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:
Sep. 22, 2026
Filed:
Jan. 24, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image-forming apparatus includes a rotatable developer-bearing member to bear a developer including a toner particle and a transfer promoting particle attached to the toner particle. When F denotes pressing force for pressing the developer-bearing member against an image-bearing member, and N denotes a number of the transfer promoting particles interposed between the toner particle and the image-bearing member, adhesion strength Ft between the transfer promoting particle and the toner particle measured by pressing the transfer promoting particle against the toner particle at a pressing force per unit transfer promoting particle F/N and adhesion strength Fdr between the transfer promoting particle and the image-bearing member measured by pressing the transfer promoting particle against the image-bearing member at the pressing force per unit transfer promoting particle F/N, satisfy Ft<Fdr, and electrical discharge is generated upstream of a transfer portion in a movement direction of an intermediate transfer belt.