Ink ribbon cartridge having means to prevent improper mounting o

Details Ink ribbon cartridge having means to prevent improper mounting o Ink ribbon cartridge having means to prevent improper mounting o

1997-12-15

1999-06-22

Burr, Edgar

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

400246, B41J 3228

Patent

active

059136219

ABSTRACT:
The invention provides an ink ribbon cartridge which ensures proper, reliable mounting of an ink ribbon. The ink ribbon cartridge of the invention includes a pair of spools, an ink ribbon including a band-like sheet wound around the pair of spools and provided with a layer of ink formed on one surface thereof, four spindles which have disk-shaped sections at one end and can be placed, for a specific length in both ends of the pair of spools, and a cover covering the pair of spools around which the sheet is wound and having four round holes in which the disk-shaped sections of each of the spindles are loosely fitted. In one of the four ends of the pair of spools, only the other end of a specific one of the four spindles can be inserted for a specific length, and one of the four round holes formed in the cover is formed such that only the disk-shaped section on one side of the specific spindle can be loosely fitted.

REFERENCES:
patent: D383743 (1997-09-01), Suwa et al.
patent: 4160605 (1979-07-01), Neubaum
patent: 4978240 (1990-12-01), Katsuno
patent: 5100250 (1992-03-01), Suzuki et al.
patent: 5399035 (1995-03-01), Nakae
patent: 5480242 (1996-01-01), Gunderson

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