A laser printer selenium drum

By incorporating a side cover and a pressure elastic element within the toner cartridge, the amount of contact between the photosensitive drum and the developing roller can be flexibly adjusted and precisely controlled. This solves the problem of non-adjustable contact in existing toner cartridge structures, reduces costs and assembly difficulty, and improves print quality and stability.

CN224366311UActive Publication Date: 2026-06-16Tianjin Guangdiantong Electronic Technology Co., Ltd.
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Tianjin Guangdiantong Electronic Technology Co., Ltd.
Filing Date
2025-08-21
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

In the existing toner cartridge structure, the contact amount between the photosensitive drum and the developing roller cannot be flexibly adjusted, resulting in unstable print quality, high processing precision requirements, increased mold and production costs, high assembly difficulty, and inconsistent imaging states.

⚗Method used

By setting side covers at both ends of the toner hopper assembly and hinged them to the waste toner hopper assembly, the amount of contact between the photosensitive drum and the developing roller is adjusted using pressure elastic elements. Combined with the pressure settings of the pressure elastic elements in different parts, precise control and automatic compensation of the contact amount can be achieved.

🎯Benefits of technology

It reduces the cost and difficulty of developing and debugging toner cartridges, lowers the requirements for processing precision, ensures consistent printing quality, and improves assembly convenience and printing stability.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224366311U_ABST
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Abstract

The utility model provides a kind of laser printer selenium drum, including waste powder bin assembly, powder bin assembly and side cover;Waste powder bin assembly includes waste powder bin and the photosensitive drum being set to the front end of waste powder bin, waste powder bin includes the end plate being arranged in its length direction both ends, photosensitive drum is connected to end plate;Side cover is detachably connected to the both ends of powder bin assembly, and powder bin assembly includes powder bin and the developing roller being set to the front end of powder bin;The bottom end middle part of end plate is hinged with the top end middle part of side cover;Waste powder bin is connected by the pressure elastic member with the one end of powder bin assembly far from developing roller, far from photosensitive drum.The utility model makes the contact amount of photosensitive drum and developing roller can be adjusted according to requirement, reduces the manufacturing cost and debugging difficulty of selenium drum;By setting the pressure of pressure elastic member to different size, so that the imaging state of selenium drum both ends is consistent;Overall structure design is ingenious, convenient to operate, control is accurate, is convenient for to assemble and disassemble, improves the stability of printing job.
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