Konica Corporation

Hiromitsu Araki

Takatoshi Yajima

Eiichi Ueda

Hiroshi Naito

Hideyuki Kobayashi

Kenji Nakanishi

Tetsutaro Hashimura

Yoshioki Okubo

Tohru Kobayashi

Kazuo Kato

Toru Kobayashi

Toshiaki Yamazaki

Masahito Takada

Kazuto Kiyohara

Ichiya Harada

Yoshioki Ohkubo

Disclosed is a film constituted of a polyester, said film having a degree of roll set curl of not higher than 135 m.sup.-1 after being subjected to heat treatment, and having a degree of recovery curl of not higher than 45 m.sup.-1 after being subjected to hot water bath treatment.

Polyester layer support for photographic material

A support for photographic use comprised of at least two polyester layers is disclosed, which comprises a first layer containing a first polyester and a second layer containing a second polyester adjacent to the first layer, the first polyester comprising a first monomer unit from a polyalkylene glycol and a second monomer unit from an aromatic dicarboxylic acid having a metal sulfonate group, wherein the difference between the second monomer unit content of the first polyester and that of the second polyester, .DELTA.SIP is not more than 5.5 mol %, the second monomer unit content being expressed based on the total content of monomer units from dicarboxylic acids contained in the polymer.

Photographic support

A method of processing a silver halide color light-sensitive material is disclosed. The material has a silver halide emulsion layer on one side of a photographic support of less than 100 .mu.m thickness and a backing layer on the other side and is processed while being conveyed in a developing machine, wherein the conveying tension in the processing machine is not more than 700 g, and the following formula applies:

Processing method for silver halide color light-sensitive material

Disclosed is a support for a photographic material which comprises a multilayer film in which a layer of a copolymerized polyester is laminated on at least one surface of a polyester layer, wherein the copolymerized polyester contains an aromatic dicarboxylic acid having a metal sulfonate group as a copolymer component in an amount of 2 to 7 mole % based on all ester bond units and further a polyalkylene glycol as a copolymer component in an amount of 3 to 10% by weight based on the total weight of a polyester which is a reaction product.

Support for photographic material

Multilayer polyester support of photographic material

A silver halide photographic light-sensitive material comprises a polyester film support having curling in the lateral direction, a first side of the support being curled outwardly and a second side of the support being curled inwardly, a silver halide emulsion layer provided on the first side of the support, and a backing layer provided on the second side of the support, the ratio of the total gelatin content per unit area of the backing layer to that of the silver halide emulsion layer being within the range of from 0.05 to 0.7.

Silver halide color photographic light-sensitive material

A silver halide color photographic light-sensitive material in roll form comprises a support, and provided thereon, a silver halide emulsion layer and, on the side of the support opposite the silver halide emulsion layer, a backing layer containing gelatin and a hardener, wherein the backing layer has a degree of swelling of 250% or less represented by the following equation:

Silver halide color photographic light-sensitive material in roll form

A method for manufacturing a polyester film is disclosed which comprises a polyester film before completion of orienting crystalization and, provided thereon, a sublayer comprising a copolymer containing 70 to 99.5 wt % of vinylidene chloride, and an antistatic layer comprising an ionic polymer, in that order. A coating solution is coated on the polyester film to form the sublayer with a dry thickness of 1 to 20 g/m.sup.2. The total solid content of the coating solution is not less than 4 wt %, and the coating solution contains a latex of the copolymer with an average particle size of 0.05 to 0.3 .mu.m. Heat is applied at a temperature not less than 30.degree. higher than the melting point of the copolymer, and the antistatic layer is formed on the sublayer.

Method of manufacturing antistatic polyester film

Disclosed are a white polyester composition comprising a polyester containing a titanium dioxide, and the titanium dioxide being one subjected to a heat treatment at a temperature of 350.degree. C. or higher after at least one of an inorganic surface treatment and an organic surface treatment, and a support for photography having a polyester layer comprising the white polyester composition.

Growing community of inventors

Hino, Japan

Hiromitsu Araki