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Imprinter Control Mechanism

IP.com Disclosure Number: IPCOM000093798D
Original Publication Date: 1966-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Creedon, JM: AUTHOR [+3]

Abstract

A platen roller, not shown journaled on shaft 5 is driven successively through forward and reverse print strokes by this mechanism. The platen is forced downwardly into printing engagement with a document through distance A during forward strokes and through a greater distance B during reverse strokes. The mechanism is duplicated at both ends of shaft 5, the platen roller being mounted on the portion of shaft 5 between its ends.

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Imprinter Control Mechanism

A platen roller, not shown journaled on shaft 5 is driven successively through forward and reverse print strokes by this mechanism. The platen is forced downwardly into printing engagement with a document through distance A during forward strokes and through a greater distance B during reverse strokes. The mechanism is duplicated at both ends of shaft 5, the platen roller being mounted on the portion of shaft 5 between its ends.

Stationary frame member 11 fixedly supports pins 12, 13 and 14 and further includes cam surfaces 15 and 16. To effect a forward print stroke, drive shaft 1 is rotated counterclockwise. Such action moves link 3 to the left causing follower wheel 17 rotatably mounted on 5 to ride surfaces 15 and 16 until it arrives at the terminal position indicated at 17". During this movement inclined surface 16 forces 17 downwardly to the level indicated at 17' causing the platen to print through distance A. Also during this period of movement member 7 which is slidable on 11 and pivotable about 14 is pulled to the left and pivoted counterclockwise by 3 acting through connecting spring 6. When 17 reaches position 17', 7 is in the position indicated at 7' and is thereafter held in this position by the tension of 6. The latter maintains the right-most portions of slots 8 and 9 in frictional engagement with 12 and 13 respectively.

To effect a reverse print stroke 1 and 2 are rotated clockwise to bring 3 back to its initial positi...