JP2504871B2 - Silver halide photographic material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silver halide photographic light-sensitive material, and more particularly to a light-sensitive material for an ultra-bright light room mainly used in the printing and plate-making industry.

[0002]

2. Description of the Related Art In recent years, in the field of printing, due to the complexity of printed materials and the development of scanners, there has been a demand for improving the efficiency of the returning work process. Therefore, a photographic film with a low sensitivity of about 10 ^-4 to 10 ^-5 has been developed compared to the conventionally used return film, and the return film can be handled in a bright room (under a white fluorescent lamp excluding ultraviolet rays). It is practically used as a film, that is, a light-sensitive material for a bright room. The performance required for such a light-sensitive material for a bright room is that it can be handled for a long time in a light room and has high sensitivity to a printer light source. It has a sufficient maximum density with moderate or higher hardness.

[0003] It is known in the art to use hydrazine compounds to provide a high contrast and a sufficient maximum concentration. The addition of a hydrazine compound to a silver halide photographic emulsion or a developing solution is disclosed in U.S. Pat. Nos. 3,730,727 (a developing solution combining ascorbic acid and hydrazine) and 3,227,552. (Hydrazine is used as an auxiliary developing agent for directly obtaining a positive color image) and JP-A-3,386,831 (containing β-monophenylhydrazide of an aliphatic carboxylic acid as a stabilizer for a silver halide light-sensitive material) 2, 419, 975, and "The Theory of Photographic process" by Mees, 3rd edition (1966), p. 281.

[0004] Among them, in particular, US Patent No. 2,41
No. 9,975 discloses that a high contrast negative image is obtained by adding a hydrazine compound. That is, when a hydrazine compound is added to a silver chlorobromide emulsion and developed with a developer having a high pH such as 12.8, extremely hard photographic characteristics having a gamma (γ) exceeding 10 can be obtained.
Has been described. However, a strong alkaline developer having a pH close to 13 is easily oxidized by air, is unstable, and cannot withstand long-term storage or use.

On the other hand, US Pat.
77, 4,224,401, 4,243,73
No. 9, No. 4,269, 929, No. 4,272, 614
No. 4,323,643 and the like disclose a silver halide photographic light-sensitive material which gives a very hard negative negative photographic property by using a stable developing solution, and the acylhydrazine compound used for them is It is known that nitrogen gas is generated during the development process, and this gas collects in the film to form bubbles, which may impair the photographic image.

Therefore, for the purpose of reducing the production of air bubbles and simultaneously reducing the cost for producing a light-sensitive material, hydrazine which is hard in tone and has a sufficient maximum density even with a small amount of addition and which is less likely to cause uneven development and sand fog Silver halide photographic light-sensitive materials containing compounds are disclosed in JP-A-62-178246 and 62-62.
-180361, 62-275247, 63-63
253357.

However, the present inventors have found that when a light-sensitive material for a bright room, which is required to be handled in a bright room, contains a large amount of a water-soluble rhodium salt for the purpose of extremely reducing the sensitivity,
It was confirmed that when the hydrazine compound of the above-mentioned type is used, inversion due to solarization occurs in a region having a large exposure amount. This phenomenon is a fatal problem in a light-sensitive material for a bright room in which an operation for increasing the exposure amount (thickening operation) is frequently performed for the purpose of thickening characters and halftone dots. There has been a demand for measures without degrading the conventional advantages.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a silver halide photographic light-sensitive material which is hard and has a sufficient maximum density and which can be handled in a bright room.

Secondly, the object of the present invention is a negative-type halogen which can be handled in a bright room and has a good thickening property, which is free from inversion due to solarization in a high exposure amount region and whose maximum density is not lowered by a thickening operation. A silver halide photographic light-sensitive material is provided.

A third object of the present invention is to provide a negative-working silver halide photographic light-sensitive material which can be processed in a stable developing solution and does not cause unevenness in development or fogging of sand and which can be handled in a bright room. It is.

