Image forming apparatus using filters to correct potential distribution on photoreceptor due to spot shape of emitted light
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United States of America Patent
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Jan 31, 2017
Grant Date -
Oct 8, 2015
app pub date -
Apr 7, 2015
filing date -
Apr 8, 2014
priority date (Note) -
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Abstract
The image forming apparatus includes an exposure head. The exposure head includes an organic EL element array and a rod lens array, and forms an image on a photosensitive drum by irradiating light emitted from each organic EL element on the photoreceptor via each rod lens. In the exposure head, light emitting from the organic EL element is controlled by a controller. The controller generates a filter coefficient for correcting a spot shape based on the difference between the spot shape of the light spot on the photosensitive drum and the target spot shape on the photosensitive drum. It is noted that the difference is generated by the deviation between the distance from the organic EL element to the photosensitive drum, and the correct focus position.
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