Home position detecting apparatus for a print wheel

Details Home position detecting apparatus for a print wheel Home position detecting apparatus for a print wheel

1986-01-21

1988-10-11

Wiecking, David A.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Including type-faces movable relative to type-face-carrier

400163, B41J 130

Patent

active

047767138

ABSTRACT:
A home position detecting apparatus includes a detector to generate a detection signal when the home position of a print wheel is detected and a stepping motor to rotate the print wheel in response to a drive signal. This home position detecting apparatus further includes a control circuit which gives the drive signal having a specific phase to the stepping motor in response to the detection signal from the detector.

REFERENCES:
patent: 3574326 (1971-04-01), Koehn
patent: 4118129 (1978-10-01), Grudherr
patent: 4129813 (1978-12-01), Hunts et al.
patent: 4214837 (1980-07-01), Bacher
patent: 4226546 (1980-10-01), Hoffman
patent: 4315198 (1982-02-01), Lin et al.
patent: 4398837 (1983-08-01), Torii et al.
patent: 4622505 (1986-11-01), Okabayashi et al.
J. A. Barnett et al., "Stepping-Motor Step Control"; IBM Tech. Disc. Bull.; vol. 19, No. 8, pp. 2974-2975; Jan. 1977.

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