Patent ID: 11926147
Assignee: ROLAND DG CORPORATION
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 9:
10. A printing device, comprising:
a support table to support a medium;
a recording head provided above the support table and including a nozzle array that includes a plurality of nozzles from which ink is capable of being ejected onto the medium supported by the support table, the nozzles being lined up in a transportation direction;
a light radiation device provided above the support table and including a light source and a case with a radiation opening through which light emitted from the light source passes, the case accommodating the light source;
a transportation mechanism to transport the medium supported by the support table in the transportation direction from an upstream side to a downstream side;
a moving mechanism to move the recording head and the light radiation device integrally in a scanning direction crossing the transportation direction as seen in a plan view; and
a controller; wherein
where the light radiation device is divided in the transportation direction into three portions including an upstream radiation portion, a middle radiation portion and a downstream radiation portion from the upstream side to the downstream side, the upstream radiation portion, the middle radiation portion and the downstream radiation portion are capable of being turned on or off independently;
the upstream radiation portion overlaps the nozzle array in the transportation direction;
no light-blocking component is provided at a border between the upstream radiation portion and the middle radiation portion or a border between the middle radiation portion and the downstream radiation portion; and
the controller is configured or programmed to include:
a path controller to control a path operation of ejecting ink from the nozzle array of the recording head onto the medium supported by the support table while moving the recoding head and the light radiation device in the scanning direction;
a transportation controller to control a transportation operation of, after the path operation, transporting the medium supported by the support table downstream in the transportation direction by a distance shorter than a length in the transportation direction of the nozzle array; and
a first light radiation controller to control the light radiation device, during the path operation, to provide an on/off pattern of turning on the upstream radiation portion, turning off the middle radiation portion, and turning on the downstream radiation portion.