Patent ID: 9434567
Filing Date: 2016-09-06
CPC Classification: B41J,B65H

Claim Text:
1. An inkjet printer, comprising: a sheet conveyor configured to convey a sheet in a conveying direction; a printing head configured to eject ink drops on the sheet conveyed by the sheet conveyor; a first sensor which is a reflective sensor configured to output a first detection signal corresponding to a received amount of reflected light; a carriage mounting the printing head and the first sensor thereon and configured to move in a scanning direction which intersects with the conveying direction; a corrugation forming mechanism configured to form the sheet to have a corrugated shape so as to have mountain peak positions and valley bottom positions which are alternately arranged in the scanning direction at a portion facing the printing head, the sheet being deformed toward the printing head at the mountain peak positions and deformed away from the printing head at the valley bottom positions; a storage configured to store information representing a plurality of assumed mountain peak positions and a plurality of assumed valley bottom positions, the plurality of assumed mountain peak positions corresponding to positions at which the first sensor faces the mountain peak positions in the scanning direction and the plurality of assumed valley bottom positions corresponding to positions at which the first sensor faces the valley bottom positions in the scanning direction; and a controller, the controller being configured to: wherein, in the printing process: