Gray scale electrostatic recording system and a stylus driver th

Recorders – Electric recording – Electrochemical

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

358298, G01D 1506, H04N 122

Patent

active

044159145

ABSTRACT:
An electrostatic gray scale printing system is disclosed having particular utility for producing gray scale images from signals received from a suitable data source such as a computer, telecommunications line, data storage device or the like. A unique, high voltage, pulse generating circuit is provided for producing gray scale voltage pulses between 300 and 600 volts to the individual styli making up said printing device. The circuit utilizes a conventional, low voltage, power supply and a low voltage gray scale intensity signal input to produce the required high voltage printing pulses. The circuit, per se, consists of a high voltage transistor having a relatively large inductance connected in its emitter-collector circuit path. Current flows in the transistor in response to an input voltage applied to the base of the transistor. The collector current is proportional to the value of the input signal divided by the emitter resistor. When the transistor is cut off the inductive tank circuit, including said inductor, produces a high voltage output pulse proportional to the original signal placed on the transistor base. The width of said output pulse is related to the value of the resistor in the inductive tank circuit which also controls the damping of the output pulse.

REFERENCES:
patent: 3569983 (1971-03-01), Marshall
patent: 3631509 (1971-12-01), Marshall

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Gray scale electrostatic recording system and a stylus driver th does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gray scale electrostatic recording system and a stylus driver th, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gray scale electrostatic recording system and a stylus driver th will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-161913

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.