{"id":36096,"date":"2026-07-08T11:56:08","date_gmt":"2026-07-08T09:56:08","guid":{"rendered":"https:\/\/news.modico.com\/?p=36096"},"modified":"2026-07-08T11:58:10","modified_gmt":"2026-07-08T09:58:10","slug":"summer-heat-uv-printing","status":"publish","type":"post","link":"https:\/\/news.modico.com\/en\/summer-heat-uv-printing\/","title":{"rendered":"Summer Heat UV Printing"},"content":{"rendered":"
When the ambient temperature rises too high, viscosity, printhead stability, and negative pressure levels change. The result: nozzle malfunctions, missing colors, and droplet formation.<\/strong> <\/p>\n UV inks are designed to function optimally within a precise temperature range (typically between 20\u00b0C and 25\u00b0C).<\/p>\n What happens:<\/strong> At elevated temperatures, the ink becomes excessively fluid (viscosity decreases).<\/p>\n \u2192\u00a0The consequence:<\/strong> The printhead can no longer effectively retain the ink. This leads to dripping, pressure fluctuations, and the formation of air bubbles in the ink lines.<\/p>\n UV lamps\u2014especially LED versions\u2014generate significant heat. Combined with the ambient temperature, this heat accelerates the evaporation of volatile ink components.<\/p>\n What happens:<\/strong> The ink forms a microfilm or thickens directly on the printhead surface (nozzle plate) or inside the dampers before it is even ejected.<\/p>\n \u2192\u00a0The consequence:<\/strong> Nozzles become clogged, even immediately after a cleaning cycle.<\/p>\n Many UV printers use a negative pressure system to maintain the optimal ink balance within the printhead.<\/p>\n What happens:<\/strong> Hot air expands. The thermal expansion of air in the ink tanks or ink lines alters the negative pressure levels.<\/p>\n \u2192\u00a0The consequence:<\/strong> The ink either retracts from the printhead (causing missing colors) or, conversely, begins to drip uncontrollably onto the printing substrate.<\/p>\n Printheads generate internal heat during operation due to piezoelectric friction. If ambient temperatures are already elevated, the printhead may exceed its critical operating temperature.<\/p>\n \u2192\u00a0The result:<\/strong> This leads to blockages or alters the size of the ejected ink droplets to such an extent that no ink is dispensed at all.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner][mk_padding_divider][vc_column_text css=”.vc_custom_1783502097266{margin-bottom: 0px !important;}”][\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner][vc_column_text margin_bottom=”0″ css=”.vc_custom_1783504492765{margin-bottom: 0px !important;}”]\n <\/p>\n Many UV systems feature heaters designed for winter operation. \u2192 Reduce heater temperature by 1\u20132\u00b0C to prevent the ink from overheating.<\/p>\n \u2192 Prevents film buildup on the nozzle plate and dampers<\/p>\n \u2192 Stabilizes the printhead before long production runs<\/p>\n If problems persist despite optimized working conditions, please feel free to contact our technical support team at any time![\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row]\n<\/div>","protected":false},"excerpt":{"rendered":" Ihr UV-Drucksystem verh\u00e4lt sich in der Sommerhitze anders als im Winter? Sie t\u00e4uschen sich nicht. Die wichtigsten Ursachen \u2013 und was Sie sofort tun k\u00f6nnen in diesem Blogbeitrag!<\/p>\n","protected":false},"author":235,"featured_media":36069,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[],"tags":[540],"class_list":["post-36096","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-uv-druck-en"],"acf":[],"yoast_head":"\n
\n[\/vc_column_text][vc_single_image image=”36083″ img_size=”full” alignment=”center” css=”.vc_custom_1783503595182{padding-bottom: -50px !important;}”][mk_padding_divider size=”15″][\/vc_column][\/vc_row][vc_row][vc_column][vc_row_inner][vc_column_inner][vc_column_text margin_bottom=”0″ css=”.vc_custom_1783504466349{margin-bottom: 0px !important;}”]\nBelow are four main causes and concrete solutions.<\/strong><\/h3>\n
🔥 Altered Ink Viscosity<\/strong><\/h4>\n
\n🌡️\u00a0Premature Drying (Filming)<\/strong><\/h4>\n
\n🌀\u00a0“Siphon” Effect & Unstable Negative Pressure<\/strong><\/h4>\n
\n⚙️\u00a0Printhead Overheating<\/strong><\/h4>\n
✅ Summer Heat and UV Digital Printing \u2013 Immediate Steps You Can Take:<\/h2>\n
🧊 Control the Environment (Important!)<\/h3>\n
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\n🔧 Adjust Printhead Heaters<\/h3>\n
\nAt a room temperature of 30\u00b0C:<\/p>\n
\n🧽 Increase Automatic Cleaning<\/h3>\n
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\n🚀 Perform Manual Purge Before Large Jobs<\/h3>\n
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