CN117270358A - Process cartridge and image forming apparatus - Google Patents

Abstract

The embodiment of the invention provides a processing box and an image forming device, and relates to the technical field of imaging. The processing box is detachably arranged in a device main body of the image forming device, the device main body comprises a frame body, a power-eliminating device and a shielding cover, the power-eliminating device is arranged on the frame body, the shielding cover is arranged on the frame body, and the shielding cover can move between a first position for shielding the power-eliminating device and a second position for exposing the power-eliminating device; the processing box is detachably provided with or integrally provided with a forced pushing mechanism. When the processing box is put into the device main body, the forced pushing mechanism pushes the shielding cover to move from the first position to the second position, so that the power-eliminating device can be exposed, and before the processing box is installed, the shielding cover can shield the power-eliminating device at the first position, so that the power-eliminating device is prevented from being polluted by dust or other impurities, the power-eliminating performance of the power-eliminating device can be improved, and the definition of a printed image can be ensured.

Description

Process cartridge and image forming apparatus

Technical Field

The present invention relates to the field of image forming technologies, and in particular, to a process cartridge and an image forming apparatus.

Background

A process cartridge for image formation is detachably mounted in an image forming apparatus, the process cartridge including a developing roller and a toner discharging blade, and a drum assembly including a photosensitive drum and a charging roller. When the image forming device works, the surface of the photosensitive drum is charged through the charging roller to be full of negative charges, the photosensitive drum is exposed by the laser scanning unit, an electrostatic latent image is formed on the photosensitive drum, a layer of carbon powder is uniformly distributed on the surface of the developing roller under the control of the powder discharging knife, the carbon powder on the developing roller is transferred onto the photosensitive drum by utilizing electric field force, at the moment, the electrostatic latent image on the surface of the photosensitive drum is changed into a visible carbon powder image, the carbon powder image on the surface of the photosensitive drum is transferred onto paper by utilizing electric field force, and then the image is fixed and discharged, so that the whole image process is completed. And finally, removing residual charges of the photosensitive drum before entering the whole process cycle of the next image.

In the related art, an image forming apparatus includes an apparatus main body to which a process cartridge is detachably mounted. The device main body comprises a extinction lamp, the processing box comprises a light guide column, and when residual charges of the photosensitive drum are subjected to neutralization, the light guide column guides light irradiated by the extinction lamp on the device main body to the photosensitive drum to carry out neutralization.

However, before the process cartridge is mounted, the exposed erasing lamps are easily contaminated with dust or other impurities, so that the erasing performance of the erasing lamps is reduced, resulting in uncleanness of cleaning residual charges of the photosensitive drum, and affecting the definition of the printed image.

Disclosure of Invention

The embodiment of the invention provides a processing box and an image forming device, which are used for solving the problems that the exposed extinction lamp is easy to be polluted by dust or other impurities, so that the extinction performance of the extinction lamp is reduced, the residual charge of a photosensitive drum is not cleaned cleanly, and the definition of a printed image is affected.

In a first aspect, an embodiment of the present invention provides a process cartridge detachably mounted in a device main body of an image forming device, the device main body including a frame, a power cancellation device mounted on the frame, and a shielding cover provided on the frame, the shielding cover being movable between a first position shielding the power cancellation device and a second position exposing the power cancellation device;

the processing box is detachably mounted or integrally provided with a forced pushing mechanism, and the forced pushing mechanism is configured to push the shielding cover to move from the first position to the second position when the processing box is installed in the device main body so as to expose the power-eliminating device.

In one possible embodiment, the urging mechanism is an urging projection extending along a length direction of the process cartridge, the urging projection having an urging surface that can urge the shielding cover to move.

In one possible embodiment, the pushing surface is a first plane which is obliquely arranged; or the forced pushing surface is a first cambered surface.

In one possible embodiment, the shielding cover includes a moving body having an engagement surface engaged with the urging surface, and the urging surface presses the engagement surface to urge the moving body to move during the process of loading the process cartridge into the apparatus body.

In one possible embodiment, the mating surface is a second plane that is disposed obliquely; or the forced pushing surface is a first cambered surface.

