Image forming device and color misregistration correction method for image forming device
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United States of America Patent
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Jul 3, 2007
Grant Date -
Mar 3, 2005
app pub date -
Aug 25, 2004
filing date -
Aug 26, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An image forming device and a color misregistration correction method allow for stable formation of excellent images with little color misregistration. A reference patch image is formed on a reference photosensitive drum 3, and transferred to a transfer belt 7. A correction patch image is formed on a correction-target photosensitive drum 3, and transferred onto the reference patch image by superimposition. A registration detecting sensor 21 detects a density average value of the reference patch image and the correction patch image. Based on the density average value, a correction value for controlling the correction-target photosensitive drum 3 is calculated, and rotational phase control is performed in accordance with the correction value.
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