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:
Aug. 31, 2004
Filed:
Aug. 12, 2002
Kazuyoshi Kondoh, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus of the present invention includes an image transferring device for transferring a toner image from an image carrier to a recording medium and a moving device for selectively moving the image transferring device toward or away from the image carrier. The moving device moves the image transferring device toward the image carrier on the elapse of at least a period of time necessary for the image carrier to rotate from a rotation start position to a reversely rotated position. Assume that a distance between a position where the image transferring device approaches the image carrier and a position where the toner image starts being formed on the image carrier is a, that the image carrier is reversely rotated by a distance of b, that the linear velocity of the image carrier is V, and that a period of time between the start of rotation of the image carrier and image formation is c, then a period of time t necessary for the image transferring device approaches the image carrier after the start of rotation of the image carrier is satisfies a relation of (a+b)/V<t<c.