The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 14, 2021

Filed:

Sep. 18, 2020
Applicant:

Toshiba Tec Kabushiki Kaisha, Tokyo, JP;

Inventor:

Motoshi Ueda, Sunto Shizuoka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/04 (2006.01); G03G 15/00 (2006.01); H05B 45/00 (2020.01);
U.S. Cl.
CPC ...
G03G 15/04054 (2013.01); G03G 15/80 (2013.01); H05B 45/60 (2020.01); G03G 2215/0409 (2013.01);
Abstract

An exposure head includes a light emitter, a plurality of switches, a transmission line, and a plurality of delay circuits. In the light emitter, a plurality of light emitting elements are arranged in a first direction. The switches are provided respectively corresponding to the light emitting elements. The switches are configured to perform switching such that, when a drive signal is input, a drive current flows through a light emitting element corresponding to the drive signal. The transmission line is configured to supply a drive signal to the switches. The delay circuits are provided respectively corresponding to the switches. The delay circuits are configured to delay the drive signal that is supplied to the switches through the transmission line in order from a first end side to a second end side of the light emitting elements arranged in the first direction.


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