Method for making a faceplate for an electrostatic printing...

Details Method for making a faceplate for an electrostatic printing... Method for making a faceplate for an electrostatic printing...

H - Electricity

01

J

313/35.34

H01J 9/00 (2006.01) H01J 9/20 (2006.01) H01J 9/28 (2006.01) H01J 31/06 (2006.01)

Patent

CA 1144591

PF 2513JL/LS 28/78 ABSTRACT A method for making a faceplate for an electrostatic printing tube involves the positioning of the faceplate at an angle with respect to a collimated light source so that the pins embedded within the faceplate act as a mask to provide shadowed areas which prevent positive photoresist on a transparent conductive coating adhered to a surface of the faceplate from being exposed to light. The photoresist exposed to light is removed and the conductive coating is etched except where the nonexposed photoresist is located thereby forming elongated conductive pads electrically connected to respective pins. The nonexposed photoresist is removed and the conductive pads are plated with a suitable secondary electron emissive material. -9-

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