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:
Nov. 28, 1995
Filed:
May. 12, 1994
Hironori Taguchi, Tosu, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A developing unit, an image-transfer unit and a fixing unit are located in that order in a vertically long housing from the bottom to the top of the housing, and a ventilation passage different from a sheet conveying passage, is formed having an inlet opening formed in the bottom part of the housing and the outlet opening formed in the top part of the housing and extending by way of the developing unit, the image-transfer unit and the fixing unit. Air in the ventilation passage is warmed up by extra heat from the fixing unit so as to induce an ascending air stream which expels NOx and ozone generated by corona discharge and which cools the fixing unit. With this arrangement, the necessity of a ventilating fan can be eliminated so as to miniaturize the electrophotographic printing apparatus and to reduce the cost while eliminating noise caused by a ventilating fan.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile