Minnesota Mining and Manufacturing Company

3m Innovative Properties Company

Penumbra Foundation

Stephen W Mohn

William Keith Leonard

James C Breister

Stanley C Erickson

David W Meitz

Timothy J Edman

Paul DeRoussel

Eric Rosenthal

Morgan Post

Eric Taubman

Geoffrey Berliner

Gregory H Van Erem

Thomas I Bradshaw

Edmund J Ring

Heinrich Bantli

Phillip D Schiller

Philip D Schiller

P Daniel Schiller

A photographic film is formed by combining panchromatic black and white emulsion with a color filter array to produce a full color image using only black and white film and processing.

Photographic color image using black and white emulsion

Photographic color image using black and while emulsion

The invention relates to a method of making retroreflective sheeting and other articles prepared from casting a fluid synthetic resin onto a tool having a microstructured surface with a slot die apparatus. The invention further relates to a slot die apparatus.

Method of making retroreflective sheeting and slot die apparatus

An integrated retroreflective data communication display for visual and electromagnetic communication is described. The display may be configured as an integrated retroreflective electronic license plate, with printed visual information, similar to the information printed on traditional license plates, on retroreflective sheeting. An antenna network is integrated within the license plate for electromagnetic communication and may be connected to external electronic modules. The display may also be configured as an integrated retroreflective electronic road sign, also providing visual and electromagnetic information in a unitary structure.

Integrated retroreflective electronic display

An easily controllable method to adjust the die slot exit gap to produce an accurately controlled flow from the slot exit across the width of a die provides movable back seats at the back of the die that cause the front and back portions of the die plates to move simultaneously to produce a change in the die slot exit gap. At least one actuator is located between the front and back seats of the die to increase or reduce its length to bend the first plate around the front seat thereby to increase or decrease the first exit gap.

Coating die with slot thickness control

An easily controllable method to adjust a die slot exit gap to produce an accurately controlled flow from the slot exit across the width of a die provides movable back seats at the back of the die that cause front and back portions of die plates to move simultaneously to produce a change in the die slot exit gap. At least one actuator is located between the front and back seats of the die to increase or reduce the actuator length to bend the first plate around the front seat thereby to increase or decrease the first exit gap.

Method of thickness control for dies

A method for regulating the thickness of an applied coating. The method includes passing a web through two members which define a gap between them. A sensor measures periodic variations in the thickness of the coating on the web. An automatic controller analyzes information from the sensor and converts the information into gap adjusting signals. Piezoelectric or magnetostrictive translators adjust the size of the gap to compensate for repeating variations in coating thickness.

Roll gap controller for regulating coating thickness

Growing community of inventors

Saint Paul, MN, United States of America

Stephen W Mohn