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.
Patent No.:
Date of Patent:
Oct. 11, 2016
Filed:
Jul. 16, 2015
Konica Minolta, Inc., Chiyoda-ku, Tokyo, JP;
Makoto Obayashi, Toyokawa, JP;
Satoshi Masuda, Neyagawa, JP;
Yoshikazu Watanabe, Toyohashi, JP;
Masayuki Iijima, Okazaki, JP;
So Yano, Ibaraki, JP;
Takaki Uemura, Seto, JP;
KONICA MINOLTA, INC., Chiyoda-Ku, Tokyo, JP;
Abstract
An optical print head includes: light-emitting elements in line shape; first power line supplying first reference voltage; second power line supplying drive current to each light-emitting element and supplying second reference voltage; DAC outputting first voltage indicating light emission amount of each light-emitting element; first elements for holding first voltage difference between the first reference voltage and the first voltage; second elements each electrically connectable with corresponding first element and for holding second voltage difference between the second reference voltage and second voltage according to the first voltage, and during supply of drive current, controls each first element to hold the first difference by electrically disconnecting the first and second elements, and temporarily suspends supply of the drive current, and controls the second element to hold the second difference by electrically connecting the first and second elements, such that the drive current according to the second voltage difference is supplied.