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:
Sep. 08, 1992
Filed:
Jul. 29, 1991
Kris M English, Vancouver, WA (US);
J P Harmon, Vancouver, WA (US);
Jefferson P Ward, Brush Prairie, WA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A birdirectionally movable carriage in an ink-jet printer contains either a color or a black ink cartridge. When a color cartridge is mounted on the carriage, a rotatable service station having both color and black cartridge service stations mounted thereon rotates to position the color service station adjacent the travel path of the color cartridge. A cap on the color service station includes a lip for sealing against the color cartridge and a flexible diaphragm which flexes to minimize pressure differentials between the interior and exterior of the cap. Because ink vapor diffusion through the diaphragm is possible, a diffusion vent is provided to a chamber on the side of the diaphragm exposed to the exterior of the cap. The diffusion vent permits diaphragm flexing while inhibiting ink vapor diffusion from the cap.