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Developer solution, its concentrated composition for silver halide colour photographic materials and treatment method thereof

A color developer and compound technology, applied in the color developer solution, its concentrated composition and processing field for silver halide color photographic materials, can solve the problems of difficulty in enhancing the concentration factor and the volume of the kit

Inactive Publication Date: 2003-03-26
KONICA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at low temperature during storage, a cartridge with a relatively high pH and a relatively high concentration of color developer tends to form deposits, making it difficult to enhance the concentration factor and causing the problem that the cartridge becomes larger

Method used

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  • Developer solution, its concentrated composition for silver halide colour photographic materials and treatment method thereof
  • Developer solution, its concentrated composition for silver halide colour photographic materials and treatment method thereof
  • Developer solution, its concentrated composition for silver halide colour photographic materials and treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] Prepare the following treatment solutions for color photographic paper. Color developer solution Pentasodium diethylenetriaminepentaacetate 3.0g / l Triaminostilbene type brightener 1.0g / l Sodium p-toluenesulfonate 5.0g / l Sodium sulfite 0.4g / l The quantity is shown in Table 1 The general formula (1) compound quantity is as shown in table 1 general formula (2) compound color developing agent (1) 0.02mol / l potassium carbonate 35.0g / lKCl 3.5g / l is used for preparing 1 liter of water

[0126] The pH was adjusted to 10.3 with sulfuric acid or KOH. Put 200 ml of the above developer tank solution into a beaker and immerse 2 / 3 of the rectangular vinyl chloride resin plate into the solution, and after allowing to stand at 40°C for 3-7 days, visually evaluate the precipitation near the liquid interface of the plate of coloring. Water replenishment was performed daily to compensate for evaporation. The results are shown in Table 1. In the table, "total molar concentration" repre...

Embodiment 2

[0135] Tests were conducted similarly to Test Nos. 1-14 or 1-21 in Example 1, provided that the molar amount of the color developer (1) was changed as shown in Table 2. The evaluation was carried out similarly to Example 1 and its results are shown in Table 2.

[0136] Test No.

[0137] As is evident from Table 2, it shows that a color developer concentration of 0.02-0.04 mol / l leads to a further enhanced effect of the present invention.

Embodiment 3

[0139] Tests were carried out similarly to Test No. 1-18, provided that diethylene glycol (referred to as DEG) or polyethylene glycol #600 (referred to as PEG #600) was added as a compound of general formula (3), as shown in Table 3 Show. The evaluation was carried out similarly to Example 1 and its results are shown in Table 3.

[0140] Test No.

[0141] As is evident from Table 3, it shows that the addition of the compound of general formula (3) leads to a significantly enhanced effect of the present invention. In particular, additions of 10-100 g / l have also proven to be preferred.

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PUM

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Abstract

A color developer solution capable of inhibiting precipitation or tar-staining occurring in the processing tank or the roller rack, even when being processed rapidly or at low replenishing rate and a concentrated composition thereof is disclosed, comprising at least one selected from specified N-disubstituted hydroxylamine derivatives and at least one selected from specified N-monosubstituted hydroxylamine derivatives in a molar ratio falling within the range of 1000:1 to 1:1.

Description

field of invention [0001] This invention relates to developer solutions and concentrated compositions thereof for use in silver halide color photographic materials, processes using the same, and in particular to developer solutions for use in silver halide color photographic materials when rapidly or in It is capable of inhibiting sedimentation or tar-staining caused on processing tanks or roll stands when processed at low replenishment rates, even concentrated developer compositions that do not form deposits when dissolved at relatively high concentrations, and how to use it. Background of the invention [0002] In general, to form a color image by processing a silver halide color photographic material, the photographic material is imagewise exposed and developed with a developer solution containing a color developing agent of the p-phenylenediamine type in which the silver halide is reduced to silver and simultaneously oxidizing the color developing ag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03C7/407G03C5/26G03C5/305G03C7/413G03C7/44
CPCG03C5/266G03C7/413G03C7/44
Inventor 山下博
Owner KONICA CORP
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