March 2000 © TOSHIBA TEC
5-17
DP120F/DP125F Mechanical Description
3.3.3 Image Formation
A laser beam scans horizontally by the Polygon mirror driven by the Polygon motor.
The Polygon mirror has six surfaces and the laser beam scans 6 lines on the drum when the
Polygon mirror completes one rotation.
The figure below shows the print image when the laser beam controlled by the laser diode drive
signal from the Main PBA scans 1 line on the drum not being rotated. With this facsimile, toner
is attracted to the area where the laser beam strikes the drum.
Drum
Polygon mirror
F
θ
lens
Fig. 5-3-12
05-03-12
LD
PRINTING IMAGE
Black level
(Laser is ON)
White level
(Laser is OFF)
Fig. 5-3-13
05-03-13
Summary of Contents for DP120F
Page 1: ...PLAINPAPERFACSIMILE File No 31200001 R0112216901 TTEC ...
Page 401: ...DP120F DP125F Circuit Description 7 92 March 2000 TOSHIBA TEC 07 05 00 Fig 7 5 1 ...
Page 656: ...DP120F DP125F Troubleshooting 11 44 March 2000 TOSHIBA TEC ...
Page 700: ...DP120F DP125F Appendix 12 2 March 2000 TOSHIBA TEC 1 2 Error Count List ...
Page 701: ...March 2000 TOSHIBA TEC 12 3 DP120F DP125F Appendix 1 3 Function List for Maintenance ...
Page 702: ...DP120F DP125F Appendix 12 4 March 2000 TOSHIBA TEC 1 4 Drum Unit ...
Page 703: ...March 2000 TOSHIBA TEC 12 5 DP120F DP125F Appendix 1 5 Memory Dump List ...
Page 706: ...SHUWA SHIBA PARK BLDG A 2 4 1 SHIBA KOEN MINATO KU TOKYO 105 8524 JAPAN ...