JPH05323498A - Silver halide photographic sensitive material and picture forming method using the material - Google Patents

Abstract

PURPOSE:To obtain a silver halide photographic sensitive material for the laser beam suitable for the high-speed automatic development by incorporating an antihalation dye and specifying the density before and after development for the wavelength corresponding to the laser beam used by the spectral extinction of the dye. CONSTITUTION:This silver halide photographic sensitive material to be exposed by the laser beam has at least one silver halide emulsion layer on a support, and an antihalation dye is incorporated into the support or photograph constituting layer. The density of dye is controlled to >=0.4 for the wavelength of the laser beam used by the spectral extinction of the dye, and spectral extinction of the dye is controlled to >=0.2 after development for the wavelength of the used laser beam when the fluctuation in the average visual density except the support density and emulsion fogging density is controlled to <=0.02. Besides, the blue density of the unexposed part is controlled to 0.05-0.30 average visual density except the support density.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-sensitive material for a laser light source, and more particularly to a silver halide photographic light-sensitive material for a laser light source which is excellent in high-speed processing in automatic development processing.

[0002]

2. Description of the Related Art In recent years, medical image diagnostic apparatuses have been on the increase with the progress of computer technology. As a result, the number of hard copies as a diagnostic record is remarkably increased, and for this reason, it is strongly desired to speed up and downsize the imager. In particular, the speedup of the laser imager integrated with the automatic processor is because waiting time is generated even if the exposure speed of the imager is increased unless the speed of automatic development processing of the photosensitive material used is increased. High-speed processability of the light-sensitive material has been strongly desired. Conventionally, when the processing speed of automatic development processing was increased, it was discolored by elution from the photosensitive material into the processing solution, decomposition due to changes in hydrogen ion concentration, reduction by sulfite ions, etc., during development, fixing and washing with water. There is a problem that a strong residual color is generated because the treatment is completed before the reactions of the antihalation dye sufficiently proceed. Further, these reactions are more likely to proceed as the washing water temperature is higher. Therefore, even if the unevenness is not recognized, the residual color level may change due to the different washing water temperatures depending on the season. It is common in Japanese hospitals that the temperature of washing water is 5 to 6 degrees Celsius in winter and exceeds 30 degrees Celsius in summer. For medical images, it is often compared with images taken several months ago for the purpose of follow-up observation, and it is not preferable that the color of the image changes depending on the season. For these measures, maintaining the washing temperature at a constant temperature is not practical because energy loss increases and a space for installing a device for maintaining the constant temperature is required. In order to accelerate these reactions, introduction of a water-soluble group such as a sulfonic acid group or a carboxylic acid group into the dye was devised and disclosed in JP-A-62-123454. However, the increase in processing speed is remarkable especially in the light-sensitive material for laser light source, and there is a limit in dealing with these. Also, the antihalation dye selected was limited.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a silver halide photographic light-sensitive material for a laser light source, which has excellent suitability for speeding up automatic development processing. Further, it is to actively utilize a hydrophobic dye which has been rarely used as an antihalation dye.

[0004]

The above object of the present invention is to provide a silver halide photographic light-sensitive material for laser exposure having at least one silver halide emulsion layer on a support, in the support or in a photographic constituent layer. Contains an antihalation dye, and has a density of 0.4 before development for a wavelength corresponding to a laser beam used for spectral absorption of the antihalation dye.
The above is the silver halide photograph for laser exposure, which has a density of 0.2 or more when the fluctuation of the average visual density after the development processing except the density of the support and the emulsion fog density is 0.02 or less. Achieved with a light-sensitive material. The concentration of the antihalation layer before the development treatment is preferably 0.45 or more, and particularly preferably 0.5 or more with respect to the laser light used. Further, when the laser imager is a flat bed type scanner, 0.7 or more is preferable.

Any laser light source may be used for exposing the light-sensitive material of the present invention. For example, ion gas lasers such as argon and krypton, metal vapor lasers such as copper, gold, sodium, barium and cadmium, solid state lasers such as ruby and YAG, excimer lasers, H
Examples include an e-Ne laser, an argon laser, and a semiconductor laser such as gallium-arsenic. Particularly preferred are red-emitting semiconductor lasers and infrared-emitting semiconductor lasers. Small size, low cost, stability, reliability,
It excels in durability and ease of modulation. Then H
An e-Ne laser and an argon laser are preferable.

The antihalation dye in the present invention is added to the support or the photographic constituent layer. Examples of the photographic constituent layer include a silver halide emulsion layer, an intermediate layer, an undercoat layer and a backing layer, and the intermediate layer and the backing layer are preferably non-photosensitive hydrophilic colloid layers. Antihalation dyes can be added to the non-photosensitive hydrophilic colloid layers on both sides of the support. When the emulsion layer is provided on only one side of the support, the antihalation layer is preferably provided on the opposite layer (backing layer), and it is also preferably provided as a layer between the emulsion layer and the support. The content of the antihalation dye may be any concentration as long as it is effective for the intended purpose. If the antihalation layer has a spectral absorption density of 0.3 or less with respect to the laser light used, the sharpness of the antihalation layer exceeds the limit and cannot be used. Therefore, the spectral absorption density is 0.4 or more, preferably 0.
It is necessary to have an absorption of 45 or more, particularly preferably 0.5 or more. Further, it is important that the color tone of the obtained hard copy does not cause any problem during observation. Conventionally, an antihalation dye has introduced a water-soluble group in order to accelerate the elution of the dye from the photosensitive material into the processing solution during the automatic development processing. However, with the speeding up of the automatic development processing system, there is a limit to the elution of dyes, which is a problem as residual color.

If the elution of the dye is carried out uniformly over the whole, even if it remains as a residual color, it can be accepted without any problem at the time of observation. There are few colors, and the residual color at the center and the rear end is strong, resulting in unevenness. As for the residual color unevenness, the fluctuation of the average visual density is 0.
It is visually recognized to be 02 or more. In the automatic development processing, the fluctuation of the average visual density must be 0.02 or less except the support density and emulsion fog density. We have
It has been found that the residual color unevenness is improved by suppressing the elution property of the antihalation dye, which was conventionally eluted by introducing the water-soluble group, in the opposite manner to the conventional one. It was also found that the residual color change due to the washing water temperature was small. In particular, it has been found that dyes that are insoluble or sparingly soluble in water give favorable results.
The residual color unevenness is less noticeable as the dye absorbs less in the visible region. Therefore, the antihalation dye has a sufficient density of 0.4 or more for the laser light used,
In addition, it is desirable that the material absorbs less visible light, or that the residual color is useful for observation. In particular, a dye having absorption for an infrared-emitting semiconductor laser is preferable because the residual color is pale blue. The water-soluble antihalation dye, which has been widely used in the past, does not cause uneven residual color if a small amount is used. Therefore, a water-insoluble or sparingly soluble antihalation dye and a water-soluble antihalation dye can be used in combination.

Usually, a laser imager film for medical image recording has a support containing a blue dye in an average visual density of about 0.1 to 0.3. The film for a laser imager according to the present invention can utilize the color of the antihalation dye remaining after the treatment when the antihalation dye has a light blue color. That is, a colorless or light blue support is used so that the blue density is 0.04 to 0.3 in the residual color, and the support or the backing layer, intermediate layer, antihalation layer, emulsion layer, protective layer of the light-sensitive material are used. Combined with the blue dye contained in any of the layers,
By obtaining a blue density of 0.3, the amount of the support coloring dye used can be greatly reduced. The dye used for the antihalation layer of the film for a laser imager according to the present invention is preferably a blue dye, and then a dye having a small absorption of visible light in the vicinity of 450 to 700 nm is desirable.

When the antihalation dye that has remained uncolored has an unfavorable tint, it is preferable to correct it with a dye. For example, correction is made by adding cyan and magenta dyes to the yellowish residual color,
There can be no real harm. These color tone adjusting dyes are preferably dyes such as anthraquinone type which will be described later. The dye is a support, a support-adjacent layer, an emulsion layer, an intermediate layer,
It may be contained in any one or a plurality of layers constituting the photographic light-sensitive material such as a back layer and a protective film layer. For these reasons, dyes used in the antihalation layer for infrared emitting semiconductor lasers are particularly preferable. Next preferably He-Ne
It is an antihalation layer for lasers and red semiconductor lasers. Similarly, the antihalation layer for a laser beam having a wavelength shorter than 420 nm is preferable because most of the ultraviolet absorbing dyes used are almost colorless or very pale yellow in the visible region.

