WO2012034502A1

WO2012034502A1 - Toner cartridge for laser printer

Info

Publication number: WO2012034502A1
Application number: PCT/CN2011/079507
Authority: WO
Inventors: 周忠宝
Original assignee: 珠海天威飞马打印耗材有限公司
Priority date: 2010-09-13
Filing date: 2011-09-09
Publication date: 2012-03-22
Also published as: CN201820081U

Abstract

A toner cartridge (300) for laser printers, comprising a developer roller (303) for delivering toner to an organic photo conductor drum (201) arranged inside an imaging compartment (200), and a toner hopper (301) for containing toner. Two supporting axles (305) are respectively and perpendicularly arranged at the upper inclined side of the developer roller (303) on the two sides of toner cartridge (300) along the axial direction of the developer roller (303). A supporting leg (304) is respectively extended from the toner cartridge (300) along the axial direction of the developer roller (303) and away from the two walls of the developer roller (303) and along the direction away from and perpendicular to the developer roller (303). The supporting legs (304) provide the supporting status of the toner cartridge (300) supported on the tail beam (205) of the imaging compartment (200) when the toner cartridge (300) is assembled into the imaging compartment (200). The tail beam (205) is arranged on the imaging compartment (200) at a location away from the organic photo conductor drum (201).

Description

Toner cartridge for laser printer

Technical field

The present invention relates to a toner cartridge for a laser printer, and more particularly to a toner cartridge including a developing roller, a powder feeding roller, a powder discharging knife, a stirring frame and a toner hopper, which feeds the toner contained in the toner hopper through the developing roller. The layout is applied to the electrostatic latent image area formed on the surface of the photosensitive drum to convert the electrostatic latent image into a visual image displayed by a developer such as toner. The present invention is based on a Chinese utility model patent application filed on Sep. 13, 2010, with the application number 201020526244.0, the content of which is incorporated herein by reference.

Background technique

Image forming apparatuses usually include a variety of models such as copiers, laser printers, facsimile machines, ribbon printers, and LED printers.

In the image forming apparatus of the laser scanning or laser irradiation type, the toner is the final imaging medium for realizing the conversion of the image ~ ~ light ~ ~ electricity ~ ~ map. The developing roller is disposed near the photosensitive drum to form an image on the photosensitive drum after the toner jumps over a very small gap between the developing roller and the photosensitive drum. The toner transported by the developing roller comes from the toner hopper. The toner storage capacity of the toner cartridge is limited by the rated volume of the cartridge. Therefore, the toner in the toner cartridge must be replenished after it is used up, or the toner cartridge containing the toner can be recycled as a whole. Other components of the cartridge such as the developing roller, the powder feeding roller, the powder discharging knife, the powder feeding frame, the toner cartridge, and the carrier compartment have not been fully utilized.

As a type of laser image forming apparatus, the main functional blocks of the laser printer include a laser scanning unit, a photoelectric conversion unit, a charging unit, a developing unit, a transfer unit, and a fixing unit.

The main components of the laser scanning unit are a laser generator and a light reflection transmission system composed of optical elements such as prisms and lenses.

The main component of the photoelectric conversion unit is a photosensitive drum.

The charging unit mainly includes a positive charge grid-controlled corona charging roller or other forms of charging roller.

The developing unit is composed of a powder storage chamber for storing toner, a carrier chamber for storing the magnetic carrier, a developing chamber, and a developing roller. The developing roller, the powder feeding roller, and the powder discharging knife are disposed in the developing chamber. The powder feeding rack and the toner hopper together form a powder storage chamber.

The transfer unit mainly includes a transfer roller.

The fixing unit is composed of a heat roller and a pressure roller.

A common toner cartridge or process cartridge usually includes a photoelectric conversion unit, a charging unit, a developing unit, and the like, which are functions of a light-to-electricity-to-image conversion function. This type of construction generally obtains a multi-functional integrated toner cartridge. Or process the box. There are also ways to distinguish different functions for different layouts. The photoelectric conversion unit and the charging unit are directly disposed on the laser printer main unit, and the toner cartridge includes only the developing unit. This configuration can only obtain a single development function. The toner cartridge, such a single-function toner cartridge, is matched to the laser printer mainframe in the form of an assembly.

