JPH11160837A - Photographic element and improved burn-in and dodge printing method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable dodge and burn-in printing easily by using a printing machine by using the photographic element containing at least one kind of absorber dye and at least one kind of sensitizing dye similar to each other in the peak sensitivity of them. SOLUTION: The photographic element contains at least one kind of absorber dye and at least one kind of sensitizing dye similar to each other in the peak sensitivities. The absorber dye similar in light response to the spectrally sensitizing dye of the emulsion is selected, and at that time, it is preferred that the peak responses of the spectral sensitizing dye and the absorber dye overlap each other by >=75%, further at least 90%, especially, above 90% in order to adjust speed most easily even by using the least amount of the absorber dye and maintain the sharpness of the photographic element to the best.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an element for producing a photographic image. In particular, it relates to a sensitizing dye and an absorbing dye for color paper.

[0002]

2. Description of the Related Art Color photographic paper is a large-scale developing machine capable of producing a large number of photographic prints under continuous operation conditions, and a small-scale developing machine used to produce a small amount of photographic prints under discontinuous operation conditions. Used in a wide variety of photographic developing machines, including developing machines. These developing machines are known to have widely different mechanical designs, and the operating conditions of these developing machines vary widely in ambient temperature and humidity due to widely varying use environments.

In order to provide color photographic paper that meets the requirements of all different processors and conditions and withstands large environmental changes, the problem of color paper performance variations with changes in heat and humidity at the operating site is addressed. There must be. One of these variations is the sensitivity of photographic paper to changes in heat. It is desirable to create a photographic material that does not change with temperature in any environment, such that the photographic response does not change when the ambient temperature changes during operation of the processor. Alternatively, satisfactory results are achieved when the photographic response is neutral to changes in environmental temperature (ie, the photographic material can have a different response to temperature changes, but each of the constituent layers The change is not noticeable to the operator because the temperature effect of this is synchronized to negate the effect of the temperature change).

In the manufacture of color photographic paper, it is important to maintain the activity of the photographic components so that the photographic response does not change during manufacture. To ensure consistent results, it is necessary to monitor photographic activity during manufacture. Many accidental changes occur during manufacturing, affecting photographic response characteristics such as photographic speed. These speed fluctuations can be measured during the manufacturing process and can be adjusted to maintain a consistent response. It would be very advantageous for the photographic material manufacturing process if the adjustment of the component levels resulted in a linear response to the speed value. In addition, the cost advantages increase as less material is used to achieve the desired photographic effect.

[0005] If photographic performance is compromised,
The advantages obtained in the production of color paper are not achieved.
Therefore, it is desirable to balance the advantages of manufacturing with the advantages of photographic performance. It is known that the sharpness of the photographic material is the criticality of the tolerance for use, and it is known that if the manufacturing process fluctuates, the sharpness or detail will fluctuate. It is highly desirable not to worsen and more desirably such variations lead to improved sharpness.

[0006] Color photographic paper is intended to meet the needs of photographers in the field of photography. To "burn in" the desired image to a greater extent,
Adjusting the exposure of photographic materials is generally done by the photographer under conditions where certain areas of the print may receive more light than normal exposure. Alternatively, cover the area of the print from normal exposure,
In this method, “dodging” is performed to create a desired image. In the case of dodging and burning techniques, the presence of color photographic materials having dark areas prior to exposure hinders the photographer or operator of the enlarger. Also, because various absorber dyes are added to adjust their properties, the undeveloped color of color paper varies between batches. This makes dodging and burning more difficult, as different unexposed paper colors cause the paper to look different upon exposure.

[0007]

There is a need for a photographic paper that can be easily adjusted to control speed and sensitivity during manufacture without loss of sharpness. In the dodging and burning processes in printing, there is still a need for color paper that makes it easy for a photographer to see the image that is being exposed. It is an object of the present invention to overcome the disadvantages of conventional photographic elements. It is also an object of the present invention to provide a color paper that is easy for a baking machine operator to dodge and bake accurately during baking.

[0008] Without greatly changing the color of the undeveloped paper,
It is also an object of the present invention to provide a color paper having sensitometric and speed characteristics adjusted during manufacture. It is a further object of the present invention to provide a color paper with lower manufacturing costs.

[0009]

SUMMARY OF THE INVENTION These objects are generally attained by providing a photographic element comprising at least one absorber dye and at least one sensitizing dye, the photographic element comprising the absorber dye and the sensitizing dye. Is achieved by providing photographic elements having similar peak sensitivities. In addition, these objectives are generally addressed by providing a color photographic element having CIELAB coordinates such that L ^* is greater than 71 prior to development, exposing the paper, and burning and dodging upon exposure. This is achieved by providing an improved burning and dodging method comprising: Also,
In the present invention, the CIELAB coordinates are selected such that the paper before development has L ^* greater than 71, a ^* greater than 18, b ^* greater than 2.8, and c ^* greater than 18. Also provided is a color photographic paper having improved spectrophotometric properties.

[0010]

DETAILED DESCRIPTION OF THE INVENTION The present invention has many advantages over conventional photographic elements. The photographic elements of the present invention have lower manufacturing costs because the absorber dye and the sensitizing dye have the same peak response and require less agent to adjust the overall sensitivity of the photographic element. Furthermore, the adjustment is more accurate. Because the absorber dyes do not need to be adjusted, the papers of the present invention are light in color and have low color variability between batches with different adjustments. Cost is saved because fewer agents are used to adjust paper properties during manufacture. In addition, the paper always looks the same, which will satisfy many users. Previously, even though the photos developed from photographic paper were very uniform, users could change the color of the unexposed paper,
Users were worried. Another advantage is that when printing photographs on the elements of the present invention, the paper is lightly colored so that the printer operator can more easily dodge and burn, and this lighter color can be used between batches. Does not change much. These advantages of the present invention will be apparent from the detailed description below.

In the manufacture of color paper and other photographic products (eg, color negative films), it is known to use absorbent dyes to control the speed of the color paper. These absorber dyes allow the photographic element to be sold at a fixed speed for more than a period of time, even if the speed of the photographic emulsion changes somewhat to prolonged production. By using this absorbent dye, the speed is kept constant for a long time.

In the present invention, the absorber dye is selected to have a light response similar to the spectral sensitizing dye of the emulsion.
Although absorber dyes have been used in the art, there is no recognition of the advantages of adjusting the band absorption of the absorber dye in the same way as the spectral sensitizing dye band absorption. To obtain the advantages of the present invention, the peak response of the spectral sensitizing dye and the absorber dye must be at least 75% of the spectral sensitizing dye envelope.
% Overlap was found to be good. These dyes are 7
It preferably has a spectral envelope overlap of 5% or more. "Spectral envelope" is the area under the spectral sensitization curve of a particular spectral sensitizing dye. The spectral sensitization curve is
For a particular sensitizing dye, it is measured by the sensitivity of silver halide to light of various wavelengths. This is done using a standard wedge spectrophotometer. In order to most easily control speed with the least amount of absorber dye and to maintain the best sharpness of the photographic element, at least 90% or more than 90% of the spectral sensitizing dye spectral envelope Preferably overlap.

In any color photographic product, the present invention can be used to adapt a sensitizing dye absorber dye. Dye control of peak sensitivity can be used for red, blue, or green sensitive layers. It has proven to be preferred for the red-sensitive layer. Because the addition of an absorber dye to this layer results in a darker photographic element that makes printing more difficult, it is more difficult to dodge and burn on dark color paper, and Some dyes have widely separated peak sensitivities. If the absorber dye and the spectral dye have the same peak, as in the present invention, linear adjustment of the speed value during manufacture is possible.

In the red-sensitive layer of the photographic element, any red spectral sensitizing dye can be used. Red sensitizing dyes suitable for use in color paper are symmetrical or asymmetrical benzothiazole dicarbocyanines, benzoxazole dicarbocyanines, benzothiazole-benzoxazole dicarbocyanines, such as Research Disclosure. ), # 38957, 1996
Sensitizing dyes described in September. Preferred red sensitizing dyes for use in color paper are symmetric or asymmetric benzothiazole dicarbocyanines. Preferred materials are Class A and Class B.

Class A dyes are represented by Structural Formula I, and the substituents W ₁ -W ₈ are selected such that J is greater than or equal to 0.0. Here, J is defined as the sum of the Hammett Sp values of W _{1 to} W ₈ . Alternatively, the class A dye can have structural formula II and the substituents W ₁ -W ₈ are selected such that J is greater than or equal to 0.24.

Class B dyes have the structural formula II,
The substituents W _{1 to} W ₈ are selected such that J is 0.10 or less. Alternatively, the class B dye has the structural formula I and the substituents W ₁ -W ₈ are selected such that J is -0.14 or less.

[0017]

Embedded image

In the above formula, R ₁ and R ₂ each independently represent an alkyl group or a substituted alkyl group;
X is a counter ion as necessary to balance the charge of the dye, Z is hydrogen or a halogen atom or an alkyl or substituted alkyl group, and Z ₁ and Z
₂ is each independently an alkyl group having 1 to 8 carbon atoms.

Preferred sensitizing dyes are of the following formula:

Embedded image

In the present invention, any absorbent dye can be used. Suitable absorber dyes are of the formula

Embedded image

In the above formula, G is oxygen, substituted nitrogen, or C (CN) ₂ , and R ¹ , R ^{1 ′} , R ² and R ^{2 ′}
Each independently represents H or a substituent, or R ¹ and R ² , R ^{1 ′} and R ^{2 ′} may form a ring;
³ is an alkyl, aryl, alkyloxy, aryloxy, amino, or heterocyclic group, all of which may or may not be substituted; m is 0,
1, 2, or 3; L is all together a methine chain; each L is methine; some can be substituted or unsubstituted; and M ⁺ is a cation.

Preferred red absorber dyes have the same peak sensitivity as the preferred sensitizing dye. A preferred absorber dye is D-7 shown below. In the case of the green-sensitive layer and the blue-sensitive layer, a combination of absorber dye sensitizing dyes having the same peak sensitivity can be selected. The spectral envelope of a dye can be measured by several techniques. A preferred technique is absorbance spectroscopy.

The color paper brightness desired for a professional printer is determined by examining how the printer operator determines how to illuminate the paper to improve control of the baking and dodging process. It is determined. The lighter color of the paper makes the printing and dodging process easier because the printer operator can efficiently determine the shade of shade of the image projected by the enlarger on color paper. If the paper is dark, it will be difficult for the printer operator to burn and dodge efficiently because the tone of the image will not be clear when projected. This results in trial and error, wasting time and paper material.

The preferred brightness of the color paper is in the color space where L ^* is greater than 71. In a preferred form, the value of L ^* is greater than 76. The meaning of spectrophotometric data for a ^* , b ^* , c ^* , and L ^* is well known in the photographic art. These color coordinates are well-known metrics in the CIE system (International Commission on Illumination) and their derivation has been discussed at length in many textbooks of color science. One such example is the Principle of Color Technology, second edition by F. Billmeyer, Jr. and M. Saltzman (198
Published by J. Wiley and Sons for one year)
Pages 5 to 66 are important.

Thus, the weighing, a^*And b^*Is the color of the object
It is a measure. a^*Is generally the red or green
It can be considered as a measure of quantity. a^*Objects with positive values
Is increasingly red, but a^*If is a negative value, the object
Indicates the degree of green. Similarly, b ^*So, positive values are more yellow
Indicates color, negative b^*The value indicates that it is increasingly blue.

The brightness or darkness of an object is L^*Using terms
Measured. L^*A value of 100 indicates that the object is completely white
Indicates that L^*A value of 0 indicates that the object is completely black
You. L between 0 and 100^*The value indicates an intermediate brightness.
Saturation (ie, color saturation) is calculated using the following equation.
^*Is calculated as In black-and-white image forming systems, this is almost
It has little meaning. Because both have no color
Which is almost zero indicating^*Terms and b^*Derived from the term
This is because that. In black and white photos, c^*Again almost zero
It is. For objects that are to be neutral, c^*Is very small
The value a^*And b ^*Should have. In fact, a^*as well as
b^*Approaches zero, the amount of color in the object decreases,
The body has a more neutral appearance. In the example below,
L^*Describes the brightness of the sample patch, and
Does not matter.

FIG. 1 of the accompanying drawings illustrates the overlap of the spectral sensitivities of red sensitizing dyes and red absorbing dyes of typical prior art papers. As can be seen, the spectral red absorber dye curve A does not exactly match the spectral sensitizer dye curve B for that absorbing dye. The area under these curves on the horizontal axis is called the spectral envelope for the dye.
As can be seen from FIG. 1, the overlap is about 50%. The fact that the dyes do not have the same peak sensitivity means that more absorbing dye needs to be added to control the response of the sensitizing dye than when the peaks are the same. The color paper is darker, making it more difficult for the printer operator to burn and dodge. Also, sharpness is obtained only when the amount of absorbent is used in luxurious and large amounts. Furthermore, due to the green exposure from the higher red density areas of the negative image, detail is reduced because less cyan dye is formed on the paper.

FIG. 2 shows a set of red sensitizing dyes 8 (curve D) and red absorbing dyes 7 (curve C) of the dyes of the present invention. As shown in FIG. 2, these dyes have overlapping peak sensitivities at about 90% of their spectral envelope. This requires little dye to change sensitivity to the same extent, and creates an additional cyan dye as a result of the enhanced paper red sensitivity (625 nm to 700 nm) in the red region of the image. The advantage of increased detail is obtained. As a result, the overall red sensitivity of the present invention is increased in the above spectral range compared to current paper. This increased red spectral sensitivity region (in photographic paper) produces a proportionately improved cyan image dye that produces perceived red detail. In addition, since the control is now linear, the sharpness does not decrease and sharpness can be achieved with less absorber dye than in FIG.

The present invention can be suitably carried out on any photographic material. Preferred for use in the present invention are transparent materials, reversal transparent materials, motion picture negative films, and motion picture films. Further, the present invention is suitable for a color negative film. Most preferred for the present invention is the use of negative color paper, which can maintain the benefits of red detail in production. The present invention can be used with any of the silver halide grains and couplers commonly used in color papers and color negative films. Further, the present invention can be used with any conventional spectral sensitizing dye that results in a spectral envelope compatible with the absorbing dye. Typical materials suitable for the present invention are Research Disclosure 38957,
It is described on page 592, September 1996. Color coupler materials suitable for the present invention are described in Research Disclosure 37038, February 1995, 79-115.
Page.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described with reference to the following examples. This is not intended to cover all possible variants of the invention. Parts and percentages are by weight unless otherwise indicated. Preparation of Preparation Emulsion E1 of Example 1 Approximately equimolar amounts of silver nitrate and sodium chloride solutions were added to a reaction vessel containing a gelatin peptizer and a thioether ripener to precipitate a high chloride silver halide emulsion. The osmium dopant was added during the formation of the mostly precipitated halide grains and then shelled without dopant. The resulting emulsion contained cubic shaped grains having a side length of 0.76 μm. By adding a colloidal suspension of gold sulfide, the emulsion is then tilt heated and the sensitizing dyes D-1,1- (3-acetamidophenyl) -5-mercaptotetrazole and potassium bromide are added. This emulsion was optimally sensitized. In addition, iridium and ruthenium dopants were added in this sensitization process.

Preparation of emulsion E2. Approximately equimolar amounts of silver nitrate and sodium chloride solutions were added to a reaction vessel containing a gelatin peptizer and a thioether ripener to precipitate a high chloride silver halide emulsion. The osmium dopant was added during the formation of the mostly precipitated halide grains and then shelled without dopant. The resulting emulsion contained cubic shaped grains having a side length of 0.30 μm. A colloidal suspension of gold sulfide is added, and the emulsion is then ramp heated to provide iridium dopant, lippan bromide and 1- (3-acetamidophenyl) -5-mercaptotetrazole, sensitizing dye D-2, and more. Then 1
This emulsion was optimally sensitized by adding-(3-acetamidophenyl) -5-mercaptotetrazole.

Preparation of emulsion E3. Approximately equimolar amounts of silver nitrate and sodium chloride solutions were added to a reaction vessel containing a gelatin peptizer and a thioether ripener to precipitate a high chloride silver halide emulsion. The resulting emulsion contained cubic shaped grains having a side length of 0.40 μm. A colloidal suspension of gold sulfide was added, and the emulsion was gradient heated to 1- (3-acetamidophenyl) -5-mercaptotetrazole, potassium bromide and red sensitizing dye D-.
By adding 3, the emulsion was optimally sensitized.
In addition, iridium and ruthenium dopants were added in this sensitization process.

Using techniques known in the basic art,
These emulsions were combined with the dispersion and the resulting light-sensitive silver halide component was applied to a resin-coated paper support as described in Coating Format 1 to give Example 1. Samples 101-106 were obtained by adjusting the amount of absorber dye in Example 1 as shown in Table I.

Preparation of Example 2 Example 2 was prepared as described in Example 1, except that D-6 was replaced with D-7 in coating format 1.
The amount of absorber dye in Example 2 was adjusted as shown in Table I,
Samples 201 to 206 were obtained.

Preparation of Example 3 Example 3 was prepared as described in Example 1, except that D-3 was replaced by D-8 in coating format 1.
Samples 301-303 were obtained by adjusting the amount of absorber dye in Example 3 as shown in Table II.

Preparation of Example 4 Example 4 was prepared as described in Example 2, except that D-3 was replaced by D-8 in coating format 1.
Samples 401-403 were obtained by adjusting the amount of absorber dye in Example 4 as shown in Table II.

[0037]

Embedded image

[0038]

[Table 1]

[Table 2]

Structural formula

Embedded image

Dibutyl phthalate S-2

Embedded image

2- (2-butoxyethoxy) ethyl acetate S-3

Embedded image

1,4-cyclohexyldimethylenebis (2-ethylhexanoate) S-4

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[0043]

[Table 3]

Table I shows that increasing the amount of the dye of the present invention continuously improves the sharpness, but with the comparative dye, the sharpness reaches the maximum value, and even when an additional amount is added, the sharpness is further improved. Give no improvement. In addition, the in-process speed decreases continuously with an increase in the amount of the dye of the present invention (ie,
It is clear from Table I that it shows a linear relationship). The comparative dye does not continuously decrease in speed as the amount of dye increases, and shows a non-linear relationship. The dyes of the present invention have useful advantages over a wide range of adjustments during manufacture. It is further evident from Table I that the dyes of the invention can be used in smaller amounts to obtain the speed and sharpness position of the comparative dyes.

[0045]

[Table 4]

Table II shows that at the same laydown of the absorber dye, the sensitivity to ambient temperature changes can be controlled by the combination of the absorber dye of the present invention and a sensitizing dye which leads to a large decrease in sensitivity.

Examples 1-4 These four samples were exposed using dodging and burning. Examples 2 and 4 (invention) were found by photographers to be a significant advantage in that dodging and burning were simple and accurate. The four types of papers were tested as follows, and the spectral photometric characteristics of these color papers were measured. Test batches were taken from each unexposed paper and tested as follows.

In our colorimetric calculations, we assumed a color temperature of D5500 and a 1931 CIE 2 ° standard observer. In the above application example, the colorimetric result of the test patch is a ^* value-1.15.
And b ^* value was 1.23, and brightness L ^{* was} 38.2. a
^* Values and b ^* values were brought close to zero to achieve neutrality. As an additional confirmation, when viewed under the appropriate D5500 illumination, the sample patch was clearly visually neutral without color bias.

The calculation of the colorimetric values of a ^* , b ^* , L ^* and c ^* is straightforward and is discussed in detail in the above-mentioned literature. However, to further clarify their listing, the following derivation is made for the four terms. First, it is necessary to know the spectral output distribution of the light source used as the colorimetric light to be visually observed. In these calculations, a daylight source with a color temperature of 5500 ° Kelvin (D5500) was selected. The spectral power distribution P (λ) of this light source is well known and was chosen to use a spectral range of 340 nm to 800 nm in 10 nm increments. Second, the reflection spectrum R of the observed object
(Λ) must be known. These data can be conveniently obtained by using a commercially available reflection spectrophotometer. The measured wavelength range is 340 nm to 800
nm. Finally, the 1931 CIE 2 ° standard observer functions x (λ), y (λ) and z (λ) must be known. These values are also conveniently obtained from the above cited textbooks over the required wavelength range.

Once the above values have been obtained, they are multiplied together by the spectrum as a function of wavelength to give x
The values of (λ), y (λ) and z (λ) are summed to obtain tristimulus values, X, Y and Z. Once obtained, the colorimetric values of a ^* , b ^* , L ^* and c ^* are calculated using the tristimulus values according to the following equations.

A ^* = 500 [(X / X _n ) ^1/3 − (Y / Y _n ) ^1/3 ] b ^* = 200 [(Y / Y _n ) ^1/3 − (Z / Z _n ) ^{1 / 3] L * = 116 (} Y / Y n) 1/3 -16 c * = (a * 2 + b * 2) 1/2 ( wherein the X _n, Y _n and Z _n, the reference white three Stimulus value). The test results are shown in Table III below.

[0052]

[Table 5]

As can be seen from the evaluation of the values in Table III,
Inventive Examples 2 and 4 have values that, when printed, indicate the brightness that allows for good burning and dodging of this photographic print. Table III shows the measured values for four examples.
The measured value was read on the surface of the paper raw material. Two sets of readings were taken for each sample.

1) The first set is CIELAB coordinates L^*, A
^*, B^*, And C^*Give a spectral densitometer for use
This is the reading I went to. L^*The higher the value, the
The appearance of the sample of the lamp becomes brighter. a ^*, B^*
The coordinates represent the color of the sample. c^*The value is [(a^*)
(A^*) + (B^*) (B^*)] Is the square root of
Lightness (L^*) Represents the color saturation.

The following plot of a ^* vs. b ^* shows the selection of each of the four quarters and where the preferred areas of the invention are located.

[Outside 1]

Next L^*Versus c^*In the plot of
And where the preferred regions of the invention are located.
You. L^*The higher the value, the better the sample appearance
Become. But L^*Is less than 71 is an undesirable area
You. L^*However, 71 to 76 are acceptable regions. L ^*value
Is more than 76, which is a preferable region of the present invention.

[0057]

[Outside 2]

2) The second set of readings is made using a Status A densitometer that provides red (R), green (G), and blue (B) values. As you can see, the higher red reading (keep the other G, B approximately the same)
Means more red density, so more cyan appears in the sample. Example 2 has a more red R = 20 compared to Example 1 which is more cyan (R = 39). Comparing Examples 3 and 4 shows much more red / cyan difference than comparing Examples 1 and 2, but also shows that the green and blue densities of the inventive dyes are similarly low. If all three concentrations were low, the sample would look brighter. The set of R, G, and B values correlates with the L ^* , a ^* , b ^* , and c ^* values. Both the R, G, B and CIELAB values show a sample color that is redder in Example 2 and a sample color that is more cyan in Example 1. Further, in Example 4, both values indicate a redder and lighter sample color, and in Example 3 a more cyan and darker color.

