JPS647760A - Image reproducer - Google Patents

Abstract

PURPOSE:To designate the extent of an image to be read simply by storing conditions such as read extent, variable power ratio, paper size etc., at the time of print- outputting in a memory, and inputting a distance from the prescribed reference position on a print output paper. CONSTITUTION:From the original image size S, the paper size A, and the magnification ratio R stored in the memory 22, nY pieces of elements of a sensor 6 corresponding to a length of one milimeter on a print paper is calculated. The number of elements corresponding to the vertical length (e) of an image on a film 2 can be obtained by dividing the (e) by element arrangement pitch (a) i.e. e/a, hence, provided that the ratio R is one, the said number comes to be the vertical length C; when the magnification ratio is RA%, the said number is corresponding to CRX10<-2>, and the said number nY can be shown by an equation I. The element address (i) of a CCD 6 corresponding to the lower end of a paper comes, since the element address corresponding to the center of the paper is (k) and the vertical half length of the paper is C/2, to be i= k-CnY/2. Accordingly, the element address (g) corresponding to a distance Ymm from the lower end of the paper is shown by an equation II. In such a way, the read extent of an image is determined by designating the vertical distance from the lower end of the paper, and the read extent in the lateral direction can also be determined similarly and easily.