Browse Prior Art Database

Electrochemical Printhead

IP.com Disclosure Number: IPCOM000052577D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 74K

Publishing Venue

IBM

Related People

DiGirolamo, JA: AUTHOR [+2]

Abstract

A printhead for electrochemical printing uses capillary action to achieve uniform wetting of a print zone with printing fluid.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Electrochemical Printhead

A printhead for electrochemical printing uses capillary action to achieve uniform wetting of a print zone with printing fluid.

Referring to Fig. 1, an array of capillary tubes 10 is interspersed with printing anodes. The capillary tubes 10 are preferably fine glass tubes that are plated on the inside wall 14 (Fig. 2) with a conducting material, such as gold or nickel, to permit their use as a printing cathode in addition to applying printing liquid (arrows indicate flow direction).

One possibility for producing the anode 12 is to use glass capillary tubes 16 that are filled at the printing end with conducting electrode material 18 such as ruthenium dioxide. Contact is then made to the electrode material 18 through the capillary tube 16.

A desired permanent relative positioning of cathodes 14 with respect to the anodes 12 may be achieved by molding the capillary tubes 10 and 16 into a rigid blocklike support 20 (Fig. 3).

1

Page 2 of 2

2

[This page contains 6 pictures or other non-text objects]