Patent ID: 7681983

Claim:
An image forming apparatus having a print head that reciprocates along a guide rail, comprising: a carriage on which the print head is mounted, wherein the print head is supplied with ink through a tube from an ink cartridge that is arranged outside the carriage, wherein the carriage includes: an engaging portion that slidably engages the carriage with the guide rail; an urging portion that presses the guide rail against the engaging portion; and a base portion on which the urging portion is mounted, and wherein the urging portion includes: an elastic member that is in contact with the base portion at one end thereof; and a wedge-shaped member that is connected to the other end of the elastic member and urged in a direction in which the guide rail is pressed against the engaging portion by the elastic force of the elastic member; wherein the engaging portion has a first surface, and a second surface that makes an angle with the first surface, and wherein the wedge-shaped member presses the guide rail against both the first surface and second surface of the engaging portion by the elastic force of the elastic member.