As the ultraviolet absorber used as the antihalation dye for the ultraviolet laser according to the present invention, it is preferable to use an ultraviolet absorber having a peak at 300 to 400 nm. More preferably, it is 300 to 38.
It is an ultraviolet absorber having a peak at 0 nm. As the ultraviolet absorber, for example, a benzotriazole compound substituted with an aryl group, a 4-thiazolidone compound, a benzophenone compound, a cinnamic acid ester compound, a butadiene compound, a benzoxazole compound, and an ultraviolet absorbing polymer can be used. Specific examples of the ultraviolet absorber,
US Pat. Nos. 3,533,794 and 3,314,794
No. 3,352,681, JP-A-46-2784
U.S. Pat. Nos. 3,705,805 and 3,707,3.
No. 75, No. 4,045,229, No. 3,700,45
5, 3,499,762, West German patent application publication 1,
No. 547,863 and the like.

Next, the antihalation dye according to the present invention will be described in detail with reference to specific examples of the infrared absorbing dye which is the most preferable embodiment.

As the infrared absorbing dye, a cyanine dye,
Phthalocyanine dyes, pyrylium-based / thiopyrylium-based dyes, azurenium-based dyes, squarylium-based dyes,
Metal complex salt dyes such as Ni and Cr, naphthoquinone dyes / anthraquinone dyes, indophenol dyes, indoaniline dyes, triphenylmethane dyes, triallylmethane dyes, aminium dyes, diimmonium dyes, and nitroso compounds. be able to. Among these, it is preferable to use one having a high absorption rate of light in the near-infrared region having a wavelength of 700 nm to 900 nm from the viewpoint of practical use of a semiconductor laser that oscillates near-infrared light. Specific examples thereof include dyes represented by the following formula.

(1) Cyanine dye: (CH ₃ ) ₂ N-
_{(CH = CH) 5 -CH =} + N (CH 3) 2 ClO 4

[0014]

[Chemical 1]

(Where n is 2 or 3),

[0016]

[Chemical 2]

(However, R is a hydrogen atom or N (CH ₃ ) ₂
, A- (CH = CH) _n -CH = B, where A is a group represented by the following formula:

[0018]

[Chemical 3]

B is a group represented by the following formula:

[0020]

[Chemical 4]

[0021]

[Chemical 5]

R is an alkyl group, X is a counter ion, and a benzene ring or a naphthalene ring may optionally have a chlorine atom, an alkyl group, an alkoxy group or an aryl group. n is an integer of 0-3.

[0023]

[Chemical 6]

(Wherein R is an alkyl group and X is a halogen atom),

[0025]

[Chemical 7]

(Wherein R is a substituted or unsubstituted alkyl group, an alkoxy group or an alkenyl group, X is a hydrogen atom or a halogen atom, and Y is a halogen, perchlorate, a substituted or unsubstituted benzene sulfonate, or a para group. Toluene sulfonate, methyl sulfate, ethyl sulfate, benzenecarboxylate, methylcarboxylate or trifluoromethylcarboxylate, n is an integer of 0 to 3),

[0027]

[Chemical 8]

(However, R ¹ , R ² and R ³ are each a substituted or unsubstituted alkyl group and may be the same or different, and X ⁻ is a perhalogenate ion or toluenesulfonic acid. Is an ion or an alkylsulfate ion, and n is an integer of 0 to 3. 4 of the indolenine ring
A halogen atom is present in at least one of the 5-, 6-, and 7-positions, and in some cases, a halogen atom may be present in another position. The benzene ring may be optionally substituted with an alkyl group, an alkoxy group, a hydroxy group, an allyl group or an alkali carbonyl group),

[0029]

[Chemical 9]

(However, A¹And A²Is hydrogen source
Child or substituent, Z is necessary for forming a 5-membered heterocycle
Atomic group, R¹~ R^FourAre hydrogen atoms or substituents, respectively.
R ^FiveIs a 6-membered heterocycle with Z
May be done, X^-Is an anion, and n is an integer of 0 to 2
Is a number),

[0031]

[Chemical 10]

Chemical formula Φ-L = Ψ (X ⁻ ) _m (where Φ and Ψ are indole ring residue, thiazole ring residue, oxazole ring residue, selenazole ring residue, which may be condensed with aromatic rings, respectively) Group, an imidazole ring residue or a pyridine ring residue, L is a linking group for forming monocarbocyanine, dicarbocyanine, tricarbocyanine or tetracarbocyanine, and m is 0 or 1.). Particularly preferred are the compounds represented by the following general formula described in JP-A-2-2074.

[0033]

[Chemical 11]

In the formula, R ¹ , R ² , R ³ , R ⁴ and R ⁵ each independently represent a substituted or unsubstituted alkyl group,
You may form a ring through a methine chain. Z ¹ and Z ² each represent a hydrogen atom or an atomic group necessary for forming a substituted or unsubstituted aromatic ring. Y ¹ and Y ² represent a carbon atom substituted with an alkyl group, a vinylene group, an oxygen atom, a sulfur atom or a selenium atom. J represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a halogen atom, or a nitrogen atom substituted with an atom necessary for forming a 5- or 6-membered ring, and n is 0 or 1 and X is a monovalent anion. Preferably, R ¹ and R ² are methyl groups, J is hydrogen, R ³ and R ⁴ form a 6-membered ring, and Z ¹ and Z ² are benzene substituted with a nitro group, a halogen atom or a cyano group. It represents atoms forming a ring, and is the case where Y ¹ and Y ² are dialkyl-substituted carbon atoms. Examples of preferred compounds included in the above general formula include compounds 1 to 12 described in JP-A-2-2074.

Further, squalium dye, azurenium dye, indophenol dye, metal complex dye,
Naphthoquinone-based and anthraquinone-based dyes can also be preferably used.

The antihalation dye according to the present invention is preferably insoluble or sparingly soluble in water, but even a dye soluble in water can be practically used as a sensitizer by using a mordant layer or setting the film quality. Therefore, it is possible to prevent the dye from eluting, and the embodiment of the present invention facilitates the use of the water-soluble dye even in the rapid treatment while reducing the occurrence of unevenness. If a hydrophobic dye that is sparingly soluble or insoluble in water is contained in the hydrophilic photographic material constituting layer as it is, problems due to aggregation tend to occur. It is particularly preferable that the hydrophobic antihalation dye according to the present invention is used as an emulsion that is emulsified and dispersed after being dissolved in an organic solvent that is sparingly soluble or insoluble in water.

When the antihalation dye remaining in the light-sensitive material is used for adjusting the color tone, a preferred dye is a hydrophobic dye having an absorption maximum at 570 to 700 nm, such as anthraquinone type and azo type dyes. Azomethine type, indoaniline type, oxonol type, triphenylmethane type, carbocyanine type, styryl type, and the like having a desired maximum value can be selected. These dyes can be used in the photographic light-sensitive material constituting layer in the form of a dispersion prepared by dispersing the dye in the form of a high boiling solvent and / or a low boiling solvent separately or in admixture with the above antihalation dye. Further, when it is contained in the support, appropriate means such as kneading can be taken. As a result, the residual color, which was conventionally disliked, was positively utilized to overcome the bleaching problem of the antihalation dye, which was limited in its speed because of the diffusion rate control. The visual density of the above dye is
TD manufactured by Macbeth Co. in the case of a light-sensitive material for image observation by transmission
It is an average value of n = 5 of values measured using a visual filter with a -904 densitometer. In the case of a light-sensitive material for observing an image by reflection, it is an average value of n = 5 of values measured by a Macbeth RD-917 type densitometer using a visual filter. In the present invention, examples of specific compounds of dyes used for such purpose include JP-A-3-231.
Compound Examples Nos. 3 to 7 of Japanese Patent Publication No. 738
No. 1 to No. 36 and No. 37 to No. 56.

The silver halide light-sensitive material for a laser light source of the present invention has one or more silver halide emulsion layers on one side or both sides of the support. The type of silver halide emulsion used in the present invention may be any negative silver halide emulsion, such as a negative type, an internal latent image type autopositive using a nucleating agent, and a precoat type autopositive using an electron trapping agent. The photosensitive silver halide used in the present invention may be, for example, silver bromide, silver iodobromide, silver chloride, silver chlorobromide, silver chloroiodide, silver chloroiodobromide, etc., but particularly silver bromide, Silver iodobromide, silver chlorobromide and silver chloroiodobromide are preferred. The silver iodide in the silver halide is preferably 0 to 4 mol%, particularly preferably 0 to 2 mol%. The silver chloride content in the silver halide is preferably 80 mol% or less, more preferably 40 mol% or less.

These emulsions have an average grain size (for example, measured by the projected area method or number average method) of about 0.2.
To 0.6 μm emulsion grains are preferred. The average particle size of 0.25 to 0.5 μ is more preferable. The emulsion may be a mixture of coarse particles and fine particles. The particle shape is cubic, octahedron, tetradecahedral, potato-like, spherical, plate-like, and the plate-like shape having a particle diameter of 5 times or more of the particle thickness (see Research Disclosure Item No. 2253 for details).
4p. 20-p. 58 (described in January 1983)). Of these, tabular silver halide grains are particularly preferred. A substantially non-photosensitive emulsion (for example, an internally fogged fine grain emulsion) may be mixed with these photosensitive emulsions. Of course, they may be applied in separate layers.

