JPH05165165A - Image forming method for appreciation - Google Patents

Abstract

PURPOSE:To obtain the method for forming an image which can be directly appreciated by man and more particularly the image for appreciation having a natural contrast. CONSTITUTION:A means for predicting the Wiener spectra of the image to be formed and a means for obtaining the image of plural gradations are provided. The image is formed by comparing the average value of the inclination of the Wiener spectra of the predicted image at 0.5 to 2 cycles/mm space frequency and the set value and selecting one from the previously prepd. plural gradations of the image for appreciation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming an image that can be viewed directly by humans, and more particularly to a method for forming an image for viewing having natural contrast.

[0002]

BACKGROUND OF THE INVENTION Silver halide photographic light-sensitive materials are highly sensitive today, excellent in gradation, sharpness, graininess, color reproducibility and suitable for large-scale processing. It has been used in various forms and has entered the place of daily life in various forms. These features are not only improvements in silver halide color photographic light-sensitive materials, but also improved exposure control of printers, methods for determining exposure conditions, etc., and image exposure is performed under appropriate exposure conditions depending on the scene. It has contributed greatly. For example, in Japanese Patent Laid-Open No. 1-134353, a print original is photoelectrically scanned, and the measured light coming from each scanning range is divided into a large number of spectral ranges, and the spectral values are evaluated for spectral values corresponding to the spectral sensitivity curve of the print material. A method of obtaining a color component value by (weighting) and integration (addition) is disclosed. However, such a technique is only for setting the exposure amount to an appropriate value, and not for properly adjusting the gradation.

Regarding the method of determining the gradation to be a target, Japanese Patent Laid-Open No. 1-253366 discloses that a cumulative density distribution is created from a statistical density distribution of image data, and a specific processing procedure is selected based on the shape of the cumulative density distribution. , A method for determining the highlight density value and the shadow density value of an original image is disclosed. However, this method only discloses a method of appropriately determining the highlight density and the shadow density in order to reproduce the detailed image information of the original image, and forms an image having a contrast that looks natural to humans. It does not give any suggestion as to how to determine the conditions for doing so.

In the method of forming a color image for appreciation, by making the gradation harder, more vivid color reproduction is realized, so that rich gradation reproduction and vivid color reproduction are perfectly compatible. I couldn't do that. In the field of amateur photography, vivid color reproduction tends to be prioritized, and dissatisfaction with gradation reproduction has always been latent. Further, in a copying machine using a silver halide color photographic light-sensitive material, the cost of copying is high, and it has been desired that an optimum image can be obtained in good yield.

The inventors of the present invention predict the image formed in Japanese Patent Laid-Open No. 3-241341 in advance, obtain a histogram from the density values obtained by spatially dividing the image, and use one of the processing procedures prepared in advance. Select and perform a cumulative process with weighting considering the ability of human vision to discriminate colors,
We have proposed a method for forming a viewing image, which is characterized in that a gradation giving a large cumulative value is selected from a plurality of gradations of viewing images prepared in advance. As a result, it is possible to form an image with excellent details. However, this method is a method that emphasizes detail depiction, and its concept is different from that of the present invention that attempts to optimize the contrast itself of an image, and more importantly, both of them have a more appropriate gradation. It is possible to form an image having

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for forming an image that can be viewed directly by humans, and more specifically to provide a method for forming an viewing image having natural contrast. ..

[0007]

DETAILED DESCRIPTION OF THE INVENTION The inventors of the present invention have predicted the Wiener spectrum (hereinafter referred to as WS) of an image to be formed while researching the improvement of the image quality of a silver halide photographic light-sensitive material, particularly the improvement of the image quality visually. In the method for forming an image for viewing having a means for forming an image having a plurality of gradations, the image to be formed is predicted in advance, and the Wiener spectrum is obtained from the density value when the image is spatially divided. , Spatial frequency 0.
Select one of the gradations of multiple viewing images prepared in advance by comparing the average value of inclination at 5 to 2 cycles / mm with the set value and selecting the one that is close to the set value. It was found that this object can be achieved by an image forming method for viewing, which is characterized by forming an image, and completed the present invention.

The WS inclination referred to here is the log on the horizontal axis.
(Spatial frequency), the absolute value of the slope when log (WS intensity) is taken on the vertical axis.

In the image forming method according to the present invention, when the material for forming an image is a silver halide photographic light-sensitive material, its effect can be sufficiently exerted together with its excellent gradation depiction ability. Further, by selecting a compound having a large gradation depiction ability as a magenta image dye having a large visual effect, the effect can be sufficiently exhibited.

The image for viewing as referred to in the present invention means an image created for the purpose of directly being viewed by a human being, an image formed on a paper by a color copying machine, an image printed on a color photographic paper from a color negative, Using images recorded on color reversal film, images formed on color photographic paper by copying color photographs with a silver salt type color copier, digital image data recorded on media such as magnetic tapes and optical disks Images formed by outputting to a color reversal film or color photographic paper with a total scanner, images formed by outputting with a thermal transfer type printer using digital image data, etc. of various materials by various methods. Means the image recorded above.

