US 2019/0377278 A1Published application

Image forming apparatus

AssigneeCanon Kabushiki Kaisha

InventorYuichiro Maeda

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Abstract

The image forming apparatus includes: a plurality of photosensitive drums arranged with an interval; a light scanning device, which includes a plurality of semiconductor lasers corresponding to the plurality of photosensitive drums on a one-to-one basis, and is configured to form a latent image on the photosensitive drum; an exposure control portion configured to generate a drive signal for causing the semiconductor laser to turn on or off the light based on image data; and a CPU configured to output a parameter for generating the drive signal to the exposure control portion, in which the CPU outputs the parameter to the exposure control portion at a transfer speed that is set so that the outputting of the parameter corresponding to the plurality of semiconductor lasers is completed within a time period calculated from the interval and rotation speeds of the photosensitive drums.

Claims7

Dependent claims

An image forming apparatus of a tandem type, the image forming apparatus comprising:

a plurality of photoconductors arranged with a predetermined interval;
an exposure unit, which includes a plurality of light sources corresponding to the plurality of photoconductors on a one-to-one basis, and is configured to form a latent image on each of the plurality of photoconductors;
a generating unit configured to generate a drive signal for causing each of the plurality of light sources to perform one of turning on of light and turning off of light based on image data;
and
an output unit configured to output a parameter for generating the drive signal to the generating unit,
wherein the output unit is configured to output the parameter to the generating unit at a transfer speed that is set so that the outputting of the parameters corresponding to the plurality of light sources is completed within a time period calculated from the predetermined interval and rotation speeds of the plurality of photoconductors.

3 more elements

Dependencies are inferred from the claim text.