Resistive ribbon printing apparatus and method

Details Resistive ribbon printing apparatus and method Resistive ribbon printing apparatus and method

1980-06-23

1982-09-21

Wright, Jr., Ernest T.

Typewriting machines

Typing by other than type-face or type-die

Thermal

346 76R, 219216, 4002411, B41J 320

Patent

active

043504493

ABSTRACT:
A printing apparatus and method employs a print head comprising a plurality of aligned printing electrodes. The print head is movable relative to a ribbon comprising a resistive layer, a conductive layer, and a layer of thermally transferrable ink to provide a desired image on conventional paper by selective energization of the printing electrodes. Each of the electrodes is energizable by a control circuit which includes a constant current driver for each printing electrode and a regulating circuit which permits a selected current to be maintained in each of the energized drivers.

REFERENCES:
patent: 3725898 (1973-04-01), Canton
patent: 3744611 (1973-07-01), Montanari et al.
patent: 3874493 (1975-04-01), Boyd
patent: 3934695 (1976-01-01), Kovalick
patent: 3975707 (1976-08-01), Ito et al.
patent: 4113391 (1978-09-01), Minowa
patent: 4149171 (1979-04-01), Sato et al.
patent: 4168421 (1979-09-01), Ito
patent: 4219824 (1980-08-01), Asai
patent: 4236834 (1980-12-01), Hafer et al.
patent: 4262188 (1981-04-01), Beach
IBM Technical Disclosure Bulletin, "Resistive Ribbon Printing on Typewriter Keys", Wilbur, vol. 20, No. 12, May 1978, p. 5314.
IBM Technical Disclosure Bulletin, "Thermal Print Head Power Supply Regulator", Heiling et al., vol. 22, No. 5, Oct. 1979, p. 2023.
IBM Technical Disclosure Bulletin, "Constant Current Driver Multiplexing Scheme for Electrothermal Printing", Findlay, vol. 23, No. 8, Jan. 1981, pp. 3875-3876.

Affiliated with

Also associated with

Rating

Resistive ribbon printing apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Resistive ribbon printing apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resistive ribbon printing apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2074288