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. 29, 1986
Filed:
Oct. 26, 1984
Tetsuro Nakayama, Shizuoka, JP;
Tsutomu Kimura, deceased, late of Shizuoka, JP;
Tokyo Electric Co., Ltd., Tokyo, JP;
Abstract
The present invention provides an ink dot printer wherein an electrostatic field is produced between ends of needles and an electrode, and the needles are selectively actuated to cause ink sticking to the ends of the needles to fly with a Coulomb force thereby to form dots with ink thus flown on record paper which covers the electrode without contacting the needles with the record paper. By this construction, noises are signficantly reduced and the ends of the needles are not damaged while printing results of a high resolution can be obtained. In addition, a tapered configuration of the ends of the needles will facilitate separation of the ink from the needles, assuring the uniformity of dots in shape and size. In case a positive voltage is applied to the electrode while the needles are grounded, treatment for insulation can be performed easily, allowing production of printing heads with ease and at a reduced cost. Besides, in case a bimorph is employed for a driving source for a needle, production of noises at the driving sources can be eliminated.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile