JPH0736165A - Drying method for silver halide photographic sensitive material and silver halide photographic sensitive material for drying treatment with ir ray - Google Patents

Abstract

PURPOSE:To prevent irregular drying and decrease in picture qualities even when a photosensitive material is dried in a short time by forming at least one silver halide emulsion layer containing colloidal silica on the one surface of a supporting body. CONSTITUTION:A silver halide photographic sensitive material is dried by using IR rays in at least a part of drying process. In this method, the photographic sensitive material used has at least one silver halide emulsion layer containing colloidal silica formed on at least one surface of a supporting body. The colloidal silica essentially consists of silicon dioxide and may contain a small amt. of other components such as alumina and sodium, aluminate. Further, the colloidal silica may contain an inorg. base as a stabilizer. It is preferable to add the colloidal silica to the silver halide emulsion after physical or chemical aging to prepare the silver halide emulsion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drying method using infrared rays for drying a silver halide photographic light-sensitive material, and more particularly to a drying method capable of drying without causing unevenness in drying.

[0002]

2. Description of the Related Art In recent years, rapid processing has been required in the development processing of silver halide photographic light-sensitive materials, and development processing time has been shortened. In particular, medical X-ray films for medical diagnosis are subjected to development treatment in an extremely short time of 30 to 150 seconds after being inserted into an automatic processor and before being dried and finished. In such short-time development processing, how quickly development and fixing, or further processing such as bleaching is a problem, and yet another important issue is how quickly drying is performed. Will be.

In an automatic processor, if the conveying speed is increased in order to dry the material in a short time, the processed and discharged photosensitive material will be insufficiently dried. In addition, if the drying temperature is raised or the amount of heated air blown onto the film is increased in order to perform sufficient drying, the surface of the film emulsion layer will dry first, and the water remaining inside will be removed quickly. Therefore, the amount of residual water increases, and the film surface becomes glaring, resulting in deterioration of image quality.

Attempts have been made to reduce the time required for drying by using infrared rays for drying. For example, Japanese Patent Laid-Open No. 1-118810
The publication describes a method of increasing the amount of infrared rays on the inlet side more than the amount of infrared rays on the outlet side in infrared drying.

These methods of drying using infrared rays give superior results to the conventional drying using warm air.
When forming an image by ultra-fast processing such as increasing the conveying speed of silver halide photographic light-sensitive material, inserting it into an automatic processor, and drying and finishing in 30 seconds, uneven drying occurs. There was a problem. Further, it was necessary to finely adjust the arrangement of the infrared irradiation lamp, the irradiation amount of infrared rays, the air flow rate used for removing evaporated water, and the like.

It has been attempted to improve the infrared dryer itself in order to improve the above-mentioned defect that the drying unevenness occurs. In JP-A-4-151149, there are three infrared dryers along the film passage in the drying section. , An automatic developing machine has been proposed in which the infrared light sources are arranged so that the infrared light amounts from the infrared light sources located between the two are larger than the infrared light amounts from the infrared light sources located on the inlet side and the outlet side.

[0007]

SUMMARY OF THE INVENTION Therefore, the first object of the present invention is that even if drying is carried out in a short time using infrared rays, unevenness in drying does not occur,
Another object of the present invention is to provide a drying method that does not deteriorate the image quality.
A second object of the present invention is to provide a silver halide photographic light-sensitive material for use in an automatic photographic developing machine which uses infrared rays to dry in a short time.

[0008]

The above object of the present invention has been achieved by the following. (1) In a method of drying a silver halide photographic light-sensitive material using infrared rays in at least a part of a drying step, at least one side of a support is provided with at least one layer of colloidal silica as a silver halide photographic light-sensitive material. A method of drying a silver halide photographic light-sensitive material, comprising using a silver halide photographic light-sensitive material provided with a silver halide emulsion layer. (2) The method for drying a silver halide photographic light-sensitive material as described in (1) above, which is carried out using warm air together with infrared rays. (3) At least a part of the drying step characterized in that at least one side of the support is provided with at least one silver halide emulsion layer containing colloidal silica, and infrared rays are used for at least part of the drying step. Silver halide photographic light-sensitive material used in automatic photo processors.

