UNINETIMAGINGHP P4014,INCINC. . •P4015• BROTHER& P40451240/1650CARTRIDGE REMANUFACTURING• • DISASSEMBLINGINSTRUCTIONSTHETHETONERCARTRIDGE
In the sixth step (fusing block) the image is then fused on to the paper by the fuser assembly, which is comprised of the upper fixing film assembly and the lower fuser roller. The paper passes between a heated upper fixing film assembly and a soft lower rubber roller. The upper heated element then melts the toner into the paper. The fixing film assembly consists of a Teflon sleeve with a ceramic heating element inside. These fusers are a bit different in that they have a Brush which has a DC Bias charge on it to help keep the film clean.
In the seventh step (Drum cleaning block) the OPC drum is cleaned. On average, approximately 95% of the toner is trans- ferred to the paper during the print cycle. As the drum rotates during printing, the remaining 5% of the toner that is on the OPC drum is cleaned off the drum by the wiper blade. It is then guided into the waste chamber by the recovery blade, and stored in the waste chamber.
Step 8 is where the residual charge is eliminated. Here is where there is a major difference from previous HP car- tridges/printers. In all previous PCR based cartridges, the Primary Charge Roller places an AC voltage across the drum surface that erases any residual charges left on the drum sur- face.
These machines use the new second laser beam to eliminate the residual charges. This drum charge elimination is only turned on during the last rotation period of the drum.
With the higher speeds of these new machines, my guess is that using the PCR to erase the residual charges was not effi- cient at these speeds... This new laser process is.
SUMMIT
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