In a kind of negative film reverse developing technique with black-and-white developer and developing technique
The reverse developing technique method that the present invention relates to the black-and-white developer of using in a kind of negative film reverse developing technique and utilize this developer solution to carry out.Specifically a kind of black-and-white developer is provided and sets up a kind of easy negative film reverse developing technique method for the reverse developing technique for preparing color transparency with colour negative.
Along with development of times, photography is just being brought into play more and more important effect in people's daily life in the study and work.From employed material, camera work can be divided into negative film photography and lantern slide photography two big classes.The benefit of negative film photography is by the egative film multiple pictures of can enlarging and print out, propagates and appreciate all very convenient, and the overwhelming majority that our daily life contacted is the negative film photography.Lantern slide is called reversal film again, be characterized in that color is saturated, true to nature, can make a plate by the scanning color separation film easily, make color rendition printed matter true to nature, lantern slide can be shown simultaneously with slide projector and appreciate for many people, because this feature, make lantern slide in scientific research, teaching field has obtained to use very widely.But in the present circumstance, counter-rotating photography also has been subjected to very big restriction, as lacks material supplies, service support etc., and particularly because cost is too high, particularly this important photography of colour reversal film is also very weak to make reversal film.
The purpose of this invention is to provide a kind of easy negative film reverse developing technique, be provided for the special formulation of the developer solution of black-and-white development simultaneously, because this technology is very simple and easy to do, and need not use special utensil and medicine, prepared color transparency tone is saturated, color rendition is true, colour cast is less, can satisfy general appreciation level fully, and can be applicable to the demonstration exhibition, aspects such as teaching and scientific research, and its cost only needs about 1/5th of regular reversal film.
Design concept of the present invention is such, color film, comprise colour negative and colour reversal film, all have by antihalation layer, sense red beds, green layer, Yellow filter layer, the blue layer of sense and similar emulsion structure such as protection and ultraviolet filtering layer, the blue layer of sense wherein contains yellow colour coupler, object to the blue light part after development presents yellow image, and the blue layer of sense is only to sensitive to blue light; Equally, green layer and sense red beds contain magenta and cyan colour coupler respectively, and only to green glow or red light sensitiveness.In colour reversal film, colour coupler in three layers of photosensitive emulsion all is colourless, only after development, demonstrate corresponding color, and in colour negative, in feeling blue layer yellow colour coupler colourless, magenta and cyan colour coupler in its green layer and the sense red beds all are coloured, this is artificial the design for harmful absorption of correcting color egative film, the colour coupler of dyeing makes color negative film have certain brown accent, this brown accent is called Maas gram colour correction mask again, and common colour negative is if process according to the reverse developing technique of routine, because the influence of Maas gram colour correction mask, products obtained therefrom all can have very dark brown accent and in fact can not use.
The main design philosophy of the present invention is by the silver halide relative content in three layers of photosensitive emulsion of the control of black and white developing process first, makes it form to a certain degree colour cast after colour development, and offsets the tone that Maas restrains colour correction mask with this.Specifically because the thiosulfate that is usually used in improving reversal film light sensitivity and transparency and rhodanide two class ag halide solvents are different to the dissolution degree of silver halide in the same feeling chromatograph not, wherein the dissolution degree of the blue layer of thiosulfuric acid salt pair sense is obviously greater than the dissolution degree of feeling red beds, and comparatively speaking, rhodanide is then much bigger to the dissolution degree of sense red beds.Adopt in the black-and-white development provided by the present invention for this reason prescription to add thiosulfate simultaneously and this two classes ag halide solvent of rhodanide is formulated, and the addition weight ratio of two kinds of compounds is a rhodanide: thiosulfate is 2～10: 3～9.Used thiosulfate is sodium, potassium or ammonium salt, and rhodanide is potassium rhodanate or sodium.Concrete black-and-white development formula of liquid such as table 1.
Utilize the black-and-white development prescription of table 1 in the developing technique provided by the present invention, its concrete technological process is as shown in table 2
Table 1 black-and-white development formula of liquid
| Reagent name | Content |
| Deionized water (50 ℃) | 700 milliliters |
| Mitouer | 1.2-3.0 gram |
| Anhydrous sodium sulfite | 60 grams |
| P-dihydroxy-benzene | The 12-25 gram |
| Natrium carbonicum calcinatum | 35 grams |
| Potassium bromide | The 10-30 gram |
| Potassium iodide | 0.01-0.08 gram |
| Potassium rhodanate (or sodium) | The 2-10 gram |
| Five water sodium thiosulfate (or potassium) | The 3-9 gram |
| Add deionized water extremely | 1000 milliliters |
Table 2 negative film reverse developing technique and method of operating
| Preface | Operation steps | Time (branch) | Temperature (℃) | Alr mode |
| 1 | Black-and-white development | ??6-12 | ??21-23 | Follow-up stirring |
| 2 | Washing | ????2 | ??18-28 | Follow-up stirring |
| 3 | Colour development | ??3-8 | ????38 | Follow-up stirring |
| 4 | Blix | ???10 | ????38 | Follow-up stirring |
| 5 | Washing | ???5 | ??18-28 | Follow-up angle |
| 6 | Stable | ???1.5 | ??24-41 | The spacious beginning stirs |
| 7 | Dry | ??????????????2′′℃ |
Utilize black-and-white development formula of liquid provided by the invention and developing technique method, be easy to finish with colour negative in conjunction with the conventional negative film counter-rotating technology of washing and prepare the color transparency flushing process.
Below by embodiment technology of the present invention is given to illustrate further.
At first press table 4 to the given formulated washing fluid of table 7, wherein except that the black-and-white development prescription, used colour developing solution after step 3 reaches in the table 3, bleach-fixing liquid and stabilizing solution etc. all can adopt the treating fluid of any C-41 system or prescription is prepared voluntarily and add the reversal agents potassium borohydride by every liter 0.2 concentration that restrains in colour developing solution according to substituting, but processing time and temperature control should be determined by concrete the experiment.
Film uses Lekai (LUCKY) GBR100 type colour negative, normal exposure.Film is put into developing tank,, can obtain the chromatrope flake products according to listed step of table 3 and method operation.
Table 3 negative film reverse developing technique and method of operating
| Preface | Operation steps | Time (branch) | Temperature (℃) | Mix mode |
| ??1 | Black-and-white development | ??8-10 | ??21-23 | Follow-up stirring |
| ??2 | Washing | ????2 | ??18-28 | Follow-up stirring |
| ??3 | Colour development | ????5 | ????38 | Follow-up stirring |
| ??4 | Blix | ????10 | ????38 | Follow-up stirring |
| ??5 | Washing | ????5 | ??18-28 | Follow-up stirring |
| ??6 | Stable | ????1.5 | ??24-41 | The initial stirring |
| ??7 | Dry | ?????????????24-41℃ |
Table 4 black-and-white development formula of liquid
| Reagent name | Content |
| Deionized water (50 ℃) | 700 milliliters |
| Mitouer | 1.8 gram |
| Anhydrous sodium sulfite | 60 grams |
| P-dihydroxy-benzene | 16 grams |
| Natrium carbonicum calcinatum | 35 grams |
| Potassium bromide | 15 grams |
| Potassium iodide | 0.04 gram |
| Potassium rhodanate (or sodium) | 6 grams |
| Five water sodium thiosulfate (or potassium) | 6 grams |
| Add deionized water extremely | 1000 milliliters |
Table 5 colour development formula of liquid
| Reagent name | Content |
| Deionized water (50 ℃) | 700 milliliters |
| Anhydrous sodium sulfite | 1.2 gram |
| Natrium carbonicum calcinatum | 12.8 gram |
| Potassium bromide | 0.6 gram |
| NaOH | 1.6 gram |
| Sodium bicarbonate | 1.35 gram |
| Borax | 6 grams |
| 6-nitrobenzimidazole nitrate | 0.024 gram |
| CD-4 | 3.2 gram |
| Potassium borohydride | 0.2 gram |
| Add deionized water extremely | 1000 milliliters |
Table 6 blix formula of liquid
| Reagent name | Content |
| Deionized water (50 ℃) | 700 milliliters |
| EDTA ferrisodium salt | 100 grams |
| Anhydrous sodium sulfite | 7 grams |
| ATS (Ammonium thiosulphate) | 100 grams |
| Add deionized water extremely | 1000 milliliters |
Table 7 stabilizing solution prescription
| Reagent name | Content |
| Deionized water (50 ℃) | 700 milliliters |
| Sodium dodecylsulphonate | 0.2 gram |
| Formaldehyde (37% aqueous solution) | 6 grams |
| Add deionized water extremely | 1000 milliliters |
Comparative example 1
The colour negative reverse developing technique and the prescription that are provided by " Photo World " magazine [1995, (4), 15] carry out the work of negative film reverse developing, its technological operation and the black thin prescription that develops first see Table 8 and table 9 shown in.
The negative film reverse developing technique and the method for operating of table 8 comparative example
| Preface | Operation steps | Time (branch) | Temperature (℃) |
| 1 | Black-and-white development for the first time | 8-10 | ?21-23 |
| 2 | Washing | 2 | ?18-28 |
| 3 | Bleaching for the first time | 5 | ?21-23 |
| 4 | Cleaning | 1 | ?21-23 |
| 5 | Washing | 5 | ?18-25 |
| 6 | Exposure for the second time | The 40W daylight lamp, 0.3 meter, every was exposed 30 seconds |
| 7 | Black-and-white development for the second time | 3 | ?19-21 |
| 8 | Washing | 1 | ?18-28 |
| 9 | Photographic fixing (F-5 stop bath) | 5 | ?18-22 |
| 10 | Washing | 10 | ?18-28 |
| 11 | Bleaching for the second time | 5-8 | ?35-39 |
| 12 | Washing " | 10 | ?18-26 |
| 13 | Colour development (C-41 technology) | 3.25 | ?38(±1.5) |
| 14 | Bleaching (C-41 technology) | 6.5 | ?38(±5) |
| 15 | Washing | 3.2 oceanic bonito | ?37.8(±3) |
| 16 | Photographic fixing (C-41 technology) | 6.5 | ?24-40 |
| 17 | Washing | 3.25 | ?37.8(±3) |
| 18 | Stable (C-41 technology) | 1.5 | ?24.41 |
| 19 | Dry | ????24-41℃ |
The black and white of the table 9 comparative example prescription that develops first
| Reagent name | Content |
| Water (50 ℃) | 700 milliliters |
| Mitouer | 2 grams |
| Anhydrous sodium sulfite | 75 grams |
| P-dihydroxy-benzene | 15 grams |
| Natrium carbonicum calcinatum | 32 grams |
| Potassium bromide | 18 grams |
| Potassium rhodanate | 6 grams |
| Add water to | 1000 milliliters |
By above-mentioned example and comparative example, technology provided by the present invention only need be carried out the operation of 2 steps before colour development, need not to prepare other treating fluids the developer solution first except that black and white simultaneously, alleviate workload widely and also reduced simultaneously cost, particularly crucial is the invention provides the black and white of the using two kinds of ag halide solvents simultaneously prescription that develops first, to negative film intrinsic Maas gram colour correction mask proofread and correct to a great extent, make products obtained therefrom better in quality.