{"product_id":"pilot-78g-fountain-pen-ink-cartridges","title":"Pilot 78G+ Fountain Pen Ink Cartridges","description":"\u003ch2\u003ePilot 78G+ Fountain Pen Ink and IC-100 Cartridges\u003c\/h2\u003e\n\u003cp\u003eAuthentic Pilot Namiki fountain pen ink and high-capacity IC-100 cartridges engineered specifically for classic Pilot writing instruments, including the Pilot 78G+, Kakuno, Metropolitan, and Prera. Formulated with high-purity water-based dye ink, it delivers smooth, consistent capillary flow, rich black opacity, and rapid drying without clogging delicate feed channels.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFactory-Grade Compatibility:\u003c\/strong\u003e Tailored for Pilot proprietary nib units and feed assemblies, ensuring leak-free seating and instant ink start.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmooth Capillary Flow:\u003c\/strong\u003e Optimized surface tension glides effortlessly on fine (F) and extra fine (EF) nibs, minimizing line skipping and railroading.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Density Black Pigment:\u003c\/strong\u003e Deep, non-fading black formulation provides sharp line definition suitable for everyday documentation, calligraphy, and study.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick-Drying Formulation:\u003c\/strong\u003e Formulated to penetrate paper fibers cleanly, significantly reducing smudging on standard notebook and fountain-pen-friendly papers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConvenient \u0026amp; Mess-Free Replacement:\u003c\/strong\u003e Press-fit cartridge design with internal seal disk allows quick swapping during work or travel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Pilot (Namiki)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel Compatibility:\u003c\/strong\u003e Pilot 78G, 78G+, Kakuno, Metropolitan (MR), Explorer, Prera, Lightive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCartridge Dimensions:\u003c\/strong\u003e 58 mm length, 8 mm outer diameter, 6 mm inner aperture\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInk Type:\u003c\/strong\u003e Water-based dye fountain pen ink\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black (Noir)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cdiv class=\"faq-section\"\u003e\n  \u003ch3\u003eAre Pilot IC-100 ink cartridges compatible with standard international fountain pens?\u003c\/h3\u003e\n  \u003cp\u003eNo. Pilot uses a proprietary cartridge connection diameter (6mm inner aperture \/ 8mm outer diameter) engineered exclusively for Pilot and Namiki fountain pens, including the 78G+, Kakuno, and Metropolitan. They do not fit standard international short or long fountain pens.\u003c\/p\u003e\n\n  \u003ch3\u003eCan I use this ink with extra-fine (EF) and fine (F) nibs without clogging?\u003c\/h3\u003e\n  \u003cp\u003eYes. Pilot ink is pH-neutral and water-based, specifically developed to maintain stable capillary flow through narrow Japanese nib feeds without drying out or causing sediment buildup.\u003c\/p\u003e\n\n  \u003ch3\u003eHow do I install the Pilot IC-100 cartridge into the Pilot 78G+?\u003c\/h3\u003e\n  \u003cp\u003eRemove the pen barrel, hold the cartridge with the sealed opening pointing toward the nib section, and push straight in firmly until the internal seal puncture disk dislodges. Keep the pen tip facing down for 30–60 seconds to allow the feed to saturate.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Pilot","offers":[{"title":"A","offer_id":69107111034914,"sku":"PILOT-INK-78G-1","price":15.0,"currency_code":"USD","in_stock":true},{"title":"B","offer_id":69107111067682,"sku":"PILOT-INK-78G-2","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0902\/3045\/6354\/files\/IMG_20261022_103543.jpg?v=1792638862","url":"https:\/\/www.xypen.com\/products\/pilot-78g-fountain-pen-ink-cartridges","provider":"XYPen","version":"1.0","type":"link"}