Image forming apparatus with an improved centering image printing capability
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United States of America Patent
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Jun 29, 2021
Grant Date -
Jul 30, 2020
app pub date -
Jan 17, 2020
filing date -
Jan 25, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A control unit determines as a sheet center actual position a center position of a print sheet, and adjusts a center position of the image to be printed on the basis of a difference from the sheet center actual position. Further, the control unit prints a main scale image along a primary scanning direction on one face of a print sheet for a test chart, prints a vernier scale image along the primary scanning direction on the other face of the print sheet, determines a deviation between a reference center position of the print engine and a reference center position of the line sensor on the basis of a scale mark of the main scale image that agrees with a scale mark of the vernier scale image, and moves a center position of the image to be printed so as to reduce the determined deviation.
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