Patents Assigned to Imation Corp.
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Publication number: 20030198835Abstract: Perpendicular magnetic media are described for use in magnetic recording and data storage. For example, a magnetic medium may include a substrate, a layer of titanium formed over the substrate, a layer of platinum formed over the layer of titanium, and a multi-layered magnetic stack formed over the layer of platinum. The layer of titanium provides a seed layer to improve the crystal texture of the layer of platinum. The layer of platinum, in turn, provides a seed layer to improve the crystal texture of the multi-layered magnetic stack. In this manner, high perpendicular magnetic anisotropy can be achieved and storage densities can be increased.Type: ApplicationFiled: April 17, 2002Publication date: October 23, 2003Applicant: Imation Corp.Inventor: Joseph H. Sexton
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Patent number: 6633454Abstract: A data storage device has a shock sense indicator disposed within its housing. The shock sense indicator may provide visible, audible, and/or machine-detectable indication of whether the data storage device has been subjected to a physical shock over some threshold. Machine detection of the shock state can be accomplished optically, mechanically, or electrically. A data storage drive has a detection switch that interfaces with a shock detector of a data storage device to ensure that no harmful operation is performed on a data storage device that has been subjected to a physical shock, thereby avoiding potential loss or corruption of data.Type: GrantFiled: September 27, 1999Date of Patent: October 14, 2003Assignee: Imation Corp.Inventors: Robert C. Martin, William J. Vanderheyden
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Patent number: 6628479Abstract: A data storage cartridge (10) includes a door and door spring assembly (30). The door and door spring assembly (30) includes a door member (31) and an elongate member (32) having a first end (31a) operatively connected to the door member (31). A spring (33) is mounted on the elongate member (32). A slidably mounted stop (34) is operatively connected to the housing (12). The stop (34) has a containment member, wherein the spring is maintained in position by the stop (34).Type: GrantFiled: September 28, 2000Date of Patent: September 30, 2003Assignee: Imation Corp.Inventor: G. Phillip Rambosek
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Patent number: 6628603Abstract: A multi-layer optical storage medium includes a transparent substrate, a partially reflective layer, a transparent spacer, and a highly reflective layer. One pattern of data pits is provided on the substrate, adjacent the partially reflective layer, and another pattern of pits is provided on the spacer layer, adjacent the highly reflective layer. The partially reflective layer may be made of antimony sulfide, such as antimony(III) sulfide, Sb2S3. The invention also includes the optical data storage systems compatible with such media.Type: GrantFiled: March 27, 1997Date of Patent: September 30, 2003Assignee: Imation Corp.Inventors: Kam K. Kam, William C. Mitchell, Mark A. Arps
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Patent number: 6628598Abstract: A system for reading data from recording media having topographical features readable with a slider-mounted non-magnetic transducer sensitive primarily to changes in local aerodynamic boundary conditions.Type: GrantFiled: December 5, 2000Date of Patent: September 30, 2003Assignee: Imation Corp.Inventors: Jathan D. Edwards, Garry R. Lundstrom, Paul R. Iverson, Joseph H. Sexton
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Patent number: 6625100Abstract: In one embodiment, a holographic data storage medium includes a substrate, a holographic recording material, and an optically detectable tracking pattern on the medium. The substrate may have first and second substrate portions. The holographic recording material may be a photopolymer, and the medium may have a sandwiched construction, where the holographic recording material is sandwiched between the first and second substrate portions. The optically detectable tracking pattern may be replicated on at least one of the substrate portions. Alternatively, the optically detectable tracking pattern may be recorded as a holographic grating in the holographic recording material. The tracking pattern may facilitate the ability to pinpoint the location of the holographic bit maps on the holographic medium to within a fraction of a micron.Type: GrantFiled: March 20, 2001Date of Patent: September 23, 2003Assignee: Imation Corp.Inventor: Jathan D. Edwards
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Patent number: 6625336Abstract: A method and apparatus for optically assaying a targeted substance in a sample using a sensor comprising a dielectric film stack having a plurality of dielectric layers. For at least one angle of incidence the dielectric layers operate as a waveguide for light incident upon the sensor. In one configuration, each dielectric layer comprises a dielectric material selected from a first dielectric material having a first index of refraction and a second dielectric material having a second index of refraction. The dielectric film stack is formed such that the dielectric material of the dielectric layers alternates between the first dielectric material and the second dielectric material. The dielectric film stack is either formed as a dielectric mirror such that light incident upon the sensor reflects from the sensor or as an anti-reflection film stack such that light incident upon the light beam propagates through the sensor.Type: GrantFiled: September 28, 2001Date of Patent: September 23, 2003Assignee: Imation Corp.Inventors: William A. Challener, James M. DePuydt, William A. Tolbert
