CN108107668B - Developer, preparation method thereof and developer solution - Google Patents
Developer, preparation method thereof and developer solution Download PDFInfo
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- CN108107668B CN108107668B CN201711440884.2A CN201711440884A CN108107668B CN 108107668 B CN108107668 B CN 108107668B CN 201711440884 A CN201711440884 A CN 201711440884A CN 108107668 B CN108107668 B CN 108107668B
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- developer
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- ascorbic acid
- phenidone
- sodium
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/30—Developers
- G03C5/3028—Heterocyclic compounds
- G03C5/3035—Heterocyclic compounds containing a diazole ring
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/30—Developers
- G03C2005/3007—Ascorbic acid
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/30—Developers
- G03C5/3028—Heterocyclic compounds
- G03C5/3035—Heterocyclic compounds containing a diazole ring
- G03C2005/3042—Phenidone and analogues
Abstract
The invention provides a developer, a preparation method thereof and a developer solution, and relates to the technical field of photosensitive chemistry, wherein the developer comprises an ascorbic acid compound and phenidone, and the mass ratio of the ascorbic acid compound to the phenidone is (10-40): the developer provided by the invention has the advantages that the technical problems that the existing metol and hydroquinone are toxic and can cause harm to operators, and the phenidone is not toxic but has poor color development effect when being used alone are solved.
Description
Technical Field
The invention relates to the technical field of photosensitive chemistry, in particular to a developer, a preparation method thereof and a developer solution.
Background
The developing process of the film is a reduction process, and the developing process utilizes the reduction ratio Ag/Ag+The organic compound with more negative electrode potential reduces the silver ions on the exposed silver halide grains to metallic silver in an alkaline medium, and forms an image. The conventional developer mainly comprises metol, hydroquinone and phenidone, but metol has an etching effect on skin, is easy to cause allergic inflammation, has high toxicity to the hydroquinone, can cause hair loss after long-term contact, and can cause eye diseases when the disease is serious, and the phenidone has no toxicity and does not damage the skin, but has small image density and almost no use value when being used alone and needs to be matched with the hydroquinone for use. Therefore, there is a need for developing a developer with good color developing effect, no toxicity and no pollution.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a developer, which solves the technical problems that the existing metol and hydroquinone are toxic and can cause harm to operators, and the effect of single use of the phenidone is not good although the phenidone is non-toxic.
The developer provided by the invention comprises an ascorbic acid compound and phenidone, wherein the mass ratio of the ascorbic acid compound to the phenidone is (40-10): 1; preferably (15-20): 1.
further, the ascorbic acid compound is selected from at least one of L-ascorbic acid, sodium L-ascorbate and sodium erythorbate, preferably, the ascorbic acid compound is a composition of L-ascorbic acid and sodium erythorbate, and the mass ratio of the L-ascorbic acid to the sodium erythorbate is (1-2): (1-2).
Further, the developer comprises the following components in parts by mass: 10-20 parts of ascorbic acid compounds, 0.5-1 part of phenidone, 45-65 parts of antioxidant, 5-20 parts of buffering agent, 0.1-2 parts of antifogging agent and 0.5-2 parts of complexing agent.
Further, the developer also comprises 10-30 parts of 2, 4-diaminophenol by mass.
Further, the antioxidant is one selected from anhydrous sulfite, anhydrous bisulfite, metabisulfite and 2, 4-di-tert-butylphenol, and is preferably anhydrous sulfite, and more preferably anhydrous sodium sulfite.
Further, the buffer is selected from any one of sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate, preferably a composition of sodium carbonate and sodium bicarbonate, and the mass ratio of the sodium carbonate to the sodium bicarbonate is (1-4): (1-2).
Further, the anti-fogging agent is selected from at least one of 5-nitrobenzindazole, 6-nitrobenzimidazole, potassium bromide, triazole and tetrazole, and is preferably potassium bromide.
Further, the complexing agent is at least one selected from ethylenediamine tetraacetic acid, diethylenepentamine penta-acid, hexametaphosphate and citric acid, and is preferably ethylenediamine tetraacetic acid.
The invention also aims to provide a preparation method of the developer, which comprises the following steps: uniformly mixing an ascorbic acid compound, phenidone, an optional antioxidant, an optional buffering agent, an optional antifogging agent, an optional complexing agent and an optional 2, 4-diaminophenol to obtain the developer.
The invention also aims to provide a developer, which comprises the developer provided by the invention;
preferably, the developer is prepared by dissolving the developer in water.
The developer provided by the invention has good color development effect, is nontoxic and pollution-free, cannot cause harm to human bodies, and cannot pollute the environment through the mutual synergistic cooperation of the ascorbic acid compounds and the phenidone.
The preparation method of the developer provided by the invention is simple in process, convenient to operate and suitable for large-scale industrial production.
The developing solution provided by the invention is prepared by adopting the developing agent provided by the invention, not only has good developing effect, but also is non-toxic and pollution-free, and cannot cause harm to human bodies and pollute the environment.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
According to one aspect of the present invention, there is provided a developer comprising an ascorbic acid compound and phenidone, the mass ratio of the ascorbic acid compound to the phenidone being (10-40): 1; preferably (15-20): 1.
in typical but non-limiting embodiments of the invention, the mass ratio of the ascorbyl compound to the phenidone is 10:1, 12:1, 15:1, 18:1, 20:1, 22:1, 25:1, 28:1, 30:1, 32:1, 35:1, 38:1, or 40: 1.
In the invention, the ascorbic acid compound is prepared by a biological fermentation method, so that the ascorbic acid compound has no pollution to the environment and does not cause harm to operators.
Phenidone is non-toxic and does not damage the skin, but when used alone, the obtained image density is very small, and the phenidone has little use value.
The developer provided by the invention has good color development effect, is nontoxic and pollution-free, cannot cause harm to human bodies, and cannot pollute the environment through the mutual synergistic cooperation of the ascorbic acid compounds and the phenidone.
In a further preferred embodiment of the present invention, the ascorbate compound is at least one selected from the group consisting of L-ascorbic acid, sodium L-ascorbate and sodium erythorbate, preferably the ascorbate compound is a combination of L-ascorbic acid and sodium erythorbate, and the mass ratio of the two is (1-2): (1-2).
The ascorbic acid compound provided by the invention can be cooperatively matched with non-ninone for color development, the color development effect is clear and fine, and especially when the ascorbic acid compound is a composition of L-ascorbic acid and sodium erythorbate, the mass ratio of the L-ascorbic acid to the sodium erythorbate is (1-2): and (1-2), the color development effect is better when the composition is cooperated with phenidone.
In a preferred embodiment of the present invention, the developer comprises the following components in parts by mass: 10-20 parts of ascorbic acid compounds, 0.5-1 part of phenidone, 45-65 parts of antioxidant, 5-20 parts of buffering agent, 0.1-2 parts of antifogging agent and 0.5-2 parts of complexing agent.
In a preferred embodiment of the invention, the typical but non-limiting mass fraction of the ascorbyl compound is 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15, 15.5, 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5 or 20 parts.
Typical but non-limiting parts by mass of the phenidone are 0.5, 0.52, 0.55, 0.58, 0.6, 0.62, 0.65, 0.68, 0.7, 0.72, 0.75, 0.78, 0.8, 0.82, 0.85, 0.88, 0.9, 0.92, 0.95, 0.98 or 1 part.
Typical but not limiting parts by mass of the antioxidant are 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64 or 65 parts.
Typical but non-limiting parts by mass of the buffer are 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20 parts.
Typical but non-limiting parts by mass of the anti-fogging agent are 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 or 2 parts.
Typical but not limiting parts by mass of the complexing agent are 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 or 2 parts.
The developing agent provided by the invention has better color development effect and more durable and stable color development through the synergistic cooperation of the ascorbic acid compound, the phenidone, the antioxidant, the buffering agent, the antifogging agent and the complexing agent.
In a preferred embodiment of the present invention, the developer further comprises 10 to 30 parts by mass of 2, 4-diaminophenol.
2, 4-diaminophenol is added into the developer to be cooperated with other components, so that the stability of the developer at low temperature is improved, and crystallization of the developer at low temperature is avoided.
In a preferred embodiment of the invention, the typical but non-limiting mass fraction of 2, 4-diaminophenol is 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 or 30 parts.
In a further preferred embodiment of the present invention, the antioxidant is selected from one of anhydrous sulfite, anhydrous bisulfite, metabisulfite or 2, 4-di-tert-butylphenol, preferably anhydrous sulfite, more preferably anhydrous sodium sulfite.
The antioxidant is added into the developer, so that the antioxidant capacity of the developer is obviously enhanced, the developing performance of the developer is improved, the storage life of the developer is longer, and particularly when anhydrous sodium sulfite is selected as the antioxidant, the antioxidant performance of the prepared developer is better.
In a preferred embodiment of the present invention, the buffer is selected from any one of sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate, preferably a combination of sodium carbonate and sodium bicarbonate, and the mass ratio of the two is (1-4): (1-2).
The buffering agent is added into the developer to adjust the pH value of the developer, so that the developer can perform oxidation-reduction reaction with a film more quickly to accelerate the color developing efficiency. Particularly, when the buffering agent is sodium carbonate and sodium bicarbonate, the mass ratio of the sodium carbonate to the sodium bicarbonate is (1-4): (1-2), the development speed can be effectively accelerated, and the development efficiency can be improved.
In a preferred embodiment of the present invention, the anti-fogging agent is at least one selected from the group consisting of 5-nitrobenzindazole, 6-nitrobenzimidazole, potassium bromide, triazole and tetrazole, and is preferably potassium bromide.
In a preferred embodiment of the present invention, the development effect is improved by adding an antifogging agent to the developer to make the development more stable, and particularly, when the antifogging agent is potassium bromide, the color development effect is better.
In a preferred embodiment of the present invention, the complexing agent is selected from at least one of ethylenediaminetetraacetic acid, diethylenepentaminepentanic acid, hexametaphosphate and citric acid, preferably ethylenediaminetetraacetic acid.
The complexing agent is added into the developer, so that the components can be uniformly and stably dispersed without precipitation when the developer is prepared.
According to a second aspect of the present invention, there is provided a process for producing the above-mentioned developer, comprising the steps of:
uniformly mixing an ascorbic acid compound, phenidone, an optional antioxidant, an optional buffering agent, an optional antifogging agent, an optional complexing agent and an optional 2, 4-diaminophenol to obtain the developer.
The preparation method of the developer provided by the invention is simple in process, convenient to operate and suitable for large-scale industrial production.
According to a third aspect of the present invention, there is provided a color developing solution comprising the developer provided by the present invention.
In a further preferred embodiment of the present invention, the developer is prepared by dissolving the developer in water.
The developing solution provided by the invention is prepared by adopting the developing agent provided by the invention, not only has good developing effect, but also is non-toxic and pollution-free, and cannot cause harm to human bodies and pollute the environment.
The technical solution provided by the present invention is further described below with reference to examples and comparative examples.
Example 1
This example provides a developer comprising 10 parts sodium erythorbate and 1g phenidone, the mass ratio of the two being 10: 1.
Example 2
This example provides a developer comprising 20 parts of sodium L-ascorbate and 0.5g of phenidone, the mass ratio of the two being 40: 1.
Example 3
This example provides a developer comprising 12 parts of sodium L-ascorbate and 0.8g of phenidone, the mass ratio of the two being 15: 1.
Example 4
This example provides a developer comprising 15 parts sodium erythorbate and 0.75g phenidone, in a mass ratio of 20: 1.
Example 5
This example provides a developer comprising 14 parts sodium erythorbate and 0.76g phenidone, the mass ratio of the two being 18.4: 1.
Example 6
The embodiment provides a developer which comprises 6 parts of sodium erythorbate, 4 parts of L-ascorbic acid and 1g of phenidone, wherein the mass ratio of the ascorbic acid compounds to the phenidone is 10: 1.
Example 7
This example provides a developer, including 7 parts sodium erythorbate, 13 parts L-ascorbic acid and 0.5g phenidone, wherein the mass ratio of the ascorbic acid compound to the phenidone is 40: 1.
Example 8
This example provides a developer, including 10 parts sodium erythorbate, 5 parts L-ascorbic acid and 0.75g phenidone, wherein the mass ratio of the ascorbic acid compound to the phenidone is 20: 1.
Example 9
This example provides a developer, including 4 parts sodium erythorbate, 8 parts L-ascorbic acid and 0.75g phenidone, wherein the mass ratio of the ascorbic acid compound to the phenidone is 15: 1.
Example 10
This example provides a developer comprising 7 parts sodium erythorbate, 7 parts L-ascorbic acid, and 0.76g phenidone, wherein the mass ratio of the erythorbate to the phenidone is 18.4: 1.
Example 11
Embodiment 11 provides a developer including the developer provided in embodiment 1, 56 parts of anhydrous sodium sulfite, 11.6 parts of sodium carbonate, 6.2 parts of sodium hydrogencarbonate, 1 part of potassium bromide, and 1.6 parts of ethylenediaminetetraacetic acid.
Example 12
Example 12 provides a developer, and this example is different from example 11 in that the developer provided in example 2 is used instead of the developer provided in example 1.
Example 13
Example 13 provides a developer, and this example is different from example 11 in that the developer provided in example 3 is used instead of the developer provided in example 1.
Example 14
Example 14 provides a developer, and this example is different from example 11 in that the developer provided in example 4 is used instead of the developer provided in example 1.
Example 15
Example 15 provides a developer, and this example is different from example 11 in that the developer provided in example 5 is used instead of the developer provided in example 1.
Example 16
Example 16 provides a developer, and this example is different from example 11 in that the developer provided in example 6 is used instead of the developer provided in example 1.
Example 17
Example 17 provides a developer, and this example is different from example 11 in that the developer provided in example 7 is used instead of the developer provided in example 1.
Example 18
Example 18 provides a developer, and this example is different from example 11 in that the developer provided in example 8 is used instead of the developer provided in example 1.
Example 19
Example 19 provides a developer, and this example is different from example 11 in that the developer provided in example 9 is used instead of the developer provided in example 1.
Example 20
Example 20 provides a developer, and this example is different from example 11 in that the developer provided in example 10 is used instead of the developer provided in example 1.
Example 21
Example 21 provides a developer, and this example differs from example 20 in that 10 parts of 2, 4-diaminophenol are added.
Example 22
Example 22 provides a developer, and this example differs from example 20 in that 30 parts of 2, 4-diaminophenol are added.
Example 23
Example 23 provides a developer, and this example differs from example 20 in that 20 parts of 2, 4-diaminophenol are added.
Examples 24 to 36
Examples 24-37 provide methods of making the developers provided in examples 11-23 above, including the steps of: uniformly mixing an ascorbic acid compound, phenidone, optionally anhydrous sodium sulfate, optionally a sodium carbonate and sodium bicarbonate composition, optionally potassium bromide, optionally ethylene diamine tetraacetic acid and optionally 2, 4-diaminophenol to obtain the developer.
Comparative example 1
This comparative example, which differs from example 23 in that no ascorbic acid-based compound was added, provides a developer.
Comparative example 2
This comparative example, which differs from example 23 in that 0.2 parts of phenidone was provided as a developer.
Comparative example 3
This comparative example, which differs from example 23 in that phenidone was present in 4 parts, provides a developer.
Comparative examples 1 to 3 provide developers having the same preparation method as example 23 and are not described in detail.
Examples 37 to 49
Examples 38-51 each provide a developer prepared by dissolving the developer provided in examples 11-23 in 1000 parts of water.
Comparative examples 4 to 6
Comparative examples 4 to 6 each provide a developer prepared by dissolving the developer provided in comparative examples 1 to 3 in 1000 parts of water.
The developers provided in examples 38 to 51 and comparative examples 4 to 6 were subjected to performance tests, and the results are shown in the following table 1:
table 1 color developing solution performance test meter
| Color effect (grade) | Storage at-5 deg.C | Environmental protection property | |
| Example 37 | 1 | A small amount of crystals are precipitated | Non-toxic environment-friendly |
| Example 38 | 1 | A small amount of crystals are precipitated | Non-toxic environment-friendly |
| Example 39 | 1-2 | A small amount of crystals are precipitated | Non-toxic environment-friendly |
| Example 40 | 1-2 | A small amount of crystals are precipitated | Non-toxic environment-friendly |
| EXAMPLE 41 | 1-2 | A small amount of crystals are precipitated | Non-toxic environment-friendly |
| Example 42 | 2 | A small amount of crystals are precipitated | Non-toxic environment-friendly |
| Example 43 | 2 | A small amount of crystals are precipitated | Non-toxic environment-friendly |
| Example 44 | 2-3 | A small amount of crystals are precipitated | Non-toxic environment-friendly |
| Example 45 | 2-3 | A small amount of crystals are precipitated | Non-toxic environment-friendly |
| Example 46 | 3 | A small amount of crystals are precipitated | Non-toxic environment-friendly |
| Example 47 | 3 | No crystal precipitation | Non-toxic environment-friendly |
| Example 48 | 3 | No crystal precipitation | Non-toxic environment-friendly |
| Example 49 | 3 | No crystal precipitation | Non-toxic environment-friendly |
| Comparative example 4 | 0 | No crystal precipitation | Non-toxic environment-friendly |
| Comparative example 5 | 0 | No crystal precipitation | Non-toxic environment-friendly |
| Comparative example 6 | 0 | No crystal precipitation | Non-toxic environment-friendly |
Wherein, the color development is clearly and finely divided into 1 grade, the color development is very clearly and finely divided into 3 grades, the color development effect between the clear and fine color development and the very clean and fine color development is divided into 2 grades, and the color development effect is not clearly divided into 0 grade.
