HJ proofing machine is used for rotogravure printing sample making, it inherited the economical and practical advantages of Japanese proofing machine , on this basis, the movement manner has changed from needle linear bearing to linear lead rail, thereby , resolve part of Japanese machine , especially it solves the problem of internal cartridge both sides advance and retreat can’t synchronous. Electric element have improved , it makes YCJ proofing machine operate get easier, more efficient.