Method and structure for assembling a scanning unit in a positio

Details Method and structure for assembling a scanning unit in a positio Method and structure for assembling a scanning unit in a positio

1997-11-04

1999-12-14

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

33707, G01D 534

Patent

active

060021268

ABSTRACT:
The spacing distance D between a scale and a scanner element of a scanner unit is adjusted simply through the use of a positioning element which is part of the scanning unit. The scanner unit has a mounting element on which the scanner element is supported. The scanner element is displaceable perpendicularly to a surface of the scale from a first reference position to a second reference position. A screw is used to actuate for the displacement and the reference positions are predetermined by stop faces of the screw and stop faces of the mounting element.

REFERENCES:
patent: 4095903 (1978-06-01), Feichtinger
patent: 4663851 (1987-05-01), Feichtinger
patent: 4737698 (1988-04-01), McMullin et al.
patent: 4794250 (1988-12-01), Togami
patent: 5103917 (1992-04-01), Moore

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