Patent ID: 9676204
Date: 2017-06-13
CPC Classifications: B41J

Claim:
1. A printer comprising: a casing formed with an opening; a platen roller provided in the casing and configured to convey a sheet, the platen roller having an axis extending in an axial direction; a thermal line head provided in the casing at a position in confrontation with the platen roller to provide a confronting portion between the thermal line head and the platen roller; a guide member provided in the casing and providing an inlet passage that guides the sheet inserted through the opening toward the confronting portion, the guide member having a surface facing the inlet passage, and comprising: an optical sensor provided in the casing at a position in confrontation with the inlet passage, the optical sensor being configured to optically detect the sheet inserted through the opening and guided by the guide member; a controller configured to control the platen roller and the thermal line head based on a result of sheet detection by the optical sensor; and a light shielding member provided in the casing and protruding toward the inlet passage at a position closer to the opening than the optical sensor to the opening, the light shielding member having a protruding end in intimate contact with the flat surface portion.