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:
Oct. 06, 1987
Filed:
Oct. 03, 1985
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
An electrostatic copying apparatus conveys a copying paper sheet through a copying paper conveying passage thereby to form an image on one surface of the sheet, selectively introduces it into a copying paper returning passage, returns it to a copying paper re-sending device through the returning passage, and again feeds it into the paper conveying passage from the re-sending device so as to form an image on the other surface of the paper sheet. The paper re-sending device includes a copying paper receiving stand for receiving copying paper sheets and a delivery device disposed above the receiving stand. The delivery device is selectively maintained in a non-operating state in which it moves away from the copying paper received on the receiving stand, a first operating state in which it acts relatively weakly on the copying paper received on the receiving stand, and a second operating state at which it acts relatively strongly on the copying paper received on the receiving stand. A mechanism prevents feeding of papers in the superposed state, and a copying paper detecting mechanism, applicable to various types of electrostatic copying apparatus, permits effective detection of the arrival of a copying paper at the paper re-sending device.