GB/T 9861-2008Imaging materials -- Photographic film and papers -- Method for determining the resistance of photographic emulsions to wet abrasion (English PDF)

Foreword

This standard is identical with ISO 18914:2002 "Imaging materials --- --- photographic film and paper photographic emulsions wet scratch resistance measurement side Law "(in English).

This standard is equivalent to translate ISO 18914:2002.

For ease of use, this standard does the following editorial changes.

a) "this International Standard" be replaced by "this standard";

b) use a decimal point instead of a decimal comma ",". ",";

c) Delete ISO 18914:2002 Foreword rewrite of the standard "foreword"; the introduction of international standards as a direct translation of the Standard Introduction.

The revised standard and replaces GB/T 9861-1988 "Determination of scratch resistance force during the photographic film processing." this standard compared with GB/T 9861-1988, the main changes are as follows.

--- Standard format prepared according to GB/T 1.1-2000 be requested;

--- Increasing the foreword and introduction;

--- Added Appendix A. For ease of use, an increase in "Appendix A measurement unit conversion";

--- GB/T 9861-1988 "Determination of scratch resistance force photographic film developing process," although the international standard test methods and a Cause, but there is a big difference with the international standards in technical content and editorial narrative, since this standard is identical translation of international standards, Therefore, this Standard and National Standard GB/T 9861-1988 "Determination of photographic film scratch resistance force during the wash" main Following a big difference.

- In GB/T 9861-1988 is defined scratch force, that is, "the measured surface of the coating is scratched, needles applied Pressure "in Newtons (N), and scratch resistance of this standard is based on the emulsion layer is scratched, the weight load on the stylus the amount of the unit is g, the two are not different in nature, but a different choice of units;

- does not correspond to the text editor, GB/T 9861-1988 is to absorb the international standards of technical content, self-written, Logically from the text, compared with the present standard standardization, and GB/T 9861-1988 compared with the practical;

- GB/T 9861-1988 provides reproducible method requires measuring the relative standard deviation of not more than 15%, while this standard only it provides a significant level of evaluation values;

- There are differences in the standard name. Standard Edition of 1988 by the name be changed to "the process of photographic film scratch assay force flush" "Imaging material photographic film and paper photographic emulsions wet scratch resistance measurement method." GB/T 9861-1988 outstanding Anti-scratch "force", but said the present standard scratch resistance. GB/T 9861-1988 that "washing process", and this standard Limited only in "wet" state.

Appendix A of this standard is a normative appendix.

The standard proposed by China Petroleum and Chemical Industry Association.

The photosensitive material standard by the National Standardization Technical Committee (SAC/TC102) centralized.

This standard was drafted. China Lucky Film Group Corporation.

Introduction

Fine latex emulsion and wash any stationary processing machinery parts rub against each other photographic material, it may result in the processing plan hurt. Flushing film or paper tray by hand, due to the fine layer may be too soft to foreign particles, all kinds of sharp corners or fingernail scratch emergence Scratch.

Photographic emulsions in the wet state than dry state more easily scratched, wet emulsion and fine rubber backing layer than the support material is easier to scratch. The standard Accurate testing methods can only be applied to such a wet emulsion layer and a layer of wet fine. Dry scratch resistance can be found in Reference [1].

Fine photographic emulsion layer and physical changes occur over time, these coatings wet scratch resistance when they depend inherent in the manufacture of immanence can. Different before processing the dry state, e.g., storage temperature and moisture content also affected.

Process depends not only on the case of scratch resistance of the inherent characteristics of the emulsion, the type of machining fluid, the temperature and soaking time it also Movies Ring (see reference [2] for details). These factors must be carefully controlled measurement emulsion scratch.

Wet scratch resistance test results to determine the importance of the material in accordance with various end uses. For example, some of the film was observed in a wet state, While the general observation or film and photographs for use in dry before him. Some of the material after drying inspection scratched impact on the more wet state small. You must select the most appropriate evaluation methods, and clearly stated in the results.

Standard test methods provide a good means to compare different emulsions aging degree, the type of processing liquid, the processing temperature and soaking time the results of post-processing effects as well as other aspects. But whether it is continuous, trough or disc processing, equipment and technology related to many factors, They can not be considered in the test program. Analysis of the scratch resistance of a processing system, only use the processing system to operate.

When this test method is also applicable to the determination of the fine latex layer in the normal or accelerated aging physical robustness, used for this purpose, soaked in distilled Determination of wet scratch distilled water.

GB/T 9861-2008/ISO 18914:2002 Imaging materials photographic film and paper Photographic emulsions wet scratch resistance measurement method

1 Scope

This standard specifies laboratory test methods for photographic emulsions or fine rubber backing layer scratch resistance in the washing process.

This method is applicable to the determination of the processing performance of the liquid changes, fine layer characteristics, process fluid temperature and processing times and other factors as well as combinations of these factors After together on anti-scratch ability of fine layer wet.

The method is also applicable to the determination of the photographic emulsion firmness in the wet state, but not for the evaluation of the support material scratch resistance.

2 Devices