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US 6,582,501 B2Granted
Ink composition for ink-jet printers
AssigneeSamsung Electronics Co., Ltd.
InventorsSeung-min Ryu, Seung-soon Jang, Jun-hoe Cha
Life of this patent
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Abstract
An ink composition for ink-jet printers is provided which includes a chromophore, a solvent, a co-solvent, a humectant, a surfactant, a viscosity adjuster and an additive. The additive is a nitrogen-containing heterocyclic compound. This nitrogen-containing heterocyclic compound has the hydroxy groups which improve miscibility with water, thereby preventing clogging of nozzles during use. The present invention increases the affinity for dye used as a chromophore and for the hydroxy groups of paper after discharging of ink, which allows the chromophore to easily fix on the paper, thus enhancing smearfastness of the ink composition after printing.
Claims43
An ink composition, comprising:
- a solvent;
- a co-solvent;
- a humectant;
- a surfactant;
- a viscosity adjuster;
- a chromophore;
- and
- an additive of chemical formula
- where each of R1 and R2 is independently selected from the group consisting of —CH2OH, —CH2CH(OH)(CH2)n1CH3 wherein n1 is an integer from 1 to 5, —CH2CH(OH)(CH2)n2OH wherein n2 is an integer from 1 to 6, —CH2CH(OH)(CH2)n3NH2 wherein n3 is an integer from 1 to 6, wherein n4 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2O)n5CH2CH2OH wherein n5 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2NH)n6CH2CH2OH wherein n6 is an integer from 1 to 9, —CH2CH(OH)(CH2CH(OH))n7CH2CH2OH wherein n7 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(CN))n8CH2CH2OH wherein n8 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH wherein n9 is an integer from 1 to 10 or —CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH wherein n10 is an integer from 1 to 10, and m is an integer from 1 to 5;
- where x and y are integers and 0≦x+y≦8;
- and where each of R3 and R4 is independently selected from the group consisting of —H, —CH3, -CH2OH, —CH2CH2OH, —CH2CH(OH)(CH2)n1CH3 wherein n1 is an integer from 1 to 5, —CH2CH(OH)(CH2)n2OH wherein n2 is an integer from 1 to 6, —CH2CH(OH)(CH2)n3NH2 wherein n3 is an integer from 1 to 6, —CH2CH2O(CH2CH2O)n4CH2CH2OH wherein n4 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2O)n5CH2CH2OH wherein n5 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2NH)n6CH2CH2OH wherein n6 is an integer from 1 to 9, —CH2CH(OH)(CH2CH(OH))n7CH2CH2OH wherein n7 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(CN))n8CH2CH2OH wherein n8 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH wherein n9 is an integer from 1 to 10 and —CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH wherein n10 is an integer from 1 to 10, and m is an integer from 1 to 5.
8 more elements
An ink composition, comprising:
- water;
- ethanol;
- glycerine;
- polyoxyethylene ethylether;
- poly(vinyl alcohol);
- and
- 1,3-bis(hydroxymethyl)-2-imidazolidinone.
4 more elements
An ink composition, comprising:
- water;
- ethanol;
- glycerine;
- polyoxyethylene ethylether;
- poly(vinyl alcohol);
- and
- an additive of chemical formula
- where each of R1, R2, R3 and R4 is independently selected from the group consisting of —CH2CH2OH, —CH2CH(OH)CH2CH2OH, —CH2CH(OH)(CH2CH2O)2CH2CH2OH, and —CH2CH(OH)CH2CH2NH2.
5 more elements
A method of making an ink composition, comprising the steps of:
- making an initial mixture of a solvent, a viscosity adjuster, a humectant, a surfactant and an additive of chemical formula
- where each of R1 and R2 is independently selected from the group consisting of —CH2OH, —CH2CH2OH, —CH2CH(OH)(CH2)n1CH3 wherein n1 is an integer from 1 to 5, —CH2CH(OH)(CH2)n2OH wherein n2 is an integer from 1 to 6, —CH2CH(OH)(CH2)n3NH2 wherein n3 is an integer from 1 to 6, —CH2CH2O(CH2CH2O)n4CH2CH2OH wherein n4 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2O)n5CH2CH2OH wherein n5 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2NH)n6CH2CH2OH wherein n6 is an integer from 1 to 9, —CH2CH(OH)(CH2CH(OH))n7CH2CH2OH wherein n7 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(CN))n8CH2CH2OH wherein n8 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH wherein n9 is an integer from 1 to 10 or —CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH wherein n10 is an integer from 1 to 10, and m is an integer from 1 to 5;
- where x and y are integers and 0≦x+y≦8;
- and where each of R3 and R4 is independently selected from the group consisting of —H, —CH3, —CH2OH, —CH2CH2OH, —CH2CH(OH)(CH2)n1CH3 wherein n1 is an integer from 1 to 5, —CH2CH(OH)(CH2)n2OH wherein n2 is an integer from 1 to 6, —CH2CH(OH)(CH2)n3NH2 wherein n3 is an integer from 1 to 6, —CH2CH2O(CH2CH2O)n4CH2CH2OH wherein n4 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2O)n5CH2CH2OH wherein n5 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2NH)n6CH2CH2OH wherein n6 is an integer from 1 to 9, —CH2CH(OH)(CH2CH(OH))n7CH2CH2OH wherein n7 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(CN))n8CH2CH2OH wherein n8 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH wherein n9 is an integer from 1 to 10 and —CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH wherein n10 is an integer from 1 to 10, and m is an integer from 1 to 5;
- stirring said initial mixture at a temperature in the range of 50 to 80° C. until the mixture is uniform;
- then reducing the temperature of the mixture to a temperature in the range of 30 to 40° C.;
- then adding a chromophore and a co-solvent to the reduced temperature mixture and stirring to yield a resultant mixture;
- and then
- filtering the resultant mixture to yield an ink composition.
6 more elements
An ink composition, comprising:
- a solvent;
- a co-solvent;
- a humectant;
- a surfactant;
- a viscosity adjuster;
- a chromophore;
- and
- an additive of chemical formula
- where each of R1 and R2 is independently selected from the group consisting of —CH2OH, —CH2CH2OH, —CH2CH(OH)(CH2)n1CH3 wherein n1 is an integer from 1 to 5, —CH2CH(OH)(CH2)n2OH wherein n2 is an integer from 1 to 6, —CH2CH(OH)(CH2)n3NH2 wherein n3 is an integer from 1 to 6, —CH2CH2O(CH2CH2O)n4CH2CH2OH wherein n4 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2O)n5CH2CH2OH wherein n5 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2NH)n6CH2CH2OH wherein n6 is an integer from 1 to 9, —CH2CH(OH)(CH2CH(OH))n7CH2CH2OH wherein n7 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(CN))n8CH)CH2OH wherein n8 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH wherein n9 is an integer from 1 to 10 or —CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH wherein n10 is an integer from 1 to 10, and m is an integer from 1 to 5;
- where x and y are integers and;
- and where each of R3 and R4 is independently selected from the group consisting of —H, —CH3, —CH2OH, —CH2CH2OH, —CH2CH(OH)(CH2)n1CH3 wherein n1 is an integer from 1 to 5, —CH2CH(OH)(CH2)n2OH wherein n2 is an integer from 1 to 6, —CH2CH(OH)(CH2)n3NH2 wherein n3 is an integer from 1 to 6, —CH2CH2O(CH2CH2O)n4CH2CH2OH wherein n4 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2O)n5CH2CH2OH wherein n5 is an integer from 1 to 10, —CH2CH(OH)(CH2CH2NH)n6CH2CH2OH wherein n6 is an integer from 1 to 9, —CH2CH(OH)(CH2CH(OH))n7CH2CH2OH wherein n7 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(CN))n8CH2CH2OH wherein n8 is an integer from 1 to 10, —CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH wherein n9 is an integer from 1 to 10 and —CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH wherein n10 is an integer from 1 to 10, and m is an integer from 1 to 5, and at least one of R3 and R4 has a hydroxyl group.
8 more elements
Dependencies are inferred from the claim text.