Image forming apparatus having a density sensor movable in a main scanning direction

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United States of America Patent

PATENT NO 9921533
SERIAL NO

15237006

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An image forming apparatus includes a photoconductor, an optical scanner, a development device, a movable density sensor, a density sensor driver, and a processor. The optical scanner includes a light source to emit light, and irradiates a surface of the photoconductor in a main scanning direction with the light to form a latent image on the surface of the photoconductor. The development device develops the latent image into a toner image. The density sensor detects unevenness in density of the toner image in the main scanning direction. The density sensor driver moves the density sensor in the main scanning direction. The processor corrects a driving signal for the light source according to image data to reduce the unevenness in density in the main scanning direction, according to positional data of the density sensor in the main scanning direction and an output value of the density sensor.

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Patent Owner(s)

Patent OwnerAddress
RICOH COMPANY LTDTOKYO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kato, Shinji Kanagawa, JP 237 2466
Kumagai, Masaru Kanagawa, JP 49 120
Mori, Atsushi Tokyo, JP 174 1313

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