Further, even if the crystal structure of the silver halide grains is uniform to the inside, it has a layered structure in which the inside and the outside are different, British Patent 635,841 and US Pat. It may be a so-called conversion type as described in No. 622,318. When forming the silver halide grains, as a silver halide solvent for controlling the growth of the grains, for example, ammonia, rodancali, rodanammon, and a thioether compound (for example, US Pat. Nos. 3,271,157 and 3,574,
No. 628, No. 3,704, 130, No. 4, 29
7,439, 4,276,374, etc.) thione compounds (for example, JP-A-53-144319, JP-A-5-144319).
No. 3-82408, No. 55-77737, etc.), amine compounds (for example, JP-A-54-100717, etc.)
Etc. can be used. In addition to the silver halide solvent, a compound that is adsorbed on the grain surface to control the crystal habit, such as a cyanine dye, a tetrazaindene compound, or a mercapto compound, can be used during grain formation. The silver halide emulsion used in the present invention may be monodisperse or polydisperse, but monodispersion is preferred. Two or more kinds of monodisperse emulsions having different grain sizes may be mixed and used. The emulsion of the present invention may be either a negative type or an autopositive type (internal latent image type using a nucleating agent and precoating type using an electron capture agent).

The silver halide emulsion of the light-sensitive material of the present invention may contain metal ions such as iridium ions. For example, in order to contain iridium ions, it is common to add a water-soluble iridium compound (eg hexachloroiridium (IV) salt) in the form of an aqueous solution when preparing a silver halide emulsion. It may be added in the form of the same aqueous solution as the halide for grain formation, or added before grain formation,
It may be added during grain formation or during chemical sensitization after grain formation, but it is particularly preferable to add during grain formation.

The negative emulsion used in the present invention is a chemical sensitizing method which is usually used, for example, sulfur sensitization (US Pat. Nos. 1,574,944 and 2,278,947,
No. 3,021,215, No. 3,635,717, etc.), reduction sensitization (US Pat. No. 2,518,698,
Research Disclosure V
ol. 176 (1978.12) 17643, item 3, etc.) and sensitization with thioether compounds (for example, US Pat. Nos. 2,521,926 and 3,021,215,
No. 3,046,133, No. 3,165,552
Issue No. 3,625,697, No. 3,635,71
No. 7, No. 4,198,240, etc.), or various sensitizing methods combined therewith. More specific chemical sensitizers include sulfur sensitizers such as sodium thiosulfate, Allyl thiocarbamide, thiourea, thiosulfate, thioether and cystine; reduction sensitizers such as tin chloride, phenylhydrazine and reductone. Sensitizers and the like can be mentioned. Also, so-called selenium sensitization is possible.

Further, the negative emulsion used in the present invention is gold sensitized (for example, US Pat. No. 2,540,085).
No. 2,399,083). Specific gold sensitizers include potassium chloroaurate, aurasthiosulfate and potassium chloroparadate. These gold compounds may be added before or after the sulfur sensitizer. It can also be added at the same time as the sulfur sensitizer. The amount of the gold sensitizer used in the present invention is 10 per mol of silver halide.
^It is preferably used in the proportion of ^-7 to 10 ^-3 mol, and further 1
It is particularly preferable to use it in a ratio of 0 ^-6 to 10 ^-4 mol.

The sensitizing dye used in the medical image recording film according to the present invention used in a laser imager may be any of infrared, panchromatic, ortho and regular. Among them, since He-Ne lasers and semiconductor lasers are often used, panchromatic and infrared sensitizing dyes are often used. It is preferable to use a cubic type as the silver halide grain shape.

In order to provide both He-Ne laser (633 nm) and semiconductor laser (780 nm) with appropriate sensitivity, it is preferable to use a panchromatic sensitizing dye and an infrared sensitizing dye together. Further, it is preferable to use two types of panchromatic sensitizing dyes in order to provide both He-Ne laser (633 nm) and semiconductor laser (678 nm) with appropriate sensitivity. Examples of the infrared spectral sensitizer in the present invention include those disclosed in JP-A-63-
At least one tricarbocyanine dye and / or 4-quinoline nucleus-containing dicarbocyanine dye as described in US Pat. No. 89838 can be used. Further, JP-A-59-192242 and JP-A-59-19103.
The one described in No. 2 is used. As panchromatic sensitizing dyes, Japanese Examined Patent Publication Nos. 43-4933 and 60-454.
The one described in No. 14 is used.

The above-mentioned spectral sensitizing dye used in the negative type silver halide emulsion of the present invention contains 10 per mol of silver halide.
It is contained in the silver halide photographic emulsion at a ratio of ^-7 to 10 ^-2 mol, preferably 10 ^-6 to 10 ^-3 mol. Furthermore,
Other sensitizing dyes can also be used in the present invention. For example, US Pat. Nos. 3,703,377 and 2,682
No. 8,545, No. 3,397,060, No. 3,6
15,635, 3,628,964, British Patents 1,242,588, 1,293,862,
Japanese Examined Patent Publication Nos. 43-4936, 44-14030, and 4
3-10773, U.S. Pat. No. 3,416,927,
JP-B-43-4930, U.S. Pat. No. 3,615,61
No. 3, No. 3,615, 632, No. 3,617, 2
The spectral sensitizing dyes described in No. 95, No. 3,635, 721 and the like may be used, and the above infrared sensitizing dye and these spectral sensitizing dyes may be used in combination.

In the present invention, the compounds described in JP-A-63-89838 can be used together with the above-mentioned sensitizing dye for the purpose of further enhancing the supersensitizing effect. Furthermore, together with the above-mentioned sensitizing dye, JP-A-63-89838
A combination of storability improvers as described in US Pat. No. 4,096,839 may be used in an amount of about 0.01 to 5 g per mol of silver halide in the emulsion.

The photographic light-sensitive material of the present invention has a manufacturing process,
Various compounds can be added in order to prevent sensitivity deterioration and fog generation during storage or processing. These compounds include nitrobenzene imidazole, ammonium chloroplatinate, 4-hydroxy-6-methyl-
1,3,3a, 7-tetrazaindene, 1-phenyl-
An extremely large number of compounds such as 5-mercaptotetrazole, many heterocyclic compounds, mercury-containing compounds, mercapto compounds and metal salts have long been known. An example of a compound that can be used is "The Theory of the" by CEK Mees.
Photographic Process ”(3rd
Ed., 1966) pp. 344-349 with reference to the original literature. For example, US Pat. No. 2,131,038
No. 2,694,716 and other thiazolium salts; US Pat. Nos. 2,886,437 and 2,444,605, and other azaindenes; US Pat. No. 3 , 287,135, etc .; sulfocatechols, described in US Pat. No. 3,236,652; oximes, described in British Patent No. 623,448; US Pat. Nos. 2,403,927 and 3,266,89
No. 7, 3,397,987, etc., mercaptotetrazole compounds, nitrones, nitroindazoles; US Pat. No. 2,839,405, etc., polyvalent metal salts Thiuronium salts described in US Pat. No. 3,220,839; US Pat. No. 2,56
Salts of palladium, platinum and gold described in No. 6,263, No. 2,597,915 and the like.

The silver halide crystal plane of the emulsion used in the present invention may be either a (100) plane or a (111) plane, but a (100) plane / (111) plane ratio is preferably 1 or more. The monodisperse silver halide emulsion grains having a (100) face / (111) face ratio of 1 or more can be prepared by various methods. The silver halide emulsion used in the present invention is (10
0) face / (111) face ratio is 1 or more, preferably 2 or more,
It is more preferable that the content of silver halide grains is 4% or more, preferably 50% by weight or more, more preferably 60% by weight or more, and particularly preferably 80% by weight or more. The inclusion of iridium ions is achieved by adding an aqueous solution iridium compound (eg, hexachloroiridium (III) acid salt or hexachloroiridium (IV) acid salt) in the form of an aqueous solution during the preparation of the silver halide emulsion. It may be added by being contained in the same aqueous solution as the halide for grain formation, addition before grain formation, addition during grain formation, or addition from after grain formation to washing with water, but preferred is This is an addition when forming particles. It is particularly preferable to embed it inside the particles. In the present invention, iridium ions are used in the preparation of an emulsion in an amount of from 10 ^-7 to 1 mol per mol of silver halide.
It is necessary to use 10 ⁻³ mol, but preferably 5 ×
It is 10 ^{−7 to} 5 × 10 ⁴ mol. The light-sensitive material according to the present invention may have the light-sensitive silver halide emulsion layer coated on one side of the support or on the screen.

