Method of forming original image and additional image, and apparatus for performing same

摘要

In an electronic copying machine, a picture on an original is optically scanned by an optical system including a first carriage provided with an exposure lamp. An image obtained by the optical system is formed on the surface of a tubular-shaped photoconductive drum rotating in a predetermined direction. Additional pictorial information such as a date or a telephone number, which is not included on the original picture, is written at a desired location on the original image. Such additional information is entered into the copying machine from an operational panel of the machine. The light from the optical system led to the drum is partially shut off by a shutter. A character generator generates pattern data corresponding to the entered additional information, the pattern data being written in at the location on the drum surface which is shielded from the incident light by the shutter. A write unit is used for the writing of the pattern data. The original image and the pattern data formed onto the drum surface are developed and transferred on a recording paper.