March 2000 © TOSHIBA TEC
5-23
DP120F/DP125F Mechanical Description
(4)
Developer process
This process makes the electrostatic latent image on the drum visible to the human eye
by using toner.
Doctor blade
Toner
Sleeve roller
Magnetic roller
OPC drum
Fig. 5-3-22
05-03-22
The developer process is configured by the magnetic roller which rotates at a high speed,
the sleeve roller which is located on the outside of the magnetic roller, and the doctor
blade.
The main components of toner are magnetic powder and resin, and are given a negative
charge by the friction. Therefore, the toner adheres to the drum on the areas which have
been irradiated by the laser beam and so creates a visible image.
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 ...