 10 to the developing roller 20 , and the stirring element is used to stir the developer to prevent it from agglomerating and feed the developer to the powder feeding roller.

The transmission assembly 40 is located at the second end 12 of the box body 10 . The transmission assembly 40 is used to receive the driving force from the electronic imaging device and transmit the driving force to other components of the developing device 1 . The transmission assembly 40 includes a coupling 41 , coupling gear 42, developing gear 43, powder feeding gear (not shown in the figure), stirring gear (not shown in the figure). The driving end protective cover 30 is also located at the second end 12 of the box body 10 and is used to support and protect the transmission assembly 40. The driving end protective cover 30 at least partially exposes the transmission assembly 40; wherein, the driving end protective cover 30 has a Through hole, the coupling 41 has a recessed portion in the first direction, the coupling 41 is exposed through the through hole so that the recessed portion cooperates with the driving device in the electronic imaging device to receive data from the electronic imaging device. the driving force. The driving end cover 30 and the cartridge body 10 together form an integral housing of the developing device 1 . The driving end protective cover 30 is installed on the second end of the box body 10 by, for example, screw fixing, snapping, etc.

The coupling gear 42 is closer to the second end 12 of the cartridge 10 than the coupling 41 in the first direction, and the coupling gear 42 transmits the driving force received from the electronic imaging device to the developing device 1 As for other components, the coupling 41 is rotatable around a first axis extending in a first direction. The developing gear 43 is installed at one end of the developing roller 20 in the first direction, meshes with the coupling gear 42, receives the driving force from the coupling 41, and can rotate along the first direction with the developing roller 20. A second axis (developing roller axis) extending in one direction extends. The powder feeding gear is located at one end of the powder feeding roller in the first direction, meshes with the coupling gear 42, receives the driving force from the coupling 41, and can rotate around the powder feeding roller extending along the first direction. The third axis rotates; the stirring gear is located at one end of the stirring element in the first direction, also receives the driving force from the coupling 41, and can rotate together with the stirring element around the fourth axis extending along the first direction.

The second end 12 of the box body 10 can also be provided with a chip 50. The chip 50 stores information about the developing device and can be electrically connected to the electronic imaging device, thereby realizing the electronic identification of the developing device 1 and the electronic imaging device and the exchange of data and other information. connect. The chip 50 is disposed on a side of the box body 10 (where the box body includes a gear cover 53 ) close to the transmission assembly 40 in the first direction, and at an end away from the developing roller 20 in the second direction.

When the developing device 1 receives the driving force, the developer is supplied from the internal chamber of the cartridge body 10 to the outer peripheral surface of the developing roller body 21 via the powder feeding roller. At this time, the developer is frictionally charged between the powder feeding roller and the developing roller main body 21 . Furthermore, 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.

Figure 4 is an exploded three-dimensional structural diagram of the first end of the developing device according to Embodiment 1 of the present invention; Figure 5 shows the developing device according to Embodiment 1 of the present invention during the process of being installed on the drum box or moving the developing device from the drum box. During the removal process, the three-dimensional structural schematic diagram of the relative position of the developing device and the guide component of the drum box; as shown in Figures 4 and 5, the first collection member 60 is located at the first end 11 of the box body 10, and the first collection member 60 can It is rotatably mounted on the other end of the developing roller shaft 22 in the first direction. The first collection member 60 extends generally along the second direction. The first collection member 60 has a first end 61 and a second end 62. The first collection member 60 is between the first end 61 and the second end in the second direction. extending between the two end portions 62. In the second direction, the second end portion 62 is further away from the developing roller 20 than the first end portion 61, and the second end portion 62 is further away from the box body 10 than the first end portion 61. The third end is also further away. During the process of installing the developing device 1 to the drum box 2, the first end 61 contacts the drum frame 91 and plays a role in guiding and installing the developing device 1, so that the developing device 1 is successfully installed on the drum box, that is, the first end portion 61 in this embodiment One end 61 is a guide part. The second end portion 62 can receive the urging force exerted by the drum cartridge 2 so that the developing roller 20 and the photosensitive drum 92 are in close contact.

The first assembly 60 also includes a connecting arm connecting the first end 61 and the second end 62. The connecting arm includes a first arm 63 and a second arm 64. The second arm 64 is farther away from the developing roller than the first arm 63. 20 is further away, and the second arm 64 is further away from the third end of the box 10 than the first arm 62; in this embodiment, the first end 61 and the second end 62 are formed integrally, however, The first end 61 and the second end 62 may also have separate structures. In this case, the first end 61 and the second end 62 may be fixed and connected to each other through connecting arms.

The first assembly 60 further includes a first insertion hole 65 disposed in the first end 61 and extending along the first direction. The first insertion hole 65 may be a through hole that passes through the first end 61 in the first direction. The first insertion hole 65 may also be a blind hole that does not pass through the first end 61 . The developing roller shaft 22 is in the first direction. One end in the direction is inserted into the first insertion hole 65 . The first assembly 60 is rotatable relative to the cartridge body 10 about the developing roller shaft 22 . More specifically, the second end 62 is pivotable relative to the first end 61 about the rotation axis of the developing roller 20 .

In this embodiment, the first assembly 60 can also be used as a conductive member and is electrically connected to the developing roller 20, so it can also be called a developing electrode. The first assembly 60 can be made of conductive materials such as conductive resin, metal materials, etc., and is not specifically limited here.

The first assembly 60 also has a fitting portion 66, which is located on the connecting arm and extends along the first direction. In this embodiment, the connecting arm is provided with a groove structure, and the groove is located on a third side. Passing upward through the connecting arm, the fitting portion 66 is located in the groove and protrudes away from the box body 10 in the first direction; optionally, no groove structure is provided on the connecting arm, and the fitting portion 66 is A protrusion is provided that protrudes relative to the connecting arm in the first direction. The fitting part 66 is located between the first end 61 and the second end 62. In this embodiment, the fitting part 66 is configured as a convex column structure, preferably a cylindrical protrusion; optionally, the fitting part 66 can also be Set to any other shape, no specific restrictions are made here. Optionally, the connecting arm can also be configured to have a structure with at least two grooves, and the side walls of the grooves serve as the force-receiving parts.

The action member 110 is located at the first end 11 of the box body 10 . The action member 110 is generally a rod-shaped member. The action member 110 extends generally along the third direction. The action member 110 has a force-receiving part 111 , a force-applying part 112 , and a cam surface 113 . The force-receiving part 111 is located at one end of the acting member 110 in the third direction, the force-applying part 112 is located at the other end of the acting member 100 opposite to the force-receiving part 111 in the third direction, and the cam surface 113 is located between the force-receiving part 111 and the force-receiving part 111 in the third direction. Between the force applying parts 112 , the cam surface 113 is closer to the developing roller 20 in the second direction than the force receiving part 111 and the force applying part 112 . The cam surface 113 is preferably an arc surface. In this embodiment, the force-receiving part 111 is configured as an arc-shaped block, and the force-applying part 112 is configured as a U-shaped slot for engaging with the outer surface of the fitting part 66 , thereby preventing The action member 110 is detached from the first assembly member 60 in the third direction. Optionally, the shape of the force applying portion 112 can be adjusted accordingly according to the shape of the matching portion 66 , for example, it can be configured as a rectangular slot or other irregular slot form, and there is no specific limitation on this. In this embodiment, in order to facilitate the force-applying part 112 to be clamped on the mating part 66, the force-applying part 112 may have a certain degree of elasticity. In other embodiments, it may not have elasticity.

