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:
Apr. 17, 1990
Filed:
Mar. 17, 1989
Eugene I Gordon, Summit, NJ (US);
Photon Imaging Corp., Edison, NJ (US);
Abstract
An image scanner utilizes an area CRT while avoiding the low linear resolution limitations of such a device. The CRT is coupled to a noncoherent fiber optic bundle (area array) having a proximal end of a geometry to optically match the scanned area of the face plate. The remote end of the fiber array is linear and coupled to a scan segment of a page to be scanned. The beam of the CRT is directed to the consecutive fibers of the bundle in a sequence imposed by a look-up table containing digital addresses and digital to analog converters to produce the required x-y deflection voltages. Since there need only be 5100 fibers for a 600 line per inch scanner and the spot resolution of the CRT need only be in excess of 5100 positions, the resolution is easily obtained. For example, 5100 spots implies a linear resolution of 72 elements in a scan line. The decay time of the phosphor is chosen to be short enough that only one fiber is illuminated at any instant. A single output photodetector is used for monochrome and a three output photodetector is used for color.