WO2011160555A1

WO2011160555A1 - Carbon powder cartridge for laser printer

Info

Publication number: WO2011160555A1
Application number: PCT/CN2011/075741
Authority: WO
Inventors: 吴鸣; 卢艳
Original assignee: 珠海天威飞马打印耗材有限公司
Priority date: 2010-06-22
Filing date: 2011-06-14
Publication date: 2011-12-29
Also published as: CN201780456U

Abstract

A carbon powder cartridge (a) for the laser printer comprises a developing roller (105), a powder supply roller (111) for transferring the carbon powder, a layer-thickness regulator for regulating the thickness of the carbon powder layer on the surface of the developing roller (105), an agitator for maintaining the carbon powder fluffy and transferring the carbon powder, and a carbon powder bin (112) for storing the carbon powder. The carbon powder (112) in the carbon powder bin (112) is delivered to the surface of a photosensitive drum (101) by the developing roller (105). The carbon powder cartridge (a) further comprises a temperature sensor, a humidity sensor, and a display device.

Description

Toner cartridge for laser printer

Technical field

The present invention relates to a toner cartridge for a laser printer, which comprises a developing roller, a powder feeding roller, a powder discharging knife, a powder feeding frame and a toner hopper, and the toner contained in the toner hopper is arranged by a developing roller according to a preset layout. The electrostatic latent image area carried on the surface of the photosensitive drum is applied 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 Jun. 22, 2010, and the application number is 201020231987.5, the content of which is incorporated herein by reference.

Background technique

Referring to Figure 1, Figure 1 is a schematic illustration of the basic imaging process of a laser printer toner cartridge. The surface of the photosensitive drum 101 is uniformly charged by the charging roller 102. The laser scanner 103 emits a modulated laser beam 104 containing image information to the photosensitive drum 101. After the laser beam 104 is irradiated, a static voltage map having a different distribution, that is, an electrostatic latent image corresponding to the image to be copied, is formed on the surface of the photosensitive drum 101. . Thereafter, the toner 106 from the developing roller 105 is transferred to the surface of the photosensitive drum 101, and the electrostatic latent image is covered to be converted into a visible image which can be visually observed. The process of converting the electrostatic latent image into a visible image is the development process. As the photosensitive drum 101 rotates, the visible image formed by the toner 106 on the surface of the photosensitive drum 101 is displaced to the position where the transfer roller 107 is located. The toner in the form of a visible image is transferred onto the surface of the recording medium 108 such as paper by the action of the transfer voltage carried by the transfer roller 107, and then passed through a heating roller (not shown) and a pressure roller ( When the visible image on the recording medium 108 is heated and pressurized, the carbon powder is infiltrated into the fiber layer of the recording medium 108, and the visible image formed by the carbon powder is permanently solidified on the recording medium 108. . This completes a basic imaging workflow. The process repeats the cycle and the desired image is obtained.

The aforementioned imaging process usually only obtains a tiny portion of the desired image, and to obtain all of the desired image, it is necessary to operate the aforementioned imaging process repeatedly. In the operation mode in which the above-described image forming process is repeatedly operated, it is necessary to keep the working surface of the photosensitive drum 101 always in the standby state. However, after the toner in the form of a visible image is transferred onto the surface of the recording medium 108 by the transfer roller 107, a part of the residual toner 109 is still attached to the working surface on which the photosensitive drum 101 has undergone the image forming process. The working surface that has undergone the imaging process still needs to participate in the next imaging process, and therefore, the residual toner 109 attached to the photosensitive drum 101 must be removed to obtain a clean image before the working surface that has undergone the imaging process enters the next imaging process. status. The waste toner blade 110 assumes the role of removing the residual toner 109 by the scratching method in contact with the working surface of the photosensitive drum 101.

technical problem

As described above, in a toner cartridge, toner is the only material carrier that forms an image. The physicochemical properties of the toner should be stable until it participates in the development process. However, as a consumable item, toner has a high sensitivity to temperature and humidity. When the humidity is relatively large, the toner is easily damp and agglomerated, so that undesired defects such as bottom ash or floating powder are generated during printing. When the temperature is high and even exceeds the melting point of the toner, the toner will agglomerate. Therefore, the production of toner cartridges, especially the filling process of toner, is subject to strict temperature and humidity restrictions, and qualified products are sealed and stored.

The optimal operating temperature of the toner cartridge is 15 to 32 ° C and the relative humidity is 30 to 80%. When working outside the specified temperature and humidity range, it usually causes print quality problems and permanent damage to certain consumable parts of the toner cartridge. Even if the temperature and humidity return to the specified level, the defects of these parts cannot be repaired.

The common working environment can meet the requirements of the toner cartridge, but in the case of environmental change, when the toner cartridge is transferred from the storage environment, such as the warehouse, to the working environment, or to different working environments, and immediately start When printing, the temperature and humidity of the toner cartridge are difficult to adapt to changes in the temperature and humidity of the working environment, resulting in a higher rate of print quality defects.

Technical solution

In view of the incompatibility caused by the above-described environmental change to the toner cartridge, an object of the present invention is to provide a toner cartridge for a laser printer. When the ambient temperature and humidity do not meet the predetermined working range, the toner cartridge can immediately alert the user to the risk of printing quality, and even limit the laser printer to enter the working state, preventing print quality defects and unnecessary waste.

In order to attain the above object, the present invention utilizes a toner cartridge for a laser printer having the following configuration, which includes a developing roller, a powder feeding roller for conveying toner, and a powder for adjusting the thickness of the toner layer on the surface of the developing roller. A knife, a powder feeder for keeping the toner fluffy and conveying toner, and a toner cartridge for storing toner. The developing roller applies the toner contained in the toner hopper to the surface of the photosensitive drum. The toner cartridge also includes a temperature sensing and display device.

