Ribbon cartridge motion control with a non-concentric drive

Details Ribbon cartridge motion control with a non-concentric drive Ribbon cartridge motion control with a non-concentric drive

1984-06-05

1987-03-17

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

400212, 400223, 4002351, 400242, B41J 3200

Patent

active

046503560

ABSTRACT:
A cartridge (1) is attached to a carrier and tiltable around a tilting axis (2). The carrier is movable along platen (3) and parallel to the print line and tilting axis (2). On the rear and on the bottom of the cartridge a drive knob (4) is provided as part of the internal cartridge ribbon drive. On the carrier a ribbon feed device with wheel (6) and upright standing blades (7) is provided. Those blades (7) cooperate with walls (9) inside the knob surface and form a kind of screw driver interconnection. Both engaging parts (7) and walls (9) allow a movement perpendicular to their rotational axis and to each other. Wheel (6) with blades (7) rotates around an axis (11) and knob (4) rotates around axis (12). Intentionally the two rotational axes (11, 12) are offset to each other relative to tilting axis (2). Thus, always a moment around this tilting axis (2) is created. To force cartridge (1 ) with knob (4) down onto ribbon feed wheel (6) the rotational axis (11) of wheel (6) is closer to tilting axis (2) than rotational axis (12) of the cartridge ribbon drive.

REFERENCES:
patent: 3976183 (1976-08-01), Fleischmann et al.
patent: 4091913 (1978-05-01), Ku et al.
patent: 4231667 (1980-11-01), Behrendt et al.
patent: 4247210 (1981-01-01), Kacmarcik et al.
patent: 4307969 (1981-12-01), Daughters
patent: 4317636 (1982-03-01), Hume
patent: 4329072 (1982-05-01), Kacmarcik
patent: 4423974 (1984-01-01), Muller et al.
patent: 4472073 (1984-09-01), Valle et al.
IBM Technical Disclosure Bulletin, "Supply Spool Tensioning," Cahill, vol. 25, No. 8, Jan. 1983, pp. 4058-4059.
IBM Technical Disclosure Bulletin, "Proportional Ribbon and Correction Feed Mechanism That Does Both Lift and Feed with a Single Motor," Mink et al., vol. 26, No. 1, Jun. 1983, pp. 292-293.
IBM Technical Disclosure Bulletin, "Variable Lift and Feed Increment Ribbon Correction Mechanism", Greenlief et al., vol. 26, No. 3B, Aug. 1983, pp. 1580-1582.
IBM Technical Disclosure Bulletin, vol. 26, No. 3A, Aug. 1983, "Self-Aligning Ribbon and Tape Drive", C. H. Lingle, pp. 1157-1158.
IBM Technical Disclosure Bulletin, vol. 26, No. 1, Jun. 1983, pp. 67-68, "Unique Cam Arrangement for Printer Ribbon Feed Mechanism", to B. D. Purcell et al.

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