CN209992810U

CN209992810U - Powder storehouse

Info

Publication number: CN209992810U
Application number: CN201920967504.9U
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 a powder storehouse for sensitization drum support, the powder storehouse contains powder storehouse frame, developer roll, sets up at the count gear of the one end of the lateral wall at processing box length direction both ends, sets up at the drive gear of the other end of the lateral wall at processing box length direction both ends, with drive gear is located the powder hole of irritating with one side lateral wall, just the powder storehouse passes through powder storehouse frame surface with sensitization drum support butt is fixed on the sensitization drum support. Through such setting, powder storehouse is easily irritated the powder, has also avoided the powder storehouse surface to damage because reference column and sensitization drum support touch.

Description

Powder storehouse

Technical Field

The application relates to the field of electronic imaging, in particular to a powder bin.

Background

A powder hopper is a component that is widely used in the field of electronic imaging. The powder hopper contains a powder hopper frame, and the powder hopper stores developer therein, and usually also has a developing roller for applying the developer to the photosensitive drum. The developing roller is rotatably supported by the powder hopper frame. The photosensitive drum is not disposed in the powder hopper, but is disposed in the photosensitive drum holder. The electrophotographic apparatus is operable to print by mounting the powder hopper on the photoreceptor drum support to bring the developer roller into contact with the photoreceptor drum and mounting the combination of the photoreceptor drum support and the powder hopper into the electrophotographic apparatus.

Because the powder bin is only a device for storing the developer, the service life of the developing roller 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 powdered and reused due to the consideration of environmental protection and economy.

Meanwhile, the powder bins are of different models, and different protruding positioning columns are arranged on the side walls of the two ends of the different powder bins in the length direction. 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.

SUMMERY OF THE UTILITY MODEL

The application discloses novel powder storehouse for sensitization drum support, the powder storehouse contains: a powder bin frame; a developing roller rotatably supported by the powder hopper frame; the counting gear is arranged at one end of the side wall at the two ends of the processing box in the length direction; the driving gear is arranged at the other end of the side wall at the two ends of the length direction of the box; the powder filling hole and the driving gear are positioned on the same side wall; wherein the powder bin is fixed on the photosensitive drum bracket by abutting the surface of the powder bin frame with the photosensitive drum bracket.

Preferably, the powder filling hole is retracted inwards relative to the side wall of the end of the driving gear.

Preferably, the powder bin comprises an upper surface, and the powder filling hole is adjacent to the upper surface.

Preferably, the powder bin further comprises a guide surface, one end of the guide surface is adjacent to the powder filling hole, and the other end of the guide surface is adjacent to the side wall of the driving gear.

Preferably, the powder hopper includes a bottom surface, a recess adjacent to the bottom surface, and an abutment surface, the bottom surface, the recess, and the abutment surface abutting against the photosensitive drum holder.

Preferably, the side wall of the end of the counter gear and the side wall of the end of the drive gear abut against the photosensitive drum holder.

The content of the present application will be further explained by means of specific embodiments.

Drawings

FIG. 1 is a perspective view of a prior art powder bin;

FIG. 2 is a perspective view of one side wall of the drive gear of the present application;

FIG. 3 is a perspective view of the powder hopper of the present application;

FIG. 4 is a perspective view of the bottom of the powder hopper of the present application;

FIG. 5 is a perspective view of the powder hopper of the present application with the protective cover 160 removed;

fig. 6 to 8 are perspective views of a corresponding photosensitive drum holder.

Detailed Description

Example one

The application discloses novel powder storehouse, such powder storehouse have with whitewashed convenient and can not cause the advantage that powder storehouse and sensitization drum support damaged because of the reference column.

Fig. 1 is a perspective view of a conventional powder hopper. Wherein the counting gear is arranged in the counting gear seat 110, and counts the stirring times of the powder bin stirring frame so as to judge whether residual powder exists in the powder bin. The old powder filling hole 120 is located on one of two side walls of two sections of the powder bin in the length direction, and the side wall and the counting gear are located on the same side wall. Meanwhile, the old powder filling hole 120 is located below the gear set where the counting gear is located, that is, the old powder filling hole 120 is farther away from the side wall of one side of the counting gear than the counting gear set. Therefore, when the old powder filling hole 120 is used for refilling the powder bin with powder, the whole gear set needs to be removed. This is not so inconvenient since the counter gear itself would have to be removed and reset before counting.

However, the prior art has solved the technical problem of removing the counter gear to reset the counter, i.e. it is no longer necessary to remove the counter gear. Meanwhile, the structure that the counting gear can be reset without being taken down is complex, and the common user can break the structure, so that the old powder filling hole 120 arranged below the counting gear set can obviously not meet the actual requirement, and a powder filling hole which is convenient and easy to fill powder is required to be redesigned on the powder box.

