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GB/T 33876-2017 English PDF

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GB/T 33876-2017: Method of measuring gloss uniformity of image on colour copied pages
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Basic data

Standard ID GB/T 33876-2017 (GB/T33876-2017)
Description (Translated English) Method of measuring gloss uniformity of image on colour copied pages
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard N47
Classification of International Standard 37.100.01
Word Count Estimation 11,148
Date of Issue 2017-07-12
Date of Implementation 2018-02-01
Quoted Standard GB/T 8941-2013; GB/T 9754-2007
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 color reproduction of the image in the 20 ��, 60 �� and 75 �� geometric conditions gloss uniformity of the test method. This standard applies to electrostatic copying of color reproduction. Color printing products can refer to use.

GB/T 33876-2017: Method of measuring gloss uniformity of image on colour copied pages

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Method of measuring gloss uniformity of image on color copied pages ICS 37.100.01 N47 National Standards of People's Republic of China Color copy of the image uniformity test methods 2017-07-12 Posted 2018-02-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the China Machinery Industry Federation. This standard by the National Copy Machinery Standardization Technical Committee (SAC/TC147) centralized. The main drafting units of this standard. Zhuhai Tianwei Pegasus printing supplies Co., Ltd., Beijing Lai Sheng High-tech Co., Ltd., Zhuhai Ben Figure Co., Ltd., Tianjin Institute of Copy Technology, Hubei Dinglong Chemical Co., Ltd., Canon (China) Co., Ltd., Dongguan Chi filial piety Information Technology Technology Co., Ltd. The main drafters of this standard. Zhang Xiping, Dong Yingjie, Ren Junqiang, Lv Guihua, Luli Ping, Lu Jun and Li Qingshun. Color copy of the image uniformity test methods

1 Scope

This standard specifies the color copy of the image at 20 °, 60 ° and 75 ° under the geometric conditions of the uniformity of the test method. This standard applies to electrostatic color imaging of the copy. Color print reference to use.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. Paper and board - Determination of specular gloss GB/T 8941-2013 GB/T 9754-2007 Paints and varnishes - Determination of specular gloss at 20 °, 60 ° and 85 ° for metallic paint-free paint films

3 Definition of terms

GB/T 8941-2013 defined and the following terms and definitions apply to this document. For ease of use, the following list is repeated GB/T 8941-2013 some of the terms and definitions. 3.1 Gloss gloss The direction of the surface of the object to select the nature of the reflection, which determines the nature of the surface can be seen in the strong reflection of light or object mirror Like the degree. [GB/T 8941-2013, Definition 3.1] Note 1. The gloss is expressed as 100 times the ratio of the luminous flux reflected by the sample surface to the specified aperture and the luminous flux reflected by the standard mirror under the same conditions. Note 2. An image with a high specular reflection on the front surface is considered to have a high gloss, whereas an anterior surface is more specular on the image being considered as low gloss degree. The gloss value will vary depending on the measurement method (eg, glossmeter measurement angle and sampling area size) and the level of gloss in the region of interest And different. Note 3. GB/T 8941-2013 provides that the refractive index of 1.567 polished black glass as a gloss benchmark, assuming that the plane in the ideal polishing State, from the plane of the natural beam of the mirror reflection, the definition of the gloss value of 100 gloss units. Note 4. Definition of GB/T 9754-2007 3.1 The specular gloss is "To determine the specular gloss scale, a polished black glass with a refractive index of 1.567 The specular gloss value of 100 given the geometrical conditions of 20 °, 60 ° and 85 °. "

4 principle

With the gloss meter determination and the normal line of the copy at an angle (20 °, 60 ° and 75 °) incident on the printed surface, and from the printed surface and the normal The light reflected to the specified aperture at the corresponding angles (20 °, 60 ° and 75 °) is displayed on the gloss meter.

5 instruments and devices

5.1 optical system 20 °, 75 ° gloss meter should meet the technical requirements of GB/T 8941-2013, 60 ° gloss meter should be consistent with GB/T 9754-

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