Ink jet recording method and ink jet recording apparatus with bringing porous body of liquid absorbing member into contact with ink image

Patent metadata

Field	Value
Publication number	US-10759193-B2
Application number	US-201816021598-A
Country	US
Kind code	B2
Filing date	Jun 28, 2018
Priority date	Jul 4, 2017
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

An ink jet recording method of the present invention includes a step of applying a reaction liquid onto a transfer body, an ink image forming step, a liquid removing step of bringing a porous body of a liquid absorbing member into contact with the ink image on the transfer body to remove 70% by mass or more of the liquid component from the ink image, a transfer step, and a smoothing step of bringing a fixing member into contact with the ink image on the recording medium, heating and pressing the ink image at a temperature not less than the softening point of the resin to smooth the surface of the ink image, and releasing the heated and pressed ink image from the fixing member at a temperature less than the softening point of the resin.

First claim

What is claimed is:

1. An ink jet recording method comprising:
a step of applying a reaction liquid onto a transfer body;
an ink image forming step of applying, onto the transfer body, an ink containing a resin having a softening point and a liquid component to form an ink image;
a liquid removing step of bringing a porous body included in a liquid absorbing member into contact with the ink image on the transfer body to remove at least some of the liquid component from the ink image;
a transfer step of transferring the ink image from which at least some of the liquid component is removed, from the transfer body to a recording medium; and
a smoothing step of bringing a fixing member into contact with the ink image on the recording medium, heating and pressing the ink image at a temperature not less than the softening point of the resin to smooth a surface of the ink image, and releasing the heated and pressed ink image from the fixing member at a temperature less than the softening point of the resin,
wherein in the liquid removing step, a removal rate of the liquid component is 70% by mass or more.

2. The ink jet recording method according to claim 1 , wherein in the liquid removing step, the porous body included in the liquid absorbing member is brought into contact with the ink image under pressure, and the pressure is 2.9 N/cm 2 or more to 98.1 N/cm 2 or less.

3. The ink jet recording method according to claim 2 , wherein in the liquid removing step, the porous body included in the liquid absorbing member is brought into contact with the ink image under pressure, and the pressure is 14.7 N/cm 2 or more to 98.1 N/cm 2 or less.

4. The ink jet recording method according to claim 1 , wherein when the liquid removing step is regarded as a first liquid removing step, a second liquid removing step is further included after the first liquid removing step and before the smoothing step.

5. The ink jet recording method according to claim 1 , further comprising a heating step of heating the ink image after the liquid removing step.

6. The ink jet recording method according to claim 1 , wherein in the heating step, the ink image after the liquid removing step is heated by warm air or infrared light.

7. The ink jet recording method according to claim 1 , wherein in the liquid removing step, the removal rate of the liquid component is 70% by mass or more and 100% by mass or less.

8. The ink jet recording method according to claim 1 , wherein the reaction liquid includes at least one selected from the group consisting of polyvalent metal ions, cationic resins, and organic acids.

9. The ink jet recording method according to claim 1 , wherein the resin is at least one selected from the group consisting of acrylic resins and urethane resins.

10. The ink jet recording method according to claim 1 , wherein the liquid component is at least one selected from the group consisting of water and organic solvents.

11. The ink jet recording method according to claim 1 , wherein the liquid absorbing member has a belt shape.

12. The ink jet recording method according to claim 1 , wherein a surface temperature of the fixing member before contact with the recording medium is 100° C. or more to 280° C. or less.

13. The ink jet recording method according to claim 1 , wherein a surface temperature of the fixing member after the release of the recording medium is 30° C. or more to 65° C. or less.

14. The ink jet recording method according to claim 1 , wherein the smoothing step further comprises cooling the fixing member.

15. An ink jet recording method comprising:
a step of applying a reaction liquid onto a recording medium:
an ink image forming step of applying, onto the recording medium, an ink containing a resin having a softening point and a liquid component to form an ink image;
a liquid removing step of bringing a porous body included in a liquid absorbing member into contact with the ink image on the recording medium to remove at least some of the liquid component from the ink image; and
a smoothing step of bringing a fixing member into contact with the ink image from which at least some of the liquid component is removed on the recording medium, heating and pressing the ink image at a temperature not less than the softening point of the resin to smooth a surface of the ink image, and releasing the heated and pressed ink image from the fixing member at a temperature less than the softening point of the resin,
wherein in the liquid removing step, a removal rate of the liquid component is 70% by mass or more.

16. The ink jet recording method according to claim 15 , wherein the smoothing step further comprises cooling the fixing member.

17. An ink jet recording apparatus comprising:
a transfer body;
a reaction liquid applying unit configured to apply a reaction liquid onto the transfer body;
an ink image forming unit configured to apply, onto the transfer body, an ink containing a resin having a softening point and a liquid component to form an ink image;
a liquid absorbing unit including a liquid absorbing member having a porous body configured to come into contact with the ink image on the transfer body to absorb at least some of the liquid component from the ink image;
a transfer unit configured to transfer the ink image from which at least some of the liquid component is removed, from the transfer body to a recording medium; and
a fixing unit including a fixing member configured to come into contact with the ink image on the recording medium and to smooth the ink image by heat and pressure,
wherein the fixing unit includes a heating unit configured to heat the fixing member to a temperature not less than the softening point of the resin and a cooling and releasing unit configured to cool the fixing member to a temperature less than the softening point of the resin and to release the ink image from the fixing member, and
wherein the liquid absorbing unit is configured to absorb and remove such an amount of the liquid component as to give a removal rate of 70% by mass or more of the liquid component in the ink image.

18. An ink jet recording apparatus comprising:
a reaction liquid applying unit configured to apply a reaction liquid onto a recording medium;
an ink image forming unit configured to apply, onto the recording medium, an ink containing a resin having a softening point and a liquid component to form an ink image;
a liquid absorbing unit including a liquid absorbing member having a porous body configured to come into contact with the ink image on the recording medium to absorb at least some of the liquid component from the ink image; and
a fixing unit including a fixing member configured to come into contact with the ink image on the recording medium and to smooth the ink image by heat and pressure,
wherein the fixing unit includes a heating unit configured to heat the fixing member to a temperature not less than the softening point of the resin and a cooling and releasing unit configured to cool the fixing member to a temperature less than the softening point of the resin and to release the ink image from the fixing member, and
wherein the liquid absorbing unit is configured to absorb and remove such an amount of the liquid component as to give a removal rate of 70% by mass or more of the liquid component in the ink image.

Assignees

• Canon Kk

Inventors

• Goto Ryohei
• Goto Fumihiro
• Otani Takumi
• Iwasaki Yohei

Classifications

• B41J11/0024 Primary

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

• B41J2/315

  characterised by selective application of heat to a heat sensitive printing or impression-transfer material (B41J2/385, B41J2/435 take precedence) · CPC title

• B41J2/0057

  where an intermediate transfer member receives the ink before transferring it on the printing material · CPC title

• B41F31/20

  Ink-removing or collecting devices · CPC title

• B41F31/02

  Ducts, containers, supply or metering devices · CPC title