Coulter Systems Corporation

Robert M Rose

Manfred R Kuehnle

John S Ballas

George J Perry

Apparatus and a method are disclosed that can be selectively operated with equal advantage to strip sheet material from either the top or the bottom of a stack. A translatable member having a generally planar surface formed of an electrically insulative material is disposed proximate to either the top or bottom of a stack of sheet material. A pair of electrodes in the form of an electronic grid is secured to the planar surface. A DC voltage is applied to the electrodes selectively to effect a highly intense electric field only close to the surface of the member. The intensity of the electric field can be varied in predetermined relation to the applied DC voltage so as to determine the number of sheets simultaneously removed from the stack. The electric field exerts an attractive force only on the end-most sheet or sheets of the stack so that said end-most sheet or sheets only will be stripped from the stack.

Electro-static sheet feeding method and apparatus

An electrophotographic method and apparatus for recording micrographic images as high resolution positive or reversal transparencies. Plural planar reusable electrophotographic plates are mounted for stepwise movement sequentially along a path for a cycle of successive operations, each plate being sucessively sequentially charged, exposed to a projected micrographics image to form a latent charge image thereof, said charge image toned, the toned image dried and contact transferred under application of heat and pressure by lamination to a transparent substrate, the lamination separated and the plate cleaned and discharged subsequent to separation for reuse. The transparency carrying the micrographics image embedded therein is mounted on a suitable holder. The apparatus includes a rotor for mounting the plates about its circumference and a framework for mounting the functional stations positioned about the rotor circumference in operative condition relative the plates mounted on said rotor. A stepping motor or other incremental-type drive drives the rotor in a programmed movement. The framework and rotor are surrounded by a light-tight housing. A suitable aperture is provided in the housing to enable an exterior projector to direct a micrographics image to the charged photoconductive surface of the plate. A transfer station includes feed, guide and storage as a self contained unit, including both heating and pressure units for laminating the plate carryng the toner image and the transparent substrate.

Growing community of inventors

Sudbury, MA, United States of America

Robert M Rose