An ink-jet coater and a coating method for improving smoothness of a mixed part where the coating position in the previous scan overlaps the coating position in the next scan includes a robot arm configured to move a nozzle head unit by driving arms via an arm driving mechanism and a coating control unit configured to control driving of the nozzle driving mechanism and driving of the arm driving mechanism to execute coating on the coating object. The coating control unit performs coating by forming, in segmented coating surfaces formed by each scanning of the nozzle head unit, a normal coating region coated with a target coating film thickness and an overlapping coating region coated with a spray amount of the paint less than the normal coating region.

A printhead die assembly includes first and second printhead die. Each of the first and second die has a respective first surface including ink dispensing devices constructed thereon, and a respective second surface opposite the first surface. Each of the first and second die includes nozzles for the ink dispensing devices. The first and second die are positioned so that the second surface of the first die faces the second surface of the second die, and the nozzles of the first die are aligned with the nozzles of the second die.

A method may include positioning first and second printhead die within a die carrier, using a registration pin of the die carrier to align the first and second printhead die and fixing the position of the first and second printhead die within the die carrier.

A method may include positioning first and second printhead die within a die carrier, using a registration pin of the die carrier to align the first and second printhead die and fixing the position of the first and second printhead die within the die carrier.

The present application provides a coater and a coating method for enhancing the coating quality by improving smoothness of a mixed part where the coating position in the previous scan overlaps the coating position in the next scan. The coater includes a robot arm configured to move a nozzle head unit by driving arms via an arm driving mechanism and a coating control unit configured to control driving of the nozzle driving mechanism and driving of the arm driving mechanism to execute coating on the coating object; the coating control unit performs coating by forming, in segmented coating surfaces formed by each scanning of the nozzle head unit, a normal coating region coated with a target coating film thickness and an overlapping coating region coated with a spray amount of the paint less than the normal coating region; and the coating control unit performs a overlapping coating control by mixing the overlapping coating region in the previous and next scans and taking the coating film thickness of the mixed overlapping coating region as the target coating film thickness to perform coating.

A method may include positioning first and second printhead die within a die carrier, using a registration pin of the die carrier to align the first and second printhead die and fixing the position of the first and second printhead die within the die carrier.

A printing apparatus is provided that includes a print head having a nozzle array including a plurality of nozzles arranged in a first direction, and is configured to print an image on a print medium by ejecting ink while moving the print head in a second direction intersecting the first direction. The apparatus further includes a control unit for controlling the number of nozzles used for printing on the basis of a limit value of electric power that can be supplied from a power supply to the print head. The control unit can execute first control in which printing is performed using all of the nozzles of the nozzle array and second control in which printing is performed using some of the nozzles of the nozzle array. Under the second control, the control unit performs printing on an area obtained by reducing an area printable under the first control.