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. 10, 2010
Filed:
Feb. 14, 2008
Yuichi Makino, Abiko, JP;
Yuichi Makino, Abiko, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner conveying apparatus comprising: a toner conveying member which discharges toner outside a toner accommodating portion; toner conveying passage which receives toner discharged from the toner accommodating portion; and a screw constituted such that a pitch in its region downstream in the toner conveying direction is wider than a pitch in its region upstream in the toner conveying direction; and a drive device which drives the toner conveying member and the screw; wherein if a toner feeding amount per unit drive time of the toner conveying member is defines as V, and a toner feeding amount per unit drive time in the region of the screw upstream in the toner conveying direction is defined as V, and a toner feeding amount per unit drive time in the region of the screw downstream in the toner conveying direction is defined as V, a relation equation of V≦V<Vis satisfied.