Feed for thermal printing ribbon

Details Feed for thermal printing ribbon Feed for thermal printing ribbon

1988-10-31

1990-05-08

Reynolds, Bruce A.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 76PH, 100120, G01D 900, G01D 1510

Patent

active

049242407

ABSTRACT:
A thermal transfer printing device for a franking machine uses a multi-strike thermal transfer ribbon. Mail items are fed to the printing device and frictional engagement between the mail item and the ribbon during a printing operation draws ribbon from a supply spool. After completion of the printing operation, the mail item is separated from the ribbon and the ribbon is partially rewound onto the supply spool so that each portion of the ribbon is used progressively a number of times. An encoder disc on the supply spool shaft generates signals indicative of the length of ribbon drawn from and rewound onto the spool to control rewinding of the ribbon.

REFERENCES:
patent: 4746234 (1988-05-01), Harry

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