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Nested Actuator Print Head

IP.com Disclosure Number: IPCOM000051296D
Original Publication Date: 1981-Jan-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

Cross, RG: AUTHOR

Abstract

Single-wire print actuators for matrix printers, each consisting of a bobbin, a magnet, and a print wire guide, are positioned in a nested fashion to fire and print a single line of dots vertically without horizontal displacement of the actuators.

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Nested Actuator Print Head

Single-wire print actuators for matrix printers, each consisting of a bobbin, a magnet, and a print wire guide, are positioned in a nested fashion to fire and print a single line of dots vertically without horizontal displacement of the actuators.

A print actuator configuration of interest as background is shown in [1], but is preferably divided into two slanted groups per eight print wires rather than one slanted group as illustrated in that article. The print assembly has utility in a printer such as that described in [2].

In those printer configurations, the slanted actuators move horizontally to print characters. To print a vertical line of dots for character generation, a group of eight slanted actuators have to move the distance of eight widths of one actuator. Although slanting the wires or actuators as in Fig. 1a is useful, it is desirable, in some cases, to have each actuator group consisting of eight actuators positioned so that the wires at the paper are in a vertical line, as in Fig. 1b. Fig. 1a shows the dot print pattern with slanted actuators, achieved without moving the actuators horizontally. Fig. 1b shows the dot print pattern with nested head actuators, achieved without moving the actuators horizontally. If the actuators in the slanted configurations are nested or arranged in fan shape, they will not be close enough to each other to maintain proper character overlap for the print speeds sought, and for printing a full...