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Print Head Control Apparatus

IP.com Disclosure Number: IPCOM000082037D
Original Publication Date: 1974-Sep-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Colglazier, DF: AUTHOR [+2]

Abstract

This control apparatus finds particular utility in line printers used for printing upon cut forms. Insertion and removal of the cut form must be made easy for the operator to take advantage of the high-speed printing capability of a line printer. The line printer can be a modified form of the type shown and described in the IBM Technical Disclosure Bulletin, Vol. 15, No. 11, April 1973, pages 3370 to 3372.

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Print Head Control Apparatus

This control apparatus finds particular utility in line printers used for printing upon cut forms. Insertion and removal of the cut form must be made easy for the operator to take advantage of the high-speed printing capability of a line printer. The line printer can be a modified form of the type shown and described in the IBM Technical Disclosure Bulletin, Vol. 15, No. 11, April 1973, pages 3370 to 3372.

Print heads 1 mounted on a carriage 2, movable parallel to platen 3, are automatically retracted away from the platen when the carriage reaches a home position to facilitate paper insertion, and, thereafter, automatically move to the printing position as the carriage 2 leaves the home position under a start command.

Print heads 1 are secured to plate 4 which is slidably supported by movable carriage 2. It is moved along shafts 5 and 6 relative to platen 3 by an endless belt 7, which is attached to carriage 2 and driven by stepping motor 8.

When a document or cut form is to be inserted into the line printer, carriage 2 is moved under control of motor 8 into an extreme left-hand position where print heads 1 are held in a retracted position away from platen 3. Carriage 2 has a spaced pair of bifurcated arms 9, 10 which rotatably support longitudinal shaft 11. Eccentrics 12 and 13 are fixed to shaft 11 between the bifurcated arms 9, 10. Legs (not visible in the figure) which depend from plate 4 are held in contact with eccentrics 12, 13...