CN217655423U

CN217655423U - Developing roller cleaning device and printer

Info

Publication number: CN217655423U
Application number: CN202221364100.9U
Authority: CN
Inventors: 阮正阳; 谢小冬
Original assignee: Ningbo Deli Kebei Technology Co Ltd
Current assignee: Ningbo Deli Kebei Technology Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-10-25
Anticipated expiration: 2032-05-31

Abstract

The utility model relates to a developer roll cleaning device and printer, including setting up the developer roll of powder storehouse outlet opening department, its characterized in that: the cleaning device further comprises cleaning pieces which are arranged corresponding to the non-working areas at the two ends of the developing roller respectively, and the cleaning pieces are attached to the outer surface of the non-working area at the end part of the developing roller. The utility model provides a developer roll cleaning device has set up the cleaning member respectively corresponding to the non-work area at developer roll both ends, and this cleaning member can effectively clear away the powdered ink that spills to developer roll non-work area, and the image printing is effectual has been guaranteed in the sealing of reinforcing carbon dust, has avoided leaking the carbon dust pollution problem that the powder too much leads to.

Description

Developing roller cleaning device and printer

Technical Field

The utility model relates to a printer technical field, concretely relates to developer roll cleaning device still relates to the printer of using this developer roll cleaning device.

Background

The selenium drum is a core imaging component in the laser printer, and the quality of the printing quality of the laser printer is determined by the selenium drum to a large extent. The toner cartridge mainly comprises a toner bin, a photosensitive drum, a charging roller, a developing roller, a scraper and a plurality of rotating gears. When a laser printer is used for printing, the surface of a photosensitive drum is uniformly charged by a charging roller to enable the surface of the photosensitive drum to obtain a certain electric potential, then the photosensitive drum is exposed by a laser beam carrying image-text image information, so that an electrostatic latent image is formed on the surface of the photosensitive drum, the latent image is developed by a developing roller and is converted into a visible toner image, the toner is transferred onto common paper under the action of an electric field of a transfer electrode when passing through a transfer area, and finally the toner is fixed by a preheating plate and a high-temperature hot roller, so that characters and images are fused on the paper. After the image-text information is printed, the cleaning roller removes the toner which is not transferred, the electricity-eliminating lamp removes the residual charge on the photosensitive drum, and the photosensitive drum is thoroughly cleaned by the cleaning paper system, so that a new working cycle can be started.

Although having set up the cleaning roller among the current toner cartridge and having realized the cleanness to the developer roll, the toner of cleaning roller mainly used clean developer roll operational area, but based on the magnetism of developer roll, the non-operational area at its both ends also can adsorb the carbon dust, and then pollute the axle sleeve at developer roll both ends, but do not set up the cleaning device who is used for special clean developer roll tip in the current toner cartridge and realize the cleanness of developer roll tip non-operational area, so lead to developer roll epaxial accumulated powder, both ends carbon dust card causes the sensitization drum wearing and tearing between sensitization drum and the developer roll, and influence the interval between developer roll and the sensitization drum and cause and portrait badly, the carbon dust that spills also can pollute and portrait.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem that provides a toner to the developer roll tip to above-mentioned prior art cleans, guarantees to print image quality's developer roll cleaning device.

The utility model discloses the second technical problem that will solve provides a printer that print image quality is better to above-mentioned prior art.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: the utility model provides a developer roll cleaning device, is including setting up the developer roll of powder storehouse outlet opening department, its characterized in that: the cleaning device further comprises cleaning pieces which are arranged corresponding to the non-working areas at the two ends of the developing roller respectively, and the cleaning pieces are attached to the outer surface of the non-working area at the end part of the developing roller.

The installation of the cleaning piece is convenient, and the cleaning piece is fixed on the powder bin.

Preferably, the cleaning piece is fixed on the end part of the bottom wall of the powder bin.

In order to store the toner cleaned by the cleaning piece conveniently, the powder bin is provided with a powder storage groove on the cleaning side of the cleaning piece.

In order to guide the toner cleaned on the cleaning piece into the toner storage groove conveniently, the cleaning side of the cleaning piece is provided with a powder guide surface which is inclined downwards and in the direction of the toner storage groove.

Preferably, the cleaning member is an elastic member, and the cleaning member is clamped between the powder bin and the developing roller in an interference manner and is pressed on a non-working area of the developing roller.

Preferably, the cleaning member includes a sponge layer and a felt layer attached to one side of the sponge layer, the felt layer being attached to an outer surface of the non-working area of the developing roller.

Preferably, the developing roller is sleeved with shaft sleeves at two ends, and the joint of the developing roller and the shaft sleeves forms a non-working area at the end of the developing roller.

In order to avoid the carbon powder to move to the two ends of the developing roller as far as possible and reduce the cleaning amount of the cleaning piece, the two ends of the powder outlet of the powder bin are respectively provided with a sealing piece which is abutted to the outer surface of the developing roller, and the sealing pieces are positioned on the inner side of the cleaning piece.

The utility model provides a technical scheme that above-mentioned second problem adopted does: a printer, includes powder storehouse, its characterized in that: the developing roller cleaning device is further included.

