Typewriting machines – Including interposed inking device for record-medium – Means auxiliary to ribbon mechanism
Patent
1987-01-08
1988-05-31
Wiecking, David
Typewriting machines
Including interposed inking device for record-medium
Means auxiliary to ribbon mechanism
400212, 400215, 400216, 4002162, 400225, 400229, 400234, 400247, 226 95, 242147A, 242182, B41J 3508, B41J 3334
Patent
active
047477156
ABSTRACT:
A printer having extended ribbon capacity is provided with a vacuum buffering system which stores ribbon on either side of a ribbon utilization mechanism, illustratively an impact print head. In a preferred embodiment, the ribbon is stored in a pair of vacuum chambers which are arranged to pivot about a common axis as a carriage which bears the print head is translated along a carriage path. The vacuum chambers are each provided with telescopically extendable members which compensate for variations in the distance between the pivot of the vacuum chambers and the print carriage, as the print carriage is translated. A ribbon lift system for multitrack embodiments utilizes off-carriage drive and a direction-determining clutch toggle system.
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"Peripheral Printer Ribbon Drive Mechanism"; Firth et al.; IBM Technical Disclosure Bulletin; vol. 22, No. 3, p. 875; Aug. 1979.
Creative Associates
Wiecking David
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