The action member 110 can move relative to the box body 10 . When the developing device 1 is mounted on the drum cartridge 2, the cam surface 113 comes into contact with the drum frame 91 (shown below) of the drum cartridge 2. The action member 110 can contact the drum frame 91 about the cam surface 113 and pivot between the first position and the second position.

The fixing piece 120 is located at the first end 11 of the box body 10. The fixing piece 120 can be a frame-shaped piece with one end open. The fixing piece 120 can be installed on the box body 10 through screws, buckles, etc., and a part of the action piece 110 is located in the box. Between the body 10 and the fixing part 120, the fixing part 120 is used to hold the action part 110 and prevent the action part 110 from falling off the box body 10. Optionally, the fixing member 120 can also be eliminated, and a mounting post or a mounting groove is provided at the first end of the box body 10 for installing the acting member 110 and preventing the acting member 110 from falling off the box body 10 .

As shown in FIG. 2 , the second collection piece 70 is located at the second end 12 of the box 10 , and the first collection piece 60 and the second collection piece 70 are positioned to overlap each other when viewed from the first direction. The second collective member 70 rotatably supports the other end of the developing roller shaft 22 . Other structures of the second end 12 are similar to the structure and working principle of the first end 11 and will not be described in detail here. In other embodiments, the first collection piece 60 and the second collection piece 70 may not overlap, or only one collection piece may be provided.

As shown in FIGS. 3 and 5 , the drum cartridge 2 includes a drum frame 91 , a photosensitive drum 92 , a first guide surface 93 , a second guide surface 94 , a first pressing member 95 , and a first spring 96 . The developing device 1 is installed on the drum. On frame 91. Specifically, the drum frame 91 has a first guide surface 93 and a second guide surface 94, located at one end of the drum frame 91 in the second direction, for connecting the developing device 1 to the drum cartridge 2 during the installation process. The first end 61 on 1 cooperates to guide the developing device 1 to be installed in place. The first guide surface 93 and the second guide surface 94 are arranged oppositely in the third direction, and a track is formed between them. The photosensitive drum 92 is located at one end of the drum frame 91 in the second direction. When the developing device 1 is installed in place, the outer circumferential surface of the developing roller body 21 is in contact with the outer circumferential surface of the photosensitive drum 92 . The first pressing member 95 and the first spring 96 are located at the other end of the drum frame 91 in the second direction. In addition, the first pressing member 95 and the first spring 96 are electrically conductive and may be made of conductive resin or metal or other conductive materials. The first spring 96 can be generally stretched and compressed in the second direction, and one end of the first spring 96 is connected to the first pressing member 95 in the second direction, and the other end is connected to the drum frame 91 . When the developing device 1 is installed on the drum cartridge 2 , the first pressing member 95 presses the second end 62 of the first assembly 60 toward the photosensitive drum 92 through the tension of the first spring 96 , that is, the second end in this embodiment. The portion 62 serves as a urging portion and receives the urging force exerted by the drum cartridge 2 so that the developing roller 20 and the photosensitive drum 92 are in close contact.

It can be seen that the second end portion 62 of the first assembly member 60 has an arc surface. When the developing device 1 is installed on the drum cartridge 2, the arc surface of the second end portion 62 is abutted by the first pressing member 95. And during the contact process, the second end 62 moves relative to the developing device 1 . Specifically, the second end 62 swings at the swing center of the first insertion hole 65 to be completely contacted by the first pressing member 95 . In this embodiment, the arc surface of the second end 62 plays a certain guiding role for the second end 62 during the swing process, making the installation of the second end 62 smoother. In other embodiments, it may have other shapes.

In addition, the other end of the drum box 2 has a third guide surface, a fourth guide surface, and a second pressing member corresponding to the first guide surface 93, the second guide surface 94, the first pressing member 95, and the first spring 96. The corresponding structural working principles of the second spring (not shown in the figure) are similar and will not be described again here.

As shown in FIG. 5 , during the process of installing the developing device 1 on the drum cartridge 2 or during the process of removing the developing device 1 from the drum cartridge 2 , the developing device 1 moves relative to the drum cartridge 2 so that the developing roller 20 Move closer to the photosensitive drum 92 or further away from the photosensitive drum 92 . The first assembly member 60 and the second assembly member 70 pivot around the rotation axis of the developing roller 20 , and the first end portion 61 of the first assembly member 60 is guided by the first guide surface 93 and the second guide surface 94 and the third guide surface and the fourth guide surface guide the second assembly 70 so that the first assembly 60 can be placed between the photosensitive drum 92 and the drum frame 92 without rotating the box 10 relative to the drum frame 92 . The first pressing member 95 is placed between or removed from therebetween, and the second assembly member 70 is placed between the photosensitive drum 92 and the second pressing member or is removed from therebetween.

Figure 6 is a schematic three-dimensional structural view of the relative position of the developing device 1 to the guide component of the drum box after removing the fixing parts after the installation process of the developing device 1 in the drum box according to Embodiment 1 of the present invention is completed; as shown in Figure 6, in When the developing device 1 is installed on the drum cartridge 2 , the first pressing member 95 presses the developing device 1 toward the photosensitive drum 92 through the second end 62 of the first assembly member 60 through the tension of the first spring 96 . The first end 61 of the first collection part 60 is in contact with the first guide surface 93, and the other part of the first collection part 60 is in contact with the second guide surface 94, so that the position of the first collection part 60 relative to the drum frame 91 is fixed. ; Similarly, the position of the second assembly 70 relative to the drum frame 91 is also fixed. At this time, the first pressing member 95 presses the first assembly member 60 and the second pressing member presses the second assembly member 70 , that is, the developing device 1 receives the urging force exerted by the drum cartridge 2 , so that the outer circumferential surface of the developing roller 20 is in contact with the photosensitive drum. 92 outer circumferential surface is in close contact to ensure imaging quality.

When the developing device 1 mounted on the drum cartridge 2 shown in FIG. 6 is installed in the electronic imaging device, the electrodes on the drum cartridge 2 are in contact with the electrode terminals in the electronic imaging device, and due to the first spring 96 and the first pressing force The member 95 and the first assembly member 60 are both made of conductive materials, so the power of the electronic imaging device is supplied to the developing roller 22 through the electrodes, the first spring 96 , the first pressing member 95 and the first assembly member 60 .

Figure 7 is a schematic three-dimensional structural diagram of the relative position of the developing device to the guide component of the drum cartridge after removing the fixing member when the developing device is in separate operation according to Embodiment 1 of the present invention; as shown in Figure 7, when the printing process needs to be When the developing roller 20 and the photosensitive drum 92 are temporarily separated, the electronic imaging device exerts a separation force F on the force-receiving portion 111 of the action member 110. The separation force F presses the force-receiving portion 111 of the action member 110. The action member 110 surrounds the cam surface 113 from the third When the first position is pivoted to the second position, the force-receiving part 111 pivots in a direction closer to the third end, and the force-applying part 112 pivots in a direction away from the third end. At this time, the moving force applying part 112 exerts a separation force on the fitting part 66 , so that the first assembly 60 moves in a direction away from the photosensitive drum 92 under the action of the force, so that the first pressing member 95 is pressed. , and then the first spring 96 is compressed, and the first assembly 60 moves in the direction away from the photosensitive drum 92 on the track formed between the first guide surface 93 and the second guide surface 94, thereby driving the entire developing device 1 to move away from the photosensitive drum. 92 , that is, in this embodiment, the first assembly 60 receives the separation force and causes the developing roller 20 to separate from the photosensitive drum 92 .

It can be seen that in this embodiment, after receiving the separation force exerted by the electronic imaging device, the first assembly 60 may move relative to the developing device 1 , or may not move relative to the developing device 1 .

When the electronic imaging device starts printing again, the electronic imaging device stops applying the separation force F to the force-receiving portion 111 of the acting member 110 , so the force-applying portion 112 of the acting member 110 no longer contacts the mating portion 66 . At this time, under the action of its own gravity, the developing device 1 returns to its original position, so that the developing roller 20 contacts the photosensitive drum 92 again. At the same time, under the elastic force of the first spring 96, the first pressing member 95 is forced to move toward the first The second end 62 of the assembly 60 exerts a urging force in a direction close to the photosensitive drum 92 , thereby causing the developing roller 20 to be in close contact with the photosensitive drum 92 .

In this embodiment, the first assembly 60 can be used to support the developing roller 20 , or it can only be electrically connected to the developing roller 20 without playing a supporting role, that is, the developing roller 20 can be received by the first assembly 60 The power supply provided by the electronic imaging device simplifies the component structure of the developing device 1. Therefore, during the manufacturing process, the assembly process is simpler, which is conducive to improving production efficiency, thereby reducing production time and economic costs and creating greater economy. benefit. In addition, in this example, the force application part 112 of the action member 110 and the matching part 66 of the first assembly part 60 adopt a slot and a protruding column structure to cooperate. When the action part receives the separation force F, the force application part The cooperative relationship between 112 and the matching part 66 is more stable during operation, so as to prevent the developing device 1 from reporting an error due to improper separation operation during operation.

Embodiment 2

As shown in FIG. 8 , this embodiment provides a developing device 1. Compared with Embodiment 1, the difference lies in the structures of the assembly part and the action part.

As shown in FIG. 8 , in this embodiment, the assembly includes a first assembly 60 and a second assembly 70 . The first assembly 60 is disposed on the first end 11 of the box 10 , and the second assembly is disposed on the box 10 . At the second end 12 of 10, the first assembly 60 may be considered an electrically conductive electrode.

As shown in FIGS. 9 and 10 , the first assembly 60 rotatably supports one end of the developing roller 20 in the first direction, or only contacts one end of the developing roller 20 in the first direction but has no supporting function. . The first assembly 60 has a first end 61 and a second end 62. The second end 62 is further away from the developing roller shaft 22 than the first end 61. The second end 62 is away from the cartridge body in the second direction. 10 The distance between the third end and the third end of the box 1 is further than the distance between the first end 61 and the third end of the box 1 . The first collection piece 60 extends along the first end 11 of the box 10 between the first end 61 and the second end 62 . During the process of installing the developing device 1 to the drum cartridge, the first end 61 is in contact with the drum frame 91 and plays a role in guiding and installing the developing device 1 . That is, in this embodiment, the first end 61 is a guide to guide the development. Device 1 was successfully installed on the drum box. The second end portion 62 can receive the urging force exerted by the drum cartridge 2 , that is, in this embodiment, the second end portion 62 is a urging portion, so that the developing roller 20 and the photosensitive drum 92 are in close contact.

As shown in Figure 11, the first assembly 60 includes a connecting arm 63a, which is located between the first end 61 and the second end 62; and when viewed along the first direction, the size of the connecting arm 63a is smaller than that of the second end. The size of the first end 61 and/or the second end 62, that is, the size of the connecting arm 63a, may be smaller than the size of the first end 61 or the second end 62, or may be smaller than both sizes. In addition, the connecting arm 63 a is further away from the third end of the box body 10 than the first end 61 is away from the third end of the box body 10 .

According to this embodiment, as shown in FIG. 11 , the first end 61 and the second end 62 are integrally formed, however, the first end 61 and the second end 62 may also be separate components. The first assembly part 60 has a first insertion hole and a first insertion hole 65 extending along the first direction in the first end 61 of the first assembly part 60. The first insertion hole 65 may be in the first The through hole that passes through the first end 61 in the first direction may also be a blind hole that does not pass through the first end 60. One end of the developing roller shaft in the first direction is inserted into the first insertion hole 65, so that the first The assembly 60 is rotatable relative to the cartridge body 10 about the development roller axis 22 , and more specifically, the second end 62 is pivotable relative to the first end 61 about the rotation axis of the development roller 20 . A fitting portion 66 is also provided at the second end 62 of the first assembly 60. The fitting portion 66 is partially located in the connecting arm 63a and between the first end 61 and the second end 62. The fitting portion 66 is relative to The first end 61 is disposed closer to the second end 62 , and the fitting portion 66 is an arc-shaped protrusion and protrudes toward the direction of the first end 61 .

The first assembly 60 can be used as a conductive member to electrically connect with the developing roller 22 . The first assembly 60 is made of conductive resin, metal or other conductive materials. The first end 61 of the first assembly 60 is in contact with one end of the developing roller shaft 22 in the first direction, whereby the first end 61 of the first assembly 60 is electrically connected to the developing roller 22 .

As shown in FIGS. 9 and 10 , the action member 110 is located at the first end 11 of the box body 10 . The action member 110 has a force receiving part 111, a force applying part 112, and a cam surface 113. The force-receiving portion 111 is located at one end of the action member 110 in the third direction, and the third direction intersects the first direction and the second direction. The force applying part 112 is located at the other end of the action member 110 in the third direction. The cam surface 113 is located between the force receiving part 111 and the force applying part 112 in the third direction. The force-receiving part 111 and the force-applying part 112 may be configured as arc-shaped protrusions with a certain arc-shaped cylindrical surface, and the force-applying part 112 protrudes generally toward the direction of the second end 62 .

As shown in FIGS. 14 and 15 , the action member 110 is movable relative to the box body 10 . When the developing device 1 is mounted on the drum cartridge 2 , the cam surface 113 comes into contact with the drum frame 91 of the drum cartridge 2 . The action member 110 is pivotable about or close to the cam surface 113 between the first position and the second position. The arc-shaped cylindrical surface on the force applying portion 112 of the action member 110 is in two positions of contact or non-contact with the matching portion 66 of the first assembly member 60 . Among them, the acting member 110 can be fixed on the first end 11 of the box body 1 through the fixing rod 120; or there can be no fixing member 120, and the acting member 110 can be fixed on the first end 11 by screws near the cam surface 113 to prevent The action member 110 falls off.

As shown in FIG. 8 , the second assembly 70 is located at the second end 12 of the box 10 . Other structures of the second end 12 are the same as those of the first end 11 and will not be described again here.