In one possible implementation manner, the moving body is provided with an avoidance groove matched with the forced pushing mechanism, and the matching surface is arranged in the avoidance groove; the frame body comprises a mounting plate, the shielding cover is slidably arranged on the mounting plate, and in the process of loading the processing box into the device main body, the forced pushing mechanism extrudes the shielding cover through the avoidance groove so that the shielding cover slides relative to the mounting plate.

In one possible embodiment, the mounting plate is provided with a slide extending in the height direction of the process cartridge, in which the shielding cover is slidable.

In one possible embodiment, a cleaning member is provided on the shielding cover on a side thereof adjacent to the power-off device, and the cleaning member wipes the power-off device during movement of the shielding cover between the first position and the second position.

In one possible embodiment, the frame body is provided with a reset member, and the reset member is configured to drive the shielding cover to move from the second position to the first position when the process cartridge is detached from the apparatus main body, so that the shielding cover shields the power-eliminating device.

In one possible embodiment, the device further comprises a light guide column and a photosensitive drum, wherein the light guide column and the photosensitive drum extend along the length direction of the processing box, the photosensitive drum is provided with a driving end, the driving end and the forced pushing mechanism are positioned on the same side of the processing box in the length direction of the processing box, and the forced pushing mechanism is closer to the light guide column relative to the photosensitive drum.

In one possible embodiment, the frame body includes a mounting plate having a through hole, and the light guide column and the power cancellation device are located on both sides of the through hole along a length direction of the process cartridge, respectively.

In a second aspect, an embodiment of the present invention provides an image forming apparatus including an apparatus main body and a process cartridge as described above;

the process cartridge is detachably mounted in the apparatus main body.

The embodiment of the invention provides a processing box and an image forming device, wherein the processing box is detachably arranged in a device main body of the image forming device, the device main body comprises a frame body, a power-eliminating device and a shielding cover, the power-eliminating device is arranged on the frame body, the shielding cover is arranged on the frame body, and the shielding cover can move between a first position for shielding the power-eliminating device and a second position for exposing the power-eliminating device; a pushing mechanism is detachably mounted on or integrally provided with the process cartridge, and is configured to push the shielding cover to move from the first position to the second position to expose the power cancellation device when the process cartridge is loaded into the device body. When the processing box is put into the device main body, the forced pushing mechanism pushes the shielding cover to move from the first position to the second position, so that the power-eliminating device can be exposed, and before the processing box is installed, the shielding cover can shield the power-eliminating device at the first position, so that the power-eliminating device is prevented from being polluted by dust or other impurities, the power-eliminating performance of the power-eliminating device can be improved, and the definition of a printed image can be ensured.

Drawings

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

Fig. 1 is a schematic structural view of an image forming apparatus according to an embodiment of the present invention;

FIG. 2 is a partially schematic illustration of the cartridge and urging mechanism of FIG. 1 removed from the apparatus body;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a partial schematic view of the process cartridge and urging mechanism of FIG. 1 installed in a device body;

FIG. 5 is an enlarged schematic view at B in FIG. 4;

FIG. 6 is a schematic view of the mounting plate of FIG. 2;

FIG. 7 is a schematic view of the shield cover and cleaning member of FIG. 2 from a first perspective;

FIG. 8 is a second view schematic illustration of the shield cover and cleaning member of FIG. 2;

FIG. 9 is a first view schematic diagram of the shielding cover of FIG. 2;

fig. 10 is a second view of the shielding cover of fig. 2.

Reference numerals illustrate:

10-a process cartridge; 11-a forced pushing mechanism; 111-pushing surface; 1111-a first end; 1112-a second end; 12-a light guide column; 13-a photosensitive drum; 131-driving end; 20-a frame; 21-a mounting plate; 211-a slideway; 212-a through hole; 213-fixing projections; 30-an electricity-eliminating device; 41-a shielding cover; 411-moving body; 4111-avoidance groove; 4112-mating face; 4113-sliding groove; 4114-connecting protrusions; 412-a connection plate; 42-cleaning member; 50-reset piece.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

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

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

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

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

In the related art, an image forming apparatus includes an apparatus main body to which a process cartridge is detachably mounted. The device main body comprises a extinction lamp, the processing box comprises a light guide column, and when residual charges of the photosensitive drum are subjected to neutralization, the light guide column guides light irradiated by the extinction lamp on the device main body to the photosensitive drum to carry out neutralization. However, before the process cartridge is mounted, the exposed erasing lamps are easily contaminated with dust or other impurities, so that the erasing performance of the erasing lamps is reduced, resulting in uncleanness of cleaning residual charges of the photosensitive drum, and affecting the definition of the printed image.

