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:
Oct. 23, 1984
Filed:
Jun. 22, 1982
Tadao Kohashi, Moriguchi, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
In a head of an electroosmotic ink recording apparatus wherein a porous substance film 40 and a second electrode 50 which is permeable to a fluid ink 200 are accumulated in sequence on a principal face 11 of a non-porous substrate 10, on which a plural number of first electrodes (recording electrodes) 20 are provided, signal voltages V.sub.B and V.sub.B ' for ink recording being applied between the first electrodes 20 and the second electrode 50, the first electrodes are of ink-philic (generally hydrophilic) conductive substance and their surfaces are isolated with a substantially ink-repellant (generally hydrophobic) and insulative substance, thereby recording has a clear discretion between neighboring dots drawn by corresponding neighboring second electrodes.