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. 10, 1990
Filed:
Jun. 22, 1989
Paul S Tzeng, Fountain Valley, CA (US);
Richard Mansueto, Huntington Beach, CA (US);
Calcomp Inc., Anaheim, CA (US);
Abstract
In a thermal printer for thermally printing on a wide media with a composite printhead comprising a plurality of standard thermal printheads and including a small diameter print roller for supporting the media adjacent the printhead, an improvement to improve print quality by preventing bowing of the print roller away from the printhead. In one embodiment, there is a first cylindrical support roller mounted parallel to the print roller in rolling contact therewith along the length thereof to oppose vertical movement or deformation of the print roller. In another embodiment, there is a second cylindrical support roller mounted parallel to the print roller in rolling contact therewith along the length thereof to oppose movement or deformation of the print roller relative to the printing surface with the first and second support rollers being disposed on opposite sides of a plane passing through the printhead and the print roller whereby the first and second support rollers together prevent bowing of the print roller with respect to the printing surface in both vertical and lateral directions.