Patent ID: 7862247

Claim:
A printer, comprising: a platen roller for conveying a recording sheet, a print head arranged opposite the platen roller, a drive unit for rotating the platen roller, and a main frame, including a pair of side walls that rotatably support the platen roller, wherein the drive unit includes a motor for outputting a rotational force, idler gears for transmitting the rotational force outputted by the motor to the platen roller, and a gear fitting member integrally formed with gear support shafts that support the idler gears; the motor and idler gears are capable of being mounted in the main frame while attached to the gear fitting member; and a drive gear of the motor and the idler gears are stored in a space defined by the gear fitting member and one of the side walls of the main frame; wherein the motor is attached through a flange member to the gear fitting member, and an engagement groove that is fitted in the distal end of one of the gear support shafts is formed in the flange member.