The silver halide emulsion of the present invention may contain various other photographic additives generally used. As the stabilizer, for example, triazoles, azaindenes, quaternary benzothiazolium compounds, mercapto compounds, or water-soluble inorganic salts such as cadmium, cobalt, nickel, manganese, gold, thallium, and zinc may be contained. Further, as a hardener, for example, aldehydes such as formalin, glyoxal, mucochloric acid, S-triazines, epoxies, aziridine, vinyl sulfonic acid, etc., and as a coating aid, for example, saponin, sodium polyalkylene sulfonate, lauryl polyethylene glycol. Alternatively, oleyl monoether, amylated alkyl taurine, fluorine-containing compound and the like may be contained. Further, it is possible to contain a color coupler. In addition, a whitening agent, an ultraviolet absorber, an antiseptic, a matting agent, an antistatic agent, etc. can be added as required.

Further, the silver halide emulsion of the present invention may contain a dye, a so-called filter dye.
The filter dye may be separately applied to each layer of the emulsion, or may be separately applied to different layers such as an intermediate layer and a protective layer. Further, a plurality of dyes can be mixed and used. There is no particular limitation on the chemical structure of the dye, and oxonol dye, hemioxonol dye, merocyanine dye, cyanine dye, azo dye and the like can be used. Of course, it is also possible to take means for changing the color after the usual photographic processing. It is also useful to correct the silver tone by the color of the dye.

In the above-mentioned medical image recording film for laser imager according to the present invention, He--Ne is used.
Laser (633nm) and semiconductor laser (780n
In order to have both aptitude and m), the dye of the antihalation layer should be 633 nm together with the selection of the sensitizing dye described above.
And those having sufficient absorption at 780 nm, it is necessary to have a concentration of 0.4 or more at those wavelengths.
As the dye absorbing in the visible region, those described in JP-A-61-174540 are preferable. The antihalation dye-containing layer in the silver halide light-sensitive material of the present invention may be provided between the emulsion layer and the support or on the opposite side of the emulsion layer. A back layer opposite the emulsion layer, which broadens the range of dye selection, is preferable. The transmission density of the dye-containing layer at the wavelength of the exposure light source is 0.4 or more, preferably 0.45 or more, and particularly preferably 0.5 or more. The method of adding the dye includes aqueous solution addition, micelle dispersion addition, solid dispersion addition, etc., depending on its nature. A laser scanner using the photosensitive material according to the present invention is usually provided with a film leading edge detecting mechanism for obtaining an exposure start signal. In order to accurately start the exposure from a position in contact with the film end face portion, it is desirable that the film leading edge detection mechanism be provided immediately below the laser scanning portion. CR-LP41 manufactured by Fuji Photo Film Co., Ltd.
In a flat bed type scanner such as the 4th type, a mounting hole for a film leading edge detection sensor is provided on the opposite side of the laser beam scanning section, and only the film is conveyed over it. Therefore, the amount of reflection of laser light differs depending on the scanning position depending on the hole. If the antihalation of the film is not sufficient, it will appear as a trace at the time of image formation due to the difference in the reflection amount of laser light. The generation of this mark extends over the entire length of the film. In order to prevent this mark, a flat bed on the side opposite to the laser light source may be painted in a color that absorbs the wavelength of the laser light used for exposure. However, if such measures are taken, the cost will increase. Also, if scratches or the like are attached to the painted surface, the marks will appear again. Therefore, the transmission density of the antihalation dye layer is 0.4 or more, preferably 0.
It is 45 or more, particularly preferably 0.5 or more. When the surface opposite to the laser scanning portion is a metallic glossy surface, it cannot be said to be perfect unless the antihalation layer has a transmission density of 0.7 or more. When it is desired to pursue fine shadows such as medical image recording, it is preferable to have a transmission density of 0.7 or more. In addition to the above, there is also a scanner in which a film is fixed on a fixing plate that attracts the film, and then the whole plate is exposed while being conveyed. In this case, grooves and small holes for suction are provided on one surface of the fixing plate, and the traces of the holes appear as described above. In the case of a drum type scanner, since the film is wound around the drum and moves with the drum, traces due to the difference in the amount of laser light reflected due to dirt and scratches on the drum appear in spots and extend over the entire length of the film. There is no. However, in some medical images, minute spot-like shadows are used as diagnostic criteria, and they cannot be overlooked. Further, by sufficiently performing antihalation, it becomes easy to use a photoelectric switch which is inexpensive, highly accurate, and non-contact and which is desirable for film detection for position detection and tip detection of the film. If a photoelectric sensor is provided on the back surface side of the film containing the antihalation dye, the light energy of the photoelectric sensor is absorbed by the antihalation dye and the photosensitive emulsion is less exposed to light. The following compound examples can be given as specific examples of the antihalation dye of the light-sensitive material exposed with a light source of 360 nm to 700 nm.

[0053]

[Chemical formula 12]

As the antihalation dye and / or antiirradiation dye used in the present invention when the exposure light source is in the infrared region, a dye having substantial absorption at a long wavelength of 750 nm or more is used. Here, the antihalation dye is used in an intermediate layer, an undercoat layer, an antihalation layer, a back layer, an emulsion layer, etc., and the antiirradiation dye is used in an intermediate layer, etc. in addition to the emulsion layer. Further, these dyes are preferably used in an amount of 10 ^{−3 to 1} g / m ² , more preferably 10 ^{−3 to} 0.5 g / m ² . These dyes may be used alone or in combination of two or more. It is preferable that the infrared absorbing dye or the ultraviolet absorbing dye is left in the light-sensitive material so that the visible absorbing dye is not left as a residual color. Further, instead of the above-mentioned dyes, these dyes may be used in combination with other dyes. Examples of dyes used instead or in combination include pyrazolone oxonol dyes described in US Pat. No. 2,274,782, diarylazo dyes described in US Pat. No. 2,956,879, and US Pat. 3,423,207, styryl dyes and butanedienyl dyes described in US Pat. No. 3,384,487, merocyanine dyes described in US Pat. No. 2,527,583, US Pat. No. 3,486,897,
The merocyanine dye and oxonol dye described in U.S. Pat. Nos. 3,652,284 and 3,718,472, and the enaminohemioxonol dye described in U.S. Pat. No. 3,976,661 can be used. .. In addition, JP-A-61
The dyes described in No. 174540 can be mentioned.

There are no particular restrictions on the various additives and the like used in the photographic light-sensitive material of the present invention other than the above-mentioned ones.
You can use the ones described in the following applicable sections. Item This section 1) Silver halide emulsion and JP-A-2-68539, page 8, right lower column, line 6 from bottom, manufacturing method to page 10, upper right column, line 12, line 3-24537. Page 2, lower right column, line 10 to page 6, upper right column, line 1; page 10, upper left column, line 16 to page 11 lower left column, line 19; Japanese Patent Application No. 2-225637. 2) Chemical sensitization method JP-A-2-68539, page 10, upper right column, line 13 to upper left column, line 16; Japanese Patent Application No. 3-105035. 3) Antifoggants and Stabilizers JP-A-2-68539, page 10, lower left column, line 17 to page 11, upper left column, line 7 and page 3, lower left column, line 2 to page 4, lower left column .. 4) Color tone improving agent JP-A-62-276539, page 2, lower left column, line 7 to page 10, left lower column, line 20; JP-A-3-94249, page 6, lower left column, line 15 to Page 11, upper right column 19, line 9. 5) Spectral sensitizing dye JP-A-2-68539, page 4, lower right column, line 4 to page 8, lower right column. 6) Surfactant JP-A-2-68539, page 11, upper left column, line 14 From antistatic agent to page 12, upper left column, line 9 7) Matting agent, slipping agent JP-A-2-68539, page 12, upper left column, line 10 From plasticizer, same upper right column, line 10; page 14, lower left column, line 10 to lower right column, line 1;

8) Hydrophilic Colloid JP-A-2-68539, page 12, upper right column, line 11 to left lower column, line 16 9) Hardener JP-A-2-68539, page 12, lower left column, line 17 to page 13, upper right column, line 6 10) Support, JP-A-2-68539, page 13, upper right column, lines 7 to 20. 11) Crossover JP-A-2-264944, page 4, upper right column, line 20: Cut method to page 14, upper right column. 12) Dyes and mordants JP-A-2-68539, page 13, lower left column, line 1 to page 14, lower left column, line 9 No. 3-24537, page 14, lower left column, to page 16, lower right column. 13) Polyhydroxy JP-A-3-39948, page 11, upper left column to the same, benzenes, page 12, lower left column, EP Patent No. 452772A. 14) Layer structure JP-A-3-198041. 15) Development processing method From JP-A-2-103037, page 16, upper right column, line 7 to page 19, left lower column, line 15 and JP-A 2-11 5837, page 3, lower right column, line 5 Page 6, upper right, column 10, line 10.