As shown in FIG. 14 , in the process of mounting the developing device 1 to the drum cartridge 2 , the developing device 1 moves relative to the drum cartridge 2 so that the developing roller 20 moves close to the photosensitive drum 92 . The first collective member 60 and the second collective member 70 pivot about the rotation axis of the developing roller 20 . The first assembly member 60 can be placed between the photosensitive drum 92 and the first pressing member 95 , that is, the second end 62 can receive the urging force exerted by the first pressing member 95 to move the developing roller 20 toward the direction of the photosensitive drum 92 , so that the developing roller 20 and the photosensitive drum 92 are in close contact. At this time, the second end 62 of the first assembly member 60 has not yet contacted the first pressing member 95, and the first spring 96 has not yet been pressed. The second end 61 of the developing device 1 is movable along the track formed between the first guide surface 93 and the second guide surface 94 . At this time, the force applying portion 112 of the action member 110 and the matching portion 66 may or may not be in contact.

As shown in FIG. 15 , when the first collective member 60 is placed between the photosensitive drum 92 (not shown) and the first pressing member 95 , the first pressing member 95 contacts the second end portion 62 of the first collective member 60 , at this time, the first pressing member 95 presses the second end 62 of the first assembly 60 toward the photosensitive drum 92 through the elastic force of the first spring 96 , that is, in this embodiment, the second end 62 serves as a pushing portion to receive the drum. The urging force exerted by the cartridge 2 brings the developing roller 20 into close contact with the photosensitive drum 92 . The first end 61 of the first assembly member 60 is in contact with the first guide surface 93 and the second guide surface 94 and plays a guiding role during the installation of the developing device 1. In this way, the first assembly member 60 is positioned relative to the drum frame 91. The location is fixed. At this time, the force applying part 112 and the matching part 66 of the action member 110 may be in contact or not in contact.

When the developing roller 20 and the photosensitive drum 92 need to be temporarily separated during the printing process, the electronic imaging device applies a separation force F to the force-receiving part 111 of the action member 110. As shown in FIG. 15, the separation force F is applied to the force-receiving part of the action member 110. 111, the separation force F presses the force-receiving part 111 of the action member 110, and the action member 110 pivots from the first position to the second position around the cam surface 113. At this time, the force applying part 112 of the action member 110 moves in the direction away from the photosensitive drum 92 and presses the fitting part 66 of the first assembly 60. At this time, the force applying part 112 and the fitting part 66 (arc-shaped protrusion) are Contact and exert a separation force on the mating part 66, so that the first assembly part 60 moves following the movement of the action part 110, and at the same time, the first assembly part 60 causes the first pressing part 95 to move under pressure, thereby compressing the first spring 96, That is, after the second end portion 62 of the first assembly member 60 is acted upon by the force applying portion 112 of the action member 110 , it can rotate around the rotation axis of the developing roller 20 , and at the same time, the first assembly member 60 moves between the first guide surface 93 and The track formed between the second guide surfaces 94 moves in a direction away from the photosensitive drum 92 , thereby driving the developing device 1 to move in a direction away from the photosensitive drum 92 . That is, in this embodiment, the first assembly 60 receives the separation force and causes the developing roller to move in a direction away from the photosensitive drum 92 . 20 is out of contact with the photosensitive drum 92 . In other embodiments, after the second end portion 62 of the first collection member 60 is acted upon by the force applying portion 112 of the action member 110 , the first collection member 60 does not rotate relative to the developing device 1 , but cooperates with the developing device 1 sports.

When it is necessary to print again, the electronic imaging device cancels the separation force F exerted on the force-receiving part 111, so that the force-applying part 112 no longer exerts a separation force on the mating part 66. Under the combined force of the developing device 1's own gravity and the first spring 96, Under the action, the developing device 1 moves closer to the photosensitive drum 92 again, and the developing roller 20 is in close contact with the photosensitive drum 92 .

It can be seen that in this embodiment, the first pressing member 95 and the first spring 96 are conductive, and the drum box 2 also includes an electrode. The electrode is in electrical contact with the first spring 96 and in contact with the electrode terminal in the electronic imaging device. , the power of the electronic imaging device is supplied to the developing roller 20 via the drum cartridge 2 electrode, the first spring 96 , the first pressing member 95 , and the first collective member 60 .

Embodiment 3

This embodiment discloses a developing device, which is different from Embodiment 1 and Embodiment 2 in that the structures of the assembly part and the action part are different.

As shown in Figure 16, in this embodiment, the collection piece includes a first collection piece 60 and a second collection piece 70. The first collection piece 60 is disposed on the first end 11 of the box body 10, and the second collection piece is disposed on the box body. At the second end 12 of 10, the first assembly 60 may be considered an electrode.

As shown in FIGS. 16 and 17 , the first assembly 60 includes a first end 61 , a connecting arm 63 a , and a second end 62 . The first end 61, the connecting arm 63a, and the second end 62 are all made of conductive materials, such as metal or conductive resin. It can be seen that in this embodiment, the first end portion 61, the second end portion 62 and the connecting arm 63a are assembled through connection to form the first assembly 60, wherein the second end portion 62 and the connecting arm 63a can be integrally formed. Can be split.

During the process of installing the developing device 1 to the drum box, the first end 61 contacts the drum frame 91 and plays a role in guiding and installing the developing device 1, so that the developing device 1 is successfully installed on the drum box 2, that is, the first end of this embodiment The end portion 61 is a guide portion for guiding the mounting of the developing device 1 . The second end portion 62 serves as a urging portion to receive the urging force exerted by the drum cartridge 2 so that the developing roller 20 and the photosensitive drum 92 are in close contact. The first end 61 has a first insertion hole 65 for inserting the end of the developing roller 20 . The first end 11 of the box body 10 is integrally formed with a positioning shaft 18 extending in the first direction. A groove 611 is integrally formed on the end of the first end 61 away from the developing roller 20 in the second direction. The groove 611 has a second hole 612 for the positioning shaft 18 to be inserted. The first end 61 is limited by the end of the developing roller 20 and the positioning shaft 18 to remain fixed and unable to rotate around the rotation axis of the developing roller 20 . The fixed design of the first end 61 can ensure that the first end 61 does not have poor contact with the end of the developing roller 20 due to movement. For example, it can be avoided that the inner diameter of the first insertion hole 65 increases after frequent rotation, resulting in poor contact with the end of the developing roller 20 .

As shown in Figure 17, the connecting arms 63a are a pair of plate-shaped members spaced apart in the first direction. One end of the connecting arm 63a extends into the groove 611. The surface of the connecting arm 63a is in close contact with the inner surface of the groove 611. The other end of the connecting arm 63a is integrally formed with a second end portion 62 .

As shown in FIGS. 16 and 17 , the side of the second end 62 away from the developing roller 20 is the first force-bearing surface. In this embodiment, the first force-bearing surface is configured as a curved surface. The first force-bearing surface may also be configured as Plane to increase the contact area and ensure good current conductivity. The first force-bearing surface is used to contact the first pressing member 95 on the drum box and bear the urging force exerted by the first pressing member 95 and receive the current derived through the first spring 96 and the first pressing member 95 . The side of the second end portion 62 close to the developing roller 20 is a second force-bearing surface, and the second force-bearing surface is also called the matching portion 66 . In the second direction, the second force-bearing surface is located between the first end 61 and the first force-bearing surface.

