| 摘要 |
PURPOSE:To provide a printer capable of simultaneously performing carry and printing operation by such an arrangement wherein a type on the type belt is caused to protrude by a hammer and printing is accomplished by causing the type to roll on a sheet of paper with pressure applied thereto. CONSTITUTION:A drive gear 104 coupled with a rack tooth 110a of a rack plate 110 is moved in the direction of digit by the advance pitch of a worm shaft 109. As the result of this, the drive gear 104 is caused to roll on the pitch circumference, and a type drum 101 constructed integrally with the drive gear 104 is also caused to roll and simultaneously a current is supplied to a solenoid 111 and a type 102a is caused to protrude by a hammer roller 112, and the type is caused to roll, with pressure applied, on a sheet of printing paper placed at a position where it is brought to contact with the pitch circumference of the drive gear 104. After the drive gear 104 rolled by the amount of one tooth, the current supplied to the solenoid is cut off so that the drive gear is released from the rack plate 110, and by this, the movement of the drive gear 104 and the type drum 101 stops, and they continue to rotate for selecting a type to be printed next. |
