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. 25, 2006
Filed:
Dec. 15, 2004
Jerry a Young, Nampa, ID (US);
Jerry A Young, Nampa, ID (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
An apparatus for detecting the engagement of a consumable in a printing device includes a consumable cartridge having a rotatable member carried by the cartridge, and a drive member configured to engage and rotate the rotatable member. A proximity sensor positioned adjacent an engagement interface between the rotatable member and the drive member generates an output signal variable with the distance between the rotatable member and the drive member. Data that is stored in memory provides at least one predetermined set of characteristic values of the proximity sensor output signal versus distance between the rotatable member and the drive member, where the at least one characteristic value of the proximity sensor output signal is indicative of engagement between the rotatable member and the drive member. Processing circuitry coupled to the proximity sensor and the memory determines when the rotatable member and drive member are engaged.