International Business Machines Corporation

Edwin L Libby

Myrl J Miller

Willie Goff, Jr

Gerald W Baumann

Randall A Maddox

Robert L Burdick

Douglas J Roberts

Image transferring apparatus for a continuously variable reduction electrostatic copier. A single fixed aperture is employed, adjacent the object plane, to:

Apparatus for the reduction of image intensity variations in a

An electrophotographic machine of the transfer type wherein a modular construction is provided including a main slide-out drawer upon which the entire paper path is mounted as well as the transfer corona. Included in the main drawer are the paper supply bins, paper feeding mechanisms, transport guides and conveyors, the transfer corona, detach means, and the fuser. The paper supply bins are mounted in individual mini-drawers separate from but located within the main drawer.

Electrophotographic document copier machine with modular paper path

The optical system disclosed is incorporated in a copying machine and has provision for changing magnification of original documents of diverse sizes while maintaining a common image plane projection and enabling the use of common reference edges at a selected reference corner for any original document that might be used and also either maintains common reference edges in the image plane or produces borders on the reduced-sized image without deliberately causing the center of the reduced image to coincide with the center of the non-reduced image. The system contemplates the combined movement of the lens element as well as one of a pair of mirrors to insure that the original document surface and the image plane remain in their fixed positions, regardless of the magnification factor chosen. The lens element is movable forwardly and reversely along the optical path as well as transversely with respect thereto.

Optical reduction system featuring the provision of borders

The optical system disclosed is incorporated in a copying machine and has provision for changing magnification of original documents of diverse sizes while maintaining a common image plane projection and enabling the use of common reference edges at a selected reference corner for any original document that might be used and also maintains common reference edges in the image plane. The system contemplates the combined movement of the lens element as well as one of a pair of mirrors to insure that the original document surface and the image plane remain in their fixed positions, regardless of the magnification factor chosen. The lens element is movable forwardly and reversely along the optical path as well as transversely with respect thereto.

Growing community of inventors

Longmont, CO, United States of America

Edwin L Libby