Browse Prior Art Database

Solid Inks for Thermal Ink Jet from Solid Solutions

IP.com Disclosure Number: IPCOM000112767D
Original Publication Date: 1994-Jun-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 26K

Publishing Venue

IBM

Related People

Ayala, JE: AUTHOR [+3]

Abstract

The use of solid solutions derived from organic chemicals to produce hot-melt thermal ink jet inks gives a great deal of flexibility. The individual chemicals can be selected for several properties which would then produce inks with desirable properties, as follows: chemicals with low MW, high surface tension, high polarity, low melt viscosity, high thermal stability, and low toxicity produce inks with high jet velocity, good maintenance, good print quality, good lifetime, low smear, and low toxicity.

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Solid Inks for Thermal Ink Jet from Solid Solutions

      The use of solid solutions derived from organic chemicals to
produce hot-melt thermal ink jet inks gives a great deal of
flexibility.  The individual chemicals can be selected for several
properties which would then produce inks with desirable properties,
as follows:  chemicals with low MW, high surface tension, high
polarity, low melt viscosity, high thermal stability, and low
toxicity produce inks with high jet velocity, good maintenance, good
print quality, good lifetime, low smear, and low toxicity.

A representative formulation is:

             Component                             Percent
            ----------------                      --------------
             Propionamide                              49.4%
             n-Butyramide                              19.3%
             Isobutyramide                             19.3%
             Water                                     10.0%
             Food Black 2 (acid form)                   2.0%

      This ink was printed in a heated head at 65ºC with a jet
velocity varying from 225 to 350 in/sec depending on the frequency.
All jets are operable with no operator intervention af...