Patent ID: 6026744
Filing Date: 2000-02-22
Classification: B41L

Abstract:
A stencil printer comprising an image recording section which thermally makes a printing matrix on a stencil on the basis of image information representing an image on an original, a printing drum around which the stencil is wrapped, a paper feed section which supports printing paper sheets and feeds the printing paper sheets toward the printing drum, a pressure member which is opposed to the printing drum to effect pressing of the printing paper sheets between the printing drum and the pressure member as the printing paper sheets are fed through the stencil printer, a sheet size sensor provided on the paper feed section for detecting an original sheet size of the printing paper sheets, and a current sheet size of the printing paper sheets, with an original area of the printing matrix to be made by the image recording section being determined according to the original sheet size,a storage means which is provided on the printing drum and stores information on the original area of the printing matrix, anda control system which compares the original sheet size detected by the sheet size sensor or the current sheet size if either the drum has been remounted or the printing paper sheets have been replenished with the area of the printing matrix based on information extracted from the storage means of the currently mounted drum and acts to at least one of inhibit printing and output an error signal which advises against printing when the current sheet size is smaller than the current area of the printing matrix.