CN215297953U

CN215297953U - Processing box

Info

Publication number: CN215297953U
Application number: CN202121313418.XU
Authority: CN
Inventors: 范文燚
Original assignee: Zhuhai Dinglong Huitong Printing Technology Co ltd
Current assignee: Zhuhai Dinglong Huitong Printing Technology Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-12-24
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a processing box, which comprises a developing unit and a photosensitive unit, wherein the developing unit and the photosensitive unit are connected together through a first end cover and a second end cover; the developing unit comprises a developing shell and a developing roller which is rotatably supported on the developing shell, a storage bin and a developing bin are arranged in the developing shell, and a separation film is arranged between the storage bin and the developing bin; a diaphragm groove is arranged on the side wall of the developing shell connected with the first end cover, and the separation diaphragm penetrates through the diaphragm groove and extends out of the side of the first end cover to the outside of the processing box. The utility model discloses in, the diaphragm stretches out to the outside of handling the box from the side of first end cover, is convenient for simplify the structure and the equipment operation of handling the box.

Description

Processing box

Technical Field

The utility model relates to a processing box for electronic photography imaging device.

Background

Electrophotographic image forming apparatuses such as laser printers and copiers generally have a process cartridge detachably mounted thereon. The process cartridge may be composed of a developing unit and a photosensitive unit; the photosensitive unit comprises a photosensitive drum which is rotatably supported on a photosensitive shell, the developing unit comprises a developing roller which is rotatably supported on the developing shell, and a storage bin and a developing bin are arranged in the developing shell. When the process cartridge is operated, the developer is first conveyed from the storage bin to the developing bin, then adhered to the surface of the developing roller, and supplied to the photosensitive drum developing roller by the developing roller for supplying the developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum.

Generally, before the process cartridge is installed and used, the storage chamber is hermetically separated from the developing chamber by a separation film. The separating film is provided with a tearing end extending out of the processing box, when the processing box is installed and used, the separating film is torn away by a user, so that the storage bin is communicated with the developing bin, and the developer can flow into the developing bin from the storage bin and participate in developing.

In a process cartridge of the related art, a developing unit and a photosensitive unit are connected together by two end caps at opposite ends thereof, one of the end caps is provided with an exit hole through which a separation film passes, and when the process cartridge is assembled by the developing unit and the photosensitive unit, a tear end of the separation film needs to be aligned with and passed through the exit hole so that the tear end is exposed outside the process cartridge. However, since the separation film is flexible, the alignment between the tearing end of the separation film and the through hole is time-consuming and labor-consuming, which results in low efficiency of the separation film perforation and the process cartridge assembly, and is not convenient for realizing automatic production.

Disclosure of Invention

The utility model mainly aims at providing a simple and be convenient for realize automated production's processing box of production technology.

In order to achieve the above main object, the present invention provides a process cartridge, comprising a developing unit and a photosensitive unit, wherein the developing unit and the photosensitive unit are connected together by a first end cap and a second end cap; the developing unit comprises a developing shell and a developing roller which is rotatably supported on the developing shell, a storage bin and a developing bin are arranged in the developing shell, and a separation film is arranged between the storage bin and the developing bin; the side wall of the developing shell connected with the first end cover is provided with a diaphragm groove, and the separation diaphragm penetrates through the diaphragm groove and extends out of the side of the first end cover to the outside of the processing box.

Among the above-mentioned technical scheme, the separating film stretches out to the outside of handling the box from the side of first end cover, need not to set up separating film and wears the hole on first end cover as prior art, also need not to pass the separating film from first end cover when equipment development unit and sensitization unit, has both simplified the production technology of handling the box, is convenient for realize efficient automated production yet.

According to the utility model discloses a concrete implementation mode is equipped with the partition wall between storage storehouse and the development storehouse, is formed with the opening that communicates storage storehouse and development storehouse on the partition wall, and the parting film sets up on the partition wall to sealed this opening.

According to a specific embodiment of the present invention, the developing casing is provided with a sealing cover which is exposed to the developer injection port outside the process cartridge and which seals the developer injection port. The developer injection port is exposed outside the processing box, and the developer can be injected after the processing box is assembled, so that the assembly efficiency is prevented from being influenced by the excessive weight of the developer in the storage bin in the assembly process.

Further, the developer injection port is disposed on a side wall of the developing housing connected to the first end cap and located beside the first end cap without being shielded by the first end cap.

Further, the developer injection port and the tear end of the separation film are exposed at the same side of the first end cap.

According to the utility model discloses a concrete implementation mode, observe from first end cover one side, the diaphragm tank sets up in the position of neighbouring first end cover side to the operation is separated in tearing of parting film, also more is favorable to carrying out the equipment of first end cover. Specifically, when viewed from one side of the first end cap, the diaphragm groove may overlap with a side edge of the first end cap, may be located outside the first end cap and near the side edge of the first end cap, and may be located inside the first end cap and near the side edge of the first end cap.

