In a facsimile apparatus, a receiver receives image data transmitted from a transmission apparatus apart from the facsimile apparatus, and a converter converts binary image data representing an image density of each pixel in binary representation of black pixel or white pixel, into multi-value image...http://www.google.de/patents/US5387983?utm_source=gb-gplus-sharePatent US5387983 - Facsimile apparatus comprising converting means for converting binary image data into multi-value image data and image processing apparatus judging pseudo half-tone image
