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. 04, 1995
Filed:
Sep. 20, 1993
Jeff T Stapleton, Huntington Beach, CA (US);
CalComp Inc., Anaheim, CA (US);
Abstract
Apparatus for automatically determining if roll or cut-sheet media is being used in a plotter or similar device and for automatically setting some of the operating parameters in lieu of manual input by an operator. The roll media has a hole therein adjacent the roll end. An optical sensing pair senses the passage of light through the media at a point passed by the hole. If a suspected end is found, the media is moved a distance greater than the hole diameter. If light is still detected, the edge of a cut sheet has been detected. If light is no longer detected, it was a hole and the end of a roll of media has been detected. By being able to determine the type of media involved, the plotter logic can measure the width of the media and then get a desired length from a look-up table and thereafter determine if there is a proper length of media available for the plot.