Recording method and recording apparatus
A recording method includes a treatment liquid attachment step, a white ink attachment step, and a non-white ink attachment step. The white ink attachment step and the non-white ink attachment step are each performed by scanning while the ink jet head is moved with respect to the recording medium in a state where a position is fixed. The white ink composition is attached to a scanning region in one scanning and, the non-white ink composition is attached to a scanning region in one scanning. Scanning in another step is performed by another scanning, and in the white ink attachment step and the non-white ink attachment step, a surface temperature of the recording medium is 35° C. or lower.
1 . A recording method comprising:
a treatment liquid attachment step of attaching a treatment liquid containing an aggregating agent to a recording medium;
a white ink attachment step of ejecting a white ink composition containing a white coloring material from an ink jet head and attaching the white ink composition to the recording medium; and
a non-white ink attachment step of ejecting a non-white ink composition containing a non-white coloring material from the ink jet head and attaching the non-white ink composition to the recording medium, wherein
the white ink composition and the non-white ink composition are aqueous inks,
the white ink attachment step and the non-white ink attachment step are each performed by scanning in which the ink composition is ejected from the ink jet head and attached to the recording medium while the ink jet head is moved with respect to the recording medium in a state where a position is fixed,
in the white ink attachment step, the white ink composition is attached to a scanning region of one scanning in one scanning,
in the non-white ink attachment step, the non-white ink composition is attached to a scanning region of one scanning in one scanning,
on the scanning region in which scanning in one of the white ink attachment step and the non-white ink attachment step is performed, scanning in another step is performed by another scanning,
in the white ink attachment step and the non-white ink attachment step, a surface temperature of the recording medium is 35° C. or lower, and
a viscosity increase when the treatment liquid and the white ink composition are mixed at a mass ratio of treatment liquid:white ink composition=1:10 in the white ink composition, and a viscosity increase when the treatment liquid and the non-white ink composition are mixed at a mass ratio of treatment liquid:non-white ink composition=1:10 In the non-white ink composition are each 5 times or more.
2 . The recording method according to claim 1 , wherein
a maximum attachment amount range of the ink composition in a step which is first performed out of the white ink attachment step and the non-white ink attachment step is 8 mg/inch 2 to 25 mg/inch 2 .
3 . The recording method according to claim 1 , wherein
the viscosity increase when the treatment liquid and the white ink composition are mixed at a mass ratio of treatment liquid:white ink composition=1:10 in the white ink composition, and the viscosity increase when the treatment liquid and the non-white ink composition are mixed at a mass ratio of treatment liquid:non-white ink composition=1:10 in the non-white ink composition are each 5 times or more and 20 times or less.
4 . The recording method according to claim 1 , wherein
a distance at which the ink jet head moves while facing the recording medium in the one scanning is 0.5 m or more.
5 . The recording method according to claim 1 , wherein
in the white ink attachment step and the non-white ink attachment step, a maximum weight range per droplet of liquid droplets of each of the white ink composition and the non-white ink composition is 0.5 to 15 ng.
6 . The recording method according to claim 1 , wherein
on the scanning region in which the scanning in one of the white ink attachment step and the non-white ink attachment step is performed, the scanning in the other step is performed without performing a transport step of transporting the recording medium.
7 . The recording method according to claim 1 , wherein
the ink jet head has a nozzle row formed of a plurality of nozzles that eject an ink composition, and a length of the nozzle row in a length direction is equal to or longer than a length of a recordable region of the recording medium in the direction.
8 . The recording method according to claim 7 , further comprising:
a transport step of transporting the recording medium after the scanning of the white ink attachment step and the scanning of the non-white ink attachment step, wherein
a transport direction of the transport step is a direction extending along an axis of a scanning direction of the scanning.
9 . The recording method according to claim 1 , wherein
the treatment liquid attachment step is performed by scanning in which the treatment liquid is ejected from the ink jet head and attached to the recording medium while the ink jet head is moved, and
in the white ink attachment step and the non-white ink attachment step, scanning in which the treatment liquid is attached is performed on the same scanning region by the same scanning as the scanning in which each ink composition is attached.
10 . The recording method according to claim 1 , wherein
the ink jet head has a nozzle density of 600 dpi or more.
11 . The recording method according to claim 1 , wherein
the recording medium is not heated by a heating mechanism for heating the recording medium provided in a member supporting the recording medium, and the recording medium is not heated by a heating mechanism for heating the recording medium from above at a location where the ink composition is attached.
12 . A recording apparatus that performs recording using the recording method according to claim 1 , comprising:
the treatment liquid;
the white ink composition;
the non-white ink composition; and
the ink jet head.