[0059] Other preferred embodiments of the present invention are described below in connection with the claims. (Aspect 1) The peak sensitivity is 75% of the spectral envelope
2. The photographic element of claim 1 which overlaps. (Aspect 2) The photographic element according to claim 1, wherein the peak sensitivities are within 0 to 25 nm of each other.

(Embodiment 3) The photographic element according to claim 1, wherein the dye is in a red-sensitive layer. (Embodiment 4) A photographic element according to claim 1, wherein said absorber dye comprises a compound of the following formula:

Embedded image

(Embodiment 5) The sensitizing dye has the following structural formula:

Embedded image A photographic element according to claim 1 selected from: (Aspect 6) The absorbent dye is a compound of formula I

Embedded image (Where G is oxygen, substituted nitrogen, or C
(CN) ₂ , wherein R ¹ , R ^{1 ′} , R ² and R ^{2 ′} each independently represent H or a substituent, or R ¹ and R ² , R ^{1 ′} and R ^{2 ′} represent a ring Wherein R ³ is alkyl, aryl, alkyloxy, aryloxy,
An amino or heterocyclic group, which may be substituted or unsubstituted, m is 0, 1, 2, or 3; L is a methine chain; Is a methine, some of which can be substituted or unsubstituted, and M ⁺ is a cation).

(Embodiment 7) The photographic element according to claim 1, further comprising a sensitizing dye represented by the following formula:

Embedded image (Aspect 8) The peak sensitivity is 90% of the spectral envelope.
A photographic element according to claim 1 overlapping by more than%.

(Embodiment 9) L ^* is more than 76 and a ^* is 1
Is greater than 8, b ^* is greater than 2.8, and c ^* is 18
3. The method of claim 2, which is super. Aspect 10. The photographic element of claim 2, wherein the photographic element comprises at least one absorber dye and at least one sensitizing dye, wherein the absorber dye and the sensitizing dye have similar peak sensitivities. Method.

(Embodiment 11) The method according to embodiment 10, wherein the peak sensitivity of the photographic element overlaps 75% of the spectral envelope. (Aspect 12) The peak sensitivities are each 0 to 25 nm.
The method of claim 10, wherein

(Embodiment 13) The method according to embodiment 10, wherein the dye is in a red-sensitive layer. (Aspect 14) The method according to Aspect 10, wherein the absorbent dye contains a compound of the following formula:

Embedded image

[0066]

An advantage of the present invention is that a color paper is produced which is easily controlled with respect to sensitivity and speed during production. Another advantage is that when printing photographs on the elements of the present invention, the paper is lightly colored and this light color does not fluctuate significantly between batches, so it is easier to dodge and burn with a printing machine. It can be carried out.

[Brief description of the drawings]

FIG. 1 shows a prior art dye sensitivity comparison between a spectral dye and an absorber dye.

FIG. 2 shows a dye sensitivity comparison between the spectral dye and the absorber dye of the present invention.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI G03C 7/20 G03C 7/20 (72) Inventor Pamela Mace Ferguson United States, New York 14425, Famington, Yang Road 5955 (72) Inventor Joseph Earl Labarka New York, USA 14626, Rochester, Briar Wood Lane 60

Claims (2)

[Claims] A photographic element comprising at least one absorber dye and at least one sensitizing dye, wherein the sensitizing dye and the sensitizing dye have similar peak sensitivities. 2. An improvement comprising, prior to development, providing a color photographic element having CIELAB coordinates such that L ^* is greater than 71, exposing the paper, and performing baking and dodging during exposure. Baking and dodging methods.