When a silver halide photographic light-sensitive material is used as a medium for forming an image, a method of adjusting gradation is to give a weak uniform exposure to the entire surface before or after image exposure, that is, by so-called sub-exposure. It is known that the tone can be softened. Research Disclosure (Research Disclosure, abbreviated as RD) issued in November 1978.
175, 17533, and 182, 1827, published in June 1979.
According to item 6, a photographing screen consisting of a linear, mesh-shaped or dot-shaped light transmitting portion and a light non-transmitting portion (a portion having a high transmission density) is arranged on the front surface of the color print material on the exposure side, By applying image exposure to the color print material through the screen, print images of different gradations can be obtained, and screens with different density differences, area ratios, shapes, and spectral transmittance differences between the high density part and the low density part can be displayed. It is disclosed that the gradation of a color print can be arbitrarily changed by using it. Further, Japanese Patent Application Laid-Open No. 56-113127 discloses a filter in which the density difference and area ratio between the high density part and the low density part are variable.

Further, although it is not the gradation adjustment of the original meaning,
It is also practiced to prepare two kinds of silver halide color photographic light-sensitive materials having different gradations and to use these materials easily by operating a button by an operator. It is also possible to hold the image as digital data and adjust the gradation of the image obtained by converting the image data when outputting to a silver halide color photographic light-sensitive material using an image output device such as a total scanner. It is being appreciated. Any of these methods may be used, and the method may be selected depending on the property of the image.

When an image is output after gradation conversion into a color negative or the like and this is used as an inter negative, this step is considered to be a means for adjusting the gradation of the image for viewing.

The WS is measured by measuring the density of the silver halide photographic light-sensitive material to be measured using a microphotometer, for example, Konica Microdensitometer PDM5 type, and measuring the density according to J. C. Dainty, R.A. Shaw Co-authored, Image Science, Academic Press, New York (1974) Chapter 8 can be calculated by the method (JC Dainty and R. Shaw, Image Science, Academi
c Press, New York (1974)). In the case of digitized image data, the data can be calculated according to the above method. In the image forming method according to the present invention, it is necessary to predict the WS that the viewing image should have. For this purpose, for example, an image on a color negative is measured, the density distribution on the print is predicted from the relationship between the color negative density and the color print density optimally created from this, and based on this, the WS of the image formed on the color print is predicted. Should be predicted. In the case of a color image, the G density having the greatest influence on human vision may be calculated or the visual density may be calculated.

The image forming method according to the present invention is characterized in that, of the gradations of a plurality of images for viewing prepared in advance, one having a Wiener spectrum of the obtained image close to a specific value range is selected. To do. It is preferable to consider in advance characteristics such as color reproducibility and sharpness that are greatly affected when the gradation is changed, and to determine the gradation that is a possible candidate.

W at a spatial frequency of 0.5 to 2 cycles / mm
If the average value of the slope of S is 2.3 or more as an absolute value, a so-called sleepy image with low contrast is obtained, and if it is 0.5 or less, an image with too high contrast is apt to be produced. The preset value is preferably set in the range of 0.5 to 2.3. Although the preferable value of the inclination of WS varies depending on the type of the image, generally, the value of the inclination of WS is more preferably 0.7 to 2.3, and particularly preferably 1.3 to 2.0. The slope of WS here is on the horizontal axis.
The log (spatial frequency) can be obtained from a graph in which the vertical axis represents log (WS intensity).

An outline of the image forming method according to the present invention will be described by taking an example of printing an image recorded on a color negative film on a color paper.

The flow shown in FIG. 1 is as follows.

The density is read from the developed color negative using a scanner.

The density on the color negative is converted into the density on the print based on the relationship between the color negative and the print density with respect to the prepared gradation. This calculation is sequentially performed for the prepared gradation.

The WS of the print image is estimated based on the converted data.

A gradation is selected in which the average value of the inclination of WS at a spatial frequency of 0.5 to 2 cycles / mm is closer to the set value as an absolute value. The gradation adjusting mechanism is operated to print so as to realize the selected gradation.

The silver halide emulsion used in the silver halide photographic light-sensitive material of the present invention is silver iodobromide, silver bromide,
It may be any of silver chloride, silver chlorobromide and silver chloroiodobromide, and the ratio thereof may be any. Further, the silver halide grain according to the present invention may have a uniform composition, may have a portion which is epitaxially bonded to the silver halide emulsion grain of the host, or may be a so-called core / shell emulsion. It is also possible that only a region having a partially different composition is present without forming a complete layer. When there are parts having different compositions, the composition may change continuously or discontinuously. Examples of such silver halide grains include JP-A-58-95736.
No. 58-108533, and particles described in JP-A No. 1-183647.

Heavy metal ions may be contained in the silver halide emulsion according to the present invention. These heavy metal ions include iron, iridium, platinum, palladium, nickel, rhodium, osmium, ruthenium, cobalt and the like.
Examples thereof include group metals, group II transition metals such as cadmium, zinc, and mercury, and ions of lead, rhenium, molybdenum, tungsten, and chromium.

The silver halide grains according to the present invention may have any shape. One preferred example is
It is a cube having a (100) plane as a crystal surface. Also,
U.S. Pat.Nos. 4,183,756, 4,225,666, JP-A-55-26589,
Japanese Examined Japanese Patent Publication No. 55-42737 and The Journal of Photographic Science (J.Photogr.Sci.) 21, 39 (19
It is also possible to prepare particles having an octahedral shape, a tetradecahedral shape, a dodecahedron shape or the like by the method described in the literature such as 73) and use them. Further, grains having twin planes may be used. The silver halide grain according to the present invention may be a grain having a single shape, or may be a mixture of grains having various shapes.

