Title:
EXPOSURE HEAD AND IMAGE FORMATION DEVICE
Document Type and Number:
Japanese Patent JP2022096967
Kind Code:
A
Abstract:
To form a driving circuit in a semiconductor process of a low withstand voltage while securing a forward voltage of light-emitting elements and reduce the size of chips, in such a configuration that the light-emitting elements and a driving circuit are formed in one chip.SOLUTION: An exposure head 106 includes a printed board 202, a plurality of light-emitting elements 602 for emitting light, and an analog part 801 for driving the light-emitting elements 602, and has a plurality of light-emitting element array chips 400-1 to 400-20 that are arranged on the printed board 202 and have a strip shape, and a rod lens array 203 for condensing the light from the light-emitting elements 602 on a photoreceptor drum 102. The analog part 801 operates between a first potential and a second potential, and the light-emitting elements 602 operate between a third potential and a fourth potential. A potential difference between the third potential and the fourth potential is equal to or larger than a potential difference between the first potential and the second potential.SELECTED DRAWING: Figure 11
Inventors:
AKAGI TAISUKE
Application Number:
JP2020210272A
Publication Date:
June 30, 2022
Filing Date:
December 18, 2020
Export Citation:
Assignee:
CANON KK
International Classes:
B41J2/447; B41J2/45; G03G13/04; H04N1/036
Attorney, Agent or Firm:
Nakagawa International Patent Office