Ink ribbon

Details Ink ribbon Ink ribbon

1994-07-25

1996-03-26

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Ribbon, per se

400240, 40012002, 347177, 347178, B41J 3100

Patent

active

055015379

ABSTRACT:
A printing unit header finding mark PH1 is formed at the head of the color ink areas Y (yellow), M (magenta), C (cyan), and K (black). Color header finding marks YH, MH, CH, and KH which are respectively formed at the head of the color ink areas Y, M, C, and K have a predetermined length in the longitudinal direction and do not overlap with the printing unit header finding mark PH1 in the ribbon width direction. The head of the printing unit and the color ink areas Y, M, C, and K are accurately detected in accordance with the output of two sensors 2A and 2B. One of the marks PH1, YH, MH, CH, and KH has a length which varies in a manner which indicates the diameter of the ribbon wound on one of the supply and the take-up reels.

REFERENCES:
patent: 4794404 (1988-12-01), Shiraishi et al.
patent: 5037218 (1991-08-01), Shimizu et al.
patent: 5073053 (1991-12-01), Kashiwagi
patent: 5080512 (1992-01-01), Schofield et al.
patent: 5104247 (1992-04-01), Oshima
patent: 5144331 (1992-09-01), Amano
patent: 5259680 (1993-11-01), Shimizu et al.
patent: 5325115 (1994-06-01), Tanahashi

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