Image forming apparatus configured to perform exposure control and exposure method

Patent metadata

Field	Value
Publication number	US-9199481-B2
Application number	US-201213569459-A
Country	US
Kind code	B2
Filing date	Aug 8, 2012
Priority date	Aug 11, 2011
Publication date	Dec 1, 2015
Grant date	Dec 1, 2015

Abstract

The data conversion unit of an image forming apparatus converts input image data into dot image data in which pixel values having gradation information are arranged in a matrix. A storage unit stores optical face tangle error information of each reflecting surface of a rotary polyhedron. An assignment unit assigns a number to each of the plurality of reflecting surfaces, specifies by which of the plurality of reflecting surfaces light emitted for each line of the dot image data is to be reflected and assigns the number of the reflecting surface to each line of the dot image data. A determination unit determines a light emission mode corresponding to the dot image data based on the optical face tangle error information and the number of the reflecting surface. An exposure control unit causes the light source to emit light in accordance with the determined emission mode.

First claim

What is claimed is:

1. An image forming apparatus, comprising:
an image bearing member on the circumferential surface of which an electrostatic latent image is to be formed;
a data conversion unit for converting input image data into dot image data in which pixel values having gradation information are arranged in a matrix;
a light source for emitting light modulated according to the pixel values for each line of the dot image data to form the electrostatic latent image on th…

Assignees

• Yoshida Shingo
• Kyocera Document Solutions Inc

Inventors

• Yoshida Shingo

Classifications

• B41J2/473 Primary

  Operations & Transport · mapped topic

• G03G15/0435 Primary

  Physics · mapped topic

• G03G15/043 Primary

  Physics · mapped topic