CN211015029U

CN211015029U - Processing box

Info

Publication number: CN211015029U
Application number: CN201922034944.1U
Authority: CN
Inventors: 刘龙伟; 姚宇豪; 徐军
Original assignee: Jiangxi Yibo Electronic Technology Co Ltd
Current assignee: Jiangxi Yibo Electronic Technology Co Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-14
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a processing box, detachable install in image forming device, include: a frame; a photosensitive drum, a driving gear located at the end of the photosensitive drum, disposed at the driving end of the process cartridge, and having gear teeth on the outer circumference thereof for engaging with a power output gear of an image forming apparatus to receive a driving force; a chip; still including the inside developer roll that is provided with the magnetic core, the developer roll is provided with the developer roll gear at its length direction's end, the developer roll gear with drive gear the gear tooth direct toothing is in order to receive drive power. Through above-mentioned scheme, can reduce the production manufacturing cost of current processing box.

Description

Processing box

Technical Field

The present invention relates to a process cartridge for use in an electrophotographic image forming apparatus

Background

In an image forming apparatus using an electrophotographic image forming method, a photosensitive drum as an image bearing member is uniformly charged. Then, the charged photosensitive drum is selectively exposed, so that an electrostatic latent image is formed on the surface of the photosensitive drum. Then, the electrostatic latent image on the photosensitive drum is visualized as a toner image by toner as a developer. Then, the toner image formed on the surface of the photosensitive drum is transferred onto a recording material such as paper, and further, the toner image transferred on the recording material is fixed on the recording material under application of heat and pressure, so that image recording is performed.

In such an image forming apparatus, maintenance of various processing devices is generally required. In order to facilitate maintenance of various process devices, a process cartridge has been practically used which integrally assembles the photosensitive drum, the charging device, the developing device, the cleaning device, and the like as described above and which is formed to be attachable to and detachable (detachable) from the image forming apparatus.

The existing three-star series monochrome processing box on the market is in contact type development, the processing box adopts a mode that a developing roller is in contact with a photosensitive drum for development, the processing box comprises the developing roller, a powder outlet knife, a powder feeding roller, nonmagnetic carbon powder, the photosensitive drum, a charging roller and the like, and along with the increasing maturity of the market and the progress of the production and manufacturing technology of the processing box, the production and manufacturing cost of the processing box is expected to be further reduced, and the use cost of a user is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a new processing box structure, the utility model discloses a realize through following technical scheme:

a process cartridge detachably mountable to an image forming apparatus, comprising:

a frame including a developing frame having a developer accommodating portion that accommodates a developer, and a photosensitive frame extending in a longitudinal direction and having a driving end and a conductive end that are spaced apart from each other in the longitudinal direction;

a photosensitive drum rotatably supported by the photosensitive frame;

a driving gear located at a distal end of the photosensitive drum, provided at a driving end of the process cartridge, and having gear teeth at an outer periphery thereof for engaging with a power output gear of an image forming apparatus to receive a driving force;

the chip is arranged at the conductive end of the processing box, which is opposite to the driving end;

still including the inside developer roll that is provided with the magnetic core, the developer roll is provided with the developer roll gear at its length direction's end, the developer roll gear with drive gear the gear tooth direct toothing is in order to receive drive power. Further, still including fixed mounting go out the powder sword on the development frame, go out the powder sword be used for with the surface contact of developer roll is in with the restriction formation the thickness of the developer of developer roll surface, it has knife rest and blade to go out the powder sword, the knife rest adopts the metal material to make, the blade adopts elastic plastic to make. Further, the conductive end is provided with a developing roller electrode and a charging roller electrode.

Further, be provided with the sensitization frame side cover on the sensitization frame, the chip with the roller electrode that charges is installed on the sensitization frame side cover.

Further, the conductive end is provided with a developing frame side cover, and the developing roller electrode is mounted on the developing frame.

Further, the developer is a magnetic developer.

Further, a seal tape for sealing the developer accommodating portion is attached to the developing frame.

After the technical scheme is adopted, the utility model discloses a processing box that the processing box that will adopt non-magnetic developer contact development mode on the market changes magnetic developer jump formula development into or the processing box of magnetic developer contact development mode, it has following beneficial effect, it has adopted the price lower, the plastic blade that accuse powder is good replaces current sheetmetal, the powder roller that send of high price has been cancelled, because send the powder roller to have a solid steel axle that runs through whole processing box length scope, can also reduce the gross weight of processing box.

Drawings

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

FIG. 2 is a schematic view of an exploded structure of the cartridge of the present invention;

FIG. 3 is a schematic view of the conductive terminal of the cartridge according to the present invention;

FIG. 4 is an exploded view of the conductive terminal of the cartridge of the present invention;

fig. 5 is an exploded view of the driving end of the cartridge of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 2, the process cartridge according to the present invention is detachably mounted in an image forming apparatus, and includes a frame 1, the frame 1 includes a developing frame and a photosensitive frame, a photosensitive drum 3 is rotatably supported by the photosensitive frame, and a developing roller 4 is rotatably supported by the developing frame. The developing frame includes a developer accommodating portion that can be filled with a developer. The photosensitive drum 3 and the developing roller 4 are provided at the front end of the frame 1, and the rear end of the frame 1 opposite to the front end where the photosensitive drum 3 is provided with a handle 2, the handle 2 being used for a user to grasp the process cartridge to mount or dismount in the image forming apparatus.

