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. 20, 1998
Filed:
Apr. 29, 1996
Applicant:
Inventors:
Antonio Hinojosa, Sant Cugat del Valles, ES;
Richard Lewis, Sant Cugat del Valles, ES;
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16C / ;
U.S. Cl.
CPC ...
384219 ; 400613 ; 2424218 ; 242422 ; 2425983 ; 384434 ;
Abstract
A roll-feed apparatus which is removably attached to a printer/plotter that has a self-alignment feature. Media, such as paper, vellum or film is pulled through the printer/plotter. However, a back-tension is created in the roll-feed apparatus by creating a pre-determined force on the shaft to which a roll of media is mounted. By increasing the force on the shaft, frictional drag is induced impeding the shaft's rotation. It has been found that the rotational impedance, in conjunction with the pull of the printer/plotter, corrects any misalignment of the media in approximately six meters of media run.