Abstract:
A thermal processor includes an air flow preventing means that substantially prevents the flow of air from a processor exit into a thermal processing compartment. The prevention of air flow reduces processing defects that otherwise could occur in sheets of thermally processed material handled by the thermal processor. The reduction of processing defects enhances the quality of the sheet of thermally processed material. In particular, the reduction of processing defects can enhance image quality of a sheet of photothermographic imaging material. The prevention of air flow reduces processing defects by maintaining a substantially uniform temperature within a thermal processing compartment of the thermal processor, and by reducing the condensation of fatty acids on interior surfaces of the thermal processing compartment prior to filtration.
Abstract:
An apparatus and method for cleaning developer from an imaging substrate (12) to carry out a plurality of cleaning operations. The apparatus and method first operate to move the imaging substrate (12) in a first direction while delivering cleaning liquid (20) to the imaging substrate (12). In a subsequent operation, the apparatus and method operate to contact the imaging substrate (12) with a cleaning blade (36) that cleans at least some of the developer (16) from the imaging substrate (12). At the same time, some of the developer cleaned from the imaging substrate collect on the cleaning blade. In another operation, the apparatus and method operate to move the imaging substrate in a second direction. During this operation, the imaging substrate (12) removes developer (16) collected on the cleaning blade (36), and the cleaning liquid (20) cleans from the imaging substrate (12) the developer (16) removed from the cleaning blade (36). The apparatus and method next operate to discontinue contact of the cleaning blade with the imaging substrate, and discontinue delivery of the cleaning liquid to the imaging substrate. Discontinued contact and delivery of cleaning liquid can cause some of the cleaning liquid to collect on the imaging substrate. A cleaning surface therefore is applied to clean away at least some of the cleaning liquid collected on the imaging substrate.
Abstract:
An apparatus and method for removing excess developer liquid from an imaging substrate make use of a squeegee roller (12), and means for loading the squeegee roller against the imaging substrate. The squeegee roller removes the excess developer liquid from the imaging substrate at an upstream side of the squeegee roller relative to a direction of movement of the imaging substrate. A portion of the excess developer liquid can pass to a downstream side of the squeegee roller, however, and be transferred from the squeegee roller to the imaging substrate. A second developer liquid removal mechanism is provided to remove from the imaging substrate the portion of the excess developer liquid transferred from the squeegee roller. The second developer liquid removal mechanism may comprise a second squeegee roller (14) mounted at a position adjacent the downstream side of the first squeegee roller. The second squeegee roller can include first and second squeegee sections that contact the imaging substrate at positions outside of the imaging region. The second squeegee roller can be driven in a direction opposite to the direction of movement of the imaging substrate to effectively remove the excess developper liquid.
Abstract:
The invention is a photoconductor construction comprising a release layer which controls the carrier liquid on the surface of the photoreceptor and minimizes beading of toner carrier liquid. According to one embodiment this invention is a photoconductor construction comprising a photoconductor layer applied to an electroconductive substrate, an interlayer applied to the photoconductor layer, and a release layer over the interlayer. The release layer is a swellable polymer. According to another embodiment this invention is a photoconductor construction comprising a polymeric release layer that has a surface with an average roughness, Ra, of at least 10 nm.
Abstract:
Hydroxamic acid compounds are useful as contrast enhancers when used in combination with (i) hindered phenol developers, and (ii) trityl hydrazide and/or formyl-phenyl hydrazine co-developers, to produce ultra-high contrast black-and-white photothermographic and thermographic elements. The photothermographic and thermographic elements may be used as a photomask in a process where there is a subsequent exposure of an ultraviolet or short wavelength visible radiation-sensitive imageable medium.
Abstract:
N-acyl-hydrazine compounds are useful as contrast enhancers when used in combination with (i) hindered phenol developers, and (ii) trityl hydrazide and/or formyl-phenyl hydrazine co-developers, to produce ultra-high contrast black-and-white photothermographic and thermographic elements. The photothermographic and thermographic elements may be used as a photomask in a process where there is a subsequent exposure of an ultraviolet or short wavelength visible radiation-sensitive imageable medium.
Abstract:
Hydroxylamine, alkanolamine, and ammonium phthalamate compouds are useful as contrast enhancers when used in combination with (i) hindered phenol developers, and (ii) trityl hydrazide and/or formyl-phenyl hydrazine co-developers, to produce ultra-high contrast black-and-white photothermographic and thermographic elements. The photothermographic and thermographic elements may be used as a photomask in a process where there is a subsequent exposure of an ultraviolet or short wavelength visible radiation-sensitive imageable medium.
Abstract:
A thermographic element comprises a support having coated on at least one surface thereof a thermographic imaging system that contains a substantially light insensitive metal salt; a gallic acid reducing agent; and an infrared absorbing compound. These elements provide images that have high density in the ultraviolet spectral region when exposed to infrared radiation.
Abstract:
A rotating removable data storage device hub (220), such as a hub for a micro-floppy magnetic data storage disc (21), that has a core (226) of plain carbon steel having about 0.2 % or less carbon and a primary coating (228). The hub may also include a vapor corrosion inhibiting layer (238) on the primary coating. The plain carbon steel can have about 0.5 % or less carbon. The primary coating can be tin, nickel, zinc, chrome, paints, epoxies, epoxy-urethanes, phenolic resins, and combinations thereof. The vapor corrosion inhibiting layer may include an amine to reduce the rate of oxidation of the plain carbon steel core.
Abstract:
The present invention provides a molded-in lifter for supporting a fabric liner (14, 18) of a flexible magnetic recording disc (16) so that the disc is cleaned by rotation of the disc with respect to the liner when the disc is housed within a cartridge. The lifter is a raised rib (30) that has a controlled height typically provided by deforming a molded-in rib to the desired height. The cartridge may also include a recess (142) in the shell opposite the rib to receive the rib and prevent or reduce compression of the media if the cartridge is compressed.