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GA/T 1954-2021: Forensic sciences - Specifications for examination of printing source
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GA/T 1954-2021 | English | 269 |
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Forensic sciences - Specifications for examination of printing source
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Basic data | Standard ID | GA/T 1954-2021 (GA/T1954-2021) | | Description (Translated English) | Forensic sciences - Specifications for examination of printing source | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | A92 | | Word Count Estimation | 11,173 | | Issuing agency(ies) | Ministry of Public Security | GA/T 1954-2021: Forensic sciences - Specifications for examination of printing source---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Forensic sciences - Specifications for examination of printing source
ICS 13.310
CCSA92
People's Republic of China Public Safety Industry Standards
Specification for Provenance Inspection of Forensic Science Printed Materials
Published on 2021-10-14
2022-05-01 Implementation
Published by the Ministry of Public Security of the People's Republic of China
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
Please note that some content of this document may be patented. Publication of this document
Institutions do not assume responsibility for identifying patents.
This document is proposed by the National Criminal Technology Standardization Technical Committee Document Inspection Sub-Technical Committee (SAC/TC179/SC10) and
focal point.
This document is drafted by. Ministry of Public Security Material Evidence Identification Center, Zhejiang Provincial Public Security Department, Wuxi Municipal Public Security Bureau, China Criminal Police Academy, Hubei Police Officer
College.
The main drafters of this document. Han Xingzhou, Hao Hongguang, Guo Zihan, Wang Xiaoguang, Yan Haiqian, Qi Yuxin, Wang Yun, Li Zhirong, Li Jiangchun, Qin Da,
Yang Qiufeng and Wang Jinsheng.
Specification for Provenance Inspection of Forensic Science Printed Materials
1 Scope
This document specifies the inspection methods, origin identification, homology identification, preliminary preparation, and inspection of the source inspection of printed matter in the field of forensic science.
Procedures, appraisal opinions, inspection records, copies of inspection materials, and appraisal documents.
This document is intended for source verification of printed documents in the field of forensic science.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
GA/T 1441-2017 Specification for forensic science same-page printing appraisal opinions
3 Terms and Definitions
There are no terms and definitions that need to be defined in this document.
4 Inspection methods
4.1 Visual inspection
Directly observe or use a magnifying glass to improve the graphic content, layout characteristics, relative position, color, anti-counterfeiting and other characteristics of printed documents.
line inspection.
4.2 Microscopic examination
Using microscopes and other equipment, the detailed characteristics of the printed documents, such as dot shape, printing defects, knife mark shape, binding marks, etc., are inspected.
4.3 Optical inspection
Use side light, light transmission, spectrum equipment, etc. to test the absorption, reflection, and fluorescence characteristics of printed graphics.
4.4 Measurement inspection
Use relevant software and hardware equipment to measure and measure the physical quantity, positional relationship, chromaticity, ink layer thickness, printing density and other parameters of graphics and texts.
analyze.
4.5 Physical and chemical analysis
Physical and chemical analysis and other equipment were used to analyze and test the composition of ink, paper, etc.
Note. According to the actual situation, one or more methods from 4.1 to 4.5 can be selected for inspection.
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