Abstract:
A bag and a method of packing a bag for storing sheets of material, such as photosensitive materials, provides a light-tight environment for the photosensitive material. The bag has a rear end which has a serpentine passageway, thereby creating a light-tight end as well as allowing for entrapped air to exit the cavity of the bag.
Abstract:
A sheet feed apparatus for an imaging device (12). The apparatus includes a drive roller (25c), plurality of sheets of photosensitive material (18), a photographically inert liner (19) having upper and lower surfaces and a container for storing the sheets of photosensitive material (18). Proper feeding of the sheets of material (18) and a stable location of the liner (19) are ensured by appropriate coefficients of friction between the respective components.
Abstract:
The present invention provides methods and apparatus for stabilizing data storage media (11) during laser servowriting of optical servo tracks on the media. The apparatus includes a spindle (50) for rotating the media during servowriting, a fixed media platform (30), and a media support (60) for stabilizing the vertical position of the media during servowriting. The media support may include channels (62) to reduce or control the formation of an air bearing in the area of servowriting to stabilize the vertical positioning of the media. The media support may also include a vacuum slot (166) for drawing a vacuum through the channels.
Abstract:
2-Substituted malondialdehyde compounds are useful as co-developers in combination with hindered phenol developers to produce 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:
An apparatus (10) useful for passively steering an endless belt (12) toward a lateral target belt position while the endless belt (12) is transported by a transporting mechanism (16). A steering roller (14) contacts the belt inner surface (18), the steering roller (14) being rotatable about a roller axis (54) and being pivotable about a steering axis (56), and the steering roller (14) having a first roller end (50). A carriage (70) supports the steering roller (14) and is pivotable about a steering axis (56) such that the steering roller (14) is pivotable about the steering axis (56). A first member (61) is positioned adjacent to the first roller end (50) and functionally connected to the carriage (70). The first member (61) contacts the belt inner surface (18) when the first belt edge (22) extends sufficiently beyond the first roller end (50). The first member (61) applies greater friction to the endless belt (12) than the steering roller (14) when the belt (12) contacts the first member (61). The first member (61) is positioned relative to the steering axis (56) such that contact between the first member (61) and the belt (12) causes the first member (61) to apply a first torque to the carriage means (70) about the steering axis (56).
Abstract:
An apparatus (10) can affect or control the movement of a movable component (26). The movable component (26) is movable between a first position and a second position and is useful within an environment where an unintentional moving force can be applied to the movable component (26). The movable component (26) can be a part of a latching apparatus for latching itself to another component (28). Or, the movable component (26) can be a part of a sensing apparatus for sensing a stimulus which causes the movement of the movable component (26).
Abstract:
A development apparatus for developing a latent electrostatic image on an imaging substrate in a liquid electrographic imaging system includes a cleaning roller for removing back-plated developer from a development device such as a development roller, and a squeegee apparatus for removing both "drip-line" developer liquid and "wrap-around" developer liquid from the imaging substrate. The squeegee apparatus may include a squeegee roller having a crowned profile and a loading mechanism configured to achieve a uniform loading force across a pressure nip formed between the squeegee roller and the imaging substrate. The cleaning roller may include a fiber cleaning media and fluid delivery means for flushing back-plated developer from the cleaning media. The development apparatus also may include means for spacing the development apparatus relative to the imaging substrate without contacting the imaging substrate, thereby avoiding disruption of the motion quality of the imaging substrate.
Abstract:
An imaging system and method incorporate an apparatus and method for cleaning developer liquid from an imaging substrate such as a photoreceptor. The system and method operate to move the imaging substrate in a first direction, from a latent electrostatic image on an imaging region of the imaging substrate, engage a development device in proximity with the imaging substrate, load a squeegee roller against the imaging substrate, the squeegee roller being driven by the imaging substrate in the first direction, apply developer liquid from the development device to the imaging region, thereby developing the latent electrostatic image, terminate application of developer liquid from the development device upon movement of a nonimaging region of the imaging substrate past the development device, wherein the disengagement of the development device leaves on the imaging substrate a second excess volume of the developer liquid, drive the squeegee roller in a second direction upon movement of the nonimaging region past the squeegee roller, the squeegee roller substantially removing the second excess volume of developer liquid, and transfer the developer liquid remaining on the imaging region to an imaging substrate, thereby forming a representation of an image.
Abstract:
Apparatus and method in which a multi-color image, such as a standard four color image, is assembled on a medium (36), such as paper or film. Liquid ink (50, 60, 68, 76) contains conventional "solid" colored toner particles and also contains transparent counter ions. The conventional "solid" colored toner particles in plate to the surface of the photoreceptor (10) while the transparent counter ions plate in the opposite direction, i.e., the transparent counter ions plate to the surface of photoreceptor (10) in areas which are not discharged. Conventional "solid" colored toner particles plate to electrode (56, 64, 72, 80) in areas where the photoreceptor (10) has not been discharged while transparent counter ions plate to electrode (56, 64, 72, 80) in areas discharged. This allows an apparatus and method in which the multi-color image can be assembled during a single pass of a photoreceptor (10) without the necessity to erase and externally recharge the photoreceptor (10) between development steps for each separate color resulting in an apparatus and method which can print multiple color images at an unrivaled speed.
Abstract:
Method and apparatus for producing an image on plain paper from image data using a photoreceptor. An image-wise distribution of charges is produced on the photoreceptor corresponding to the image data. A liquid ink having solid charged pigmented particles, the liquid ink having an effective glass transition temperature of less than 25 degrees Celsius is applied to the photoreceptor forming an image-wise distribution of the pigmented particles on the photoreceptor to form the image. The liquid ink has greater than seventy-five percent by volume fraction of solids in the image. A film forming means (82, 84, 86, 88) is positioned against the photoreceptor (10) immediately following the application means (52, 60, 68, 76) to dry the image of the liquid ink to film forming within 0.5 seconds. The image is dried on the photoreceptor. The image is then transferred to an elastomeric transfer roller (38) which forms a first transfer nip under pressure with the photoreceptor. The elastomeric transfer roller is heated from 50 degrees Celsius to 100 degrees Celsius. Subsequently, the image is transferred to plain paper (36) through a nip formed between a backup roller (40) under pressure with the transfer roller. The release layer of the photoreceptor has a surface energy which is less than a surface energy of the elastomeric transfer roller which in turn is less than a surface energy of the liquid ink which in turn is less than a surface energy of the plain paper.