Copying apparatus for sheet originals and thicker originals

A copying apparatus including mean for carrying an original to be copied;

• means for forming an electrostatic latent image in accordance with a pattern of an original carried by said carrying means;
• means for forming a developed image of the electrostatic latent image on a copy medium;
• a driving source;
• feed roller means and register roller means for feeding a copy medium one by one from a stack of the copy mediums, and for registering said copy medium with said copy medium image forming means;
• means for conveying the copy medium fed by said feeding roller means and register roller means to a discharge port along a predetermined passage;
• first clutch means for establishing a driving connection between said driving source and said feed roller means;
• second clutch means for establishing a driving connection between said driving source and said register roller means;
• and means for controlling said first clutch means to start the driving connection thereof, and for controlling said second clutch means to stop the driving connection thereof after starting the driving connection of said first clutch means wherein said control of said first and second clutch means is continued until the leading edge of said copy medium is stopped by engaging the undriven registering roller means, and for subsequently controlling said first clutch means to cease driving the feeding roller means and said second clutch means to start driving said registering roller means;
• and delay means for maintaining the driving of said registering roller means by said second clutch means for a predetermined time period after the commencement of feeding of a next successive copy medium, wherein at the conclusion of said time period said second clutch interrupts the driving of the register rollers to stop said next succeeding copy medium as its leading edge engages said undriven registering roller means.