Next, the flat bed type scanner in which the silver halide photographic light-sensitive material for laser exposure of the present invention is preferably used will be described in detail. FIG. 1 is a schematic view showing an embodiment of the laser recording apparatus of the present invention. The photosensitive material 10 is exposed to the laser beam 29 without being wound around the drum. In the present invention, all laser scanning recording devices that expose a photosensitive material in a state in which it is not wound around a drum are collectively referred to as a flat bed scanner. In FIG. 1, a laser light source 2 for emitting a laser beam 29 is provided above the light-sensitive material (on the emulsion surface side).
1 is arranged. A polygon mirror 26 which is rotated at a constant speed by a motor 25 is arranged at a position where the laser light 29 is reflected and the photosensitive material 10 is scanned.
On the optical paths of the laser light source 21 and the polygon mirror 26, a modulation device 22 and a beam expansion device 23 for sequentially carrying image information on the laser light 29 from the laser light source 21.
And a focusing lens 24. A beam shaping device 27 and a focusing lens 28 are arranged on the optical path between the polygon mirror 26 and the photosensitive material 10. A sensor 30 for detecting the tip of the photosensitive material 10 is arranged immediately below the scanning position of the laser beam.

A light-sensitive material 10 is formed by using such a device,
Image information was recorded. First, the tip of the photosensitive material 10 is detected by the tip detection sensor 30. Image recording by laser light is started by the sensor signal. While moving the photosensitive material 10 in the direction of the arrow Y for sub-scanning, the laser light 29 from the laser light source 21 is caused to carry image information (for example, a CT image) by the modulator 22, while the laser light 29 is carried by the polygon mirror 26. Image information was recorded on the photosensitive material 10 by performing main scanning in the X direction by. At this time,
The laser beam 29 was absorbed by the antihalation layer after exposing the photosensitive layer, was reflected by the device component on the lower side of the photosensitive material (the side opposite to the laser beam), and was again absorbed by the antihalation layer. If the transmission density of the antihalation layer is not sufficient, the difference in the laser light reflection amount under the photosensitive material cannot be absorbed by the antihalation layer of the photosensitive material 10 and the photosensitive layer is exposed. Occur. In FIG. 1, the polygon mirror is used for the main scanning scan (X direction), but the scanning may be performed by a method in which the mirror is supported by the supporting rod from the up and down direction based on the principle of the galvanometer. The photosensitive material is generally conveyed in the Y direction by directly conveying the photosensitive material with a roller, but the photosensitive material may be fixed on the stage and the stage may be moved. In FIG. 1, the exposure unit (21 to 28) including the laser light source 21 is fixed, but the photosensitive material may be fixed and the entire exposure unit (21 to 28) may be moved in the Y direction. A special example is US Pat.
9500 and SPIE Vol.1454 Beam Deflect
ion and Scanning Technologies (1991) / 257
The scanners described in .about.264 are also included. In this case, the photosensitive material and the scanner are both fixed and scanned by two mirrors in the X and Y directions.

The present invention will be described in more detail below with reference to Examples, but the present invention is not limited thereto.

[0060]

【Example】

Example 1 1. Preparation of silver halide emulsion (A). 40 g of gelatin was dissolved in 1 liter of water, and 3 g of potassium bromide and compound [I] were placed in a container heated at 55 ° C.

[0061]

[Chemical 13]

After adding 60 mg of the above solution, an aqueous solution 1 containing 200 g of silver nitrate while keeping the pAg value in the reaction vessel at 7.0.
2,000 ml and an aqueous solution of 140 g of potassium bromide (140 g) containing potassium hexachloroiridium (III) at a molar ratio of 10 ^-7 to 1080 ml were added by the double jet method to give a cubic monodisperse bromide having an average particle size of 0.20 μm. Silver particles were prepared. 71 g of gelatin after desalting this emulsion
PH of 6.0, pAg of 8.5, sodium thiosulfate 3 mg, chloroauric acid 4 mg and 4-hydroxy-6-.
Methyl-1,3,3a, 7-tetrazaindene 0.2 g
To give an emulsion (A) chemically sensitized at 60 ° C.

2. Preparation of Emulsion Coating Solution A container in which 850 g of Emulsion A was weighed was heated to 40 ° C., and additives were added by the method described below to prepare an emulsion coating solution.

(Emulsion Coating Solution Formulation A) a. Emulsion (A) 850 g b. Spectral sensitizing dye [II] 1.2 × 10 ⁻⁴ mol c. Supersensitizer [XVI] 0.8 × 10 ⁻³ mol d. Shelf life improving agent [VI] 1 × 10 ⁻³ Morpho. Polyacrylamide (molecular weight 40,000) 7.5 g f. Trimethylolpropane 1.6 g. Polystyrene sulfonate Na 2.4 g h. Poly (ethyl acrylate / methacrylic acid) latex 16 g Re. N, N'-ethylenebis- (vinyl sulfone acetamide) 1.2 g

[0065]

[Chemical 14]

3. Preparation of Dye Emulsion Dispersion As an antihalation dye for infrared semiconductor laser light, Compound 8 described in JP-A-2-2074, page 4
As a dye for adjusting color tone, and is disclosed in JP-A-3-231738.
Dye No. 4 described on page 3 of the publication was weighed in an amount of 10 kg, and individually dissolved in a solvent consisting of 12 liters of tricresyl phosphate and 85 liters of ethyl acetate at 55 ° C. This is called an oil-based solution. On the other hand, 9.3% of 1.35 kg of anionic surfactant (W-1 below)
It was dissolved in 270 ml of gelatin aqueous solution at 45 ° C. This is called an aqueous solution. Put the above oil-based and water-based solutions in the dispersion kettle and control the liquid temperature to 40 ° C,
While rotating the high-speed rotating propeller 1 for dispersion in the dispersion tank at 6500 times / minute, the atmospheric pressure in the dispersion tank was gradually reduced from 760 mmHg to 100 mmHg over 60 minutes, and then the dispersion was continued under the same conditions for 20 minutes. Add the following additive (a) and phenoxyethanol in methanol 3 to the obtained dispersion.
After adding 1.2 liter of 5% solution and water to make 240 kg, it was cooled and solidified. (A) 8g

[0067]

[Chemical 15]

The area average particle diameters of the obtained dispersions were all in the range of 0.08 to 0.10 μm. The obtained emulsified dispersions are referred to as (antihalation dye emulsified dispersion) AH-8 and (color tone adjusting dye emulsified dispersion) S-6, respectively.

4. Preparation of Back Layer Coating Liquid A container was heated to 40 ° C., and additives were added according to the formulation shown below to prepare a back layer coating liquid. (Prescription of back layer coating solution containing antihalation dye (1) to (5)) b. Gelatin 80 g b. Emulsion dispersion of antihalation dye AH-8 (1) (2) (3) (4) (5) 18g 24g 27g 30g 42g c. Color tone adjusting dye emulsion dispersion S-6 1.0 g d. Polystyrene sodium sulfonate 0.6 g E. Poly (ethyl acrylate / methacrylic acid) latex 15 g f. N, N'-ethylenebis- (vinyl sulfone acetamide) 5.0 g

(Back Layer Coating Liquid Formulation (6)) 18 g of the antihalation dye emulsion of the back layer coating liquid formulation (1) was changed to 0.8 g of the dye [AHS-101]. (Back Layer Coating Liquid Formulations (7) to (11)) The back layer coating liquid formulations (1) to (5) were obtained by removing the color tone adjusting dye emulsion dispersion S-6. (Back layer coating liquid formulation (12) to (20)) Back layer coating liquid formulation a. Gelatin 80 g b. Antihalation dye emulsified dispersion AH-8 (12) (13) (14) (15) (16) (17) (18) (19) (20) 12g 18g 60g 60g 48g 0g 6g 60g 6g c. Color adjustment dye emulsion dispersion S-6 (12) (13) (14) (15) (16) (17) (18) (19) (20) 0g 4g 0g 2.4g 1g 0g 0g 5.3g 1.7g d. Dye [AHS-101] (12) (13) (14) (15) (16) (17) (18) (19) (20) 0.4g 0.2g 0g 0g 0.4g 2g 0.6g 0g 0.4g E. Polystyrene sodium sulfonate 0.6 g f. Poly (ethyl acrylate / methacrylic acid) latex 15 g. N, N'-ethylenebis- (vinyl sulfone acetamide) 5.0 g

[0071]

[Chemical 16]

5. Preparation of Back Surface Protective Layer Coating Liquid A container was heated to 40 ° C., and additives were added in the following formulation to prepare a coating liquid.

