Abstract: In a print head for ink jet printing a nozzle plate with a nozzle array is gold plated. The gold plated nozzle array is bonded to the polymer ink barrier layer on an electronic chip by a thin layer of tantalum, zirconium, titanium or silicon dioxide. The thin layer greatly increases the ability of the surface to bond chemically to the polymer.

Abstract: The magnetic recording layer of a recording medium contains a film-forming resin, magnetic particles, poly(ethyleneimine), and an amionic surfactant.

Abstract: A process for forming a composite high temperature superconductor copper wire, said process comprising the steps of (1) directing a submicron sized powder of a superconducting ceramic material through a length of copper tubing to coat the interior surface of said tubing with a uniform compact film of said powder, and (2) sintering said powder while passing oxygen through said tube and while maintaining the outside of said tube in an inert atmosphere. In a preferred embodiment an aerosol process is used to generate the submicron sized powder of the superconductor.

Abstract: Disclosed are compounds of the general formula:R--O--Ar--COS--Ph--COO--R'characterized by the presence of the thioester (--COS--) core and wherein R is an alkyl group with typically 8 to 16 carbon atoms, Ar is a substituted aromatic core group such as 1,4-benzene, 2,6-naphthalene, 4,4'-biphenyl, or 4,4'-diphenylethane, and R' is a chiral branched alkyl group such as the 1-substituted cases 1-methylpropyl through 1-methyloctyl or 2-substituted case such as 2-methylbutyl. These materials or their mixtures possess ferroelectric phases and as such are of interest for electro-optical applications. In certain cases specific materials are of particular interest due to the existence of stable ferroelectric phases near room temperature with large polarization density and fast electro-optic response.

Abstract: Block copolymers of polyimide and poly (phenylquinoxaline) have been synthesized. They are useful, particularly as dielectric layers in thin film multilayer structures. The most preferred embodiments are formed from polyimides which are those from pyromellitic dianhydride and oxydianiline. The most preferred poly (phenylquinoxaline) is a monofunctional oligomer, which yields the best microstructure.

Abstract: An aqueous base developable negative resist composition comprising a phenolic resin, a radio-chemical acid generator and a small molecule which upon irradication and postbake reacts with the phenolic resin to decrease its rate of dissolution.

Abstract: Photoresist images are made resistant to reactive ion etching by treating them with a poly(dimethylsilazane).

Abstract: Stable, bulk electrical superconductors are prepared by heating mixed metal oxides in the presence of oxygen in a closed vessel in a preheated oven for 1-5 hours at 850.degree.-900.degree. C. The final oxides are in the molar ratio Ti.sub.0.6-1.1 Ca.sub.2-3 Ba.sub.0.75-1.25 Cu.sub.2-3 O.sub.(5+.delta.)-(9+.delta.), where .delta. is less than one.

Abstract: Substrates are coated with durable, adherent and continuous superconductive coatings by applying thereto a suspension of finely divided metal, finely divided ceramic superconducting above 77.degree. K., and fluorinated polymer in an organic solvent. The resulting coatings are adherent, durable and superconducting above 77.degree. K.

Abstract: A triarylsulfonium salt is prepared in high yield and high purity by a two-step process involving a aryl Grignard reagent reacted with a diarylsulfoxide in a solvent which is a mixture of aliphatic and aromatic hydrocarbons, followed by a second step which is metathesis with ZMF.sub.6, where Z is a metal or metal-like anion, and M is antimony, arsenic or phosphorus, preferably employing an ammonium salt and carried out in a non-aqueous solvent.

Abstract: A cartridge for electrophotographic printing which contains a reciprocating photoconductor ribbon, a charging station, a developer station, a transfer station and a retractable cleaner blade. In operation, the photoconductor ribbon is directed past the charging station, through the developer station, and through the transfer station. The cleaner blade is moved into contact with the photoconductor ribbon.

Abstract: A roll for hot fusing having a coating comprising a cross-linked elastomeric random copolymer of dimethylsiloxane and diphenylsiloxane and three additives, (1) from 40 to 55% by weight of small zinc oxide particles, (2) from 5 to 10% by weight of small graphite particles and (3) from 1 to 5% by weight of ceric dioxide particles.

Abstract: Thin films of polyimide having electrical insulation, low thermal expansion, high glass transition temperature, and good adhesion are made by dispersing fine domains of relatively flexible polyimide which is fluorinated in a matrix of relatively rigid polyimide.

Abstract: Diamond films are deposited at substrates below temperatures of 400.degree. C. by chemical vapor deposition using a high powered pulsed laser and a vapor which is an aliphatic carboxylic acid or an aromatic carboxylic anhydride.

Abstract: An organic photoconductor comprising a charge generation layer and on top thereof a charge transport layer having a higher concentration of charge transport molecules nearer the charge generation layer than in the topmost portion.

Abstract: Thin-film electrical circuits are interconnected by a process comprising the steps of partially ablating the existing thin-film conductor at the connection point(s) by means of a pulsed laser and depositing a thin-film metal interconnection over the desired area, which includes the area(s) of the existing thin-film circuit that were exposed the pulsed laser.

Abstract: A thin film magnetic head is provided in which the electrical insulation surrounding the conductive coil comprises a photosensitive resin which has been crosslinked by a thermally activated crosslinking agent or promotor. The addition of the thermally activated crosslinking agent or promotor greatly reduces both the cure temperature and cure time and results in enhanced dimensional stability without any deleterious effects.

Abstract: Fatigue in organic photoconductors in which the charge transport layer is a source of acidic protons is reduced by including in the charge transport layer a small amount of a nonvolatile basic amine soluble in a common solvent with a charge transport material and the binder of the charge transport layer.

Abstract: Stable, bulk electrical superconductors are prepared by heating mixed metal oxides in the presence of oxygen in a closed vessel in a preheated oven for 1-5 hours at 850.degree.-900.degree. C. The final oxides are in the molar ratio Tol.sub.0.6-1.1 Ca.sub.2-3 Ba.sub.0.75-1.25 Cu.sub.2-3 O.sub.(5+.delta.)-(9+.delta.), where .delta. is less than one.

Abstract: A composition for the application of a planar polyimide coating having a glass transition temperature above 300.degree. C. comprises a solution in an anhydrous, aprotic solvent of an aromatic diamine and a dialkyldihydrogen pyromellitate which is more than 90% meta isomer.