JPH0553245A - Photographic sensitive material - Google Patents

Abstract

PURPOSE:To provide a photographic sensitive material having excellent adhesive property of the polyester base to hydrophilic colloid and applicable to use in the form of a roll. CONSTITUTION:In this photographic sensitive material with an underlayer contg. a polyester copolymer on at least one side of the polyester film base and at least one silver halide emulsion layer on the underlayer, the water content of the polyester film is >=0.5wt.%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic light-sensitive material having a subbing layer excellent in adhesion between a polyester film and a hydrophilic colloid, especially gelatin.

[0002]

Photographic photosensitive materials are generally prepared by providing at least one photographic photosensitive layer on a plastic film support. As this plastic film, triacetyl cellulose (hereinafter referred to as “TA
A fiber-based polymer typified by "C") and a polyester-based polymer typified by polyethylene terephthalate are used.

Generally, photographic light-sensitive materials are classified into a sheet-like form and a roll-like form such as an X-ray film, a plate-making film and a cut film. A typical roll film is a color or black-and-white negative film which is stored in a cartridge with a width of 35 mm or less and which is loaded into a general camera and used for photographing.

Conventionally, TA has been mainly used for roll films.
A C film support has been used. The greatest feature of the TAC film as a photographic support is that it has no optical anisotropy and high transparency, and that it also has excellent properties in decurling after development processing.

By the way, in recent years, the applications of photographic light-sensitive materials have been diversified, and the speed of film transport at the time of photographing, the high magnification of photographing, and the miniaturization of photographing apparatus have been remarkably advanced. To that end, as a support for a photographic light-sensitive material,
Properties such as strength, dimensional stability and thinning are required.

However, since TAC has a rigid molecular structure, the film quality of the TAC film after film formation is fragile and it cannot be used for these purposes at present.

On the other hand, the PET film has excellent productivity, mechanical strength, and dimensional stability, and therefore TA film.
It has been considered as an alternative to C film.

However, the PET film, which is widely used as a photographic light-sensitive material, has a strong curl and curl that remains in a roll form, so that it is difficult to handle after development and has the above-mentioned excellent properties. However, there was a problem that it could not be used.

On the other hand, in the use of photographic light-sensitive materials, PET is usually used.
By providing an undercoat layer between the support and the surface layer agent, the adhesion between the two is improved.

Conventionally, in order to improve the adhesiveness to various plastics, particularly hydrophilic resins such as gelatin, water-soluble or water-dispersible as an undercoat layer due to the advantages of working environment and the need for explosion-proof equipment. It has been proposed to use a hydrophilic polyester copolymer. As such an example, for example, in JP-B-47-40873, in order to dissipate water, 8 mol% or more of ester-forming metal sulfonate-containing compound with respect to all acid components and 20 mol of polyethylene glycol with respect to all glycol components are used. % Or more copolymers are described, but the use of these as the undercoat layer is the water resistance of the undercoat layer,
That is, it can be easily estimated that the water resistance of the adhesive is reduced. Further, in JP-B-56-5476, a saturated linear aliphatic dicarboxylic acid having a methylene group number of 4 to 8 is used for the purpose of improving adhesiveness, but in this case also, the water resistance of the undercoat layer is sufficient. Not a thing.

On the other hand, JP-A-1-43775 describes a method of in-line undercoating an aqueous solution, emulsion or dispersion of a polyester resin having a group of an organic sulfonic acid sodium or potassium salt in the molecule. However, when it is used as a roll-shaped photographic light-sensitive material under the recent severe transport, photographing and development processing conditions, it does not have sufficient adhesiveness.

[0012]

Although any of the above-mentioned subbing layers containing the polyester copolymer can be obtained relatively easily in terms of adhesion between the PET support and the hydrophilic colloid, particularly gelatin, it is a photograph in roll form. When the photosensitive material was exposed to harsh conditions such as photography, development processing, and baking, sufficient adhesiveness could not be maintained.

