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. 23, 1986
Filed:
Dec. 22, 1983
Akinori Kimura, Kanagawa, JP;
Shuichi Ohtsuka, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A developing head in which liquid developer and gas are applied by a feeding system to the photosensitive surface of an electrophotographic material for electrophotographic apparatus via a developing chamber, a space being formed between the framed opening of the developing mask at its outer peripheral surface and an opposing photosensitive surface to prevent leakage of the liquid developer by capillarity between the photosensitive surface and the framed opening of the developing mask at its mouth abutting the photosensitive surface, a valve interposed between the passageways for feeding liquid developer and gas respectively in order to prevent the liquid developer from flowing into the passageway for supplying gas, and a pressure reduction apparatus to apply negative pressure between the photosensitive surface and the mouth of the framed opening when the electrophotographic material is advanced from one frame to another.