BS 6221-24:1992

Committees responsible
National foreword
Specification
1. Scope
2. Normative references
3. General
4. Artwork
5. Characteristics and requirements of original
    production master and artwork master when these
    are supplied by the customer to the manufacturer
    of the printed boards
6. Testing
7. Packaging
Annexes
A. Information on dimensional relations between
    original production master and printed board
B. Material dimensional changes
Tables
1. Tolerance classes
2. Layer to layer registration
3. Deviation from ideal definition
4. Defect sizes of conductor width
5. Defect sizes of nominal spacing
6. Defect sizes of nominal spacing
7. Atmospheric conditions for dimensional testing
Figures
1. Emulsion readings
2a. Single datum reference printed board area
2b. Multiple datum reference within rigid portion of
    flex-rigid printed board example
3. Tolerance proportional to distance
4. Conductor defects and spots between conductors
5. Inspection light table

Establishes uniform requirements for the quality of artwork masters and of original production masters. Also defines the attributes to be assessed and the test methods to be used in judging this quality.