Abstract: A printer for recording information on one of opposite surfaces of a recording medium, including a recording head displaceable along the one surface of the recording medium, for recording the information on the one surface, a platen device for defining a platen surface which is opposed to the recording head, a vibration device for applying vibration to the platen means and thereby vibrating the platen surface, and an actuating device for, when the recording head is displaced along the one surface of the recording medium, displacing the platen device along the other of the opposite surfaces of the recording medium in a same direction as a direction of the displacement of the recording head and in synchronism with the displacement of the recording head, so that the platen surface continues to be opposed to the recording head.

Abstract: A large format paper handling assembly has an axially stationary platen which is rotatably mounted on pivotally mounted support arms. The platen is supported on spaced frame supported front guide rollers and rear feed rollers. The off axis rear feed rollers are adapted to be manually and/or automatically line indexed to frictionally feed paper between the rear feed rollers and the platen. Hold down rollers are mounted on a bail extending between spaced paper feed release levers which are pivotally mounted on the frame about the axis of the front guide rollers and are movable away from the platen against the bias of springs. The springs acting through the hold down rollers maintain the platen in frictional engagement with its supporting front guide rollers and rear feed rollers. The pivotal movement of the paper feed release lever withdraws the hold down rollers and also acts to pivot the platen support arms to move the platen away from the front guide rollers and the rear feed rollers.