Image forming apparatus and position correcting method
Number of patents in Portfolio can not be more than 2000
United States of America
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Feb 25, 2020
Grant Date -
Jul 11, 2019
app pub date -
Aug 22, 2018
filing date -
Aug 22, 2018
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An image forming apparatus of an embodiment comprises a printer unit to print a sheet with a plurality of single colors and generate a correction sheet including a plurality of single color regions at different positions between a first reference region and a second reference region. The first and second reference regions are a reference color. An image reading unit is configured to read the correction sheet. A processor is configured to calculate a shift amount in a main scanning direction of the printer unit for each single color region based on RGB luminance values obtained from the correction sheet by the image reading unit and to correct a printer scan position along the main scanning direction for each single color in the plurality of single colors corresponding to the single color regions using calculated shift amounts.
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