CN100585487C - Material for increasing absorptive red light of anti-halo dye and its preparing method - Google Patents
Material for increasing absorptive red light of anti-halo dye and its preparing method Download PDFInfo
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- CN100585487C CN100585487C CN200510107308A CN200510107308A CN100585487C CN 100585487 C CN100585487 C CN 100585487C CN 200510107308 A CN200510107308 A CN 200510107308A CN 200510107308 A CN200510107308 A CN 200510107308A CN 100585487 C CN100585487 C CN 100585487C
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- red light
- halo dye
- absorptive red
- amphoteric surfactant
- halo
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Abstract
The disclosed material for enhancing backing dye to absorb red light is prepared from following raw materials: backing dye of absorbing red light (BD), amphoteric surfactant of containing -NH- structure (AS), and water. According to percent by weight, BD is 0.1 - 0.2 portions, AS is 0.1 - 0.8 portions, and water 90 - 97 portions. The weight ratio between BD and AS is 1 : 4 - 1 : 1. Possessing good effect, the invention reduces dosage of backing dye, but does not weaken effect of non-halation.
Description
Technical field
The present invention relates to a kind of film and preparation method thereof, especially relate to a kind of material that strengthens absorptive red light of anti-halo dye and preparation method thereof.
Background technology
Photosensitive material promotes clearness for recording image more clearly, must use the method for antihalation, as coating antihalation coating.But in the process, antihalation layer or will remove perhaps will become water white transparency, can not influence the use of film.Must the antihalation effect in order to reach, just need to use a certain amount of dyestuff, but the increase of dyestuff makes that the processing soup and the washing water capacity are easily contaminated.In order to solve this contradiction, use suitable anti-halo dye and suitable surfactant, can reach and reduce the anti-halo dye use amount, but not weaken the antihalation effect.
Summary of the invention
Purpose of the present invention just is to provide a kind of can reduce the anti-halo dye consumption, does not weaken simultaneously the material and preparation method thereof of the enhancing absorptive red light of anti-halo dye of antihalation effect.
Purpose of the present invention can realize by following measure:
The present invention adopts following feedstock production to form: the anti-halo dye that comprises absorptive red light with contain-amphoteric surfactant and the water of NH-structure; Wherein by weight: 0.1 part～0.2 part of the anti-halo dye of absorptive red light, contain-0.1 part～0.8 part of the amphoteric surfactant of NH-structure 90 parts～97 parts in water; Weight part ratio between the amphoteric surfactant of the anti-halo dye of absorptive red light and containing-NH-structure is: 1: 4-1: 1.
Raw material also comprises 2 parts-10 parts in gelatin by weight among the present invention, 0.1 part-0.4 part of 0.005 part-0.02 part of fluorochemical surfactant and hardener.The general formula of gelatin is (HOOC-R
1-20-NH-CO)
n-NH
2+, its molecular weight is 50,000 to 300,000.Contain-amphoteric surfactant of NH-structure, it contains in coconut oil base, lauryl, myristyl, the beet base one or more.Contain carbonyl in the anti-halo dye of absorptive red light.Contain-the amphoteric surfactant structure of NH-structure is: RCO-NH-(CH
2)
3-N (CH
3)
2-CH
-COOH.The anti-halo dye of described absorptive red light is 4,4 '-two [1 (4-sulphenyl)-3-methyl-5-pyrazolone]-five methine oxygen cyanines-di-potassiums.
The method that strengthens the absorptive red light of anti-halo dye material for preparing of the present invention: immerse in the normal-temperature distilled water at described gelatin, after 30--60 minute, be warmed to 40 ℃ of-50 ℃ of dissolvings, no matter order then, the anti-halo dye that adds absorptive red light with contain-amphoteric surfactant and the fluorochemical surfactant of NH-structure, add hardener at last, above composition adds with the aqueous solution form or adds with solid form;
Above water-soluble composition is applied on the macromolecule sheet base, as antihalation layer, coiling-resistant layer, the antistatic layer of film; The sheet base can be in dacron chip base, acetate base, cellulose nitrate sheet base, the polyolefin film material one or more; When coating, can adopt dip coating or extrusion coated method, be coated on the sheet base and use through after the dried.
