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Color Inks for Impact and Thermal Transfer Ribbons

IP.com Disclosure Number: IPCOM000043426D
Original Publication Date: 1984-Aug-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 17K

Publishing Venue

IBM

Related People

Aviram, A: AUTHOR

Abstract

Ribbons for impact printing and thermal transfer printing are made in many cases with ink formulations based on polyamides, such as EMEREZ* or VERSAMIDE**. It could be desirable to extend the use of such ribbons to color printing without altering the basic formulations except for the pigment, for example, by incorporating reactive dyes. Color ribbons for impact printing and thermal transfer printing can be made for use in color printing without altering the basic formulations except for the pigment by the availability of a family of commercial dyes, called reactive dyes. These dyes are extensively used in the fabric-dying industry for dying cotton, wool and nylon.

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Color Inks for Impact and Thermal Transfer Ribbons

Ribbons for impact printing and thermal transfer printing are made in many cases with ink formulations based on polyamides, such as EMEREZ* or VERSAMIDE**. It could be desirable to extend the use of such ribbons to color printing without altering the basic formulations except for the pigment, for example, by incorporating reactive dyes. Color ribbons for impact printing and thermal transfer printing can be made for use in color printing without altering the basic formulations except for the pigment by the availability of a family of commercial dyes, called reactive dyes. These dyes are extensively used in the fabric-dying industry for dying cotton, wool and nylon. The last two materials are basically polyamides, and the dyes are designed to react with the amide bond

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and attach to the polymeric chain at the nitrogen site. These dyes should be expected to react with amide bonds in general, when an "N-H" bond is present in the amide. A VERSAMIDE-wax formulation, which is used successfully in thermal printing, has been used to check the dye-polyamide chemical reaction and evaluate the suitability to color printing. An illustrative thermal transfer color formulation is as follows: VERSAMIDE 871 - (10 g) and Japan wax (11 g) were dissolved in 100 ml cyclohexanone (at 50OEC), and 2g CIBACORN*** RED RB together with 0.15 g dimethyl docosanilamine were added. The mixture was ball milled for 48 hours. Infra...