Abstract: An electrically operated data recorder of generally upstanding configuration, bias hinged near the bottom, a gate or side section permitting swinging movement of the hinged section between an open and a closed position. The hinged section serves as a bed of the machine against which a roller platen is designed to act during imprinting of a form from an embossed credit card placed on the bed. The gate is manually moved to the closed position and latched, which energizes an electric motor, setting the roller platen in motion to effect an imprinting operation. When the roller platen reaches the end of the printing stroke, the gate opens, the motor shuts off and is disconnected from driving attachment with the platen moving means. The released roller platen and its moving means are rapidly returned to home position by a spring, and the driving attachment is then reestablished to ready the device for a subsequent operation.

Abstract: An impression cylinder is adapted to be disengaged from a plate cylinder after an image area of printing plate attached thereon has passed through the contact point where the cylinders abut each other, but before the trailing end of an object that is printed will pass through said contact point. The disengagement as well as the engagement of said cylinders are controlled by means of a mechanism comprising scale disks each of which has an adjustable angle index and is driven to rotate synchronously with the plate cylinder.

Abstract: A roller platen imprinter is provided with means for selectively raising and lowering the roller platen for the imprinting and return strokes. The said means includes regions on the platen shaft of different sectional dimensions, together with cam means for axially shifting the support position of the shaft between the portion having the large sectional dimension and the portion having the smaller sectional dimension to selectively raise and lower the platen.