Eastman-kodak Company

Tomas G P McHugh

Stewart W Blair

Greg Munro

Peter S Alexandrovich

Rodney Ray Bucks

Jerry Alan Pickering

A toner coverage sensing system is provided for sensing toner particles printed onto a surface of a process element using an electrophotographic printing system. The printed toner particles include porous color toner particles. An infrared radiation source directs infrared radiation onto the printed toner particles on the surface of the process element A diffused radiation detector senses infrared radiation scattered from the printed toner particles, wherein the diffused radiation detector is oriented such that that the sensed infrared radiation does not include specular reflections from the surface of the process element. A data processing system determines a sensed toner coverage for the porous color toner particles on the surface of the process element responsive to the sensed scattered infrared radiation.

Process control sensing of toner coverage

An apparatus () for surface treating particulate material (M) with surface treatment particles (S) includes a substantially cylindrical body () having a top (), bottom () and sidewall (). A mixing chamber () is defined within the body (). At least one injector inlet () and at least one process air inlet () are in communication with the mixing chamber (). At least one outlet () is in fluid communication with the mixing chamber ().

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Webster, NY, United States of America

Tomas G P McHugh