The present invention will be described in detail below.

In the present invention, any method may be used for drying the silver halide photographic light-sensitive material using infrared rays and is not particularly limited. Further, the silver halide photographic light-sensitive material dried by infrared ray may be a long one or a sheet-like one.

An infrared drying method for a silver halide photographic light-sensitive material will be described with reference to FIG.

In FIG. 1, F is a silver halide photographic light-sensitive material which has been washed with developing water, 1 is a conveying roller group, 1'is a conveying roller group, 2 is a drying tank, 3 is an outlet roller group, 4 is a discharge port, 5
a to 5k are infrared heaters, 6a and 6b are blower fans,
Reference numeral 7 is an exhaust port, and 8 is a guide for guiding the leading end of the conveyed silver halide photographic light-sensitive material F to the outlet roller group 3.

The silver halide photographic light-sensitive material F, which has been subjected to a series of development processes and washed with water, is sent to the drying tank 2 by the conveying roller group 1. Silver halide photographic light-sensitive material F
While being transported by the transport roller 1'in the drying tank 2,
The silver halide photographic light-sensitive material F is heated by infrared rays radiated from infrared heaters 5a to 5k arranged on both sides of the silver halide photographic material F, dried, and discharged from a discharge port 4 through an outlet roller group 3. Dry hot air is blown from the blowing fans 6a and 6b, and the water evaporated from the silver halide photographic light-sensitive material F is discharged from the exhaust port 7. Infrared heater 5a ~
In 5k, reflecting shades are arranged on the side opposite to the silver halide photographic light-sensitive material F, and the infrared rays radiated on the side opposite to the silver halide photographic light-sensitive material F are also exposed. It is designed to be used for heating.

Infrared rays may be indirectly applied to the silver halide photographic light-sensitive material using a reflection plate, but it is preferable to directly irradiate them from the viewpoint of efficiency. Far infrared rays can also be used as infrared rays, and far infrared rays are preferably used. The distance between the infrared heater and the silver halide photographic light-sensitive material is not particularly limited, but from the viewpoint of efficiency, it is better to be as close as possible.

The method of transporting the silver halide photographic light-sensitive material is as follows:
It is appropriately selected depending on whether the silver halide photographic light-sensitive material is long or sheet-shaped.

The method for drying the silver halide photographic light-sensitive material is as follows:
It is preferably used when the silver halide photographic light-sensitive material is processed by an automatic photographic developing machine.

There are various types of automatic photo developing machines such as a hanger automatic photo developing machine, a roll automatic photo developing machine, a sheet automatic photo developing machine, and a cine automatic developing machine. The method for drying the silver halide photographic light-sensitive material of the present invention can also be used for processing.

In the present invention, a silver halide photographic light-sensitive material having at least one silver halide emulsion layer containing colloidal silica is selected in the above method of drying a silver halide photographic light-sensitive material using infrared rays. By using it, the effect of the present invention can be exhibited.

The silver halide emulsion used in the silver halide photographic light-sensitive material of the present invention can be any silver halide such as silver chloride, silver chlorobromide, silver chloroiodide, silver chloroiodobromide and silver iodobromide. However, silver iodobromide is preferable from the viewpoint that high sensitivity can be obtained.

The silver halide grains in the photographic emulsion are isotropically grown grains such as cubes, octahedra and tetrahedra.
Alternatively, it may be a polyhedral crystal type such as a sphere, a twin crystal having a plane defect, or a mixed type thereof. The grain size of these silver halide grains may be from fine grains of 0.1 μm or less to large grains of 20 μm. An emulsion having tabular grains is also preferable. An emulsion having tabular grains is described in, for example, Japanese Patent Application No. 4-78180.

The emulsion used in the silver halide photographic light-sensitive material of the present invention can be produced by a known method. For example, Research Disclosure (RD) No. 18716 (November 1979)
Mon. ・ Pages 22 to 23 1. Emulsion Preparat
ion and types), and No. 18716, page 684.

