CN220569069U

CN220569069U - Drum assembly, process cartridge, and image forming apparatus

Info

Publication number: CN220569069U
Application number: CN202322291959.2U
Authority: CN
Inventors: 侯树家
Original assignee: Zhuhai Pantum Electronics Co Ltd
Current assignee: Zhuhai Pantum Electronics Co Ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-03-08
Anticipated expiration: 2033-08-24

Abstract

The embodiment of the utility model provides a drum assembly, a processing box and an image forming device, and relates to the technical field of imaging. The drum assembly comprises a shell, a photosensitive drum, a light guide column and a correcting piece; the photosensitive drum and the light guide column are mounted on the housing, the light guide column has a light inlet end, the correction member is connected with the light guide column, and the correction member is configured to correct the position of the extinction lamp relative to the side plate when the drum assembly is mounted on the device body, so that the light inlet end of the light guide column is in positive opposition to the extinction lamp. When the drum assembly is mounted on the device main body, the position of the extinction lamp relative to the side plate is corrected through the correction piece, and the axis of the extinction lamp is collinear with the axis of the light guide column, so that the light inlet end of the light guide column is right in extinction lamp, the illumination intensity of the light inlet end can be increased, and residual charges of the photosensitive drum can be subjected to extinction.

Description

Drum assembly, process cartridge, and image forming apparatus

Technical Field

The present utility model relates to the field of image forming technologies, and in particular, to a drum assembly, 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 side plate and a extinction lamp, wherein the extinction lamp is fixed on the side plate through a mounting seat. The drum assembly comprises a light guide column, one end of the light guide column is a light inlet end, and when the processing box is arranged on the device main body, the light inlet end is adjacent to the extinction lamp, so that the function of exposing and extinction of the photosensitive drum after light rays of the extinction lamp are transmitted to the light guide column is realized.

However, when the process cartridge is mounted on the apparatus main body, the light-entering end of the light guide column cannot face the extinction lamp, and the illumination intensity entering the light-entering end is weak, so that residual charges of the photosensitive drum cannot be subjected to extinction.

Disclosure of Invention

The embodiment of the utility model provides a drum assembly, a processing box and an image forming device, which are used for solving the problem that when the processing box is arranged on a device main body, the light inlet end of a light guide column cannot be over against a extinction lamp, the illumination intensity entering the light inlet end is weak, and residual charges of a photosensitive drum cannot be subjected to extinction.

In a first aspect, an embodiment of the present utility model provides a drum assembly detachably mountable to an apparatus main body of an image forming apparatus, the apparatus main body including a side plate and a power cancellation lamp fixed to a mount movable on the side plate, the drum assembly including a housing, a photosensitive drum, a light guide column, and a correction member;

the photosensitive drum and the light guide column are mounted on the housing, the light guide column has a light inlet end, the correction member is connected with the light guide column, and the correction member is configured to correct the position of the extinction lamp relative to the side plate when the drum assembly is mounted on the device body, so that the light inlet end of the light guide column is opposite to the extinction lamp.

In one possible embodiment, the device further comprises a cleaning member connected to the correction member, the cleaning member being configured to wipe the extinction lamp when the drum assembly is mounted to the device body.

In one possible embodiment, the correction element has a through-hole, in which the light guide post is plugged;

the inner wall of the correcting piece is provided with a guide part, and the guide part can guide the extinction lamp so that the extinction lamp is inserted into the through hole.

In one possible embodiment, the guide is a circular arc or an oblique angle.

In one possible embodiment, the correction member further has a fixing hole communicating with the through hole, and the cleaning member is fixed in the fixing hole.

In one possible embodiment, the cleaning member is a cleaning brush including a fixing ring fixed in the fixing hole and brush filaments fixed on an inner wall of the fixing ring.

In one possible embodiment, the fixing hole and the through hole each extend along an extension direction of the light guide column.

In a second aspect, an embodiment of the present utility model provides a process cartridge including a developing cartridge and a drum assembly as described above;

the drum assembly is detachably mounted on the developing cartridge.

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

the processing box is detachably arranged in the device main body, the device main body comprises a side plate and a power consumption lamp fixed on a mounting seat, and the mounting seat is movable on the side plate.

In one possible embodiment, the mount is movable in a height direction and a width direction of the process cartridge.

