User manual

e-STUDIO3511/4511 CONTENTS iv November 2003 © TOSHIBA TEC
12. DEVELOPER UNIT ..................................................................................................... 12-1
12.1 General Description ......................................................................................................... 12-1
12.2 Construction ..................................................................................................................... 12-1
12.3 Sectional View.................................................................................................................. 12-2
12.4 Black Toner Cartridge Drive Unit ...................................................................................... 12-3
12.4.1 General descriptions ............................................................................................. 12-3
12.4.2 Toner motor ........................................................................................................... 12-3
12.5 Black Developer Unit........................................................................................................ 12-4
12.5.1 Functions .............................................................................................................. 12-4
12.5.2 Black developer unit drive section ........................................................................ 12-5
12.5.3 Black auto-toner sensor circuit .............................................................................. 12-6
12.5.4 Black developer unit lifting mechanism ................................................................. 12-9
12.6 Color Developer Unit ...................................................................................................... 12-10
12.6.1 Functions ............................................................................................................ 12-10
12.6.2 Color developer unit drive section ....................................................................... 12-11
12.6.3 Color auto-toner sensor circuit ............................................................................ 12-12
12.6.4 Color toner supply ............................................................................................... 12-14
12.7 High-Voltage Transformer Output Control Circuit ........................................................... 12-15
12.8 Disassembly and Replacement...................................................................................... 12-16
13. REVOLVER UNIT ........................................................................................................ 13-1
13.1 General Description ......................................................................................................... 13-1
13.2 Construction ..................................................................................................................... 13-1
13.3 Functions ......................................................................................................................... 13-2
13.4 Drive of Revolver Unit ...................................................................................................... 13-3
13.5 Revolver Motor Drive Circuit ............................................................................................ 13-4
13.5.1 Revolver motor ...................................................................................................... 13-4
13.6 Operation ......................................................................................................................... 13-5
13.6.1 Home position detection ....................................................................................... 13-5
13.6.2 Escape position movement ................................................................................... 13-5
13.6.3 During warming-up................................................................................................ 13-5
13.6.4 During printing....................................................................................................... 13-5
13.6.5 Color toner supply ................................................................................................. 13-6
13.6.6 During image quality control ................................................................................. 13-6
13.7 Disassembly and Replacement........................................................................................ 13-7
14. TRANSFER UNIT ........................................................................................................ 14-1
14.1 General Descriptions ....................................................................................................... 14-1
14.2 Construction ..................................................................................................................... 14-1
14.3 Functions ......................................................................................................................... 14-2
14.4 Outline of 1st transfer ....................................................................................................... 14-4
14.5 Outline of 2nd transfer ...................................................................................................... 14-4
14.6 High-Voltage Power Supply ............................................................................................. 14-5
14.7 Disassembly and Replacement........................................................................................ 14-6