Abstract: A printing apparatus for printing on both surfaces of a chip type article comprises first and second transfer paths for transferring the chip type article, an article feed device for feeding the article to the first transfer path, a printing device for printing on the article on the first transfer path and on another article on the second transfer path, an article removing device for removing the printed article on the second transfer path, and an article reversing device for reversing upsidedown the printed article on the first transfer path and for delivering to the second transfer path.

Abstract: An apparatus for angularly positioning a rotary member such as turn table, etc. by employing two separate motors.First motor is connected to drive the rotary member in a work operation and second servo motor is connected to drive the rotary member in a servo angular positioning movement.A power transmission mechanism is connected with the first motor to rotate the rotary member in the work operation and a coupling mechanism including a single position clutch therein is connected with the second motor to rotate the rotary member in the servo movement. A first detector is provided to detect a predetermined angular reference position of the single position clutch and a second detector is disposed to detect a predetermined reference position of the rotary member and thereby allowing the single position clutch to engage. A controller is connected with the second motor and with the first and second detectors to regulate the servo operation.