CN209992808U

CN209992808U - Photosensitive drum support

Info

Publication number: CN209992808U
Application number: CN201920967556.6U
Authority: CN
Inventors: 梁斌; 沈宁飞
Original assignee: ZHUHAI LINGYIN TECHNOLOGY Co Ltd
Current assignee: ZHUHAI LINGYIN TECHNOLOGY Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-01-24
Anticipated expiration: 2029-06-26

Abstract

The application discloses sensitization drum support, sensitization drum support is used for electron image device, sensitization drum support is used for installing the powder storehouse. The sensitization drum support contains frame main part, sensitization drum, corona wire, with the third contact surface of powder storehouse bottom surface contact, with the fourth contact surface of powder storehouse butt face contact with the arch of the sunken contact in powder storehouse. Through the contact cooperation of sensitization drum support and powder storehouse, can make accurate, stable the installing on sensitization drum support under the condition that does not set up the reference column in powder storehouse.

Description

Photosensitive drum support

Technical Field

The application relates to the field of electronic imaging, in particular to a photosensitive drum support.

Background

The photoreceptor drum holder is used in an electrophotographic apparatus, and a toner hopper is generally mounted on the photoreceptor drum holder, and the combination of the photoreceptor drum holder and the toner hopper is mounted in the electrophotographic apparatus, thereby operating the electrophotographic apparatus for a normal printing operation. The powder bin is internally stored with a developer and comprises a developing roller. The photosensitive drum support comprises a frame main body, a photosensitive drum and a corona wire for charging the photosensitive drum. The photosensitive drum takes developer from the developing roller. Because the powder bin is only a device for storing the developer, the service life of the developing roller, the photosensitive drum and other components is far longer than that of the developer in the powder bin after being used once, and therefore, the powder bin needs to be added with powder for reuse due to the consideration of environmental protection and economy.

In the prior art, different raised positioning columns are arranged on the side walls of two sections of the powder bins in the length direction of different models. The positioning columns assist in combination of the powder bin and the photosensitive drum support, so that the powder bin is firmly installed in the photosensitive drum support. However, due to the capacity problem of the powder bin, after the powder is added for many times, if the operation of an operator is not careful, the damage of the powder bin or the photosensitive drum bracket is easily caused, and the normal printing is influenced. Therefore, a novel photosensitive drum bracket and a powder bin matched with the photosensitive drum bracket are needed to avoid the influence of the positioning column on the service life.

SUMMERY OF THE UTILITY MODEL

The application discloses sensitization drum support for electronic imaging device, sensitization drum support is used for installing the powder storehouse, sensitization drum support contains: a frame body; the photosensitive drum is contacted with the developing roller of the powder bin; a corona wire charging the photosensitive drum; a third contact surface in contact with the bottom surface of the powder bin; the fourth contact surface is in contact with the powder bin abutting surface; the protrusion is connected with the powder bin in a concave and abutting mode.

Preferably, the photosensitive drum bracket comprises a first contact surface, and the first contact surface is abutted with the first side wall of the powder bin; the photosensitive drum support comprises a second abutting surface, and the second abutting surface abuts against the second side wall of the powder bin.

Preferably, a projection of the third contact surface in the vertical direction is located below a projection of the photosensitive drum in the vertical direction.

Preferably, a projection of the fourth abutment surface in the vertical direction is located above a projection of the photosensitive drum in the vertical direction.

Preferably, the projection abuts the third abutment surface.

Preferably, any one of the photosensitive drum supports comprises one or more of a first clamping groove, a second clamping groove, a third clamping groove and a fourth clamping groove, and the first clamping groove, the second clamping groove, the third clamping groove and the fourth clamping groove are abutted to the protruding positioning columns on the side walls of the powder bin.

Drawings

FIGS. 1-3 are perspective views of a powder hopper associated with a photoreceptor drum support in the present application;

FIG. 4 is a perspective view of the photosensitive drum holder;

FIG. 5 is a perspective view of the photoreceptor drum mount from another perspective;

FIG. 6 is a perspective view of the photosensitive drum frame from another perspective

FIG. 7 is a perspective view of the photosensitive drum holder viewed from the outside of the second contact surface;

fig. 8 is a perspective view of the photosensitive drum holder viewed from the outside of the first contact surface.

Detailed Description

Example one

The application discloses novel sensitization drum support supports through the butt in this sensitization drum support and powder storehouse, can be under the condition that does not use the reference column with accurate, stable fixed in powder storehouse and sensitization drum support.

Fig. 1-3 are perspective views of a powder hopper associated with a photoreceptor drum support in the present application. The powder hopper includes a protective cover 160 for protecting the developing roller, and when the user wants to install the powder hopper into the photosensitive drum holder, the user needs to manually remove the protective cover 160 before installing the powder hopper. The protective cover 160 and the developing roller are located forward in the mounting direction. For simplicity, the developing roller is not shown in the figure. Fig. 1 and 3 are perspective views of the powder hopper including the protective cover 160, and fig. 2 is a perspective view of the powder hopper not including the protective cover 160. The powder hopper comprises a plurality of faces, wherein a bottom face 170 is located at the bottom of the powder hopper when mounted on the photoreceptor drum support, and is located forward in the mounting direction, abutting the protective cover 160 and the developer roller. A recess 180 is formed on the side of the bottom surface 170 opposite to the mounting direction, and the recess 180 is adjacent to the bottom surface 170. An abutting surface 190 is provided at a position located forward in the powder hopper mounting direction and above the developing roller. Two side walls, namely a first side wall 110 and a second side wall 120, are also arranged at two ends of the powder bin in the length direction. The first sidewall 110 is located at the right side of the installation direction, and the second sidewall 120 is located at the left side of the installation direction. In the present embodiment, the first sidewall 110 of the powder bin is provided with a counting gear (not shown), so the first sidewall 110 can also be called a counting end sidewall; the second side wall 120 is provided with a driving gear (not shown) for receiving a driving force from the electronic image forming apparatus, and therefore the second side wall 120 may also be referred to as a driving-end side wall. In the above-described powder hopper, the side wall of the powder hopper does not include the positioning column, but the powder hopper is fixed to the photosensitive drum holder by abutting these surfaces and the side wall against the photosensitive drum holder. As will be described in more detail below.