The antihalation layer that preparation method among the present invention the is used for film non-curl backing of holding concurrently can improve the antistatic behaviour of film.The anti-halo dye of absorptive red light with contain-dissolving of the amphoteric surfactant of NH-structure is in the aqueous solution of gelatin, and is contained in the antihalation layer of film.The anti-halo dye 4,4 of absorptive red light '-two [1 (4-sulphenyl)-3-methyl-5-pyrazolone]-five methine oxygen cyanines-di-potassiums.
The present invention since the anti-halo dye that adopts absorptive red light with contain-material and the methods such as amphoteric surfactant of NH-structure, its effect that has can be as follows by data declaration:
Following specimen is the sample that cuts.
The resistance ruddiness density of table one print, beam split extinction coefficient
| D is red | Peak value | |
| The present invention | 0.91 | 1.6 |
| To in the same old way | 0.66 | 0.95 |
| After dyestuff subtracts 30% | 0.65 | 0.93 |
The antistatic property of table two print
The performance measurement part
1, the mensuration of surface resistance
Under standard compliant temperature, humidity, measure with ZC-43 type superelevation resistance tester by GB GB6844-86 " sheet primary surface method for testing resistance ".
2, beam split extinction coefficient
Use the branch absorbance value of ultraviolet spectrophotometer WFZ900-D4 (or 751 spectrophotometers) test film.
3, resistance ruddiness optical density test
Use SCREEN DM-500 densitometer.
Embodiment
The present invention does with detailed description below in conjunction with embodiment:
Embodiment 1, and the present invention adopts following feedstock production to form: the anti-halo dye that comprises absorptive red light with contain-amphoteric surfactant and the water of NH-structure; Wherein by weight: 0.1 part of the anti-halo dye dyestuff of absorptive red light, contain-0.18 part of the amphoteric surfactant of NH-structure 97 parts in water; Weight part ratio between the amphoteric surfactant of the anti-halo dye of absorptive red light and containing-NH-structure is: 1: 4-1: 1.
Raw material also comprises 10 parts in gelatin by weight among the present invention, 0.4 part of 0.02 part of fluorochemical surfactant and hardener.The general formula of gelatin is (HOOC-R
1-20-NH-CO)
n-NH
2+, its molecular weight is 50,000 to 300,000.Contain-amphoteric surfactant of NH-structure, it contains in coconut oil base, lauryl, myristyl, the beet base one or more.Contain carbonyl in the anti-halo dye of absorptive red light.Contain-the amphoteric surfactant structure of NH-structure is: RCO-NH-(CH
2)
3-N (CH
3)
2-CH
-COOH.The anti-halo dye of described absorptive red light can be 4,4 '-two [1 (4-sulphenyl)-3-methyl-5-pyrazolone]-five methine oxygen cyanines-di-potassiums, also can be with other suitable materials.
The method that strengthens the absorptive red light of anti-halo dye material for preparing of the present invention: immerse in the normal-temperature distilled water at described gelatin, after 30 minutes, be warmed to 50 ℃ of dissolvings, no matter order then, the anti-halo dye that adds absorptive red light with contain-amphoteric surfactant and the fluorochemical surfactant of NH-structure, add hardener at last, above composition adds with the aqueous solution form or adds with solid form;
Above water-soluble composition is applied on the macromolecule sheet base, as antihalation layer, coiling-resistant layer, the antistatic layer of film; The sheet base can be in dacron chip base, acetate base, cellulose nitrate sheet base, the polyolefin film material one or more; When coating, can adopt dip coating or extrusion coated method, be coated on the sheet base and use through after the dried.
The antihalation layer that preparation method among the present invention the is used for film non-curl backing of holding concurrently can improve the antistatic behaviour of film.The anti-halo dye of absorptive red light with contain-dissolving of the amphoteric surfactant of NH-structure is in the aqueous solution of gelatin, and is contained in the antihalation layer of film.
Embodiment 2,
The present invention adopts following feedstock production to form: the anti-halo dye that comprises absorptive red light with contain-amphoteric surfactant and the water of NH-structure; Wherein by weight: 0.12 part of the anti-halo dye of absorptive red light, contain-0.2 part of the amphoteric surfactant of NH-structure 92 parts in water; Weight part ratio between the amphoteric surfactant of the anti-halo dye of absorptive red light and containing-NH-structure is: 1: 4-1: 1.
Raw material also comprises 5 parts in gelatin by weight among the present invention, 0.2 part of 0.008 part of fluorochemical surfactant and hardener.The general formula of gelatin is (HOOC-R
1-20-NH-CO)
n-NH
2+, its molecular weight is 50,000 to 300,000.Contain-amphoteric surfactant of NH-structure, it contains in coconut oil base, lauryl, myristyl, the beet base one or more.Contain carbonyl in the anti-halo dye of absorptive red light.Contain-the amphoteric surfactant structure of NH-structure is: RCO-NH-(CH
2)
3-N (CH
3)
2-CH
-COOH.
The method that strengthens the absorptive red light of anti-halo dye material for preparing of the present invention: immerse in the normal-temperature distilled water at described gelatin, after 40 minutes, be warmed to 43 ℃ of dissolvings, no matter order then, the anti-halo dye that adds absorptive red light with contain-amphoteric surfactant and the fluorochemical surfactant of NH-structure, add hardener at last, above composition adds with the aqueous solution form or adds with solid form;
Above water-soluble composition is applied on the macromolecule sheet base, as antihalation layer, coiling-resistant layer, the antistatic layer of film; The sheet base can be in dacron chip base, acetate base, cellulose nitrate sheet base, the polyolefin film material one or more; When coating, can adopt dip coating or extrusion coated method, be coated on the sheet base and use through after the dried.
The antihalation layer that preparation method among the present invention the is used for film non-curl backing of holding concurrently can improve the antistatic behaviour of film.The anti-halo dye of absorptive red light with contain-dissolving of the amphoteric surfactant of NH-structure is in the aqueous solution of gelatin, and is contained in the antihalation layer of film.
Embodiment 3
The present invention adopts following feedstock production to form: the anti-halo dye that comprises absorptive red light with contain-amphoteric surfactant and the water of NH-structure; Wherein by weight: 0.15 part of the anti-halo dye dyestuff of absorptive red light, contain-0.3 part of the amphoteric surfactant of NH-structure 95 parts in water; Weight part ratio between the amphoteric surfactant of the anti-halo dye of absorptive red light and containing-NH-structure is: 1: 4-1: 1.
Raw material also comprises 6 parts in gelatin by weight among the present invention, 0.3 part of 0.01 part of fluorochemical surfactant and hardener.The general formula of gelatin is (HOOC-R
1-20-NH-CO)
n-NH
2+, its molecular weight is 50,000 to 300,000.Contain-amphoteric surfactant of NH-structure, it contains in coconut oil base, lauryl, myristyl, the beet base one or more.Contain carbonyl in the anti-halo dye of absorptive red light.Contain-the amphoteric surfactant structure of NH-structure is: RCO-NH-(CH
2)
3-N (CH
3)
2-CH
-COOH.
The method that strengthens the absorptive red light of anti-halo dye material for preparing of the present invention: immerse in the normal-temperature distilled water at described gelatin, after 45 minutes, be warmed to 45 ℃ of dissolvings, no matter order then, the anti-halo dye that adds absorptive red light with contain-amphoteric surfactant and the fluorochemical surfactant of NH-structure, add hardener at last, above composition adds with the aqueous solution form or adds with solid form;
Above water-soluble composition is applied on the macromolecule sheet base, as antihalation layer, coiling-resistant layer, the antistatic layer of film; The sheet base can be in dacron chip base, acetate base, cellulose nitrate sheet base, the polyolefin film material one or more; When coating, can adopt dip coating or extrusion coated method, be coated on the sheet base and use through after the dried.
The antihalation layer that preparation method among the present invention the is used for film non-curl backing of holding concurrently can improve the antistatic behaviour of film.The anti-halo dye of absorptive red light with contain-dissolving of the amphoteric surfactant of NH-structure is in the aqueous solution of gelatin, and is contained in the antihalation layer of film.
Embodiment 4
The present invention adopts following feedstock production to form: the anti-halo dye that comprises absorptive red light with contain-amphoteric surfactant and the water of NH-structure; Wherein by weight: 0.18 part of part of the anti-halo dye dyestuff of absorptive red light, contain-0.6 part of the amphoteric surfactant of NH-structure 96 parts in water; Weight part ratio between the amphoteric surfactant of the anti-halo dye of absorptive red light and containing-NH-structure is: 1: 4-1: 1.
Raw material also comprises 8 parts in gelatin by weight among the present invention, 0.3 part of fluorochemical surfactant 0.015 and hardener.The general formula of gelatin is (HOOC-R
1-20-NH-CO)
n-NH
2+, its molecular weight is 50,000 to 300,000.Contain-amphoteric surfactant of NH-structure, it contains in coconut oil base, lauryl, myristyl, the beet base one or more.Contain carbonyl in the anti-halo dye of absorptive red light.Contain-the amphoteric surfactant structure of NH-structure is: RCO-NH-(CH
2)
3-N (CH
3)
2-CH
-COOH.
The method that strengthens the absorptive red light of anti-halo dye material for preparing of the present invention: immerse in the normal-temperature distilled water at described gelatin, after 50 minutes, be warmed to 48 ℃ of dissolvings, no matter order then, the anti-halo dye that adds absorptive red light with contain-amphoteric surfactant and the fluorochemical surfactant of NH-structure, add hardener at last, above composition adds with the aqueous solution form or adds with solid form;
Above water-soluble composition is applied on the macromolecule sheet base, as antihalation layer, coiling-resistant layer, the antistatic layer of film; The sheet base can be in dacron chip base, acetate base, cellulose nitrate sheet base, the polyolefin film material one or more; When coating, can adopt dip coating or extrusion coated method, be coated on the sheet base and use through after the dried.
The antihalation layer that preparation method among the present invention the is used for film non-curl backing of holding concurrently can improve the antistatic behaviour of film.The anti-halo dye of absorptive red light with contain-dissolving of the amphoteric surfactant of NH-structure is in the aqueous solution of gelatin, and is contained in the antihalation layer of film.。
Embodiment 5
The present invention adopts following feedstock production to form: the anti-halo dye that comprises absorptive red light with contain-amphoteric surfactant and the water of NH-structure; Wherein by weight: 0.2 part of the anti-halo dye dyestuff of absorptive red light, contain-0.8 part of the amphoteric surfactant of NH-structure 97 parts in water; Weight part ratio between the amphoteric surfactant of the anti-halo dye of absorptive red light and containing-NH-structure is: 1: 4-1: 1.
Raw material also comprises 10 parts in gelatin by weight among the present invention, 0.4 part of 0.02 part of fluorochemical surfactant and hardener.The general formula of gelatin is (HOOC-R
1-20-NH-CO)
n-NH
2+, its molecular weight is 50,000 to 300,000.Contain-amphoteric surfactant of NH-structure, it contains in coconut oil base, lauryl, myristyl, the beet base one or more.Contain carbonyl in the anti-halo dye of absorptive red light.Contain-the amphoteric surfactant structure of NH-structure is: RCO-NH-(CH
2)
3-N (CH
3)
2-CH
-COOH.
The method that strengthens the absorptive red light of anti-halo dye material for preparing of the present invention: immerse in the normal-temperature distilled water at described gelatin, after 60 minutes, be warmed to 50 ℃ of dissolvings, no matter order then, the anti-halo dye that adds absorptive red light with contain-amphoteric surfactant and the fluorochemical surfactant of NH-structure, add hardener at last, above composition adds with the aqueous solution form or adds with solid form;
Above water-soluble composition is applied on the macromolecule sheet base, as antihalation layer, coiling-resistant layer, the antistatic layer of film; The sheet base can be in dacron chip base, acetate base, cellulose nitrate sheet base, the polyolefin film material one or more; When coating, can adopt dip coating or extrusion coated method, be coated on the sheet base and use through after the dried.
The present invention prepares antihalation layer that the absorptive red light material preparation method the is used for film non-curl backing of holding concurrently, and can improve the antistatic behaviour of film.The anti-halo dye of absorptive red light with contain-dissolving of the amphoteric surfactant of NH-structure is in the aqueous solution of gelatin, and is contained in the antihalation layer of film.
Embodiment 6
Get 24 gram gelatin and be dipped in 20 ℃-25 ℃ 325 ml distilled waters, soak after 30 minutes, be warming up to 40 ℃ of-50 ℃ of dissolvings.The dyestuff that adds 0.75 gram, 30 milliliters of 5% cocamidopropyl propyl amide amine oxides, 15 milliliters of fluorochemical surfactant 1% aqueous solution, hardener 1 gram.Get liquid composite by 62 milliliters/meter
2Amount coating.The red density of the resistance of print is 0.62, and the peak value of spectral absorption curve is 0.86, and surface resistance is 8.1 * 10
9Europe.
