CN102955352A - Combined developing and fixing solution for chemical treatment of dental X-ray films - Google Patents
Combined developing and fixing solution for chemical treatment of dental X-ray films Download PDFInfo
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- CN102955352A CN102955352A CN2012100632479A CN201210063247A CN102955352A CN 102955352 A CN102955352 A CN 102955352A CN 2012100632479 A CN2012100632479 A CN 2012100632479A CN 201210063247 A CN201210063247 A CN 201210063247A CN 102955352 A CN102955352 A CN 102955352A
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Abstract
The invention discloses a combined developing and fixing solution for chemical treatment of dental X-ray films, which comprises a developer, a protective agent, a developing accelerator and an antifogging agent, and in the solution, 1-pheny1-5-tetrazole-thione is taken as the organic antifogging agent. The application amount of the 1-pheny1-5-tetrazole-thione is 20-400 mg/l, the application amount of the developer phenidone is 1-6 g/l, the application amount of hydroquinone is 15-40 g/l, the application amount of the protective agent anhydrous sodium sulfite is 20-75 g/l, the application amount of the developing accelerator sodium hydroxide is 6-25 g/l, and the application amount of a fixing agent sodium thiosulfate is 75-250 g/l. The solution is simple in preparation, easily-purchased in raw materials and small in chemical processing consumption, can realize the bright-room chemical treatment of dental X-ray films, and has significant economic benefits. The 1-pheny1-5-tetrazole-thione of the solution is strongest in adsorption effect, largest in activity and small in dosage, obviously restrains fogs, and has small influences on the photosensibility and the maximum density.
Description
Technical field
The invention belongs to the photograph chemistry technical field, is a kind of for the chemically treated one-step processing by combination of developing and fixing solution of tooth section X-ray film.
Background technology
As everyone knows, tooth section X-ray film is identical with other silver halide photographic films, and its chemically treated general technology process is for developing--stop showing (stop on the one hand developing, avoid on the other hand developer solution to pollute stop bath)--photographic fixing--washing.And the silver halide photographic films chemical treatment will be developed and photographic fixing is combined in the solution, because developer and fixer is present in the solution simultaneously, generally speaking, will inevitably feeling of loss luminosity when the film chemical treatment, contrast and maximal density.Development along with the developer technology, in the one-step processing by combination of developing and fixing solution developer from Mitouer/p-dihydroxy-benzene combination proceeds to phenidone/p-dihydroxy-benzene combination, make one-step processing by combination of developing and fixing solution have high activity and short induction period, substantially realized being developed in photographic fixing and just can finish before beginning, for the practical application of one-step processing by combination of developing and fixing solution provides condition.
Yet active for obtaining maximum development in one-step processing by combination of developing and fixing solution, concentration of developer and pH value must be very high, and this must make the photographic fog of film significantly rise.Press 24-2D one-step processing by combination of developing and fixing prescription, solution composition is anhydrous sodium sulfite, p-dihydroxy-benzene, phenidone, potassium bromide, benzotriazole, formaldehyde, NaOH, sodium thiosulfate.This solution has higher light sensitivity, but owing in order to prevent that photographic fog from producing, adopted potassium bromide and benzotriazole, but potassium bromide prolongs development time, and a large amount of benzotriazoles obviously descends maximal density, and the quality of image is descended.
Summary of the invention
The object of the invention is to overcome the shortcoming that above-mentioned one-step processing by combination of developing and fixing solution exists, provide that a kind of configuration is simple, easy operating, storage life is long, the egative film sharpness is high, contrast is good, fog density prevents, is specially adapted to the chemically treated one-step processing by combination of developing and fixing solution of professional tooth section's X-ray film.
Main points of the present invention are that the one-step processing by combination of developing and fixing solution that provides is formulated by a certain percentage by materials such as water, anhydrous sodium sulfite, p-dihydroxy-benzene, phenidone, NaOH, sodium thiosulfate and organic antifoggants.Organic antifoggant wherein is 1-phenyl-5-mercapto tetrazole.
Owing to having selected the antifoggant of 1-phenyl-5-mercapto tetrazole as above-mentioned one-step processing by combination of developing and fixing solution, the strongest, the active maximum of suction-operated and consumption is less, suppress photographic fog obviously, less on light sensitivity and maximal density impact.
Embodiment:
As everyone knows, the relative velocity of the development of one-step processing by combination of developing and fixing solution and photographic fixing is different with different films.A kind of development activity of solution and the balance between the photographic fixing activity may be best to certain concrete film.This balance between development and two kinds of reactions of photographic fixing depends on the physics and chemistry characteristic of emulsion.Most important factor is emulsion layer thickness, grain size, coating weight and silver halide character.Specialty tooth section X-ray film has that silver content is high, thick coating, the coating post bake is good, silver halide particle is small and usually adopt the characteristics such as silver bromide emulsion.For the characteristics of above-mentioned film, the present invention has selected to have the phenidone of high activity and short induction period/p-dihydroxy-benzene combination developer, and preferred its proportioning, makes the superadditivity of developer reach optimization; Cooperate the suitable fixer consumption of selection to make between development and the fixing and keep balance; Select the most frequently used anhydrous sodium sulfite protective agent, effectively prevent the caused solution oxide catalytic action of impurity in the sky G﹠W; Select the development accelaration successful, prepare simple NaOH as the development accelerant of this prescription, and adopt higher pH value for obtaining ISO; Since among the present invention the development of solution active strong, the development accelaration condition is violent, thereby selected in the present invention the strongest, the active maximum of suction-operated and consumption is less, suppress photographic fog obviously, the organism 1-phenyl less on light sensitivity and maximal density impact-5-mercapto tetrazole is as the antifoggant of above-mentioned one-step processing by combination of developing and fixing solution.
