ISO 12635 pdf free download
ISO 12635-2021 pdf free download.Graphic technology一Plates for offset printing一Dimensions.
This document specifies the width, length and thickness of metal lithographic printing plates (referred to hereafter as “plates”). For plates to be used in computer to plate (CtP) applications, flatness, edge straightness and burr requirements are also included. These requirements are applicable to unprocessed plates.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www .org/obp
— I EC Electropedia: available at https://www.elcctropedia.org/
3.1 cutting burr
ridge along the edge of a plate produced by cutting, especially with a blunt knife
3.2 plate width w
dimension of a printing plate parallel to the cylinder axis (clamping edge)
3.3 plate thickness S
caliper of a coated plate
3.4 edge waviness
degree to which a plate edge conforms to a measurement plane
3.5 plate edge straightness
maximum deviation of the plate edge parallel to the cylinder axis (clamping edge) from a straight line, drawn from the corners of the plate
3.6 unprocessed plates
plates as received from the manufacturer
rights reseswd
Iso 12635:2021(E)
4 Requirements
4.1 Measurement conditions
Measurements shall be conducted when both measurement equipment and plates have reached a
stabilized temperature of 21 °C ± 1 °C.
4.2 Plate dimensions
Commonly used plate widths and heights identified by plate and press manufacturers are specified in Annex D. When selecting plate width and height, these preferred plate sizes should be used.
Where these plate sizes cannot be used, plates for sheet-fed lithographic use may be of any length, L, or width, W, but shall be specified in multiples of 5 mm where the last whole number digit is 0 or 5. Plates for web lithographic use may be of any length or width but shall have their width specified in multiples of 5 mm where the last whole number digit is 0 or 5 and their length specified in multiples of 2 mm where the last whole number digit is 0, 2. 4, 6 or 8. These requirements are summarized in Table 1.
Except where preferred plate sizes are being used, the tolerances for length and width shall be as shown in Table 1.. the measurement conditions of 4,1 shall apply.
The preferred thicknesses and their tolerances shall be as shown in Table 2.ISO 12635 pdf download.
