An ink jet composition of the present disclosure includes: water; a polyester resin having sulfo groups; a colorant; and a high molecular weight dispersant having anionic groups, the colorant is contained in particles formed from a material containing the polyester resin, and a rate X1 [percent on molar basis] of the sulfo groups to all constituent monomers of the polyester resin is lower than a rate X2 [percent on molar basis] of the anionic groups to all constituent monomers of the high molecular weight dispersant.

An ink jet composition of the present disclosure includes: water; a polyester resin having sulfo groups; a colorant; and a high molecular weight dispersant having anionic groups, the colorant is contained in particles formed from a material containing the polyester resin, and a rate X1 [percent on molar basis] of the sulfo groups to all constituent monomers of the polyester resin is lower than a rate X2 [percent on molar basis] of the anionic groups to all constituent monomers of the high molecular weight dispersant.

The disclosure optimizes suction force. An inkjet printing apparatus (1) includes a suction table (2) having a placement surface (21a) for the medium (M); a blower (52) that generates a suction force on the placement surface (21a); and a control device (55) that controls a suction force generated by the blower (52). The control device (55) includes a switcher (553) that switches the suction force to generate, where when the medium (M) is placed on the placement surface (21a), the switcher (553) drives the blower (52) at a first output level to generate a first suction force, and suctions the medium (M) placed on the placement surface (21a). Thereafter, the blower (52) is driven at the second output level lower than the first output level to generate the second suction force weaker than the first suction force, thereby suctioning the medium M placed on the placement surface (21a).

The disclosure optimizes suction force. An inkjet printing apparatus (1) includes a suction table (2) having a placement surface (21a) for the medium (M); a blower (52) that generates a suction force on the placement surface (21a); and a control device (55) that controls a suction force generated by the blower (52). The control device (55) includes a switcher (553) that switches the suction force to generate, where when the medium (M) is placed on the placement surface (21a), the switcher (553) drives the blower (52) at a first output level to generate a first suction force, and suctions the medium (M) placed on the placement surface (21a). Thereafter, the blower (52) is driven at the second output level lower than the first output level to generate the second suction force weaker than the first suction force, thereby suctioning the medium M placed on the placement surface (21a).

When a disconnection detecting circuit detects failure, a controller of a temperature controller manipulates a duty ratio to distribute the duty ratio to normal heating rollers. Since the amount of heat decreased by failure of a heating roller can be compensated for by the other heating rollers, no defective drying will occur. It is not necessary to stop a printing process immediately when the disconnection detecting circuit detects failure, but a maintenance operation can be carried out after fully securing a preparation time for maintenance. The quick maintenance can be performed to restrain downtime of the printing apparatus.

An actinic radiation-curable inkjet ink according to the present invention contains an actinic radiation polymerizable compound and a linear styrene (meth)acrylic acid ester copolymer dissolved therein. The styrene (meth)acrylic acid ester copolymer has a softening point of 30 to 120° C., and a content of the styrene (meth)acrylic acid ester copolymer is 1 to 50 wt % based on a total mass of the actinic radiation-curable inkjet ink.

An actinic radiation-curable inkjet ink according to the present invention contains an actinic radiation polymerizable compound and a linear styrene (meth)acrylic acid ester copolymer dissolved therein. The styrene (meth)acrylic acid ester copolymer has a softening point of 30 to 120° C., and a content of the styrene (meth)acrylic acid ester copolymer is 1 to 50 wt % based on a total mass of the actinic radiation-curable inkjet ink.

An image is formed on a transfer medium comprising a hydrophilic tackifier. Any portion of the image that is dimensionally insufficient to permanently adhere the image to the receiver substrate is determined, and a colorless liquid ink comprising water is applied to cover and surround the portion of the image that is dimensionally insufficient to permanently adhere the image to the receiver substrate. When heat is applied to the image to transfer the image layer to a receiver substrate, water in the image layer swells the image layer and the hydrophilic tackifier becomes sufficiently tacky to permanently adhere the image to the receiver substrate.

This disclosure describes substrate(s) formed with a three-dimensional (3D) feature thereon, and method(s) of printing the same. One method includes identifying a plurality of locations on a substrate surface where the three-dimensional feature will be formed, determining a height value of the three-dimensional feature at each location, assigning a grayscale value to each location based on the height value, and applying ink to the substrate surface at each location according to the assigned grayscale value.

An ink contains water, Pigment Red 269, a compound represented by the following Chemical formula (1), and at least one of a silicone compound and an acetylene glycol compound, where the proportion of the compound represented by the following Chemical formula (1) to the Pigment Red 269 is 2.0 percent by mass or less: ##STR00001##