In the state in which the toner cartridge is loaded into the laser printer, the surface of the photosensitive drum is uniformly charged by the charging roller. The laser scanner emits a modulated laser beam containing image information to the photosensitive drum, and after the laser irradiation, forms a static voltage map having a different distribution on the surface of the photosensitive drum, that is, an electrostatic latent image corresponding to the image to be reproduced. Thereafter, the toner from the developing roller is in turn adsorbed on the surface of the photosensitive drum, and after covering the electrostatic latent image, it is converted into a visible image which can be visually observed. As the photosensitive drum rotates, the visible image formed by the toner on the surface of the photosensitive drum is transposed to the position where the transfer roller is located. The toner in the form of visible image is transferred onto the surface of the recording medium such as paper by the transfer voltage of the transfer roller, and then the visible image on the recording medium is heated and pressurized by the heating roller and the pressure roller. The visible image formed by the toner is permanently cured on the recording medium. This completes a basic imaging workflow that, as a result of repeated cycles, yields the complete image the user needs.

As described above, for a multi-function integrated toner cartridge, or a single-function type toner cartridge, it is necessary to assemble it on the laser printer mainframe before performing the print job. .

1 to 2, a frame structure of a conventional toner cartridge 100 for a laser printer and an image forming cartridge 200 used in conjunction with the toner cartridge 100 is shown.

The toner cartridge 100 is provided with a toner hopper 101 for accommodating the toner, and the powder feeding frame 102 for discharging the toner contained in the toner hopper 101 is disposed, and the carbon powder sent from the powder conveying frame 102 is re-applied. The developing roller 103 on the photosensitive drum is described below. The toner hopper 101 is formed by being surrounded by a separate wall, and the powder feeding frame 102 is disposed inside.

A photosensitive drum 201 for forming an electrostatic latent image is disposed on the imaging cartridge 200. The photosensitive drum 201 is fixed to a frame 202 of a slightly rectangular frame. The frame 202 is a basic constituent bracket of the imaging cartridge 200.

After the toner cartridge 100 and the imaging cartridge 200 are assembled into a complete processing cartridge, and then placed in a preset area of the laser printer main body, the printing operation can be performed. When the toner cartridge 100 and the image forming cartridge 200 are assembled into a process cartridge, the four support shafts 104 disposed on the axial sides of the toner cartridge 100 along the axial direction of the developing roller 103 respectively enter the four bayonet 203 of the housing 202. The toner cartridge 100 is formed in a state of being fixed in the imaging cartridge 200. The four support shafts 104 are substantially located at four corners of a rectangular shape, which are respectively distributed at four locations of the toner cartridge 100, that is, the toner cartridge 100 includes the two axial ends of the developing roller 103, and carbon. The toner cartridge 100 is away from the developing roller 103 and is adjacent to the portion of the toner hopper 101.

technical problem

In this configuration, a corresponding bayonet 203 needs to be made on the imaging cartridge 200. The production of the bayonet 203 corresponds to the necessary production process, and the lack of corresponding production equipment and molds will not be able to carry out the operation, resulting in lengthening the production process, increasing the production cost, and the product style is single, and the user's choice surface is narrow.

Technical solution

In view of the problems with the above toner cartridge, it is an object of the invention to provide a toner cartridge for a laser printer. The toner cartridge offers customers a wider range of product types and a significant reduction in production costs.

In order to attain the above object of the present invention, the present invention adopts a toner cartridge for a laser printer having the following features. It includes a developing roller for transferring toner to the photosensitive drum in the image forming cartridge, and a toner hopper for accommodating the toner. A support shaft disposed obliquely above the developing roller in the vertical direction is disposed on both sides of the toner cartridge along the axial direction of the developing roller. The toner cartridge extends along the axial direction of the developing roller and away from the two walls of the developing roller, respectively, in a direction away from and perpendicular to the developing roller. The support leg is a support state in which the toner cartridge is assembled to the imaging cartridge to provide support on the tail beam of the imaging cartridge. The tail beam is located on the imaging cartridge away from the photosensitive drum.

