Title:
EXPOSURE HEAD AND IMAGE FORMING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/130695
Kind Code:
A1
Abstract:
This exposure head for exposing a photoconductive drum comprises: a substrate; a plurality of strip-shaped semiconductor chips that are provided with a plurality of light-emitting elements for emitting light and a drive circuit for driving the light-emitting elements and that are arrayed on the substrate; and a lens array that concentrates light from the light-emitting elements onto the photoconductive drum. The drive circuit operates at between a first electric potential and a second electric potential, the light-emitting elements operate at between a third electric potential and a fourth electric potential, and the potential difference between the third electric potential and the fourth electric potential is equal to or greater than the potential difference between the first electric potential and the second electric potential.
Inventors:
AKAGI DAISUKE (JP)
Application Number:
PCT/JP2021/031200
Publication Date:
June 23, 2022
Filing Date:
August 25, 2021
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
B41J2/447; B41J2/45; G03G13/04; H04N1/036
Foreign References:
| JP2020075437A | 2020-05-21 | |||
| JP2016043518A | 2016-04-04 | |||
| US20150069931A1 | 2015-03-12 | |||
| JP2020120018A | 2020-08-06 | |||
| JP2010040641A | 2010-02-18 | |||
| JP2017094499A | 2017-06-01 | |||
| JP2004306446A | 2004-11-04 | |||
| JP2015112856A | 2015-06-22 | |||
| JP2020210272A |
Attorney, Agent or Firm:
NAKAGAWA INTERNATIONAL PATENT OFFICE (JP)
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