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:
Jul. 17, 2018
Filed:
Sep. 01, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Wataru Endo, Tokyo, JP;
Hiroyuki Nakamura, Atsugi, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A printing apparatus comprising a light-emitting element, a light-receiving element configured to output a monitor current based on a light-emitting amount from the light-emitting element, a comparison unit connected to the light-receiving element and configured to compare the monitor current with a reference current, a driving unit configured to drive the light-emitting element based on the comparison result, a current generation unit configured to generate a first current, and a conversion unit arranged in a path between the current generation unit and the comparison unit, the conversion unit outputting, upon receiving a control signal, the reference current based on the control signal and the first current.