The present invention has been made in view of such conventional problems, and the first object thereof is excellent in adhesiveness to a support, and also in adhesiveness to a hydrophilic colloid and its water resistance. It is to obtain a polyester film support having an undercoat layer.

A second object of the present invention is to provide a silver halide photographic light-sensitive material which has a polyester film support having excellent mechanical properties and can be used in the roll form.

[0015]

Means for Solving the Problems As a result of intensive studies conducted by the present inventors on the above problems, the above object of the present invention was to provide an undercoat layer containing a polyester copolymer on at least one surface of a polyester film support. And a photographic light-sensitive material having at least one silver halide emulsion layer on the undercoat layer, the water content of the polyester film is
It has been found to be achieved by a photographic light-sensitive material which is 0.5% by weight or more.

The present invention will be described in detail below.

The water content of the polyester film of the present invention is measured by adjusting the humidity of the film at 23 ° C., 30% RH for 3 hours, immersing the film in distilled water at 23 ° C. for 15 minutes, and then trace amount of water. Total (for example, CA-02 manufactured by Mitsubishi Kasei Co., Ltd.)
Type) and a drying temperature of 150 ° C.

The polyester film of the present invention is characterized in that the water content measured by such a method is 0.5% by weight or more, preferably 0.6 to 4.0% by weight.

In the present invention, the preferred chemical component of the polyester film support is an aromatic dibasic acid,
In particular, it is a copolyester system containing terephthalic acid and glycol as main components. As the component which is copolymerized with the terephthalic acid component and the glycol component, an aromatic dicarboxylic acid having a metal salt of sulfonic acid and polyethylene glycol are preferable.

As the aromatic dicarboxylic acid having a metal salt of sulfonic acid, 5-sodium sulfoisophthalic acid,
2-sodium sulfoterephthalic acid, 6-naphthalenedicarboxylic acid and compounds obtained by substituting these sodium with other metals such as potassium and lithium, and ester compounds thereof are mentioned. In the present invention, 5-sodium sulfoisophthalic acid is particularly preferable. Alternatively, its ester compound is preferable. As the polyethylene glycol, those having a repeating unit of ethylene glycol of 2 to 500 are preferable, and those having a repeating unit of 50 to 150 are particularly preferable.

In addition to these compounds, the acid component is, for example, isophthalic acid or its ester compound, adipic acid or its ester compound, and the alcohol component is, for example, propylene glycol, butanediol, neopentyl glycol, 1,4-cyclohexane. It may contain a compound such as diol or diethylene glycol. The aromatic dicarboxylic acid having a metal salt of sulfonic acid is preferably 2 with respect to the terephthalic acid component as the main raw material.
.About.20 mol%, particularly preferably 4 to 15 mol%. Polyethylene glycol is the main raw material for the alcohol component. The ethylene glycol component is preferably added in an amount of 1 to 15% by weight, particularly preferably 3 to 10% by weight.

At least the above compounds can be reacted to obtain a polyester by a known synthetic method. The support is formed from the obtained polyester as follows. That is, the obtained resin is dried and then melt-extruded to obtain an unstretched sheet, which is then vertically stretched, horizontally stretched, and heat-set to obtain a target film. The draw ratio is not particularly limited, but usually 2 to 5 times is appropriate. The temperature during stretching is not particularly limited, but 50 to 140 ° C is suitable. The heat setting temperature is not particularly limited, but 150 to 220 ° C is suitable.

A dye is preferably added to the polyester support of the present invention in order to prevent light piping. The dye to be used is not particularly limited, but it is preferable that the color tone is gray dyeing and that the polyester has excellent heat resistance at the film forming temperature. As the dye, the dyes described in Diaresin manufactured by Mitsubishi Kasei Co., Kayaset manufactured by Nippon Kayaku Co., Ltd., US Pat. No. 3,822,132 and the like can be used alone or in combination.

