Optical system for copier

Details Optical system for copier Optical system for copier

1988-01-11

1989-08-08

Arnold, Bruce Y.

Photocopying

Contact printing

Light boxes

350247, 350252, 355 57, 355 58, G02B 704, G03B 2736

Patent

active

048546720

ABSTRACT:
An optical system for a copier includes a lens and mirrors which are movable simultaneously such that an image of an original can be projected on a recording medium at a selected magnification. A cylindrical cam is rotated by a motor which also moves the lens and the cylindrical cam has a guide piece formed on its side surface such that a holder for the mirrors is driven by the rotation of the cam in such a way that the desired magnification is achieved. The holder has two rollers sandwiching the guide piece and compressed against its side surfaces by a spring such that the mirrors can be accurately moved in coordination with the motion of the lens according to the selected magnification.

REFERENCES:
patent: 4397544 (1983-08-01), Yajima et al.
patent: 4459017 (1984-07-01), Miura
patent: 4571064 (1986-02-01), Hayashi et al.
patent: 4580891 (1986-04-01), Fukunaga et al.
patent: 4614424 (1986-09-01), Endo et al.

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