前言
国际标准化组织 (国际标准化组织) 是国家标准机构的全球联盟 (ISO成员机构). 国际标准的制定通常通过ISO技术委员会进行. 每个对已成立技术委员会的主题感兴趣的成员机构都有权在该委员会中派代表参加. 与 ISO 联络的国际政府和非政府组织也参与了这项工作. ISO 与国际电工委员会密切合作 (国际电工委员会) 关于电工标准化的所有问题.

国际标准是按照第 2 部分给出的规则起草的。 2 ISO/IEC 指令的.

技术委员会的主要任务是制定国际标准. 技术委员会通过的国际标准草案将分发给成员机构进行投票. 作为国际标准的出版至少需要获得批准 75% 成员机构的数量.

请注意，本文档的某些内容可能受专利权保护. ISO 不负责识别任何或所有此类专利.

国际标准化组织 2846-2 由ISO/TC技术委员会制定 130, 图形技术.

第二版取消并取代第一版 (国际标准化组织 2846-2:2000), in which articles 4 和 5 have been technically revised and the colorimetric characteristics of inks have been adjusted to meet actual commercial requirements and process standard ISO 12647-3[1]. The test print readiness details specified in ISO 2834-1 have now been removed.

国际标准化组织 2846 consists of the following sections under the general heading Graphics Technology – Color and Transparency of printing ink sets for four-colour printing:

— 部分 1: Sheet-fed and heat-set web offset lithography

— 部分 2: cold-set offset lithography

— 部分 3: Intaglio printing of publications

— 部分 4: Screen printing

— 部分 5: Flexographic printing

国际标准化组织 2846-2-2017 印刷技术 – 四色印刷油墨的颜色和透明度 – 部分 2: 冷固胶印平版印刷

介绍
The first draft of ISO 2846-2 was written by ISO/TC 130 for material and process control. They examined the colorimetric properties of commercial cold-set web offset inks from around the world and found a set of color coordinates that adequately represented these color coordinates within reasonable tolerances. Since this part of ISO 2846 was first published, additional coordination between the various national agencies involved in ISO/TC 130 has shown that minor improvements to the contrasting color target will bring it more in line with the actual commercial printing requirements and process standard ISO 12647-3 [1].

ISO的这一部分 2846 will allow printers to obtain sets of printing inks from a variety of sources that will produce similar colours when printed on a reference substrate at the appropriate film thickness. This will allow color separation of cold-set offset printing based on known color standards. The colorimetric properties specified in this part of ISO 2846 can only be obtained when the ink is printed on a reference substrate. 然而, the similarity of the two inks on the reference substrate will ensure the similarity on the other substrate.

1 范围
ISO的这一部分 2846 specifies the color and transparency of inks used for four-color cold-set web offset printing when printed on a printability tester under specified conditions. It also describes testing methods to ensure consistency.

ISO的这一部分 2846 does not apply to fluorescent inks and does not specify pigments (or spectral reflectance) so as not to rule out future use of suitable pigment combinations and still claim to meet its colorimetric requirements.

2 规范性引用文件
The following reference documents are not available or available for use in this document. 对于注明日期的参考文献, 仅引用版本适用. 对于未注明日期的参考文献, 新版本的参考 (包括任何修订) 适用.

国际标准化组织 536, paper and board – 克重的测定

国际标准化组织 2471, 纸和纸板 – Determination of opacity (paper backing) – diffuse reflection method

国际标准化组织 2834-1, Graphic techniques – Laboratory preparation of test prints – 部分 1: pasting inks

国际标准化组织 8791-4, paper and board – Determination of roughness/smoothness (air leakage method) – 部分 4: printing surf method

国际标准化组织 13655, Graphic Techniques – Spectral measurement and chrominance calculation of graphic art images

ANSI/CGATS. 5:2003, Graphic Techniques — Spectral measurement and chrominance calculation of graphic art images

国际标准化组织 2846-2-2017 印刷技术 – 四色印刷油墨的颜色和透明度 – 部分 2: 冷固胶印平版印刷

3 术语和定义
就本文件而言, 以下术语和定义适用.

3.1 Cold set printing

Web offset printing without accelerated drying

笔记 1: The ink set is absorbed into the substrate.

3.2 Standard Ink

Inks for four-colour printing, printed on a reference substrate and printed within the applicable ink film thickness range, comply with the colorimetric and transparency specifications in this part of ISO 2846

3.3 Primary Color

The color of individual prints with yellow, magenta, and cyan inks

笔记 1 Prints are standard primary colors if they are produced in accordance with this part of ISO 2846 and conform to specified colorimetric characteristics.

3.4 透明度

The ability of an ink film to transmit light is usually expressed as some measure of unwanted scattering

3.5 Transparency measurement T

The reciprocal of the slope of the regression line between the film thickness and the color difference of the color ink overprint on black

仅标准信息部分是公开的. 查看完整内容, 需要通过官方渠道购买标准.