Abstract: A process for making a polymer with ultra-high mechanical properties by subjecting to compression and rotation in a contained geometry at a viscosity in the range of from 50 to 10.sup.4 poise an aromatic liquid crystalline copolyester.
Type:
Grant
Filed:
January 27, 1984
Date of Patent:
September 30, 1986
Assignee:
International Business Machines Corporation
Inventors:
James Economy, Anagnostis E. Zachariades
Abstract: A phase-sensitive ultrasonic modulation method for the detection of strain-sensitive spectral features involves the use of an ultrasonic field with well-defined wavefronts and a light beam of spot size less than the ultrasonic wavelength and of linewidth less than that of the spectral feature. When the light wavelength coincides with the wavelength of the spectral feature, the ultrasonic wave shifts, splits, or broadens the absorption lineshapes of the various centers contributing to the spectral feature thereby changing the amplitude or phase of the light beam or emitted fluorescence in synchrony with the ultrasonic field.
Type:
Grant
Filed:
February 4, 1985
Date of Patent:
September 30, 1986
Assignee:
International Business Machines Corporation
Abstract: A surface coating of high glass temperature and superior mechanical properties along with excellent planarization and gap filling is used to coat substrates. The coating comprises a polyamide alkyl ester from a pyromellitic alkyl diester and a para-linked aromatic diamine dissolved in a solvent containing at least 10% of a co-solvent boiling above 220.degree. C.
Type:
Grant
Filed:
July 25, 1985
Date of Patent:
September 16, 1986
Assignee:
International Business Machines Corporation
Inventors:
Donald C. Hofer, Debra B. LaVergne, Robert J. Twieg, Willi Volksen
Abstract: In a process for etching by reactive ion etching, a ceramic partially masked by an organic photoresist, an etch gas containing SF.sub.6, a noble gas and a small percentage of a carbon-containing gas is used.
Type:
Grant
Filed:
June 20, 1985
Date of Patent:
July 22, 1986
Assignee:
International Business Machines Corp.
Inventors:
Jacqueline K. Bianchi, Robert A. Gdula, Dennis J. Lange
Abstract: A lithographic resin for use with deep ultraviolet radiation comprises a weakly acidic resin and an alpha phosphoryl substituted diazo carbonyl compound as a sensitizer.
Type:
Grant
Filed:
March 28, 1985
Date of Patent:
July 22, 1986
Assignee:
International Business Machines Corporation
Inventors:
Nicholas J. Clecak, Barbara D. Grant, Robert D. Miller, Terry C. Tompkins, Carlton G. Willson
Abstract: The orientation of the alignment layer in a raster-scanned thermally addressed smectic liquid crystal display device can be chosen relative to the writing orientation to accentuate a selected characteristic. A perpendicular alignment with respect to the scan direction produces uniformly written images in both scan directions to allow high quality bidirectional writing. In a preferred embodiment the liquid crystal cell includes a liquid crystal material comprising 4-octyloxy-4'-cyanobiphenyl 37.5%, 4-decyl-4'-cyanobiphenyl 36.8% weight percent and 4-undecyl-4'-cyanobiphenyl 25.7 weight percent.
Type:
Grant
Filed:
December 12, 1983
Date of Patent:
April 29, 1986
Assignee:
International Business Machines Corporation
Inventors:
Nicholas J. Clecak, Robert J. Cox, Joseph S. Feng, Jerry Leff
Abstract: The magnetic disc comprises a magnetizable layer (1) to which an adhesion promoting layer (4) and thereto a lubricant film (5) are applied. Onto the substrate of the magnetic head (2) an adhesion reducing layer (9) is deposited. The apparatus can also show only one adhesion-influencing layer. The layers (4) and (9) are formed by the reaction of a sililating agent with reactive groups on the surface of the magnetizable layer (1), or of the substrate of the magnetic head (2), respectively. The sililating agents used differ in their terminal groups of which one category produce van der Waals bonds to the lubricant molecules, and the other is chemically indifferent relative to the lubricant molecules.The two layers (4) and (9) are made e.g. by the spin-coating of a solution of the sililating agent, and subsequent drying.The apparatus ensures a homogeneous coating of the magnetizable layer (1) with lubricant, and it prevents the pick-up of lubricant by the substrate of the magnetic head (2).