The grain size of the silver halide grains according to the present invention is not particularly limited, but in view of various photographic properties such as rapid processing property and sensitivity, it is preferably 0.1 to 1.2 μm, more preferably 0.2. The range is up to 1.0 μm. This particle size can be measured using the projected area of the particle or a diameter approximation. If the particles are of substantially uniform shape, the particle size distribution can be fairly accurately expressed as a diameter or projected area. The grain size distribution of the silver halide grains according to the present invention may be polydisperse or monodisperse.

The silver halide emulsion according to the present invention may be chemically sensitized by a conventional method. As the chemical sensitization method, a sensitization method using a chalcogen sensitizer, a reduction sensitization method, a sensitization method using a gold compound, and a sensitization method combining these can be used.

The silver halide emulsion according to the present invention has the purpose of preventing fog that occurs during the process of preparing a silver halide photographic light-sensitive material, reducing performance fluctuations during storage, and preventing fog that occurs during development. Known antifoggants and stabilizers can be used. Examples of compounds that can be used for such purpose include compounds represented by the general formula (II) described in JP-A 2-146036, page 7, lower column, and specific compounds thereof include: (IIa-1) to (IIa-8) and (IIb-1) to
Compound of (IIb-7) and 1- (3-methoxyphenyl)
-5-Mercaptotetrazole and the like can be mentioned.

When the silver halide photographic light-sensitive material according to the present invention is used as a color photographic light-sensitive material, it was spectrally sensitized to a specific region in the wavelength range of 400 to 900 nm by combining it with a yellow coupler, a magenta coupler and a cyan coupler. It has a layer containing a silver halide emulsion. The silver halide emulsion contains one kind or a combination of two or more kinds of sensitizing dyes.

The coupler used in the silver halide photographic light-sensitive material according to the present invention forms a coupling product having a spectral absorption maximum wavelength in a wavelength region longer than 340 nm by a coupling reaction with an oxidant of a color developing agent. Although any compound that can be used can be used, as a particularly typical example, a yellow coupler having a spectral absorption maximum wavelength in a wavelength range of 350 to 500 nm, a magenta coupler having a spectral absorption maximum wavelength in a wavelength range of 500 to 600 nm, A typical one is known as a cyan coupler having a spectral absorption maximum wavelength in the wavelength region of 600 to 750 nm.

The effects of the present invention can be further enhanced by appropriately selecting the magenta coupler. As a magenta coupler useful in the silver halide color photographic light-sensitive material of the present invention, a coupler having a maximum color difference of 85 or more between the magenta color-developing portion and the minimum density portion is preferable. The color difference between the color-developed portion and the minimum-density portion as used herein means that after a photographic constituent layer containing a silver halide emulsion layer containing a magenta coupler is coated on a reflective support, it is determined by light having an appropriate spectral composition. It can be obtained by exposing and developing to obtain magenta color patches of various color densities and white samples, and measuring their spectral absorption. The spectral absorption is measured under the condition c of the geometric conditions of illumination and light reception described in JIS Z8722 (1982), and the tristimulus values X, Y and Z are also measured by the method described in JIS Z8722 (1982). Then, the value of each L * a * b * is calculated by the method described in JIS Z8729 (1980).
It is obtained by obtaining the color difference according to the method described in (1980).

As the magenta coupler which can be preferably used in the silver halide photographic light-sensitive material according to the present invention, a compound represented by the general formula (M-
The couplers represented by I) and can be mentioned. Specific compounds include those described as MC-1 to MC-7 on pages 13 to 16 of the same specification.

As the magenta coupler which is more preferably used, a coupler represented by the following general formula (MC) can be mentioned.

General formula (MC)

[0035]

[Chemical 1]

In the formula, Z represents a nonmetallic atom group necessary for forming a nitrogen-containing heterocycle, and the ring formed by Z may have a substituent.

X represents a hydrogen atom or a group capable of splitting off upon reaction with an oxidized product of a color developing agent.

R represents a hydrogen atom or a substituent. The substituent represented by R is not particularly limited, but typical examples thereof include alkyl, aryl, anilino, acylamino, sulfonamide, alkylthio, arylthio, alkenyl, and cycloalkyl groups. Atoms and cycloalkenyl, alkynyl, heterocycle, sulfonyl, sulfinyl, phosphonyl, acyl, carbamoyl, sulfamoyl, cyano, alkoxy, aryloxy, heterocycleoxy, siloxy, acyloxy, carbamoyloxy, amino, alkylamino, imide, ureido, sulphyl. Famoylamino, alkoxycarbonylamino, aryloxycarbonylamino, alkoxycarbonyl, arylcarbonyl, heterocyclic thio groups,
In addition, spiro compound residues, bridged hydrocarbon compound residues and the like are also included.

Most of the compounds represented by the general formula (MC) have a maximum color difference of 85 or more between the magenta colored portion and the minimum density portion, and are excellent in detail descriptive power. It is possible to show outstanding detail depiction with natural contrast, and is also excellent in the reproduction of colors from blue to purple to red, which is preferable.

The following compounds may be mentioned as specific examples of the compound represented by the general formula (MC).

