Image forming device and image position adjustment method

By forming multiple straight -line correction patterns on the carrier of the image forming device, and using the sensor detection result, adjusting the position of the main scanning direction to solve the problem of calculation error of the vertex position of the vertex of the secondary scanning rate, and achieved it. Accurate image position adjustment.

CN112445093BActive Publication Date: 2025-01-28TOSHIBA TEC KK
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Patent Information

Application Number
CN202010627266.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2019-08-27
Filing Date
2020-07-02
Publication Date
2025-01-28
Estimated Expiration
2040-07-02

AI Technical Summary

Technical Problem

The prior art cannot effectively process the change in the sub-scan magnification when adjusting the main scanning direction of the image forming device, resulting in errors in vertex position calculation, and in some cases the vertex of the correction pattern cannot be detected.

Method used

The correction pattern composed of multiple straight lines on the carrier is used to detect the pattern through the sensor, and the position of the main scanning square is adjusted by the control department based on the detection results.

Benefits of technology

In the case of changes in the secondary scanning rate, accurately adjust the writing position on the main scanning direction, avoid the calculation error of the vertex position, and ensure the detection reliability of the correction pattern.

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Abstract

An image forming device and an image position adjustment method. The image forming device of the embodiment comprises an image forming unit, a sensor, and a control unit. The image forming unit forms a pattern consisting of a plurality of intersecting straight lines on a sheet or a transfer belt. The sensor detects the pattern formed on the sheet or the transfer belt. The control unit adjusts the writing position in the main scanning direction based on the pattern detected by the sensor.
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Citation Information

Patent Citations

  • Image forming device and correction method

    CN106980248A

  • Image forming apparatus

    CN108732881A