Primages Inc.

Nai Technologies, Inc.

Kenneth Colonel

Edward H Lau

Dalton C Marris

A thermal printer is provided which can operate at high speeds either as a direct thermal printer or a thermal transfer printer. The thermal printer includes a frame, a front door assembly pivotally connected to the frame and having a thermal head secured thereto. The front door assembly positions the thermal head to facilitate recording of information on a recording medium when the door is closed as well as dissipating heat generated by the thermal print head. A platen roller is positioned within the frame which conveys the recording medium between the thermal head and the platen roller. The thermal printer also provides interference shielding which maintains security of printed data. The thermal printer is also configured to allow operation in a rigorous environment.

Thermal printer

Apparatus for releasably attaching a daisy print wheel to a splined shaft of an angular drive such that the print wheel can be driven in angular rotation with substantially no backlash. The apparatus comprises a splined hub fixed to the print wheel and slidably engageable with the splined shaft and a holder mounted on the hub for movement between a locking position in which the hub is locked on the splined shaft with interference fit and a released position in which the hub with the holder thereon is slidably removable from the splined shaft together with the print wheel. The hub includes a plurality of angular segments of cantilever formation which are pressed into the spaces between the splines on the drive shaft with interference fit by the engagement of the holder in its locking position. The holder is axially movable on the hub in traveling between the locking and release positions and is not normally removable from the hub.

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Ronkonkoma, NY, United States of America

Kenneth Colonel