[0041]

[Chemical 2]

[0042]

[Chemical 3]

Examples of yellow couplers which can be preferably used in the silver halide photographic light-sensitive material of the present invention include couplers represented by the general formula Y-I described on page 8 of Japanese Patent Application No. 2-234208. it can. Specific compounds include those described as YC-1 to YC-9 on pages 9 to 11 of the same specification. Among them, YC-8 and YC-9 described on page 11 of the same specification are preferable because they can reproduce a preferable yellow color.

Cyan couplers that can be preferably used in the silver halide photographic light-sensitive material of the present invention include:
Japanese Patent Application No. 2-234208, general formula C-described on page 17
Examples thereof include couplers represented by I and C-II.
Specific compounds include those described as CC-1 to CC-9 on pages 18 to 21 of the same specification.

When the oil-in-water type emulsion dispersion method is used to add the coupler used in the silver halide photographic light-sensitive material according to the present invention, it is usually used in a water-insoluble high-boiling point organic solvent having a boiling point of 150 ° C. or higher, If necessary, a low boiling point and / or a water-soluble organic solvent is also used in combination to dissolve, and a surfactant is emulsified and dispersed in a hydrophilic binder such as an aqueous gelatin solution. As a dispersing means, a stirrer, a homogenizer, a colloid mill, a flow jet mixer, an ultrasonic disperser or the like can be used. After the dispersion or at the same time as the dispersion, a step of removing the low boiling point organic solvent may be added. As the high boiling point organic solvent that can be used to dissolve and disperse the coupler, phthalic acid esters such as dioctyl phthalate and phosphoric acid esters such as tricresyl phosphate are preferably used.

In place of the method using a high-boiling point organic solvent, the coupler and a water-insoluble and organic solvent-soluble polymer compound are dissolved in a low-boiling point and / or water-soluble organic solvent, if necessary, to prepare a gelatin aqueous solution or the like. A method of emulsifying and dispersing by using various dispersing means using a surfactant in a hydrophilic binder can also be used. Examples of the water-insoluble organic solvent-soluble polymer used at this time include poly (Nt-butylacrylamide).

For the purpose of shifting the absorption wavelength of the color forming dye, the compound (d-11) described on page 33 of Japanese Patent Application No. 2-234208 and the compound (A'-1) described on page 35 of the specification. And other compounds can be used. Other than this, the fluorescent dye-releasing compounds described in US Pat. No. 4,774,187 can also be used.

In the silver halide photographic light-sensitive material of the present invention, dyes having absorption in various wavelength regions can be used for the purpose of preventing irradiation and halation.

In the silver halide photographic light-sensitive material of the present invention, it is advantageous to use gelatin as a binder, but if necessary, other gelatin, gelatin derivatives, graft polymers of gelatin and other polymers, gelatin. Other than the above, hydrophilic colloids such as proteins, sugar derivatives, cellulose derivatives, and synthetic hydrophilic polymer substances such as single or copolymers can also be used.

The reflection support according to the present invention is a paper support having a water resistant resin layer containing a white pigment on the surface thereof, and the resin forming the water resistant resin layer is a polyolefin such as polyethylene or polypropylene. Alternatively, a method of forming a water resistant resin layer by dispersing a white pigment in an acrylate-based monomer and curing it with an electron beam may be used. Among them, a paper support having a polyolefin layer containing a white pigment on its surface is preferable.

As the white pigment used in the reflective support according to the present invention, inorganic and / or organic white pigments can be used, and preferably inorganic white pigments are used. For example, alkaline earth metal sulfates such as barium sulfate, alkaline earth metal carbonates such as calcium carbonate, finely divided silicic acid, silicas such as synthetic silicates, calcium silicate, alumina, alumina hydrate, oxidation Examples include titanium, zinc oxide, talc, clay and the like. The white pigment is preferably barium sulfate or titanium oxide. In order to increase the dispersity, these white pigments are surface-treated with an inorganic compound such as silica or aluminum oxide or a polyhydric alcohol such as 2,4-dihydroxy-2-methylpentane or trimethylolethane. Is preferred.

The amount of white pigment contained in the reflective support according to the present invention is preferably 10% by weight or more, more preferably 13% by weight or more, as the density in the waterproof resin layer. Is preferred, and more preferably 15% by weight or more. The dispersity of the white pigment in the water resistant resin layer can be measured by the method described in JP-A-2-28640.

The degree of dispersion of the white pigment measured by this method is preferably 0.20 or less as a coefficient of variation, more preferably 0.15 or less, and further preferably 0.10 or less.

In the silver halide photographic light-sensitive material according to the present invention, the support surface is subjected to corona discharge, ultraviolet irradiation, flame treatment, etc., if necessary, and then directly or undercoat layer (adhesiveness of the support surface, Applied through one or more undercoat layers for improving antistatic property, dimensional stability, abrasion resistance, hardness, antihalation property, friction property and / or other property) Good.

When coating a photographic light-sensitive material using a silver halide emulsion, a thickener may be used in order to improve coatability. As the coating method, extrusion coating and curtain coating, which can simultaneously coat two or more layers, are particularly useful.

In order to form a photographic image using the silver halide photographic light-sensitive material of the present invention, the image recorded on the negative is optically combined with the silver halide photographic light-sensitive material to be printed. It may be imaged and printed, or after the image is once converted into digital information, the image is formed on a CRT (cathode ray tube) and then formed on the silver halide photographic light-sensitive material to be printed. Printing may be performed, or the printing may be performed by changing the laser light intensity based on digital information and scanning.

The color developing agents used in the color developing solution in the development processing of the silver halide photographic light-sensitive material according to the present invention include aminophenol and p-phenylenediamine which are widely used in various color photographic processes. A compound is used. In particular, aromatic primary amine type color developing agents are preferably used.

To the color developing solution, a known developing solution component compound can be added in addition to the above color developing agent. Generally, an alkali agent having a pH buffering action, a chloride ion, a development inhibitor such as benzotriazole, a preservative,
A chelating agent or the like is used. The silver halide photographic light-sensitive material of the present invention is subjected to bleaching treatment and fixing treatment after color development. The bleaching process may be performed simultaneously with the fixing process.
After the fixing process, a washing process is usually performed. Also,
As a substitute for the washing treatment, a stabilizing treatment may be performed.
As a development processing apparatus used for the development processing of the silver halide photographic light-sensitive material of the present invention, even if it is a roller transport type that conveys the light-sensitive material by sandwiching it between rollers arranged in a processing tank, The endless belt method of fixing and conveying may be used, but particularly, the method of forming the processing tank in a slit shape and supplying the processing liquid to the processing tank and conveying the photosensitive material may also be used.

[0059]

EXAMPLES The present invention will be described below with reference to examples, but the embodiments of the present invention are not limited thereto.

Example 1 A paper support was prepared by laminating high density polyethylene on both sides of a paper pulp having a basis weight of 180 g / m ² . However, on the side on which the emulsion layer was coated, a molten polyethylene containing 15% by weight of surface-treated anatase type titanium oxide dispersed therein was laminated to prepare a reflective support. Each layer having the constitution shown below was coated on this reflective support to prepare a multilayer silver halide photographic light-sensitive material, Sample 101. The coating liquid was prepared as follows.

Yellow coupler (Y-1) 26.7 g, dye image stabilizer (ST-1) 10.0 g, dye image stabilizer (ST-2) 6.67 g, additive (HQ-1) 0.67 g and high 60 ml of ethyl acetate was added to 6.67 g of the boiling point organic solvent (DNP) and dissolved, and this solution was 9.5 m of 15% surfactant (SU-1).
A yellow coupler dispersion was prepared by emulsifying and dispersing in 220 ml of 10% gelatin aqueous solution containing l using an ultrasonic homogenizer. This dispersion was mixed with a blue-sensitive silver halide emulsion (containing 8.68 g of silver) prepared under the following conditions to prepare a coating solution for the first layer. The coating solutions for the second to seventh layers were prepared in the same manner as the coating solution for the first layer. Further, as a hardening agent, (H-1) was added to the second and fourth layers, and (H-2) was added to the seventh layer. As the coating aid, surfactants (SU-2), (S
U-3) was added to adjust the surface tension.

The layer structure is as shown in the table below.

[0063]

[Table 1]

[0064]

[Table 2]

[0065]

[Chemical 4]

[0066]

[Chemical 5]

[0067]

[Chemical 6]

[0068]

[Chemical 7]

[0069]

[Chemical 8]

(Preparation of blue-sensitive silver halide emulsion) In 1000 ml of 2% gelatin aqueous solution kept at 40 ° C., the following (solution A) and (solution B) were taken for 30 minutes while controlling pAg = 6.5 and pH = 3.0. Are added at the same time, and the following (solution C) and (solution D) are added to pAg =
Simultaneously added over 180 minutes while controlling 7.3 and pH = 5.5.
At this time, the pAg was controlled by the method described in JP-A-59-45437, and the pH was controlled by using an aqueous solution of sulfuric acid or sodium hydroxide.

(Solution A) Sodium chloride 3.42 g Potassium bromide 0.07 g Water was added to 200 ml (Solution B) Silver nitrate 10 g Water was added to 200 ml (Solution C) Sodium chloride 102.7 g Potassium bromide 2.10 g Water was added to 600 ml (Solution D) After adding 300 g of silver nitrate and adding 600 ml of water, desalting was performed using a 5% aqueous solution of Demol N manufactured by Kao Atlas and a 20% aqueous solution of magnesium sulfate, and then mixed with a gelatin aqueous solution to obtain an average particle size. A monodisperse cubic emulsion EMP-1 having a diameter of 0.85 μm, a coefficient of variation (S / R) = 0.07 and a silver chloride content of 99.0 mol% was obtained. The coefficient of variation is the standard deviation S
Is defined as the ratio of the average particle size R to

The above emulsion EMP-1 was chemically ripened at 50 ° C. for 90 minutes using the following compound to obtain a blue-sensitive silver halide emulsion (Em-B1).

Sodium thiosulfate 0.8 mg / mol AgX chloroauric acid 0.5 mg / mol AgX stabilizer STAB-1 6 × 10 ⁻⁴ mol / mol AgX sensitizing dye BS-1 4 × 10 ⁻⁴ mol / mol AgX sensitization Dye BS-2 1 × 10 ⁻⁴ mol / mol AgX (Preparation method of green-sensitive silver halide emulsion) Addition time of (A solution) and (B solution) and (C solution) and (D solution)
In the same manner as EMP-1 except that the addition time of
A monodisperse cubic emulsion EMP-2 having an average grain size of 0.43 μm, a coefficient of variation (S / R) = 0.07 and a silver chloride content of 99.0 mol% was obtained.

