This document specifies requirements for systems that are used to produce offset prints for process colour reproduction on metallic substrates, which have been printed with a white coating. It is intended for flat printed sheet metal applications. It does not cover shaped or pre-formed metal such as pre-formed cans. Recommendations are provided with regard to appropriate test methods associated with these requirements.<\/p>\n
This document differs from the method used to produce an offset print on paper or board in ISO 12647-2<\/span><\/span> in that it considers the colour values of a typical white coated metal substrate intended for metal decoration, using offset lithography and substrates that are independent of backing colour.<\/p>\n Graphic technology. Process control for the production of half-tone colour separations, proof and production prints – Metal decoration printing processes using offset lithography<\/b><\/p>\nPDF Catalog<\/h4>\n
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\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 2<\/td>\n National foreword <\/td>\n<\/tr>\n \n 6<\/td>\n Foreword <\/td>\n<\/tr>\n \n 7<\/td>\n Introduction <\/td>\n<\/tr>\n \n 9<\/td>\n 1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n\n 10<\/td>\n 4 Requirements
4.1 General
4.2 Data files and printing forms
4.2.1 Data delivery <\/td>\n<\/tr>\n\n 11<\/td>\n 4.2.2 Printing forme quality
4.2.3 Screen frequency (periodic screens)
4.2.4 Dot size (non-periodic screens)
4.2.5 Screen angle (periodic screens) <\/td>\n<\/tr>\n\n 12<\/td>\n 4.2.6 Dot shape and its relationship to tone value (periodic screens)
4.2.7 Tone value sum
4.2.8 Grey reproduction and grey balance
4.3 Proof or production print
4.3.1 General <\/td>\n<\/tr>\n\n 13<\/td>\n 4.3.2 Visual characteristics of image components \u2014 Print substrate colour <\/td>\n<\/tr>\n \n 14<\/td>\n 4.3.3 Ink set colours (colorant description) <\/td>\n<\/tr>\n \n 15<\/td>\n 4.3.4 Tone value reproduction limits
4.3.5 Tone value increase and spread <\/td>\n<\/tr>\n\n 18<\/td>\n 4.3.6 Tolerance for image positioning
4.3.7 Conformance <\/td>\n<\/tr>\n\n 19<\/td>\n 5 Measurement methods
5.1 Computation of densities, CIELAB colour coordinates and CIELAB colour differences
5.2 Control strip <\/td>\n<\/tr>\n\n 20<\/td>\n Annex A (informative) Grey reproduction and grey balance <\/td>\n<\/tr>\n \n 22<\/td>\n Annex B (informative) Handling differences in coating colour <\/td>\n<\/tr>\n \n 23<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" \n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2021<\/td>\n 24<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":379510,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[725,2641],"product_tag":[],"class_list":{"0":"post-379502","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-37-100-01","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/379502","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/379510"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=379502"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=379502"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=379502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}