Patent ID: 9061433
Filing Date: 2015-06-23
Classification: B26D,B26F,G03G,Y10T

Abstract:
1. A post-processing apparatus connectable to an image forming apparatus body that forms an image on a medium on which image formation is performed, the post-processing apparatus comprising: a conveying portion that conveys a medium on which image formation is performed; and a punching apparatus that performs a punching process on the medium on which image formation is performed, the medium being conveyed by the conveying portion, wherein the punching apparatus includes: the rotation driving control portion controls the rotation driving portion so as to rotate the rotation member in a second rotation direction opposite to the first rotation direction at a rotation speed slower than a rotation speed of the rotation in the first rotation direction such that the punching blade is moved toward the punching reference position, when the reference position detection portion determines that the punching blade has moved beyond the punching reference position toward the through hole punching position, in a case where the rotation driving portion is controlled so as to stop rotating the rotation member such that the punching blade is stopped at the punching reference position, the orthogonal direction movement control portion starts, before the punching blade is returned to the punching reference position, a movement control of controlling the orthogonal direction movement portion so as to move the punching blade toward the orthogonal direction waiting position, when the punching blade position determination portion determines that the moving distance of the punching blade from the punching reference position is in the predetermined range while the rotation driving control portion controls the rotation driving portion so as to rotate the rotation member in the second rotation direction such that the punching blade is moved toward the punching reference position, the rotation driving control portion controls the rotation driving portion so as to maintain rotation of the rotation member in the second rotation direction such that the punching blade is moved toward the punching reference position, when the punching blade position determination portion determines that the moving distance of the punching blade from the punching reference position is not in the predetermined range, and the orthogonal direction movement control portion starts, before the punching blade is returned to the punching reference position, the movement control of controlling the orthogonal direction movement portion so as to move the punching blade toward the orthogonal direction waiting position, when the punching blade position determination portion determines that the moving distance of the punching blade from the punching reference position is in the predetermined range while the rotation driving control portion controls the rotation driving portion so as to maintain rotation of the rotation member in the second rotation direction.