The following compounds were used for EMP-2:
Chemical ripening was carried out at 120 ° C. for 120 minutes to obtain a green-sensitive silver halide emulsion (Em-G1).

Sodium thiosulfate 1.5 mg / mol AgX chloroauric acid 1.0 mg / mol AgX stabilizer STAB-1 6 × 10 ⁻⁴ mol / mol AgX sensitizing dye GS-1 4 × 10 ⁻⁴ mol / mol AgX (red Method for Preparing Sensitive Silver Halide Emulsion) Addition Time of (A Solution) and (B Solution) and (C Solution) and (D Solution)
In the same manner as EMP-1 except that the addition time of
A monodisperse cubic emulsion EMP-3 having an average grain size of 0.50 μm, a coefficient of variation (S / R) = 0.08 and a silver chloride content of 99.0 mol% was obtained.

The following compounds were used for EMP-3:
Chemical ripening at 90 ° C for 90 minutes to give a red-sensitive silver halide emulsion (E
m-R1) was obtained.

Sodium thiosulfate 1.8 mg / mol AgX chloroauric acid 2.0 mg / mol AgX stabilizer STAB-1 6 × 10 ⁻⁴ mol / mol AgX sensitizing dye RS-1 1 × 10 ⁻⁴ mol / mol AgX

[0078]

[Chemical 9]

[0079]

[Chemical 10]

In the preparation of Sample 101, the coating amounts of the blue-sensitive emulsion and yellow coupler dispersion, the green-sensitive emulsion and magenta coupler dispersion, the red-sensitive emulsion and cyan coupler dispersion were changed to obtain silver halide color having different gradations. A photographic light-sensitive material 102 was produced.

After exposing the samples 101 and 102 through a step tablet according to a conventional method, a color printer processor is used.
Konica Color QA using NPS602QA (manufactured by Konica Corporation)
Development processing was performed with a processing solution of Chemical Process CPK-20QA (manufactured by Konica Corporation). The obtained dye image was measured with a PDA-65 densitometer (manufactured by Konica Corporation), and a characteristic curve was prepared to evaluate the performance. The average gradient between the densities of 0.5 to 2.0 on the characteristic curve was G density. Sample 101 was 2.81 and Sample 102 was 3.25.

On the other hand, a standard color chart conforming to JIS Z8721 (1977) was photographed with the same color negative, the density of the color print produced from this was measured using a scanner, and the relationship between the analytical density of the color negative and the analytical density of the color print was measured. Was experimentally obtained.

Various scenes were photographed using Konica Color Super DD100 film (manufactured by Konica Co., Ltd.), developed by a conventional method, and printed on the above color paper using NPS602QA. It was presented to the subject to evaluate which print realized the more preferable gradation reproduction.

Next, the image portion of the color negative is divided into pixels having a side of 10 μm and the density is measured. From this data, from the relationship between the previously obtained analytical density of the color negative and the analytical density of the color print, each pixel is determined. The density on the print was determined. WS was determined using this data.

Table 3 shows the value of the inclination of WS and the result of the visual evaluation of the print.

[0086]

[Table 3]

When the WS setting value was set to 1.9 and a value close to this was selected, the print made from the sample 102 was evaluated higher in the case of scene 1, but the prints made from the sample 101 were evaluated in other scenes. The evaluation was higher. Therefore, when a value close to the WS setting value of 1.9 was selected, a support rate of 72% could be obtained, but when only sample 101 was selected, 56%, only sample 102 was selected. If you do, you can see that only 44% approval rate is obtained. It can be seen that the degree of gradation adjustment can be optimally determined by using the inclination of WS as a criterion.

Example 2 Samples 201 and 202 were prepared in the same manner as in Samples 101 and 102 of Example 1 except that the magenta coupler was changed to MC-1 below and the coating amount of the green-sensitive emulsion was doubled. did. Example 1
Evaluation was carried out in the same manner as above, and the results shown in Table 4 below were obtained.

[0089]

[Chemical 11]

[0090]

[Table 4]

When a value close to the WS setting value of 1.9 is selected, a support rate of 68% is obtained, whereas when only sample 201 is selected, the support rate is 62%, and in sample 202, it is 3%.
The approval rating was 8%. It was found that the effect of the present invention can be obtained even if the magenta coupler is changed.

Samples 101 and 201 were unexposed and uniformly exposed to green light of various intensities, and then developed by a conventional method, and then each L * was measured by the method described in JIS Z8729 (1980).
The values of a * and b * were determined, and the color difference was determined by the method described in JIS Z8730 (1980). In the M patch having the maximum color difference from the unexposed sample (white), the sample 101 had a color difference of 93.9 and the sample 201 had a color difference of 79.4.

When the prints produced in Examples 1 and 2 were compared, the difference between Samples 101 and 102 was visually perceived to be larger, and it was presumed that the difference of Samples 101 and 102 was significant as an effect of the present invention. .. Samples 101 and 102 are more
It was more preferable than the print made from 02 because it was superior in detail description.

Evaluations were made in the same manner except that the magenta couplers were replaced with (M-2) and (M-3) in the preparation of Samples 101 and 102, but it was confirmed that the effects of the present invention were obtained.

