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:
May. 20, 2003
Filed:
Nov. 15, 2001
Applicant:
Inventors:
Naotaka Funayama, Tenri, JP;
Jun Yamaguchi, Ikoma, JP;
Yoshiaki Sanada, Ikoma, JP;
Tsutomu Nagata, Hirakata, JP;
Takahiko Kimura, Ikoma, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 2/100 ;
U.S. Cl.
CPC ...
G03G 2/100 ;
Abstract
A toner cartridge includes: a toner storage chamber; a toner collecting chamber; a partitioning wall for separating these chambers; a cylindrical return pipe penetrating through the partitioning wall with a conveyer screw arranged therein and is configured so that when the amount of untransferred toner collected into the toner collecting chamber exceeds the height of the return pipe, the untransferred toner is conveyed by the rotation of the conveyer screw to be returned into the toner storage chamber.