Dye sublimation calender

Patent metadata

Field	Value
Publication number	US-11512418-B2
Application number	US-202117373919-A
Country	US
Kind code	B2
Filing date	Jul 13, 2021
Priority date	Dec 28, 2016
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

A fixation/transfer device for control of dye waste in a dye sublimation process. The device comprises a textile inlet, a textile outlet, a heat press or calender, an endless belt for driving the textile from the textile inlet to the textile outlet through the heat press, the heat press being held at a temperature sufficient to cause sublimation of the printing dye, and a cleaning station for cleaning the endless belt, the cleaning station being located downstream of the textile outlet and upstream of the textile outlet. The feed belt may be heated at the cleaning station so that sublimation may assist cleaning.

First claim

What is claimed is:

1. A calender apparatus for fixation/transfer of images on textile, the fixation/transfer being by dye sublimation, the dye being suitable for use with textiles, the apparatus comprising:
a dyed textile inlet for input of a textile;
a textile outlet for output of said textile;
a heat press comprising a calender, the calender comprising a heated rotary textile-pressing drum;
an endless belt configured to drive said textile from said textile inlet to said textile outlet through said heat press to fix an image formed from a dye suitable for textiles, the image for fixing being carried on the textile, said heat press being held at a temperature sufficient to cause sublimation of said dye suitable for use with textiles thereby to fix said image, the heated rotary textile-pressing drum being configured to rotate with said textile; and
a cleaning station configured to clean said endless belt to remove traces of said dye suitable for textiles, said cleaning station being located downstream of said textile outlet and upstream of said textile inlet, a path of said textile from said textile inlet to said textile outlet not passing said cleaning station.

2. The calender apparatus of claim 1 , wherein said textile is in physical contact with said belt and said cleaning station is configured to clean dye residue from said belt.

3. The calender apparatus of claim 1 , wherein said cleaning station comprises a squeegee that cleans by wiping over a surface of said belt.

4. The calender apparatus of claim 1 , wherein said cleaning station comprises an applicator for applying a cleaning fluid to said belt.

5. The calender apparatus of claim 1 , wherein said belt comprises a smooth non-absorbing surface.

6. The calender apparatus of claim 1 , wherein said belt comprises an absorbing material.

7. The calender apparatus of claim 1 , comprising a heating unit at said cleaning station to cause sublimation of ink residue on said endless belt to aid with cleaning.

8. The calender apparatus of claim 1 , comprising a drum cleaning station for cleaning a surface of said drum, said cleaning unit being located downstream of said outlet point and upstream of said inlet point.

9. The calender apparatus of claim 8 , further comprising a second endless belt and a second endless belt cleaning station, said second endless belt cleaning station being located downstream of said outlet point and upstream of said inlet point.

10. The calender apparatus of claim 1 , comprising a linear platen having a length, the platen being independently heatable at different locations to form a temperature profile along said length.

11. A calender apparatus for fixation/transfer of images on textile, the fixation/transfer being by dye sublimation, the dye being suitable for use with textiles, the apparatus comprising:
a heat press comprising a calender, the calender comprising a heated rotary textile-pressing drum;
an endless belt configured to drive said textile through said heat press to fix an image formed from a dye suitable for textiles, the image for fixing being carried on the textile, said heat press being held at a temperature sufficient to cause sublimation of said dye suitable for use with textiles thereby to fix said image, the heated rotary textile-pressing drum being configured to rotate with said textile; and
a cleaning station comprising a heating unit, the cleaning unit configured to use said heating unit to cause sublimation of ink residue on said endless belt.

12. The calender apparatus of claim 11 , wherein said textile is in contact with said belt during application of said at least one dye and a cleaning station is located downstream of said textile inlet and upstream of said textile outlet to clean dye residue from said belt.

13. The calender apparatus of claim 11 , wherein said cleaning station comprises a squeegee that cleans by wiping over a surface of said belt.

14. The calender apparatus of claim 11 , wherein said cleaning station comprises a cleaning applicator for applying a cleaning fluid to said belt.

15. The calender apparatus of claim 11 , wherein said endless belt comprises a smooth non-absorbing surface.

16. The calender apparatus of claim 11 , wherein said endless belt comprises an absorbing material.

17. The calender apparatus of claim 11 , comprising a heating unit at said cleaning station to cause sublimation of ink residue on said endless belt to aid with cleaning.

18. The calender apparatus of claim 11 , wherein said heat press comprises a calender.

19. The calender apparatus of claim 18 , wherein said calender comprises a drum.

20. The calender apparatus of claim 18 , wherein said calender comprises a second endless belt.

21. A method of cleaning a belt after fixing an image using a calender and dye sublimation, comprising:
moving an endless belt to pick up a garment carrying an image on a textile, the image in wet dye, the wet dye suitable for use with textiles, to drive said textile against a heat press, the heat press comprising a rotating textile-pressing heat drum, maintaining said heat press at a temperature sufficient to induce sublimation of at least one temperature sensitive dye on said textile, thereby to fix said image on said textile;
removing said textile from said belt; and
cleaning said endless belt by heating said endless belt to induce sublimation.

Assignees

• Kornit Digital Ltd

Inventors

• Shimoni Allon
• Feldman Alon

Classifications

• D06B23/30

  Means for cleaning apparatus or machines, or parts thereof · CPC title

• B41J11/0024

  using conduction means, e.g. by using a heated platen · CPC title

• B41J3/4078

  Printing on textile · CPC title

• D06B19/0076 Primary

  by contact with a heated surface · CPC title

• B41J11/002

  Curing or drying the ink on the copy materials, e.g. by heating or irradiating · CPC title