According to a specific embodiment of the present invention, the diaphragm groove is provided with a sealing member, and the separation diaphragm is in contact with one side edge of the sealing member.

Furthermore, a pressing part for pressing the sealing element is arranged on the side wall of the first end cover or the developing shell connected with the first end cover. The pressing portion can suppress deformation of the sealing member when the separation film is torn, and further suppress leakage of the developer from the diaphragm groove.

Further, the pressing portion is provided to press at least one side of the sealing member contacting the separation membrane. When the separator is torn, the seal is deformed mainly on the side in contact with the separator, and therefore, at least this side is pressed by the pressing portion, and the deformation of this side can be suppressed well, thereby more reliably preventing the developer from leaking from the diaphragm groove when the separator is torn.

Further, the side wall of the developing shell connected with the first end cover is provided with a support used for supporting the developing roller, and the pressing part is formed on the support, so that the product structure and the assembly are simplified.

To more clearly illustrate the objects, technical solutions and advantages of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Drawings

FIG. 1 is a perspective view of an embodiment of a process cartridge according to the present invention;

FIG. 2 is an exploded view of the embodiment of the cartridge of FIG. 1;

fig. 3 is a transverse sectional view of a developing unit in the process cartridge shown in fig. 1;

FIG. 4 is a front view of one side of a first end cap of the embodiment of the process cartridge of FIG. 1;

FIG. 5 is a partial exploded view of the developer unit in the process cartridge of FIG. 1 showing the sealing structure of the diaphragm groove;

fig. 6 is a partial longitudinal sectional view of the developing unit in the process cartridge shown in fig. 1, in which a sealing structure of a diaphragm groove is shown.

Detailed Description

Referring to fig. 1 and 2, a process cartridge according to an embodiment of the present invention includes a developing unit 10 and a photosensitive unit 20, and the developing unit 10 and the photosensitive unit 20 are coupled together by a first end cap 31 and a second end cap 32 provided at opposite ends thereof. The photosensitive unit 20 includes a photosensitive housing 21 and a photosensitive drum 22 rotatably supported on the photosensitive housing 21, and the first end cap 31 is assembled with the photosensitive housing 21 and fixed to a first end of the photosensitive housing 21 by screws, for example; the second end cap 32 is integrally formed with the photosensitive housing 21, and may be considered as a part of the photosensitive housing 21.

The developing unit 10 includes a developing housing 11 disposed between a first end cap 31 and a second end cap 32, and the developing housing 11 and the first end cap 31 and the second end cap 32 may be movably coupled (e.g., rotatably coupled). As shown in fig. 3, a developing roller 12 is rotatably supported on the developing housing 11, and the developing roller 12 is configured to supply a developer to the photosensitive drum 22 to develop the electrostatic latent image on the photosensitive drum 22.

The developing housing 11 has a storage bin 131 and a developing bin 132 therein, and a partition film 40 is provided between the storage bin 131 and the developing bin 132. Specifically, the developing housing 11 includes a partition wall 113 provided between the storage bin 131 and the developing bin 132, an opening portion 114 communicating the storage bin 131 and the developing bin 132 is formed on the partition wall 113, and the partition film 40 is provided (e.g., thermally welded) on the partition wall 113 and seals the opening portion 114.

When the process cartridge is in operation (at this time, the partition film 40 is peeled off), the developer stored in the storage bin 131 is first conveyed into the developing bin 132 by the agitating frame or the powder feeding member (not shown) provided in the storage bin 131, and is then supplied onto the developing roller 12 by the powder feeding roller 13 provided in the developing bin 132.

With continued reference to fig. 1 and 2, a sidewall 111 of the developing housing 11 is connected to the first end cap 31, the sidewall 111 is provided with a diaphragm groove 115 (see fig. 5-6) penetrating the sidewall 111, and the separation film 40 has a tear-off end 41 penetrating from the diaphragm groove 115 to the outside of the developing housing 11. Further, the tear-off end 41 protrudes from the side of the first end cap 31 to the outside of the process cartridge (see fig. 1) after penetrating out of the diaphragm groove 115, so that the separation film 40 can be easily torn off when the process cartridge is mounted for use. Since the separation film 40 does not pass through the first end cap 31, the process for producing the process cartridge can be simplified, and highly efficient automated production can be facilitated.

As shown in fig. 4, in an embodiment of the present invention, the diaphragm groove 115 is disposed adjacent to the side 311 of the first end cap 31 when viewed from the side of the first end cap 31, which not only facilitates the tearing-off operation of the separation diaphragm 40, but also facilitates the assembly of the first end cap 31. Where diaphragm groove 115 may be adjacent side 311 as shown in FIG. 4 but completely obscured by first end cap 31. In other embodiments, diaphragm recess 115 may be exposed on the exterior of first end cap 31 adjacent side 311, or may be positioned to overlap side 311 (i.e., partially obscured by first end cap 31). Further, diaphragm groove 115 is preferably disposed substantially parallel to side 311 of first end cap 31.

