Browse Prior Art Database

Print Registration Bar

IP.com Disclosure Number: IPCOM000076957D
Original Publication Date: 1972-May-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Darwin, DP: AUTHOR

Abstract

Described is a diagnostic and adjustment tool, suitable for use in adjusting and diagnosing misregistration in front printers of the belt or chain variety. The tool comprises an elongated bar having multiple notches therein, each in registration with one of the print locations. The notched bar is mounted by means, not illustrated, to be precisely in line with the print positions. Fig. 1 illustrates a condition resulting from improper print emitter setting, since all of the characters illustrated are skewed or displaced from their proper position. A correction of the emitter setting will correct the condition illustrated.

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Print Registration Bar

Described is a diagnostic and adjustment tool, suitable for use in adjusting and diagnosing misregistration in front printers of the belt or chain variety. The tool comprises an elongated bar having multiple notches therein, each in registration with one of the print locations. The notched bar is mounted by means, not illustrated, to be precisely in line with the print positions. Fig. 1 illustrates a condition resulting from improper print emitter setting, since all of the characters illustrated are skewed or displaced from their proper position. A correction of the emitter setting will correct the condition illustrated.

Fig. 2 illustrates hammer firing time misadjustment for hammers numbers 2 and 5. The displacement in the second print position indicates, depending upon the arrangement of the particular printer, early or late firing depending on the direction of type motion. Hammer number 5 or print position 5 is oppositely maladjusted. Each of the hammer firing mechanisms of the associated harmers is provided with an adjustment for varying the flight time. The nature of the adjustment is indicated by the displacements illustrated in Fig. 2 for the particular printer involved. The flight times are generally adjusted by a screw adjustment. These can be made according to the printer specifications to correct the displacements illustrated in Fig. 2.

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