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. 07, 1995
Filed:
Sep. 25, 1992
Paul D Gast, Vancouver, WA (US);
Alan Shibata, Vancouver, WA (US);
Eva-Maria Moon, Washougal, WA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A synchronized wiper and pen motion solution for ink-jet printers is described. The invented method and apparatus synchronize the motion of the pen and wiper throughout the wipe stroke, and provide for controlled, simultaneous movement therebetween that avoids pole vaulting, excess interference and ink flicking. Such is accomplished by moving the carriage to a defined position shy of a wiping position above the service station including a sled mounting the wiper; raising the sled to produce a proper interference fit between the wiper and the pen while simultaneously moving the carriage at low speed; continuing the wipe stroke by high-speed carriage movement with the sled stationary; and, at the end of the stroke, lowering the sled to clear the wiper from contact with the pen before reversing carriage motion. The solution lends itself to single- or plural-pen ink-jet printers.