{"product_id":"roland-large-ink-damper-for-fj740","title":"Roland Large Ink Damper for FJ740","description":"\u003cdiv style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;line-height:1.6;color:#222;\"\u003e \u003ch2 style=\"font-size:22px;margin:0 0 12px;\"\u003eRoland Large Ink Damper for FJ740 \/ SJ645 \/ SJ745 \/ FJ540 Printers\u003c\/h2\u003e \u003cp style=\"margin:0 0 14px;\"\u003e The \u003cstrong\u003eRoland Large Ink Damper\u003c\/strong\u003e is designed for high-volume wide-format printing, providing a stronger buffer effect and larger ink capacity. It reduces pressure fluctuations and helps ensure stable ink delivery. For different workflows, \u003cstrong\u003esmall dampers\u003c\/strong\u003e are also available and recommended for standard printing needs. \u003c\/p\u003e \u003ch3 style=\"font-size:18px;margin:14px 0 8px;\"\u003eLarge vs. Small Ink Damper\u003c\/h3\u003e \u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e \u003cthead\u003e \u003ctr style=\"background:#f5f5f5;\"\u003e \u003cth style=\"border:1px solid #ddd;padding:8px;\"\u003eFeature\u003c\/th\u003e \u003cth style=\"border:1px solid #ddd;padding:8px;\"\u003eLarge Ink Damper\u003c\/th\u003e \u003cth style=\"border:1px solid #ddd;padding:8px;\"\u003eSmall Ink Damper\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eInk Flow\u003c\/td\u003e \u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eHigher capacity, supports long print runs\u003c\/td\u003e \u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eStandard flow, suited for moderate workloads\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eStability\u003c\/td\u003e \u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eStronger buffer against ink pressure surges\u003c\/td\u003e \u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eSufficient stabilization for daily operation\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eBest Use\u003c\/td\u003e \u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eContinuous production \/ high ink demand\u003c\/td\u003e \u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eStandard office or shop printing\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch3 style=\"font-size:18px;margin:14px 0 8px;\"\u003eBenefits\u003c\/h3\u003e \u003cul style=\"margin:0 0 14px;padding-left:18px;\"\u003e \u003cli\u003eFilters impurities to prevent printhead clogging\u003c\/li\u003e \u003cli\u003eStabilizes ink pressure for consistent output\u003c\/li\u003e \u003cli\u003eProtects printheads from air bubbles and surges\u003c\/li\u003e \u003cli\u003eExtends service life of the print system\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e 1 × Large Ink Damper (Small Damper available separately)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eUse Position \u0026amp; Function\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eThe damper is normally installed between the ink supply path and the printhead to stabilize pressure and reduce bubbles.\u003c\/li\u003e \u003cli\u003eIt helps support smoother ink delivery and can also assist with filtering fine particles before ink reaches the printhead.\u003c\/li\u003e \u003cli\u003eDamper performance has a direct effect on ink stability, especially on multi-channel or high-speed printers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility Reference\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReferenced machine models: FJ740, SJ645, SJ745, FJ540.\u003c\/li\u003e \u003cli\u003eConfirm the damper style against the reference printhead connection and ink-path layout.\u003c\/li\u003e \u003cli\u003eSuitable for industrial inkjet use when the connector type, orientation, and sealing method match the reference damper.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen Buyers Replace This Part\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplace when ink flow becomes unstable, bubbles increase, colors drop out, or the damper body becomes contaminated or deformed.\u003c\/li\u003e \u003cli\u003eCompare the manufacturer part number, connection layout, and mounting direction before ordering.\u003c\/li\u003e \u003cli\u003eFor best maintenance results, buyers often inspect cap tops, tubing, and ink filters at the same time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Replacement Scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplace when colors intermittently drop out, bubbles appear repeatedly, or the printhead side shows unstable ink feeding.\u003c\/li\u003e \u003cli\u003eInspect this part when the damper body becomes stained, swollen, cracked, or no longer seals reliably.\u003c\/li\u003e \u003cli\u003eOn printers with multiple channels, one weak damper can affect daily color consistency even if the printhead is still usable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment Checklist\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReferenced machine models: FJ740, SJ645, SJ745, FJ540.\u003c\/li\u003e \u003cli\u003eConfirm the printhead-side connector, damper shape, and line orientation against the model-reference part.\u003c\/li\u003e \u003cli\u003eCheck joint style, filter structure, connector direction, sealing method, and manufacturer reference before final purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eService Pairing Suggestions\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMany buyers inspect cap tops, ink tubes, pumps, and filters at the same time when damper problems appear.\u003c\/li\u003e \u003cli\u003eUse this damper only when the industrial inkjet ink path, connector style, and physical size match the reference assembly.\u003c\/li\u003e \u003cli\u003eProfessional installation is recommended when the printer uses a sealed manifold or tightly packed multi-channel head carriage.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"UV INK PRO","offers":[{"title":"Large","offer_id":44272614768726,"sku":null,"price":1.15,"currency_code":"USD","in_stock":true},{"title":"Small","offer_id":44272614801494,"sku":null,"price":0.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/3782\/5878\/files\/Roland-Ink-Damper-for-FJ740-1.webp?v=1774950615","url":"https:\/\/www.uvinkpro.com\/products\/roland-large-ink-damper-for-fj740","provider":"UV INK PRO","version":"1.0","type":"link"}