Type:
Grant
Filed:
April 27, 1984
Date of Patent:
April 15, 1986
Assignee:
International Business Machines Corporation
Inventors:
Annelie Monnich, Michael Glatzel, Holger Hinkel, Gerhard Kaus, Georg Kraus, Ulrich Kunzel, Erhard Max
Abstract: A fiber optic writing head delivers light from the ends of a close-packed array of optical fibers through a small inexpensive lens which images the light onto the writing surface. The ends of the individual fibers in the array are fixed at various angular positions to form a surface that is the image of the writing surface through the lens. The ends of the fibers are spaced along the surface so that the image that is produced on the writing surface has uniform spacing. The angular positions of the fibers are chosen such that the axis of the refracted beam emitted by each fiber is directed at the center of the entrance pupil of the lens.
Type:
Grant
Filed:
September 30, 1983
Date of Patent:
March 25, 1986
Assignee:
International Business Machines Corporation
Abstract: A process for selectively depositing copper by first selectively depositing palladium seeds by irradiating a palladium compound with light. Following the deposition of the palladium seeds, copper is deposited by an electroless process.
Type:
Grant
Filed:
November 19, 1984
Date of Patent:
March 4, 1986
Assignee:
International Business Machines Corporation
Inventors:
Thomas H. Baum, Frances A. Houle, Carol R. Jones, Caroline A. Kovac
Abstract: A negative tone resist image is achieved by (1) coating a substrate with a film of a polymer containing a masked, reactive functionality; (2) imagewise exposing the film to radiation in a fashion such that the masked functionality is liberated; (3) contacting the film with an organometallic reagent; (4) developing the relief image by the oxygen plasma etching.
Type:
Grant
Filed:
May 14, 1984
Date of Patent:
November 12, 1985
Assignee:
International Business Machines Corporation
Inventors:
Hiroshi Ito, Scott A. MacDonald, Robert D. Miller, Carlton G. Willson
Abstract: The ink layer of a thermal transfer printing ribbon is overcoated with a hold-off layer which serves to make the resulting printing more easily correctable. The hold-off layer operates by preventing penetration by the ink layer into the substrate being printed upon.
Type:
Grant
Filed:
June 26, 1980
Date of Patent:
October 15, 1985
Assignee:
International Business Machines Corporation
Abstract: A heat curable magnetic coating mixture contains one or more polymeric additives selected to thermally oxidize during coating cure to create a plurality of microvoids in the cured coating as an aid to increase the retention of a lubricant which is applied to the cured coating.
Type:
Grant
Filed:
June 27, 1983
Date of Patent:
October 8, 1985
Assignee:
International Business Machines Corporation
Inventors:
Ming Ko, Michael E. Oxsen, Robert B. Prime
Abstract: A magnetic disk is lubricated by being overcoated first with a permanently bound monolayer of silica spheres about 7 nm in diameter and on top of said monolayer a skin-like film of amorphous silica about 2 to 13 nm thick.
Type:
Grant
Filed:
July 14, 1983
Date of Patent:
September 17, 1985
Assignee:
International Business Machines Corporation
Abstract: A method for capacitatively storing data on a grooveless storage device is provided. The storage device is comprised of a conductive substrate having a layer of a photosensitive composition which dielectric constant is varied in the presence of irradiation. The method is carried out by exposing a layer of a photosensitive composition to irradiation in a predetermined pattern. The exposed layer is fixed by heating. Video disks for recording and playing back video signals can be prepared in accordance with the present method.
Type:
Grant
Filed:
August 24, 1981
Date of Patent:
August 27, 1985
Assignee:
International Business Machines Corporation
Abstract: A dry process for forming a positive tone micro pattern by coating a substrate with an organic polymer film then with a film of an oxygen etch barrier, selected from the group consisting of films of organometallic, including organosilicon compounds and metals, exposing the etch barrier film to a low energy proton beam in a patternwise manner, and developing the pattern by means of oxygen reactive ion etching.
Type:
Grant
Filed:
December 12, 1983
Date of Patent:
March 26, 1985
Assignee:
International Business Machines Corporation
Abstract: A process for producing a resist pattern by dry development using a resist comprising from 70 to 50% by weight of a novolac resin and from 30 to 50% by weight of a poly(ether pentene sulfone).
Type:
Grant
Filed:
October 25, 1983
Date of Patent:
February 5, 1985
Assignee:
International Business Machines Corporation