Arrangement for guiding and shifting a carriage of an office mac

Details Arrangement for guiding and shifting a carriage of an office mac Arrangement for guiding and shifting a carriage of an office mac

1985-10-15

1987-03-17

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

74DIG10, 358 42, 358293, 358294, H04N 110

Patent

active

046512292

ABSTRACT:
The carriage of a digital document reader is shifted by means of a pair of worms rotatable in the frame and engaging two nuts borne by the carriage. The worms are rotated simultaneously, e.g. by a single stepping motor and a toothed belt engaging a pulley or by two separate stepping motors. For the purpose of reducing inertia, each worm is formed together with the driving pulley by moulding a layer of plastics material on a metal core tube which is formed with a shallow groove of coarse pitch to anchor the plastics layer. Each nut, also of plastics material, is formed with a series of axial notches which define an equal number of elastic sectors which allow any play on the worm due to wear to be taken up.

REFERENCES:
patent: 2873340 (1959-02-01), Bourns
patent: 3021721 (1962-02-01), Hooven
patent: 3534626 (1970-10-01), Elliott
patent: 4268870 (1981-05-01), Kitamura
patent: 4321627 (1982-03-01), Hooker

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