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:
May. 02, 2006
Filed:
Mar. 04, 2003
James P. Axtell, Portland, OR (US);
Trudy L. Benjamin, Portland, OR (US);
James P. Axtell, Portland, OR (US);
Trudy L. Benjamin, Portland, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A dynamic memory based integrated circuit ink jet firing cell that includes a heater resistor, a drive transistor, and a dynamic memory circuit for storing firing data only for such heater resistor. Also disclosed is an integrated circuit firing array that includes a plurality of dynamic memory based firing cells divided into a plurality of fire groups of firing cells, each fire group having a plurality of subgroups; data lines for providing energizing data to the firing cells; control lines for providing control information to the firing cells wherein all firing cells within a subgroup are connected to a common subset of the control lines so as to be controlled to concurrently store energizing data; and a plurality fire lines for supplying energizing energy to the firing cells, wherein all firing cells of a fire group receive energizing energy from only one fire line.