In order to solve the above problems, an embodiment of the present invention provides a process cartridge and an image forming apparatus, in which a pushing mechanism is detachably mounted or integrally provided on the process cartridge, and when the process cartridge is mounted in an apparatus main body, the pushing mechanism pushes a shielding cover to move from a first position to a second position, so that a power erasing device is exposed, and before the process cartridge is mounted, the shielding cover can be made to shield the power erasing device at the first position, so that the power erasing device is prevented from being contaminated by dust or other impurities, and thus the power erasing performance of the power erasing device can be improved, and further, the residual charges of a photosensitive drum can be cleaned cleanly, and the definition of a printed image is ensured.

The process cartridge and the image forming apparatus provided by the embodiments of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1 to 5, an embodiment of the present invention provides a process cartridge 10 detachably mounted in a device main body of an image forming device, the device main body including a frame 20, a power cancellation device 30, and a shielding cover 41, the power cancellation device 30 being mounted on the frame 20, the shielding cover 41 being provided on the frame 20, the shielding cover 41 being movable between a first position shielding the power cancellation device 30 and a second position exposing the power cancellation device 30; the process cartridge 10 is detachably mounted or integrally provided with a push mechanism 11, and the push mechanism 11 is configured to push the shielding cover 41 to move from the first position to the second position to expose the power cancellation device 30 when the process cartridge 10 is loaded into the device body.

As shown in fig. 1, the longitudinal direction of the process cartridge 10 is the X-axis direction, the width direction of the process cartridge 10 is the Y-axis direction, the height direction of the process cartridge 10 is the Z-axis direction, and the X-axis, the Y-axis, and the Z-axis are perpendicular to each other.

In fig. 2, the process cartridge 10, the mounting plate 21, the shielding cover 41, the cleaning member 42, and the reset member 50 are shown. As shown in fig. 2 and 3, the process cartridge 10 includes a housing, a light guide pole 12, a photosensitive drum 13, and a charging roller, the urging mechanism 11, the light guide pole 12, the photosensitive drum 13, and the charging roller are provided on the housing, and the light guide pole 12, the photosensitive drum 13, and the charging roller all extend along the length direction of the process cartridge 10.

The charging roller is used for charging the surface of the photosensitive drum 13, so that the surface of the photosensitive drum 13 is charged, and the region with the charge on the surface of the photosensitive drum 13 is convenient for adsorbing carbon powder particles. The apparatus main body includes a laser scanning unit, and the photosensitive drum 13 is exposed by the laser scanning unit, and an electrostatic latent image can be formed on the photosensitive drum 13.

The frame 20 is substantially square in shape. The process cartridge 10 is attachable to and detachable from the housing 20 of the apparatus main body in the-X axis direction, and the process cartridge 10 is detachable from the housing 20 in the +x axis direction.

The charge eliminating device 30 is a device that can eliminate residual charges on the photosensitive drum 13, for example, a charge eliminating lamp. As shown in fig. 4 and 5, when the residual charge on the photosensitive drum 13 is removed, the light irradiated from the light-removing device 30 is guided to the surface of the photosensitive drum 13 through the light-guiding column 12 to remove the residual charge on the photosensitive drum 13.

The shielding cover 41 may shield the power consumption device 30 before the process cartridge 10 is loaded into the device body, that is, when the shielding cover 41 is located at the first position, so that the power consumption device 30 may be kept clean. Specifically, the shielding cover 41 may shield dust or other impurities in the space where the process cartridge 10 is located in the apparatus main body.