Example 3 The method of the present invention was applied to image formation by laser exposure using Sample 101. As image data, 5 kinds of 4 × 5 inch color slide images were prepared, read by a scanner, and digitized into a size of 80 × 80 μm per pixel.

The exposure apparatus uses helium.
The cadmium laser (about 442 nm), the helium-neon laser (about 544 nm) as the green light source, and the helium-neon laser (about 633 nm) as the red light source were prepared and the optical system was assembled. The light emitted from the three lasers is modulated according to the image data and then focused into one beam,
For silver halide photographic light-sensitive materials transported at a speed of
Scanning exposure was performed at a main scanning speed of 160 m / sec at a right angle to the carrying direction. The beam diameter at this time was about 80 μm, and the exposure time per pixel was 500 nanoseconds.

The gradation conversion tables used in the part for calculating the laser output signal from the image data are TBL-1 and TBL-2.
The gradations estimated from the results of preparing various types, reading a step tablet as an image, and outputting this as an image were 2.90 and 3.24, respectively. When the images output using TBL-1 and TBL-2 were evaluated in the same manner as in Example 1, the results shown in Table 5 were obtained.

[0098]

[Table 5]

According to the present invention, the support rate is 68%, and TBL-1
It was confirmed that both were improved compared to 60% of TBL-2 and 40% of TBL-2.

Next, an infrared-sensitive silver halide photographic light-sensitive material was prepared and evaluated in the same manner. (Preparation of infrared-sensitive silver halide emulsion (Em-IR1)) In the same manner as in the method for preparing the green-sensitive emulsion (Em-G1) of Example 1, except that the sensitizing dye was changed to (IRS-1). Infrared sensitive silver halide emulsion (Em-IR1)
An infrared-sensitive silver halide emulsion (Em-IS2) was prepared in the same manner except that the sensitizing dye was changed to (IRS-2).

[0101]

[Chemical 12]

In the preparation of Sample 101 of Example 1, the blue-sensitive silver halide emulsion was replaced by an infrared-sensitive silver halide emulsion (E
m-IR1), the green-sensitive silver halide emulsion was changed to the infrared-sensitive silver halide emulsion (Em-IR2), and the red-sensitive silver halide emulsion was changed to the red-sensitive silver halide emulsion used for preparing Sample 601. Sample 602 was prepared in the same manner except that the above was performed. Aluminum / gallium /
Indium-Phosphorus semiconductor laser (about 670nm), Gallium-Aluminum-Arsenic semiconductor laser (about 780nm),
Gallium / aluminum / arsenic semiconductor laser (about 830
nm) was prepared and the optical system was assembled. The specifications of the diameter of the light beam, the transportation speed, etc. were matched with those of the laser printer. Using this device, TBL-1 in the sample 101,
An image was output using TBL-2, and a color print with excellent image quality was obtained. The usefulness of the present invention was confirmed even in an image forming method using a laser.

Example 4 The effect of the present invention was confirmed with a color copier using a silver halide photographic light-sensitive material.

(Preparation of Emulsion EMP-4) An aqueous solution containing ossein gelatin was controlled at 55 ° C., and an aqueous solution of silver nitrate and an aqueous solution containing potassium bromide and sodium chloride (molar ratio KBr: NaCl = 40) while controlling vigorous stirring. : 60) were simultaneously added by the controlled double jet method to obtain a cubic silver chlorobromide emulsion A having an average particle size of 0.3 μm. Emulsion A was used as a core particle, and an aqueous solution of silver nitrate and an aqueous solution of sodium chloride were simultaneously added by the double jet method while maintaining at 55 ° C. and pAg = 6, and a cubic monodisperse core / shell emulsion EMP-4 having an average particle size of 0.6 μm was added. Got The coefficient of variation was 0.08.

The following layers were coated on the polyethylene laminated paper used for the preparation of Sample 101 to obtain a silver halide photographic light-sensitive material 401. The components and the coating amounts in g / m ² are shown below. The coating amount of silver halide is shown by the value converted to silver.

(First Layer: Red Sensitive Layer) Emulsion EMP-4 was spectrally sensitized with a red sensitive sensitizing dye (RS-2, RS-3) red sensitive emulsion 0.4 gelatin 1.38 cyan coupler (C-2) 0.21 Cyan coupler (C-1) 0.22 Image stabilizer (ST-1) 0.22 Solvent (DBP) 0.33 (Second layer: intermediate layer) Gelatin 0.75 Color mixture inhibitor (HQ-1) 0.055 Solvent (DOP) 0.072 (Third layer) : Green-sensitive layer) Green-sensitive emulsion obtained by spectrally sensitizing emulsion EMP-4 with green-sensitive sensitizing dye (GS-1) 0.27 Gelatin 1.30 Magenta coupler (M-1) 0.35 Image stabilizer (ST-6) 0.20 Solvent ( DIDP) 0.315 (4th layer: intermediate layer) Same as 2nd layer (5th layer: yellow filter layer) Gelatin 0.42 Yellow colloidal silver 0.10 UV absorber (UV-1) 0.14 UV absorber (UV-2) 0.05 Color mixing inhibitor (HQ-1) 0.04 (DHP) 0.08 (Sixth layer: Color-mixing prevention layer) Gelatin 0.40 Color-mixing inhibitor (HQ-1) 0.027 Solvent (DOP) 0.036 (Seventh layer: Blue-sensitive layer) Emulsion EMP-4 with blue-sensitive sensitizing dye (BS Blue-sensitive emulsion spectrally sensitized by -1) 0.50 Gelatin 1.35 Yellow coupler (Y-1) 0.84 Image stabilizer (ST-1) 0.30 Solvent (DHP) 0.52 (8th layer: UV absorber layer) Gelatin 0.54 UV absorption Agent (UV-1) 0.28 Ultraviolet absorber (UV-2) 0.10 Solvent (DBP) 0.12 (9th layer: protective layer) Gelatin 1.23 In addition, (SU-2) and (SU-3) were used as coating aids. , (H-2) as a hardening agent per 1 g of gelatin
Coating was carried out by adding 6 mg.

