December 2000 © TOSHIBA TEC
3 - 3
1600/2000/2500 COPYING PROCESS
(3) Scanning:
"Scanning" is the process of directing light at
the original, and converting light reflected from
the original to electrical signals.
Light reflected from the original is picked up by
a CCD (charged coupled device), the image in-
formation held by that light is converted to elec-
trical signals (image signals), and the image sig-
nals are sent to the image processor.
(4) Printing
"Printing” is the process of converting the im-
age signals sent from the image processor to
optical signals, and exposing these optical sig-
nals on photosensitive drum.
Image signals from the image processor are
converted to optical signals, and these optical
signals are exposed by a semiconductor laser
to form a static latent image on the photosensi-
tive drum.
03005
CCD board
Scanner control PC
board
Image processor
(Example)
Light intensity
at the CCD
photodetector
Light
Dark
Value of
signals to be
output
255
0
Contrast (differ-
ences in light and
dark) is divided
into 256 steps.
Image
processor
Printing
controll block
Photo-
sensitive
drum
03006
Polygonal mirror
Semiconductor
laser
Fig. 3-2-4
Fig. 3-2-5
Fig. 3-2-6
Summary of Contents for DP1600
Page 1: ...DIGITALPLAINPAPERCOPIER DP1600 2000 2500 File No 31100011 R0111216600 TTEC ...
Page 2: ...Copyright 2000 TOSHIBA TEC CORPORATION ...
Page 232: ...1600 2000 2500 PCB BOARD 16 2 December 2000 TOSHIBA TEC 16 2 PWA F RLY 16 02 01 ...
Page 233: ...December 2000 TOSHIBA TEC 16 3 1600 2000 2500 PC BOARD 16 3 PWA F PIF 16 03 01 ...
Page 237: ...17 WIRE HARNESS CONNECTION DIAGRAMS 17 1 ...
Page 264: ...1 1 KANDA NISHIKI CHO CHIYODA KU TOKYO 101 8842 JAPAN ...