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    • 9. 发明专利
    • ELECTROMAGNETIC DEVICE
    • JPS5634478A
    • 1981-04-06
    • JP11049279
    • 1979-08-31
    • CANON KKCANON DENSHI KK
    • ASAKURA OSAMUOOKUBO KOUZOUHASEGAWA YUUICHIMIYAGAWA HIDEAKI
    • H01F7/04B41J7/48B41J9/44H01F7/06
    • PURPOSE:To provide a compact printer of low power consumption and high reliability, by providing coils on portions of magnetic flux conducting N-pole and S- pole so that magnetic fluxes which relate to type selection and which are conducted through yokes at the time of electricity feed are reduced. CONSTITUTION:When a printing signal is applied, a motor 101 starts rotating to revolve a type wheel shaft 201 in a forward direction P through gears 104-107, 110, 203. At that time, type wheels 202 for digits are revolved together with the shaft 201 in the same direction P. When a desired-character type on the peripheral surface of the type wheel 202 is revolved to a position opposed to a platen 401, electric energy is supplied to required one of coils 216 for a short time so that the magnetic attractive forces between an armature 213 and yoke's comb teeth 2143, 2144 at the digit are eliminated, a selection claw 208 is revolved toward the type wheel shaft 201 centering a shaft 212 and the rotation of the type wheel 202 is stopped. The to-be-printed type is therby selectively located in front of the platen 401.