Abstract: A function separation type photoconductor for use in electrophotography comprises an electroconductive substrate, a carrier generation layer vapor deposited on the substrate and a carrier transport layer formed on the carrier generation layer. The carrier generation layer is made of an indium phthalocyanine having the general formula ##STR1## wherein Me represents indium, and X is a halogen selected from the group consisting of chlorine, bromine and iodine.

Abstract: Disclosed is a thin film circuit substrate which comprises an electrically insulating substrate, and at least one conductor layer and one protecting layer which are formed on the substrate, the insulating substrate having a surface roughness which is equal to or smaller than 0.1 .mu.Ra when measured as a center line average height. The thin film circuit substrate is suitable for use, for example, in a thermal head.

Abstract: A method of fabricating a print head for use in a thermal printer is similar to the additive (or lift-off) method of pattern transfer utilizing semiconductor fabrication technology except that a metal film is used instead of photoresist conventionally used. The method is initiated by glazing a substrate. Then, nickel is sputtered on the glazed substrate. That portion of the formed nickel film that lies under the heater portion of the head is removed by photoetching. Subsequently, the remaining nickel film is plated with nickel, and a chemically stable and heat-resistant insulator, such as Ta.sub.2 O.sub.5, is sputtered on the plated laminate. Thereafter, the plating layer and the nickel film are removed to leave the portion of the insulator layer that lies under the heater portion. The remaining layer protrudes to the heater portion.

Abstract: A thermal head having a heat-generating resistor layer, a power feeding conductor layer, and a protective layer superposed on an electrically insulating layer, acquires improved quality by forming the heat-generating resistor layer with an alloy consisting of tantalum, a high-melting metal, and nitrogen. The thermal head of improved quality is produced by spattering a composite target consisting of tantalum and the high-melting metal in a mixed gas consisting of nitrogen and argon.The high-melting metal is at least one member selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, chromium, molybdenum, and tungsten.

Abstract: A photoconductor for electrophotography prepared by forming a carrier generation layer made from an organic photoconducting material on a conductive substrate and further forming a carrier transport layer on the carrier generation layer wherein the organic photoconducting material has a basic structure corresponding to phthalocyanine having the following general formula: ##STR1## wherein a central metal Me is selected from the group consisting of indium, gallium and aluminum, and X is a combined halogen, and the above phthalocyanine is the one in which some hydrogen of benzene rings positioned around the phthalocyanine ring of the above basic structure are substituted by the same halogen with the combined halogen, and furthermore the above organic photoconducting material may be a mixture of the former phthalocyanine and the latter phthalocyanine.