Active ray curable ink-jet ink composition, method for forming image, and ink-jet recording apparatus

Abstract

An active ray curable ink-jet ink composition comprising: (a) a cationic polymerizable compound, (b) a cationic photopolymerization initiator, and (c) an alkyl modified or an alkyl aralkyl modified silicone oil.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments will now be described, by way of example only, with reference to the accompanying drawings which are meant to be exemplary, not limiting, and wherein like are elements numbered alike in the several figures, in which:

FIG. 1 is a front view showing a constitution of the chief parts of the recording apparatus of this invention.

FIG. 2 is a top view showing an example of the other constitutions of the chief parts of the ink-jet recording apparatus.

FIG. 3 is a Figure showing a nozzle surface of the ink-jet recording head of the ink-jet recording apparatus of this invention.

Claims

1. An active ray curable ink-jet ink composition comprising: (a) a cationic polymerizable compound,(b) a cationic photopolymerization initiator, and(c) an alkyl modified or an alkyl aralkyl modified silicone oil.

2. The active ray curable ink-jet ink composition of claim 1, wherein the cationic polymerizable compound is (i) a compound having an oxetane ring; or(ii) an epoxy compound.

3. The active ray curable ink-jet ink composition of claim 1, an amount of the alkyl modified or the alkyl aralkyl modified silicone oil is from 0.001 to 10 weight % based on the total weight of the ink-jet ink composition.

4. The active ray curable ink-jet ink composition of claim 1, further comprising at least one pigment.

5. The active ray curable ink-jet ink composition of claim 1, wherein a surface tension of the ink-jet ink composition at 25° C. is 25-35 mN/m.

6. The active ray curable ink-jet ink composition of claim 1, wherein the ink-jet ink composition has a viscosity of 7-50 mPa·s.

7. A method for forming an image comprising the steps of: (a) ejecting an active ray curable ink-jet ink composition of claim 1 onto a recording material, and(b) irradiating active rays onto the ejected ink-jet ink composition to form an image,wherein the active rays are irradiated during 0.001-2.0 sec. after the active ray curable ink-jet ink composition is deposited.

8. An ink-jet recording apparatus employed for the method of claim 7, wherein an active ray curable ink-jet ink composition is ejected from a recording head after the active ray curable ink-jet ink composition and the recording head are heated to 35-100° C.

9. The ink-jet recording apparatus employed for the method of claim 8, wherein a nozzle surface of the recording head from which the active ray curable ink-jet ink composition is ejected is made of metal.