CN101859062A - Photographic paper base for double-sided imaging and double-sided sensitive color photographic paper containing same - Google Patents
Photographic paper base for double-sided imaging and double-sided sensitive color photographic paper containing same Download PDFInfo
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- CN101859062A CN101859062A CN 201010185390 CN201010185390A CN101859062A CN 101859062 A CN101859062 A CN 101859062A CN 201010185390 CN201010185390 CN 201010185390 CN 201010185390 A CN201010185390 A CN 201010185390A CN 101859062 A CN101859062 A CN 101859062A
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Abstract
The invention discloses a photographic paper base for double-sided imaging and double-sided sensitive color photographic paper containing the same. The photographic paper base comprises a piece of photographic base paper, a polymer layer and a contact layer, wherein a light blocking layer is arranged between the photographic base paper and the polymer layer; and a second light blocking layer, a second polymer layer and a second contact layer symmetrical with the light blocking layer, the polymer layer and the contact layer are arranged on the other surface of the photographic base paper. The photographic paper base has good light blocking effect, and can effectively eliminate negative interference images caused by light transmission during double-sided imaging without introducing an independent light blocking layer and an independent blocking layer. The double-sided sensitive silver halide color photographic paper adopting the photographic paper base provided by the invention can be fully adaptive to the exposure in a range of 10 to 7-102 seconds; and the obtained double-sided images have rich colors, wide color gamut, rich image levels and high definition.
Description
Technical field
The present invention relates to a kind of photographic material, particularly a kind of double-face imaging is with the photograph paper substrate and contain the double-face light sensation colour photographic paper of this paper substrate.
Background technology
Traditional single face light sensation colour photographic paper can only simultaneously expose at printing paper, form the single face image, reverse side does not have image, can only be contained in photo frame or photograph album the inside single face like this appreciates, limited the usable range of printing paper virtually as image-carrier, reduce the utilization factor of support, increased manufacturing cost.In recent years, be a dark horse based on the digital short run printed on both sides of digital printed and inkjet printing, market capacity enlarges rapidly.The printed on both sides of numeral short slab can bring the consumer double graph text information on limited flat carrier, improved efficient to a certain extent, satisfied the demand of consumer's personalization, it is widely used in aspects such as business card, personalized desk calendar, menu, auction room's sample volume, hotel sample board, invitation card, work card, trade promotion promotional pamphlet.But digital short run printed on both sides exists color few, and colour gamut is narrow, and image does not have level, poor definition, and the delivery cycle is long, the problem that cost is high relatively.Though advantages such as color is saturated, colour gamut is wide, image level is abundant, high definition, efficient height, technology maturation that traditional light-sensitive silver halide colour paper has can't realize the double-face imaging function.
The patent No. is that the Chinese utility model patent of ZL200520023024.5 discloses a kind of laser film processor of double-sided exposure and the double-sided light sensitive paper of use thereof, its exposing unit is provided with the laser explosure device that 2 symmetries are installed in the both sides up and down of exposure region, the laser explosure device carries out exposure image respectively to the duplex paper two sides under the sweep signal control of circuit control unit output, printing paper is finished through the flushing unit and is enlarged and print, thereby realizes double-face imaging.The duplex paper of describing in this patent comprises paper substrate, first photographic layer and first protective seam, and it adopts the colour paper manufacturing technology of generally acknowledging to be symmetrical arranged second photographic layer and second protective seam at the another side of paper substrate.Owing to adopt double-sided exposure, when first photographic layer exposes, though paper substrate has certain resistance light action, light sees through paper substrate arrival another side photographic layer but still have greatly, make the second photographic layer sensitization that this should sensitization, produce the negative interference image, rise as Fog density, light sensitivity descends, and seriously reduces final picture quality.
Do not produce the negative interference image in order to realize the double-sided light sensitive imaging, application number is that 200810079876.4 Chinese invention patent and application number are that 200820154048.8 Chinese utility model patent discloses a kind of double-face light sensation colour photographic paper respectively, this duplex paper is introduced independently shading layer between support and photosensitive emulsion, as colloidal state silver layer, silica aerogel layer, anti-halo dye layer, the introducing of shading layer has solved the problems referred to above preferably.There are the following problems but the introducing of above-mentioned coating makes duplex paper: 1, make the whiteness of duplex paper that the trend of deterioration is arranged, reduce the quality of image of printing paper; 2, there is certain limitation in the resistance light effect of shading layer, and especially light penetrates easily and forms the negative interference image under heavy exposure conditions such as laser explosure; 3, increased the production difficulty and the manufacturing cost of duplex paper, made processing technology complicated simultaneously.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of double-face imaging photograph paper substrate, and it is good that himself hinders light effect, need not introduce independently shading layer and barrier layer again, the negative interference image that causes because of light penetration in the time of just effectively eliminating double-face imaging.
Another technical matters that the present invention will solve provides that a kind of color is saturated, colour gamut is wide, image level is abundant, sharpness is high, efficient is high, the double-face light sensation colour photographic paper with special-effect.
For solving the problems of the technologies described above, the technical scheme that the present invention takes is:
A kind of double-face imaging photograph paper substrate, it comprises asbestos base paper, polymeric layer and contact layer, after the improvement, one shading layer is set between asbestos base paper and polymeric layer, is provided with second shading layer, the second polymer layer, second contact layer with above-mentioned shading layer, polymeric layer, contact layer symmetric arrangement at the another side of asbestos base paper.
A kind of preferred version, described shading layer can be metal level, metal oxide layer or inorganic oxide layer.
A kind of preferred version, described shading layer contains the combination of following one or more materials: aluminium, nickel, gold, silver, steel, zinc, copper, tin, metal alloy, aluminium oxide, iron oxide, titanium dioxide, silicon dioxide or silicon nitride.
A kind of double-face light sensation colour photographic paper, it is that one side at described photograph paper substrate is provided with first photographic layer and first protective seam, the another side of photograph paper substrate be symmetrical arranged second photographic layer and second protective seam.
Described photographic layer by respectively to three layers of silver halide of three kinds of coloured light sensitization of red, green, blue and corresponding colour coupler evenly coating form.
Traditional two-sided paper substrate is to scribble polymeric layer in the both sides of asbestos base paper, the polymeric layer both sides scribble contact layer again, add part titania in the polymeric layer in order to adjust the tone of paper substrate, also played simultaneously and partly hindered light action, but its resistance light effect far is not enough to guarantee.
When traditional single face printing paper exposed, light was through arriving behind the sensitive emulsion layer on the paper substrate of white, and wherein a part of light sees through paper substrate, and another part light is the reflected back emulsion layer again, thereby has improved the photosensitive property of product.Because double-sided light sensitive silver-halide color printing paper two sides all scribbles emulsion, single face when exposure,, but still have that part light sees through paper substrate and the photographic layer sensitization that causes another side though traditional two-sided paper substrate can the blocking portion light splitter, form interference images, the photographic property of product is had a negative impact.Therefore, for duplex paper, must stop light to see through paper substrate.
