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Multiple Usage Print Head

IP.com Disclosure Number: IPCOM000046720D
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Hafer, CH: AUTHOR [+2]

Abstract

An electrothermal print head is shown which is fabricated from a plurality of laminated elements. The print head is shown in Fig. 1. The print head comprises base members 10 and cap members 11 which are made of an electrically insulating material that is easily moldable. The base member 10 and cap members 11 are basically of the same design, but there are differences in the opening for a cable assembly. The print head can be assembled on a fixture having four fixed locating pins. A selected plurality of print elements 12 and insulator members 14 are alternately stacked until the desired number of print elements 12 are in place. The assembly is then held together by suitable fastener devices, such as screws. Each of the print elements 12 is similar and can be formed by etching, stamping, etc.

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Multiple Usage Print Head

An electrothermal print head is shown which is fabricated from a plurality of laminated elements. The print head is shown in Fig. 1.

The print head comprises base members 10 and cap members 11 which are made of an electrically insulating material that is easily moldable. The base member 10 and cap members 11 are basically of the same design, but there are differences in the opening for a cable assembly. The print head can be assembled on a fixture having four fixed locating pins. A selected plurality of print elements 12 and insulator members 14 are alternately stacked until the desired number of print elements 12 are in place. The assembly is then held together by suitable fastener devices, such as screws. Each of the print elements 12 is similar and can be formed by etching, stamping, etc., of any appropriate electrode material. The only difference in print elements 12 is the position of a contact prong 16. The contact prongs 16 extend into a central opening 18 in print elements 12 and insulator members 14, and the prongs 16 are spaced apart to contact a different conductor on flat cable 20. Flat cable 20 has a plurality of spaced conductors on each side, one for each print element to be energized. The cable is inserted into central opening 18 to make contact with all print elements 12 through prongs 16, as shown in Fig. 2. An enlarged view of the tip end 22 of print elements 12 is shown in Fig. 3. The tip end 22 tapers to a small dime...