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. 09, 1985
Filed:
Mar. 07, 1983
Masanori Horike, Tokyo, JP;
Tatsuya Furukawa, Yokohama, JP;
Takuro Sekiya, Yokohama, JP;
Yutaka Ebi, Kawasaki, JP;
Takuro Isayama, Tokyo, JP;
Masaaki Tachiki, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A new nozzle structure is disclosed for an ink ejection head of an electric field on-demand type ink jet printer. A plurality of circular nozzles and first electrodes integral with the nozzles are arranged along the widthwise direction (X direction) and feed direction (Y direction) of a sheet of paper. A plurality of lead terminals are individually connected to the arrays of the first electrodes each of which extends in the Y direction. Second electrodes are located at the rear of the first electrodes and individually connected to the arrays of the first electrode each of which extends in the X direction. A third or counter electrode is positioned in front of the first electrodes and at the back of the sheet. Each of the second electrodes is mounted on a nozzle plate or a nozzle support. The first electrodes are supplied with voltage pulses corresponding to image data, the second electrodes for printing with a voltage opposite in polarity to the voltage pulses, and the second electrodes for non-printing with a zero voltage or a voltage common in polarity to the voltage pulses sequentially and repeatedly on the time sharing basis. The third electrode is applied with a constant voltage of the opposite polarity to the voltage pulses.