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Browse Prior Art Database

Integrated Multiple Row Print Head

IP.com Disclosure Number: IPCOM000049310D
Original Publication Date: 1982-Apr-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 65K

Publishing Venue

IBM

Related People

Pawletko, JP: AUTHOR [+2]

Abstract

The reduced energy levels required by the write electrodes of certain electrolytic printers has led to a search for the best methods of implementing an integrated print head that can take full advantage of such energy reduction. One such method utilizes a combinational approach wherein a multiple of ceramic or ceramic-glass layers, with different functions, are employed as required. This approach permits close vertical spacing of the print head styli without sacrificing structural integrity of the entire print head, and also allows unitary lengths as contrasted with other approaches which require multiple sections and attendant precision grinding.

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Integrated Multiple Row Print Head

The reduced energy levels required by the write electrodes of certain electrolytic printers has led to a search for the best methods of implementing an integrated print head that can take full advantage of such energy reduction. One such method utilizes a combinational approach wherein a multiple of ceramic or ceramic-glass layers, with different functions, are employed as required. This approach permits close vertical spacing of the print head styli without sacrificing structural integrity of the entire print head, and also allows unitary lengths as contrasted with other approaches which require multiple sections and attendant precision grinding.

Fig. 1 shows a number of ceramic layers that have been joined together. The outer layers 12 and 14 serve as structural stiffeners and differ from one another only in length, their front-to-back dimension, as shown in the drawing. Layer 16 is a spacer that is sandwiched between the conductor or print styli carrying layers 18. Details of a conductor layer 18 are illustrated in Figs. 2 and 3.

The conductor layers 18, which also differ from each other in length, are about 0.010 inch thick. Each conductor layer 18 has a group of print styli 20 (see both Figs. 1 and 2) fashioned on or in their top and bottom surfaces. The styli are placed so that there are 60 printing elements (pels) per inch on each surface thereof. Together, the styli 20 on the top and bottom of each conductive layer 18 yield a 120 pel matrix, while the use of two conductor layers...