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:
Mar. 08, 2011
Filed:
Apr. 23, 2009
Hirotsugu Akamatsu, Osaka, JP;
Hirotsugu Akamatsu, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An image forming apparatus including: a first and a second photoconductor groups constituted of one or more photoconductors respectively; a first and a second drive control sections for controlling the drive of the first and second photoconductor groups respectively to rotate the photoconductors thereof, and a deceleration measuring section for measuring respective degrees of deceleration when the first and second photoconductor groups rotate under their own inertias with a drive thereof being stopped, wherein the rotational phases of the first photoconductor group and the second photoconductor group are adjusted to be matched therebetween; and the first and second drive control sections determine a control pattern for decelerating so that a degree of deceleration to be applied at the stage of stopping drive of the first and second photoconductor groups become equal to or slower than the slowest one among the degrees of deceleration being measured.