mode is changed over to another mode every time the key 370 is turned on for example when the mode selection key is depressed in the automatic paper selection mode lamp lll on the lamp lll is turned off the lamp l12 indicating the next automatic magnification selection mode is turned on and the corresponding flag is set similarly the modes are changed one after another the check of step 2224 as to the edition mode is done by detecting the document edition mode or copy edition mode selected by the edition selection key 361 finally the mode selected is transferred to the first cpu 201 in step 2234 the step 2209 of fig2 is shown as a subroutine in fig2 in this routine a combination of original and copy is selected by the keys 363 to 369 in the center of the second operation panel steps 2235 to 2245 are steps for selecting a kind of original when one of the keys 362 to 365 for specifying one single faced original two single faced originals double faced original and book original is depressed the corresponding one of the lamps l3 to l6 is turned on with the others off similarly steps 2247 2258 are steps for selecting a kind of copy when one of the keys 366 to 369 for one single faced copy two single faced copies double faced copy and composite copy is depressed the corresponding one of the lamps l7 to l10 is turned on with the other lamps off the original and copy modes selected are forwarded to the first cpu 201 in step 2259 fig2 shows a subroutine.