Beneficial effect

The toner cartridge for a laser printer of the present invention is designed such that both walls in the axial direction of the developing roller and away from the developing roller are respectively extended with a supporting leg in a direction away from and perpendicular to the developing roller. In this configuration, the support legs can provide a support state for the toner cartridge to be assembled into the imaging cartridge to support the beam on the tail of the imaging cartridge. In this way, not only the product structure is simplified, part of the production equipment is eliminated, the production cost is reduced, and the user is provided with an alternative product form.

DRAWINGS

Figure 1 is a perspective view of a conventional toner cartridge for a laser printer;

Figure 2 is a perspective view of an imaging cartridge for a conventional laser printer;

Figure 3 is a perspective view of a toner cartridge for a laser printer of the present invention.

Embodiments of the invention

The toner cartridge for a laser printer of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to Figure 3, there is shown a perspective view of a toner cartridge for a laser printer of the present invention.

On the toner cartridge 300, a toner hopper 301 for accommodating toner, a powder feeding frame 302 for discharging the toner contained in the toner hopper 301, and a toner powder sent from the powder feeding frame 302 are disposed. The developing roller 303 is further applied to the photosensitive drum 201 as a member of the image forming cartridge 200. The toner hopper 301 is formed by being surrounded by a separate wall, and the powder feeding frame 302 is disposed inside. The toner cartridge 300 extends along the axial direction of the developing roller 303 and away from the walls of the developing roller 303, respectively, in a direction away from and perpendicular to the developing roller 303, and a support leg 304 is respectively extended. The toner cartridge 300 is provided with a support shaft 305 which is located obliquely above the developing roller 303 in the vertical direction on both sides in the axial direction of the developing roller 303.

Referring to FIG. 2, after the toner cartridge 300 and the imaging cartridge 200 are assembled into a complete processing cartridge, they can be placed in a preset area of the laser printer main body to perform a printing operation.

When the toner cartridge 300 and the image forming cartridge 200 are assembled into a process cartridge, the support cartridges 305 disposed on the both sides of the toner cartridge 300 along the axial direction of the developing roller 303 in the vertical direction and obliquely above the developing roller 303 are respectively entered. Among the two corresponding bayonet 203 of the frame 202, the support legs 304 respectively formed by the toner cartridge 300 along the axial direction of the developing roller 303 and away from the walls of the developing roller 303 are supported at the tail of the frame 202 of the imaging cartridge 200. On the beam 205, the toner cartridge 300 is formed in a state of being relatively fixed to the inside of the image forming cartridge 200. The tail beam 205 is located on a portion of the imaging cartridge 200 that is away from the photosensitive drum 201. In a state where the toner cartridge 300 is assembled to the image forming cartridge 200, the developing roller 303 on the toner cartridge 300 and the photosensitive drum 201 on the image forming cartridge 200 are kept axially parallel to each other, and the adjacent circumferential surfaces of the toner cartridge 300 The state is between preset small gaps.

Industrial applicability

The present invention is designed such that both walls in the axial direction of the developing roller and away from the developing roller are respectively extended with a supporting leg in a direction away from and perpendicular to the developing roller. In this configuration, the support legs can provide a support state for the toner cartridge to be assembled into the imaging cartridge to support the beam on the tail of the imaging cartridge. It not only simplifies the product structure, but also saves some production equipment, reduces production costs, and provides users with an alternative product form.

Claims

A toner cartridge for a laser printer, comprising a developing roller for transferring toner to a photosensitive drum in an image forming cartridge, a toner cartridge for accommodating toner, two of the toner cartridges in the axial direction of the developing roller The side is respectively provided with a support shaft located obliquely above the developing roller in a vertical direction;

It is characterized by:

The toner cartridge extends along the axial direction of the developing roller and away from the two walls of the developing roller, respectively, in a direction away from and perpendicular to the developing roller, and the supporting leg is the toner A cartridge is assembled into the imaging cartridge to provide a support state supported on a tail beam of the imaging cartridge, the trailing beam being located at a location on the imaging cartridge remote from the photosensitive drum.