Embodiment 7
Get 24 gram gelatin and be dipped in 20 ℃-25 ℃ 325 ml distilled waters, soak after 30 minutes, be warming up to 40 ℃ of-50 ℃ of dissolvings.The dyestuff that adds 0.75 gram, 30 milliliters of 5% lauryl betaines, 15 milliliters of fluorochemical surfactant 1% aqueous solution, hardener 1 gram.Get liquid composite by 62 milliliters/meter
2Amount coating.The red density of the resistance of print is 0.6, and the peak value of spectral absorption curve is 0.9, and surface resistance is 5.0 * 10
9Europe.
Embodiment 8
Get 24 gram gelatin and be dipped in 20 ℃-25 ℃ 325 ml distilled waters, soak after 30 minutes, be warming up to 40 ℃ of-50 ℃ of dissolvings.The dyestuff that adds 0.75 gram, 30 milliliters of 5% lauryl hydroxyl sulphur betaines, 15 milliliters of fluorochemical surfactant 1% aqueous solution, hardener 1 gram.Get liquid composite by 62 milliliters/meter
2Amount coating.The red density of the resistance of print is 0.65, and the peak value of spectral absorption curve is 0.91, and surface resistance is 2.3 * 10
9Europe.
Embodiment 9
Get 24 gram gelatin and be dipped in 20 ℃-25 ℃ 325 ml distilled waters, soak after 30 minutes, be warming up to 40 ℃ of-50 ℃ of dissolvings.The dyestuff that adds 0.75 gram, 30 milliliters of 5% lauryl amine oxides, 15 milliliters of fluorochemical surfactant 1% aqueous solution, hardener 1 gram.Get liquid composite by 62 milliliters/meter
2Amount coating.The red density of the resistance of print is 0.61, and the peak value of spectral absorption curve is 0.90, and surface resistance is 6.2 * 10
9Europe.
Embodiment 10
Get 24 gram gelatin and be dipped in 20 ℃-25 ℃ 325 ml distilled waters, soak after 30 minutes, be warming up to 40 ℃ of-50 ℃ of dissolvings.The dyestuff that adds 0.75 gram, 30 milliliters of 5% myristyl amine oxides, 15 milliliters of fluorochemical surfactant 1% aqueous solution, hardener 1 gram.Get liquid composite by 62 milliliters/meter
2Amount coating.The red density of the resistance of print is 0.57, and the peak value of spectral absorption curve is 0.86, and surface resistance is 9.2 * 10
9Europe.
Embodiment 11
Get 24 gram gelatin and be dipped in 20 ℃-25 ℃ 325 ml distilled waters, soak after 30 minutes, be warming up to 40 ℃ of-50 ℃ of dissolvings.The dyestuff that adds 0.75 gram, 30 milliliters of 5% lauryl imidazolinium betaines, 15 milliliters of fluorochemical surfactant 1% aqueous solution, hardener 1 gram.Get liquid composite by 62 milliliters/meter
2Amount coating.The red density of the resistance of print is 0.66, and the peak value of spectral absorption curve is 0.99, and surface resistance is 2.2 * 10
9Europe.
Embodiment 12
Get 24 gram gelatin and be dipped in 20 ℃-25 ℃ 325 ml distilled waters, soak after 30 minutes, be warming up to 40 ℃ of-50 ℃ of dissolvings.The dyestuff that adds 0.75 gram, 30 milliliters of 5% coco group imidazoles betaines, 15 milliliters of fluorochemical surfactant 1% aqueous solution, hardener 1 gram.Get liquid composite by 62 milliliters/meter
2Amount coating.The red density of the resistance of print is 0.62, and the peak value of spectral absorption curve is 0.87, and surface resistance is 6.3 * 10
9Europe.
Claims (5)
1, a kind of material that strengthens absorptive red light of anti-halo dye is characterized in that: it adopts following feedstock production to form: the anti-halo dye that comprises absorptive red light with contain-amphoteric surfactant and the water of NH-structure; Wherein by weight: 0.1 part～0.2 part of the anti-halo dye of absorptive red light, contain-0.1 part～0.8 part of the amphoteric surfactant of NH-structure 90 parts～97 parts in water; Weight part ratio between the amphoteric surfactant of the anti-halo dye of absorptive red light and containing-NH-structure is: 1: 4-1: 1; Described raw material also comprises 2 parts-10 parts in gelatin by weight, 0.1 part-0.4 part of 0.005 part-0.02 part of fluorochemical surfactant and hardener; The anti-halo dye of described absorptive red light is 4,4 '-two [1 (4-sulphenyl)-3-methyl-5-pyrazolone]-five methine oxygen cyanines-di-potassiums.
