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GB/T 18405-2008 English PDF

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Q: Should I purchase the latest version GB/T 18405-2008?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 18405-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$174.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 18405-2008: Micrographics -- ISO character and ISO test chart No.1 -- Description and use
Status: Valid

GB/T 18405: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 18405-2008	174	Add to Cart	3 days	Micrographics -- ISO character and ISO test chart No.1 -- Description and use	Valid
GB/T 18405-2001	399	Add to Cart	3 days	Micrographics -- ISO character and characteristics of the 1st test chart and its use	Obsolete

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Basic data

Standard ID: GB/T 18405-2008 (GB/T18405-2008)
Description (Translated English): Micrographics -- ISO character and ISO test chart No.1 -- Description and use
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A14
Classification of International Standard: 37.080
Word Count Estimation: 9,933
Date of Issue: 2008-07-16
Date of Implementation: 2009-01-01
Older Standard (superseded by this standard): GB/T 18405-2001
Quoted Standard: GB/T 321-2005, GB/T 1543-2005, GB/T 6159.1-2003, GB/T 6159.3-2003, GB/T 6159.4-2003, GB/T 6159.5-2000, GB/T 6159.6-2006, GB/T 6159.22-2000, GB/T 6160-2003, ISO 5-2: 2001, ISO 5-3: 1995, ISO 5-4: 1995
Adopted Standard: ISO 446-2004, IDT
Regulation (derived from): Announcement of Newly Approved National Standards No. 12 of 2008 (No. 125 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the characteristics of ISO monochrome character ISO 1 No. 1 Test chart with the characteristics of their usage. This standard applies to a given microfilm microfilm images generated by the system for quality control, and the use of the system produced microform potential readability.

GB/T 18405-2008: Micrographics -- ISO character and ISO test chart No.1 -- Description and use

---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.
Micrographics. ISO character and ISO test chart No.1. Description and use ICS 37.080 A14 National Standards of People's Republic of China GB/T 18405-2008/ISO 446.2004 Replacing GB/T 18405-2001 Micrographics - ISO character and ISO No. 1 Characteristics of the test chart and use (ISO 446.2004, IDT) Posted 2008-07-16 2009-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is identical with ISO 446.2004 "Micrographics - ISO character and ISO test chart No. 1 and describes the use of" (In English). This standard and ISO 446.2004 compared to modify the main editorial as follows. --- Re-write the foreword; --- Use the "standard" instead of "this International Standard"; --- Effective use of existing national standards instead of the corresponding international standard. This standard replaces GB/T 18405-2001 "features characters and Micrographics ISO test chart No. 1 and its use." This standard and GB/T 18405-2001 compared to major technological changes are as follows. --- With ISO 5-2.2001 "Photography - Density measurements - Part 2. Geometric conditions for transmission density", ISO 5-3.1995 "photography Density measurements - Part 3. Spectral conditions "and ISO 5-4.1995" Photography - Density measurements - Part 4. Geometric reflection density Conditions "and other normative references instead of GB/T 11500-1989" photographic transmission density measurement geometry ", GB/T 11501- 1989 "spectral transmission density measurement photographic conditions" and GB/T 12822-1991 "photographic reflection density measurement geometry," and other regulations Normative references. This Standard Document Imaging Technology by the National Standardization Technical Committee (SAC/TC86) and focal points. This standard was drafted. National Information Technology Standardization Technical Committee Document Imaging a club. The main drafters of this standard. Leung Ting, Wang Hao, Li Ming. This standard replaces the standards previously issued as follows. --- GB/T 18405-2001. GB/T 18405-2008/ISO 446.2004

Introduction

In addition to the diffusion transfer method, the replication process will cause most of the image quality is reduced. This severely reduces the quality to a certain extent After the degree, it will make the information unreadable. If the readability of poor quality, long reading can also cause visual fatigue. Readability of the image by measuring the limiting resolution that is the ability to distinguish lines in different directions to be evaluated. However, the limiting resolution Rate image quality level is not sufficient to guarantee the state of comfortable reading, does not guarantee long time to read without cause visual fatigue. Thus, the need to find a practical evaluation criteria. One kind of the font used in the printing industry similar to the regular characters that is ISO character satisfies These requirements, because of its contours and details identifying it without difficulty. The main practical uses ISO character following experimental performance-based. a) If a particular replication process with a certain degree of ISO characters generate a recognizable image from a group, it can be assumed The same replication process will be able to obtain satisfactory images from the printed text is almost the same size font, especially for reading Were sufficiently clear, easy to read, and does not cause fatigue of the image; b) In general, by different observers to identify the limits of the same group of distinguished ISO characters will produce consistent results. GB/T 18405-2008/ISO 446.2004 Micrographics - ISO character and ISO No. 1 Characteristics of the test chart and use

1 Scope

This standard specifies the characteristics of black and white characters and features ISO ISO test chart No. 1 and its use. This standard applies to the quality control reference microfilm microfilm images generated by the system, and using the system made microform potential readability.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties in accordance with this standard research agreement Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 321-2005 priority number and priority number system (ISO 3. 1973, IDT) GB/T 1543-2005 Paper and paperboard opacity (paper backing) measurement (diffuse reflectance method) (ISO 2471.1998, MOD) GB/T 6159.1-2003 Micrographics - Vocabulary - Part 1. General terms (ISO 6196-1.1993, MOD) GB/T 6159.3-2003 Micrographics - Vocabulary - Part 3. film processing (ISO 6196-3.1997, MOD) GB/T 6159.4-2003 Micrographics - Vocabulary - Part 4. Materials and packaging (ISO 6196-4.1998, MOD) GB/T 6159.5-2000 Micrographics - Vocabulary Part V. image quality, readability and inspection (Eqv ISO 6196-5. 1987) GB/T 6159.6-2003 Micrographics - Vocabulary - Part 6. Equipment (ISO 6196-6.1993, MOD) GB/T 6159.22-2000 Micrographics - Vocabulary Part II. and methods of recording images (eqv ISO 6196- 2.1993) GB/T 6160-2003 Micrographics source file first generation silver - gelatin microforms density specifications and methods of measurement (ISO 6200.1999, MOD) ISO 5-2.2001 Photography - Density measurements - Part 2. Geometric conditions for transmission density ISO 5-3.1995 Photography - Density measurements - Part 3. Spectral conditions ISO 5-4.1995 Photography - Density measurements - Part 4. Geometric conditions for reflection density

3 Terms and Definitions

GB/T 6159.1-2003, GB/T 6159.3-2003, GB/T 6159.4-2003, GB/T 6159.5-2000, GB/T 6159.6- Terms and definitions 2003 and GB/T 6159.22-2000 established apply to this standard. Description and use 4 ISO characters 4.1 Description ISO character is a conventional print character font similar to the shape and dimensions specified below. It is a given height Ba having a regular octagon. Within the octagon have two parallel lines, line width and spacing of Ba/7 (see Figure 1). Ba tolerance provided for in 5.2.2. GB/T 18405-2008/ISO 446.2004 ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 18405-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 18405-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 18405-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 18405-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 18405-2008?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 18405-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.