Developing cartridge

The developing cartridge addresses complex assembly issues by using a detachable design with a pushing assembly to maintain the distance between the photosensitive drum and transfer roller, ensuring high printing quality.

WO2026148694A1PCT designated stage Publication Date: 2026-07-16ZHUHAI ORITONE INFOTECH CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ZHUHAI ORITONE INFOTECH CO LTD
Filing Date
2025-02-10
Publication Date
2026-07-16

AI Technical Summary

Technical Problem

Existing developing cartridges have complex structures that compromise printing quality due to changes in the distance between the photosensitive drum and transfer roller during installation, and they are difficult to assemble.

Method used

A developing cartridge with a detachable design and a pushing assembly that includes a movable member and elastic member, allowing the rear end to rotate around the developing roller to avoid protrusions, ensuring the chip holder contacts the electric contact without altering the distance between the photosensitive drum and transfer roller.

Benefits of technology

Ensures high printing quality by maintaining a consistent distance between the photosensitive drum and transfer roller, simplifying the assembly process with a straightforward structure.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN2025076585_16072026_PF_FP_ABST
    Figure CN2025076585_16072026_PF_FP_ABST
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Abstract

The present invention relates to a developing cartridge comprising a developing casing with a front end and a rear end in an installation direction of the developing cartridge, a developing roller detachably mounting in the developing casing, and a chip holder for supporting a chip. The developing cartridge further comprises a pushing assembly mounted on a bottom side of the developing casing. The pushing assembly is closer to the rear end of the developing casing relative to the front end of the developing casing. When the developing cartridge is installed into the drum cartridge, the pushing assembly can touch the drum casing and make the rear end of the developing casing move in a direction far from the drum casing. The developing cartridge of the present invention has a simple structure in the case of assuring a high printing quality.
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