(Prescription of Coating Solution for Back Surface Protective Layer) a. Gelatin 80 g c. Polystyrene sodium sulfonate 0.3 g d. N, N'-ethylenebis- (vinyl sulfone acetamide) 1.7 g e. Polymethylmethacrylate fine particles (average particle size 4.0 μm) 4 g f. sodium t-octylphenoxyethoxyethane sulfonate 3.6 g g. NaOH (1N) 6 ml Chi. Sodium polyacrylate 2 g Re. _{C 16 H 33 O- (CH 2} CH 2 O) 10 -H 3.6g j. C ₈ F ₁₇ SO ₃ K 50 mg Ru. C ₈ F ₁₇ SO ₂ N (C ₃ H ₇ ) (CH ₂ CH ₂ O) ₄ (CH ₂ ) _4- SO ₃ Na 50 mg. 130 ml of methanol

6. Preparation of coating sample Along with the back layer coating liquids (1) to (20) described above together with the back layer surface protective layer coating liquid of 1 g / m ² , the total coating amount of gelatin was 3.5 g / m on the side of the transparent polyethylene terephthalate support. ^It was applied so as to be ² . Following this, the emulsion coating solution and the surface protective layer coating solution described above were applied to the opposite side of the support at a coating Ag amount of 2.5 g / m ² and a gelatin coating amount of the surface protective layer of 1 g / m ^2.
The m ² coated samples (1) to (20) were prepared as follows. The amount of the hardener N, N'-ethylenebis- (vinylsulfoneacetamide) was adjusted to 2.6% with respect to the total amount of gelatin. The transmission density of the back layer and base combined is Hitachi.
It was measured with a spectral absorption measuring instrument U-3210 manufactured by the same company without reference.

7. Sensitometry Method Samples (1) to (20) thus prepared were applied at 25 ° C. and 60% RH temperature and humidity for 7 days, then 25.7 × 36.4 cm 2.
Cut to size. FC of each sample manufactured by Fuji Photo Film Co., Ltd.
Exposure was performed using a 780 nm infrared semiconductor laser scanner (CR-LP414 type) for R7000. The automatic development process was performed by replacing the gear head of the CR-LP414 type self-developing part and doubling the conveying speed. If the anti-halation of the film is not enough, the CR-LP414 type laser scanner is a flat bed type scanner, and there is a sensor window in the scanning part (laser exposure part), and the trace of the sensor window is drawn on the film by the reflected light of the laser beam. Failure occurs. About the residual color of the film, the washing water temperature is 5 ℃
At 32 ° C.

The sharpness was evaluated by an imagewise exposure process in which an SMPTE chart was input from a pattern generator connected to a CR-LP414 type. The evaluation results are shown in Tables 1 and 2 below.

[0077]

[Table 1]

[0078]

[Table 2]

[Brief description of drawings]

FIG. 1 is a schematic view of a flat head type scanner preferably used in the present invention.

[Explanation of symbols]

 10 Silver Halide Photosensitive Material 20 Laser Recording Device 21 Laser Light Source 22 Modulator 23 Beam Expander 24, 28 Focusing Lens 25 Motor 26 Polygon Mirror 27 Beam Shaping Device 29 Laser Light 30 Tip Detection Sensor

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[Procedure amendment]

[Submission date] June 10, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

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[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction content]

Any laser light source may be used for exposing the light-sensitive material of the present invention. For example, ion gas lasers such as argon and krypton, metal vapor lasers such as copper, gold, sodium, barium and cadmium, solid state lasers such as ruby and YAG, excimer lasers, H
Examples include an e-Ne laser, an argon laser, and a semiconductor laser such as gallium-arsenide. Particularly preferred are red-emitting semiconductor lasers and infrared-emitting semiconductor lasers. Small size, low cost, stability, reliability,
It excels in durability and ease of modulation. Then H
An e-Ne laser and an argon laser are preferable. Among them, GaAs of 780 nm is highly stable when temperature changes, and circuit design and optical system design are easy and low cost.
A junction type semiconductor laser is particularly preferable.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0037

[Correction method] Change

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When the antihalation dye remaining in the light-sensitive material is used for adjusting the color tone, a preferred dye is a hydrophobic dye having an absorption maximum in the visible range of human being (400 to 700 nm) of 570 to 700 nm. And, for example, anthraquinone type, azo type, azomethine type,
A compound having a desired maximum value can be selected from indoaniline type, oxonol type, triphenylmethane type, carbocyanine type, styryl type and the like. These dyes can be used in the photographic light-sensitive material constituting layer in the form of a dispersion prepared by dispersing the dye in the form of a high boiling solvent and / or a low boiling solvent separately or in admixture with the above antihalation dye. Further, when it is contained in the support, appropriate means such as kneading can be taken. As a result, the residual color, which was conventionally disliked, was positively utilized to overcome the bleaching problem of the antihalation dye, which was limited in its speed because of the diffusion rate control. The visual density of the dye is n, which is a value measured using a visual filter with a Macbeth TD-904 type densitometer in the case of a light-sensitive material for image observation by transmission.
= Average value of 5. In the case of a light-sensitive material for observing an image by reflection, it is an average value of n = 5 of values measured by a Macbeth RD-917 type densitometer using a visual filter. Macbeth TD-904 and TD-91 used
It is preferable that 7 is modified so that the density display function can be digitally displayed up to 3 digits after the decimal point. Further, in the case of measuring the transmission density, it is preferable to use the value obtained by dividing the value obtained by measuring the density of five measurement samples that are superposed on each other by 5. In the present invention, examples of specific compounds of the dye used for such purpose include JP-A-3-
Compound No. 3 described on pages 3 to 7 of Japanese Patent No. 231738. 1-No. 36 and No. 36. 37-No. 56. The human visible range is described in Hiroshi Kubota et al., Optical Technology Handbook, Asakura Shoten, 1968, p.

[Procedure amendment 4]

[Document name to be amended] Statement

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[Correction method] Change

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7. Method of sensitometry Samples (1) to (20) prepared in this manner were treated at 25 ° C. and 60%.
After application at RH temperature and humidity for 7 days, 25.7 x 3
It was cut to a size of 6.4 cm. Each sample was exposed with a 780 nm infrared semiconductor laser scanner (CR-LP414 type) for FCR7000 manufactured by Fuji Photo Film Co., Ltd. The automatic development process was performed by replacing the gear head of the CR-LP414 type self-developing part and doubling the conveying speed. CR-L
The P414 type double speed modified machine is the time from the moment when the tip of the sensitive material is inserted into the automatic developing machine to the moment when it is processed and the tip comes out of the automatic developing machine (so-called "Dry to Dr.
y ”) is 33.4 seconds. The detailed specifications of the modified machine are shown below: Insertion 1.1 (seconds) Current image in liquid 5.45 (seconds) Outside liquid 1.7 (seconds) During landing 5.2 (sec) Outside the liquid 2.4 (sec) Washing with water 4.6 (sec) Squeeze 2.35 (sec) Drying 10.6 (sec) Total 33.4 (sec) Developer, The fixer is a commercially available C from Fuji Photo Film Co., Ltd.
Water was added to each of the developer and fixer of the E-DF-1 kit so as to have a volume of 15 liters, and then 300 ml of Fuji RD-III Starter manufactured by Fuji Photo Film Co., Ltd., which is commercially available, is used only as the developer. Was used. The developer temperature is 35 ° C ± 0.2 ° C, and the fixing temperature is 32 ° C ± 0.
Adjusted to 2 ° C. If the anti-halation of the film is not enough, the CR-LP414 type laser scanner is a flat bed type scanner, and there is a sensor window in the scanning part (laser exposure part), and the trace of the sensor window is drawn on the film by the reflected light of the laser beam. Failure occurs.
The residual color of the film was compared at the washing water temperature of 5 ° C and 32 ° C.

[Procedure Amendment 5]

[Document name to be amended] Statement

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[0077]

[Table 1]

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[0078]

[Table 2] ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 24, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction content]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-sensitive material for a laser light source, and more particularly to a silver halide photographic light-sensitive material for a laser light source and an image forming method which are excellent in high-speed processing in automatic development processing.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

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[0002]

2. Description of the Related Art In recent years, medical image diagnostic apparatuses have been on the increase with the progress of computer technology. As a result, the number of hard copies as a diagnostic record is remarkably increased, and for this reason, it is strongly desired to speed up and downsize the imager. In particular, the speedup of the laser imager integrated with the automatic processor is because waiting time is generated even if the exposure speed of the imager is increased unless the speed of automatic development processing of the photosensitive material used is increased. High-speed processability of the light-sensitive material has been strongly desired. Conventionally, when the processing speed of automatic development processing was increased, it was discolored by elution from the photosensitive material into the processing solution, decomposition due to changes in hydrogen ion concentration, reduction by sulfite ions, etc., during development, fixing and washing with water. There is a problem that a strong residual color is generated because the treatment is completed before the reactions of the antihalation dye sufficiently proceed. Further, these reactions are more likely to proceed as the washing water temperature is higher. Therefore, even if the unevenness is not recognized, the residual color level may change due to the different washing water temperatures depending on the season. It is common in Japanese hospitals that the temperature of washing water is 5 to 6 degrees Celsius in winter and exceeds 30 degrees Celsius in summer. For medical images, it is often compared with images taken several months ago for the purpose of follow-up observation, and it is not preferable that the color of the image changes depending on the season. For these measures, maintaining the washing temperature at a constant temperature is not practical because energy loss increases and a space for installing a device for maintaining the constant temperature is required. In order to accelerate these reactions, introduction of a water-soluble group such as a sulfonic acid group or a carboxylic acid group into the dye was devised and disclosed in JP-A-62-123454. However, the increase in processing speed is remarkable especially in the light-sensitive material for laser light source, and there is a limit in dealing with these. Also, the antihalation dye selected was limited. The decolorized antihalation dye is colored again by a side reaction such as oxidation. As a result, the wash water is colored, the rollers of the automatic processor are contaminated, and the antihalation dye concentrated (recolored) from the wash water by the squeeze roller is transferred to the photosensitive material to be processed. There was a problem such as doing. This failure due to the restored antihalation dye is likely to occur when the replenishment of the developing solution or the fixing solution is reduced, so that it is difficult to reduce the waste solution of the developing solution or the fixing solution.

