Abstract: A method of manufacturing a thin-film field-emission electron source which is of a sandwich structure of a substrate - metallic film-insulating film - metallic film and which has at least one minute cavity and a field-emitter of, for example, a conical shape within the cavity, comprises the steps of (i) forming on a substrate a first layer of metallic film pattern for current supply, (ii) depositing a second layer film made of an electron emissive material onto the entire area of the substrate provided with the first layer, and thereafter subjecting the second layer film to a mesa etch by a photoetching process, to form a conical emitter on the first layer film, (iii) forming a third layer made of an insulating material, the third layer having a height substantially equal to the level of a tip portion of the emitter, (iv) forming a fourth layer of metallic film pattern as an accelerating electrode, and (v) etching the third layer, so as to expose the extremity of the emitter.

Abstract: A D.C. glow discharge is applied to a heated glass substrate coated with a conductive layer in the form of a pattern in an evacuated chamber, to which chamber certain amounts of oxygen and a volatile tin composition have been added. A glass substrate is produced which is coated with a patterned, transparent, conductive coating of tin oxide, wherein the surface region of the glass has been depleted of alkali metal ions.

Abstract: A striped dichroic filter having a substrate with a surface. A first set of spaced parallel stripes capable of reflecting at least one color are carried by the surface. A second set of spaced parallel stripes capable of reflecting at least one different color different from said one color reflected by the first set of stripes is also carried by the surface. The first and second sets of stripes are disposed so that they are substantially parallel to each other and so that they are in abutting relationship with substantially no space or overlap between adjacent stripes. Third and additional sets of stripes for reflecting other colors may be provided.In the method for making the striped dichroic filter, a dual lift-off is used which utilizes both metal and resist lift-off techniques that are mutually exclusive.

Abstract: A process for forming an electrical resistance heater on a metal substrate. At least one layer of a composition of a polyamic acid or polyamide-imide polymer and a solvent therefor is applied to a surface of the substrate. The substrate and layer are heated to remove the solvent and to effect only partial curing of the polymer thereby to form a partially cured insulating layer. A composition of a mixture of a polyamic acid or polyamide-imide polymer, a solvent therefor and flakes of an electrical conductivity-modifying material is applied to the insulating layer thereby to form an overlying layer having an electrical conductivity substantially greater then that of the insulating layer. The substrate, insulating layer and overlying layer are thereafter heated for a period of time and at a temperature sufficient to at least partially cure the overlying layer.

Abstract: A method for preparing coatings, particularly imaged surfaces such as photoresists, printing plates, etc. which includes coating the surface of a substrate with a solid curable composition containing liquid polyene and solid styrene-allyl alcohol copolymer based polythiol components, curing the composition by exposing selected areas thereof to a free radical generating source, e.g. actinic radiation and removing, e.g., by dissolving, the uncured, unexposed areas of the curable composition to bare the underlying substrate. The solid polythiol is a reaction product of a copolymer of styrene-allyl alcohol and a mercaptocarboxylic acid, e.g. .beta.-mercaptopropionic acid.