BS ISO 12647-1:2004

BS ISO 12647-1:2004 Graphic technology. Process control for the production of half-tone colour separations, proof and production prints. Parameters and measurement methods

The BS ISO 12647 series specify printing conditions for the various processes used in the graphic arts industry.

You can use the parameters specified when working with others to define intended printing condition and/or for the process control of printing.

BS ISO 12647-1:

• Defines vocabulary
• Establishes a minimum set of process parameters that uniquely determine a printed four-colour half-tone image. It covers:

1. colour separation
2. making of the printing forme
3. proofing
4. production printing
5. surface finishing

These are directly applicable to proofing and printing processes that use colour separation films as input;

• Applies to proofing and printing from printing surfaces produced by filmless methods as long as direct analogies to film production systems are maintained
• Is applicable to proofing and printing with more than four process colours as long as direct analogies to four-colour printing are maintained, such as for data and screening, for print substrates and printing parameters
• Is applicable to line screens and, where relevant, to those that do not have regular screen angles or regular screen rulings.

Contents of BS ISO 12647-1:

Foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Requirements

4.1 General

4.2 Data file, colour separation films and printing formes

4.3 Proof or production print

5 Test methods

5.1 Screen angles

5.2 Tone value on a colour-separation film or of a data file

5.3 Tone value on the print

5.4 Tone value increase on the print

5.5 Gloss

5.6 Spectral measurement, computation of CIELAB colour co-ordinates and CIELAB colour differences

Annex A (normative) Reporting

Annex B (informative) Determination of quality parameters of half-tone dots on a colour separation film

Bibliography