As can be seen from the comparison between examples 37 to 49 and comparative examples 4 to 6 in Table 1, the developing agent provided by the invention has good color development effect, is nontoxic and pollution-free, does not cause harm to human bodies, and does not pollute the environment by the synergistic cooperation of the ascorbic acid compounds and the phenidone.
As can be seen from the comparison of examples 47 to 49 with examples 37 to 46, the low temperature resistance of the developer can be significantly improved by adding 2, 4-diaminophenol to the developer, so that the developer can be stably stored even at-5 ℃.
As can be seen from the comparison of examples 39-41 with examples 37-38 in Table 1, when the mass ratio of the ascorbic acid compound to the phenidone is (15-20): 1, the color development is clear and the fineness is obviously improved.
As can be seen from the comparison of examples 42-46 with examples 37-41, when the ascorbic acid compound is a composition of L-ascorbic acid and sodium erythorbate, and the mass ratio of the L-ascorbic acid to the sodium erythorbate is (1-2): (1-2), the color development is clear and the fineness is better.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The developer is characterized by comprising the following components in parts by mass: 10-20 parts of ascorbic acid compounds, 0.5-1 part of phenidone, 45-65 parts of antioxidant, 5-20 parts of buffering agent, 0.1-2 parts of antifogging agent and 0.5-2 parts of complexing agent;
also comprises 10-30 parts of 2, 4-diaminophenol by mass;
the ascorbic acid compound is a composition of L-ascorbic acid and sodium erythorbate, and the mass ratio of the L-ascorbic acid to the sodium erythorbate is (1-2): (1-2);
the antioxidant is selected from one of anhydrous sulfite, anhydrous bisulfite, metabisulfite or 2, 4-di-tert-butylphenol;
the buffer is selected from any one of sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate;
the anti-fog agent is selected from at least one of 5-nitrobenzindazole, 6-nitrobenzimidazole, potassium bromide, triazole and tetrazole; the complexing agent is at least one selected from ethylenediamine tetraacetic acid, diethylenepentamine penta-acid, hexametaphosphate and citric acid.
2. The developer according to claim 1, wherein the antioxidant is an anhydrous sulfite.
3. The developer according to claim 1, wherein the antioxidant is anhydrous sodium sulfite.
4. Developer according to claim 1, characterized in that the buffer is a composition of sodium carbonate and sodium bicarbonate in a mass ratio of (1-4): (1-2).
5. The developer according to claim 1, wherein the anti-fog agent is potassium bromide.
6. The developer according to claim 1, wherein the complexing agent is ethylenediaminetetraacetic acid.
7. The process for producing the developer according to any one of claims 1 to 6, comprising the steps of: uniformly mixing ascorbic acid compounds, phenidone, an antioxidant, a buffering agent, an antifogging agent, a complexing agent and 2, 4-diaminophenol to obtain the developer.
8. A developer comprising the developer according to any one of claims 1 to 6.
9. The developer according to claim 8, wherein the developer is prepared by dissolving the developer in water.
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| CN1332392A (en) * | 2000-06-26 | 2002-01-23 | 中国科学院感光化学研究所 | Concentrated black-and-white developer solution and its prepn |
| GB0427164D0 (en) * | 2004-12-11 | 2005-01-12 | Eastman Kodak Co | Conductive silver dispersions and uses thereof |
| JP4563323B2 (en) * | 2006-01-20 | 2010-10-13 | コニカミノルタオプト株式会社 | Hologram production method |
| TW201610609A (en) * | 2014-05-20 | 2016-03-16 | 柯達公司 | Silver halide solution physical developing solution and method of use |
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