Minnesota Mining and Manufacturing Company

3m Innovative Properties Company

Michael J Petrich

Paul J Wang

Hsin-hsin Chou

Prabhakara Satyauolu Rao

Chester A Bacon, Jr

Valdis Mikelsons

Wu-Shyong Li

Gaye K Lehman

Stewart H Corn

John F Eisele

Bradley R Ray

Gregory L Zwaldo

Thomas J Staiger

Timothy S Skogland

Michael G Baier

Richard H Olson

Thomas G Cheesebrow

Francis A Wadzinski

James E Guither

A transfer article, a retroreflective article and methods of making the same. The transfer article can include an overlay. The retroreflective article can include an optical layer and an overlay. The optical layer can include a front surface and a rear surface, and can include retroreflective optical elements. The overlay can include a front surface and a rear surface adapted to be coupled to the front surface of a substrate, such as the optical layer. The overlay can further include a graphic, such that the graphic is buried with respect to the front surface of the overlay. A method of making the retroreflective article can include applying a graphic to the rear surface of the overlay, and coupling the overlay bearing the graphic to the front surface of a substrate, such as the optical layer.

Protective overlay bearing a graphic and retroreflective articles comprising the overlay

An electrographic imaging process is described in which electrostatic images are toned in sequence to form a multicolor intermediate image on a temporary dielectric receptor. The intermediate image is then transferred to a permanent receptor. Certain relative properties of the toner and the intermediate image, such as surface energy, T.sub.g, work of adhesion, and complex dynamic viscosity, have been found to be important to the production of good final images.

Toner developed electrostatic imaging process for outdoor signs

A method and apparatus for the transfer of images from a donor surface to a receptor utilizing heated pressure rolls to cause transfer to the image materials to the receptor.

Image transfer apparatus and method

Growing community of inventors

Lake Elmo, MN, United States of America

Michael J Petrich