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. 23, 2018
Filed:
Aug. 25, 2017
Kyocera Document Solutions Inc., Osaka-shi, Osaka, JP;
Jun Nakai, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka-shi, Osaka, JP;
Abstract
A laser scanning device includes a rotary polygon mirror, a drive motor, a light detecting portion, a measurement processing portion, and an identification processing portion. The rotary polygon mirror has reflection surfaces and rotates such that light is scanned by the reflection surfaces in sequence. The light detecting portion detects the light scanned by the rotary polygon mirror. The measurement processing portion, in each of light detection cycles, measures an interval between a light detection timing and an output timing at which a drive signal that is to be input to a drive motor first after the detection timing, is output. The identification processing portion identifies a reflection surface corresponding to a standard interval, based on the standard interval and the measured interval, the standard interval being one of intervals acquired in the detection cycles that correspond to the reflection surfaces.