As shown in FIG. 16 , a fixing part 120 is installed on the first end of the box body 10 , and an action part 110 is installed on the fixing part 120 . The action member 110 can swing within the fixed member 120 . The third upper end of the acting member 110 is a force-receiving part 111 , and the lower end of the acting member 110 is a force-applying part 112 . The force-receiving portion 111 is used to receive the separation force exerted by the electronic imaging device. The force-applying portion 112 extends between the plate-shaped members constituting the connecting arm 63a. The force-applying portion 112 is used to apply a separation force to the second force-receiving surface. A cam surface 113 is integrally formed on the acting member 110 between the force-receiving part 111 and the force-applying part 112. The cam surface 113 can be used as a fulcrum to contact the drum box 2 and support the swinging of the acting member 110. When the force receiving portion 111 receives the separation force exerted by the electronic imaging device, the action member 110 swings around the cam surface 113 .

In other embodiments, the first assembly 60 may move linearly. In another embodiment, the structure of the action member 110 may be the same as that in the first embodiment, and the matching portion 66 of the first assembly member 60 may be the same as the structure in the first embodiment.

The following is the working process of the developing device 1 disclosed in this embodiment. First, the developing device 1 is installed on the drum cartridge in the electronic imaging device. The coupling 41 receives the power output from the electronic imaging device and drives the developing roller 20, the powder feeding roller, and the stirring frame to rotate through the transmission assembly.

As shown in Figures 16 and 17, when printing is completed, the electronic imaging device no longer outputs power, so the developing roller 20, the powder feeding roller, and the stirring frame stop rotating. At this time, the electronic imaging device applies a separation force F1 to the force-receiving portion 111 of the acting member 110. Since the cam surface 113 contacts the drum cartridge, the force-receiving portion 111 of the acting member 110 swings around the cam surface 113 in a direction closer to the developing roller 20. At the same time, the force-applying portion 112 of the action member 110 swings around the cam surface 113 in a direction away from the developing roller 20 , thereby exerting a separation force F2 on the second force-bearing surface on the second end portion 62 in a direction away from the developing roller 20 . Then, the separation force experienced by the second end 62 is transmitted to the first end 61 through the connecting arm 63a, and the first end 61 is transmitted to the entire developing device through the positioning shaft 18 and the developing roller 20, so that the entire developing device is moved by the second end. The portion 62 is driven to move away from the photosensitive drum, so that there is no longer contact between the photosensitive drum and the developing roller 20 . At the same time, since the first spring 96 is installed between the first pressing member 95 and the frame 91, the first pressing member 95 is displaced under the action of the separation force F2 and compresses the first spring 96, so the first pressing member 95 will not block Movement of second end 62 .

When the electronic imaging device starts printing again, the electronic imaging device outputs power to the coupling 41, and the electronic imaging device stops exerting the separation force F1 on the force-receiving portion 111 of the acting member 110, so the force-applying portion 112 of the acting member 110 no longer exerts force on the coupling 41. The first pressing member 95 applies thrust F2. At this time, under the action of the developing device's own gravity, the developing device returns to its original position, causing the developing roller 20 to re-contact with the photosensitive drum. At the same time, under the elastic force of the first spring 96 , the first pressing member 95 moves upward to the second end 62 The first force-bearing surface exerts a urging force in the direction close to the photosensitive drum, so that the first assembly member 60 drives the developing device, and then the developing roller 20 is in close contact with the photosensitive drum.

At the same time, the voltage output by the electronic imaging device is transmitted to the first spring 96 , and then transmitted to the second end 62 via the first pressing member 95 . The second end 62 conducts electrical energy to the developing roller 20 through the connecting arm 63a and the first end 61 . Moreover, since the first spring 96 is provided, the first pressing member 95 and the second end portion 62 are always in contact.

Through the above technical solution, it is possible to connect the developing roller and provide voltage to the developing roller, so that multiple functions such as contact or separation between the developing roller and the photosensitive drum are integrated on the first assembly, simplifying the installation cooperation relationship and the number of parts of the developing box. When manufacturing the developing box, the production process is simpler, the production efficiency is higher, the time economic cost is reduced, and greater economic benefits are created.

Embodiment 4

This embodiment provides a developing device 1. Compared with the first to third embodiments, the difference lies in the structures of the assembly part and the action part.

As shown in Figure 18, in this embodiment, the collection piece includes a first collection piece 60 and a second collection piece 70. The first collection piece 60 is disposed on the first end 11 of the box body 10, and the second collection piece is disposed on the box body. At the second end 12 of 10, the first assembly 60 may be considered an electrically conductive electrode.

As shown in FIGS. 20 and 23 , the first assembly 60 is located at the first end 11 of the box 10 . The first assembly 60 is rotatably mounted on the other end of the developing roller shaft 22 in the first direction. The assembly 60 may support the developing roller shaft 22 , or may only contact but not support the developing roller shaft 22 . The first collection piece 60 has a first end portion 61 and a second end portion 62. The first collection piece 60 extends in the second direction between the first end portion 61 and the second end portion 62. The second end portion 62 is opposite to the first end portion 61 and the second end portion 62. It is further away from the developing roller 20 than the first end 61 , and the second end 62 is further away from the third end of the box body 10 than the first end 61 . During the process of installing the developing device 1 to the drum box, the first end 61 contacts the drum frame 91 and plays a role in guiding and installing the developing device 1 so that the developing device 1 is successfully installed on the drum box. That is, in this embodiment, the first end portion 61 is installed on the drum box. One end 61 can be regarded as a guide. The second end portion 62 can serve as a urging portion to receive the urging force exerted by the drum cartridge 2 so that the developing roller 20 and the photosensitive drum 92 are in close contact.

The first assembly 60 also includes a first arm 63 and a second arm 64. The second arm 64 is farther from the developing roller 20 than the first arm, and the second arm 64 is farther from the cartridge body 10 than the first arm 62. The third end is also farther; in this embodiment, the first end 61 and the second end 62 are formed integrally. However, the first end 61 and the second end 62 can also be separate structures. In this case, the first end 61 and the second end 62 can be fixed and connected to each other.

The first collection piece 60 further includes a first insertion hole 65 extending in the first end 61 of the first collection piece 60 along the first direction. The first insertion hole 65 may be a through hole that passes through the first end 61 in the first direction. The first insertion hole 65 may also be a blind hole that does not pass through the first end 61 . The developing roller shaft 22 is in the first direction. One end in the direction is inserted into the first insertion hole 65 . The first assembly 60 is rotatable relative to the cartridge body 10 about the developing roller shaft 22 . More specifically, the second end 62 is pivotable relative to the first end 61 about the rotation axis of the developing roller 20 .

The first assembly 60 serves as a conductive member and is electrically connected to the developing roller 20, and therefore may also be called a developing electrode. The first assembly 60 may be made of conductive materials such as conductive resin, metal, etc., and is not specifically limited here.

The first assembly 60 also has a fitting portion 66 , which is provided on the second arm 64 . In this embodiment, the fitting portion 66 is a first hole 66 . The first hole 66 is located between the first end 61 and the second end 62 in the second direction. The first hole 66 does not have to completely penetrate the first assembly 60 . In the third direction, the upper end of the first hole 66 penetrates The lower end of the first assembly member 60 and the first hole 66 may or may not penetrate the first assembly member 60 . In this embodiment, the structure of the first hole 66 is approximately a rectangular structure. Alternatively, the shape of the first hole 66 may be a regular polygonal structure or an irregular special-shaped structure, which is not specifically limited.

