Driving circuit for solenoid head of a printer

Details Driving circuit for solenoid head of a printer Driving circuit for solenoid head of a printer

1990-08-07

1992-11-17

Wiecking, David A.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

4001572, B41J 230

Patent

active

051637626

ABSTRACT:
In a printing head, which is employable in a printer, having a predetermined number of printing pins respectively connected to solenoids circularly disposed along a predetermined circle, the solenoids being arranged to be connected to another predetermined number of transistor arrays respectively including third predetermined number of transistor; the improvement in that two solenoids adjacently located with each other along the predetermined circle are respectively connected to separate transistor arrays. Thus, the current flowed through the solenoids can be prevented from undesirably increasing.

REFERENCES:
patent: 4473311 (1984-09-01), Sakaida
patent: 5071269 (1991-12-01), Yamada et al.

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