Patent ID: 6263296
Filing Date: 2001-07-17
Classification: B41L

Abstract:
In a stencil printing in which a perforated stencil sheet is wound around a circumferential surface of a printing drum to which an ink is supplied, and the ink is transferred from the printing drum to a printing sheet through the perforated stencil sheet by pressing the printing sheet and the printing drum against each other while the drum is rotated,a method for predicting a printing density comprises(a) a first step of measuring printing densities on at least two copies of print at corresponding printed portions thereof, said copies of print being obtained under different conditions of F/f, in which F is a pressing force at which the printing sheet is pressed to the drum and f is a rotation speed of the drum,(b) a second step of statistically processing said printing densities measured in the first step, in order to obtain a function of printing density and F/f value, and(c) a third step of calculating a printing density at a desired pressing force and a desired rotation speed based on the function obtained in the second step.