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:
Feb. 02, 1982
Filed:
Dec. 21, 1979
Hiroaki Ura, Hachioji, JP;
Hiroyuki Honda, Hachioji, JP;
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Abstract
A cleaning apparatus for removable insertion in an electrophotographic copying machine includes an exhaust cylinder having an opening at an end portion thereof and a conveyor in the cylinder operable for carrying particulate developer through the cylinder to the opening thereof. A shutter having a second opening is movable with respect to the cylinder between a first position in which the shutter closes the cylinder opening and a second position in which the openings of the shutter and cylinder are aligned, a bias spring being effective to normally maintain the shutter in its first position. When the apparatus is inserted in a copying machine, the cylinder end portion is inserted into a hopper for receiving particulate developer, causing the shutter to move to its second position in which the openings are aligned to permit movement of developer into the hopper from the exhaust cylinder. Subsequent removal of the cleaning apparatus effects automatic closure of the cylinder opening to prevent leakage of developer therethrough.