The polyester copolymer applicable in the present invention is preferably a polyester copolymer having an organic sulfonate group in the molecule. In order to introduce such a sulfonate group into the polyester molecule, for example, 5-Nasulfoisophthalic acid, 4-Nasulfoisophthalic acid, 2-Nasulfoterephthalic acid, 5-Ksulfoisophthalic acid, 4-Ksulfoisophthalic acid. Acid, 2-K sulfoterephthalic acid, Na sulfosuccinic acid and the like can be preferably used. The polyvalent carboxylic acid or polyhydric alcohol having such a sulfonate group is contained in an amount of 2 to 50 mol%, preferably 3 to 50%, based on the total polyvalent carboxylic acid component or polyhydric alcohol component.
It accounts for 20 mol%.

Other components used as the polyvalent carboxylic acid are, for example, terephthalic acid, isophthalic acid, phthalic acid, phthalic anhydride, 2,6-naphthalenedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, adipic acid, sebacic acid and tricarboxylic acid. Mellitic acid, pyromellitic acid, dimer acid, itaconic acid and the like can be used.

Examples of the polyhydric alcohol component include ethylene glycol, 1,4-butanediol, diethylene glycol, dipropylene glycol, 1,6-hexanediol, 1,4-cyclohexanedimethanol, xylylene glycol, dimethylolpropionic acid, Glycerin, trimethylolpropane, poly (ethylene oxide) glycol, poly (tetramethylene oxide) glycol, etc. can be used. Further, hydroxycarboxylic acids such as p-hydroxybenzoic acid and p- (β-hydroxyethoxy) benzoic acid can be used together with these components.

The polyester copolymer is synthesized from the above-mentioned polyvalent carboxylic acid or its ester-forming derivative and the above-mentioned polyhydric alcohol or its ester-forming derivative by a known method.

As a method of applying the polyester copolymer of the present invention as an undercoat layer, the compound is water or an organic solvent (for example, methanol, ethanol, acetone, methyl ethyl ketone, ethyl acetate, acetonitrile, dioxane, dimethylformamide, formamide, (Dimethyl sulfoxide, methyl cellosolve, ethyl cellosolve, etc.)
Alternatively, it may be used by dissolving it in a mixed solvent of these, or by using water as a medium to prepare an emulsion, dispersion or suspension, in which case a small amount of another medium such as an organic solvent is mixed with water. Can be made

In the present invention, the polyester copolymer is preferably used as an aqueous solution or an aqueous dispersion.

The subbing coating solution containing an aqueous solution or aqueous dispersion of these polyester copolymers further contains a surfactant, an antistatic agent, a matting agent, and water-soluble or water-soluble materials other than the polyester copolymer of the present invention. The dispersible polymer may be added within a range that does not impair the effects of the present invention.

The solid content concentration in the above-mentioned subbing coating liquid is usually preferably 15% by weight or less, more preferably 10% by weight.
It is below.

The coating amount is preferably 1 to 30 g, and more preferably 5 to 25 g in terms of coating liquid weight per 1 m ² of film.

As a method for applying the undercoat layer of the present invention to the polyester film support of the present invention, any known coating method such as roll coating method, gravure coating method, roll brushing method, spray coating, air knife coating is used. ,
The impregnation method and the curtain coating method can be applied alone or in combination.

In the step of applying the coating, it is applied to an unstretched film of the polyester for a support of the present invention, to a uniaxially stretched film after vertical stretching or horizontal stretching, or to vertical stretching and horizontal stretching. Although any step of applying to the biaxially stretched film after stretching may be selected, it is preferable that the film is pre-stretched and oriented in the support film forming line, that is, the film in the unstretched state or the uniaxially stretched state is subbed in the present invention. It is preferable from the economical point of view that after the layer is applied, it is dried and then biaxially stretched or uniaxially stretched and heat set to complete the crystal orientation.

In the present invention, a photographic light-sensitive material can be produced by providing at least one silver halide emulsion layer on the undercoat layer of the polyester film having the above-mentioned undercoat layer.

Examples of the hydrophilic colloid used for the hydrophilic colloid layer in the above photographic light-sensitive material include proteins such as gelatin, albumin and casein; cellulose derivatives such as hydroxyethyl cellulose, carboxymethyl cellulose and cellulose sulfates, sodium alginate, Sugar derivatives such as starch derivatives; polyvinyl alcohol, polyvinyl alcohol partial acetal, poly-
N-vinylpyrrolidone, polyacrylic acid, polymethacrylic acid, polyacrylamide, polyvinylimidazole,
A variety of synthetic hydrophilic polymer substances such as a single or copolymer such as polyvinylpyrazole can be used, but gelatin is preferably used. In addition to lime-processed gelatin, acid-processed gelatin and Bull Society
Science Photography Japan (Bull. Soc.
Sci. Phot. Japan, No. 16, p. 30, p. 30 (1966), an oxygen-treated gelatin may be used, or a hydrolyzed product or an enzymatically decomposed product of gelatin may be used. A derivative, a graft polymer of gelatin and another polymer is also included.

In the photographic light-sensitive material of the present invention, as the silver halide emulsion used in at least one silver halide emulsion layer provided above the undercoat layer, various ordinary silver halide emulsions can be optionally used. You can The emulsion can be chemically sensitized by a conventional method, and can be optically sensitized to a desired wavelength region by using a sensitizing dye.

Further, an antifoggant, a stabilizer, a hardener and the like can be added to the silver halide emulsion. As the binder of the emulsion, the hydrophilic colloid as described above is used, but gelatin is preferably used.

In the silver halide emulsion layer and other hydrophilic colloid layers, the film strength can be increased by using a hardening agent. Such hardening agents include aldehyde type, aziridine type, isoxazole type and epoxy type. A system hardener, a vinylsulfone system, an acryloyl system, a carbodiimide system, a triazine system, a polymer system, a maleimide system, an acetylene system, and a methanesulfonic acid ester system hardener can be used alone or in combination. Also, plasticizers, dispersions of water-insoluble or sparingly soluble synthetic polymers (latex), couplers, coating aids, antistatic agents, formalin scavengers, optical brighteners, matting agents, lubricants, image stabilizers,
A surfactant, an antifoggant, a development accelerator, a development retarder, a bleaching accelerator and the like may be contained.

In the photographic light-sensitive material of the present invention, as the hydrophilic colloid layer other than the silver halide emulsion layer, auxiliary layers such as a protective layer, a filter layer, a back coating layer, an antihalation layer, an antiirradiation layer and an intermediate layer. Etc.

As the silver halide light-sensitive material of the present invention, a silver halide such as an ordinary black-and-white silver halide light-sensitive material used in a roll form, an ordinary multi-layer color light-sensitive material (eg color reversal film, color negative film, etc.) Photosensitive materials can be mentioned.

The silver halide photographic light-sensitive material of the present invention can be subjected to various development treatments to form an image in the same manner as the usual processing of silver halide photographic light-sensitive materials.

[0043]

EXAMPLES Examples of the present invention will be described below.
The present invention is not limited to these.

Dimethyl terephthalate: 5-sodium sulfoisophthalic acid: ethylene glycol: polyethylene glycol (molecular weight about 3500) = 97: 3: 99.5: 0.5
A film obtained from polyester polymerized so as to be a finished polymer at a ratio of (molar ratio) is used as the polyester film support of the present invention.

Polyethylene terephthalate (PE
The film of T) is used as a PET support for comparison.

Next, 40 mol% of dimethyl terephthalate and 33 mol% of dimethyl isophthalate as dicarboxylic acid components,
7 mol% sodium salt of dimethyl 5-sulfoisophthalate, 20 mol% adipic acid, 65 mol% ethylene glycol as a glycol component, 35 mol% diethylene glycol
Was copolymerized.

The copolymer thus obtained was analyzed and found to have an intrinsic viscosity of 0.55 dl / g and a glass transition temperature of about 26 ° C.

Similarly, the composition of the polyester copolymer was changed as shown in Table 1 to obtain a copolymer.

Each of these polyester copolymers
After stirring in hot water at 95 ° C for 3 hours to prepare a 15 wt% aqueous solution,
A slightly cloudy 8 wt% aqueous solution obtained by diluting with water was used as an undercoating coating solution, and the undercoating coating solution was used to coat both sides of the longitudinally stretched polyester film support and PET support of the present invention. And biaxially stretched 75 μm thick polyester film and PET with an undercoat layer of 0.3 g / m ² by dry weight
I got a film.

Further, the following backing layer was formed on one surface of the undercoat layer. The following display shows the amount per m ² . Backing layer gelatin 8.0 g Merck saponin 2.0 mg Silica particles with an average particle size of 3 μm 20 mg Colloidal silica 60 mg Compound a 10 mg Compound b 15 mg Compound c 20 mg

[0051]

[Chemical 1]

For comparison, both sides of the biaxially stretched polyester film support (thickness: 75 μ) and PET film support of the present invention were subjected to corona discharge treatment (0.02 KVA · min / m ^2).
After that, a subbing layer having the following composition was provided, and a backing layer was further provided in the same manner as above. Comparative subbing layer coating solution (A-1) Gelatin 3 g Distilled water 250 cc Sodium α-sulfodi-2-ethylhexyl succinate 0.05 g Formaldehyde 0.02 g

(Coating of Photographic Layer) On the surface of the subbing layer on the side opposite to the backing layer of the polyester film and PET film support of the present invention provided with the above backing layer, each layer having the composition shown below is sequentially formed. Multilayer color photographic light-sensitive material samples No. 1 to 6 (see Table 1) were prepared by forming from the support side.

Hereinafter, the addition amount in the silver halide photographic light-sensitive material is the number of grams per 1 m ² unless otherwise specified. Also, silver halide and colloidal silver are shown in terms of silver.

First layer; antihalation layer (HC-1) Black colloidal silver 0.20 Ultraviolet absorber (UV-1) 0.20 High boiling point solvent (Oil-1) 0.20 Gelatin 1.3 Second layer; Intermediate layer (IL-1) Ultraviolet absorber (UV-1) 0.01 High boiling point solvent (Oil-1) 0.01 Gelatin 1.3 Third layer; low-sensitivity red light-sensitive emulsion layer (RL) Silver iodobromide emulsion (Em-1) 0.9 Silver iodobromide emulsion (Em-2) 0.6 Sensitizing dye (S-1) 2.5 × 10 ⁻⁴ (mol / silver 1 mol) Sensitizing dye (S-2) 2.5 × 10 ⁻⁴ (mol / silver 1 mol) Sensitizing dye ( S-3) 0.5 × 10 ^-4 (mol / silver 1 mol) Cyan coupler (Co-1) 1.0 Colored cyan coupler (CC-1) 0.05 DIR compound (D-1) 0.002 High boiling point solvent (Oil-1) 0.5 Gelatin 1.4 Fourth layer: High-sensitivity red light-sensitive emulsion layer (RH) Silver iodobromide emulsion (Em-3) 2.0 Sensitizing dye (S-1) 2.0 × 10 ⁻⁴ (mol / silver 1 mol) Sensitizing dye (S-2) 2.0 × 10 ⁻⁴ (mol / silver 1 mol) Sensitizing dye (S-3) 0.1 × 10 ⁻⁴ (mol / silver 1 mol) Cyan coupler (Co-1) 0.25 Colored cyan coupler (CC-1) 0.015 DIR compound (D-2) 0.05 High boiling point solvent (Oil-1) 0.3 Gelatin 1.4 Fifth layer; Intermediate layer (IL-2) Gelatin 0.5 6 layers; low-sensitivity green light-sensitive emulsion layer (GL) Silver iodobromide emulsion (Em-1) 1.0 Sensitizing dye (S-4) 5 × 10 ⁻⁴ (mol / silver 1 mol) Sensitizing dye (S- 5) 1 × 10 ⁻⁴ (mol / silver 1 mol) Magenta coupler (Mo-1) 0.5 Colored magenta coupler (CM-1) 0.01 DIR compound (D-3) 0.02 DIR compound (D-4) 0.02 High boiling point solvent (Oil-2) 0.4 Gelatin 1.0 7th layer; Intermediate layer (IL-3) Gelatin 0.7 8th layer; High-sensitivity green photosensitive emulsion layer (GH) Silver bromide emulsion (Em-3) 1.3 Sensitizing dye (S-6) 1.5 × 10 -4 ( mol / mole of silver) Sensitizing dye (S-7) 2.5 × 10 -4 ( mol / mole of silver) Sensitizing dye (S-8) 0.5 × 10 ^-4 (mol / silver 1 mol) Magenta coupler (Mo-2) 0.05 Magenta coupler (Mo-3) 0.15 Colored magenta coupler (CM-2) 0.05 DIR compound (D- 3) 0.01 high boiling solvent (Oil-3) 0.5 gelatin 1.0 9th layer; yellow filter layer (YC) yellow colloidal silver 0.1 color stain inhibitor (SC-1) 0.1 high boiling solvent (Oil-3) 0.1 gelatin 0.8 10 layers; low-sensitivity blue light-sensitive emulsion layer (BL) silver iodobromide emulsion (Em-1) 0.25 silver iodobromide emulsion (Em-2) 0.25 sensitizing dye (S-10) 7 × 10 ^-4 (mol / Silver 1 mol) Yellow coupler (Yo-1) 0.5 Yellow coupler (Yo-2) 0.1 DIR compound (D-2) 0.01 High boiling point solvent (Oil-3) 0.3 Gelatin 0.9 11th layer; High-sensitivity blue-sensitive emulsion layer (BH) Silver iodobromide emulsion (Em-4) 0.4 Silver iodobromide emulsion (Em-1) 0.3 Sensitizing dye (S-9) 1 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (S-10) 3 × 10 ^-4 (mol / silver 1 mol) Yellow coupler (Yo-1) 0.30 Yellow coupler (Yo- 2) 0.05 High boiling point solvent (Oil-3) 0.1 Gelatin 1.0 12th layer; 1st protective layer (PRO-1) Fine grain silver iodobromide emulsion (average particle size 0.08 μAgI 2 mol%) 0.4 UV absorber (UV- 1) 0.10 UV absorber (UV-2) 0.05 High boiling point solvent (Oil-1) 0.1 High boiling point solvent (Oil-4) 0.1 Formalin scavenger (HS-1) 0.3 Formalin scavenger (HS-2) 0.2 Gelatin 1.0 13th Layer; Second protective layer (PRO-2) Surfactant (Su-1) 0.005 Polymethylmethac Rate matting agent (average particle size 3 μm) 0.13 gelatin 0.6 In addition to the above composition, each layer contains a coating aid Su-1, a dispersion aid Su-2, a hardener H-1, H-2, H-3, stabilizer Stab-1, and antifoggant AF-1 were added.

Em-1 Average grain size 0.43 μm Silver iodobromide content 9.0 mol% (uniform) Monodisperse silver iodobromide emulsion Em-2 Average grain size 0.32 μm Silver iodobromide content 2.0 mol% ( (Uniform) Monodisperse silver iodobromide emulsion Em-3 Average grain size 0.78 μm Silver iodobromide content 6.0 mol% (uniform) Monodisperse silver iodobromide emulsion Em-4 Average grain size 1.1 μm Iodine Silver halide content 9.0 mol% (uniform) Monodisperse silver iodobromide emulsion

[0057]

[Chemical 2]

[0058]

[Chemical 3]

[0059]

[Chemical 4]

[0060]

[Chemical 5]

[0061]

[Chemical 6]

[0062]

[Chemical 7]

[0063]

[Chemical 8]

[0064]

[Chemical 9]

[0065]

[Chemical 10]

The obtained samples No. 1 to 6 were cut into a size of 35 mm and loaded in a patrone.

After leaving it at 40 ° C. for 10 days, it was photographed with an ordinary camera and subjected to the following developing treatment. Processing process (38 ℃) Color development 3 minutes 15 seconds Bleaching 6 minutes 30 seconds Water washing 3 minutes 15 seconds Fixing 6 minutes 30 seconds Water washing 3 minutes 15 seconds Stabilization 1 minute 30 seconds Drying Used in each processing step The composition of the treated liquid is as follows.

[Color developer] 4-amino-3-methyl-N-ethyl-N- (β-hydroxyethyl) -aniline / sulfate 4.75 g anhydrous sodium sulfite 4.25 g hydroxylamine / 1/2 sulfate 2.0 g Anhydrous potassium carbonate 37.5 g Sodium bromide 1.3 g Nitrilotriacetic acid trisodium salt (monohydrate) 2.5 g Potassium hydroxide 1.0 g Add water to make 1 liter.

[Bleach] Ethylenediaminetetraacetic acid iron ammonium salt 100.0 g Ethylenediaminetetraacetic acid diammonium salt 10.0 g Ammonium bromide 150.0 g Glacial acetic acid 10.0 ml Water was added to make 1 liter, and pH was adjusted to 6.0 using ammonia water. To do.

[Fixer] Ammonium thiosulfate 175.0 g Anhydrous sodium sulfite 8.5 g Sodium metasulfite 2.3 g Water is added to make 1 liter, and pH is adjusted to 6.0 using acetic acid.

[Stabilizer] Formalin (37% aqueous solution) 1.5 ml Conidax (manufactured by Konica) 7.5 ml Water is added to make 1 liter.

After passing the developed color negative film through an ordinary printer, the degree of scratches generated in the printer section was evaluated according to the following criteria. (A) No scratches were generated (B) Scratches were slightly generated (C) Scratches were considerably generated. The results are shown in Table 2.

Further, the color negative film thus obtained was provided with a film in a dry state before development (hereinafter referred to as a raw film), with a wet film under development, and with a film in a dry state after development (hereinafter referred to as dry). The results shown in Table 2 were obtained when the film-attached) was evaluated by the following method.

Evaluation method with film (with raw film and dry film) A razor blade was used on the surface of the photographic layer of the sample before development or after drying after development.
At the angle of 45 °, scratches reaching the support are formed in a grid pattern, and an adhesive tape (cellophane adhesive tape) is pressure-bonded onto the scratch, and then the tape is rapidly peeled off at an angle of about 45 °. At this time, the area of the photographic layer which is peeled off together with the tape is compared with the area where the tape is stuck, and evaluated in the following 5 grades.

[0075] If the evaluation is 4 or more, it can be considered that the film is sufficiently strong in practical use.

(With wet film) During various development processes, scratches reaching the support were formed in a lattice pattern on the surface of the photographic layer of the sample with a sharp needle, and then the surface of the layer was strongly strengthened in a wet state. Rub for 10 seconds. The area of the photographic layer that is peeled off at this time is compared with the lattice area, and is evaluated in five levels. The evaluation criteria are the same as those with the raw and dry film.

[0077]

[Table 1]

[0078]

[Table 2] As is clear from Table 2, when the polyester film support of the present invention is used, curling in the printer portion does not cause abrasion due to curling in the developing process. Further, in the case of the conventional subbing A-1,
As a roll film, sufficient film-forming properties cannot be obtained under severe processing conditions, but when an undercoating layer containing the polyester copolymer of the present invention is used, all of the film-forming properties, particularly wet film-forming, are excellent. This property is obtained when the polyester film support of the present invention is used.

Claims (1)

[Claims] 1. A photographic light-sensitive material comprising a polyester film support having an undercoat layer containing a polyester copolymer on at least one surface thereof, and further having at least one silver halide emulsion layer on the undercoat layer. A photographic light-sensitive material, wherein the water content of the polyester film is 0.5% by weight or more.