1600/2000/2500 PRINTING
8 - 4
December 2000 © TOSHIBA TEC
(3) Lenses 1 and 2
These lenses perform the following compensations on the laser light reflected by the polygonal mirror.
Equidistant scanning
The reflected laser light on the polygonal
mirror is scanned at the same angle, be-
cause the polygonal mirror is rotated at the
same speed. That is, when the scan is com-
pleted, the dot-pitch on the drum becomes
the wide spaces at the both edges and the
narrow spaces in the center. So, in order to
regularize intervals of dots, laser light is
compensated so that it is scanned on the
drum at equal speeds.
Fig. 8-2-3
Pyramidal error compensation
The reflected face on polygonal mirror is
tilted in either of two directions for the per-
fect vertical direction. Deviation of the laser
light (for the perfect horizontal) caused by
this reflected face's pyramidal error is com-
pensated.
The section's shape of the laser beam on
the drum is compensated.
Fig. 8-2-4
(4) HSYNC detection
The laser light, which is scanned by the any reflected face on the polygonal mirror, is reflected by the
HSYNC detection mirror, and becomes incident to the PIN diode on the laser drive PWA. Then, the
primary scanning synchronizing is formed by detection of the laser light.
Equidistant
Wide
Narrow
F
θ
lens 1
F
θ
lens 2
09-02-03
09-02-04
Mirror plane is tilted
Deviation
Содержание DP1600
Страница 1: ...DIGITALPLAINPAPERCOPIER DP1600 2000 2500 File No 31100011 R0111216600 TTEC ...
Страница 2: ...Copyright 2000 TOSHIBA TEC CORPORATION ...
Страница 21: ...1600 2000 2500 OUTLINE OF THE MACHINE 2 8 December 2000 TOSHIBA TEC B 2 Switches SW2 SW1 02 02 04 ...
Страница 23: ...1600 2000 2500 OUTLINE OF THE MACHINE 2 10 December 2000 TOSHIBA TEC C 1 Motors M1 M3 M5 M7 M6 M4 M2 02 02 06 ...
Страница 145: ...8 PRINTING 8 1 8 1 General Description 8 1 8 2 Structure 8 2 8 3 Laser Diode 8 6 8 4 Disassembly and Replacement 8 7 ...
Страница 231: ...December 2000 TOSHIBA TEC 16 1 1600 2000 2500 PC BOARD 16 BOARD ASSEMBLY 16 1 PWA F MAN 16 01 01 ...
Страница 232: ...1600 2000 2500 PCB BOARD 16 2 December 2000 TOSHIBA TEC 16 2 PWA F RLY 16 02 01 ...
Страница 233: ...December 2000 TOSHIBA TEC 16 3 1600 2000 2500 PC BOARD 16 3 PWA F PIF 16 03 01 ...
Страница 234: ...1600 2000 2500 PCB BOARD 16 4 December 2000 TOSHIBA TEC 16 4 PWA F PNL 16 5 PWA F VR 16 04 01 16 05 01 ...
Страница 236: ...1600 2000 2500 PCB BOARD 16 6 December 2000 TOSHIBA TEC 16 7 PWA F FUS ASD AUD CND TWD SAD models 16 07 01 ...
Страница 237: ...17 WIRE HARNESS CONNECTION DIAGRAMS 17 1 ...
Страница 264: ...1 1 KANDA NISHIKI CHO CHIYODA KU TOKYO 101 8842 JAPAN ...