[0107]

[Chemical 13]

The processing steps and processing liquid composition of this photosensitive material are shown below.

Processing time (seconds) Processing temperature Immersion 2 38 ° C Exposure 5 38 ° C (Illuminance: 1 lux) Development 25 38 ° C Bleach-fixing 45 35 ° C Water wash 90 25-30 ° C Dry 45 75-80 ° C Treatment liquid composition ( Color developer) Benzyl alcohol 10.0g Ethylene glycol 8.55g Diethylene glycol 50g Ceric sulfate 0.015g Potassium sulfite 2.5g Potassium bromide 0.1g Sodium chloride 2.5g Diethylhydroxyamine (85%) 5.0g Diethylenetriamine sodium pentaacetate 2.0g N- Ethyl-N- (β-methanesulfonamidoethyl) -3-methyl-4-aminoaniline sulfate 7.0g Optical brightener (4,4'-diaminostilbene disulfonic acid derivative) 1.0g Potassium carbonate 30g Potassium hydroxide 2.0 g Add water to bring the total volume to 1 liter, and adjust to pH 10.10 with potassium hydroxide or sulfuric acid.

(Bleach-fixing solution) Diethylenetriamine pentaacetate ammonium ferric acid 90 g Diethylenetriamine pentaacetic acid 3 g Ammonium thiosulfate (70% solution) 180 ml Ammonium sulfite (40% solution) 27.5 ml 3-Mercapto-1,2,4-triazole
Add 0.15 g water to make the total volume 1 liter, and adjust the pH to 7.1 with potassium carbonate or glacial acetic acid.

(Washing solution) o-Phenylphenol 0.3g Potassium sulfite (50% solution) 12ml Ethylene glycol 10g 1-Hydroxyethylidene-1,1-diphosphonic acid 2.5g Bismuth chloride 0.2g Zinc sulfate 7-hydrate 0.7g Hydroxylation Ammonium (28% aqueous solution) 2.0g Polyvinylpyrrolidone (K-17) 0.2g Optical brightener (4,4'-diaminostilbene disulfonic acid derivative) 2.0g Add water to bring the total volume to 1 liter and add ammonium hydroxide or sulfuric acid. Adjust to pH = 7.5 with.

The water washing treatment was a countercurrent system with a two tank structure.

The coating amounts of the blue-sensitive emulsion and yellow coupler dispersion, the green-sensitive emulsion and magenta coupler dispersion, and the red-sensitive emulsion and cyan coupler dispersion were adjusted to obtain a light-sensitive material 402 having different gradations. Using this photosensitive material, a gray chart was copied with Konica Color 7 (manufactured by Konica Corp.) modified to realize the above processing process, and a characteristic curve was obtained. The average gradient from density 0.5 to 1.5 401
Was 1.38 and Sample 402 was 1.66. A color photograph and a printed matter were prepared as samples, the density was read using a scanner, the print density of the copy image was predicted based on this data, and WS was calculated from this. When an image obtained by copying this sample was used and evaluated in the same manner as in Example 1 with the WS setting value set to 2.0, when the gradation is selected using the inclination of WS, the support rate becomes high. It was confirmed that the effects of the invention can be obtained.

[0114]

According to the image forming method of the present invention, it is possible to select the gradation which gives an image having the most natural contrast in an apparatus having a unit capable of forming a plurality of images having different gradations. Become. As a result, an image having excellent gradation can be obtained in good yield.

[Brief description of drawings]

FIG. 1 is a simple flowchart for printing an image recorded on a color negative on color paper.

Claims (3)

[Claims] 1. A method for forming an image for viewing, which comprises means for predicting a Wiener spectrum of an image to be formed and means for forming an image of a plurality of gradations, the image to be formed is predicted in advance, and the image is spatially predicted. The Wiener spectrum is obtained from the density value when the light is divided, and the average value of the slope at the spatial frequency of 0.5 to 2 cycles / mm is compared with the set value,
A method for forming an image for viewing, characterized in that an image is formed by selecting one from a plurality of gradations of an image for viewing prepared in advance by selecting one close to a set value. 2. The method for forming an image for viewing according to claim 1, wherein the material for forming the image for viewing is a silver halide photographic light-sensitive material. 3. A material for forming an image for viewing is a yellow color-forming coupler, a magenta color-forming coupler on a reflective support,
A silver halide photographic light-sensitive material having a photographic constituent layer containing a cyan color-forming coupler, wherein the color difference between the color-developing portion and the minimum-density portion when the magenta color-forming coupler alone is developed (CIE 197
The image forming method for viewing according to claim 1, wherein the maximum value of 6 L * a * b * color difference in the color system is 85 or more.