Arrangement for positioning a pen in a recording device

Details Arrangement for positioning a pen in a recording device Arrangement for positioning a pen in a recording device

1996-10-24

1998-06-09

Le, N.

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347 14, G01D 900, B41J 2938

Patent

active

057642443

ABSTRACT:
The present invention is embodied as an arrangement for positioning a pen in a device that records the time profile of a measurement signal which can be connected to the device. The arrangement provides high mapping accuracy of the measurement signal onto the recording signal at a low cost and with DC isolation between the measurement signal and drive means of the pen. The arrangement uses a control loop that has a pulse width modulator whose output is DC-decoupled to a signal converter that provides the drive signal for the motor that moves the pen.

REFERENCES:
patent: 4893066 (1990-01-01), Stewart et al.
patent: 5455609 (1995-10-01), Gast et al.
patent: 5513114 (1996-04-01), Matsumoto
patent: 5619242 (1997-04-01), Haneda et al.
Manfred Stern, Hans-Peter Mansshardt, "Servoantriebe im Umbruch", pp. 58-66, Elektronik, 21/1994-German publication.
Author unknown, "Pulsmodulation", pp. 91-94, Funkschau, 1979, Heft 2-German publication.

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