Single laminated element for thermal printing and lift-off corre

Details Single laminated element for thermal printing and lift-off corre Single laminated element for thermal printing and lift-off corre

1981-08-13

1983-05-24

Wright, Jr., Ernest T.

Typewriting machines

Means auxiliary to typewriting function

Means for correcting typing errors

400120, 4002401, 4002411, B41J 2916

Patent

active

043847978

ABSTRACT:
A ribbon (22) in thermal printing has an outer layer (50) which adheres to printed characters at somewhat elevated temperatures but is non-tacky at room temperatures. The embodiment has an active layer of an ethylene vinyl acetate copolymer, an acrylic polymer, and carbon black. Thermal printing is conducted from the preferred ribbon by setting the switch (44) for heating to temperatures higher than the lift-off temperature. Lift-off is accomplished by returning to the printing position of the error and setting the switch (44) for lower voltage to the printing electrodes (9). The guide (29) allows cooling so that the bond is set before the ribbon (22) is pulled away.

REFERENCES:
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patent: 3825437 (1974-07-01), Blair
patent: 3825470 (1974-07-01), Elbert et al.
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patent: 4329071 (1982-05-01), Applegate et al.
patent: 4329075 (1982-05-01), Applegate et al.
patent: 4345845 (1982-08-01), Bohnhoff et al.
IBM Technical Disclosure Bulletin, "Color Thermal-Transfer Printing", Edgar et al., vol. 23, No. 7A, Dec. 1980, pp. 2633-2634.
IBM Technical Disclosure Bulletin, "Tackified Correctable Inks", Anderson et al., vol. 23, No. 12, May 1981, p. 5461.
IBM Technical Disclosure Bulletin, vol. 19, No. 2, Jul. 1976, p. 672, entitled "Delayed Tack Ribbon for Laser Transfer and Other Printing", by C. A. Bruce and C. E. Stratton.
IBM Technical Disclosure Bulletin, vol. 23, No. 5, Oct. 1980, p. 2021, entitled "Electrothermal Ribbon Path", by S. L. Applegate, H. W. Ham, J. J. Molloy and W. F. Voit, Jr.

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