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High-Speed Printer Mechanism

IP.com Disclosure Number: IPCOM000098827D
Original Publication Date: 1958-Jun-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Clauer, CK: AUTHOR

Abstract

This printing mechanism provides a means for high-speed printing wherein the electronic switching is reduced to a minimum. The characters are printed by heads arranged in a helical manner on the surface of a drum. Each head consists of five stylus points which print on current sensitive paper. The equivalent stylus points of all heads are connected together. Paper is held against the drum by a platen and, as the drum turns, the head entering the platen area will scan seven vertical positions.

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High-Speed Printer Mechanism

This printing mechanism provides a means for high-speed printing wherein the electronic switching is reduced to a minimum. The characters are printed by heads arranged in a helical manner on the surface of a drum. Each head consists of five stylus points which print on current sensitive paper. The equivalent stylus points of all heads are connected together. Paper is held against the drum by a platen and, as the drum turns, the head entering the platen area will scan seven vertical positions.

The high-speed switching is accomplished since only one stylus block is presented at the printing point to permit complete circuits between the styli thereon and the grounded platen. Because the remaining stylus blocks on the drum are not positioned under the platen, no circuits may be completed there through and these styli remain inoperative.

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