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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.
UNINET IMAGING INC. • BROTHER 1240/1650 • ASSEMBLING THE TONER CARTRIDGEUNINET IMAGING INC. • BROTHER 1240/1650 • DISASSEMBLING THE TONER CARTRIDGE
HP P4014, P4015 & P4045 CARTRIDGE REMANUFACTURING INSTRUCTIONS
3232 West El Segundo Blvd., Los Angeles, California 90250 USA • Ph +1 310 280 9620 • Fx +1 310 838 7294 • techsupport@uninetimaging.com • www.uninetimaging.com
© 2008 UniNet Imaging Inc. All Trademark names are property of their respective owners. Product brand names mentioned are intended to show compatibility only. UniNet Imaging does not warrant downloaded information.
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