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:
Jul. 16, 1996
Filed:
Sep. 23, 1994
Boris Plesinger, Scottsdale, AZ (US);
Brad D Suma, Cypress, TX (US);
Compaq Computer Corporation, Houston, TX (US);
Abstract
A piezoelectric ink jet printhead is formed from two rectangular blocks of PZT material each having interdigitated series of grooves and ribs formed on one side thereof. The blocks are relatively positioned to precisely align the outer sides of their rib portions in a facing relationship to form a printhead body having therein a spaced series of ink receiving channels defined by the facing groove portions of the two blocks and laterally bounded by internal sidewalls defined by the aligned rib portions of the blocks. The channels open outwardly through front and rear end portions of the body. An orifice plate is operatively secured over the front ends of the channels, and the rear ends of the channels are appropriately sealed. To transmit piezoelectric driving signals to the internal sidewalls a cable is provided with spaced, longitudinally extending series of metal traces formed on the opposite sides of its dielectric body, with cutout areas being formed in a front end portion of the cable between its traces to form finger portions on the front end of the cable. The finger portions of the cable are positioned between the facing sides of the ribs within the printhead body, in precise alignment therewith, and are conductively secured thereto. The metal coated opposite sides of each cable finger are electrically coupled to one another by a metal material extending through a longitudinally spaced series of openings formed in the finger.