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:
Mar. 25, 1986
Filed:
Nov. 18, 1983
Edward F Mayer, San Jose, CA (US);
Donald F Pfeuffer, San Jose, CA (US);
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A particle cleaning blade is mounted to cause the edge of the cleaning blade to describe an arc having both radial and axial components relative to the drum surface so that at its lowest point the blade comes into contact with the surface of the photoconductive drum. The mounting incorporates sufficient mechanical tolerances in the mechanical components to cause the final position of the blade relative to the surface of the drum to shift slightly from one wiping sequence to the next; any defects in the blade are shifted laterally across the drum. The mounting is a parallelogram type arrangement, which is spring-biased to hold the blade in a position removed from the surface of the drum by rotating the sides away from the vertical. A solenoid actuator is provided, located laterally with respect to the parallelogram and near one upright side. When the solenoid is actuated, it overcomes the biasing spring force, and draws the arms upright by overcoming the spring biasing force. The mounting which supports the parallelogram ideally also incorporates a scraper blade made of a flexible sheet of material held against the side of the cleaner blade.