Abstract

Diamond-like carbon films with high transmittance over 90% and hardness substantially higher than that of a organic photoconductor (OPC) were deposited on OPC layers using a d.c.-remote plasma enhancement chemical vapor deposition (RPECVD) system with a magnetic field imposed around the cathode. All the electrophotographic properties except residual potential were enhanced by DLC coating. The hardness and resistivity of the DLC film were also improved by adding oxygen to CH 4 gas. However, the residual potential value can be reduced to 11.0 V which is acceptable even for high sensitivity laser printing, by using a CH 4–20at.% O 2 gas mixture in the RPECVD for DLC coating.

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