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Photographic silver halide printing medea without clearing agent

A color, recording layer technology, applied in the direction of emulsified silver emulsion, photography, photography process, etc., can solve problems such as loss

Inactive Publication Date: 2001-07-04
EASTMAN KODAK CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Scavengers also limit the inherent chemical efficiency of a photographic system because Dox is lost in the reaction without producing an image dye

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0211] The structure of Invention Example 1 is shown in Table 2 and Table 8. The interlayer separating the photosensitive layer in Embodiment 1 has no scavenger.

[0212] Silver chloride emulsions (>95% Cl) are chemically and spectrally sensitized as follows:

[0213] Blue Sensitive Emulsion (Blue EM-4): The sedimentation of silver halide emulsion is prepared by adding approximately equimolar solutions of silver nitrate and sodium chloride to a well-stirred reaction apparatus containing gelatin peptizer and thioester ripener. Cs 2 Os(NO)Cl 5 Dopants are added in settling. The resulting emulsion contained cubic grains with side lengths of 0.8 µm. The most preferred sensitization condition for this emulsion is to add a colloidal suspension of gold sulfide, raise the temperature to 60°C, and add blue sensitizing dye BSD-2, Lippmann bromide / 1-(3-acetylaminophenyl)- 5-Mercaptotetrazole. In addition, iridium dopant and 1-(3-acetamidophenyl)-5-mercaptotetrazole were added durin...

Embodiment 2

[0219] The structure of Invention Example 2 is shown in Table 2 and Table 9. Inventive Example 2 has the same structure as Inventive Example 1, except that the levels of stabilizers and couplers in the magenta interlayer are increased by a factor of 2 relative to Inventive Example 1.

[0220] Test results

[0221] Expose for 0.4 seconds with a traditional tungsten lamp at 1700 lumens, color temperature 3000K, and filter with Hoya heat absorption. Exposure adjustment is done with small carbon discs in 0-3,0.5 increments. Red light was filtered with a Wratten 70 filter, and a Wratten 99 was added. 3ND filters filter green light, Wratten 48 plus Wratten 2B plus. 8ND filter filters blue light. Develop for 45 seconds using the standard RA4 process.

[0222] light attenuation.

[0223] The exposed and processed coatings were simulated by 5 weeks of 50 Klux sunlight in a controlled light decay chamber. Table 10 shows the change in magenta dye from a starting density of 1.0. S...

- proportion 1

[0315] Pair-Structure of Example 1

[0316] g / m 2Total silver 0.474 Total gelatin 6.835 Layer 1: Blue light sensitive layer Gelatin 1.238 Blue light sensitive silver 0.215 Y-5 0.603 Potassium chloride 0.020 ST-23 0.002 ST-16 0.006 ST-24 0.000 SF-1 0.102 ST-6 0.104 ST-7 0.035 Triethyl citrate 0.264 Layer 2: Yellow dye forming interlayer (YDI) Gelatin 0.775 Y-5 0.022 S-2 0.010 SF-1 0.012 UV-1 0.028 UV-2 0.161 S-10 0.063 Layer 3: Magenta dye forming Bottom middle layer (MDBI) gelatin 0.700 M-7 0.011 S-2 0.108 ST-21 0.023 ST-8 0.008 ST-22 behenyl phthalate 0.005 SF-1 0.015 layer 4: green photosensitive layer gelatin 0.753 Green light-sensitive silver 0.086 M-7 0.194 S-2 0.069 Behenyl phthalate 0.005 ST-21 0.148 ST-8 0.052 ST-22 0.492 Potassium Chloride 0.020 ST-24 1.615E-04 Layer 5: Formation of Magenta Dye Upper Intermediate Layer (MDTI) Gelatin 0.700 M-7 0.011 S-2 0.108 ST-21 0.023 ST-8 0.008 ST-22 Behenyl Phthalate 0.005 SF-1 0.015 La...

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PUM

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Abstract

The invention relates to a multilayer photographic element comprising a reflective support wherein the color record 1 adjacent to the support comprises at least one light sensitive layer and a non-light sensitive dye-forming interlayer; and wherein color record 2 above said color record 1 comprises at least one light sensitive layer and at least two non-light sensitive dye-forming interlayers and wherein color record 3 comprises at least one light sensitive layer and a non-light sensitive dye-forming interlayer; an optional UV dye containing interlayer and a top overcoat; and wherein each interlayer is completely or substantially scavenger free, silver halide grains comprising greater than 90% silver chloride, and wherein the reciprocity characteristics of the silver halide grains are such that for a separation exposure of 1 microsecond and 0.4 sec, each color record develops to a density of at least 2.0 within a log exposure range of 1.2 or less relative to the exposure point producing a density 0.04 above Dmin.

Description

field of invention [0001] This invention relates to photographic silver halide media, and more particularly to multilayer coating structures that provide improved storage and increase the efficiency of silver for digital exposure. Background of the invention [0002] Continued trust in digital printing of color papers has created a need for a commodity color paper that should be suitable for negative film work equipment as well as digital exposure equipment. In order for a photographic paper to be photocopied correctly, it is critical to utilize the shape of the negative curve of the color photographic paper. When working digitally on photographic paper (direct printing), the shape of the curves can be adjusted to some extent electrically, so there is a greater degree of freedom than with color negative film working systems. Ideally, a color photographic paper that adequately maintains the tonal range from conventional negative photographic exposure times to sub-microsecond...

Claims

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Application Information

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IPC IPC(8): G03C7/20G03C1/035G03C7/18G03C7/30G03C7/392
CPCG03C7/3029G03C7/3041
Inventor M·R·罗伯茨G·J·麦斯维尼A·D·坎普
Owner EASTMAN KODAK CO
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