[0011]

The objects of the present invention are to provide at least 90 mol% of silver chloride on a support and 5 × 10 ^-7 to 2 × 10 ^-4 mol of a water solution per mol of silver halide. Having at least one photosensitive layer having silver halide grains containing a photosensitive rhodium salt, and having a compound represented by the following chemical formula 3 in the photosensitive layer or another hydrophilic colloid layer, and the following chemical formula 4 It was achieved with a silver halide photographic light-sensitive material characterized by containing a compound represented.

[0012]

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[In the chemical formula 3, Ar represents an aryl group,
R is a group represented by -OR ₁ or -N, (R ₂₎ (R
Represents a group represented by ₃ ). R ₁ represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted unsaturated heterocyclic group, or a substituted or unsubstituted aryl group. R ₂ , R ₃
Each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted unsaturated heterocyclic group, or a substituted or unsubstituted pyridinium group. Also, R ₂ and R ₃ are
They may be linked to each other to form a ring. ]

[0014]

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[In Chemical Formula 4, X represents a substituent having a Hammett's σ p value of +0.15 to +0.70. ]

In the chemical formula 3, the aryl group represented by Ar is specifically a phenyl group which may have a substituent, or a naphthyl group, and examples of the substituent include an alkyl group, Aryl group, hydroxyl group, halogen atom, alkoxy group, aryloxy group, alkenyl group, amino group, acylamino group, sulfonamide group, alkylideneamino group, ureido group, thiourea group, thioamide group, heterocyclic group, or a combination thereof. Etc.

Further, Ar may have a ballast group incorporated therein which is practically used in a non-moving photographic additive such as a color coupler. The ballast group is a group having eight or more carbon atoms and relatively inactive to photographic properties, and can be selected from, for example, an alkyl group, an alkoxy group, a phenyl group, a phenoxy group and the like.

In Chemical formula 3, R represents a group represented by —OR ₁ or a group represented by Chemical formula 5.

[0019]

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R ₁ represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted unsaturated heterocyclic group, or a substituted or unsubstituted aryl group.

R ₂ and R ₃ are each independently a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted unsaturated heterocyclic group,
Alternatively, it represents a pyridinium group represented by Chemical formula 6. Further, R ₂ and R ₃ may be linked to each other to form a ring.

[0022]

[Chemical 6]

R ₄ represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted alkenyl group. R ₅ represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted alkoxy group. X ^- represents an anion.

Specific examples of the compound represented by Chemical formula 3 are shown below. However, the present invention is not limited to the following compounds.

[0025]

[Chemical 7]

[0026]

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[0027]

[Chemical 9]

[0028]

[Chemical 10]

[0029]

[Chemical 11]

[0030]

[Chemical 12]

[0031]

[Chemical 13]

[0032]

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[0033]

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[0034]

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[0035]

[Chemical 17]

[0036]

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[0037]

[Chemical 19]

[0038]

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[0039]

[Chemical 21]

[0040]

[Chemical formula 22]

[0041]

[Chemical formula 23]

[0042]

[Chemical formula 24]

[0043]

[Chemical 25]

[0044]

[Chemical formula 26]

[0045]

[Chemical 27]

[0046]

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[0047]

[Chemical 29]

[0048]

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[0049]

[Chemical 31]

[0050]

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[0051]

[Chemical 33]

[0052]

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[0053]

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[0054]

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[0055]

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[0056]

[Chemical 38]

[0057]

[Chemical Formula 39]

[0058]

[Chemical 40]

[0059]

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[0060]

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[0061]

[Chemical 43]

[0062]

[Chemical 44]

[0063]

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[0064]

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[0065]

[Chemical 47]

[0066]

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[0067]

[Chemical 49]

[0068]

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[0069]

[Chemical 51]

[0070]

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[0071]

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[0072]

[Chemical 54]

[0073]

[Chemical 55]

[0074]

