Original Publication Date: 1979-Dec-31
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
Apparatus for coating a substrate 11 such as paper with a powdered material 8 has a porous, hollow, rotatable drum 5, the interior 6 of which is evacuated. A porous substrate 7 is disposed about the drum 5, with the lower portion of the assemblage immersed in the powdered material 8 contained in chamber 9. Doctor blade 10 controls the thickness of the powdered coating applied to the substrate 11.