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:
Feb. 09, 1988
Filed:
Sep. 24, 1986
Richard H Tuhro, Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A system for calibrating a raster input scanning device for detecting an image on a preselected surface, including a linear photoelectric sensor array comprising a plurality of discrete photosensitive elements arranged along a first axis, for sensing and generating electrical representations of an image on a surface; a carriage assembly movable along a second axis, transverse to said first axis; and supporting a sensor detectable target image for movement along the second axis. The sensor detectable target image includes an alignment feature for use during alignment operations. A drive system moves the carriage assembly carrying the target image from a starting position along said second axis, and the distance traveled by the carriage assembly from said starting point until the alignment feature on said target image is sensed is measured. A y-axis comparator compares the measured distance with a y-axis reference to determine an y-axis offset value which is stored in a y-axis memory as an y-axis offset value. Magnification and focus calibration are provided in similar fashion.