Abstract: An aqueous-based cutting fluid for machining photoreceptor substrates contains:(A) at least one antioxidant;(B) one or more surfactants, at least one of which is a polysiloxane surfactant;(C) at least one lubricant; and(D) water.The cutting fluid can also optionally contain one or more biocides. The cutting fluid is environmentally safe, non-toxic and biodegradable and can be removed in a postmachining cleaning process using only high quality distilled water.

Abstract: A method of rendering nonreflective an imaging member substrate, preferably a photoreceptor substrate, involves etching the substrate with(a) an effective amount of an etching agent at a temperature sufficient to effect etching of the substrate, wherein the etching agent comprises (i) high purity deionized water, (ii) a mixture of high purity deionized water and a mild acid or (iii) a mixture of high purity deionized water and a base; or(b) a combination of the etching agent (a) and modulating ultrasonic energy.This method renders the substrate clean, spotless, and pristine, and provides it with uniform surface roughness.

Abstract: A method of cleaning a substrate includes:(1) lathing a substrate surface with a cutting fluid composition containing (A) an antioxidant, (B) a surfactant, (C) a lubricant, and (D) water;(2) rinsing the lathed substrate surface with high quality deionized water having a resistivity of at least 2M ohm-cm;(3) immersing the rinsed lathed substrate surface in a bath of high quality deionized water having a resistivity of at least 2M ohm-cm; and(4) removing the substrate from the bath of deionized water at a rate low enough to prevent water droplets from forming on the substrate.

Abstract: A selenium alloy electrophotographic imaging member having an optically transparent NESA coated substrate. An x-ray image is formed from the side of the photoreceptor opposite the transparent substrate and then is scanned from the back side through the transparent substrate with a fine beam of light, the position of which is precisely monitored. The ensuing discharge from the light beam is detected by a non-contacting x-ray transparent electrode located on the outer side of the photoreceptor, away from the substrate, which reads the discharge signal through capacitive coupling, pixel by pixel, according to the position of the light beam, to form a high resolution raster pattern digital readout of the image.