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. 24, 1991
Filed:
Dec. 08, 1989
Tadashi Nakamura, Morioka, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
There is provided a sheet feed control method for feeding sheets at a predetermined pitch to the printing section of a printing machine that comprises a sheet feeding roller and a pair of small rollers provided one upstream and the other down stream and pressed against the outer periphery of said sheet feeding roller to sequentially catch and convey sheets, said sheet feed roller being rotated by means of a transmission gear mechanism driven by a source of driving force, said control method being characterized by that it is so designed as to be capable of calculating the time when the rear edge of a sheet passes between said sheet feed roller and said upstream small roller and offsetting or compensating for the preceding backlash of said transmission gear mechanism by modifying said pitch when the rear edge of said sheet passes between said sheet feed roller and said upstream small roller by an amount that corresponds to the amount of the backlash. A sheet feed control method according to the present invention can be effectively used for preventing any unintended blanks and overlaps of printing from occurring and ensuring an excellent quality of printing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile