Agfa Gevaert Nv

Willy J Palmans

Robert Theodoor Overmeer

William Constant Waterschoot

Willy Gabriel Ceuppens

Jozef Antoon Van Biesen

Frans M Umans

A unit for heat fixing xerographic images makes use of a fuser roller and a self adjusting pressure roller. The fuser roller is internally heated and it may be associated with a self adjusting cleaning roller. The preceeding elements may be combined into a unit which can be provided moreover with scraper elements and supplementary feeding rollers located downstream of the fuser and fusing rollers and which rotate at a peripheral speed exceeding that of the latter rollers.

Contact heat fusing apparatus

A xerographic developing device for depositing xerographic toner upon an image carrying medium without the use of toner carrier beads which includes an applicator roller for transferring toner from a tray towards the image carrying medium via a scraper element mounted at the exit opening of the tray. Improved regulation of the quantity of toner transferred in this manner is achieved by applying a DC-voltage potential between the applicator roller and the scraper.

Developing device for xerographic copying machines

An apparatus for recording information on a dielectric material in the form of electrostatic charge patterns is provided in which a plurality of recording electrodes are provided at one side of the dielectric material, whereas a corona device which is partially screened is situated at the other side of the dielectric material. The screen is in the form of a metallic plate provided with a slit and is kept at a constant DC voltage. An electrostatic charge is built-up at the surface of the dielectric material when the recording electrodes are not energized, and vice versa.

Growing community of inventors

Kessel, Belgium

Willy J Palmans