Braked media transport for laser scanners

Details Braked media transport for laser scanners Braked media transport for laser scanners

1984-10-29

1986-08-26

Evans, Arthur G.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346108, 350486, 91364, G01D 1514

Patent

active

046085785

ABSTRACT:
A servo system for a braked accelerative transport in which a signal representing velocity of a carriage within the transport is compared to a first reference signal representing desired carriage velocity. The comparison yields an error signal which is used to adjust the brake of the transport. A hydraulic valve having an adjustable needle is used as the brake. A second selectable reference signal is provided so that the first reference signal can be bypassed when the carriage is reset at high velocity or is at reset. The valve is also bypassed on reset so that the adjusted brake mechanism is left intact on reset.

REFERENCES:
patent: 3541580 (1970-11-01), Saito
patent: 4202247 (1980-05-01), Hunkar et al.
patent: 4348697 (1982-09-01), Takahashi et al.
patent: 4505578 (1985-03-01), Balasubramanian

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