Further, for example, "The theory" by TH James
of the photographic process, "4th edition, published by Macmillan (1977), pages 38-104, GF Daufin," Photographic Emulsion Chemistry ".
) Focal Press (1966), P. Glafikides "Physics and Chemistry of Photography" (Chimie et Physique Photographiq
ue) Paul Montel (1967), VL Zelikman et al. "Making and coating Phot emulsion"
It can also be prepared by the method described in Focal Press (1964).

As a method for preparing a silver halide emulsion, any of a neutral method, an acidic method, an ammonia method and the like is preferably used. Further, a silver halide solvent other than the ammonia method may be used. Silver halide emulsions are produced using the forward mixing method, the back mixing method, the double jet method, the controlled double jet method and other mixing conditions, the conversion method, the grain preparation conditions such as the core / shell method, and a combination thereof. can do.

The silver halide emulsion of the present invention may be used as a mixture of two or more kinds of silver halide emulsions prepared separately.

In the silver halide emulsion of the present invention, the grain size distribution of the silver halide grains may be either polydisperse having a wide grain size distribution or monodisperse having a narrow grain size distribution. Is preferred.

For the definition of monodispersity, see JP-A-60-16.
No. 2244, and according to the definition, the coefficient of variation with respect to the particle size is 0.20 or less.

A method for producing such a monodisperse emulsion is known, for example, J. Phot. Science 12, pp. 242-251 (1963), JP-A-48-36890, 52-16364, 55-142329. , Ibid 58
-49938, British Patent 1,413,748, U.S. Patent 3,574,628
No. 3,655,394.

A seed crystal is used as the monodisperse emulsion, and an emulsion in which grains are grown by supplying silver ions and halide ions using the seed crystal as a growth nucleus is particularly preferable.

The crystal structure of silver halide may be one having a different silver halide composition between the inside and the outside, for example, a core / shell emulsion, or a silver halide composition having a continuous silver halide composition from the inside to the outside. Different emulsions may be used.

As a method for obtaining a core / shell emulsion, for example, British Patent 1,027,146, US Patents 3,505,068, 4,4,
No. 444,877, JP-A-60-14331 and the like.

One of the preferred embodiments of the present invention is a monodisperse emulsion in which silver iodide is localized inside the grains. A preferred embodiment of the emulsion is a core / shell type monodisperse emulsion having a double structure consisting of a high iodine core portion and a low iodine shell layer. The silver iodide content in the high iodine portion is preferably 10 to 40 mol%, particularly preferably 20 to 35 mol%. The silver iodide content as a whole is preferably 0.1 to 5.0 mol%, more preferably 0.2 to 3.0 mol%.

Such monodisperse emulsions are known, and for example,
J. Phot. Science 12, pp. 242-251 (1963), JP-A-48-3
6890, 52-16364, 55-142329, 58-49938
U.S. Patent No. 1,413,748, U.S. Patent No. 3,574,628, No. 3,
655,394, JP-A-59-177535, 61-116347, 6
Examples thereof include internal high iodine type monodisperse particles disclosed in JP-A Nos. 1-132943, 63-49751, and Japanese Patent Application No. 63-238225.

When the silver halide emulsion of the present invention is an emulsion having tabular grains, it is preferable that the tabular grains have an asbestos ratio of 2 or more.

Such tabular grains have an improved spectral sensitization efficiency,
As improving the graininess and sharpness of the image,
For example, British Patent 2,112,157, U.S. Patent 4,439,520,
No. 4,433,048, No. 4,414,310, No. 4,434,226
No. 58-113927, No. 58-127921, No. 63-1383.
No. 42, No. 63-284272, No. 63-305343, etc., and the emulsion can be prepared by the method described in these publications.

The above-mentioned emulsion may be either a surface latent image type which forms a latent image on the grain surface, an internal latent image type which forms a latent image inside the grain, or a type which forms a latent image on the surface and inside. It may be.

These emulsions may use a cadmium salt, a zinc salt, a lead salt, a thallium salt, an iridium salt or a complex salt thereof, a rhodium salt or a complex salt thereof, an iron salt or a complex salt thereof at the stage of physical ripening or grain preparation. . The emulsion may be subjected to a water washing method such as a Noudel water washing method and a flocculation sedimentation method in order to remove soluble salts. As a preferred water washing method, for example, a method using an aromatic hydrocarbon aldehyde resin containing a sulfo group described in JP-B-35-16086, or an aggregating polymer agent described in JP-B-2-301744, eg G3, A particularly preferable desalting method is a method using G8 or the like.

As the binder of the silver halide emulsion,
Various hydrophilic colloids can be used. The preferred binder is gelatin. The binder that can be used in the present invention is described, for example, in Research Disclosure (RD) No. 17643 (December 1978) and No. 308119 (December 1989). Table 1 shows the locations of description.

In the silver halide emulsion, various photographic additives can be used in the steps before and after physical ripening or chemical ripening. Known additives include, for example, Research Disclosure (RD) No. 17643 (December 1978).
No. 18716 (November 1979) and No. 308119 (198)
The compound described in December, 9) is mentioned. Table 1 shows the types of compounds and the places where they are described in these three Research Disclosures.

[0039]

[Table 1] The hydrophilic colloid layer in the silver halide photographic light-sensitive material has a swelling ratio in water of 280% or less by the above hardening agent, particularly 200-
It is preferably hardened so as to be 280%. The swelling ratio is (A), 21 when the photographic light-sensitive material is stored for 7 days under the conditions of 25 ° C. and 60% RH.
When the thickness of the hydrophilic colloid layer when immersed in distilled water at 0 ° C. for 3 minutes is represented by (B), it is represented by the following formula.

[0040]

[Equation 1] The film thickness (A) can be determined by observing the sample with a scanning electron microscope, and the film thickness (B) is 21
It can be determined by lyophilizing a sample immersed in distilled water at 0 ° C. for 3 minutes with liquid nitrogen and observing it with a scanning electron microscope.

In the present invention, a silver halide photographic light-sensitive material having a silver halide emulsion layer containing at least one layer of colloidal silica on at least one side of a support is selectively used.

The above colloidal silica contains silicon dioxide as a main component, and may contain a small amount of other components such as alumina and sodium aluminate. As a stabilizer for these colloidal silica,
Inorganic bases such as sodium hydroxide, potassium hydroxide, lithium hydroxide, ammonium hydroxide and organic bases,
For example, it may contain tetrameryl ammonium.
The average particle size of colloidal silica is in the range of 5 mμ to 1 μ, and the preferred average particle size is 5 mμ to 500 mμ.

These colloidal silicas are known and can be easily produced by a known method. Also, colloidal silica is commercially available. Examples of commercially available colloidal silica include Snowtex C,
There are Snowtex 0, Snowtex 20, and Snowtex 30 (trade name, manufactured by Nissan Kagaku Co., Ltd.).

The colloidal silica may be added to the silver halide emulsion at any stage of preparing the silver halide emulsion, but it is preferably added after physical ripening or chemical ripening. The colloidal silica may be added to the silver halide emulsion at the same time as the addition of other additives, or before or after the addition of other additives.

The amount of colloidal silica added is preferably as long as it does not adversely affect the photographic performance, but the upper limit is limited in relation to the photographic performance. When gelatin is used as a binder, the amount of colloidal silica added is preferably 0.01 to 2.0, and more preferably 0.05 to 1.0, particularly preferably 1 to 1 gelatin based on dry weight.
It is 0.05 to 0.5.

The amount of silver halide used in the silver halide photographic light-sensitive material is not particularly limited, but it is preferably 5.0 g / m ² or less and 1.0 g / m ² or more in terms of the amount of silver per one side. It is preferably 3.5 g / m ² or less and 1.0 g / m ² or more.

The amount of silver relative to the gelatin binder is not particularly limited, but it is preferable to use the silver amount (weight) / gelatin (weight) ratio in the range of 0.01 to 5.0 depending on the purpose.

When the silver halide photographic light-sensitive material has a plurality of silver halide emulsion layers, a plurality of silver halide emulsion layers may be provided on one side of the support, and both sides of the support may be provided. It may be provided. Colloidal silica may be contained in all of the plurality of silver halide emulsion layers, or may be contained in some of the silver halide emulsion layers. When colloidal silica is contained in a part of the silver halide emulsion layer, it is preferable that the silver halide emulsion layer farthest from the support contains colloidal silica.

