Character print wheel with drive elements

Details Character print wheel with drive elements Character print wheel with drive elements

B - Operations, Transporting

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J

197/78

B41J 5/08 (2006.01) B41J 1/24 (2006.01) B41J 29/38 (2006.01) H02K 37/02 (2006.01) H02K 37/08 (2006.01)

Patent

CA 1121751

ABSTRACT OF THE DISCLOSURE A print wheel comprising a plurality of character elements for use in a serial impact printer such as a typewriter is directly attached to a rotor of a high performance rotary stepper motor. The rotor which is charact- erized by a high force-to-mass ratio includes a plurality of circumferentially spaced magnetic drive elements which are integrally formed with the rotor hub which also supports the print wheel. In one embodiment, the stator of the rotary motor forms an axial air gap between an active stator portion and inactive stator portion, and the rotor and print wheel are removably mounted in the air gap. In another embodiment, the stator of the rotary motor forms a radial air gap between the active stator portion and the inactive stator portion.

303683

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