Compared with the prior art, the utility model has the advantages of: the utility model provides a developer roll cleaning device has set up the cleaning member respectively corresponding to the non-work area at developer roll both ends, and this cleaning member can effectively clear away the powdered ink that spills to developer roll non-work area, and the image printing is effectual has been guaranteed to the sealing of reinforcing carbon dust, has avoided leaking the carbon dust pollution problem that the powder too much leads to.

Drawings

Fig. 1 is a perspective view of a developing roller cleaning device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a cleaning device for a developing roller according to an embodiment of the present invention

Fig. 3 is a sectional view of the developing roller cleaning device according to the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 3, the developing roller cleaning device in the present embodiment is used to clean the non-working area of the developing roller 2, and usually the working area of the developing roller 2 may have other cleaning structures for cleaning.

The developing roller 2 is generally disposed near the powder outlet 11 of the powder hopper 1, so that the toner in the powder hopper 1 can be adsorbed thereon, and a toner film is formed on the developing roller 2 by the doctor blade. In order to reduce the powder leakage of the carbon powder from the two ends of the developing roller 2 as much as possible, the sealing elements 4 are arranged on the two sides of the powder outlet 11 of the powder bin 1, and the sealing elements 4 are propped against the outer surface of the developing roller 2, so that the carbon powder can be prevented from leaking outwards as much as possible. Based on the position of the sealing members 4, the region of the developing roller 2 between the two sealing members 4 is a working region, and the end portion of the developing roller 2 outside the two sealing members 4 constitutes a non-working region of the developing roller 2. The developing roller 2 is sleeved with the shaft sleeves 21 at two ends thereof, so that the developing roller 2 and the photosensitive drum can rotate in a transmission manner. The joint of the developing roller 2 and the sleeve 21 thus forms a non-working area of the developing roller 2. Although based on the effect of sealing member 4, can be to a great extent restriction carbon dust leak to the non-working area of developer roll 2 outward, based on the magnetism of developer roll 2 during operation, can avoid hardly having a small amount of carbon dust and be adsorbed to the non-working area of developer roll 2, long-time work in, can pile up in the non-working area of developer roll 2, if do not carry out cleaning to these carbon dust, the carbon dust card at developer roll 2 both ends causes the sensitization drum wearing and tearing between sensitization drum and developer roll 2, influence even between developer roll 2 and the sensitization drum interval and cause the portrait bad, the carbon dust that leaks also can pollute and print the portrait. The developing roller cleaning device in the present embodiment can clean the non-working areas at both ends of the developing roller 2, thereby avoiding these problems.

The developer roll cleaning device in the embodiment comprises a developer roll 2 with a powder outlet 11 arranged in a powder bin 1 and cleaning pieces 3 respectively arranged in non-working areas at two ends of the developer roll 2, wherein the cleaning pieces 3 are attached to the outer surface of the non-working area at the end part of the developer roll 2, and along with the rotation of the developer roll 2, the non-working areas at two ends of the developer roll 2 can be cleaned and further adsorbed on the developer roll.

The cleaning member 3 is fixed on the powder bin 1 near the powder outlet 11 side, usually the bottom wall of the powder bin 1 will extend forward, and the developing roller 2 is disposed above the bottom wall, so that the cleaning member 3 is disposed on the end of the bottom wall of the powder bin 1 and below the end of the developing roller 2 from the side near the powder outlet 11, the cleaning member 3 is attached on the non-working area surface of the developing roller 2, and the non-working area is the joint of the developing roller 2 and the shaft sleeve 21.

The cleaning member 3 in this embodiment is an elastic member, and the cleaning member 3 is inserted between the bottom wall of the powder bin 1 and the developing roller 2 by interference and is pressed on the non-working area of the developing roller 2. Specifically, the cleaning member 3 includes a sponge layer 31 and a felt layer 32 attached to one side of the sponge layer 31, the felt layer 32 being attached to the outer surface of the non-working area of the developing roller 2. The sponge layer 31 can provide a large deformation space, and the felt layer 32 has certain cleaning capability and small friction force, so that the cleaning of carbon powder on the non-working area of the developing roller 2 can be realized, excessive resistance to the rotation of the developing roller 2 cannot be caused, and the normal work of the developing roller 2 is ensured. In the long-term working process, the cleaned carbon powder is accumulated at the contact angle of the cleaning piece 3, and the carbon powder falls off after being accumulated to a certain degree. In order to store the toner cleaned by the cleaning members 3 conveniently and avoid the leakage of toner, a toner outlet groove is arranged on the toner hopper 1 corresponding to each cleaning member 3, and a toner storage groove 12 is arranged on the cleaning side of the cleaning member 3, wherein the cleaning side is specifically determined based on the rotation direction of the developing roller 2, namely based on the rotation direction of the developing roller 2, the cleaning member 3 and the developing roller 2 are arranged on the initial contact position side.