Examples of the support usable in the light-sensitive material of the present invention include Research Disclosure (RD) No. 17643, page 28 and No. 308119, l00.
Examples of suitable supports include those described on page 9, but plastic films, paper coated with polyethylene, etc. are suitable supports, and an undercoat layer is provided on the surface of these supports to improve adhesion of the coating layer. Alternatively, corona discharge, ultraviolet irradiation, or the like may be performed.

The silver halide photographic light-sensitive material of the present invention is, for example, a black and white negative photographic light-sensitive material, a color negative photographic light-sensitive material, a color reversal photographic light-sensitive material, a color paper photographic light-sensitive material, a direct positive photographic light-sensitive material, an X-ray photographic light-sensitive material. The material may be a photographic light-sensitive material for printing.

When the silver halide photographic light-sensitive material is a color photographic light-sensitive material, couplers such as magenta couplers, yellow couplers and cyan couplers are used.

Various magenta couplers, yellow couplers and cyan couplers can be used.

As the magenta coupler, 5-pyrazolone compounds and pyrazoloazole compounds are preferable, and US Pat. Nos. 4,310,619, 4.351,897 and European Patent 73,636 are preferred.
U.S. Pat. Nos. 3,061,432 and 3,725,067, Research Disclosure (RD) No. 24220 (1984, 6
Mon), JP-A-60-33552, Research Disclosure (RD) No. 24230 (June 984), JP-A-60-43659.
No. 61, No. 72238, No. 60-35730, No. 55-118034,
No. 60-185951, U.S. Pat.Nos. 4,500,630, and 4,540,6.
Those described in No. 54, No. 4,556,630, International Publication WO88 / 04795 and the like are particularly preferable.

Examples of yellow couplers include US Pat. Nos. 3,933,051, 4,022,620, and 4,326,024.
No. 4,401,752, No. 4,248,961, No. 58-10
739, British Patents 1,425,020, l, 476,760, U.S. Patents 3,973,968, 4,314,023, 4,511,649.
And those described in European Patent No. 249,473A, etc. are preferred.

Examples of cyan couplers include phenol-based and naphthol-based couplers. US Pat. No. 4,052,
No. 212, No. 4, l46,396, No. 4,228,233, No. 4,29
No. 6,200, No. 2,369,929, No. 2,801,171, No. 2,7
72, l62, 2,895,826, 3,772,002, 3,
758,308, 4,334,011, 4,327, l73, West German Patent Publication 3,329,729, European Patent l21,365A, 2
49,453A, U.S. Pat.Nos. 3,446,622 and 4,333,999.
No. 4,775,616, No. 4,451,559, No. 4,427,76
No. 7, No. 4,690,889, No. 4,254,212, No. 4,296, l
Those described in, for example, 99 and JP-A No. 61-42658 are preferable.

Further, various couplers can be used in the present invention, and specific examples thereof are described in Research Disclosure (RD) No. l7643 and No. 308119 below. Table 2 shows the relevant locations.

[0057]

[Table 2]

[0058]

EXAMPLES Examples of the present invention will be described below.
The present invention is not limited to the examples described below. Example 1 <Preparation of Emulsion E-1> 5 g of potassium bromide in 1 liter.
g, potassium iodide 0.05 g, gelatin 30g and thioether _{(HO (CH 2) 2 S} (CH 2) 2 S (CH 2) 2 OH) aqueous solution maintained at 70 ° C. with 5% aqueous 2.5cc of stirring On the other hand, an aqueous solution containing 8.33 g of silver nitrate and an aqueous solution containing 5.17 g of potassium bromide and 1.80 g of potassium iodide were added to the aqueous solution by the double jet method for 60 seconds. Subsequently, 2.5 g of potassium bromide was added, and then an aqueous solution containing 8.33 g of silver nitrate was added over 7 minutes and 30 seconds while accelerating so that the flow rate at the end of addition was twice the flow rate at the start of addition. Subsequently, silver nitrate 153.34g
The flow rate at the end of the addition is 8 times the flow rate at the start of the addition, while the pAg is kept at 8.1 and the aqueous solution containing the equimolar potassium bromide is used for 35 minutes with the control double jet method. Was added as accelerated. After completion of the addition, 15 cc of 2N potassium thiocyanate solution was added, and further 50 cc of 1% potassium iodide aqueous solution was added over 30 seconds. After that, the temperature was lowered to 35 ° C., the soluble salts were removed by the precipitation method, the temperature was raised to 45 ° C., 24 g of gelatin and 0.8 g of phenol were added, and the pH was adjusted to 6.40 using sodium hydroxide and potassium bromide. Adjust pAg to 8.45 and Emulsion E-
Got 1.

