Dover Europe Sarl

Markem-imaje Industries Limited

Jonathan Michael Gloag

Paul Christopher Roberts

Simon Starkey

Phillip Lakin

Philip Lakin

Systems and apparatus relating to motor control (e.g., for thermal transfer printing) include, according to at least one implementation, a motor control system including: a position controller to receive a demanded position (P) input for controlling a motor; a torque controller coupled with the position controller, the torque controller to receive a torque bias (T) input for controlling the motor; and a feedback circuit coupled with the torque controller and the position controller; wherein the feedback circuit is configured and arranged to combine an output from the position controller, the output being generated based on the demanded position (P) input, with the torque bias (T) input to generate a torque demand (T) input to the torque controller.

Motor control system

A motor control system includes a motor having an associated rotary position encoder, and a controller for controlling the operation of the motor, wherein the motor is switchable between a position control mode and a torque control mode.

A method of controlling tension in a tape, wherein the tape is transferable between a first spool and a second spool by a tape drive, the tape drive having a motor control system which includes two DC motors and a controller for controlling the operation of the motors, the tape drive also having two spool supports, each of which is suitable for supporting a spool of tape, and each of which is driven by a respective one of the motors, the method including only one tension setting step during a printing operation.

Tape drive and method of operation of a tape drive

A printing apparatus including a tape drive for transferring a tape carrying a marking medium, and a printhead which is operable to transfer marking medium from such a tape to print an image, the tape drive including a pair of tape spool supports, upon one of which a supply spool is mountable and upon a second one of which a take up spool is mountable, each tape spool support being drivable by a respective motor, the tape drive further including a controller to control each of the motors, wherein the tape drive is operable to position a tape adjacent the printhead such that a spacing between adjacent portions of tape from which ink is removed in successive printing operations is less than 0.5 mm.

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Cambridgeshire, United Kingdom

Jonathan Michael Gloag