Abstract: A deviation correcting system for a scanner including a central processing unit producing a control signal for reading out a correcting program for correcting a scanning deviation, and a test pattern, for printing the test pattern, for scanning the printed test pattern, and then for correcting a scanning deviation; a print driver producing a control signal for printing the test pattern produced from the central processing unit, feeding the test pattern back to a scanning position; a printing unit printing the test pattern and then feeding the test pattern back to the scanning position upon application of the control signal from the print driver; an image processing unit producing a control signal for scanning the test pattern upon application of the control signal from the central processing unit; and a shuttle scanner module scanning the test pattern and producing image data upon application of the control signal from the image processing unit.

Abstract: A method of recognizing a printing region, including the steps of scanning a first block of a document divided into a plurality of blocks; confirming a point of converting black data at a starting point into white data; detecting a point of starting white data of predetermined lines continuously input within a single block; and setting as a scanning starting point a value obtained by subtracting the white data starting point from the number of dots corresponding to a resolution and then adding 1 thereto.