Because the powder filling hole arranged on the surface of the powder bin shell can influence the overall strength of the powder bin, a new powder filling hole is arranged at the other end of the two sections of the powder bin in the length direction. Fig. 2 is a perspective view of a side wall of the driving gear according to the present application. The driving gear may be installed in the driving frame 130, and the powder filling hole 210 is provided on the same side wall as the driving gear. A handle 140 is also provided on the powder bin.

Fig. 3 is a perspective view of the powder hopper of the present application. The upper surface 150 is a surface that is located on the upper side when the powder hopper is mounted into the photosensitive drum holder. Preferably, the powder filling hole 210 is inwardly retracted to a position adjacent to the upper surface 150 relative to a side wall of one side of the driving gear, so as to avoid a guide surface 220, one end of the guide surface 220 is adjacent to the powder filling hole, and the other end of the guide surface is adjacent to a side wall of one side of the driving gear, so that a user can fill powder more conveniently, and meanwhile, the powder filling hole 210 is relatively far away from a gear set where the driving gear is located, so that pollution caused by the fact that a developer enters the gear set where the driving gear is located is avoided.

The protective cover 160 is detachably mounted on the powder hopper for protecting the developing roller under the protective cover 160 from contamination. When the powder hopper is mounted on the photosensitive drum holder, the protective cover 160 needs to be removed first to expose the developing roller, so that the developing roller can contact the photosensitive drum to transfer the developer.

In a conventional powder bin, one or more positioning columns are usually arranged on the surface of the conventional powder bin, and the positioning columns are in contact with and locked with the photosensitive drum support, so that the powder bin is firmly installed on the photosensitive drum support, and the developing roller and the photosensitive drum are tightly contacted. However, this design also has a problem in that, since the toner hopper has a small capacity, the toner needs to be frequently removed and added when the printing amount is large. With the increase of the number of times of disassembly, once the operation is careless, the positioning column is likely to be damaged and broken, and the photosensitive drum bracket is likely to be damaged. This is more common in cold weather. A solution is therefore needed to prevent such damage for environmental and economic reasons. The application discloses fix novel powder storehouse on sensitization drum support through powder storehouse frame surface and sensitization drum support butt.

Fig. 4 is a perspective view of the bottom of the powder hopper in the present application. The bottom surface 170 is located at the bottom when the powder hopper is mounted on the photosensitive drum holder, and is located forward in the mounting direction, abutting the protective cover 160 and the developing 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. Fig. 5 is a perspective view of the powder hopper with the protective cover 160 removed, and an abutment surface 190 is provided at a position forward in the powder hopper mounting direction and above the developing roller.

Fig. 6 to 8 are perspective views of a corresponding photosensitive drum holder. The photoreceptor drum holder contains a photoreceptor drum holding bin 400 for holding a photoreceptor drum and a corona wire for charging the photoreceptor drum. The sensitization drum support still contains the powder storehouse that holds the powder storehouse part and holds the storehouse, and wherein the powder storehouse holds the storehouse part and has a plurality of holding surfaces and powder storehouse to contact, is respectively: a third contact surface 370 in contact with the bottom surface 170; a projection 380 contacting the recess 180; a fourth contact surface 390 in contact with the abutment surface 190. Preferably, to make the mounting more stable and secure, a first contact surface 310 is provided which contacts the end wall of the reset gear and a second contact surface 320 is provided which contacts the end wall of the drive gear. The position of the powder bin is limited by a plurality of contact surfaces and bulges on the photosensitive drum support, and the powder bin can be accurately and firmly arranged on the photosensitive drum support even if no positioning column is arranged. Since the structure of the photosensitive drum holder is not the gist of the present application, it is not described in detail.

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 powder hopper for a photosensitive drum holder, comprising:

a powder bin frame;

a developing roller rotatably supported by the powder hopper frame;

the counting gear is arranged at one end of the side wall at the two ends of the processing box in the length direction;

the driving gear is arranged at the other end of the side wall at the two ends of the length direction of the processing box;

the powder filling hole and the driving gear are positioned on the same side wall;

wherein the powder bin is fixed on the photosensitive drum bracket by abutting the surface of the powder bin frame with the photosensitive drum bracket.

2. A powder hopper according to claim 1, wherein the powder filling aperture is inwardly indented with respect to the drive gear end side wall.

3. A powder hopper according to claim 2, wherein the powder hopper includes an upper surface, and the powder filling aperture is adjacent the upper surface.

4. A powder hopper according to claim 2 or claim 3, further comprising a guide surface, one end of the guide surface being adjacent the powder filling aperture and the other end being adjacent the drive gear end side wall.

5. A powder hopper according to claim 1, wherein said powder hopper includes a bottom surface, a recess adjacent to said bottom surface, and an abutment surface, said bottom surface, recess, and abutment surface abutting said photosensitive drum holder.

6. A powder hopper according to claim 5, wherein a count gear end side wall and said drive gear end side wall abut against said photosensitive drum holder.