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:
Apr. 17, 2018
Filed:
Jun. 28, 2017
Kyocera Document Solutions Inc., Osaka, JP;
Masaru Watanabe, Osaka, JP;
Abstract
A density correction unit (a) obtains density measurement values of a surface in a measurement section of an image carrier at a first round, (a) calculates as section background data at the first round respective differences between the density measurement values at the first round and an average value thereof, (a) obtains density measurement values of a surface at least in the measurement section at a second round, (a) calculates as section background data at the second round respective differences between the density measurement values at the second round and an average value thereof in a specific section with the same length as the measurement section, and (a) determines the rotation period on the basis of a correlation between the section background data at the first round and at the second round. Here the measurement section is a part in a circulating direction of the image carrier.