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. 08, 1987
Filed:
Mar. 14, 1986
Pierre Genequand, Geneva, CH;
Fondation Suisse pour la Recherche en Microtechnique, Neuchatel, CH;
Abstract
A process for electrophotographic matrix printing and apparatus for carrying out this process, the apparatus comprising a plane assembly of modulating strips disposed alternately along two parallel lines, an optical light guide for guiding the light emitted by a virtual pinpoint light source in the form of two convergent light sheets respectively traversing the two lines of modulators, and a rotary drum whose lateral surface consists of a photosensitive support. The optical light guide is formed of a plate with plane parallel surfaces, bounded by three rims. The first rim has a toroidal form whose center corresponds to the position of the source; the second rim has a cylindro-parabolic form and the third rim comprises a dihedron whose edge is parallel to the plane faces of the guide. Writing can be effected line by line along a direction substantially parallel to the axis of rotation of the photosensitive support.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile