Abstract:
Certain propenenitrile compounds have been found to function as antifoggants and serve to improve the initial minimum density of black-and-white photo-thermographic and thermographic elements.
Abstract:
An apparatus for removing back-plated developer from a development device includes a shaft (74), cleaning media (76) mounted about the outer surface of the shaft, means for loading the cleaning media against the development device, and means for rotating the shaft and the cleaning media, wherein the cleaning media removes back-plated developer from the development device. The cleaning media may include a fiber material having a plurality of flow paths. A fluid flow means can be provided to deliver a cleaning liquid to the cleaning media to flush at least a portion of the removed back-plated developer from the cleaning media.
Abstract:
Acrylonitrile compounds are useful as co-developers when used in combination with hindered phenol developers to produce high contrast black-and-white photothermographic and thermographic elements. Acrylonitrile compounds are also useful as co-developers 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 cartridge for a disc-shaped recording medium, the cartridge including a cover shell (50) and a base shell (80) which house a flexible, magnetic recording medium therebetween. A movable shutter (54) is provided along a front edge (60) of the cartridge for covering, when in the closed position, an opening (56, 86) in each shell which allows a read/write head to access the recording medium. The shutter is windowless and has triangle-shaped portions (58, 88) which cover the read/write head access openings. The shutter includes a raised rib (114, 144) along its periphery and has a rounded corner (72, 102). A raised rib (78, 108) may also be provided on the cartridge shell adjacent the read/write head access opening to prevent debris particles from entering the interior of the cartridge via the head access opening (58, 88). The shutter is reinforced to prevent bending and has a rounded corner (72, 102) to minimize the chance that the shutter corner will become snagged on some other object, such as loose clothing.
Abstract:
Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.
Abstract:
A label programming system configured to initialize a radiofrequency (RF)-enabled label for attachment to a data storage device includes a platform, an RF read/write assembly disposed on a first side of the platform, and an optical reader assembly in electrical communication with the RF read/write assembly. The optical reader assembly is disposed on a second side of the platform opposite the first side. The optical reader assembly is configured to optically read information from the RF-enabled label and communicate the information to the RF read/write assembly that is configured to write the information to a chip of the RF-enabled label.
Abstract:
The invention is directed to techniques for erasing data storage tape for reuse. In an embodiment, an erase head module for erasing data storage tape comprises a set of erase gaps and one or more servo read elements. The set of erase gaps is configured to coincide with data bands of the data storage tape to allow erasure of only the data bands of the data storage tape while not erasing servo bands of the data storage tape. The one or more servo read elements detect one of the servo bands of the data storage tape when the set of erase gaps are proximate the data bands of the data storage tape to allow the erase head module to accurately track the data bands with the set of erase gaps.
Abstract:
The invention relates to a packaging device for securely holding and storing a plurality of discs, comprising a base, and an elongated spindle centrally situated on the base and projecting from the top side of the base in a substantially perpendicular orientation to the base, wherein the spindle is configured to receive and secure a plurality of discs to the base. The packaging device further comprises a removable, substantially circular protective endplate having a central opening for engaging with the top portion of the spindle, the endplate being disposed atop the plurality, of discs to protect and secure the plurality of discs to the spindle and base.
Abstract:
The disclosure is directed to a high pressure fluid processing device (12) for mixing, reacting, or otherwise combining fluids. The fluid processing device includes opposing, annular flow channels (62, 64). A first fluid enters the fluid processing device and flow through one annular flow channel (62) while the second fluid enters the fluid processing device and flow through another annular flow channel (64). The opposing flows of fluids collide with one another within the flow channels, and exit through an outlet (66).
Abstract:
The invention is directed to a data storage medium that includes a plurality of servo bands distributed across the data storage medium and a plurality of data tracks positioned between each of the plurality of distributed servo bands. The data storage medium comprises a servo band pitch of less than 200 micrometers. The large number of servo bands distributed across the data storage medium with a relatively small servo band pitch reduces the influence of media dimensional instability. In this way, the invention may substantially increase data read head positioning accuracy, especially in the case of narrow track widths. A read head array arranged in a two-dimensional matrix that includes a first servo read head, a second servo read head, and a plurality of data read heads positioned between the first and second servo read heads may be applied to a data storage medium as described herein.