The resulting emulsion E-1 had an average diameter of 0.83 μm and an average thickness when the diameter of silver halide grains was represented by the diameter of a circle having the same area as the projected area of silver halide grains.
It contained 0.161 μm, an average aspect ratio of 5.16, and silver halide grains having a silver iodide content of 0.46 mol%. <Preparation of Emulsion E-2> Average particle size of 0.2 by double jet method.
An emulsion having monodispersed cubic silver iodobromide grains of 10 μm and a silver iodide content of 2.0 mol% was prepared. When preparing the temperature
The temperature was maintained at 60 ° C and pAg was controlled at 8.0 and pH was controlled at 2.0. Then, the above emulsion was kept at 40 ° C., an ammoniacal silver nitrate solution and a solution containing potassium iodide and potassium bromide were added by a double jet method, and the above-mentioned silver iodobromide monodispersed cubic grains (seed grains) were added. A first coating layer containing 30 mol% of silver iodide was formed. Upon formation, the pAg of the emulsion was controlled at 8.0 and the pH was controlled at 8.5. The addition rate of the ammoniacal silver nitrate solution and the solution containing potassium iodide and potassium bromide was gradually increased as the grains grew.

The resulting emulsion was octahedral and had an average grain size of 0.
It was a monodisperse emulsion with silver halide grains of 185 μm.

Ammoniacal silver nitrate solution and potassium bromide solution were added to the obtained emulsion by the double jet method to give a second emulsion.
A coating layer was formed. The pAg of the emulsion was 11.
The pH was controlled at 0 and 8.5. Then Demol-N
(Manufactured by Kao Atlas) and magnesium sulfate aqueous solution for precipitation desalination to remove excess salts, and an aqueous gelatin solution containing 18 g of ossein gelatin per 1 mol of silver was added,
Redispersion with stirring gave Emulsion E-2. Emulsion E-2 obtained
Was an octahedron, which was a monodisperse emulsion having silver halide grains having an average grain size of 0.58 μm and a silver iodide content of 0.7 mol%. <Preparation of Emulsion Coating Solution> Obtained Emulsion E-1 and Emulsion E-
Pure water was added to each of 2 so that the volume per mol of silver was 400 ml, and the spectral sensitizing dye A and the spectral sensitizing dye B described later were added while maintaining at 50 ° C. The addition amount of the spectral sensitizing dye was 540 mg per mol of silver halide to the emulsion E-1, and 400 mg to the emulsion E-2. The addition of the spectral sensitizing dye A and the spectral sensitizing dye B was performed. The weight ratio was 100 for spectral sensitizing dye A and 1 for spectral sensitizing dye B.

After 10 minutes, ammonium thiocyanate was added to the emulsion E-1 at 2 × 10 ^-3 mol / mol silver and to the emulsion E-2 at 4 × 10 ^-3 mol / mol silver. In addition, an appropriate amount of chloroauric acid and hypo were added to start chemical ripening.

For Emulsion E-1, AgI fine particles were added at 4.0 g and 3.0 g per mol of silver 70 minutes before the completion of chemical ripening (15 minutes after the start of chemical ripening), and then 4
-Hydroxy-6-methyl-1,3,3a, 7-tetrazaindene was added to complete the chemical ripening. Also, E-2
About 15 minutes before the end of chemical aging (
After a minute), 200 mg of potassium iodide is added per 1 mol of silver,
Five minutes later, add a 10% (wt / vol) acetic acid solution to adjust the pH.
The pH value was lowered to 5.6 and maintained at that pH value for 5 minutes, and then a 0.5% (wt / vol) solution of potassium hydroxide was added to return the pH to 6.15, and then 4-hydroxy-6-methyl-1,3,3.
Chemical ripening was completed by adding a, 7-tetrazaindene.

