US 2009/0244157 A1 · INKJET PRINTER AND PRINTING METHOD

Abstract

An inkjet printer including an inkjet head unit having inkjet heads for ejecting UV inks, an UVLED unit having a UVLED for emitting ultraviolet light, and a control unit for controlling the inkjet head unit and the UVLED unit. The control unit controls the inkjet head unit and the UVLED unit to move in the scanning direction, controls the inkjet heads to eject UV inks, and controls the UVLED to emit ultraviolet light of a first light quantity. After that, the control unit controls the inkjet head unit and the UVLED unit to move in the direction opposite to the scanning direction and controls the UVLED to emit ultraviolet light of a second light quantity.

Claims18

Dependent claims

An inkjet printer to eject ultraviolet curable ink, said inkjet printer comprising:

ejecting means for ejecting ultraviolet curable ink to a recording medium;
ultraviolet light irradiation means for emitting ultraviolet light to the ultraviolet curable ink ejected from said ejecting means and deposited on the recording medium;
and
light quantity changing means for changing a light quantity of the ultraviolet light emitted from said ultraviolet light irradiation means to the ultraviolet curable ink,
wherein said light quantity changing means controls said ultraviolet light irradiation means to emit ultraviolet light of a first light quantity for temporarily curing the ultraviolet curable ink and, after that, controls said ultraviolet light irradiation means to emit ultraviolet light of a second light quantity for finally curing the ultraviolet curable ink.

2 more elements

A printing method for printing with ultraviolet curable ink, said printing method comprising:

an ejecting step for ejecting ultraviolet curable ink to a recording medium;
a first ultraviolet light irradiation step for setting a light quantity of ultraviolet light emitted from an ultraviolet light irradiation device to a first light quantity for temporarily curing the ultraviolet curable ink and irradiating the ultraviolet curable ink ejected at said ejecting step and deposited on the recording medium with the ultraviolet light;
and
a second ultraviolet irradiation step for setting the light quantity of ultraviolet light emitted from said ultraviolet light irradiation device to a second light quantity for finally curing the ultraviolet curable ink after said first ultraviolet irradiation step and irradiating the ultraviolet curable ink temporarily cured at said first ultraviolet irradiation step with the ultraviolet light.

1 more element

An inkjet printer to eject ultraviolet curable ink, said inkjet printer comprising:

an ejecting device configured to eject ultraviolet curable ink to a recording medium;
an ultraviolet light irradiation device configured to emit ultraviolet light to the ultraviolet curable ink ejected from said ejecting device and deposited on the recording medium;
and
a light quantity changing device configured to change a light quantity of the ultraviolet light emitted from said ultraviolet light irradiation device to the ultraviolet curable ink,
wherein said light quantity changing device is configured to control said ultraviolet light irradiation device to emit ultraviolet light of a first light quantity for temporarily curing the ultraviolet curable ink and, after that, to control said ultraviolet light irradiation device to emit ultraviolet light of a second light quantity for finally curing the ultraviolet curable ink.

2 more elements

Dependencies are inferred from the claim text.

Inkjet printer and printing method

Life of this patent

Inkjet printer and printing method

Life of this patent

Abstract

Claims18