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US 8,784,508 B2Granted
Fabric pretreatment for inkjet printing
AssigneeE. I. Du Pont de Nemours and Company
InventorScott W. Ellis
Life of this patent
Estimating the term…
Abstract
This invention pertains to a method of inkjet printing on fabric, comprising the steps of pretreatment, printing with a white underprint of substantially the same shape as the colored image and printing an image on the fabric. The preferred digitally printed inks are pigmented inks.
Claims27
A method of digitally printing a colored image on a textile comprising the steps of:
- (a) pretreating the textile with a pretreatment solution consisting of an aqueous multivalent cationic salt solution,
- (b) digitally printing the pretreated textile with an aqueous white pigmented ink jet ink in at least a portion of the area of the printed colored image to be applied thereover, where the white printed area is substantially the same shape as the printed colored image to be applied thereover, and the amount of white ink used to print the white printed area is not uniform and varies in intensity from greater than 0% to 100% to provide a white underlayer that is not a uniform opaque masking layer,
- c) digitally printing the colored image on the white ink using one or more aqueous colored ink jet inks;
- where the time interval between the printing of the white ink and printing of the colored image is less than 10 minutes,
- where the white printed area is not cured or dried before the colored image is printed and the one or more aqueous colored inkjet inks is printed on the white printed area in a wet-on printing process.
2 more elements
The method of c aim 12, wherein the pigmented ink set further comprises a black pigmented inkjet ink.
A method of digitally printing a colored image on a textile comprising the steps of:
- (a) pretreating the textile with a pretreatment solution consisting of an aqueous multivalent cationic salt solution and a nonionic latex polymer,
- (b) digitally printing the pretreated textile with an aqueous white pigmented ink jet ink in at least a portion of the area of the printed colored image to be applied thereover, where the white printed area is substantially the same shape as the printed colored image to be applied thereover, and the amount of white ink used to print the white printed area is not uniform and varies in intensity from greater than 0% to 100% to provide a white underlayer that is not a uniform opaque masking layer,
- c) digitally printing the colored image on the white ink using one or more aqueous colored ink jet inks;
- where the time interval between the printing of the white ink and the printing of the colored image is less than 10 minutes,
- where the white printed area is not cured or dried before the colored image is printed and the one or more aqueous colored inkjet inks is printed on the white printed area in a wet-on-wet printing process.
2 more elements
Dependencies are inferred from the claim text.