Image forming apparatus with multiple light sources timing control
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United States of America Patent
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Jun 16, 2015
Grant Date -
Jun 19, 2014
app pub date -
Dec 11, 2013
filing date -
Dec 13, 2012
priority date (Note) -
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Abstract
An image forming apparatus includes first and second photosensitive members; first and second light sources; a rotatable polygonal mirror; a first signal output portion; and a second signal output portion. The first light source emits the light at timing on the basis of the first signal, and the second light source emits the light at timing on the basis of the second signal so that latent images are formed on the first and second photosensitive members, respectively, and then are developed with developers to form developer images on the first and second photosensitive members, respectively, and then an image is formed by superposing the developer images. Before output of a second signal from the second signal output portion is started, the first light source emits the light on the basis of a first signal to start formation of the latent image on the first photosensitive member.
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