[Procedure 3]

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[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a silver halide photographic light-sensitive material for a laser light source, which is excellent in suitability for speeding up automatic development processing while solving the above problems. Further, it is to actively utilize a hydrophobic dye which has been rarely used as an antihalation dye.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

If the elution of the dye is carried out uniformly over the whole, even if it remains as a residual color, it can be accepted without any problem at the time of observation. There are few colors, and the residual color at the center and at the rear end is strong, which tends to cause unevenness. The residual color unevenness is visually recognized when the variation of the average visual density is 0.02 or more. In the automatic development processing so as not to be visually recognized as unevenness, the fluctuation of the average visual density needs to be 0.02 or less except the support density and the emulsion fog density. The present inventors have found that the residual color unevenness is improved by suppressing the elution property of the antihalation dye, which was conventionally eluted by introducing a water-soluble group, contrary to the conventional case. It was also found that the residual color change due to the washing water temperature was small. In particular, it has been found that dyes that are insoluble or sparingly soluble in water give favorable results. The residual color unevenness is less noticeable as the absorption of the dye in the visible region is smaller, and therefore, it is preferable that the absorption of the antihalation dye in the visible region is small. Then
The antihalation dye absorbs as little as possible in the wavelength range of the specific light that is transmitted, absorbs as much as possible in the absorption wavelength range, and has a sharp change in the absorption wavelength and the transmission wavelength. It is preferable because of high color purity. Above all, for observation of medical image records, a blue one is preferred because it prevents the eyestrain of a diagnostician. Therefore, it is beneficial for the background color of the image to be blue. Therefore, the antihalation dye has a sufficient spectral absorption density of 0.4 or more for the laser light used and has little absorption for visible absorption, or it is useful for observation even if residual color remains. Is desirable. In particular, a dye having absorption for an infrared-emitting semiconductor laser is preferable because the residual color is pale blue. The water-soluble antihalation dye, which has been widely used in the past, does not cause uneven residual color if a small amount is used. Therefore, a water-insoluble or sparingly soluble antihalation dye and a water-soluble antihalation dye can be used in combination.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0054

[Correction method] Change

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As the antihalation dye and / or antiirradiation dye used in the present invention when the exposure light source is in the infrared region, a dye having substantial absorption at a long wavelength of 750 nm or more is used. Here, the antihalation dye is used in an intermediate layer, an undercoat layer, an antihalation layer, a back layer, an emulsion layer, etc., and the antiirradiation dye is used in an intermediate layer, etc. in addition to the emulsion layer. Further, these dyes are preferably used in an amount of 10 ^{−3 to 1} g / m ² , more preferably 10 ^{−3 to} 0.5 g / m ² . These dyes may be used alone or in combination of two or more. In the case of dealing with two or more kinds of laser beams, it is preferable that the infrared absorbing dye or the ultraviolet absorbing dye is left in the light-sensitive material and the visible absorbing dye is not left as a residual color. Further, instead of the above-mentioned dyes, these dyes may be used in combination with other dyes. Examples of dyes used instead or in combination include, for example, US Pat. No. 2,274,274.
Pyrazolone oxonol dyes described in US Pat. No. 782, diarylazo dyes described in US Pat. No. 2,956,879, US Pat. Nos. 3,423,207, and 3,38.
4,487, styryl dyes and butanedienyl dyes, US Pat. No. 2,527,583, merocyanine dyes, US Pat.
652,284 and 3,718,472, merocyanine dyes and oxonol dyes, US Pat.
The enaminohemioxonol dyes described in No. 976,661 can be used. In addition, JP-A-61-174
The dyes described in No. 540 can be mentioned.

[Procedure Amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0058

[Correction method] Change

[Correction content]

A light-sensitive material 10 is formed by using such a device,
Image information was recorded. First, the tip of the photosensitive material 10 is detected by the tip detection sensor 30. Image recording by laser light is started by the sensor signal. While moving the photosensitive material 10 in the direction of the arrow Y for sub-scanning, the laser light 29 from the laser light source 21 is caused to carry image information (for example, a CT image) by the modulator 22, while the laser light 29 is carried by the polygon mirror 26. Image information was recorded on the photosensitive material 10 by performing main scanning in the X direction by. At this time,
The laser beam 29 was absorbed by the antihalation layer after exposing the photosensitive layer, was reflected by the device component on the lower side of the photosensitive material (the side opposite to the laser beam), and was again absorbed by the antihalation layer. If the transmission density of the antihalation layer is not sufficient, the difference in the laser light reflection amount under the photosensitive material cannot be absorbed by the antihalation layer of the photosensitive material 10 and the photosensitive layer is exposed. Occur. In FIG. 1, the polygon mirror is used for the main scanning scan (X direction), but the scanning may be performed by a method in which the mirror is supported by the supporting rod from the up and down direction based on the principle of the galvanometer. The photosensitive material is generally conveyed in the Y direction by directly conveying the photosensitive material with a roller, but the photosensitive material may be fixed on the stage and the stage may be moved. In FIG. 1, the exposure unit (21 to 28) including the laser light source 21 is fixed, but the photosensitive material may be fixed and the entire exposure unit (21 to 28) may be moved in the Y direction. A special example is US Pat.
9500 and SPIE Vol.1454 Beam Deflect
ion and Scanning Technologies (1991) / 257
The scanners described in .about.264 are also included. In this case, the photosensitive material and the scanner are both fixed and scanned by two mirrors in the X and Y directions. A detection sensor is required to properly set the photosensitive material in this fixing place. As described above, the antihalation dye is usually dissolved in the treatment liquid or the wash water while chemically changing due to the change of the hydrogen ion concentration or the sulfite ion in the developing process and the fixing process. The concentration of the eluted component in each processing solution becomes higher as the amount of each processing agent replenished per square meter of the light-sensitive material decreases. Further, when the amount of washing water decreases, the concentration of the antihalation dye and its reaction product in the washing water in the washing tank increases. The reaction product of the antihalation dye becomes colored again due to side reactions such as reaction with other components in the treatment agent and oxidation with oxygen. The reaction product soaks into the conveyance roller of the automatic processor and contaminates the roller. Also, after being taken out to the squeeze portion of the automatic developing machine together with the washing water contained in the photosensitive material or attached to the surface, it is concentrated by dry air on the squeeze roller and transferred to the photosensitive material to be processed next. Cause a problem. This problem is caused especially by the antihalation dye of the photosensitive material, which causes the replenishment amount of the developing solution and the fixing solution to be increased. Aggravated by the decrease of Reducing the content of the antihalation dye in the light-sensitive material in order to prevent these problems cannot eliminate the antihalation effect. The present invention is extremely effective in solving this conflicting problem. Here, it is preferable that the difference in spectral absorption density of the antihalation dye with respect to the laser wavelength before and after the development processing of the light-sensitive material is less than 0.4, particularly less than 0.2. It is particularly preferable that the laser imager and the automatic developing machine are connected to each other and integrated so that the light-sensitive material used in the laser imager can be processed without working in a dark room. At this time, the conveying speed of the laser imager main body and the automatic developing machine section are the same, or the conveying speed of the automatic developing machine is 110% to 100%.
It is preferably in the range of%. This is because when the speed of the automatic processor is slow, a special standby unit is needed between the scanner unit of the laser imager and the device becomes large, and when the speed of the automatic processor is high, the transportation including the ratchet mechanism is required. This is because it becomes necessary to provide a connecting part between the scanner part and the automatic part. A particularly preferable conveyance speed is in the range of 100 to 105% of the speed of the automatic developing machine with respect to the sub-scanning (Y direction) speed of the laser imager.
The sub-scanning speed of the laser imager can be relatively easily achieved by increasing the sensitivity of the light-sensitive material, but it is very difficult to improve the conveying speed of the automatic developing machine because of the above-mentioned problems. According to the present invention, the transport speed of the automatic moving section is improved, and the speed of the laser imager integrated with the automatic processor is achieved. As an effect of the present invention, the prevention of "back dye transfer unevenness" is further enhanced. As mentioned above, the antihalation dye is particularly preferably added to the backing layer. In addition, in the silver halide photographic light-sensitive material for a laser light source according to the present invention, when supplying the light-sensitive material to the laser imager, a plurality of light-sensitive materials are used so that the loading operation can be easily performed under bright room light. It is preferable that the light-sensitive materials are laminated, wrapped with a protective cutout having a part notched so that the light-sensitive material can be taken out by a laser imager by a simple method such as a suction cup, and the whole is wrapped with a bag-shaped flexible light-shielding member. However, when a plurality of light-sensitive materials are laminated, the backing layer and the emulsion layer are laminated so that they are in contact with each other, and thus the antihalation dye added to the backing layer during storage is in contact with the backing layer. It is known that diffusion transfer is carried out to cause desensitization unevenness. This failure depends on the pressure applied to the laminate, the storage temperature and humidity, and the storage time. Here, the storage temperature and humidity are the temperature and humidity inside the package before the package is opened and the environmental temperature and humidity after the package is opened. Details of these packaging forms are described in, for example, JP-A-63 / 1988.
-223747 or U.S. Pat. No. 4,915,229. To prevent back dye transfer unevenness,
To reduce the internal humidity of the bag made of flexible light-shielding member,
It is common practice to reduce the humidity in the bag packing process and to put a desiccant in the bag. However, there are problems such as increased failures due to static electricity in the process and failures such as clogging of desiccant inside the laser imager. In addition, it was not possible to prevent failure occurrence after opening. Further, in order to prevent the occurrence of scratches due to vibration during transportation, it is preferable to reduce the atmospheric pressure in the light-shielding bag (for example, vacuum packing) so that the photosensitive material does not move inside the bag. Then, the pressure applied to the photosensitive material laminate increases due to the atmospheric pressure, and the "back dye transfer unevenness" failure is exacerbated. By carrying out the present invention, it was possible to easily prevent the occurrence of "back dye transfer unevenness" failure.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0073

