公开(公告)号：US4000804A

公开(公告)日：1977-01-04

申请号：US655645

申请日：1976-02-06

申请人： Adriano Zaltieri

发明人： Adriano Zaltieri

IPC分类号： B41J33/34 ,  B41J33/512 ,  H02P7/68

CPC分类号： B41J33/34

摘要： An arrangement for transferring a ribbon from a feed spool to a take-up spool comprises a pair of electric motors each one connected to a corresponding spool for the rotation thereof. The motor connected to the take-up spool is supplied by a constant current generator so as to wind-up said ribbon with a minimum and substantially constant torque. The motor connected to the feed spool is supplied by a constant voltage generator so as to keep said ribbon constantly taut during the transferring thereof. A changeover device alternates the function of the two spools when the ribbon is fully wound on the take-up spool.

摘要翻译： 将带子从进料卷轴转移到卷取卷轴的装置包括一对电动机，每个电动机连接到相应的卷轴以用于其旋转。 连接到卷取卷轴的马达由恒定电流发生器提供，以便以最小和基本恒定的扭矩卷绕所述带。 连接到进料卷轴的马达由恒压发生器提供，以便在转印期间保持所述色带不断拉紧。 当色带完全缠绕在卷取卷轴上时，切换装置交替显示两个卷轴的功能。

公开(公告)号：US4255063A

公开(公告)日：1981-03-10

申请号：US920060

申请日：1978-06-28

申请人： Adriano Zaltieri ,  Giuseppe Coli

发明人： Adriano Zaltieri ,  Giuseppe Coli

IPC分类号： B41J19/78 ,  B41J19/92 ,  B41J23/32 ,  H01F7/14 ,  H02K7/065 ,  B41J19/76

CPC分类号： H02K7/065 ,  B41J19/92 ,  H01F7/145

摘要： A platen for a typewriter, is rotated intermittently by pulsing a winding to establish flux between poles of a stator and a rotor, which rotates through a fixed angle and then back to a datum position under the action of a spring. The magnetic flux also engages an electro magnetic clutch formed by the rotor and a part rotationally fast with the platen so that the platen is rotated only during the forward rotation of the rotor. The stator, rotor and said part are all coaxial with the platen and may be housed inside the platen.

摘要翻译： 用于打字机的压板通过脉冲绕组间歇地旋转，以在定子和转子的磁极之间建立磁通，其在弹簧的作用下旋转固定的角度然后回到基准位置。 磁通量还与由转子形成的电磁离合器和与压板旋转地快速的部分接合，使得压板仅在转子正向旋转期间旋转。 定子，转子和所述部分都与压板同轴并且可以容纳在压板内。