Fig. 5 and 6 show the sealing structure of the diaphragm groove 115, wherein fig. 6 is a partial longitudinal sectional view of the developing unit 10, the sectional plane of which passes through the rotational axis of the developing roller 12 and is perpendicular to the longitudinal direction of the diaphragm groove 115. As shown in fig. 5 and 6, a seal 15 is provided in the diaphragm groove 115, and the separation membrane 40 is in contact with one side edge of the seal 15. Specifically, when the separation film 40 is peeled off, one side edge of the sealing member 15 is brought into contact with a surface of the separation film 40 facing the developing chamber 131 to scrape off the developer attached to the separation film 40 by the sealing member 15.

Generally, the sealing member of the diaphragm groove is made of an elastic material, and when the separation membrane is torn off, the sealing member is elastically deformed, which easily causes a gap to be formed between the diaphragm groove and the sealing member; and the storage bin is in a sealed state before the separation film is torn away, and the internal pressure is greater than the air pressure. Therefore, if the elastic deformation of the seal is not suppressed, the developer is likely to leak from the gap when the separator is peeled off, and the problem of "powder spraying" is caused.

In order to solve this problem, the embodiment of the present invention provides a pressing portion for pressing the sealing member 15 on the side wall 111 of the developing casing 11, and the pressing portion is preferably provided to press at least one side of the sealing member 15 contacting the separation film 40. In a specific embodiment, as shown in fig. 5 and 6, a bracket 14 for supporting the developing roller 12 is mounted on the side wall 111 of the developing casing 11, a pressing portion 141 for pressing the sealing member 15 is provided on the bracket 14, and the pressing portion 141 may be provided to press only one side of the outer end of the sealing member 15 contacting the separation film 40 or may be provided to press the entire outer end surface of the sealing member 15. The pressing portion 141 is preferably formed integrally with the holder 14 and constitutes a part of the holder 14. In other embodiments, the pressing portion for pressing the sealing member 15 may be made as a separate part and fixedly assembled to the side wall 111; alternatively, a pressing portion for pressing the sealing member 15 may be further provided on the first end cap 31.

Further, the developing casing 11 may be provided with a developer injection port exposed to the outside of the process cartridge and a sealing cover sealing the developer injection port. In one embodiment, as shown in fig. 1 and 2, the developer inlet port 16 (which has been sealed by the sealing cap) is provided on the sidewall 111 of the developing casing 11 connected to the first end cap 31, and is located at the side of the first end cap 31 without being shielded by the first end cap 31.

Preferably, as shown in fig. 4, the developer injection port 16 and the tear end 41 of the separation film 40 are exposed at the same side of the first end cap 31. Further, the developer injection port 16 is further away from the first end cap 31 than the tear end 41 to facilitate the injection operation of the developer.

Although the present invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto. Any person skilled in the art can make some changes or substitutions without departing from the scope of the invention, i.e. all equivalent changes made according to the invention should be covered by the protection scope of the invention.

Claims

1. A process cartridge includes a developing unit and a photosensitive unit, the developing unit and the photosensitive unit being connected together by a first end cap and a second end cap; the developing unit comprises a developing shell and a developing roller which is rotatably supported on the developing shell, a storage bin and a developing bin are arranged in the developing shell, and a separation film is arranged between the storage bin and the developing bin; the method is characterized in that: and a diaphragm groove is arranged on the side wall of the developing shell connected with the first end cover, and the separation diaphragm penetrates through the diaphragm groove and extends out of the side of the first end cover to the outside of the processing box.

2. A process cartridge according to claim 1, wherein: a partition wall is arranged between the storage bin and the developing bin, an opening part for communicating the storage bin with the developing bin is formed in the partition wall, and the partition film is arranged on the partition wall and seals the opening part.

3. A process cartridge according to claim 1, wherein: the developing casing is provided with a developer injection port exposed outside the process cartridge and a sealing cover sealing the developer injection port.

4. A process cartridge according to claim 3, wherein: the developer injection port is arranged on the side wall of the developing shell connected with the first end cover and is positioned beside the first end cover without being shielded by the first end cover.

5. A process cartridge according to claim 4, wherein: the developer injection port and the tear end of the separation film are exposed at the same side of the first end cap.

6. A process cartridge according to claim 1, wherein: the diaphragm groove is disposed adjacent to the first end cap side as viewed from the first end cap side.

7. A process cartridge according to claim 1, wherein: and a sealing element is arranged in the diaphragm groove, and the separation film is in contact with one side edge of the sealing element.

8. A process cartridge according to claim 7, wherein: and the first end cover or the side wall of the developing shell connected with the first end cover is provided with a pressing part for pressing the sealing piece.

9. A process cartridge according to claim 8, wherein: the pressing portion is configured to press at least one side of the sealing member contacting the separation membrane.

10. A process cartridge according to claim 8, wherein: the developing shell and the side wall connected with the first end cover are provided with a support used for supporting the developing roller, and the pressing part is formed on the support.