[Correction method] Change

[Correction content]

(Prescription of Coating Solution for Back Surface Protective Layer) a. Gelatin 80 g c. Polystyrene sodium sulfonate 0.3 g d. N, N'-ethylenebis- (vinyl sulfone acetamide) 1.7 g e. Polymethylmethacrylate fine particles (average particle size 4.0 μm) 4 g f. sodium t-octylphenoxyethoxyethane sulfonate 3.6 g g. NaOH (1N) 6 ml Chi. Sodium polyacrylate 2 g Re. _{C 16 H 33 O- (CH 2} CH 2 O) 10 -H 3.6g j. C ₈ F ₁₇ SO ₃ K 50 mg Ru. C ₈ F ₁₇ SO ₂ N (C ₃ H ₇ ) (CH ₂ CH ₂ O) ₄ (CH ₂ ) _4- SO ₃ Na 50 mg. Methanol 130 ml 6. Preparation of coating sample Along with the back layer coating liquids (1) to (20) described above together with the back layer surface protective layer coating liquid of 1 g / m ² , the total coating amount of gelatin was 3.5 g / m on the side of the transparent polyethylene terephthalate support. ^It was applied so as to be ² . Following this, the emulsion coating solution and the surface protective layer coating solution described above were applied to the opposite side of the support at a coating Ag amount of 2.5 g / m ² and a gelatin coating amount of the surface protective layer of 1 g / m ^2.
The m ² coated samples (1) to (20) were prepared as follows. The amount of the hardener N, N'-ethylenebis- (vinylsulfoneacetamide) was adjusted to 2.6% with respect to the total amount of gelatin. The transmission density of the back layer and base combined is Hitachi.
It was measured with a spectral absorption measuring instrument U-3210 manufactured by the same company without reference.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0074

[Correction method] Change

[Correction content]

7. Sensitometry Method Samples (1) to (20) thus prepared were applied at 25 ° C. and 60% RH temperature and humidity for 7 days, then 25.7 × 36.4 cm 2.
Cut to size. FC of each sample manufactured by Fuji Photo Film Co., Ltd.
Exposure was performed using a 780 nm infrared semiconductor laser scanner (CR-LP414 type) for R7000. The automatic development process was performed by replacing the gear head of the CR-LP414 type self-developing part and doubling the conveying speed. The CR-LP414 type double speed modified machine is the time from the moment the tip of the sensitive material is inserted into the automatic developing machine to the moment when it is processed and the tip comes out of the automatic developing machine (so-called "Top to Top"). Is 33.4 seconds.
The detailed specifications of the modified machine are shown below. Insertion 1.1 (seconds) Current image In liquid 5.45 (seconds) Outside liquid 1.7 (seconds) Settling in liquid 5.2 (seconds) Outside liquid 2.4 (seconds) Washing with water 4.6 ( Second) Squeeze 2.35 (second) Dry 10.6 (second) Total 33.4 (second) Developing machine and fixer are commercially available C from Fuji Photo Film Co., Ltd.
Water was added to each of the developer and fixer of the E-DF-1 kit so as to have a volume of 15 liters, and only 300 ml of Fuji RD-III Starter commercially available from Fuji Photo Film Co., Ltd. was used as the developer only. Was used. Developer temperature is 35 ° C ± 0.2 ° C, fixing temperature is 32 ° C ± 0.2 ° C.
Adjusted to ° C. If the anti-halation of the film is not enough, the CR-LP414 type laser scanner is a flat bed type scanner and there is a sensor window in the scanning part (laser exposure part), and the trace of the sensor window is drawn on the film by the reflected light of the laser beam. Failure occurs.
The residual color of the film was compared at the washing water temperature of 5 ° C and 32 ° C. 8. Evaluation of failure in transfer of anti-halation dye drying section roller The failure in which the drying section roller is contaminated by the anti-halation dye and is transferred to the photosensitive material after the above prepared samples (1) to (20) are continuously processed under the following processing conditions A to G Was evaluated. Processing ABCDEFG Automatic machine CR-LP CR-LP CR-LP CR-LP414 CR-LP414 CR-LP414 CR-LP 414 414 414 2x 2x 2x 414 Developer RD-10 RD-10 RD-10 CED-1 CED-1 CED-1 RD-10 Amount of developer replenisher (mL / sensitizer 590 380 275 535 325 275 275 / square meter) Fixer RF-1O RF-1O RF-1O CEF-1 CEF-1 CEF-1 RF- 1O Fixer replenisher volume (mL / sensitive material 590 380 275 535 325 275 275 / square meter) Washing water volume 3.2 3.0 3.0 3.0 3.0 3.0 1.5 (liter / min) 9. Evaluation of "Back Dye Transfer Mottling" Failure After the above-mentioned sample was made into a laminate, it was stored under the following conditions I to C to evaluate the degree of occurrence of "Back dye transfer unevenness" failure. The sharpness was evaluated by an image-wise exposure treatment by inputting an SMPTE chart from a pattern generator connected to CR-LP414 type. The evaluation results are shown in Table 1 below.
And shown in Table 2.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0075

[Correction method] Change

[Correction content]

[0075]

[Table 1]

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0076

[Correction method] Change

[Correction content]

[0076]

[Table 2]

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0077

[Correction method] Change

[Correction content]

[0077]

[Table 3]

[Procedure Amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0078

[Correction method] Change

[Correction content]

[0078]

[Table 4]

Claims (4)

[Claims] 1. A silver halide photographic light-sensitive material for laser exposure having at least one silver halide emulsion layer on a support, which contains an antihalation dye in the support or in a photographic constituent layer, The spectral absorption of the antihalation dye is 0.4 or more before development, with respect to the wavelength used for exposure, and the average visual density variation after development is 0, excluding support density and emulsion fog density. A silver halide photographic light-sensitive material for laser exposure, wherein the antihalation dye has a spectral absorption of 0.2 or more with respect to the laser wavelength used when it is 0.02 or less. 2. The blue density of the unexposed area after the development processing, excluding the support density and the emulsion fog density, when the fluctuation of the average visual density is 0.02 or less is the average visual density except the support density. , 0.05-0.30, wherein the silver halide photographic light-sensitive material for laser exposure according to claim 1. 3. A hydrophobic dye having an absorption maximum of 570 to 700 nm is dissolved in an organic solvent which is sparingly soluble or insoluble in water, and then at least one layer containing an emulsion is emulsified and dispersed.
The silver halide photographic light-sensitive material for laser exposure according to claim 1, which has a layer. 4. A method for forming an image with a flat bed type laser scanner using the silver halide photographic light-sensitive material for laser exposure according to claim 1.