Water Dispersible Phase Change Ink Suitable For Use As A Photo-Mask

Patent metadata

Field	Value
Publication number	US-2016168403-A1
Application number	US-201414569678-A
Country	US
Kind code	A1
Filing date	Dec 13, 2014
Priority date	Dec 13, 2014
Publication date	Jun 16, 2016
Grant date	—

Abstract

A water dispersible phase change ink composition including a hydrophilic wax having at least one ethoxyl moiety; a low viscosity wax having at least one hydroxyl group, wherein the low viscosity wax is miscible with the hydrophilic wax; an optional stabilizer; and a colorant, wherein the colorant is selected to absorb light in a region that one wants to block. An ink jet printer stick or pellet comprising the water dispersible phase change ink composition. A process for forming a photo-imaged stencil using the water dispersible phase change ink composition.

First claim

1 . A water dispersible phase change ink composition comprising:
a hydrophilic wax having at least one ethoxyl moiety; a low viscosity wax having at least one hydroxyl group, wherein the low viscosity wax is miscible with the hydrophilic wax; an optional stabilizer; and a colorant, wherein the colorant is selected to absorb light in a region that one wants to block.

2 . The water dispersible phase change ink composition of claim 1 , wherein the colorant is a colorant selected to absorb light in the visible range.

3 . The water dispersible phase change ink composition of claim 1 , wherein the colorant is a colorant selected to absorb light in the ultra violet range.

4 . The water dispersible phase change ink composition of claim 1 , wherein the colorant is a black dye selected to absorb light in the ultra violet range.

5 . The water dispersible phase change ink composition of claim 1 , wherein the hydrophilic wax is selected from the group consisting of ethoxylated hydrocarbon wax, ethoxylated alcohol, and mixtures and combinations thereof.

6 . The water dispersible phase change ink composition of claim 1 , wherein the low viscosity wax is a wax having a viscosity of from about 1 to about 15 centipoise at a temperature in the range of from about 80° C. to about 120° C.

7 . The water dispersible phase change ink composition of claim 1 , wherein the low viscosity wax is selected from the group consisting of stearyl alcohol, behenyl alcohol, and mixtures and combinations thereof.

8 . The water dispersible phase change ink composition of claim 1 , wherein the stabilizer is present and is selected from the group consisting of aromatic amine, hindered amine, phenol, and mixtures and combinations thereof.

9 . The water dispersible phase change ink composition of claim 1 , wherein the stabilizer is an aromatic amine antioxidant.

10 . The water dispersible phase change ink composition of claim 1 , wherein the colorant is selected from the group consisting of dyes, pigments, and mixtures and combinations thereof.

11 . The water dispersible phase change ink composition of claim 1 , wherein the water dispersible phase change ink composition forms an ultra violet mask.

12 . An ink jet printer stick or pellet comprising a water dispersible phase change ink composition, wherein the phase change ink composition comprises:
a hydrophilic wax having at least one ethoxyl moiety; a low viscosity wax having at least one hydroxyl group, wherein the low viscosity wax is miscible with the hydrophilic wax; an optional stabilizer, wherein the optional stabilizer, if present, is selected from the group consisting of aromatic amine, hindered amine, phenol, and mixtures and combinations thereof; and a colorant, wherein the colorant is selected to absorb light in a region that one wants to block.

13 . The ink jet printer stick or pellet of claim 14 , wherein the colorant is a colorant selected to absorb light in the visible range or the ultra violet range.

14 . The ink jet printer stick or pellet of claim 14 , wherein the colorant is a black dye selected to absorb light in the ultra violet range.

15 . The ink jet printer stick or pellet of claim 14 , wherein the ink jet printer stick or pellet forms an ultra violet mask.

16 . The ink jet printer stick or pellet of claim 15 , wherein the hydrophilic wax is selected from the group consisting of ethoxylated hydrocarbon wax, ethoxylated alcohol, and mixtures and combinations thereof.

17 . The ink jet printer stick or pellet of claim 15 , wherein the low viscosity wax is selected from the group consisting of stearyl alcohol, behenyl alcohol, and mixtures and combinations thereof.

18 . A process comprising:
disposing a water dispersible phase change ink composition onto a photo-sensitive emulsion film that is disposed on a screen to form a mask; wherein the water dispersible phase change ink composition comprises a hydrophilic wax having at least one ethoxyl moiety; a low viscosity wax having at least one hydroxyl group, wherein the low viscosity wax is miscible with the hydrophilic wax; an optional stabilizer, and a colorant, wherein the colorant is selected to absorb light in a region that one wants to block; exposing the mask to radiation to form a stencil; and washing with water to remove the mask, leaving the photo-imaged stencil.

19 . The process of claim 18 , wherein the hydrophilic wax is selected from the group consisting of ethoxylated hydrocarbon wax, ethoxylated alcohol, and mixtures and combinations thereof.

20 . The process of claim 18 , wherein the low viscosity wax is a wax having a viscosity of from about 1 to about 15 centipoise at a temperature in the range of from about 80° C. to about 120° C.

Assignees

• Xerox Corp

Inventors

• Wu Bo
• Thomas Jr Jule W

Classifications

• G03F7/20

  Exposure; Apparatus therefor (photographic printing apparatus for making copies G03B27/00) · CPC title

• C08K5/17

  Amines; Quaternary ammonium compounds · CPC title

• G03F7/30

  Imagewise removal using liquid means · CPC title

• C09D11/328 Primary

  characterised by dyes · CPC title

• C09D11/00

  Inks · CPC title