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. 15, 2003
Filed:
Mar. 08, 2001
Hisashi Sato, Miyagi, JP;
Keiichi Chiba, Miyagi, JP;
Tohoku Ricoh Co., Ltd., Shibata-gun, JP;
Abstract
A synchronous drive arrangement for a printer of the present invention includes a timing belt passed over drive pulleys each being mounted on a particular print drum. The timing belt is made up of two narrow belt parts produced by dividing a single belt. Assuming that the belt parts have n teeth each, one of the belt parts is shifted from the other belt part by one-half of the number of teeth n. The belt parts are so positioned as to cancel each other's eccentricity component during rotation. The arrangement reduces synchronization errors ascribable to the eccentricity of the timing belt while preserving the low-cost configuration of timing belt connection.