The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 1980
Filed:
Jun. 14, 1979
Shozo Shimomura, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An aperture-controlling device in a variable-scale photocopying machine having an optical system unit which is movable to vary the scale of the photocopy relative to the original comprises an aperture-adjusting member for adjusting the width of an exposure light beam projected on a photosensitive drum, a tensioned, flexible cord connected at one end to the aperture-adjusting member, and a member following movements of the optical system unit to displace the cord at a point thereof substantially perpendicularly to its longitudinal direction thereby to actuate the aperture-adjusting member and adjust the exposure light beam width. The other end of the cord is connected to an exposure member which is adjustably movable to move the cord in forward and return movements substantially in the longitudinal direction thereof thereby to adjust the exposure light beam width independently of the adjustment thereof due to scale-varying movement of the optical system unit.