{"id":340,"date":"2022-11-18T22:20:46","date_gmt":"2022-11-18T22:20:46","guid":{"rendered":"http:\/\/www.unigraphinternational.ca\/?post_type=unigraph_soutien&p=340"},"modified":"2022-11-22T13:32:55","modified_gmt":"2022-11-22T13:32:55","slug":"scumming","status":"publish","type":"unigraph_soutien","link":"https:\/\/www.unigraphinternational.com\/en\/soutien\/scumming\/","title":{"rendered":"Scumming"},"content":{"rendered":"

TROUBLESHOOTING FOR SHEETFED AND WEB PRESSES<\/h4>\n

Scumming : The non-image area is not being kept clean and image may be plugging in.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
Causes<\/th>\nRemedies<\/th>\n<\/tr>\n
Insufficient amount of water being applied to the plate.<\/td>\nIncrease water feed to the plate. Check setting and condition of rollers.<\/td>\n<\/tr>\n
Ink rollers of wrong durometer (too soft or too hard).<\/td>\nCheck durometer, setting and condition of rollers.<\/td>\n<\/tr>\n
Ink or water form rollers set improperly.<\/td>\nCheck and reset rollers to manufacturer\u2019s specs.<\/td>\n<\/tr>\n
Wash-up solution left in the rollers.<\/td>\nWash rollers with water-miscible wash and finish with water as the final wash-up step.<\/td>\n<\/tr>\n
Plate not properly desensitized.<\/td>\nDesensitize or remake plate<\/td>\n<\/tr>\n
Fountain solution out of balance.<\/td>\nDrain tank, flush thoroughly with Uni Power Flush, and re-fill with fresh fountain solution.<\/td>\n<\/tr>\n
Roller train temperature too hot.<\/td>\nMaintain less than 90\u00baF (32\u00baC) in roller train. If press has ink-train cooling, set it at approximately 77\u00baF to 82\u00baF (25\u00baC to 27\u00baC).<\/td>\n<\/tr>\n
Wear of plate due to abrasive material from the paper on the blanket.<\/td>\nChange to a better paper. Reduce plate-toblanket pressure to minimum.<\/td>\n<\/tr>\n
Air movement across the plate.<\/td>\nCheck for open doors or air vents directed at the press. Close doors, redirect air vents.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

TROUBLESHOOTING FOR SHEETFED AND WEB PRESSES Scumming : The non-image area is not being kept clean and image may be plugging in. Causes Remedies Insufficient amount of water being applied to the plate. Increase water feed to the plate. Check setting and condition of rollers. Ink rollers of wrong durometer (too soft or too hard). […]<\/p>\n","protected":false},"template":"","unigraph_category_soutien":[33],"class_list":["post-340","unigraph_soutien","type-unigraph_soutien","status-publish","hentry","unigraph_category_soutien-troubleshooting"],"acf":[],"yoast_head":"\nScumming - Unigraph international<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.unigraphinternational.com\/en\/soutien\/scumming\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Scumming - Unigraph international\" \/>\n<meta property=\"og:description\" content=\"TROUBLESHOOTING FOR SHEETFED AND WEB PRESSES Scumming : The non-image area is not being kept clean and image may be plugging in. Causes Remedies Insufficient amount of water being applied to the plate. Increase water feed to the plate. Check setting and condition of rollers. Ink rollers of wrong durometer (too soft or too hard). […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.unigraphinternational.com\/en\/soutien\/scumming\/\" \/>\n<meta property=\"og:site_name\" content=\"Unigraph international\" \/>\n<meta property=\"article:modified_time\" content=\"2022-11-22T13:32:55+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.unigraphinternational.com\\\/en\\\/soutien\\\/scumming\\\/\",\"url\":\"https:\\\/\\\/www.unigraphinternational.com\\\/en\\\/soutien\\\/scumming\\\/\",\"name\":\"Scumming - Unigraph international\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.unigraphinternational.com\\\/#website\"},\"datePublished\":\"2022-11-18T22:20:46+00:00\",\"dateModified\":\"2022-11-22T13:32:55+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.unigraphinternational.com\\\/en\\\/soutien\\\/scumming\\\/#breadcrumb\"},\"inLanguage\":\"en-CA\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.unigraphinternational.com\\\/en\\\/soutien\\\/scumming\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.unigraphinternational.com\\\/en\\\/soutien\\\/scumming\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.unigraphinternational.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Scumming\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.unigraphinternational.com\\\/#website\",\"url\":\"https:\\\/\\\/www.unigraphinternational.com\\\/\",\"name\":\"Unigraph international\",\"description\":\"Nous c\u00e9l\u00e9brons 40 ans d\u2019innovation et d\u2019excellence!\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.unigraphinternational.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.unigraphinternational.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-CA\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.unigraphinternational.com\\\/#organization\",\"name\":\"Unigraph international\",\"url\":\"https:\\\/\\\/www.unigraphinternational.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-CA\",\"@id\":\"https:\\\/\\\/www.unigraphinternational.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.unigraphinternational.com\\\/wp-content\\\/uploads\\\/2022\\\/11\\\/unigraph-logo_fr.svg\",\"contentUrl\":\"https:\\\/\\\/www.unigraphinternational.com\\\/wp-content\\\/uploads\\\/2022\\\/11\\\/unigraph-logo_fr.svg\",\"caption\":\"Unigraph international\"},\"image\":{\"@id\":\"https:\\\/\\\/www.unigraphinternational.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Scumming - Unigraph international","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.unigraphinternational.com\/en\/soutien\/scumming\/","og_locale":"en_US","og_type":"article","og_title":"Scumming - Unigraph international","og_description":"TROUBLESHOOTING FOR SHEETFED AND WEB PRESSES Scumming : The non-image area is not being kept clean and image may be plugging in. Causes Remedies Insufficient amount of water being applied to the plate. Increase water feed to the plate. Check setting and condition of rollers. Ink rollers of wrong durometer (too soft or too hard). 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