DP120F/DP125F Mechanical Description
5-24
March 2000 © TOSHIBA TEC
OPC drum
Toner
Recording paper
Transfer charger wire
Fig. 5-3-23
05-03-23
OPC drum
Toner
Recording paper
Discharge wire
Fig. 5-3-24
05-03-24
3.4.3 Transfer Process
This process transfers the toner image formed on the drum surface to the recording paper.
When a high voltage is supplied to the Transfer charger wire, the back side of recording paper is
charged positive by the corona discharge. Then, the toner image on the drum surface is trans-
ferred to the recording paper.
3.4.4 Discharge Process
The discharge process clears the positive charge remained on the back of recording paper.
When a high voltage is supplied to the Discharge wire, the back of recording paper is charged
negative by the corona discharge.
This process is used to prevent an occurrence of print quality problem (black or white spots,
etc.) which might be seen on paper with higher resistance, such as transparencies.
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 ...