[Chemical 56]

[Chemical Formula 57]

[0076]

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[0077]

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[0078]

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[0079]

[Chemical formula 61]

[0080]

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[0081]

[Chemical formula 63]

[0082]

[Chemical 64]

[0083]

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[0084]

[Chemical formula 66]

[0085]

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[0086]

[Chemical 68]

[0087]

[Chemical 69]

[0088]

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[0089]

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[0090]

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[0091]

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[0092]

[Chemical 74]

[0093]

[Chemical 75]

[0094]

[Chemical 76]

[0095]

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[0096]

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[0097]

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[0098]

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[0099]

[Chemical 81]

[0100]

[Image Omitted]

[Chemical 83]

[0102]

[Chemical 84]

[0103]

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[0104]

[Chemical 86]

[0105]

[Chemical 87]

[0106]

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The compound represented by Chemical formula 3 in the light-sensitive material of the present invention is preferably contained in the silver halide emulsion layer, but may be contained in other hydrophilic colloid layers. Since the content of the compound of formula 3 of the present invention in the layer depends on the characteristics of the silver halide emulsion used, the chemical structure of the compound and the developing conditions, the appropriate content can be varied over a wide range. A range of about 1 × 10 ⁻⁶ to 1 × 10 ⁻² mol per mol of silver in the silver halide emulsion is practically useful, and more preferably 1 × 10 ^{−5 to} 3 × 10 ⁻³ mol. Is good.

In the present invention, the benzotriazole compound represented by Chemical formula 4 has a Hammett σ p value of +
It has a substituent of 0.15 to +0.70. The Hammett's σ p value is one parameter that can be used as a measure of the electron donating property or electron withdrawing property of a substituent, and is an "Advanced Organic Chemistry.
dEdition.Part 2 "(1990, Plenum.New
York), page 201, and the like.

Substituents applicable to the present invention include chlorine atom (σp = 0.24), bromine atom (σp = 0.26),
Fluorine atom (σp = 0.15), acetyl group (σp =
0.47), carboxyl group (σp = 0.44), methoxycarbonyl group (σp = 0.44), cyano group (σp
= 0.70) and the like, and a hydrogen atom (σp = 0), a methyl group (σp = −0.14), a nitro group (σp = 0.8).
The benzotriazole compound having a substituent such as 1) is
Not applicable.

Specific examples of the compound represented by Chemical formula 4 are shown below. However, the present invention is not limited to the following compounds.

[0111]

[Chemical 89]

[0112]

[Chemical 90]

[0113]

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[0114]

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[0115]

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[0116]

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[0117]

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The compound represented by Chemical formula 4 in the light-sensitive material of the present invention is preferably contained in the silver halide emulsion layer, but may be contained in other hydrophilic colloid layers. Since the content of the compound of formula 4 of the present invention in the layer depends on the characteristics of the silver halide emulsion used, the chemical structure of the compound and the developing conditions, the appropriate content can vary over a wide range. A range of about 5 × 10 ^{−6 to} 5 × 10 ⁻² moles is practically useful per mole of silver in the silver halide emulsion, more preferably 1 × 10 ^{−4 to} 3 × 10 ⁻² moles. Is good.

A silver halide photographic light-sensitive material containing a hydrazine compound containing a benzotriazole compound is disclosed in JP-A-53-66732 and 61-6157.
No. 52, the benzotriazole compound acts as an organic anti-fogging agent, and this is also clear from the results of reduction of fog in Examples. Moreover, similar effects are obtained with most benzotriazole compounds.

On the other hand, the benzotriazole compound represented by Chemical formula 4 in the present invention is observed when the hydrazine compound represented by Chemical formula 3 is contained in a silver halide light-sensitive material containing a large amount of a water-soluble rhodium salt. It shows a function of preventing inversion due to solarization in a high exposure amount region, and further, this function is not common to almost all benzotriazole compounds as seen in existing patents, and the range of Chemical formula 4 is shown. (A benzotriazole compound having a substituent such as a hydrogen atom or a nitro group whose Hammett's σ p value does not fall within the scope of the present invention is an antifoggant.
It is used by those skilled in the art as having the same action as the benzotriazole compound of the present invention. ) Has no such effect. That is, the action of the benzotriazole compound represented by Chemical formula 4 in the present invention is a novel effect which is not expected from the conventional art.

