Patent ID: 7762170
Filing Date: 2010-07-27
Classification: B26F,G03G,Y10T

Abstract:
1. A perforator configured to perforate a sheet, comprising: a first frame including a first main face having a first hole, the first frame being provided under a transport path of the sheet, wherein the first frame includes a first inclined corner extending along the first main face, the first inclined corner being configured to receive the sheet when the sheet enters the perforator; a heat insulating member disposed on and covering the first inclined corner, the heat insulating member having a lower heat conductivity than the first frame, wherein an edge portion of the heat insulating member protrudes from the first main face into the transport path of the sheet; and a blade configured to be moved into the first hole to perforate the sheet transported in the transport path, wherein the first frame includes a first side face that faces the transport path of the sheet, the first side face being perpendicular to the first main face of the first frame and perpendicular to the transport path of the sheet, and having a center portion and two end portions, wherein a width of the center portion in a vertical direction with respect to the transport path of the sheet is smaller than a width of the end portions in the vertical direction such that a bending strength of the first main face in the vertical direction is smaller than a bending strength of the first main face in a parallel direction with respect to the transport path of the sheet.