Ricoh GH2220 UV Ink Damper
type: Product
description: The Ricoh GH2220 UV Ink Damper is a replacement ink damper for industrial inkjet printers using the Ricoh GH2220 printhead. The damper regulates ink back-pressure between the ink supply and the GH2220 printhead, buffers pressure fluctuations caused by carriage movement, and filters particles from the ink before they reach the nozzle channels. Compatible with UV-curable, solvent, and aqueous ink systems on Oric, WER, Winjet, Yuxunda, Xante, Ricoh DTG, Colorjet, and Gunsjet GH2220-based printers. Replace the damper at every GH2220 printhead installation and on a scheduled maintenance interval. Product Details Specification Detail Compatible printhead Ricoh GH2220 Ink compatibility UV-curable, solvent, and aqueous inks Function Ink back-pressure regulation, pressure stabilisation, particle filtration Replacement interval Replace at every printhead installation; replace every few months in production use What Does the GH2220 Damper Do? The GH2220 printhead requires a precisely controlled negative back-pressure at its ink inlet to maintain stable ink menisci at each nozzle opening. Without correct back-pressure — maintained by the damper's internal membrane — ink floods through the nozzles at rest (positive pressure) or air is drawn into the nozzle channels (excessive negative pressure). Both conditions cause print quality failure. The damper also absorbs the rapid pressure fluctuations caused by carriage acceleration and deceleration during printing, preventing those spikes from reaching the printhead and causing droplet size variation and banding. A secondary function is particle filtration — the damper's internal screen traps particles before they can reach and score the GH2220's precision silicon nozzle plate. Signs the GH2220 Damper Needs Replacing • Banding or streaking that persists despite cleaning cycles — pressure instability from a failed damper membrane • Ink leaking from the damper body — seal failure • Air bubbles in the ink supply line after the damper — m…
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