Solenoid controlling apparatus

Details Solenoid controlling apparatus Solenoid controlling apparatus

1990-07-17

1992-06-09

Wiecking, David A.

Typewriting machines

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

Imprint by movement of record-medium against type-face

361154, B41J 950, B41J 938

Patent

active

051201429

ABSTRACT:
In a printing device employing a solenoid for driving a printing hammer, provided are switching member for ON/OFF operating electric current flowing through the solenoid coil, voltage generating member for generating voltage in accordance with the electric current, converting member for converting the generated voltage to a digital value, chopping member for comparing the converted digital value with a predetermined comparison value, while for turning on the switching member when the converted value is smaller than the predetermined comparison value and turning off the switching member when the converted value is larger than the predetermined comparison value, detecting member for detecting voltage relating to a driving operation of said solenoid, and controlling member for controlling the predetermined comparison value so as to be varied in an amount based upon the detected voltage. Thus, the current flowed through the solenoid is controlled so as not to be largely varied.

REFERENCES:
patent: 3909681 (1975-09-01), Campari et al.
patent: 4407193 (1983-10-01), Hall
patent: 4745514 (1988-05-01), Takeshima
European Search Report Appl. No. EP 90307822.8.

Affiliated with

Also associated with

Rating

Solenoid controlling apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Solenoid controlling apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solenoid controlling apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1800361