Patent ID: 6997623

Claim:
A printer comprising: a body frame; a print head provided on the body frame; a cover frame provided on the body frame movable between an open position and a closed position; a lock lever rotatably provided to lock an operation for opening and closing the cover frame when the cover frame is closed; a platen assembly provided on the cover frame and including a platen opposed to the print head with a predetermined gap when the cover frame is closed and including at least one side plate on a corresponding at least one side of the platen; a first positioning mechanism for positioning the platen with respect to the print head when the cover frame is closed and for restricting a change in a position of the platen to a rotation around a first positioning fulcrum, wherein both the lock lever and the at least one side plate engage the first positioning fulcrum when the cover frame is closed; a paper feed roller provided on one of the body frame and the cover frame; a paper press roller provided on the other of the body frame and the cover frame; and a spring urging the paper press roller against the paper feed roller and keeping the cover frame in the closed position.