The embodiment of the utility model provides a drum assembly, a processing box and an image forming device, wherein the drum assembly is detachably arranged on a device main body of the image forming device, the device main body comprises a side plate and a extinction lamp fixed on a mounting seat, the mounting seat is movable on the side plate, and the drum assembly comprises a shell, a photosensitive drum, a light guide column and a correction piece; the photosensitive drum and the light guide column are mounted on the housing, the light guide column has a light inlet end, the correction member is connected with the light guide column, and the correction member is configured to correct the position of the extinction lamp relative to the side plate when the drum assembly is mounted on the device body, so that the light inlet end of the light guide column is in positive opposition to the extinction lamp. When the drum assembly is mounted on the device main body, the position of the extinction lamp relative to the side plate is corrected through the correction piece, and the axis of the extinction lamp is collinear with the axis of the light guide column, so that the light inlet end of the light guide column is right in extinction lamp, the illumination intensity of the light inlet end can be increased, and residual charges of the photosensitive drum can be subjected to extinction.

Drawings

In order to more clearly illustrate the embodiments of the present utility model 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 utility model, 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 view of the structure of a process cartridge and an apparatus main body of an image forming apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a portion of the device body of FIG. 1;

FIG. 3 is a schematic diagram of a portion of the device body of FIG. 1;

FIG. 4 is a schematic view of a portion of the structure of the drum assembly of FIG. 1 when not mounted to the main body of the apparatus;

FIG. 5 is a schematic partial cross-sectional view of the drum assembly of FIG. 4 as it is not mounted to the apparatus body;

FIG. 6 is a schematic view of a portion of the drum assembly of FIG. 1 as mounted to a device body;

FIG. 7 is a schematic partial cross-sectional view of the drum assembly of FIG. 6 mounted to a device body;

fig. 8 is a schematic structural view of a cleaning member according to an embodiment of the present utility model.

Reference numerals illustrate:

1-a drum assembly; 10-a housing;

20-a photosensitive drum; 30-a light guide column;

301-an optical inlet end; 40-correcting piece;

401-a through hole; 402-a guide;

403-fixing holes; 50-cleaning members;

51-a fixing ring; 52-brushing wires;

2-side plates; 21-a mounting groove;

22-opening; 3-an extinction lamp;

4-mounting seats; 5-developing cartridge.

Detailed Description

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

It should be noted that the terms "first," "second," and "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 utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

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

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

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

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 side plate and a extinction lamp, wherein the extinction lamp is fixed on the side plate through a mounting seat. The drum assembly comprises a light guide column, one end of the light guide column is a light inlet end, and when the processing box is arranged on the device main body, the light inlet end is adjacent to the extinction lamp, so that the function of exposing and extinction of the photosensitive drum after light rays of the extinction lamp are transmitted to the light guide column is realized. However, when the process cartridge is mounted on the apparatus main body, the axis of the light guide column and the axis of the erasing lamp are not collinear, the light-entering end of the light guide column cannot face the erasing lamp, the light intensity entering the light-entering end is weak, and residual charges of the photosensitive drum cannot be erased.

In order to solve the above problems, an embodiment of the present utility model provides a drum assembly, a process cartridge, and an image forming apparatus, in which a mount for a extinction lamp is movable on a side plate, the drum assembly is provided with a correction member, and when the drum assembly is mounted on a main body of the apparatus, the position of the extinction lamp relative to the side plate is corrected by the correction member, and an axis of the extinction lamp is collinear with an axis of a light guide column, so that a light inlet end of the light guide column is in front of the extinction lamp, thereby increasing illumination intensity of the light inlet end, and further eliminating residual charges of a photosensitive drum.

The drum assembly, the process cartridge, and the image forming apparatus provided by the embodiments of the present utility model are described in detail below with reference to specific embodiments.

As shown in fig. 1 to 7, an embodiment of the present utility model provides a drum assembly 1 detachably mounted on an apparatus main body of an image forming apparatus, the apparatus main body including a side plate 2 and a cancel lamp 3 fixed on a mount 4, the mount 4 being movable on the side plate 2.

The drum assembly 1 includes a casing 10, a photosensitive drum 20, a light guide column 30, and a correction member 40; the photosensitive drum 20 and the light guide pole 30 are mounted on the housing 10, the light guide pole 30 has a light-entering end 301, and the correction member 40 is connected to the light guide pole 30, the correction member 40 being configured to correct the position of the extinction lamp 3 with respect to the side plate 2 when the drum assembly 1 is mounted on the apparatus main body so that the light-entering end 301 of the light guide pole 30 faces the extinction lamp 3.

