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:
Nov. 30, 1999
Filed:
Nov. 06, 1997
Naoki Enomoto, Susono, JP;
Akihiko Takeuchi, Susono, JP;
Tatsuya Kobayashi, Sohka, JP;
Toshiaki Miyashiro, Shizuoka-ken, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes an image bearing member for bearing a toner image; a movable intermediary transfer belt extended around a plurality of supporting shafts, the intermediary transfer belt includes a core member and elastic layers sandwiching the core member, wherein a toner image on the image bearing member is transferred onto the intermediary transfer belt, and the toner image on the intermediary transfer belt is transferred onto a transfer material; wherein a distance r (mm) between a center of such one of the supporting shafts as has a minimum diameter and a center of the core member, a distance L.sub.1 (mm) between the center of the core member and a surface of the intermediary transfer belt where toner image transfer occurs, a distance L.sub.2 (mm) between a surface Of the core member and the surface of the intermediary transfer belt where the toner image transfer occurs, and a size t (mm) of the core member measured in a direction perpendicular to a movement direction of the intermediary transfer belt, satisfy: