Optical writing device, image forming apparatus, and method for controlling optical writing device

摘要

An optical writing device forms an electrostatic latent image and includes a pixel-information acquiring unit that acquires pixel information and stores the acquired pixel information in a storage medium with respect to each main scanning line; a tilt correcting unit that generates a tilt correction signal specifying a main scanning line from which the pixel information to be input to a light source is read out from the storage medium in order to correct a tilt of the electrostatic latent image; a position correcting unit that generates a position correction signal specifying a timing to input the pixel information to the light source in order to correct a position of the electrostatic latent image; and a pixel-information-input control unit that controls input of the pixel information from the storage medium to the light source in response to the tilt correction signal and the position correction signal.

主权项

1. An optical writing device that forms an electrostatic latent image on a photoreceptor, the optical writing device comprising:
a pixel-information acquiring unit that
acquires pixel information corresponding to pixels of an image to be formed as the electrostatic latent image, andstores the acquired pixel information in a storage medium with respect to each main scanning line; a tilt correcting unit that generates a tilt correction signal specifying a main scanning line from which the pixel information is read out of the storage medium and inputted to a light source, which exposes the photoreceptor to light, in order to correct a tilt of the electrostatic latent image formed on the photoreceptor; a position correcting unit that generates a position correction signal specifying a timing to input the pixel information to the light source in order to correct a position of the electrostatic latent image formed on the photoreceptor in a sub-scanning direction; and a pixel-information-input control unit that controls input of the pixel information from the storage medium to the light source in response to the tilt correction signal and the position correction signal, wherein the pixel-information-input control unit adjusts input timing of the pixel-information to the light source, by adjusting the input timing of the pixel-information to the storage medium; and the position correction unit adjusts input timing of the pixel-information to the light source, by adjusting the input timing from the storage medium to the light source independently of the input timing of the pixel-information to the storage medium.