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US5273573A Expired / Lapsed US ⏱️ 0.0 years remaining

Specific dye set for thermal ink-jet printing on paper

Assignee: HP Inc
•
Filing: 1992-08-13
•
Granted: 1993-12-28
•
Expires: 2012-08-13
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Abstract

Abstract A specific dye set, comprising Acid Yellow 23, Acid Red 52, and Acid Blue 9, yields true, vivid colors on special coated paper. This dye set, which is intended for 180 dpi thermal ink-jet printers, such as Hewlett-Packard's PaintJet® printer, is a distinct improvement over a prior art dye set.

Inventors

  • 👤 William D. Kappele

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 18:58
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 125 words
A set of thermal ink-jet inks comprising a yellow ink containing a yellow dye, a magenta ink containing a magenta dye, and a cyan ink containing a cyan dye for thermal ink-jet printers having at least 180 dpi print capability, said yellow ink having the formula ______________________________________ Acid Yellow 23 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance, ______________________________________ said magenta ink having the formula ______________________________________ Acid Red 52 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance, and ______________________________________ said cyan ink having the formula ______________________________________ Acid Blue 9 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance. ______________________________________
Claim 2
Dependent Claim 125 words
A set of thermal ink-jet inks comprising a yellow ink containing a yellow dye, a magenta ink containing a magenta dye, and a cyan ink containing a cyan dye for thermal ink-jet printers having at least 180 dpi print capability, said yellow ink having the formula ______________________________________ Acid Yellow 23 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance, ______________________________________ said magenta ink having the formula ______________________________________ Acid Red 52 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance, and ______________________________________ said cyan ink having the formula ______________________________________ Acid Blue 9 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance. ______________________________________
Claim 3
Dependent Claim 46 words
The set of thermal ink-jet inks of claim 1, further comprising a black ink containing a black dye, said black ink having the formula ______________________________________ Food Black 2 about 0.5 to 5.0 wt % diethylene glycol above 30 to about 60 wt % water balance. ______________________________________
Claim 4
Dependent Claim 102 words
The set of thermal ink-jet inks of claim 1, said yellow ink having the formula ______________________________________ Acid Yellow 23-TMA about 4 wt % diethylene glycol about 60 wt % water balance, ______________________________________ said magenta ink having the formula ______________________________________ Acid Red 52-Li about 3 wt % diethylene glycol about 60 wt % water balance, and ______________________________________ said cyan ink having the formula ______________________________________ Acid Blue 9-Na about 3 wt % diethylene glycol about 60 wt % water balance, ______________________________________ where TMA indicates the tetramethylammonium cation associated therewith, Li indicates the lithium cation associated therewith, and Na indicates the sodium cation associated therewith.
Claim 5
Dependent Claim 34 words
The set of thermal ink-jet inks of claim 3 further including a black ink having the formula ______________________________________ Food Black 2-TMA about 5 wt % diethylene glycol about 60 wt % water balance. ______________________________________
Claim 6
Independent Claim 134 words
A method for color printing using a thermal ink-jet printer having at least 180 dpi print capability, comprising printing from a set of thermal ink-jet inks comprising a yellow ink containing a yellow dye, a magenta ink containing a magenta dye, and a cyan ink containing a cyan dye, said yellow ink having the formula ______________________________________ Acid Yellow 23 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance, ______________________________________ said magenta ink having the formula ______________________________________ Acid Red 52 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance, and ______________________________________ said cyan ink having the formula ______________________________________ Acid Blue 9 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance. ______________________________________
Claim 7
Independent Claim 134 words
A method for color printing using a thermal ink-jet printer having at least 180 dpi print capability, comprising printing from a set of thermal ink-jet inks comprising a yellow ink containing a yellow dye, a magenta ink containing a magenta dye, and a cyan ink containing a cyan dye, said yellow ink having the formula ______________________________________ Acid Yellow 23 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance, ______________________________________ said magenta ink having the formula ______________________________________ Acid Red 52 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance, and ______________________________________ said cyan ink having the formula ______________________________________ Acid Blue 9 about 1 to 5 wt % diethylene glycol above 30 to about 60 wt % water balance. ______________________________________
Claim 8
Dependent Claim 50 words
The method of claim 5, wherein said set of thermal ink-jet inks further comprises a black ink which contains a black dye, said black ink having the formula ______________________________________ Food Black 2 about 0.5 to 5.0 wt % diethylene glycol above 30 to about 60 wt % water balance. ______________________________________
Claim 9
Dependent Claim 99 words
The method of claim 5, wherein said yellow ink has the formula ______________________________________ Acid Yellow 23-TMA about 4 wt % diethylene glycol about 60 wt % water balance, ______________________________________ said magenta ink has the formula ______________________________________ Acid Red 52-Li about 3 wt % diethylene glycol about 60 wt % water balance, and ______________________________________ said cyan ink has the formula ______________________________________ Acid Blue 9-Na about 3 wt % diethylene glycol about 60 wt % water balance, ______________________________________ where TMA indicates the tetramethylammonium cation associated therewith, Li indicates the lithium cation associated therewith, and Na indicates the sodium cation associated therewith.
Claim 10
Dependent Claim 30 words
The method of claim 7 further including a black ink having the formula ______________________________________ Food Black 2-TMA about 5 wt % diethylene glycol about 60 wt % water balance. ______________________________________

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-12-27 1997-06-28 1997-12-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-12-27 2001-06-28 2001-12-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-12-27 2005-06-28 2005-12-28 $7700.00 Window Closed / Lapsed

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