Jet printing ink composition for glass
AssigneeA. B. Dick Company
InventorJoseph Wachtel
Life of this patent
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Abstract
An ink composition for printing onto the surfaces of glass or other glazed ceramic surfaces by jet printing in which the preferred formulation for the printing ink composition comprises 2 - 20% by weight of a linear novolac resin, 0.6 - 3% by weight of an alcohol or water and alcohol soluble dyestuff, 3 - 7% by weight of an evaporation retardant in the form of a glycol ether or glycol ester, with the remainder water and alcohol, with the water present in an amount up to 50% by weight of the alcohol and which may contain a soluble ionizable salt when the electrical resistivity of the ink composition exceeds 2000 ohm/cm.
Claims11
An ink composition consisting essentially of
- 1 - 30% by weight linear novolac resin
- 0.4 - 5% by weight soluble dyestuff
- 0 - 20% by weight evaporation retardant
- 0 - 1.5% by weight alkali metal thiocyanate
- Remainder water and C.sub.1 - C.sub.5 alcohol, with the water present in an amount up to 80% by weight of the alcohol,
- said ink having a viscosity (20.degree. C) within the range of 1.0 - 8.0 cps, an electrical resistivity of less than 3000 ohm-cm, surface tension of 22.5 - 60 dynes/cm, sonic viscosity within the range of 1200 - 1800 meters/sec. and a specific gravity within the range of 0.800 - 1.045.
An ink composition for printing onto the surfaces of glass or other ceramic surfaces by jet printing in which the ink composition consists essentially of
- 1 - 30% by weight of a linear novalac resin
- 0.4 - 5% by weight of a solvent soluble or water and alcohol soluble dyestuff
- 0 - 20% by weight of an evaporation retardant
- Remainder water and C.sub.1 - C.sub.5 alcohol, with the water present in an amount up to 80% by weight of the alcohol,
- and which includes an ionizable salt present in an amount up to 0.15% by weight when the electrical resistivity of the ink composition exceeds 2000 ohm-cm.
Dependencies are inferred from the claim text.