Processing box

Abstract

The invention provides a processing box comprising a casing, wherein the casing is provided with a carbon powder cabin for accommodating carbon powder; a photosensitive drum, a charging roller for supplying power to the photosensitive drum, a developing roller for delivering the carbon powder to the photosensitive drum, a powder delivery roller for delivering the carbon powder to the developing roller, and a doctor blade for adjusting the thickness of carbon powder layers on the developing roller, wherein one end of the charging roller is connected with a conducting member, and the conducting member and the powder delivery roller are connected by a voltage reducer. An applicable voltage reducer can be selected according to the characteristics of the carbon powder loaded in the processing box and the powder delivery roller, polarity carbon powder with positive electricity is effectively neutralized and eliminated, and the powder delivery roller is ensured to form enough electric field force so that words and figures formed on paper are black enough and the print quality is improved.

Description

technical field [0001] The invention relates to a printing consumable, especially a processing box for a laser printer. Background technique [0002] Laser printers are common printing devices that provide great convenience for modern offices. Existing laser printers mostly use a process box detachably installed in the laser printer to provide toner for printing. During the printing process, the toner loaded in the process box is transferred on the paper as the printing medium to form the pattern and text. [0003] Existing one class processing box has the toner storehouse that holds carbon powder and the waste toner storehouse that holds waste carbon powder, and the structure of this type process box is as follows: figure 1 shown. [0004] see figure 1 , The process box has a shell 1, and the shell 1 is provided with a handle 15, which is convenient for the user to grasp. [0005] see figure 2 , The housing 1 of the process cartridge is composed of a drum frame 11, a...

AI Technical Summary

Problems solved by technology

[0021] However, the voltage value loaded by the laser printer on the powder feeding roller is fixed, which often causes the voltage loaded on the powder feeding roller to be too low, resulting in insufficient electric field force of the toner in the electric field, or unable to neutralize the positively charged polar toner

If the electric field force of the electric field where the carbon powder is located is insufficient, the carbon powder cannot be transferred to the surface of the photosensitive drum 36, resulting in insufficient blackness of the printed characters or patterns.

If the positively charged polar carbon powder cannot be eliminated or neutralized, the positive polar carbon powder will be adsorbed on the unexposed area of ​​the photosensitive drum 36, resulting in the formation of gray spots in areas that should not form characters or patterns, affecting printing quality

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