Pixel position specifying method, method of correcting image offset, and image forming device

A technology of pixel position and specific method, which is applied in the direction of printing equipment, image communication, photolithography process exposure equipment, etc., can solve the problems of image quality reduction, difficulty in applying multi-head exposure equipment, etc., and achieve the effect of preventing offset or overlapping
CN1573414AInactive Publication Date: 2005-02-02FUJIFILM CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUJIFILM CORP
Publication Date
2005-02-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a pixel positioning method, an image shift correction method and an imaging device, which comprises following steps: opening a first connecting pixel near a connecting joint of a first exposure head; moving a beam position detector along a Y axis; detecting a first exposure beam position in XY coordinate on the light receiving side; opening a second connecting pixel near a connecting joint of a second exposure head; moving the beam position detector along the Y axis; detecting the exposure beam position in XY coordinate on the light receiving side; positioning the first pixel and second pixel according to the motion quantity of the beam position detector along the Y axis and the exposure beam positions of the first exposure head and the second exposure head on the light receiving side. The pixel positioning method and image shift correction method as well as the imaging device has the advantages of reducing shift among the images formed by the exposure heads in the multi-head exposure devices.
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Description

technical field

[0001] The present invention relates to a pixel position specifying method, an image offset correction method, and an image forming apparatus. In particular, in an image forming apparatus equipped with a plurality of exposure heads, even if the relative position between the exposure heads changes, the pixel position identification method can identify the positions of connected pixels in the exposure heads with high precision, and can form a connection point that is not conspicuous. An image shift correction method for a high-quality image, and an image forming apparatus for correcting image shift between exposure heads using the image shift correction method. Background technique

[0002] Over the years, as an example of an image recording device, various exposure devices that use a spatial light modulation element (SLM) such as a digital micromirror device (DMD) to perform image exposure with a light beam modulated according to image data have been proposed....

Claims

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