The silver halide used in the photosensitive silver halide emulsion layer of the light-sensitive material of the present invention is silver chloride or silver chlorobromide, silver chlorobromoiodide, or silver chlorobromide containing at least 90 mol% of silver chloride.
Silver chloroiodide can be used. Preferably, silver chloride or silver chlorobromide of 5 mol% or less of silver bromide or
Silver chloroiodide of 1 mol% or less of silver iodide is preferred. The form, crystal habit, size distribution, etc. of the silver halide grains are not particularly limited,
It is preferable that the average particle diameter is 0.1 to 0.4 μm and 90% or more of all particles have a particle diameter in a range of ± 10% of the average particle diameter. The method for preparing the silver halide emulsion may be any of known methods such as forward mixing, reverse mixing, and simultaneous mixing.

As the water-soluble rhodium salt used in the light-sensitive silver halide emulsion layer of the light-sensitive material of the present invention, conventionally known ones can be used, but typically, rhodium monochloride, rhodium dichloride and rhodium trioxide are used. Chlorides, rhodium ammonium chloride and the like are used.
In general, the water-soluble rhodium salt is preferably used at the time of silver halide precipitation or physical ripening, but may be at any time thereafter. The water-soluble rhodium salt is effective in the range of 5 × 10 ⁻⁷ to 2 × 10 ⁻⁴ mol per mol of silver halide, preferably 1 mol per mol of silver halide.
The range of × 10 ^-6 to 1 × 10 ^-4 mol is preferable.

In addition to the rhodium salt, an iron compound such as a salt of a noble metal such as an iridium salt or a red blood salt may be allowed to be present during the physical ripening or nucleation of silver halide grains.

The emulsion that had been physically ripened was desalted and then
It is preferable that the necessary additives are added before coating, but the desalting treatment can be omitted.

The photosensitive material of the present invention may be provided with an overcoat layer, an intermediate layer, a backcoat layer, an undercoat layer and other hydrophilic colloid layers in addition to the photosensitive emulsion layer. A matting agent may be contained in these layers.

As the binder or protective colloid that can be used in the emulsion layer, overcoat layer, intermediate layer, backcoat layer and the like of the light-sensitive material of the present invention, it is advantageous to use gelatin, but other hydrophilic substances are used. A sex colloid can also be used. For example, gelatin derivatives, graft polymers of gelatin and other polymers, proteins such as albumin and casein; cellulose derivatives such as hydroxyethyl cellulose, carboxymethyl cellulose, and cellulose sulfates; sugar derivatives such as sodium alginate and starch derivatives; polyvinyl alcohol. It is possible to use various kinds of synthetic hydrophilic polymer substances such as a partial or acetal of polyvinyl alcohol, poly-N-vinylpyrrolidone, polyacrylic acid, polymethacrylic acid, polyacrylamide, polyvinyl imidazole, and other single or copolymers. . As gelatin, lime-processed gelatin, acid-processed gelatin, Bull. Soc. Sci. Phot. Japan, No. 16, P30 (19)
Enzyme-treated gelatin as described in 66) may be used, and a hydrolyzate or enzymatic degradation product of gelatin can also be used.

The photographic emulsion used in the present invention may contain various compounds for the purpose of preventing fog during the production process of the light-sensitive material, storage or photographic processing, or stabilizing photographic performance. . The photographic light-sensitive material of the present invention may contain an inorganic or organic hardener in the photographic emulsion layer or other hydrophilic colloid layer. For example, chromium salts (such as chrome alum), aldehydes (such as formaldehyde and glyoxal), N-methylol compounds,
Dioxane derivatives (e.g., 2,3-dihydroxydioxane), active vinyl compounds, active halogen compounds (2,4
-Dichloro-6-hydroxy-S-triazine, etc.),
Etc. can be used alone or in combination.