(Spectral sensitizing dye A) 5,5'-dichloro-9-ethyl-3,3'-di- (3
-Sulfopropyl) -oxacarbocyanine sodium salt anhydride (spectral sensitizing dye B) 5,5'-di- (butoxycarbonyl) -1,1'-diethyl-3,3'-di- (4-sulfobutyl) ) -Anhydride of benzimidazolocarbocyanine sodium salt The following additives were added to Emulsion E-1 and Emulsion E-2 which had been chemically ripened to prepare an emulsion coating solution. The addition amount is shown as the amount per mol of silver halide.

[0065]

[Chemical 1] The pH after preparation of the emulsion coating solution was 6.20 and the silver potential was 80 mV (35
C.) was adjusted using sodium carbonate and potassium bromide solution. <Preparation of protective layer solution> A protective layer solution was prepared using the following additives. The added amount is shown as an amount per 1 liter of the coating liquid.

[0066]

[Chemical 2] <Preparation of photographic light-sensitive material sample> Glycidyl methacrylate was coated on both sides of a polyethylene terephthalate film base for X-ray film with a thickness of 175 μm that was colored blue at a concentration of 0.15.
An undercoat layer is formed by applying an aqueous dispersion liquid in which a copolymer composed of three types of monomers of 50% by weight, 10% by weight of methyl acrylate and 40% by weight of butyl methacrylate is dispersed to a concentration of 10% by weight. The above emulsion coating solution and protective layer solution were coated on the support, and a photographic emulsion layer and a protective layer were formed on both sides of the support to prepare a photographic light-sensitive material sample.

The emulsion coating solution and the protective layer solution were coated by double-sided simultaneous coating using two slide hopper type coaters at a speed of 80 m / min. The drying time was 2 minutes and 20 seconds.

The coating amount is 0.9 g / m ^{2 in} terms of gelatin on the protective layer and 1.9 g / m ² in terms of metallic silver equivalent on the photographic emulsion layer on one side. In preparing the sample, the amount of gelatin in the emulsion coating solution was adjusted so that the amount of gelatin in the photographic emulsion layer was the amount shown in Table 3, and the amount of colloidal silica shown in Table 3 was contained in the photographic emulsion layer. Thus, colloidal silica was added to the emulsion coating solution. <Evaluation of Photosensitive Material Sample> The obtained samples were evaluated as follows. [Sensitometry] "New / Lighting Data Book"
(Illumination Society of Japan, 1st edition, 2nd printing) Using the standard light B described on page 39 as the light source, the sample was exposed for 0.1 second and the CM was 3.2 CM.
So-called white exposure was performed in which the exposure was performed with S using a non-filter. A wedge was used for the exposure, and the film was exposed from both sides of the film so that the light intensity on both sides of the film was the same, and then developed.

For the development processing, the automatic developing machine SRX-1 is used.
Processing was carried out according to the following processing steps using an automatic developing machine modified from 001 (manufactured by Konica Corporation).

Infrared drying was used as shown in Table 3 in drying the samples. When infrared drying was not used, the temperature and volume of the drying air were raised so that defective drying would not occur.

The sensitivity was obtained from the reciprocal of the amount of light required to increase the blackening density by 1.0, and the sensitivity of Sample No. 1 was evaluated as a relative sensitivity of 100. The results are shown in Table 3. Processing process Processing temperature (℃) Processing time (sec) Replenishment amount Insertion − 0.7 Development + crossover 35 10.5 270 ml / m ² Fixing + crossover 33 7.8 430 ml / m ² Washing + crossover 18 6.3 7.0 liters / min Squeeze 40 5.3 Drying-6.4 Total-37.0 The composition of the developer and fixer used in the above processing steps is as follows. Developer formulation Part-A (for finishing 15 liters) Potassium hydroxide 470 g Potassium sulfite (50% solution) 3000 g Sodium hydrogencarbonate 150 g Diethylenetriamine 5 acetic acid 5 sodium 45 g 5-Methylbenzotriazole 2.0 g 1-Phenyl-5-mercaptotetrazole 0.2 g Hydroquinone 390g Add water to make up to 5000ml.