As shown in Figure 20, the action member 110 is provided at the first end 11 of the box body 10. The action member includes a first translation member 130 and a second translation member 140. The first translation member 130 and the second translation member 140 It can move relative to the box body 10 . The first end 11 of the box body 10 also has a first slide rail 15 and a second slide rail 16 . In this embodiment, the first slide rail 15 extends along the second direction. Alternatively, the first slide rail 15 can also be provided along a direction that is not parallel to the second direction. The second slide rail 16 forms an angle with the first slide rail 15 . In this 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 slide rail 15, the second translation member 140 is installed at the position of the second slide rail 16, and the first translation member 130 is movable relative to the first slide rail 15. The two translation parts 140 are movable relative to the second slide rail 16 , that is, the first translation part 130 and the second translation part 140 are movable relative to the box body 10 , and the movement mode is linear movement. Optionally, the movement mode may also be a curved movement. In other embodiments, the first slide rail 15 and the second slide rail 16 can be configured as a connected U-shaped or V-shaped slide rail, and a translational component is installed in the slide rail. When the translational component is stressed, it moves along the The slide rail moves, and the translational part can move in a curve or a linear motion.

Among them, as shown in Figure 21, the first translation member 130 is a block-shaped member. The first translation member 130 includes a third force-bearing surface 131, a third force-applying surface 132 and a first mounting part 133. The surface 131 and the third force-applying surface 132 are respectively located at both ends of the first translation member 130 in the second direction; as shown in Figure 22, the second translation member 140 is a rod-shaped member, and the second translation member 140 includes The fourth force-receiving surface 141 , the force-applying part 112 and the second mounting part 143 are respectively located at both ends of the second translation member 140 in the third direction. In this embodiment, the third force-applying surface 132 and the fourth force-receiving surface 141 are inclined surfaces or arcuate surfaces, and the force is transmitted through the contact between the inclined surface and the inclined surface or the contact between the inclined surface and the arcuate surface or the contact between the arcuate surface and the arcuate surface. In this embodiment, the first translational member 130 is the force-receiving portion of the acting member of the third force-bearing surface 131 that receives external force, and the second translational member 140 is the acting member of the third force-bearing surface 131 that transmits the external force to the first assembly member 60 . Force 112. In this embodiment, the first mounting portion 133 is disposed on the surface of the first translating member 130 facing the box body 10 , and the second mounting portion 143 is disposed on the surface of the second translating member 140 facing the box body 10 . The mounting part 133 and the second mounting part 143 are both T-shaped, and the first slide rail 15 and the second slide rail 16 at their corresponding mounting positions are corresponding inverted T shapes, so the first slide rail 15 allows the first flat The moving member 130 is movable relative to the box body 10 and can also prevent the first translation member 130 from falling off the first slide rail 15; similarly, the second slide rail 16 allows the second translation member 140 to be relatively opposite along the second slide rail 16. It is movable in the box body 10 and can prevent the second translation member 140 from falling off the second slide rail 16 . Optionally, the first mounting part 133 and the second mounting part 143 can also be set in other shapes, for example, they can also be set in a rectangular shape. In this case, the first slide rail 15 and the second slide rail 16 are set in corresponding shapes. In this case, To prevent the first translation member 130 and the first translation member 110 from falling off the box body 10 , a fixing member may be provided at a position further away from the box body 10 than the first translation member 130 and the first translation member 110 .

As shown in Figures 21 to 23, the third force-bearing surface 131 is used to receive the separation force from the electronic imaging device, so that the first translation member 130 moves along the extension direction of the first slide rail 15; in the third direction, the first The translation member 130 is at least partially located above the second translation member 140. Therefore, the third force-applying surface 132 is in contact with the fourth force-bearing surface 141. When the first translation member 130 is forced to move, the fourth force-bearing surface 141 141 receives the separation force from the first force-applying surface 143, so that the second translation member 140 moves along the extension direction of the second slide rail 16. The force applying part 112 is placed in the first hole 66, and the force applying part 112 contacts the inner surface 662 (shown in FIG. 24) of the first hole 66, so that the second translation member 140 drives the first assembly during movement. The member 60 produces a swing motion or a linear motion, thereby causing the developing device 1 to move.

The second collection piece 70 is located at the second end 12 of the box body 10 , and the first collection piece 60 and the second collection piece 70 are positioned to overlap each other when viewed from the first direction. The second collective member rotatably supports the other end of the developing roller shaft 22 . Other structures of the second end 12 are similar to the first end structure 11 in structure and working principle, and will not be described in detail here. In other embodiments, the first collection piece 60 and the second collection piece may not be positioned to overlap each other when viewed from the first direction, or only one collection piece may be provided.

As shown in FIG. 23 , during the process of installing the developing device 1 on the drum cartridge 2 and during the process of removing the developing device 1 from the drum cartridge 2 , the developing device 1 moves relative to the drum cartridge 2 so that the developing roller 20 Move closer to the photosensitive drum 92 or further away from the photosensitive drum 92 . The first guide surface 93 and the second guide surface 94 guide the first end 61 and the third guide surface and the fourth guide surface guide the second assembly 70 to place the first assembly 60 on the photosensitive The second assembly 70 is placed between the photosensitive drum 92 and the second pressing member 95 or is removed from therebetween.

As shown in FIG. 24 , when the developing device 1 is installed on the drum cartridge 2 , the first pressing member 95 presses the developing device 1 toward the photosensitive drum 92 through the second end 62 of the first assembly member 60 through the tension of the first spring 96 , that is, in this embodiment, the second end portion 62 is a pushing portion, which is used to receive the pushing force exerted by the drum cartridge 2 so that the developing roller 20 is in close contact with the photosensitive drum 92 . The first end 61 of the first assembly member 60 is in contact with the first guide surface 93 and guides the installation of the developing device 1 , and the other part of the first assembly member 60 is in contact with the second guide surface 94 . In this way, the position of the first assembly part 60 relative to the drum frame 91 is fixed; similarly, the position of the second assembly part 70 relative to the drum frame 91 is also fixed. At this time, the first pressing member 95 presses the first collective member 60 , the second pressing member presses the second collective member 70 , and the outer circumferential surface of the developing roller 20 contacts the outer circumferential surface of the photosensitive drum 92 . The force applying part 112 of the second translation member 140 is engaged with the inner surface 662 of the first hole 66. Specifically, in this embodiment, the force applying part 112 and the inner surface 662 face each other in the second direction. Optional , the size of the force applying part 112 can also be enlarged, so that the force applying part 112 is engaged with the inner surface 662 in both the second direction and the third direction, so as to make the force transmission process more stable during the working process.

When the developing device 1 mounted on the drum cartridge 2 shown in Figure 24 is installed in the electronic imaging device, the electrodes on the drum cartridge 2 are in contact with the electrode terminals in the electronic imaging device, and due to the first spring 96, the first pressing force The member 95 and the first assembly member 60 are both made of conductive materials, so the power of the electronic imaging device is supplied to the developing roller 22 through the electrodes, the first spring 96 , the first pressing member 95 and the first assembly member 60 .

As shown in Figure 25, when the developing roller 20 and the photosensitive drum 92 need to be temporarily separated during the printing process, the electronic imaging device applies a separation force F to the third force-bearing surface 131, causing the first translation member 130 to perform translational movement. When the third force-applying surface 132 applies a separation force to the fourth force-bearing surface 141, the second translation member 140 makes a translational movement in another direction that is at an angle with the first translation member 130, thereby causing the force-applying part 112 to The inner surface 662 of the first hole 66 exerts a separation force, and the first assembly 60 moves in a direction away from the photosensitive drum 92 under the force. As a result, the first pressing member 95 is pressed, thereby compressing the first spring 96 , and the first assembly member 60 moves in the direction away from the photosensitive drum 92 on the track formed between the first guide surface 93 and the second guide surface 94 , and then The box body 10 is driven to move together, so that there is a gap between the developing device 1 and the drum box 2 in the second direction. Specifically, the developing roller 20 and the photosensitive drum 92 are not in contact, and there is a gap between them.

In this embodiment, the movement trajectories of the first translation member 130 and the second translation member 140 are guided and limited by the first slide rail 15 and the second slide rail 16 , so that during the working process of the developing device 1 The transmission of force between them is more stable.

Embodiment 5

As shown in FIG. 26 , this embodiment provides a developing device 1 , which is different from the first to fourth embodiments in that the assembly has a different structure and also includes a developing electrode.

In this embodiment, the first assembly is not used to transmit the bias voltage to the developing roller 22 . Therefore, the first assembly may not be made of conductive material. The assembly includes the first end 11 and the first end 11 respectively provided on the box body 10 . The first collection piece 60 and the second collection piece 70 of the second end 12 . During the process of installing the developing device 1 to the drum box, the first end 61 contacts the drum frame 91 and plays a role in guiding and installing the developing device 1, so that the developing device 1 is successfully installed on the drum box, that is, the first end in this embodiment The end portion 61 is a guide portion.

As shown in FIG. 26 , the first assembly 60 is located at the first end 11 of the box body 10 . The first assembly member 60 rotatably supports one end of the developing roller 20 in the first direction, or does not rotate as the assembly member of the developing roller 20 supports the first end 11 of the developing roller 20 in the first direction of the box body 10, Or it is only in contact with the developing roller 20 without supporting it. Further, the first assembly 60 has a first end 61 and a second end 62 . The second end 62 is farther from the developing roller shaft 22 than the first end 61 . In addition, the second end portion 62 is farther away from the third end of the box body 10 in the second direction than the first end portion 61 is away from the third end of the box body 10 in the second direction. The first collection piece 60 extends along the first end 11 of the box 10 between the first end 61 and the second end 62 . The first assembly 60 includes a connecting arm 63a, which is located between the first end 61 and the second end 62; and when viewed along the first direction, the size of the connecting arm 63a is smaller than that of the first end 61 and/or or the size of the second end 62. In addition, the connecting arm 63 a is further away from one end of the box body 10 in the second direction than the first end 61 is away from the one end in the second direction. The first insertion hole 65 on the first assembly 60 is sleeved on the developing roller shaft 22 . The second end portion 62 is in the form of an arc-shaped hook portion (the second end portion 62 is also a matching portion in this embodiment). The first insertion hole 65 extends in the first direction in the first end 61 of the first collection piece 60 . The first insertion hole 65 may be a through hole that passes through the first end 61 in the first direction, or it may be a blind hole that does not pass through the first end 61 . One end of the developing roller shaft in the first direction is inserted into the first insertion hole 65 . The first is inserted into hole 65 . As shown in Figure 26, a pushing portion 67 and a positioning member 68 are also provided on the first end 11 of the box body 10 in the first direction, and the pushing portion 67 and the positioning member 68 are both moved away from the box in the first direction. The first end 11 of the body 10 protrudes in one direction, and the urging portion 67 is a block for receiving the urging force exerted by the drum cartridge 2. In the second direction, the urging portion 67 is located on a side of the box body 10 away from the developing roller 20. side. The positioning member 68 is a block-shaped member. In the second direction, the positioning member 68 is closer to the third end of the box body 10 than the pushing portion 67 . In the second direction, the second end 62 is located between the urging portion 67 and the first end 61 .

As shown in Figure 26, the developing electrode 80 is a strip-shaped member, including a first end 81 of the developing electrode and a second end 82 of the developing electrode. The developing electrode 80 extends along the second direction. The first end 81 of the developing electrode 80 is close to the cartridge. One end of the third end of the box body 10 , the second end 82 of the developing electrode is further away from the third end of the box body 10 than the first end 81 of the developing electrode. The first end 81 of the developing electrode is electrically connected to the developing roller shaft 22. Specifically, a third hole can be opened on the first end 81 of the developing electrode, and it can be sleeved on the developing roller shaft 22 through the third hole. The second end 82 of the developing electrode can be sleeved on the developing roller shaft 22. It is provided on the pushing part 67 and is detachably connected to the pushing part 67. Specifically, a fourth hole can be opened on the second end 82 of the developing electrode, and the fourth hole can be sleeved on the pushing part 67. Alternatively, the developing electrode 80 and the pushing part are made of conductive material, and the developing electrode 80 and the pushing part are jointly fixed on the box body 10 . The developing electrode 80 is closer to the first end 11 of the box 10 than the first assembly 60 , that is, the developing electrode 80 is located inside the first assembly 60 .

As shown in FIG. 26 , the action member 110 is located at the first end 11 of the box body 10 . The action member 110 has a force receiving part 111, a force applying part 112, and a cam surface 113. The force-receiving part 111 is located at one end of the acting member 110 in the third direction, and the force-applying part 112 is located at the other end of the acting member 110 in the third direction. The cam surface 113 is located between the force receiving part 111 and the force applying part 112 in the third direction. The force-receiving part 111 and the force-applying part 112 may be arranged as cylindrical surfaces with a certain arc shape.

As shown in FIGS. 28 to 31 , the action member 110 is movable relative to the box body 10 . The action part 110 can be fixed on the first end 11 of the box body 1 through the fixing part 120; as shown in Figure 27, there may be no fixing part 120, and the action part 110 can be fixed on the first end 11 of the box body 1 through the screw A120 near the cam surface 113. Go to terminal 11. Preventing the action member 110 from falling off from one side in the third direction also makes the action member 110 moveable relative to the box body 10 .

The cam surface 113 is in contact with the drum frame 91 of the drum cartridge 2 (shown in Figure 28). The action member 110 is pivotable about the cam surface 113 or a point near the cam surface 113 between the first position and the second position. The arc-shaped cylindrical surface of the force-applying portion 112 of the action member 110 and the arc-shaped hook (second end portion 62) of the first assembly member 60 are in two positions: working or inactive.

When the developing device 1 is installed on the drum cartridge 2 , the first pressing member 95 presses the pressing portion 67 toward the photosensitive drum 92 through the elastic force of the first spring 96 . In addition, the drum box 2 includes a second pressing member (not shown) and a second spring (not shown).

Specific instructions for installing, fixing and disassembling the developing device and drum cartridge:

As shown in FIG. 29 , when the developing device 1 is installed on the drum cartridge 2 and is not completely in position, the developing device 1 moves relative to the drum cartridge 2 so that the developing roller 20 moves close to the photosensitive drum 92 . The first collective member 60 and the second collective member 70 pivot or do not rotate about the rotation axis of the developing roller 20 . The first collective member 60 is between the photosensitive drum 92 and the first pressing member 95 , and the electronic imaging device can move the developing roller 20 close to the photosensitive drum 92 . At this time, the pushing portion 67 has not yet completely interfered with the first pressing member 95 , and the first spring 96 has not yet been compressed and deformed. The first end portion 61 of the first collection member 60 can move along the track formed between the first guide surface 93 and the second guide surface 94 , at this time, the force applying portion 112 of the action member 110 and the third collection member 60 The two ends 62 (arc-shaped hook parts) may not be in contact. At this time, the positioning member 68 has not yet contacted the second guide surface 94 of the drum box 2 . The acting member 110 does not receive external acting force.