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Patent number: 6622866Abstract: One or more pieces of recording media are contained within a single package having a conventional jewel case form factor.Type: GrantFiled: November 19, 2001Date of Patent: September 23, 2003Assignee: Imation Corp.Inventors: Gregory D. Roberts, William L. Hauer, Kevin S. McFadden
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Patent number: 6616867Abstract: In exemplary embodiments, the invention provides one or more processes for making stampers for stamping replica data storage disks. For instance, the invention may provide a process for making a family of stampers from one master. Moreover, the invention may provide a way to systematically adjust the depth of the grooves on a stamper in a particular family of stampers while maintaining groove widths that are substantially the same as those of the master.Type: GrantFiled: February 7, 2001Date of Patent: September 9, 2003Assignee: Imation Corp.Inventor: Donald J. Kerfeld
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Publication number: 20030165029Abstract: Servopositioning systems, methods, formats, and data recording media used in association with the same, employing additional timing reference information to improve immunity to time-based errors caused by instantaneous speed variations.Type: ApplicationFiled: March 1, 2002Publication date: September 4, 2003Applicant: Imation Corp.Inventors: Richard W. Molstad, Yung Yip
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Patent number: 6614607Abstract: Bias recording is used to record servo patterns on magnetic tape. With use of bias recording, a faster recording process may be provided relative to conventional pulse recording processes. A servo pattern recording method includes providing a servo band along at least a portion of a length of a tape. Bursts of a first signal are recorded in a first servo track of the servo band along the length of the tape and a second signal, e.g., a continuous signal, is recorded in at least a second servo track of the servo band along the length of the tape. The second servo track is recorded adjacent to the first servo track and at least one of the first signal and the second signal is recorded using a bias signal at a bias frequency summed with a record signal at a record frequency. A system for carrying out the bias recording of servo patterns is also described.Type: GrantFiled: December 29, 1999Date of Patent: September 2, 2003Assignee: Imation Corp.Inventors: Stephen J. Rothermel, Robert P. Groschen, Jr., Curtis B. Hause, Richard E. Jewett, Steven C. Weber
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Patent number: 6611365Abstract: In one embodiment, holographic data storage medium includes a first thermoplastic substrate portion having a thickness less than approximately 2 millimeters and a second thermoplastic substrate portion having a thickness less than approximately 2 millimeters. A holographic recording material may be sandwiched between the first and second thermoplastic substrate portions. By making thermoplastic substrate portions sufficiently thin, edge wedge problems can be avoided.Type: GrantFiled: March 20, 2001Date of Patent: August 26, 2003Assignee: Imation Corp.Inventors: Jathan D. Edwards, Frank E. Aspen, Ramon F. Hegel, Chad R. Sandstrom
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Publication number: 20030151853Abstract: A system and method for cleaning a tape media, such as a magnetic tape. The system preferably includes first and second cleaning heads. The first cleaning head has a plurality of spaced ridges defining a curved, tape-receiving face. The second cleaning head has including a plurality of lands spaced by shallow cavities configured to establish a sub-ambient condition. During use, a tape is transversed over the first cleaning head, with contact at leading edges formed by the ridges removing relatively large and loose particles. Relative to the second cleaning head, the tape partially wraps about a leading corner of the lands, due to the sub-ambient condition within the shallow cavities, facilitating removal of small, tacky debris. Processing by the cleaning heads simulates multiple passes over a magnetic head, thereby stabilizing magnetic tape. In alternative embodiments, the system includes only one of the first or second cleaning heads.Type: ApplicationFiled: February 11, 2002Publication date: August 14, 2003Applicant: Imation Corp.Inventors: Saeed A. Fahimi, Richard E. Jewett, Allan R. Markert, Durkee B. Richards
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Publication number: 20030151814Abstract: A holographic data storage medium having an anti-reflective coating is described. The anti-reflective coating can be made to reduce reflectivity for S-polarized light over a wide range of incident angles. Moreover, the anti-reflective coating can be made to have a sufficiently high transmittance for the S-polarized light. The coating may improve performance of the holographic data storage medium, and can facilitate higher storage densities than can be achieved without the coating.Type: ApplicationFiled: February 14, 2002Publication date: August 14, 2003Applicant: Imation Corp.Inventor: Frank E. Aspen