The photographic emulsion used in the present invention includes an emulsion layer, an overcoat layer, a backing layer, etc. for the purpose of enhancing the image quality due to irradiation, halation and the like, the character removal performance and other properties required in the printing and plate making industry. Other hydrophilic colloid layers of can include filter dyes known to those skilled in the art.

Further, in a photographic emulsion layer or other hydrophilic colloid layer of a light-sensitive material produced by using the present invention, a coating aid, an antistatic agent, an improvement of slipperiness, an emulsion dispersion, an adhesion prevention and an improvement of photographic characteristics (eg, , Development acceleration, contrast enhancement, and sensitization) may be included for various purposes. Nonionics such as saponins (steroids), alkylene oxide derivatives (polyethylene glycol, polyethylene glycol alkyl ethers, etc.), glycidol derivatives (alkenyl succinic acid polyglyceride, etc.), fatty acid esters of polyhydric alcohols, alkyl esters of sugars, etc. Anionic surface active agent containing an acidic group such as a carboxyl group, a sulfo group, a phospho group, a sulfuric acid ester group, a phosphoric acid ester group, such as an alkylcarboxylic acid salt, an alkyl sulfuric acid ester, an alkyl phosphoric acid ester, etc. Agents: amphoteric surfactants such as amino acids, aminoalkyl sulfonic acids, aminoalkyl sulfuric acid or phosphoric acid esters; aliphatic or aromatic quaternary ammonium salts, heterocyclic quaternary ammonium salts such as pyridinium and imidazolium What cationic surfactant can be used.

The photographic light-sensitive material used in the present invention may contain a water-insoluble or sparingly soluble synthetic polymer decomposition product in the photographic emulsion layer and other hydrophilic colloid layers for the purpose of improving dimensional stability. For example, alkyl (meth) acrylate, alkoxyalkyl (meth) acrylate, glycidyl (meth) acrylate, (meth) acrylamide,
Vinyl acetate, acrylonitrile, olefin, styrene, etc., alone or in combination, or with these, acrylic acid,
A polymer having a monomer component of a combination of methacrylic acid, α, β-unsaturated dicarboxylic acid, hydroxyalkyl (meth) acrylate, styrene sulfonic acid and the like can be used.

For the photographic light-sensitive material used in the present invention, any support known in the art can be used. Examples of the support include glass, cellulose acetate film, polyethylene terephthalate film, paper, baryta coated paper, polyolefin (for example, polyethylene and polypropylene) laminated paper, polystyrene film, polycarbonate film, and metal plate such as aluminum. These supports may be subjected to corona treatment by a known method, and if necessary, may be subjected to undercoating treatment by a known method.

In order to obtain ultrahigh contrast photographic characteristics using the silver halide light-sensitive material of the present invention, a conventional lith developer or pH 13 described in US Pat. No. 2,419,975 is used.
It is not necessary to use a highly alkaline developing solution close to the above, and a stable developing solution can be used. That is, for the silver halide photographic light-sensitive material of the present invention, a developer containing a sufficient amount of sulfite ion as a preservative (especially 0.15 mol / l or more) can be used, and a pH of 9.5 or more, Especially 10.5-1
With the developer of 2.3, a negative image having a sufficiently high contrast can be obtained. There is no particular limitation on the developing agent, and dihydroxybenzenes, 3-pyrazolidones, aminophenols and the like can be used alone or in combination. In addition to the above, the developer contains a pH buffer such as alkali metal sulfite, carbonate, borate, and phosphate, bromide, iodide, and organic antifoggant (particularly preferably,
(Nitroindazoles or benzotriazoles), or a development inhibitor or an antifoggant. If necessary, a water softener, a dissolution aid, a color tone, a development accelerator, a surfactant, an antifoaming agent, a hardening agent, an antifouling agent for silver (eg, 2-mercaptobenzimidazoles) of a film, etc. May be included. Specific examples of these additives are described in Research Disclosure No. 176-1.
7643 and the like.

In the present invention, a system may be adopted in which a developing agent is incorporated in a light-sensitive material and processing is carried out with an alkaline activator solution. (JP-A-57-129436, 57-129433, 57-129434, 5)
7-129435, U.S. Pat. No. 4,323,643, etc.). The treatment temperature is usually selected between 18 ° C and 50 ° C, but may be lower than 18 ° C or higher than 50 ° C. It is preferable to use an automatic processor for photographic processing. In the present invention, the total processing time from when the photosensitive material is put into the automatic developing machine to when it comes out is from 60 seconds to 120 seconds.
Even if it is set to seconds, a photographic characteristic of a negative tone of a super-high contrast can be sufficiently obtained.

[0134]

Example 1 A gelatin silver chloride emulsion containing 8.0 × 10 ⁻⁶ mol / mol Ag of rhodium dichloride, which is composed of cubic crystals having an average particle size of 0.13 μm, was prepared by the double jet method and subjected to flow. The emulsion desalted, washed with water and redissolved by the curation method was divided, and 5 × 10 ⁻⁴ mol / mol Ag of the hydrazine compounds of the present invention and comparative examples shown in Table 1 were added to the emulsion of the present invention. Benzotriazole compound of 5 × 10 ⁻³ mol / mol Ag, polyethyl acrylate latex, 2-hydroxy-4,6-dichloro-1,
After adding 3,5-triazine sodium salt and sodium dodecylbenzenesulfonate, silver nitrate was coated on the polyethylene terephthalate film at 5 g / m @ 2 and gelatin at 3 g / m @ 2. On top of this, as a protective layer, 1 g / m2 of gelatin and 80 mg / m2 of a yellow dye having an absorption maximum wavelength in 400 to 450 nm (eg, Oxonol Yellow manufactured by Hoechst Co.), a surfactant and a hardener are applied and coated. Eight samples shown in 1 were prepared. The hydrazine compounds of the comparative examples tested are shown below.

[0135]

[Chemical 96]

[0136]

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These films were exposed with a bright room printer (P-627FM manufactured by Dainippon Screen Mfg. Co., Ltd.) through a sensitometric wedge, and then developed with a developer having the following composition at 38 ° C. for 20 seconds. Fixing, washing with water,
Dried. An automatic processor (Dainippon Screen Mfg. Co., Ltd., LD-221QT) was used for this treatment. The sensitivity was relatively expressed as a sensitivity having a transmission density of 2.5 with a sample containing no hydrazine compound being 100. Further, gamma is tan θ of a linear portion having an optical density of 1.0 to 2.5.
It was expressed by. Further, as a test for sand fog, each sample was forcibly developed with the same developing solution for 1 minute at 38 ° C., and its generation was examined. Samples that occurred even a little were evaluated as ×, and samples that did not occur at all were evaluated as ◯. The results are shown in Table 1.

<Developer> Hydroquinone 50.0 g N-methyl-p-aminophenol 1 / 2H ₂ SO ₄ 0.3 g Sodium hydroxide 18.0 g 5-Sulfosalicylic acid 55.0 g Potassium sulfite 110.0 g EDTA.2Na 1.0 g Potassium bromide 10.0 g 5-Methylbenzotriazole 0.4 g 2-Mercaptobenzene imidazole-5-sulfonic acid 0.2 g 3- (5-Mercaptotetrazole) benzene sodium sulfonate 0.2 g Sodium toluenesulfonate 8.0 g Water was added and the pH was adjusted to 11.8 with 1 l potassium hydroxide.

[0139]

[Table 1]

From the results shown in Table 1, it can be seen that the photographic light-sensitive material of the present invention can obtain a highly sensitive and hard-tone image as compared with the photographic light-sensitive material of Comparative Example, and also has a low Dmin and no occurrence of sand fog. .

Example 2 Example 1 except that the hydrazine compound of the present invention shown in Table 2 and the benzotriazole compound of the present invention and the comparative example were used.
Twelve kinds of samples were prepared in the same manner as in. Then, the sample was exposed and processed in the same manner as in Example 1 to obtain sensitivity,
And gamma were calculated. Also, in order to test the reversal due to solarization at the time of thickening, 50% halftone dot original is 50%.
Dmax at the exposure amount returning to% (Dmax at standard exposure)
And Dmax at an exposure amount three times that (Dm when thickening
ax) was determined. The benzotriazole compounds of the comparative examples tested are shown below.

[0142]

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[0143]

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[0144]

[Table 2]

The results are shown in Table 2.

[0146]

[Table 2]

From the results shown in Table 2, the photographic light-sensitive material of the present invention can obtain a high-sensitivity and high-contrast image as compared with the photographic light-sensitive material of Comparative Example, and further, inversion due to solarization during thickening is not observed. Recognize.

Example 3 Using the hydrazine compound of Chemical formula 24 of the present invention and the benzotriazole compound of Chemical formula 89 of the present invention, except that the amount of rhodium dichloride and the composition of silver halide were changed as shown in Table 3, Nine samples were prepared in the same manner as in Example 2. Then, the sample was exposed and processed in the same manner as in Example 1 to determine the sensitivity. On the other hand, the bright room light that removed 300 lux of ultraviolet light before exposure, namely Toshiba FL4
After standing for 1 hour under a fluorescent lamp of 0SWNU, exposure and processing were carried out in the same manner as in Example 1 to obtain sensitivity and Dmin, and the difference (change due to safelight) was examined. The results are shown in Table 3.
Shown in

[0149]

[Table 3] * The sensitivity is too low and the image is not good.

From the results of Table 3, the photographic light-sensitive material of the present invention has sensitivity as a bright room light-sensitive material, sensitivity by safelight irradiation, and Dm as compared with the photographic light-sensitive material of Comparative Example.
It can be seen that there is little change in in, that is, the handleability in a bright room is excellent.

[0151]

Industrial Applicability According to the present invention, it has a high contrast and a sufficient maximum density, has no reversal due to solarization in a high exposure amount region, does not decrease the maximum density in a thickening operation, and has a good thickening performance, and A negative type silver halide photographic light-sensitive material that can be processed in a stable developing solution and does not cause uneven development or sand fog and can be handled in a bright room can be obtained.

[Chemical 57]

[Chemical formula 82]

Claims (1)

(57) [Claims] 1. At least 90 mol% of silver chloride on a support, and 5 × 10 ⁻⁷ to 2 × per mol of silver halide.
A compound having at least one photosensitive layer having silver halide grains containing 10 ⁻⁴ mol of a water-soluble rhodium salt, and a compound represented by the following chemical formula 1 in the photosensitive layer or another hydrophilic colloid layer, And a silver halide photographic light-sensitive material containing a compound represented by the following chemical formula 2. Embedded image [Wherein, Ar represents an aryl group, and R represents -OR
Represents a group represented by the group represented by ₁ or _{-N, (R 2) (R} 3). R ₁ represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted unsaturated heterocyclic group, or a substituted or unsubstituted aryl group. R ₂ and R ₃ are each independently a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group,
It represents a substituted or unsubstituted unsaturated heterocyclic group, or a substituted or unsubstituted pyridinium group. Also, R ₂
And R ₃ may combine with each other to form a ring. ] [Chemical 2] [In Chemical Formula 2, X has a Hammett's σp value selected from a halogen atom, an acyl group, a carboxyl group, an alkoxycarbonyl group, and a cyano group of +0.15 to +0.70.
Represents a substituent. ]