3.LASER EXPOSURE
The processed data from the scanned original is retrieved from the hard disk and transferred to the drum by four laser beams, which form an electrostatic latent image on the drum surface. The amount of charge remaining as a latent image on the drum depends on the laser beam intensity, which is controlled by the laser diode board (LDB).
4.DRUM POTENTIAL SENSOR
The drum potential sensor detects the electric potential on the drum to correct various process control elements.
5.DEVELOPMENT
The magnetic developer brush on the development rollers comes in contact with the latent image on the drum surface. Toner particles are electrostatically attracted to the areas of the drum surface where the laser reduced the negative charge on the drum.
6.IMAGE TRANSFER
Paper is fed to the area between the drum surface and the transfer belt at the proper time to align the copy paper and the developed image on the drum. Then, the transfer bias roller and brush apply a high positive charge to the reverse side of the paper through the transfer belt. This positive charge pulls the toner particles from the drum to the paper. At the same time, the paper is electrically attracted to the transfer belt.
7.PAPER SEPARATION
Paper separates from the drum as a result of the electrical attraction between the paper and the transfer belt. The
8.ID SENSOR
The laser forms a sensor pattern on the drum surface. The ID sensor measures the reflectivity of the pattern. The output signal is one of the factors used for toner supply control.
9.CLEANING
The cleaning brush removes toner remaining on the drum after image transfer and the cleaning blade scrapes off all remaining toner.
10.QUENCHING
The light from the quenching lamp electrically neutralizes the charge on the drum surface.
B070/B071 | PTM |
