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Class Information
Number: 400/241.4
Name: Typewriting machines > Including interposed inking device (e.g., ribbon) for record-medium > Ribbon, per se > Particular ribbon material > Including ink-impervious backing for ribbon
Description: Subject matter wherein the ribbon* has first and second surfaces, the first surface contacting a record-medium* to imprint a character* by transferring ink* from the ribbon to the record-medium when the second surface is contacted by a type-face*, and wherein the second surface of the ribbon is formed of a substance through which ink is incapable of passing to preclude direct contact of the type-face with ink.

Patents under this class:

Patent Number Title Of Patent Date Issued
7931413 Printing system ribbon including print transferable circuitry and elements Apr. 26, 2011
7829162 Thermal transfer ribbon Nov. 9, 2010
6796733 Thermal transfer ribbon with frosting ink layer Sep. 28, 2004
6706353 Image forming substrate Mar. 16, 2004
6629792 Thermal transfer ribbon with frosting ink layer Oct. 7, 2003
6402402 Pressure-sensitive and heat-sensitive image transfer apparatus for recording Jun. 11, 2002
5405203 Multicolor ink ribbon having barrier and protective layers Apr. 11, 1995
4925324 Color ink ribbon for thermal printer May. 15, 1990
4886386 Ink ribbon having elastomeric protective backing Dec. 12, 1989
4744685 Thermal transfer ribbon and method of making same May. 17, 1988
4569609 Print ribbon comprising a frictional back layer Feb. 11, 1986
4557616 Resistive ribbon thermal transfer printing system and process Dec. 10, 1985
4556892 Thermal transfer recording system and method Dec. 3, 1985
4521471 Processes and articles for removing typewriter inks Jun. 4, 1985
4472479 Light barrier fluorescent ribbon Sep. 18, 1984
4320170 Polyurethane ribbon for non-impact printing Mar. 16, 1982
4269892 Polyester ribbon for non-impact printing May. 26, 1981
4243334 Ribbon cartridge Jan. 6, 1981
4016321 Printer ribbon substrates Apr. 5, 1977

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