Ink dispenser with "frozen" solid ink
First Claim
Patent Images
1. An apparatus for dispensing ink which is a solid at 25°
- C. from a reservoir onto a recording media, said apparatus comprising;
a feed tube having an entrance in contact with the ink in the reservoir;
a nozzle coupled to the feed tube; and
a resistance heater for melting the ink, said resistance heater extending from the reservoir through the feed tube to the nozzle.
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Abstract
A new type of apparatus for dispensing "frozen" solid ink and the ink for use therein for printing on paper is disclosed. The ink dye vehicle is chosen to have a melting point above room temperature, so that the ink which is melted in the apparatus will not be subject to evaporation or spillage during periods of non-printing. The vehicle is also chosen to have a low critical temperature to permit the use of the solid ink in a thermal ink jet printer.
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Citations
10 Claims
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1. An apparatus for dispensing ink which is a solid at 25°
- C. from a reservoir onto a recording media, said apparatus comprising;
a feed tube having an entrance in contact with the ink in the reservoir; a nozzle coupled to the feed tube; and a resistance heater for melting the ink, said resistance heater extending from the reservoir through the feed tube to the nozzle. - View Dependent Claims (2, 3, 4)
- C. from a reservoir onto a recording media, said apparatus comprising;
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5. An ink for writing on paper with a non-impact printer having expulsion means for expelling said ink from an orifice, said ink consisting essentially of:
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a dye; and a vehicle which is a solid at 25°
C. consisting ofsolvent for said dye, said solvent having a high vapor pressure, a melting point greater than 25°
C., and a critical temperature less than the degradation temperature of said expulsion means, anda binder with a low vapor pressure for binding said dye to said paper when said solvent has sublimed off of the paper. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification