Patent ID: 8648890

Claim:
A head pressurizing force adjusting device, comprising: a plurality of cams having different radiuses; an arm configured to contact with the cams and be rotated with rotation of the cams; a head which is opposed to a platen with a recording medium conveyance path interposed between the head and the platen; a head support member configured to bring the head into contact with the platen when the arm is rotated by a radius having a first length of the cams, brings the head into contact with the platen with a contact pressure weaker than a contact pressure when the arm is rotated by the radius having the first length, with the head support member being separated from the arm as the arm is displaced in the opposite direction to the platen when the arm is rotated by a radius having a second length of the cams, and brings the head into contact with the platen with a contact pressure weaker than a contact pressure when the arm is rotated by the radius having the second length, with the arm being displaced in such a manner that the head is separated from the platen when the arm is rotated by a radius having a third length of the cams; a first elastic member configured to bias the arm toward the head support member; and a second elastic member configured to bias the head support member toward the platen.