As shown in fig. 1, the extending direction of the X axis is the longitudinal direction of the process cartridge, the extending direction of the Y axis is the width direction of the process cartridge, and the extending direction of the Z axis is the height direction of the process cartridge. The drum assembly 1 is mounted to the apparatus main body along the length direction of the process cartridge.

The light guide pillar 30 has a cylindrical shape. The extending direction of the photosensitive drum 20 is parallel to the extending direction of the light guide column 30, and both the photosensitive drum 20 and the light guide column 30 extend along the longitudinal direction of the process cartridge. The extending direction of the light guide post 30 is perpendicular to the side plate 2, and the axis of the light guide post 30 extends along the extending direction of the light guide post 30.

The extinction lamp 3 may be cylindrical in shape. When the axis of the light guiding rod 30 is collinear with the axis of the extinction lamp 3, the light entrance end 301 of the light guiding rod 30 is opposite to the extinction lamp 3.

The mount 4 is movable in the height direction and the width direction of the process cartridge. Specifically, as shown in fig. 2, a mounting groove 21 is provided in the side plate 2, and a mount 4 is provided in the mounting groove 21, in which the mount 4 is movable in the height direction and the width direction of the process cartridge.

As shown in fig. 3, the side plate 2 is provided with an opening 22 through which the extinction lamp 3 passes, and the opening 22 communicates with the mounting groove 21 in the extending direction of the light guide 30.

As shown in fig. 3, the height of the mounting seat 4 in the height direction of the process cartridge is H1, the height of the mounting groove 21 in the height direction of the process cartridge is H2, and H1 < H2; as shown in fig. 2, the mount 4 has a width L1 in the width direction of the process cartridge, and the mount groove 21 has a width L2 in the width direction of the process cartridge, L1 < L2. The height of the mounting seat 4 in the height direction of the process cartridge and the height of the mounting groove 21 in the height direction of the process cartridge can be set according to actual needs; the width of the mount 4 in the width direction of the process cartridge and the width of the mount groove 21 in the width direction of the process cartridge may be set as needed.

After the image forming apparatus completes one image full process, the charge remaining on the photosensitive drum 20 needs to be discharged before the next image full process cycle is entered. As shown in fig. 4 to 7, when the drum assembly 1 is mounted on the apparatus main body, the correction member 40 corrects the position of the extinction lamp 3 relative to the side plate 2 so that the axis of the extinction lamp 3 is collinear with the axis of the light guide column 30, the light inlet end 301 of the light guide column 30 can be made to face the extinction lamp 3, after the extinction lamp 3 is electrified, the light of the extinction lamp 3 enters the light guide column 30 through the light inlet end 301 of the light guide column 30, the light in the light guide column 30 irradiates the surface of the photosensitive drum 20 to eliminate residual charges on the photosensitive drum 20, and thus the neutralization is completed.

According to the drum assembly 1 provided by the embodiment of the utility model, when the drum assembly 1 is installed on a device main body, the correction piece 40 is used for correcting the position of the extinction lamp 3 relative to the side plate 2, and the axis of the extinction lamp 3 is collinear with the axis of the light guide column 30, so that the light inlet end 301 of the light guide column 30 is opposite to the extinction lamp, the illumination intensity of the light inlet end 301 can be increased, and residual charges of the photosensitive drum 20 can be subjected to extinction.

In one possible embodiment, as shown in fig. 4 and 5, the drum assembly 1 further comprises a cleaning member 50, the cleaning member 50 being connected to the correction member 40. As shown in fig. 6 and 7, the cleaning member 50 is configured to wipe the electricity-eliminating lamp 3 when the drum assembly 1 is mounted to the apparatus main body. The erasing lamp 3 is wiped by the cleaning member 50, and carbon powder can be adhered to the erasing lamp 3, so that when the drum assembly 1 is mounted on the device main body, the normal erasing circuit can be ensured, and the printing quality of the image forming device can be ensured.

In one possible embodiment, as shown in fig. 4 and 5, the rectifying member 40 has a through hole 401, and the light guide post 30 is inserted in the through hole 401.

Wherein the shape of the through hole 401 may be circular. The through hole 401 extends along the extending direction of the light guide pillar 30.