For addressing the above problem, known method is: stop light to see through paper substrate by add the resistance stimulative substance between photographic layer and paper substrate.Common resistance stimulative substance, as collargol, it can produce certain density, can access and hinder light effect preferably, but bring the following negative effect easily when using collargol as the resistance stimulative substance: in the preparation process of collargol in order to make silver ion fully be reduced into simple substance silver, often need to add excessive reductive agent,, still have a spot of reductive agent to remain in the collargol although remove by repeatedly washing with a large amount of water in the preparation later stage.The reductive agent that remains in the collargol has good water-solubility, therefore is very easy to the string layer, contacts with adjacent emulsion layer, causes photographic fog to rise, and influences the photographic property of product.Simultaneously the introducing of collargol increases the silver content in the coating greatly, the processing technology that colour paper is general float surely that power can't make it to remove fully, cause that to float silver not saturating, minimum density is risen, had a strong impact on the whiteness and the quality of image of photograph, therefore must strengthen the ability of bleaching; If improve the power surely of floating by prolonging process time, development time also will prolong simultaneously, makes the overdevelop of printing paper, and the quality of image can't guarantee, and also reduce the slice efficient of enlargement of color photos machine virtually; If improve by the concentration that improves bleach-fixing liquid and to float power surely, improve the consumption of bleach-fixing liquid, and caused the poor stability of bleach-fixing liquid easily, change the frequency and increase, improved the cost of manufacture of photograph.In addition, collargol is used as the resistance stimulative substance realizes hindering the light function, can improve the manufacturing cost of product greatly, and numerous influence factors causes the density fluctuation of collargol to strengthen easily in the preparation process of collargol, cause the undulatory property of resistance light effect big.
In addition, can also in shading layer, introduce the combination of one or more the non-silver resistance stimulative substances in dyestuff, the carbon black, the character of utilizing its good water-solubility or decolouring easily under alkali condition is decoloured in the development process of printing paper, does not influence the whiteness of product.But above-mentioned substance is owing to have water-soluble easy string layer, although taked certain anti-string layer measure, but still have part dyestuff etc. to go here and there contiguous emulsion layer, the photographic property that has suppressed emulsion layer, especially to the sensitivity of light, when the exposure of duplex paper, must could obtain three desirable color densities, reduce the sharpness of image so virtually by strengthening exposure.
Therefore for solving the defective that known technology exists, double-face light sensation colour photographic paper provided by the invention has been cast aside traditional resistance optical tech, adopted a kind of new double-face imaging photograph paper substrate, this paper substrate has been introduced shading layer between asbestos base paper and polymeric layer, and the shading layer of introducing mainly is the purpose that reaches resistance light by the mode that will reflect back through the light of emulsion layer.
The present invention mainly is by increase the shading layer that one deck at least contains reflecting material on asbestos base paper, the part light that makes the exposure back see through sensitive emulsion layer arrives shading layer back reflection lactifuge layer and prevents to see through the photographic layer of paper substrate to another side, the light that reflects back simultaneously can improve the photosensitive property of product to the emulsion layer re-expose.
Among the present invention, shading layer in the paper substrate can be metal level, metal oxide layer or inorganic oxide layer, and shading layer contains the combination of following one or more materials: metal oxide or mineral compounds such as silicon dioxide, silicon nitride such as aluminium, nickel, gold, silver, steel, zinc, copper, tin, metal alloy, aluminium oxide, iron oxide, titanium dioxide.
Above-mentioned shading layer can be realized by modes such as vacuum coating mode, various coating method, direct vapour deposition method, transfer vapour deposition methods.
Polymeric layer among the present invention mainly is the water proofing property that improves paper substrate, improves the tone of paper substrate, improves the opacity of paper substrate, it can be contain PE resin, white masterbatch, color masterbatch coating.
Contact layer among the present invention mainly is the viscosity fastness that improves paper substrate and sensitive emulsion layer paper substrate, prevent that sensitive emulsion layer from splitting away off in the washing processing process, it can be the coating that contains the potpourri of gelatin, resin or gelatin and resin, can also contain auxiliary agents such as antistatic agent, anti blocking agent, reduce the static of paper substrate, prevent paper substrate because the two sides directly contacts and cause adhesion.
Double-face imaging provided by the invention can adopt following preparation method with the photograph paper substrate, but is not limited thereto.
Adopt direct vapour deposition method or shift vapour deposition method, earlier the polyester of drum or polyacrylic film are inserted in the coating machine and bleed, when treating that vacuum tightness reaches production requirement, the balanced high pure metal silk of carrying, tinsel is evaporated to atom under the superhigh temperature effect, stick on the film, after the water cooled rolls cooling, condense into fine and closely woven bright metal film, and then metal film is transferred to a side of body paper by tackifier, at the compound same metal film of the opposite side of body paper, at last plastic sheeting is peeled off coated polymeric layer on metal film with quadrat method, on polymeric layer, be coated with contact layer, obtain two-sided paper substrate.
Photographic layer of the present invention by respectively to three layers of silver halide of three kinds of coloured light sensitization of red, green, blue and corresponding colour coupler evenly coating form, the redgreenblue photosensitive silver halide emulsion that uses all adopts two emulsion process of annotating well known in the art to prepare, and adopts process for increasing sensitivity well known in the art to carry out chemical sensitization and spectral sensitization.
The three look colour couplers, the anti-fading agent that are adopted among the present invention, antistain agent, ultraviolet absorber and organic anti material are compound well known in the art, and adopt technical method well known in the art to be scattered in the aqueous gelatin solution.
Novel two-sided Photoactive silver-halide colour paper provided by the invention prepares by following method:
Adopt direct vapour deposition method or shift vapour deposition method, earlier the polyester of drum or polyacrylic film are inserted in the coating machine and bleed, when treating that vacuum tightness reaches production requirement, the balanced high pure metal silk of carrying, tinsel is evaporated to atom under the superhigh temperature effect, stick on the film, after the water cooled rolls cooling, condense into fine and closely woven bright metal film, and then metal film is transferred to a side of body paper by tackifier, at the compound same metal film of the opposite side of body paper, at last plastic sheeting is peeled off coated polymeric layer on metal film with quadrat method, on polymeric layer, be coated with contact layer, obtain two-sided paper substrate 11.
Prepare redgreenblue photographic layer and protective seam respectively according to the known manufacturing technology of colour paper again.Adopt the extrusion coated mode; earlier three color sensation photospheres and protective seam once are uniformly coated on the two-sided paper substrate that contains shading layer that has prepared; after the condensation drying is finished; equally at the opposite side of two-sided paper substrate according to identical method evenly photosensitive coated layer and protective seam successively, obtain double-sided light sensitive silver-halide color printing paper after the condensation drying.
Compared with prior art, double-face imaging provided by the invention photograph paper substrate, it is good that himself hinders light effect, need not introduce independently shading layer and barrier layer again, the negative interference image that causes because of light penetration in the time of just effectively eliminating double-face imaging; Adopt the double-sided light sensitive silver-halide color printing paper of photograph paper substrate provided by the invention to adapt to 10 fully
-7～10
2Expose in the scope second, and the two-sided colors of image that obtains is abundant, and colour gamut is wide, and image level is abundant, the sharpness height.
Description of drawings
Fig. 1 is the structural representation of double-face imaging of the present invention with the photograph paper substrate;
Fig. 2 is the structural representation of double-face light sensation colour photographic paper of the present invention.
Each label list is shown among the figure: 1, asbestos base paper; 2, polymeric layer; 3, contact layer; 4, shading layer; 5, second shading layer; 6, the second polymer layer; 7, second contact layer; 11, photograph paper substrate; 12, first photographic layer; 13, first protective seam; 14, second photographic layer; 15, second protective seam.
Embodiment
The invention will be further described below by embodiment, but be not limited thereto.
The preparation of light sensitive layer of the present invention adopts the colour paper technique known to implement, and is specific as follows:
Ground floor (the blue layer of sense) coating weight (g/m2)
Blue-sensitive emulsion silver 0.25
Gelatin 1.20
Yellow colour former D1 0.43
Image light stabilizer F1 0.10
Solvent R-1 0.30
Solvent R-2 0.20
The second layer (interlayer)
Gelatin 0.85
Anti-pollutant KB-1 0.09
Solvent R-1 0.06
Solvent R-3 0.03;
The 3rd layer (green layer)
Green-sensitive emulsion silver 0.10
Gelatin 1.00
Product look colour coupler E1 0.25
Image light stabilizer F1 0.20
Solvent R-1 0.10
Solvent R-4 0.05
The 4th layer (the ultraviolet absorber layer 1.)
