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:
Jan. 04, 1977
Filed:
Jan. 21, 1976
Applicant:
Inventors:
Rick A Warp, San Diego, CA (US);
John L Morton, Jr, Escondido, CA (US);
Majid Azmoon, San Diego, CA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ; B65J / ;
U.S. Cl.
CPC ...
1971 / ; 226 78 ; 226 85 ; 226195 ;
Abstract
A printer-plotter system includes a vacuum-buffered bidirectional paper drive system for moving paper uniformly forward and backward over a sprocketed platen and sprocketed drum. The platen comprises a stationary portion with a flat region and a rotatable sprocketed portion. The platen and drum are connected by a drive belt for synchronous rotation of the drum with the sprocketed portion of the platen to assure proper contact of a print head with the flat region of the stationary portion and proper movement of paper by the sprocketed portion after printing.