The position of the shielding cover 41 in fig. 2 is a first position, and the position of the shielding cover 41 in fig. 4 is a second position. As shown in fig. 2, when the shielding cover 41 is located at the first position, the current eliminator 30 is shielded by the shielding cover 41, the light of the current eliminator 30 cannot pass through the shielding cover 41, the light of the current eliminator 30 cannot illuminate the position of the light guide column 12 in the main body of the device, and it can be understood that the position of the light guide column 12 in the main body of the device is not illuminated, and at this time, the current eliminator 30 is in a shielding state; as shown in fig. 4, when the shielding cover is located at the second position, the power cancellation device 30 is not shielded by the shielding cover 41, and the light of the power cancellation device 30 can illuminate the light guide column 12, and at this time, the power cancellation device 30 is in an exposed state. When the process cartridge 10 is mounted in the apparatus main body, the shielding cover 41 is located at the second position; after the process cartridge 10 is detached from the apparatus main body, the shielding cover 41 is located at the first position.

The urging mechanism 11 may be integrally formed with the process cartridge 10. In other modes, the urging mechanism 11 may be detachably mounted on the process cartridge 10, specifically, the urging mechanism 11 may be mounted on the process cartridge 10 by bolts, the urging mechanism 11 may be mounted on the process cartridge 10 by adhesion, and the urging mechanism 11 may be detachably mounted on the process cartridge 10 by other modes.

As shown in fig. 2 to 5, when the process cartridge 10 is loaded into the apparatus main body, the urging mechanism 11 urges the shielding cover 41 to move from the first position to the second position, and thereafter, the light irradiated from the power erasing device 30 is guided to the surface of the photosensitive drum 13 through the light guiding column 12 to erase the residual electric charges on the photosensitive drum 13.

The processing box 10 provided by the embodiment of the invention is detachably provided with or integrally provided with the forced pushing mechanism 11, when the processing box 10 is installed in the device main body, the forced pushing mechanism 11 pushes the shielding cover 41 to move from the first position to the second position, so that the power-eliminating device 30 is exposed, and before the processing box 10 is installed, the shielding cover 41 can shield the power-eliminating device 30 at the first position, so that the power-eliminating device 30 is prevented from being polluted by dust or other impurities, the power-eliminating performance of the power-eliminating device 30 can be improved, and the definition of a printed image can be ensured.

In one possible embodiment, as shown in fig. 2 and 3, the urging mechanism 11 is an urging projection extending along the length direction of the process cartridge 10, the urging projection having an urging surface 111.

As shown in fig. 9 and 10, the shielding cover 41 includes a moving body 411, and the moving body 411 has an engagement surface 4112 engaged with the urging surface 111, and the urging surface 111 presses the engagement surface 4112 to urge the moving body 411 to move during the process of loading the process cartridge 10 into the apparatus body.

The extending direction of the urging surface 111 is perpendicular to the width direction of the process cartridge 10, the extending direction of the urging surface 111 intersects the length direction of the process cartridge 10, and the extending direction of the urging surface 111 intersects the height direction of the process cartridge 10.

As shown in fig. 3, the urging surface 111 has a first end 1111 and a second end 1112, and the first end 1111 is located below the second end 1112 in the height direction of the process cartridge 10.

The extending direction of the mating surface 4112 is perpendicular to the width direction of the process cartridge 10, the extending direction of the mating surface 4112 intersects the length direction of the process cartridge 10, and the extending direction of the mating surface 4112 intersects the height direction of the process cartridge 10.

Further, as shown in fig. 9 and 10, the moving body 411 has a avoiding groove 4111 that mates with the push protrusion, and the mating surface 4112 is disposed in the avoiding groove 4111; as shown in fig. 6, the housing 20 includes a mounting plate 21, and the shielding cover 41 is slidably provided to the mounting plate 21, and the urging mechanism 11 presses the shielding cover 41 through the escape groove 4111 to slide the shielding cover 41 with respect to the mounting plate 21 during loading of the process cartridge 10 into the apparatus main body.

Wherein, as shown in fig. 6, the mounting plate 21 is provided with a slide rail 211, the slide rail 211 extends along the height direction of the process cartridge 10, and the shielding cover 41 is slidable in the slide rail 211.

The moving body 411 may have a rectangular parallelepiped shape. The escape groove 4111 penetrates the moving body 411 in the longitudinal direction of the process cartridge 10.

As shown in fig. 4 and 5, in the process of loading the process cartridge 10 into the apparatus main body, the urging mechanism 11 protrudes into the avoidance groove 4111, and presses the shielding cover 41 through the avoidance groove 4111, so that the shielding cover 41 slides along the slide rail 211, thereby moving the shielding cover 41 from the first position to the second position, and further exposing the power cancellation apparatus 30. Specifically, as shown in fig. 1, 4 and 5, in the process of loading the process cartridge 10 into the apparatus main body, the process cartridge 10 is pushed in along the longitudinal direction of the process cartridge 10, the push protrusion is pushed into the escape groove 4111, then the process cartridge 10 continues to be pushed into the apparatus main body, the push surface 111 is bonded to the mating surface 4112, then the process cartridge 10 continues to be pushed into the apparatus main body, the push surface 111 presses the mating surface 4112, the push protrusion applies a force to the shielding cover 41, the shielding cover 41 can slide downward in the height direction of the process cartridge 10, and then the process cartridge 10 continues to be pushed into the apparatus main body, and movement of the shielding cover 41 from the first position to the second position can be achieved.

In one possible embodiment, the pushing surface 111 is a first plane disposed obliquely; or, the pushing surface 111 is a first cambered surface.

Wherein the mating surface 4112 is a second plane that is obliquely arranged; alternatively, the mating surface 4112 is a second cambered surface.

The extension direction of the first plane may be parallel to the extension direction of the second plane. The extending direction of the first cambered surface may be parallel to the extending direction of the second cambered surface.

In an alternative embodiment, the urging surface 111 is a first plane and the mating surface 4112 is a second plane. In the process of loading the process cartridge 10 into the apparatus main body, the process cartridge 10 is pushed in along the longitudinal direction of the process cartridge 10, the push-forcing protrusion extends into the avoidance groove 4111, then the process cartridge 10 is continuously pushed into the apparatus main body, the first plane is attached to the second plane, then the process cartridge 10 is continuously pushed into the apparatus main body, the first plane presses the second plane, the push-forcing protrusion applies a force to the shielding cover 41, the shielding cover 41 can slide downward in the height direction of the process cartridge 10, then the process cartridge 10 is continuously pushed into the apparatus main body, and the shielding cover 41 can be moved from the first position to the second position.

In another alternative embodiment, the pushing surface 111 is a first arc surface, and the mating surface 4112 is a second arc surface. In the process that the process cartridge 10 is loaded into the apparatus main body, the process cartridge 10 is pushed in along the length direction of the process cartridge 10, the push-forcing protrusion extends into the avoidance groove 4111, then the process cartridge 10 is continuously pushed into the apparatus main body, the first cambered surface is attached to the second cambered surface, then the process cartridge 10 is continuously pushed into the apparatus main body, the first cambered surface presses the second cambered surface, the push-forcing protrusion applies an acting force to the shielding cover 41, the shielding cover 41 can slide downwards in the height direction of the process cartridge 10, then the process cartridge 10 is continuously pushed into the apparatus main body, and the shielding cover 41 can be moved from the first position to the second position.

In one possible embodiment, as shown in fig. 1 and 2, a cleaning member 42 is disposed on a side of the shielding cover 41 near the power-eliminating device 30, and the cleaning member 42 wipes the power-eliminating device 30 during the process of moving the shielding cover 41 between the first position and the second position, so that the power-eliminating device 30 can be kept clean, and residual charges of the photosensitive drum 13 can be cleaned.

Wherein, when the process cartridge 10 is loaded into the apparatus main body, the urging mechanism 11 urges the shielding cover 41 to move from the first position to the second position, the shielding cover 41 can drive the cleaning member 42, and the cleaning member 42 can wipe the electric apparatus 30.

During the process of detaching the process cartridge 10 from the apparatus main body, the shielding cover 41 is moved from the second position to the first position, and the shielding cover 41 can drive the cleaning member 42, so that the cleaning member 42 can wipe the sterilizing device 30.

In one possible embodiment, as shown in fig. 2 and 3, the process cartridge 10 further includes a light guide column 12 and a photosensitive drum 13, each of the light guide column 12 and the photosensitive drum 13 extending along the length direction of the process cartridge 10, the photosensitive drum 13 having a driving end 131, the driving end 131 and the urging mechanism 11 being located on the same side of the process cartridge 10 in the length direction of the process cartridge 10, the urging mechanism 11 being closer to the light guide column 12 than the photosensitive drum 13.

