Product Name: Mpc2550 Color Copier Toner Mpc2030 2050 2051 2550 2551 2530 for Ricoh Model NO.: MPC2550 copier toner Combination: One Set: Cmyk Specie: Bulk Toner Powder Is Available Feature: Compatible For Printer Brand: Ricoh Toner Powder: Japan Cartridge: 100% Brand New Color: Cmyk: Cyan/Magenta/Yellow/Black Version: Universal Advantage: Factory Price with Premium Quality Delivery Time: 3-7 Working Days After Received Payment Certifications: SGS Net Weight: Bk:215g/Cmy:135g for Use in: Mpc2030 2050 2051 2550 2551 2530 Trademark: DORIS Transport Package: Neutral English Packing and Customized Packing Origin: China HS Code: 3707902000 Product Description DORISHow to judge premium color tonerFactorPerformanceColorHuecolor consistencySaturatevivid, clearBrightvery shiningBlackness & Chromaideal value controlled around 1.48Bottom ashideal value controlled around 0.05-0.06, above 0.06, the printing will be not clear.Defective ratenormal range between 5%-7%, beyond this range, this toner particles may become waste power, on the one hand, reduce printing pages, on the other, shorten the developer life time.DPIif low resolution, the printing quanlity will be not clear, bad appearance.Fixingfixing fastness standard above 90%Ghostingdouble image is affected by conductivity and print medium