PURPOSE: To prevent color blurring and to execute reading and copying of different places simultaneously by setting up copying elements at the same pitch as that of an optical system of each color which reads out an original.

CONSTITUTION: Normal lenses 3aW3c with fixed magnification are optically adjusted except the adjustment of magnification size, which is executed at the writing of B, G and R signals in buffer memories 7aW7c. The fitting pitch P of R, G and B three CCD line sensors 5aW5c in the subscanning direction is set up to the same pitch of the heads 10h of ink jet devices 10aW10c. Said constitution makes it possible to absorb the shift of picture drawing time, prevent color burring and execute the reading and copying different places simultaneously.