As shown in FIG. 30 , when the developing device 1 continues to be placed into the drum cartridge 2 and the first assembly 60 is placed between the photosensitive drum 92 and the first pressing member 95 , the first pressing member 95 contacts the urging portion 67 . The first spring 96 is in a compressed state and exerts a urging force on the urging portion 67 to bring the developing roller 20 of the developing device 1 into contact with the photosensitive drum 92 . At this time, the first pressing member 95 presses the pressing portion 67 toward the photosensitive drum 92 by the elastic force of the first spring 96 . Then the first end 61 of the first collection piece 60 is in contact with the first guide surface 93 and the other part of the first collection piece 60 is in contact with the second guide surface 94 . At the same time, the positioning member 68 contacts the second guide surface 94 of the drum box 2 . In this way, the position of the developing device 1 relative to the drum frame 91 is fixed. Thus, the cooperation between the developing device 1 and the drum cartridge 2 is realized, thereby achieving normal printing work.

When the developing roller 20 and the photosensitive drum 92 need to be temporarily separated during the printing process, the electronic imaging device applies a separation force to the force-receiving part 111 of the action member 110. As shown in FIG. 31, the separation force F is applied to the force-receiving part 111 of the action member 110. , the separation force F presses the force-receiving part 111 of the action member 110, and the action member 110 pivots from the first position to the second position around the cam surface 113. At this time, the force applying portion 112 of the action member 110 moves in a direction away from the photosensitive drum 92 and presses the second end portion 62 (arc-shaped hook portion) of the first assembly 60. At this time, the force applying portion 112 is in contact with the arc-shaped hook portion. The hook parts are in contact. Thereby, the first assembly member 60 is forced, and the first assembly member 60 drives the developing device 1 to move in the direction away from the photosensitive drum 92 along the track formed between the first guide surface 93 and the second guide surface 94 . At the same time, after the second end portion 62 of the first assembly member 60 is acted upon by the force applying portion 112 of the acting member 110 , it can rotate around the rotation axis of the developing roller 20 or the force applying portion 112 and the arc-shaped hook portion rotate, or the first The assembly member 60 moves linearly, thereby causing the urging portion 67 to separate from the first pressing member 95 . At this time, the first spring 96 is in a compressed state, and the developing roller 20 gradually breaks away from the photosensitive drum 92 . Through the above arrangement, the developing electrode used to provide the bias voltage for the developing roller will not move relative to the cartridge body, which will prevent poor power supply due to the movement of the developing electrode, and the developing roller 20 and the photosensitive drum 92 can be connected in a stable manner. Disengage.

What is described above are only some embodiments of the present invention. For those of ordinary skill in the art, several modifications and improvements can be made without departing from the creative concept of the present utility model, and these all belong to the protection scope of the present utility model.

Claims (16)

1. A developing device detachably mounted on an electronic imaging device including a drum cartridge, the drum cartridge including a drum frame and a photosensitive drum, characterized in that the developing device includes: A box body containing developer inside, the box 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 the third end of the box body, the developing roller including a developing roller shaft extending along the first direction; The action member is movably provided on the box body and includes a force-receiving part and a force-applying part. The force-receiving part can receive the separation force exerted by the electronic imaging device, and the force-applying part is used to transmit the separation force, a guide part, which is in contact with the drum frame and used to guide the installation of the developing device, a pushing part, the pushing part is used to receive the pushing force exerted by the drum cartridge, so that the developing roller is in close contact with the photosensitive drum, A fitting part, the fitting part is used to receive the separation force transmitted by the force applying part, and the fitting part is located between the guide part and the pushing part in the second direction. 2. The developing device according to claim 1, wherein the fitting part is an arc-shaped protrusion; or the fitting part is a convex pillar; or the fitting part is a blind hole or a groove; or, The fitting part is an arc-shaped hook part. 3. The developing device according to claim 2, wherein the force applying part is a slot, or the force applying part is an arc-shaped protrusion, or the force applying part is an arc-shaped hook. . 4. The developing device according to claim 3, wherein the protruding pillar extends outward along the first direction, the engaging groove is a U-shaped groove, and the engaging groove is engaged with the protruding pillar. 5. The developing device according to claim 3, wherein the matching part and the force applying part cooperate in a hooking manner. 6. The developing device according to claim 1, wherein the action member includes at least one translational member, and the at least one translational member makes linear motion relative to the box body. 7. The developing device according to claim 6, wherein the action member includes a first translation member and a second translation member, the first translation member includes a force-receiving portion, and the first translation member When the moving member receives an external force and moves, it drives the second translation member to move, and the second translation member includes a force application part. 8. The developing device according to claim 7, wherein the first translation member and the second translation member are provided with inclined surfaces or arc surfaces, and the first translation member and the second translation member are provided with inclined surfaces or arc surfaces. The first translation member drives the second translation member through the contact between the inclined plane and the inclined plane, or the inclined plane and the arc surface, or the arc surface and the arc surface. 9. The developing device according to claim 7, wherein an included angle is formed between the movement direction of the first translation member and the movement direction of the second translation member. 10. The developing device according to claim 9, wherein the included angle is an acute angle. 11. The developing device according to claim 7, wherein the box body is provided with a first slide rail, the first translation member is provided with a first mounting portion, and the first translation member is The first mounting part is mounted on the first slide rail and can move relative to the first slide rail; The box body is provided with a second slide rail, the second translation member is provided with a second mounting portion, and the second translation member is installed on the second slide rail through the second mounting portion, And can move relative to the second slide rail. 12. The developing device according to claim 1, further comprising a first assembly member, the guide part, the pushing part and the fitting part are located on the first assembly member, the first assembly member Receiving the separation force exerted by the action member and moving, the movement of the first assembly member drives the developing device to move in a direction away from the photosensitive drum, so that the developing roller is separated from the photosensitive drum. 13. The developing device according to claim 12, wherein the first assembly is connected to the development roller, the first assembly is made of conductive material, and the first assembly receives an electronic imaging device transfers power to the developing roller. 14. The developing device according to claim 1, wherein the urging portion is located at the first end of the box body and extends outward along a first direction, and in the second direction, the urging portion faces opposite The mating portion is further away from the developing roller. 15. The developing device according to claim 1, further comprising a positioning shaft and a first assembly member, the first assembly member is connected to the developing roller, and the fitting portion is located on the assembly member, so The first assembly member receives the separation force exerted by the action member and moves. The movement of the first assembly member drives the developing device to move in a direction away from the photosensitive drum, causing the developing roller to separate from the photosensitive drum. , the positioning shaft protrudes outward along the first direction, the assembly is provided with a second hole and a first insertion hole connected to the developing roller shaft, and the second hole is larger than the first insertion hole in the second direction. Further away from the photosensitive drum, the positioning shaft is inserted into the second hole, and the first assembly can swing around the positioning shaft. 16. The developing device according to claim 1, further comprising a first collection piece, the fitting portion is located on the first collection piece, and the first collection piece receives the separation force exerted by the action member. It can then move relative to the developing device.