Typewriting machines – Including type-set-assemblage mounted on carrier and... – Imprint by movement of record-medium against type-face
Patent
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
101 9329, 361153, B41J 938, B41J 950
Patent
active
051201437
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, another chopping member for alternatively turning the switching member in another predetermined interval shorter than the predetermined interval, when the set value becomes similar to the comparison value, during said predetermined interval. Thus, the current deviation at each of the solenoid driving period are controlled to be limited in the desired range.
REFERENCES:
patent: 3909681 (1975-09-01), Campari et al.
patent: 4262592 (1981-04-01), Araki
patent: 4546403 (1983-10-01), Nielsen
patent: 4605983 (1986-08-01), Harvey
patent: 4667117 (1987-05-01), Nebgen
patent: 4823825 (1989-04-01), Buchl
patent: 4922878 (1990-05-01), Shinogle
Communication dated Nov. 14, 1990, European Search Report EP 90307821.0.
Annex to the European Search Report Abstract.
Fujiwara Takashi
Matsubayashi Masayuki
Brother Kogyo Kabushiki Kaisha
Kelley Steven S.
Wiecking David A.
LandOfFree
Solenoid energization current 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 energization current controlling apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solenoid energization current controlling apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1800366