· EBEST Type2550/3352 universal drum unit is perfectly compatible with Ricoh Aficio 2550B and 3352 office copiers. 1:1 OEM mold ensures accurate assembly, plug and play without debugging, no identification errors or machine lockup with all firmware versions.· Upgraded moisture-proof photosensitive coating solves common machine defects such as blurry printing and foggy background in humid environments. Stable photoelectric performance avoids imaging failure caused by dampness, delivering clear and solid document output all year round.· Reinforced wear-resistant gear set eliminates abnormal noise and gear jamming faults during high-speed operation, reducing machine driving load and effectively avoiding paper jams and imaging dislocation caused by worn gears.· Advanced anti-ghosting and anti-fading technology maintains stable density during long-term continuous copying, no residual shadows or periodic streaks. It fixes the problem of unadjustable fixed concentration of old machines, ensuring consistent mass printing quality.· Full upgraded dust-proof and leak-proof structure prevents toner overflow and internal machine contamination, avoids black stains on both sides of the drum and dirty back prints, greatly reducing daily cleaning and maintenance frequency.· Smooth low-friction drum surface fits cleaning blades perfectly without scratching core components, effectively extending the service life of the whole machine and lowering long-term office operation costs.· High-precision counting chip matches original sensor logic, displays real remaining service life without false alarms, no sudden shutdown or lockup, greatly reducing after-sales parameter debugging work.· Every batch passes strict real-machine aging and humidity resistance tests. Independent vacuum packaging prevents oxidation and moisture damage, ideal for bulk inventory and ocean transportation, providing cost-effective original-level replacement quality.
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