Image forming apparatus having plural image processing speeds and plural image correction characteristics
AssigneeCanon Kabushiki Kaisha
InventorsYuichiro Toyohara, Kenichiro Kitajima
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Abstract
An image forming apparatus includes an LED array for performing exposure according to an input image signal, a photoconductive drum on which an electrostatic latent image is formed by exposure with the LED array, a developing device for making the electrostatic image visible, a transfer charger for transferring the visible image onto a transfer material, and a fixing device for fixing the image on the transfer material. When the operating speed in an image forming process equals the image forming speed, and the image forming speed can be switched among a plurality of levels, the image forming condition is changed in accordance with the image forming speed.
Claims16
An image forming apparatus comprising:
- an image bearing member;
- image forming means for forming an electrostatic image on said image bearing member in accordance with an image signal;
- developing means for developing an electrostatic image formed on said image bearing member;
- transfer means for transferring a developed image on said image bearing member onto a transfer material;
- speed setting means for selectively setting a moving speed of said image bearing member;
- and
- gamma characteristic selection means for selecting a gamma conversion characteristic relationship between the image signal and an output density in accordance with the moving speed of said image bearing member set by said speed setting means.
An image forming apparatus comprising:
- an image bearing member;
- an image forming device for forming an electrostatic image on said image bearing member in accordance with an image signal;
- a developing device for developing an electrostatic image formed on said image bearing member;
- a transfer charger for transferring a developed image on said image bearing member onto a transfer material;
- a speed setting device for selectively setting a moving speed of said image bearing member;
- and
- an image signal processor that selects a gamma conversion characteristic relationship between the image signal and an output density in accordance with the moving speed of said image bearing member set by said speed setting device.
Dependencies are inferred from the claim text.