Process box

Abstract

The processing box comprises a shell, a photosensitive drum and a developing roller are arranged in the shell, a driving gear is arranged at one end of the photosensitive drum, and a transmission gearmeshed with the driving gear is arranged at one end of the developing roller; and the processing box also comprises an adjustable mounting assembly, the adjustable mounting assembly is used for supporting and mounting the developing roller, is arranged at the end part, provided with the transmission gear, of the developing roller or at the two ends of the developing roller, enables the position of the developing roller to be adjustable, and enables the developing roller to be in contact with the photosensitive drum. According to the invention, the developing roller is mounted through the adjustable mounting assembly; the developing roller always has a trend of being in contact with the photosensitive drum; therefore, when the developing roller inclines relative to the rotating shaft of the photosensitive drum under the action of the reverse force between the developing roller and the photosensitive drum, the adjustable mounting assembly can also compensate the position change of the developing roller, so that the developing roller and the rotating shaft of the photosensitive drum are always kept parallel and in contact, and the printing quality is ensured.

Description

technical field [0001] The present invention relates to a process cartridge used in an image forming apparatus. Background technique [0002] The process box is a box that can be detachably loaded into the main body of the image forming device. As an integral unit, the process box includes a housing, a photosensitive drum, a developing roller, a powder feeding roller, and a cavity for accommodating developer, etc. The photosensitive drum , developing roller and powder feeding roller are all set in the casing. After the process cartridge is installed in the image forming device, it needs to receive the driving force from the image forming device. The driving force receiving part of the process cartridge is generally arranged on one end of the photosensitive drum, and the driving force receiving part cooperates with the driving head of the image forming device to receive The driving force of the image forming device makes the photosensitive drum rotate around its own axis, an...

AI Technical Summary

Problems solved by technology

[0003] During the developing process of the process cartridge, the photosensitive drum and the developing roller need to keep in contact, and during the developing process, the transmission gear arranged at one end of the developing roller receives the driving force from the driving gear arranged at one end of the photosensitive drum, so the photosensitive drum is driving the developing roller When rotating, a reverse force will be generated at the end of the developing roller receiving the driving force, so that the driving end of the developing roller is far away from the photosensitive drum, causing the developing roller to tilt, which will easily cause a gap between the developing roller and the photosensitive drum, causing print quality bad question

At present, the developing roller and the photosensitive drum of the existing products are all fixed on the end of the process box shell, and to ensure the contact between the photosensitive drum and the developing roller, the production accuracy of the process box is very high, which will increase a lot of production costs; Many manufacturers ensure the contact between the photosensitive drum and the developing roller in the process cartridge by increasing the mechanical strength of the process cartridge shell, which also increases a large amount of production costs

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