The aforementioned toner cartridge for a laser printer maintains an electrical connection between the temperature sensing and display device and the central processing unit of the laser printer.

The aforementioned toner cartridge for a laser printer further includes a humidity sensing and display device.

The aforementioned toner cartridge for a laser printer maintains an electrical connection between the humidity sensing and display device and the central processing unit of the laser printer.

Beneficial effect

The toner cartridge for laser printer of the invention adjusts the temperature and humidity to the toner cartridge according to the environment change, and adopts the method of adding temperature and humidity sensing and display device to promptly remind the user of the temperature and humidity inside and outside the toner cartridge. When the conditions are not matched, the toner cartridge should be prevented from entering the working state, so as to avoid unnecessary print quality defects; in order to more effectively avoid the defects of print quality caused by temperature and humidity changes, the temperature and humidity are sensed. And the temperature and humidity information acquired by the display device is transmitted to the central processing unit of the laser printer as an information parameter for controlling the working state of the laser printer, so as to limit the laser printer to enter the working state when the temperature and humidity conditions of the toner cartridge are mismatched, and the efficiency can be improved. Higher prevention of print quality defects and unnecessary waste.

DRAWINGS

Figure 1 is a schematic view showing the imaging process of a conventional laser printer toner cartridge;

Figure 2 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 Fig. 2, there is shown a perspective view of an embodiment of a toner cartridge for a laser printer of the present invention.

1, the main constituent portion of the toner cartridge a includes a developing roller 105, a powder feeding roller 111, a powder discharging blade (not shown), a powder feeding frame (not shown), and a toner hopper 112.

The toner hopper 112 is a hollow inner chamber composed of a casing of the toner cartridge a, which supplies the toner cartridge a with a reserve space for the toner.

The powder feeding rack is disposed in the inner cavity of the toner hopper 112. It is interlocked with a laser printer by a gear transmission system (not shown) disposed at one end of the toner cartridge a along the axial direction of the developing roller 105. Under the driving of the laser printer, the rotation of the powder feeding frame holds the toner contained in the toner hopper 112 in a state of a fluffy flowing powder, and is sent to a portion where the developing roller 105 and the powder feeding roller 111 are located.

The axial directions of the developing roller 105, the powder feeding roller 111, and the powder feeding frame are kept parallel to each other in the toner cartridge a. The powder feeding roller 111 further uniformly distributes the toner powder sent from the powder feeding frame to the vicinity of the developing roller 105. The toner disposed in the vicinity of the developing roller 105 is adsorbed to the circumferential surface of the developing roller 105 by magnetic force, and finally the thickness thereof is adjusted by the powder discharging blade, and then carried by the developing roller 105 to the vicinity of the photosensitive drum 101.

On the outer surface of the casing of the toner cartridge a, a temperature and humidity sensing and display device capable of simultaneously sensing and displaying the temperature and humidity around the toner cartridge a is provided. In the present embodiment, the temperature and humidity sensing and display device employs a temperature and humidity control switch 113. The temperature and humidity control switch 113 is electrically connected to the central processing unit of the laser printer via a transmission line (not shown). After the operating threshold range of the temperature and humidity control switch 113 is set, when the temperature and humidity conditions meet the specified requirements, the temperature and humidity control switch 113 is turned on, and the printer is in a standby working state; when the temperature and humidity conditions exceed the standard, the temperature and humidity are exceeded. The control switch 113 is turned off, the printer stops working, and the warning information of temperature and humidity exceeding the standard is displayed.

As another simple embodiment of the toner cartridge for a laser printer of the present invention, the temperature and humidity sensing ink 113 can be used instead of the temperature and humidity control switch 113. In this embodiment, the color of the temperature and humidity sensing ink changes depending on the ambient temperature, and the user can confirm whether the toner cartridge is in a normal standby state according to the state of the color of the temperature and humidity sensing ink.

Industrial applicability

The invention aims at the problem of temperature and humidity adaptation brought by the environment change to the toner cartridge, and adopts the method of adding temperature and humidity sensing and display device to promptly remind the user that the temperature and humidity conditions of the toner cartridge are not matched. Avoid putting the toner cartridge into working condition to avoid unnecessary print quality defects; to more effectively avoid the defects of print quality defects caused by temperature and humidity changes, the temperature and humidity sensing and the temperature acquired by the display device The humidity information is transmitted to the central processing unit of the laser printer as an information parameter for controlling its working state, so as to limit the laser printer from entering the working state when the temperature and humidity conditions of the toner cartridge are mismatched, the printing quality defect can be prevented more effectively. And cause unnecessary waste.

Claims

Toner cartridge for laser printers, including

a developing roller, a powder feeding roller for conveying toner, a powder discharging knife for adjusting the thickness of the toner layer on the surface of the developing roller, a powder feeding frame for keeping the toner fluffy and conveying the carbon powder, and a toner powder for storing a toner cartridge, the developing roller applies the carbon powder contained in the toner cartridge to the surface of the photosensitive drum;

It is characterized by:

Also included are temperature sensing and display devices.
A toner cartridge for a laser printer according to claim 1, wherein:

The temperature sensing and display device maintains an electrical connection with a central processor of the laser printer.
A toner cartridge for a laser printer according to claim 1 or 2, wherein:

It also includes humidity sensing and display devices.
A toner cartridge for a laser printer according to claim 3, wherein:

The humidity sensing and display device maintains an electrical connection with a central processing unit of the laser printer.