Gelatin 0.80
Anti-pollutant KB-1 0.10;
Ultraviolet absorber UV-1 0.20
Ultraviolet absorber UV-2 0.08
Solvent R-1 0.15
Solvent R-3 0.03
Solvent R-4 0.12;
Layer 5 (sense red beds)
Magenta-sensitive emulsion silver 0.17
Gelatin 0.90
Cyan coupler B1 0.37
Ultraviolet absorber UV-1 0.10
Solvent R-1 0.25
Solvent R-3 0.10
Layer 6 (the ultraviolet absorber layer 2.)
Gelatin 0.55
Anti-pollutant KB-1 0.03
Ultraviolet absorber UV-1 0.16
Ultraviolet absorber UV-2 0.04
Solvent R-1 0.09
Solvent R-3 0.02
Solvent R-4 0.05;
Layer 7 (sealer)
Gelatin 0.80
Surfactant J-1 0.22
Hardener H-1 0.12;
Adjust coating weight, adopt the extrusion coated mode, three color sensation photospheres and protective seam are uniformly coated on successively a side of novel two-sided paper substrate; After the condensation drying is finished, evenly be coated with three color sensation photosphere and protective seams successively according to identical method, obtain double-sided light sensitive silver-halide color printing paper print after the condensation drying at the opposite side of novel two-sided paper substrate.
After the print that obtains cut into a certain amount of strip by standard, dark packing is put into hot and humid case, and (65 ℃ of temperature are deposited in the humidity 80% after 30 minutes and are taken out, and expose on known exposure sources, according to known RA-4 processing technology flushing, test its photographic property and standard specimen basically identical.Specifically see attached list.
Being prepared as follows of photograph paper substrate:
Adopt and shift the vacuum evaporation coating embrane method, 1.3 * 10
-2～1.3 * 10
-3Heated high-purity aluminium under the vacuum environment of Pa, aluminium is evaporated at short notice, aluminium wire is evaporated to atom under 1400 ℃ of high temperature actions, be deposited on the resin film, after the water cooled rolls cooling, condense into fine and closely woven bright aluminium film, control the thickness of film forming by adjusting the vacuum-deposited time, and then the aluminium film is shifted a side that is compound to asbestos base paper by tackifier get on,, at last resin film is peeled off at the compound same aluminium film of the opposite side of asbestos base paper with quadrat method.
On compound good two sides aluminium film, by extruding particulate resins, white masterbatch, a certain proportion of potpourri of color masterbatch case are processed into molten mass respectively with the heating and pressurizing effect, make it to form fused films by the die head effect again, cool off through pressing again, form first, second polymeric layer, on polymeric layer, adopt the print roll coating mode to be coated with the contact layer that contains photographic gelatin, surfactant, antistatic agent, hardener and other auxiliary agents respectively, form first, second contact layer.Finish the preparation of novel two-sided paper substrate.
Adopt the extrusion coated mode, earlier three color sensation photospheres and protective seam once are uniformly coated on the two-sided paper substrate support that contains shading layer that has prepared the condensation drying.Equally at the opposite side of two-sided paper substrate support according to identical method evenly photosensitive coated layer and protective seam successively, obtain double-sided light sensitive silver-halide color printing paper print after the condensation drying.
Utilize the magnetron sputtering embrane method, 1.3 * 10
-1Charge into nitrogen in the vacuum about Pa, and at plastic basis material (anode, as polyester film) and metal targets (negative electrode, as metallic tin) between add high voltage direct current, the electron excitation inert gas of discharge generation produces plasma, and plasma hits two with the atom of metal targets sn and is deposited on and forms the tin metal film on the resin film, control the thickness of film forming by adjusting sedimentation time, the tin metal film is transferred on the side of asbestos base paper by the adhesive that is fit to; Resin film is peeled off, used the same method again and the tin metal film is transferred to the opposite side of asbestos base paper.
