Print ribbon cartridge with vacuum buffer chambers

Details Print ribbon cartridge with vacuum buffer chambers Print ribbon cartridge with vacuum buffer chambers

1989-01-19

1990-12-04

Eickholt, Eugene H.

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

400234, 400245, 242182, B41J 3528

Patent

active

049749773

ABSTRACT:
A replacement cartridge for replacing spent ink ribbon on a continuous printer. The cartridge interfaces with the printer including a print head past which a document is advanced, a drive for feeding the ribbon tape, and a source of vacuum for effecting vacuum zones in which the feeding tape is buffered against acceleration shock. Included in the cartridge are a supply and takeup reel for the ribbon and between which the ribbon extends in a defined feed path through a pair of tape buffering vacuum chambers upstream and downstream of the print head. Magnets secure the cartridge to the printer at a guided interface in registry with the operative components of the printer. Pre-loading the ribbon in the cartridge entirely threaded throughout its feed path, enables replacement to be performed in a minimum of time requiring only the removal of the spent cartridge and immediately replacing it with the cartridge containing the reload of fresh ribbon.

REFERENCES:
patent: 2919785 (1960-01-01), Newman et al.
patent: 2998878 (1961-09-01), Biedinger et al.
patent: 3952968 (1976-04-01), McKinstry et al.
patent: 4265551 (1981-05-01), Adamek et al.
patent: 4313683 (1982-02-01), Brown et al.
patent: 4747715 (1988-05-01), Lahr
IBM Technical Disclosure Bulletin "End-of-Ribbon Sensor and Cartridge-Present Indicator", Jenkins, vol. 27, No. 6, Nov. 1984, pp. 3645-3647.

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