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:
Mar. 04, 2003
Filed:
Jan. 19, 2001
Applicant:
Inventor:
Antoni Gil Miquel, Barcelona, ES;
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 1/3076 ; B41J 1/302 ;
U.S. Cl.
CPC ...
B41J 1/3076 ; B41J 1/302 ;
Abstract
To avoid the effects of unwanted variations in the pen-to-paper spacing of a printer, deliberate and effectively randomised variations are introduced by using paper drive rollers ( ) with an irregular cross-section. In one embodiment, an overdrive roller comprises rollers ( ) the surfaces of which incorporate flattened portions ( ) of differing widths and spacings. The number, size and/or spacing of the portions ( ) differ from roller to roller. Instead or in addition, variations may be incorporated into a pinch wheel ( ), platen ( ) or other component of the paper drive system.