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Patent number: 6605416Abstract: Photochemical acid progenitors in combination with dihydroperimidine squarylium dyes have been found to be particularly effective at generating acid upon irradiation with near-infrared radiation. It has been found that dihydroperimidine squarylium dyes that are particularly useful in this invention have an oxidation potential greater than about 0.5 V relative to SCE as measured in dichloromethane.Type: GrantFiled: February 2, 1998Date of Patent: August 12, 2003Assignee: Imation Corp.Inventors: Stanley C. Busman, Richard J. Ellis, Jeanne E. Haubrich, William D. Ramsden, Tran Van Thien, Gregory D. Cuny
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Publication number: 20030135672Abstract: A system is described including a data cartridge carrying a non-tape storage medium. The data cartridge includes read/write circuitry to access the non-tape storage medium and an external electrical connector coupled to the controller. The system further includes a tape drive emulator having an electrical socket to receive the electrical connector of the data cartridge. The socket may comprise a zero insertion force (ZIF) socket having a set of connectors that engage the electrical connections of the data cartridge. The tape drive emulator may mechanically actuate the ZIF socket upon sensing the insertion of the electrical interface of the data cartridge. Alternatively, the socket may include a mechanical actuation mechanism operable by a data cartridge library automation system to electrically couple the data cartridge to the emulation tape drive.Type: ApplicationFiled: January 14, 2002Publication date: July 17, 2003Applicant: Imation Corp.Inventors: Yung Yip, Alan R. Olson
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Patent number: 6585021Abstract: A CD label applicator kit including a case, a support device and an applicator tool. The case includes a base and cover that provides a label plate. The label forms an opening. The support device includes an alignment post, a hub and a spring. The alignment post is affixed to an outer wall of the cover and extends outwardly through the opening. The hub is slidably disposed about the alignment post and defines a disk-receiving surface. The spring biases the hub to a raised position in which the disk-receiving surface is above the label plate. Finally, the applicator tool forms a central passage sized for selective placement about the alignment post. In one preferred embodiment, the kit includes a label sheet pack and a software disk stored within the base, and a writing utensil secured to the cover.Type: GrantFiled: June 22, 2001Date of Patent: July 1, 2003Assignee: Imation Corp.Inventors: Jon R. Clark, George L. Foster, Richard E. Jewett, Leo W. Spychalla, John W. Swanson
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Publication number: 20030112321Abstract: The invention is directed to techniques for compensating for imaging aberrations that result from repeated passes by an imaging laser array. The techniques provide for printing overlapping swaths and providing masking for at least one printing pass. The masks generally expand and contract the breadth of the printing swath.Type: ApplicationFiled: December 19, 2001Publication date: June 19, 2003Applicant: Imation Corp.Inventor: Dallas K. Pierson
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Publication number: 20030112453Abstract: In general, the invention provides scaling tools for compensating for scaling variations between two printing systems, such as an analog printing system and a digital printing system. An operator designates one of the systems as the reference printing system and the other printing system as the scalable printing system. The operator constructs a reference grid with the reference printing system and a scaling grid with the scalable printing system. By comparing the reference grid and the scaling grid, the operator finds one or more scaling factors, which the operator may use to set the scale of the scalable printing system. The operator may print an image using the reference printing system and the scalable printing system, and the scalable printing system prints to the same scale as the reference printing system.Type: ApplicationFiled: December 18, 2001Publication date: June 19, 2003Applicant: Imation Corp.Inventor: Donald L. Swihart
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Patent number: RE38251Abstract: Photochemical acid progenitors in combination with dihydroperimidine squarylium dyes have been found to be particularly effective at generating acid upon irradiation with new-infrared radiation. It has been found that dihydroperimidine squarylium dyes that are particularly useful in this invention have an oxidation potential greater than about 0.5 V relative to SCE as measured in dichloromethane.Type: GrantFiled: February 23, 2000Date of Patent: September 16, 2003Assignee: Imation Corp.Inventors: Stanley C. Busman, Richard J. Ellis, Jeanne E. Haubrich, William D. Ramsden, Tran Van Thien, Gregory D. Cuny