2, the material of enhancing absorptive red light of anti-halo dye according to claim 1 is characterized in that: the general formula of described gelatin is (HOOC-R
1-20-NH-CO)
n-NH
2+, its molecular weight is 50,000 to 300,000.
3, the material of enhancing absorptive red light of anti-halo dye according to claim 1 and 2 is characterized in that: the amphoteric surfactant of described containing-NH-structure, it contains in coconut oil base, lauryl, myristyl, the beet base one or more.
4, the material of enhancing absorptive red light of anti-halo dye according to claim 1 and 2 is characterized in that: the amphoteric surfactant of described containing-NH-structure, and its structure is:
RCO-NH-(CH
2)
3-N(CH
3)
2-CH_COOH。
5, a kind of method for preparing enhancing absorptive red light of anti-halo dye material as claimed in claim 1, it is characterized in that: immerse in the normal-temperature distilled water at described gelatin, after 30--60 minute, be warmed to 40 ℃ of-50 ℃ of dissolvings, no matter order then, the anti-halo dye that adds absorptive red light with contain-amphoteric surfactant and the fluorochemical surfactant of NH-structure, add hardener at last, above composition adds with the aqueous solution form or adds with solid form; The anti-halo dye of described absorptive red light is 4,4 '-two [1 (4-sulphenyl)-3-methyl-5-pyrazolone]-five methine oxygen cyanines-di-potassiums; Wherein by weight: 0.1 part～0.2 part of the anti-halo dye of absorptive red light, contain-0.1 part～0.8 part of the amphoteric surfactant of NH-structure 90 parts～97 parts in water; Weight part ratio between the amphoteric surfactant of the anti-halo dye of absorptive red light and containing-NH-structure is: 1: 4-1: 1; Described raw material also comprises 2 parts-10 parts in gelatin by weight, 0.1 part-0.4 part of 0.005 part-0.02 part of fluorochemical surfactant and hardener;
Above water-soluble composition is applied on the macromolecule sheet base, as antihalation layer, coiling-resistant layer, the antistatic layer of film; The sheet base can be in dacron chip base, acetate base, cellulose nitrate sheet base, the polyolefin film material one or more;
When coating, can adopt dip coating or extrusion coated method, be coated on the sheet base and use through after the dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510107308A CN100585487C (en) | 2005-12-23 | 2005-12-23 | Material for increasing absorptive red light of anti-halo dye and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510107308A CN100585487C (en) | 2005-12-23 | 2005-12-23 | Material for increasing absorptive red light of anti-halo dye and its preparing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1987641A CN1987641A (en) | 2007-06-27 |
| CN100585487C true CN100585487C (en) | 2010-01-27 |
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|---|---|---|---|
| CN200510107308A Expired - Fee Related CN100585487C (en) | 2005-12-23 | 2005-12-23 | Material for increasing absorptive red light of anti-halo dye and its preparing method |
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| CN109100824B (en) * | 2018-09-28 | 2020-11-20 | 朱晓 | Anti-myopia light filtering coating film based on red light filtering |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3591382A (en) * | 1967-06-23 | 1971-07-06 | Eastman Kodak Co | Use of fine grain emulsion with coarse grain emulsion to reduce image spread |
-
2005
- 2005-12-23 CN CN200510107308A patent/CN100585487C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3591382A (en) * | 1967-06-23 | 1971-07-06 | Eastman Kodak Co | Use of fine grain emulsion with coarse grain emulsion to reduce image spread |
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| CN1987641A (en) | 2007-06-27 |
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Owner name: LUCKY HUAGUANG GRAPHICS CO., LTD. Free format text: FORMER NAME: THE SECOND FILM FACTORY OF LUCKY GROUP |
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Address after: 473003 No. 718 Station Road, Henan, Nanyang Patentee after: Lucky Huaguang Graphics Co., Ltd. Address before: 473003 No. 718 Station Road, Henan, Nanyang Patentee before: The Second Film Factory of Lucky Group |
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Granted publication date: 20100127 Termination date: 20151223 |
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