Abstract: Disclosed is a reflective support for photography, comprising a polyester film containing titanium oxide particles, wherein the particle size distribution of the titanium oxide particles with particle sizes of 0.05 .mu.m or more satisfies the formula shown below:N/.gamma..gtoreq.50 (I)N: number of the titanium oxide particles with particle sizes of 0.05 .mu.m within 10 .XI.m.times.10 .mu.m area in a transmission type electronmicrography photographed on a film sliced into a thin strip of about 2,000 .ANG. thick;.gamma.: the ratio of d.sub.80 to d.sub.20 when the particle distribution of the titanium oxide particles is measured by the above transmission type electronmicrography photographed:.gamma.=d.sub.80 /d.sub.20d.sub.80, d.sub.20 : respective particle sizes (.mu.m) when the integrated distribution of number of titanium oxide particles is 80% and 20%. Disclosed is also a photographic printing paper comprising the reflective support.

Abstract: A process for producing a polyester resin composition containing at least 10 wt % of a white inorganic pigment dispersed in a polyester resin, which comprises kneading the polyester resin with the white inorganic pigment and thereafter subjecting the blend to a polycondensation reaction at a temperature ranging from the melting point of the polyester up to 300.degree. C. and at a reduced pressure of not higher than 5 Torr, is disclosed.

Abstract: A process for producing a titanium dioxide containing polyester resin composition from which a white film useful as a reflective photographic support can be prepared is disclosed.Said process is performed by first supplying a polyester resin and titanium dioxide into a continuous kneading extruder, kneading them in molten state, and supplying an additional charge of the polyester resin to give a desired concentration of the titanium dioxide, wherein the first supplied polyester resin has an intrinsic viscosity of at least 0.40, said titanium dioxide having an average particle size of 0.1-0.5 .mu.m and a water content of no more than 0.5% and having been surface-treated with an aluminum compound and/or a silicon compound, and the concentration of titanium dioxide being in the range of 20-70 wt % when kneaded with the polyester resin in molten state.

Abstract: A base for reflection-photographic elements is disclosed which has a biaxially stretched film support, said film comprising polyester resin and titanium dioxide, wherein said film contains at least one compound represented by the following general formula (I) or (II). ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 each represents a hydrogen atom, a halogen atom, an unsubstituted or substituted alkyl group, an alkoxy group, a dialkylamino group or an aryl group, provided that R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may cooperate to form a ring. ##STR2## wherein A represents --CH.dbd.CH--, ##STR3## and R.sub.6, R.sub.7, R.sub.8 and R.sub.9 each represents a hydrogen atom, a halogen atom, an unsubstituted or substituted alkyl group, an alkoxy group, a dialkylamino group or an aryl group, provided that R.sub.6 and R.sub.7, and R.sub.8 and R.sub.9 each may cooperate to form a ring.

Abstract: A method of manufacturing a photographic reflecting support wherein chips and/or resin scraps of a thermoplastic resin are heat-treated in a vacuum and fed into an extruder to be melted and then extruded in the form of a sheet out of the die of the extruder. The resulting sheet is then cooled and solidified on a cooled casting drum and stretched 6 to 16 times in terms of area, lengthwise and then widthwise or vice versa, or biaxially at the same time, at a temperature within the range of from a temperature not lower than the glass transition point of the thermoplastic resin to a temperature not higher than 150.degree. C. The stretched sheet is then thermoset at a temperature within the range of from a temperature not lower than 170.degree. C. to a temperature of the melting point of the thermoplastic resin and the resulting photographic reflecting support is made from 40 .mu.m to 300 .mu.m in thickness and not higher than 20% in visible-wave-length range transmittance.

Abstract: A support for photographic use comprising a polyester film is disclosed which contains at least one compound of the following formula (I) and at least one quaternary ammonium salt of the following formula (II): ##STR1## a hydroxyl group, a nitro group, an amino group or a hydrogen atom; R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are each a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, an aryloxy group, an aralkoxy group, a hydroxyalkyl group, --(OCH.sub.2).sub.m OH (m is an integer or 1 to 4) or ##STR2## B, C and D are not simultaneously at least one member selected from the group consisting of a hydrogen atom, a nitro group and an amino group); ##STR3## (wherein R.sub.6, R.sub.7, R.sub.8 and R.sub.9 are each an alkyl group, an aralkyl group or an allyl group; X is an anion; and n represents the number of charges on X).