Abstract: The present invention automatically returns a movable cutter to its home position if the recording paper jams during cutting to cut and remove the jammed part of the recording paper. The shifting of a movable cutter away from its home position by the revolution of a drive motor causes the movable cutter to cut recording paper and, after cutting the recording paper, the return of the movable cutter to its home position causes a swinging board to be released from restraint by a locking member to enable the swinging board to swing again and the rotation of a drive gear previously transmitted to a spiral shaft to be transmitted to a recording paper feed roller.

Abstract: The present invention, in order to provide a conveniently operable recording paper cutting mechanism capable, even if trouble such as recording paper jamming arises during the cutting of paper to stop a movable cutter, of automatically returning a movable cutter to its home position to cut and remove the jammed part of the recording paper, provides for a configuration in which the shifting of a movable cutter in the direction of arrow A away from its home position H by the revolution of a drive motor causes the movable cutter to cut recording paper and, after cutting the recording paper, the return of the movable cutter to its home position H causes a swinging board to be released from restraint by a locking member to enable the swinging board to swing again and the rotation of a drive gear previously transmitted to a spiral shaft to be transmitted to a recording paper feed roller.

Abstract: This invention provides a dot printer which reads a manuscript and prints on a recording medium automatically only by placing a manuscript and a recording medium. A thermal head and an image scanner are provided facing to a platen, a feeding mechanism for feeding a desired manuscript or recording medium between the platen, and the thermal head and the image scanner is provided, an identification marker is formed on the upstream side of feeding of the manuscript, and a controller for controlling the operation is provided so that the identification marker is read using the image scanner to recognize that the medium is a manuscript fed from the feeding mechanism, then, the image scanner starts to read the manuscript.