On compound good two sides tin film, by extruding particulate resins, white masterbatch, a certain proportion of potpourri of color masterbatch case are processed into molten mass respectively with the heating and pressurizing effect, make it to form fused films by the die head effect again, cool off through pressing again, form first, second polymeric layer, on polymeric layer, adopt the print roll coating mode to be coated with the contact layer that contains photographic gelatin, surfactant, antistatic agent, hardener and other auxiliary agents respectively, form first, second contact layer.Finish the preparation of novel two-sided paper substrate.
Adopt the extrusion coated mode, earlier three color sensation photospheres and protective seam once are uniformly coated on the two-sided paper substrate support that contains shading layer that has prepared the condensation drying.Equally at the opposite side of two-sided paper substrate support according to identical method evenly photosensitive coated layer and protective seam successively, obtain double-sided light sensitive silver-halide color printing paper print after the condensation drying.
Adopt and shift the vacuum evaporation coating embrane method, 1.3 * 10
-2～1.3 * 10
-3Heat titania under the vacuum environment of Pa, feed an amount of nitrogen at reaction chamber simultaneously, make titania be evaporated to molecule at short notice, be deposited on the resin film, after water cooled rolls cooling, condense into fine and closely woven titanium dioxide film, adjust the thickness of film by the time of adjusting vacuum evaporation deposition, and then the side that titanium dioxide film is transferred to body paper by tackifier gets on,, at last resin film is peeled off at the compound same titanium dioxide film of the opposite side of body paper with quadrat method.
On compound good two sides titanium dioxide film, by extruding particulate resins, white masterbatch, a certain proportion of potpourri of color masterbatch case are processed into molten mass respectively with the heating and pressurizing effect, make it to form fused films by the die head effect again, cool off through pressing again, form first, second polymeric layer, on polymeric layer, adopt the print roll coating mode to be coated with the contact layer that contains photographic gelatin, surfactant, antistatic agent, hardener and other auxiliary agents respectively, form first, second contact layer.Finish the preparation of novel two-sided paper substrate.
Adopt the extrusion coated mode, earlier three color sensation photospheres and protective seam once are uniformly coated on the two-sided paper substrate support that contains shading layer that has prepared the condensation drying.Equally at the opposite side of two-sided paper substrate support according to identical method evenly photosensitive coated layer and protective seam successively, obtain double-sided light sensitive silver-halide color printing paper print after the condensation drying.
The subordinate list photographic property
In the subordinate list:
Minimum density is that exposure is 0 o'clock a colour density, and light sensitivity is to make the inverse of colour density than high 0.6 the necessary exposure of minimum density, and is shown as a relative value, and the light sensitivity of getting standard specimen is 100; Contrast is that to make colour density be the logarithm of 0.7 required exposure amount and to make colour density be difference between the logarithm of 1.7 required exposure amounts, and the contrast of getting standard specimen is 40; Maximal density be colour density with this moment required exposure amount logarithm differential value be less than or equal to 0.05 o'clock colour density, the maximal density of getting standard specimen is 2.00.
By data in the table as can be seen, the double-sided light sensitive printing paper that adopts the present invention to make, photographic property and single face printing paper basically identical adapt to double-sided exposure enlargement of color photos machine, and the colors of image that obtains is abundant, and colour gamut is wide, and image level is abundant, the sharpness height.
Claims (5)
1. double-face imaging photograph paper substrate, comprise asbestos base paper (1), polymeric layer (2) and contact layer (3), it is characterized in that, between asbestos base paper (1) and polymeric layer (2), a shading layer (4) is set, is provided with and above-mentioned shading layer (4), polymeric layer (2), second shading layer (5) of contact layer (3) symmetric arrangement, the second polymer layer (6), second contact layer (7) at the another side of asbestos base paper (1).
2. double-face imaging photograph paper substrate according to claim 1 is characterized in that: described shading layer can be metal level, metal oxide layer or inorganic oxide layer.
