Application of Reflection Density Measurement and Chromaticity Measurement in Printing (II)

The following content is stipulated in this standard:

- Definitions and terminology;

- Minimum requirements for test strips;

-Test Methods;

- Report method of results.

This standard applies to the use of density measurement and colorimetry for printing process control and evaluation of monochrome, multi-color proofs and prints.

2 Reference standards

The provisions contained in the following standards form the provisions of this standard by reference in this standard. When the standard is published, the versions shown are valid. All standards will be revised and all parties using this standard should explore the possibility of using the latest version of the following standards.

GB/T 17934.1-1999 Printing technology - Process control of half-tone colour separations, proofs and printed products - Part 1: Parameters and test methods

GB/T 17934.2-1999 Printing technology - Process control of half-tone colour separations, proofs and printed products - Part 2: Offset printing

GB/T 11501-1989 Spectral conditions for density measurements

Spectral Measurement and Colorimetric Calculation of ISO 13655 Printed Images

3 Terms and Definitions

3.1 Optical aperture aperture

An optical device that determines the area of ​​the test sample on the instrument.

3.2 colorimeter colorimeter

Instrument for measuring colorimetric values.

Note: The tristimulus value colorimeter is a colorimetric value obtained by measuring the reflectance or transmittance or transmittance of an object, a standard light source, and a filter defined by a standard observer function, based on the analog integration of their spectral product. Spectral colorimeters are calculated by measuring spectral reflectance or transmittance data.

3.3 control block control patch

A reference block for measurement or control (consisting of geometric points such as dots, lines, or solids).

3.4 Control strip control strip

One-dimensional array of control blocks. (See 3.7 of GB/T 17934.1)

3.5 Center density

The transmission density in the center of a single opaque image element (such as a dot or line).

3.6 Density density

See reflection density.

Note: In this standard, generally only applies to reflective samples. Unless otherwise specified, use the word density.

1 Scope

The following content is stipulated in this standard:

- Definitions and terminology;

- Minimum requirements for test strips;

-Test Methods;

- Report method of results.

This standard applies to the use of density measurement and colorimetry for printing process control and evaluation of monochrome, multi-color proofs and prints.

2 Reference standards

The provisions contained in the following standards form the provisions of this standard by reference in this standard. When the standard is published, the versions shown are valid. All standards will be revised and all parties using this standard should explore the possibility of using the latest version of the following standards.

GB/T 17934.1-1999 Printing technology - Process control of half-tone colour separations, proofs and printed products - Part 1: Parameters and test methods

GB/T 17934.2-1999 Printing technology - Process control of half-tone colour separations, proofs and printed products - Part 2: Offset printing

GB/T 11501-1989 Spectral conditions for density measurements

Spectral Measurement and Colorimetric Calculation of ISO 13655 Printed Images

3 Terms and Definitions

3.1 Optical aperture aperture

An optical device that determines the area of ​​the test sample on the instrument.

3.2 colorimeter colorimeter

Instrument for measuring colorimetric values.

Note: The tristimulus value colorimeter is a colorimetric value obtained by measuring the reflectance or transmittance or transmittance of an object, a standard light source, and a filter defined by a standard observer function, based on the analog integration of their spectral product. Spectral colorimeters are calculated by measuring spectral reflectance or transmittance data.

3.3 control block control patch

A reference block for measurement or control (consisting of geometric points such as dots, lines, or solids).

3.4 Control strip control strip

One-dimensional array of control blocks. (See 3.7 of GB/T 17934.1)

3.5 Center density

The transmission density in the center of a single opaque image element (such as a dot or line).

3.6 Density density

See reflection density.

Note: In this standard, generally only applies to reflective samples. Unless otherwise specified, use the word density.