Cool Toner Compatible Toner Cartridge Replacement for HP 202A CF500A 202X M281fdw HP Color Laserjet Pro MFP M281fdw M281cdw M254dw M281fdn M254 M281 202 281cdw 281fdw Toner Printer (Black, 1-Pack)

Q&AQ: How should I choose a right toner cartridge with good quality? A: Firstly, you have to find out the printer model you use. Generally you can see the model number on the printer surface or the package. Secondly, you need to know the basic parameters for a cartridge as below. Page Yield STMC or ISO 19752 are usually employed to evaluate page yields of toner cartridges Image Density This refers to blackness and color degree for cartridges, which will make sure your print outs clearly enough. Ideal Density is 1.3-1.5.BackgroundBackground refers to the cleanness of the blank space on your print outs. More lower on this parameter, better on the printing quality. Fusing refers to the firmness of the toner adhered on the paper. If the toner can be easily erased with your finger from the paper, the fusing is not good. How does Cool Toner make sure their products can meet above parameters? A: Firstly, Cool Toner cartridges are certified with ISO9001, ISO14001, ROHS, STMC and CE, MSDS. Secondly, all of the products have passed strict testing as below. Extensive Environmental Test Low-temperature storage test: -20 ℃~~~~-30℃, stored for 40daysHigh temperature storage test: 50 ℃, stored for 72HAging Test Aging Test of raw materials in high-temperature 50 ℃ and stored for 30 days Advanced equipment X-Rite tester. Environmental Chamber Low Temperature Storage Chamber High Temperature Storage Chamber Unique Technology to guarantee the quality. Absolute Sealing Technology Color Plus Technology Roller Technology Self-cleaning Technology~~~