Ink jet recording method
View Patent ↗An ink jet recording method for recording an image on a recording medium using a first liquid A containing a polymerizable or crosslinkable material, and a second liquid B having a different composition from the composition of the first liquid A, the method including: applying the second liquid B, in which a compound having a difference of an inorganicity/organicity ratio estimated from a structure of compound (I/O value) of 3 or less from the polymerizable or crosslinkable material is contained in a range of 50% by mass or more, onto the same area at which the image is to be formed by the first liquid A or a wider area than the area at which the image is to be formed by the first liquid A, of the recording medium which is impermeable or slowly-permeable; jetting the first liquid A onto the recording medium where the second liquid B has been applied so that at least a droplet a1 and a droplet a2 of the first liquid A have an overlap portion; and providing activation energy within 60 seconds of impact of each droplet of the first liquid A to cause polymerization of the polymerizable material or to cause crosslinking of the crosslinkable material.
1. An ink jet recording method for recording an image on a recording medium using a first liquid A containing a polymerizable or crosslinkable material, and a second liquid B having a different composition from the composition of the first liquid A, the method comprising:
applying the second liquid B, in which a compound having a difference of an inorganicity/organicity ratio estimated from a structure of compound (I/O value) of 3 or less from the polymerizable or crosslinkable material is contained in a range of 50% by mass or more, onto the same area at which the image is to be formed by the first liquid A or a wider area than the area at which the image is to be formed by the first liquid A, of the recording medium which is impermeable or slowly-permeable;
jetting the first liquid A onto the recording medium where the second liquid B has been applied so that at least a droplet a1 and a droplet a2 of the first liquid A have an overlap portion; and
providing activation energy within 60 seconds of impact of each droplet of the first liquid A to cause polymerization of the polymerizable material or to cause crosslinking of the crosslinkable material,
wherein the viscosity at 25° C. of the first liquid A is from 5 mPa·s to 100 mPa·s, and the viscosity at 25° C. of the second liquid B is from 5 mPa·s to 100 mPa·s.
2. The ink jet recording method according to claim 1 , wherein an overlap ratio at the overlap portion is in the range of 10% to 90%.
3. The ink jet recording method according to claim 1 , wherein the second liquid B further contains a polymerization initiator.
4. The ink jet recording method according to claim 1 , wherein the content of the compound having a difference of I/O value of 3 or less is in the range of 70% to 100% based on the total mass of the liquid B.
5. The ink jet recording method according to claim 1 , wherein the compound having a difference of I/O value of 3 or less is a high-boiling point organic solvent having a boiling point higher than 100° C.
6. The ink jet recording method according to claim 1 , wherein the first liquid A further contains a colorant.
7. The ink jet recording method according to claim 1 , wherein a time interval between the finishing point of the application of the second liquid B and the starting point of the jetting of the droplet a1 is in the range of 5 μ seconds to 400 m seconds.
8. The ink jet recording method according to claim 1 , wherein the average volume of the first droplet a1 and droplet a2 is 0.1 picoliter to 100 picoliters.
9. The ink jet recording method according to claim 1 , wherein the content of the compound having a difference of I/O value of 3 or less is in the range of 80% to 100% based on the total mass of the liquid B.
10. The ink jet recording method according to claim 1 , wherein the overlap ratio at the overlap portion is 30% to 70%.
11. The ink jet recording method according to claim 1 , wherein the activation energy is provided within 30 seconds after impact of each droplet of the first liquid A.
12. The ink jet recording method according to claim 1 , wherein the activation energy is provided by irradiation of UV rays.
13. The ink jet recording method according to claim 3 , wherein the second liquid B contains the polymerization initiator so that the content of the polymerization initiator is in the range of 0.5 to 20% by mass based on the amount of the polymerizable or crosslinkable material per unit area.
14. The ink jet recording method according to claim 3 , wherein the second liquid B contains the polymerization initiator so that the content of the polymerization initiator is in the range of 3 to 10% by mass based on the amount of the polymerizable or crosslinkable material per unit area.
15. The ink jet recording method according to claim 1 , wherein the mass ratio of the second liquid B applied per droplet of the droplets a1 and a2 is in the range of 0.05 to 5 based on the mass of one droplet of the droplets a1 and a2.
16. The ink jet recording method according to claim 1 , wherein the mass ratio of the second liquid B applied per droplet of the droplets a1 and a2 is in the range of 0.1 to 1 based on the mass of one droplet of the droplets a1 and a2.
17. The ink jet recording method according to claim 1 , wherein a time interval between the finishing point of the application of the second liquid B and the starting point of the jetting of the droplet a1 is in the range of 20 μ seconds to 200 μ seconds.
18. The ink jet recording method according to claim 1 , wherein the content of the polymerizable or crosslinkable material in the first liquid A is in the range of 50 to 99.6% by mass based on the mass of the total solids in the first liquid A.
19. The ink jet recording method according to claim 1 , wherein the content of the polymerizable or crosslinkable material in the first liquid A is in the range of 80 to 99.0% by mass based on the mass of the total solids in the first liquid A.