Abstract: A method for repairing defects in the form of discontinuities in a photomask pattern in or on a glass substrate by means of electroless deposition of a nickel-containing coating on the surface of a glass substrate is disclosed.

Abstract: Printing characteristics such as ink receptivity and printing endurance of a lithographic printing plate which utilizes as ink receptive areas the photographically formed silver or silver halide image can be improved by treating said printing plate in the presence of a polymer compound containing in its principal and/or side chain an aromatic nucleus bearing a hydrophilic substituent group, said printing plate containing in at least one of its constitutive layers as hydrophilic high molecular weight-binder.

Abstract: A method for repairing defects in the form of discontinuities in a photomask pattern in or on a glass substrate by means of electroless deposition of a nickel-containing coating on the surface of a glass substrate is disclosed.

Abstract: A laser recording medium consisting of shiny silver particles in a colloid matrix having at least one superposed layer of colloid matrix containing dispersed metal particles other than silver to lower the reflectivity of the medium.

Abstract: The specification describes a mask structure comprising a resist pattern having a controlled line profile, for use in defining a predetermined region on and above a substrate. First, a composite electron-beam sensitive resist comprising a bottom layer of resist, a middle layer of a chosen conductive material, and a top layer of resist is formed on a selected substrate. The substrate with the composite resist is exposed to a beam of electrons to simultaneously define a predetermined pattern in the top and bottom layers of the resist. Next, a first chosen solvent is applied for a first predetermined period of time to develop the pattern in the top layer of resist, with the layer of conductive material protecting the bottom layer of resist from exposure to the first chosen solvent. Then, the portion of the conductive layer which is exposed after development of the top resist layer, is removed.

Abstract: A method of depositing X-ray absorber patterns on a mask membrane to achieve minimum pattern feature dimensions less than 1 .mu.m. The membrane is covered with an ultraviolet (VU) sensitive photoresist which carries a thin metallic film. The metallic film is coated with an electron beam resist. The electron beam resist is exposed to the desired pattern by an electron beam. After development, the metal film is etched through the remaining electron beam resist. This forms a stencil overlying the lower UV photoresist layer which is then exposed by an ultraviolet or soft X-ray source. After development, an X-ray absorber, such as gold, is deposited on the membrane. The final exposure step may be done by means of a point source of radiation. The X-ray absorbers will then have sloping walls to prevent shadowing of the X-ray source.

Abstract: A gold-toning neutron-activation process for intensifying or amplifying the ontrast in extremely weak images in photographic negatives where the exposure level may be as low as 1.5% of optimum. The method involves three main steps: (a) gold toning of the silver image on the negative; (b) neutron activation of the gold image to produce radioisotopes; and (c) transferring the image to an unexposed autoradiographic film as the ionizing radiation from the radioactive gold exposes the film to produce intensification of the contrast.

Abstract: A broadband laser recording and data storage medium for direct read after writing, formed from a photosensitive silver-halide emulsion in four steps. First, a non-saturating actinic radiation exposure is used to create latent images. A normal photographic development is used to produce a medium of gray neutral density. The surface of the remaining silver halide is fogged in a water or alcohol based solution to create a very thin layer of silver precipitating nuclei on the surface. Finally, a single-step, negative silver diffusion transfer process is used to dissolve the unexposed and undeveloped silver halide, forming silver ion complexes.

Abstract: A method of replicating data from a master transmissive optical data storage medium whereby the resulting product displays areas of low reflectivity and high reflectivity. Actinic radiation is shone through transmissive areas onto a silver-halide emulsion photosensitive medium. The photosensitive medium is then chemically developed black. Next, the developed medium is fogged to create a latent image layer of silver precipitating nuclei. Finally, the fogged medium is placed in a monobath comprising a weak silver-halide reducing agent and a rapid-acting silver-halide solvent for partial chemical development and substantial physical development. The resulting product displays areas of low reflectivity, which correspond to the transmissive areas of the master, in a reflective field.

Abstract: This invention relates to the production of information carriers on which the information is recorded along a track; the process of making the information carrier comprises a first step of materializing the track itself before recording any information by forming a groove in an auxiliary layer, the track thus being capable of being optically detected, and a second step of recording the information in a photosensitive layer in contact with the auxiliary layer along the track previously formed.

Abstract: A broadband laser recording and data storage medium for direct read after writing, formed from a photosensitive silver-halide emulsion in four steps. First, a non-saturating actinic radiation exposure is used to create latent images. A normal photographic development is used to produce a medium of gray neutral density. The surface of the remaining silver halide is fogged in a water or alcohol based solution to create a very thin layer of silver precipitating nuclei on the surface. Finally, a single-step, negative silver diffusion transfer process is used to dissolve the unexposed and undeveloped silver halide, forming silver ion complexes.

Abstract: A reflective laser recording and data storage medium, for direct reading after writing, formed from a photosensitive silver-halide emulsion wherein a surface latent image exposure on the recording area forms a depthwise gradient of silver nuclei. A single step negative silver diffusion transfer process is used to develop silver nuclei of the latent image and dissolve unexposed silver halide elsewhere, forming silver ion complexes. These complexes are transported by diffusion transfer to the developing silver nuclei sites where silver is precipitated and adsorbed to form a high concentration of non-filamentary particles at a surface of a low melting temperature dielectric matrix which is highly reflective of light and electrically non-conducting.

Abstract: A reflective laser recording and data storage medium, for direct reading after writing, formed from a photosensitive silver-halide emulsion wherein a surface latent image exposure on the recording area forms a depthwise gradient of silver nuclei. A single step negative silver diffusion transfer process is used to develop silver nuclei of the latent image and dissolve unexposed silver halide elsewhere, forming silver ion complexes. These complexes are transported by diffusion transfer to the developing silver nuclei sites where silver is precipitated and adsorbed to form a high concentration of non-filamentary particles at a surface of a low melting temperature dielectric colloid matrix which is highly reflective of light and electrically non-conducting.

Abstract: Abrasion resistant coatings are comprised of a crosslinked polymeric coating comprising at least 15% by weight of said polymer derived from a polyacrylate material having a heterocyclic nucleus therein.

Abstract: By flow-melting low-melting point electroplated metal structures, each corresponding to a white-manifesting region of the embossing master, any originally re-entrant shaped structure becomes non-re-entrant. Further, the flow-melting provides a brighter white color capability for the filter embossed in a thermoplastic film.

Abstract: A photomask comprising a substrate pervious to light having one or more transparent islands and one or more opaque islands formed on one surface thereof, the thickness of the transparent islands being greater than that of the opaque islands. When this photomask is used to pattern a photoresist, the gas evolved from the photoresist can be effectively led to the outside, so that the quality of contact between the semiconductor wafer and the photomask is improved.

Abstract: A photographic process and article resulting therefrom which utilizes multiple images that are transferred to a single image receiving surface. In the preferred embodiment the images are formed on the receiving surface by diffusion transfer development and each image on the receiving surface is electrically conductive. In the areas in which the images overlap, the electrical resistivity is lower than in the nonoverlapped areas. Electrical resistivity in a given area can be controlled by the number of images transferred to the receiving surface. One application of the process is the formation of electrical components such as, printed circuit boards, by photographic diffusion transfer development.