Title: Recording system using carbon-paper

Abstract: A system for recording input electrical signals by positioning galvanometer pen styli relative to a chart paper device in accordance with the input signals. Each pen is mechanically linked to an optical mask. The optical mask in conjunction with an optical system provides a feedback light signal, which is converted to a feedback electrical signal for nulling the input signal. The ink application device includes structure for applying pressure directly to carbon paper, which in turn transfers the carbon or ink to the chart paper, thereby recording clear representations of the electrical signals.

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Inventors: Buckreus, Werner (Munich, DT)

Application Number: 453625
Filing Date: 1974-03-22
Publication_date: 1976-02-03
Assignee: Fritz Schwarzer, GmbH (Munich, DT)
Primary Class(es): 346/32 346/105, 346/136
Other Classes:
US Patent Ref:

3039105	Jun, 1962	Schaeder et al.	346/105.
3392402	Jul, 1968	Hartai	346/31.
3767992	Aug, 1971	Edwards et al.	318/640.

Other Refs:
Primary Examiner: Hartary, Joseph W.
Assistant Examiner:
Attorney: Berkenstock, Jr.; H. R., Nealon; William C.