The inner wall of the correction member 40 is provided with a guide part 402, and the guide part 402 can guide the extinction lamp 3 so as to enable the extinction lamp 3 to be inserted into the through hole 401. Specifically, as shown in fig. 6 and 7, in the process of mounting the drum assembly 1 on the apparatus main body, the cleaning member 50 wipes the extinction lamp 3 first, and then the guide portion 402 of the correction member 40 guides the extinction lamp 3 so that the extinction lamp 3 moves on the side plate 2 with the mounting base 4, when the extinction lamp 3 is inserted in the through hole 401, the axis of the extinction lamp 3 is collinear with the axis of the light guide post 30, and the light inlet end 301 of the light guide post 30 faces the extinction lamp 3.

The guide part 402 may be a circular arc, an oblique angle, or other structures capable of guiding the electric cancellation lamp 3.

In some examples, the diameter of the extinction lamp 3 is equal to the diameter of the light guide post 30, and the diameter of the through hole 401 is equal to the diameter of the light guide post 30.

In one possible embodiment, as shown in fig. 4 and 5, the correcting member 40 further has a fixing hole 403, the fixing hole 403 communicates with the through hole 401, and the cleaning member 50 is fixed in the fixing hole 403.

Wherein. The fixing hole 403 is circular in shape. The diameter of the fixing hole 403 is larger than that of the through hole 401. The fixing hole 403 and the through hole 401 each extend along the extending direction of the light guide post 30.

As shown in fig. 6 and 7, when the drum assembly 1 is mounted to the apparatus main body, the electricity eliminating lamp 3 passes through the cleaning member 50 in the fixing hole 403 first, the electricity eliminating lamp 3 is wiped by the cleaning member 50, and then the electricity eliminating lamp 3 is guided by the guide portion 402, and the position of the electricity eliminating lamp 3 with respect to the side plate 2 is corrected, so that the electricity eliminating lamp 3 is inserted into the through hole 401.

In one possible embodiment, as shown in fig. 8, the cleaning member 50 is a cleaning brush including a fixing ring 51 and brush filaments 52, the fixing ring 51 being fixed in the fixing hole 403, the brush filaments 52 being fixed on an inner wall of the fixing ring 51.

Wherein the fixing ring 51 can be fixedly connected with the correction element 40 by means of adhesion. In other ways, the fixing ring 51 may be fixedly connected to the correction element 40 in other ways.

The brush filaments 52 may be plastic filaments, such as nylon filaments.

As shown in fig. 1, an embodiment of the present utility model provides a process cartridge including a developing cartridge 5 and a drum assembly 1; the drum assembly 1 is detachably mounted on the developing cartridge 5.

The drum assembly 1 in this embodiment has the same structure as the drum assembly provided in any of the above embodiments, and can bring about the same or similar technical effects, which are not described in detail herein, and reference may be made to the description of the above embodiments.

An embodiment of the present utility model 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 utility model, and not for limiting the same; although the utility model 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 utility model.

Claims

1. A drum assembly detachably mounted on an apparatus main body of an image forming apparatus, the apparatus main body including a side plate and a extinction lamp fixed on a mount movable on the side plate, characterized in that the drum assembly includes a housing, a photosensitive drum, a light guide column, and a correction member;

2. The drum assembly of claim 1, further comprising a cleaning member coupled to the calibration member, the cleaning member configured to wipe the power cancellation lamp when the drum assembly is mounted to the device body.

3. Drum assembly according to claim 2, wherein the correction member has a through hole in which the light guiding column is inserted;

4. A drum assembly according to claim 3, wherein the guide is a circular arc or a bevel.

5. A drum assembly as claimed in claim 3, wherein the correction member further has a fixing hole communicating with the through hole, the cleaning member being fixed in the fixing hole.

6. The drum assembly of claim 5, wherein the cleaning member is a cleaning brush including a retaining ring and brush filaments, the retaining ring being secured in the retaining hole, the brush filaments being secured to an inner wall of the retaining ring.

7. The drum assembly of claim 5, wherein the fixing hole and the through hole each extend along an extending direction of the light guide column.

8. A process cartridge comprising a developing cartridge and the drum assembly according to any one of claims 1 to 7;

the drum assembly is detachably mounted on the developing cartridge.

9. An image forming apparatus, comprising an apparatus main body and the process cartridge according to claim 8;

10. The image forming apparatus according to claim 9, wherein the mount is movable in a height direction and a width direction of the process cartridge.