As shown in fig. 5 and 6, the frame 20 includes a mounting plate 21, the mounting plate 21 has a through hole 212, and the light guide 12 and the power cancellation device 30 are located on both sides of the through hole 212 along the longitudinal direction of the process cartridge.

The shape of the through hole 212 may be square. In other implementations, the shape of the through-hole 212 may also be other shapes, such as circular.

The driving end 131 is one end of the photosensitive drum 13 that can receive the driving force of the apparatus main body.

As shown in fig. 9 and 10, the shielding cover 41 further includes a connection plate 412, the connection plate 412 is fixedly connected with the moving body 411, the connection plate 412 is connected with the cleaning member 42, and the cleaning member 42 can wipe the power-eliminating device 30.

The connection plate 412 is located on the side of the mounting plate 21 facing the power cancellation device 30, and the connection plate 412 may block the through hole 212. Specifically, when the shielding cover 41 is located at the first position, the connection plate 412 shields the through hole 212, that is, the connection plate 412 covers the through hole 212, it is understood that, in the longitudinal direction of the process cartridge 10, the projection of the through hole 212 is located in the projection area of the connection plate 412, and at this time, dust or other impurities in the space where the process cartridge 10 is located in the apparatus main body can be prevented from polluting the electric apparatus 30 from the through hole 212, that is, dust or other impurities in the space where the process cartridge 10 is located in the apparatus main body can be shielded.

The shape of the connection plate 412 may be square or circular, and no specific arrangement is made here.

In one possible embodiment, the cleaning elements 42 may be felt or sponge, and are not specifically provided herein. In some examples, as shown in fig. 7 and 8, the cleaning member 42 is a felt, the felt is square in shape, the web 412 is square in shape, and the felt is adhered to the web 412.

In one possible embodiment, as shown in fig. 2 to 5, a reset member 50 is provided on the frame 20, and the reset member 50 is configured to drive the shielding cover 41 to move from the second position to the first position when the process cartridge 10 is detached from the apparatus main body, so that the shielding cover 41 shields the power cancellation apparatus 30.

The restoring member 50 is compressible when an external force is applied, and can restore to an original state when the external force is removed. The reset element 50 of fig. 2 and 3 is in an initial state and the reset element 50 of fig. 4 and 5 is in a compressed state.

As shown in fig. 2 and 3, after the process cartridge 10 is detached from the apparatus main body, the urging mechanism 11 is separated from the shielding cover 41, and the shielding cover 41 is moved from the second position to the first position by the driving of the reset member 50, and at this time, the shielding cover 41 can shield the power cancellation apparatus 30.

In one possible embodiment, as shown in fig. 5, 9 and 10, the restoring member 50 is a restoring spring, the moving body 411 has two sliding grooves 4113 and one connecting protrusion 4114, the two sliding grooves 4113 are respectively located at both sides of the moving body 411 in the width direction of the process cartridge 10, the connecting protrusion 4114 is located at one side of the moving body 411 in the height direction of the process cartridge 10, the restoring spring is located in the slide rail 211, one end of the restoring spring is connected with the connecting protrusion 4114, and the other end of the restoring spring is connected with the mounting plate 21.

Wherein the mounting plate 21 is slidably coupled to the two sliding grooves 4113 of the moving body 411. Specifically, the portions of the mounting plate 21 on both sides of the slideway 211 in the width direction of the process cartridge 10 are slidably connected to the two slide grooves 4113, respectively.

The slide groove 4113 penetrates the moving body 411 in the height direction of the process cartridge 10.

The shape of the connection protrusion 4114 may be square, or may be other shapes. The connecting projection 4114 is engaged with the return spring.

As shown in fig. 6, the mounting plate 21 has a fixing projection 213, and a return spring is connected to the fixing projection 213. The fixing protrusion 213 may have a square shape.

As shown in fig. 4 and 5, in the process of loading the process cartridge 10 into the apparatus main body, the process cartridge 10 is pushed in along the length direction of the process cartridge 10, the push protrusion is extended into the escape groove 4111, then, the process cartridge 10 continues to be pushed into the apparatus main body, the push surface 111 is abutted with the mating surface 4112, then, the process cartridge 10 continues to be pushed into the apparatus main body, the push surface 111 presses the mating surface 4112, the push protrusion applies a force to the shielding cover 41, the shielding cover 41 can slide downward in the height direction of the process cartridge 10, the shielding cover 41 compresses the return spring, and then, the process cartridge 10 continues to be pushed into the apparatus main body, and the movement of the shielding cover 41 from the first position to the second position can be achieved.

As shown in fig. 2 and 3, in the process of detaching the process cartridge 10 from the apparatus main body, the process cartridge 10 is pulled out along the length direction of the process cartridge 10, the push protrusion is forced to be separated from the shielding cover 41, then the shielding cover 41 slides upward by the compression force of the return spring, and then the return spring returns to the original state, realizing the movement of the shielding cover 41 from the second position to the first position. When the shutter cover 41 is in the first position, the return spring is in an initial state.

An embodiment of the present invention provides an image forming apparatus including an apparatus main body and a process cartridge; the process cartridge is detachably mounted in the apparatus main body.

The process cartridge in this embodiment has the same structure as the process cartridge provided in any one of the above embodiments, and can bring about the same or similar technical effects, which are not described in detail herein, and specific reference may be made to the description of the above embodiments.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (12)

1. A process cartridge detachably mounted in a device main body of an image forming device, the device main body including a frame, a power cancellation device mounted on the frame, and a shielding cover provided on the frame, the shielding cover being movable between a first position shielding the power cancellation device and a second position exposing the power cancellation device;

the processing box is detachably mounted or integrally provided with a forced pushing mechanism, and the forced pushing mechanism is configured to push the shielding cover to move from the first position to the second position when the processing box is installed in the device main body so as to expose the power-eliminating device.

2. A process cartridge according to claim 1, wherein said urging mechanism is an urging projection extending in a longitudinal direction of said process cartridge, said urging projection having an urging surface that urges said shielding cover to move.

3. The process cartridge according to claim 2, wherein the urging surface is a first plane provided obliquely; or the forced pushing surface is a first cambered surface.

4. A process cartridge according to claim 2 or 3, wherein said shielding cover includes a moving body having an engaging surface with which said urging surface is engaged, said urging surface pressing said engaging surface to urge said moving body to move during loading of said process cartridge into said apparatus body.

5. The process cartridge according to claim 4, wherein the mating surface is a second plane provided obliquely; or the forced pushing surface is a first cambered surface.

6. The process cartridge according to claim 4, wherein the moving body has a escape groove that cooperates with the urging mechanism, the mating surface being provided in the escape groove; the frame body comprises a mounting plate, the shielding cover is slidably arranged on the mounting plate, and in the process of loading the processing box into the device main body, the forced pushing mechanism extrudes the shielding cover through the avoidance groove so that the shielding cover slides relative to the mounting plate.

7. A process cartridge according to claim 6, wherein said mounting plate is provided with a slide rail extending in a height direction of said process cartridge, said shielding cover being slidable in said slide rail.

8. A process cartridge according to any one of claims 1 to 3, wherein said shielding cover is provided with a cleaning member on a side thereof adjacent to said power-eliminating means, said cleaning member wiping said power-eliminating means during movement of said shielding cover between said first position and said second position.

9. A process cartridge according to claim 1, wherein a reset member is provided on said frame body, said reset member being configured to drive said shielding cover to move from the second position to said first position when said process cartridge is detached from said apparatus main body, so that said shielding cover shields said power cancellation device.

10. A process cartridge according to claim 1, further comprising a light guide column and a photosensitive drum each extending along a longitudinal direction of said process cartridge, said photosensitive drum having a driving end, said driving end and said urging mechanism being located on the same side of said process cartridge in the longitudinal direction of said process cartridge, said urging mechanism being closer to said light guide column than said photosensitive drum.

11. The process cartridge according to claim 10, wherein the frame body includes a mounting plate having a through hole, and the light guide column and the power cancellation device are located on both sides of the through hole along a longitudinal direction of the process cartridge, respectively.

12. An image forming apparatus, characterized by comprising an apparatus main body and the process cartridge according to any one of claims 1 to 11;

the process cartridge is detachably mounted in the apparatus main body.