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:
Dec. 14, 1993
Filed:
Feb. 28, 1992
Osamu Naruse, Yokohama, JP;
Hiromichi Komai, Yokohama, JP;
Toshio Inada, Sagamihara, JP;
Toshitaka Hirata, Tokyo, JP;
Kenichi Ichikawa, Machida, JP;
Tomoaki Nakano, Yokohama, JP;
Minoru Ameyama, Yokohama, JP;
Masami Kadonaga, Yokohama, JP;
Syuzo Matsumoto, Yokohama, JP;
Kouji Izumi, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An ink jet head used for pulsed droplet ink jet printer uses a grooved piezo-electric element. The piezo-electric element includes a plurality of grooves, diaphrams and actuators. The actuator and two grooves at both sides of the actuator, filled with stuffing material, covers a corresponding one of passages. Therefore, even if the stuffing material moves when the actuator is energized, an interference problem does not occur. Consequently, the flexure force of each actuator can transmit to the corresponding passage to jet ink in the passage via a nozzle.