Patent ID: 9145018
Filing Date: 2015-09-29
Classification: B41J

Abstract:
1. A printer configured to perform printing by ejecting liquid onto a print medium which is fed in a first direction, the printer comprising: a print head unit having an ejection portion configured to eject the liquid toward the print medium; a carriage having the print head unit mounted thereon and configured to cause the ejection portion to reciprocate in a second direction orthogonal to the first direction; a guide shaft provided along the second direction and configured to support the carriage; a rail member provided along the second direction and disposed facing the guide shaft; a frame body internally housing the guide shaft and the rail member, configured to support the guide shaft on a first side in the first direction, and also configured to support the rail member on a second side being opposite to the first side in the first direction, the frame body having a side wall portion and an upper wall portion, the side wall portion having a first surface, the first surface being an external surface on the first side of the frame body and being a surface extending toward a third direction in which the ejection portion ejects the liquid, the upper wall having a second surface, the second surface being an external surface on the first side of the frame body and being a surface extending toward the first side from an end portion of the side wall portion on a side of a fourth direction, the fourth direction being a direction opposite to the third direction, and the second surface having an opening portion extending along the second direction; an object member to be detected, the object member having a pattern formed thereon, the pattern indicating a position of the carriage in the second direction, the object member having a strip shape and extending further to the first side than the first surface and further to a side of the third direction than the opening portion along the second direction; and a detection portion configured to output a detection signal based on the pattern, the detection portion being fixed to a first end portion which is an end portion on the first side of the carriage, and being provided such that the detection portion penetrates the opening portion from the side of the fourth direction with respect to the opening portion and protrudes toward the side of the third direction.