3. double-face imaging photograph paper substrate according to claim 3 is characterized in that: it is the combination of following one or more materials that institute's shading layer contains: aluminium, nickel, gold, silver, steel, zinc, copper, tin, metal alloy, aluminium oxide, iron oxide, titanium dioxide, silicon dioxide or silicon nitride.
4. double-face light sensation colour photographic paper that contains just like claim 1,2 or 3 described photograph paper substrates; it is characterized in that; one side at described photograph paper substrate (11) is provided with first photographic layer (12) and first protective seam (13), the another side of photograph paper substrate (11) be symmetrical arranged second photographic layer (14) and second protective seam (15).
5. double-sided light sensitive silver-halide color printing paper according to claim 4 is characterized in that, described photographic layer by respectively to three layers of silver halide of three kinds of coloured light sensitization of red, green, blue and corresponding colour coupler evenly coating form.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101853906A CN101859062B (en) | 2010-05-28 | 2010-05-28 | Photographic paper base for double-sided imaging and double-sided sensitive color photographic paper containing same |
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|---|---|---|---|
| CN2010101853906A CN101859062B (en) | 2010-05-28 | 2010-05-28 | Photographic paper base for double-sided imaging and double-sided sensitive color photographic paper containing same |
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| CN101859062B CN101859062B (en) | 2012-05-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004391A (en) * | 2010-10-25 | 2011-04-06 | 中国乐凯胶片集团公司 | Plastic coated paper base for double-sided imaging |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1048977A1 (en) * | 1999-04-26 | 2000-11-02 | Eastman Kodak Company | Base enhanced digital photographic elements |
| CN1661470A (en) * | 2004-02-24 | 2005-08-31 | 中国乐凯胶片集团公司 | Silver halide type color photographic paper |
| CN101414113A (en) * | 2008-12-02 | 2009-04-22 | 中国乐凯胶片集团公司 | Double-face light sensation colour photographic paper |
| WO2009152719A1 (en) * | 2008-06-16 | 2009-12-23 | Hou Feng | Double-side photosensitive color photographic paper and manufacturing method of the same |
| CN101699349A (en) * | 2009-10-26 | 2010-04-28 | 汕头乐凯胶片有限公司 | Sensitive photographic material |
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2010
- 2010-05-28 CN CN2010101853906A patent/CN101859062B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1048977A1 (en) * | 1999-04-26 | 2000-11-02 | Eastman Kodak Company | Base enhanced digital photographic elements |
| CN1661470A (en) * | 2004-02-24 | 2005-08-31 | 中国乐凯胶片集团公司 | Silver halide type color photographic paper |
| WO2009152719A1 (en) * | 2008-06-16 | 2009-12-23 | Hou Feng | Double-side photosensitive color photographic paper and manufacturing method of the same |
| CN101414113A (en) * | 2008-12-02 | 2009-04-22 | 中国乐凯胶片集团公司 | Double-face light sensation colour photographic paper |
| CN101699349A (en) * | 2009-10-26 | 2010-04-28 | 汕头乐凯胶片有限公司 | Sensitive photographic material |
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| CN102004391A (en) * | 2010-10-25 | 2011-04-06 | 中国乐凯胶片集团公司 | Plastic coated paper base for double-sided imaging |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA LUCKY GROUP CORPORATION Free format text: FORMER NAME: CHINESE LEKAI FILM GROUP CO |
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| CP03 | Change of name, title or address |
Address after: South Street, New District Hebei city of Baoding province Chinese lucky number 6 Patentee after: China Lucky Group Corporation Patentee after: Lucky Film Co., Ltd. Patentee after: Shantou Lucky Film Co.,Ltd. Address before: 071054 Kennan street, Hebei, Baoding, No. 6 Patentee before: Chinese Lekai Film Group Co Patentee before: Lucky Film Co., Ltd. Patentee before: Shantou Lucky Film Co.,Ltd. |