Fig. 4 is a perspective view of the photosensitive drum holder. Wherein the sensitization drum support contains two parts, and the sensitization drum that holds sensitization drum and corona wire holds storehouse 400 and the powder storehouse that is used for installing the powder storehouse and holds the storehouse. As shown in fig. 4, the drum accommodating chamber includes a second contact surface 320 for contacting the second sidewall 120 of the powder chamber. The third contact surface 370 is located deep in the powder hopper accommodating chamber near the contact position of the photosensitive drum and the developing roller, for abutting against the bottom surface 170 of the powder hopper. The projection of the third contact surface in the vertical direction is positioned below the photosensitive drum. The projection 380 abuts the third contact surface 370 for mating abutment with the recess 180 of the powder hopper.

FIG. 5 is a perspective view of the photosensitive drum frame from another perspective. The observation direction is close to the powder bin installation direction. The fourth contact surface 390 is located above the photosensitive drum relative to the photosensitive drum (i.e., the projection of the fourth contact surface 390 in the vertical direction is located above the projection of the photosensitive drum in the vertical direction) for abutting against the powder hopper abutting surface 190.

Fig. 6 is a perspective view of the photosensitive drum holder from yet another perspective. The first contact surface 310 on the powder bin accommodating bin and on the right side of the powder bin installation direction is used for abutting against the first side wall 110 of the powder box.

Although the photoreceptor drum accommodating bin containing only the third contact surface 370, the fourth contact surface 390 and the projection 380 can fix the powder bin on the photoreceptor drum bracket by abutting constraint, preferably, for the sake of safety, the first contact surface 310 and the second contact surface 320 are also required to abut against the first side wall 110 and the second side wall 120 of the powder box respectively, so that the installation is more secure and no shaking occurs.

Although the powder storehouse and the sensitization drum support in this application are durable for powder storehouse and sensitization drum support among the prior art, because the powder storehouse stock that contains the reference column among the prior art is very big, in order to avoid the user to purchase the back discovery and can not use and cause unnecessary burden, the sensitization drum support in this application also is compatible with ordinary, the powder storehouse that contains the reference column. Fig. 7 is a perspective view of the photosensitive drum holder viewed from the outside of the second contact surface 320, and fig. 8 is a perspective view of the photosensitive drum holder viewed from the outside of the first contact surface 310. As shown in fig. 7 and 8, the photosensitive drum holder is provided with a first card slot 510, a second card slot 520, a third card slot 530, and a fourth card slot 540. Through the contact of the clamping grooves and the protruding positioning columns on the side walls of the powder bins, the traditional powder bins containing the positioning columns can be tightly and firmly arranged on the photosensitive drum support, so that the printing work can be normally finished.

The present invention has been described above through the following embodiments, but the present invention is not limited thereto, and also covers various modifications made within the scope of the technical solution of the present invention according to the idea of the present invention. The present invention has been described above through the following embodiments, but the present invention is not limited thereto, and also covers various modifications made within the scope of the technical solution of the present invention according to the idea of the present invention.

Claims

1. A photosensitive drum holder for an electronic image forming apparatus, said photosensitive drum holder being for mounting a powder hopper, said photosensitive drum holder comprising:

a frame body;

the photosensitive drum is contacted with the developing roller of the powder bin;

a corona wire charging the photosensitive drum;

a third contact surface in contact with the bottom surface of the powder bin;

the fourth contact surface is in contact with the powder bin abutting surface;

the protrusion is connected with the powder bin in a concave and abutting mode.

2. A photosensitive drum holder according to claim 1, wherein said photosensitive drum holder includes a first contact surface, said first contact surface abutting the first side wall of the powder hopper; the photosensitive drum support comprises a second abutting surface, and the second abutting surface abuts against the second side wall of the powder bin.

3. A photosensitive drum holder according to claim 1, wherein a projection of said third contact surface in the vertical direction is located below a projection of said photosensitive drum in the vertical direction.

4. A photosensitive drum holder according to claim 1, wherein a projection of said fourth contact surface in the vertical direction is located above a projection of said photosensitive drum in the vertical direction.

5. A photosensitive drum mount according to claim 1, wherein said projection abuts said third contact surface.

6. A photosensitive drum support according to any one of claims 1 to 5, wherein said photosensitive drum support comprises one or more of a first locking groove, a second locking groove, a third locking groove and a fourth locking groove, and said first locking groove, second locking groove, third locking groove and fourth locking groove abut against said protruding positioning column on the side wall of said powder bin.