Image Creation Process - Konica Minolta BizHub C360 Service Manual

6. IMAGE CREATION PROCESS

6. IMAGE CREATION PROCESS
[1] Photoelectric
conversion
[10] Transfer belt cleaning
[2] Printer image
processing
[3] Photo
conductor
[4] Photo conductor
charging
[5] Laser
exposure
Photoelectric
[1]
conversion
Printer image
[2]
processing
[3] Photo conductor
Photo conductor
[4]
charging
[5] Laser exposure
[6] Developing
[7] 1st image transfer
16
[7] 1st image transfer
Y M C
[6] Developing
• The light reflected off the surface of the original is separated into dif-
ferent colors using the color filters (R, G, and B); CCD then converts
it into a corresponding electric signal and outputs the signal to the IR
imaging processing section.
• The electric signal is converted to digital image signals. After going
through some corrections, video signals (C, M, Y, and K) are output to
the printer image processing section.
• D/A conversion will be performed after the VIDEO signals (Y, M, C, k)
are corrected. This data will control the emission of the laser diode.
• The image of the original projected onto the surface of the photo con-
ductor is changed to a corresponding electrostatic latent image.
• Supply DC ( - ) charge on the photo conductor.
• Expose photo conductor to a laser beam to develop electrostatic
latent image.
• The toner, agitated and negatively charged in the developer mixing
chamber, is attracted onto the electrostatic latent image formed on
the surface of the photo conductor. It is thereby changed to a visible,
developed image.
• AC and DC negative bias voltages are applied to the developing
roller, thereby preventing toner from sticking to the background image
portion.
• A DC positive voltage is applied to the backside of the transfer belt,
thereby allowing the visible, developed image on the surface of each
of the photo conductors (Y, M, C, and K) to be transferred onto the
transfer belt.
Theory of Operation Ver. 1.0 Jul. 2009
[15] Paper exit
K
[11] Main erase
[12] Photo conductor
cleaning
[13] Fusing
[9] Paper
separation
[8] 2nd image
transfer
[14] Duplex
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