Implementing compound method of the present invention is: as primary solvent, add anhydrous sodium sulfite, p-dihydroxy-benzene, phenidone (dissolving with ethanol), NaOH, sodium thiosulfate (pentahapto water) and 1-phenyl-5-mercapto tetrazole (dissolving with ethanol) with water.The content of each composition is as follows:
Unit: grams per liter (g/l):
Anhydrous sodium sulfite 20 ~ 75
P-dihydroxy-benzene 15 ~ 40
Phenidone 1 ~ 6
NaOH 6 ~ 25
Sodium thiosulfate (pentahapto water) 75 ~ 250
1-phenyl-5-mercapto tetrazole 0.02 ~ 0.4
Adopt the key technical indexes of this one-step processing by combination of developing and fixing solution to be on (take the X-ray film DNH of tooth section of Fuji type as example)
Light sensitivity S: greater than 1.0
Contrast: greater than 2.50
Fog density: less than 0.30
Maximal density: greater than 3.0
Acidity-basicity ph: 10.5 ~ 12.8
Storage life: greater than 120 days
Process the film consumption: 2 ~ 3 milliliters/sheet (film size 3cm * 4cm)
Characteristics of the present invention are: in the phenidone/p-dihydroxy-benzene that provides, NaOH, 1-phenyl-5-mercapto tetrazole equal size scope, select different proportionings, applicable to the one-step processing by combination of developing and fixing chemical treatment of the professional tooth section X-ray film of different brands prescription.This solution preparation is simple, raw material is easily purchased (being film manufacturing and chemical treatment chemicals commonly used), the chemical treatment consumption is little, can realize that the daylight system of tooth section X-ray film is learned processing, has significant economic benefit.
Claims (2)
1. one kind is used for the chemically treated one-step processing by combination of developing and fixing solution of tooth section X-ray film, comprises developer, protective agent, development accelerant, antifoggant, it is characterized in that having adopted in this solution 1-phenyl-organic antifoggant of 5-mercapto tetrazole.
2. as claimed in claim 1 for the chemically treated one-step processing by combination of developing and fixing solution of tooth section X-ray film; it is characterized in that organic antifoggant 1-phenyl-5-mercapto tetrazole consumption is 20 ~ 400mg/l; the developer phenidone is 1 ~ 6g/l; p-dihydroxy-benzene is 15 ~ 40g/l; the protective agent anhydrous sodium sulfite is 20 ~ 75g/l; development accelerant NaOH is 6 ~ 25g/l, and fixer sodium thiosulfate is 75 ~ 250g/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100632479A CN102955352A (en) | 2012-03-12 | 2012-03-12 | Combined developing and fixing solution for chemical treatment of dental X-ray films |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100632479A CN102955352A (en) | 2012-03-12 | 2012-03-12 | Combined developing and fixing solution for chemical treatment of dental X-ray films |
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| CN102955352A true CN102955352A (en) | 2013-03-06 |
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| CN2012100632479A Pending CN102955352A (en) | 2012-03-12 | 2012-03-12 | Combined developing and fixing solution for chemical treatment of dental X-ray films |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388698A (en) * | 2015-12-24 | 2016-03-09 | 天津美迪亚影像材料有限公司 | No-water stain salt removal agent special for functional industrial radiographic film |
| CN109240037A (en) * | 2018-11-07 | 2019-01-18 | 天津市康华健晔医用材料有限公司 | A kind of aobvious fixing bath liquid of environmental protection |
| CN111045288A (en) * | 2019-12-20 | 2020-04-21 | 乐凯医疗科技有限公司 | Sensitization method of photographic film emulsion and film preparation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503798A (en) * | 2009-01-19 | 2009-08-12 | 江西科技师范学院 | Silver-plated anti-tarnish protective agent composition |
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2012
- 2012-03-12 CN CN2012100632479A patent/CN102955352A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503798A (en) * | 2009-01-19 | 2009-08-12 | 江西科技师范学院 | Silver-plated anti-tarnish protective agent composition |
Non-Patent Citations (2)
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| 张晓凯: "电镜照片实用快速冲洗法", 《电子显微学报》 * |
| 王琦: "显定合一配方", 《感光材料》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388698A (en) * | 2015-12-24 | 2016-03-09 | 天津美迪亚影像材料有限公司 | No-water stain salt removal agent special for functional industrial radiographic film |
| CN109240037A (en) * | 2018-11-07 | 2019-01-18 | 天津市康华健晔医用材料有限公司 | A kind of aobvious fixing bath liquid of environmental protection |
| CN111045288A (en) * | 2019-12-20 | 2020-04-21 | 乐凯医疗科技有限公司 | Sensitization method of photographic film emulsion and film preparation |
| CN111045288B (en) * | 2019-12-20 | 2023-09-19 | 乐凯医疗科技有限公司 | Sensitization method of photographic film emulsion and film preparation |
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Application publication date: 20130306 |