Part-B (for finishing 15 liters) Glacial acetic acid 220 g Triethylene glycol 200 g 1-Phenyl-3-pyrazolidone 27 g 5-Nitroindazole 0.45 g n-Acetyl-D, L-penicillamine 0.15 g Water was added to 5000 ml To finish. Starter (for finishing 1 liter) Glacial acetic acid 138 g Potassium bromide 325 g 5-Methylbenzotriazole 1.5 g Add water to make 1 liter. Fixer formulation Part-A (19 liter finish) Ammonium thiosulfate (70 wt / vol%) 4000 g Sodium sulfite 175 g Sodium acetate trihydrate 400 g Sodium citrate 50 g Gluconic acid 38 g Boric acid 30 g Glacial acetic acid 140 g Part-B (19 liter) For finishing) Aluminum sulfate 65g Sulfuric acid (50wt%) 105g [Evaluation of drying unevenness] A large-angle sample is exposed uniformly over the entire surface so that the density after development is about 1.0, and the same sensitometry as described above is applied. Processed. The developed sample was observed on Schaukasten, and the degree of occurrence of drying unevenness was visually evaluated. The evaluation criteria are as follows. The results are shown in Table 3.

A: Almost no generation was observed B: Slightly generated C: Large amount generated D: Occurred on the entire surface [Evaluation of blackening of scratches] Two samples obtained were prepared, and 23
After left in an environment of 60 ° C. and 60% RH for 3 hours, the films were rubbed together and subjected to the same development process as in the above sensitometry. The sample subjected to the development treatment was observed, and the degree of occurrence of blackened scratches was visually evaluated. The evaluation criteria are as follows. The results are shown in Table 3.

A: No occurrence of scratches was observed B: Some occurrence (within practical range) C: Many occurrences (outside of practical range) D: Very many occurrences [Evaluation of scratch resistance of developed sample ] A sample having a size of 10 cm × 30 cm was exposed uniformly over the entire surface so that the density after development was about 1.0, and the same development as in the above sensitometry was performed. The developed sample was placed on a flat table, a metal weight having a weight of 1 kg was placed thereon, and the film was reciprocated 5 times from one end to the other end. To facilitate evaluation, remove the protective layer and photographic emulsion layer on the side opposite to the side rubbed with a weight with a commercially available bleach (such as Higher) and observe on a Schaukasten to visually check the occurrence of scratches. It was evaluated by. The evaluation criteria are as follows. The results are shown in Table 3.

A: Almost no generation was observed B: Slightly generated C: Many generated D: Occurred on the entire surface

[0076]

[Table 3] As is clear from Table 3, the samples of the present invention are less likely to cause uneven drying, and are excellent in scratch blackening and scratch resistance after development.

[0077]

According to the present invention, it is possible to prevent drying unevenness that occurs when drying is performed quickly using infrared rays.

[Brief description of drawings]

[0078]

FIG. 1 is an explanatory view illustrating an infrared drying method for a silver halide photographic light-sensitive material.

Claims (3)

[Claims] 1. A method of drying a silver halide photographic light-sensitive material using infrared rays in at least a part of a drying step, wherein as a silver halide photographic light-sensitive material, at least one side of a support is provided with at least one layer of colloidal. A method for drying a silver halide photographic light-sensitive material, which comprises using a silver halide photographic light-sensitive material provided with a silver halide emulsion layer containing silica. 2. The method for drying treatment of a silver halide photographic light-sensitive material according to claim 1, which is carried out by using warm air together with infrared rays. 3. At least a part of the drying step characterized in that at least one side of the support is provided with at least one silver halide emulsion layer containing colloidal silica so that infrared rays are used. Silver halide photographic light-sensitive material used in automatic photo processors.