The axial tail end of the photosensitive drum 3 is provided with a driving gear 5, and the driving gear 5 is fixedly connected with the aluminum pipe part of the photosensitive drum 3 in an interference or gluing mode. The outer periphery of the drive gear 5 has gear teeth, which directly mesh with a power output gear (not shown in the drawings) in the image forming apparatus via the gear teeth to receive a rotational driving force. The developing roller gear 6 is provided at an axial end of the developing roller 4, and is in contact engagement with the gear teeth on the drive gear 5 to receive a rotational driving force from the drive gear 5. For convenience of description, an end at which the driving gear 5 is located is referred to as a driving end, an electrode part that can receive power in the image forming apparatus is provided on a side of the process cartridge opposite to the driving end in the longitudinal direction thereof, and an end opposite to the driving end is referred to as a conductive end. The driving end is provided with a driving side edge cover 9, and the conductive end is provided with a drum bearing member 10, a conductive side developing frame edge cover 11. The developing roller 4 comprises a magnetic core 4a and an aluminum sleeve 4b, the magnetic core 4a has magnetism, and a magnetic field generated by the magnetic core 4a can penetrate through the aluminum sleeve 4 b. The doctor blade includes a blade holder 21 and a blade 22, the blade holder 21 is made of metal and fixed to the frame 1, the blade 22 is fixed to the blade holder 21 by means of an elastic plastic material by means of gluing or the like, the blade 22 has a fixed end fixed to the blade holder 21 and a free end abutting against the outer surface of the sleeve 4b of the developing roller, and the blade 22 elastically abuts against the outer surface of the sleeve 4b to control the thickness of the developer layer formed on the surface of the developing roller 4. Preferably, in this embodiment, a sandblasted layer is attached to the outer side of the sleeve 4b by sandblasting to enhance the friction between the surface of the sleeve 4b and the blade 22, so as to enhance the triboelectric charging capability of the developer, and a jump-type development is performed between the developing roller 4 and the photosensitive drum 3. Alternatively, a conductive elastic resin layer may be attached to the outer surface of the sleeve 4b made of aluminum, and in this way, the developing roller 4 and the photosensitive drum 3 adopt a contact developing method, and the developer that has not been transferred to the surface of the photosensitive drum 3 can be additionally recovered by the elastic resin layer on the developing roller 4.

As shown in fig. 3 to 5, a conductive end photosensitive frame edge cover 12 is further disposed at the conductive end of the processing box, and the conductive end developing frame edge cover 11 is movably coupled to the conductive end photosensitive frame edge cover 12, specifically, the conductive end developing frame edge cover 11 is rotatably connected to the conductive end photosensitive frame edge cover 12. A chip 15 is mounted on the conductive-end photosensitive-frame-side cover 12 for data communication with the image forming apparatus, and the chip 15 stores therein information such as the type of the process cartridge, the page yield, and the like. A developing roller electrode 14 is mounted on the developing frame for supplying power to the developing roller, and a charging roller electrode 13 is mounted on the conductive end photosensitive frame side cover 12 for supplying power to the charging roller (not shown in the figure). The sealing tape 16 is attached to the developing frame for preventing the developer of the process cartridge from leaking out of the developer accommodating portion of the developing unit before use. The driving side cover 9 of the driving end is used to cover the gear train of the process cartridge to protect the gear train from contamination and damage from the outside.

The utility model has the advantages that: the powder outlet knife adopts a plastic blade with lower price and good powder control to replace the existing metal sheet, and a powder feeding roller with high price is cancelled.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A process cartridge detachably mountable to an image forming apparatus, comprising:

a photosensitive drum rotatably supported by the photosensitive frame;

a driving gear located at a distal end of the photosensitive drum, provided at the driving end of the process cartridge, and having gear teeth on an outer circumference thereof for engaging with a power output gear of an image forming apparatus to receive a driving force;

the chip is arranged at the conductive end of the processing box;

the developing roller is characterized by further comprising a developing roller with a magnetic core arranged inside, a developing roller gear is arranged at the tail end of the developing roller in the length direction, and the developing roller gear is directly meshed with the gear teeth of the driving gear to receive driving force.

2. A process cartridge according to claim 1, further comprising a powder discharging blade fixedly mounted on said developing frame, said powder discharging blade being adapted to contact an outer surface of said developing roller to limit a thickness of the developer formed on the outer surface of said developing roller, said powder discharging blade having a blade holder and a blade, said blade holder being made of a metal material, and said blade being made of an elastic plastic.

3. A process cartridge according to claim 1, wherein said conductive terminal is provided with a developing roller electrode and a charging roller electrode.

4. A process cartridge according to claim 3, wherein a photosensitive frame edge cover is provided on said photosensitive frame, and said chip and said charging roller electrode are mounted on said photosensitive frame edge cover.

5. A process cartridge according to claim 3, wherein said conductive terminal is provided with a developing frame edge cover, and said developing roller electrode is mounted on said developing frame.

6. A process cartridge according to claim 1, wherein said developer is a magnetic developer.

7. A process cartridge according to claim 1, wherein a seal strip for sealing said developer accommodating portion is attached to said developing frame.