Abstract: A method for detecting specular surface flaws on a coated substrate includes impinging visible non-integrated electromagnetic radiation from a first source onto the coated substrate, reflecting the visible non-integrated electromagnetic radiation off the coated substrate into a first photosensitive device, forming a recorded high frequency surface flaw image, and impinging visible coherent electromagnetic radiation from a second source onto a coated substrate at an oblique angle. The visible non-integrated electromagnetic radiation and the visible coherent electromagnetic radiation on the coated substrate are collocated but not combined on the substrate. The visible coherent electromagnetic radiation is reflected off the coated substrate onto a screen material to form a low frequency surface flaw image. The low frequency surface flaw image is recorded to form a recorded low frequency surface flaw image.

Abstract: A method for detecting specular surface flaws on a coated substrate includes impinging visible non-integrated electromagnetic radiation from a first source onto the coated substrate, reflecting the visible non-integrated electromagnetic radiation off the coated substrate into a first photosensitive device, forming a recorded high frequency surface flaw image, and impinging visible coherent electromagnetic radiation from a second source onto a coated substrate at an oblique angle. The visible non-integrated electromagnetic radiation and the visible coherent electromagnetic radiation on the coated substrate are collocated but not combined on the substrate. The visible coherent electromagnetic radiation is reflected off the coated substrate onto a screen material to form a low frequency surface flaw image. The low frequency surface flaw image is recorded to form a recorded low frequency surface flaw image.

Abstract: An apparatus and a method for detecting low frequency specular surface flaws on coated substrates is disclosed. A method for detecting low frequency specular surface flaws may comprise: impinging visible electromagnetic radiation or light from an electromagnetic radiation source onto the coated substrate at an oblique angle, reflecting the visible electromagnetic radiation off the coated substrate onto a screen material to form a specular surface flaw reflected image, and recording the reflected image off the screen material with a photosensitive device to form a recorded reflected image.

Abstract: An apparatus and a method for detecting low frequency specular surface flaws on coated substrates is disclosed. A method for detecting low frequency specular surface flaws may comprise: impinging visible electromagnetic radiation or light from an electromagnetic radiation source via a plurality of optical fibers onto the coated substrate, reflecting the visible electromagnetic radiation off the coated substrate as a reflected image, and recording the reflected image with a photosensitive device to form a recorded image.

Abstract: An apparatus and a method for detecting low frequency specular surface flaws on coated substrates is disclosed. A method for detecting low frequency specular surface flaws may comprise: impinging visible electromagnetic radiation or light from an electromagnetic radiation source onto the coated substrate at an oblique angle, reflecting the visible electromagnetic radiation off the coated substrate onto a screen material to form a specular surface flaw reflected image, and recording the reflected image off the screen material with a photosensitive device to form a recorded reflected image.

Abstract: An apparatus for removing a strip of coating material from one end of a drum, such as a photoreceptor drum used in xerography. A circular slit is formed in a resilient member, such as of closed-cell polyethylene foam. The end of the drum is rotated in the slit in the presence of a solvent, to remove the coating from the drum. A funnel-shaped shield encloses and extends upward from the circular slit, to retain the solvent and prevent splashing of solvent and other materials on neighboring hardware.