In order to guide the toner cleaned on the cleaning member 3 into the toner storage tank 12 conveniently, the cleaning side of the cleaning member 3 is provided with a powder guide surface 30 which is inclined downwards and in the direction of the toner storage tank 12. The carbon powder cleaned in this way can more accurately fall into the powder outlet groove through the powder guide surface 30, and the situation that the carbon powder falls to other positions to cause powder leakage is avoided.

In order to prevent the carbon powder from moving to the two ends of the developing roller 2 as much as possible and reduce the cleaning amount of the cleaning piece 3, the two ends of the powder outlet 11 of the powder bin 1 are respectively provided with a sealing piece 4 which is abutted against the outer surface of the developing roller 2, and the sealing pieces 4 are positioned at the inner side of the cleaning piece 3. The sealing element 4 can ensure that the working area of the developing roller 2 can work better, and can effectively prevent the carbon powder from moving to the non-working area of the developing roller 2, so that the amount of the carbon powder adsorbed to the non-working area of the developing roller 2 is reduced, and the workload of the cleaning element 3 is also reduced.

Adsorb the carbon powder when developer roll 2 rotates, some carbon powder spill from the clearance of both sides sealing member 4, because the magnetism of developer roll 2 is adsorbed the non-working area at both ends by developer roll 2 to pollute the axle sleeve 21 at developer roll 2 both ends, based on the rotation of developer roll 2 this moment, cleaning member 3 also carries out cleaning to the carbon powder on the developer roll 2 non-working area simultaneously, and then scrapes the carbon powder on developer roll 2 tip, axle sleeve 21 linking area. The cleaned carbon powder is accumulated at the contact angle of the cleaning piece 3, and the carbon powder accumulated to a certain degree falls into the powder storage tank 12 on the powder bin 1, so that the cleaning of the carbon powder on the non-working area of the developing roller 2 is effectively realized, and the leaked carbon powder can be sealed. And some carbon powder which is stuck on the working surfaces of the developing roller and the shaft sleeve 21 and is relatively stubborn is adsorbed into the felt layer 32 through the felt layer 32 on the cleaning piece 3 through the self cleaning capability, so that the carbon powder is thoroughly cleaned.

The utility model provides a developer roll cleaning device has set up cleaning member 3 respectively corresponding to the non-work area at 2 both ends of developer roll, and this cleaning member 3 can effectively clear away the powdered ink that spills to 2 non-work areas of developer roll, and the image printing is respond well to the sealed of reinforcing carbon dust, has avoided leaking the carbon dust pollution problem that the powder leads to too much.

The utility model discloses still relate to a printer, including powder storehouse 1 and aforementioned developer roll cleaning device. The printer using the developing roller cleaning device can not pollute the picture due to the powder leakage condition at the end part of the developing roller.

Directional terms such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the present invention, but these terms are used herein for convenience of description only and are determined based on example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite or coincident with the direction of gravity.

Claims

1. The utility model provides a developer roll cleaning device, is including developer roll (2) that set up powder storehouse (1) powder outlet (11) department, its characterized in that: the cleaning device is characterized by further comprising cleaning pieces (3) which are arranged corresponding to the non-working areas at the two ends of the developing roller (2) respectively, wherein the cleaning pieces (3) are attached to the outer surface of the non-working area at the end part of the developing roller (2).

2. The developing roller cleaning device according to claim 1, characterized in that: the cleaning piece (3) is fixed on the powder bin (1).

3. The developing roller cleaning device according to claim 2, characterized in that: the cleaning piece (3) is fixed on the end part of the bottom wall of the powder bin (1).

4. The developing roller cleaning device according to claim 2, characterized in that: and a powder storage groove (12) is arranged on the cleaning side of the cleaning piece (3) on the powder bin (1).

5. The developing roller cleaning device according to claim 4, characterized in that: the cleaning side of the cleaning piece (3) is provided with a powder guide surface (30) which is inclined downwards and in the direction of the powder storage groove (12).

6. The developing roller cleaning device according to any one of claims 1 to 5, characterized in that: the cleaning piece (3) is an elastic component, and the cleaning piece (3) is clamped between the powder bin (1) and the developing roller (2) in an interference manner and is pressed in a non-working area of the developing roller (2).

7. The developing roller cleaning device according to claim 6, characterized in that: the cleaning piece (3) comprises a sponge layer (31) and a felt layer (32) connected to one side of the sponge layer (31), and the felt layer (32) is attached to the outer surface of the non-working area of the developing roller (2).

8. The developing roller cleaning device according to any one of claims 1 to 5, characterized in that: the both ends cover of developer roll (2) is equipped with axle sleeve (21), the department of linking of developer roll (2) and axle sleeve (21) forms the non-work area of developer roll (2) tip.

9. The developing roller cleaning device according to any one of claims 1 to 5, characterized in that: and two ends of the powder outlet (11) of the powder bin (1) are respectively provided with a sealing element (4) which is propped against the outer surface of the developing roller (2), and the sealing element (4) is positioned on the inner side of the cleaning element (3).

10. A printer comprising a powder hopper (1), characterized in that: further comprising the developing roller cleaning device according to any one of claims 1 to 9.