Oki Data CONFIDENTIAL
2. DESCRIPTION OF OPERATION
44871001TH Rev.6
2-9
2.3 Toner entrance detection
2.3.1 Toner sensor detection principle
Toner low is detected by the toner sensor (reflect sensor) installed in the printer. The light
shield plate is installed in the ID, and its rotation is synchronized with mixing of toner. If the
light shield plate or toner sensor is dirty with toner or something, or the ID unit and the toner
sensor are facing each other at an improper position due to improper setting of the ID unit or
any reasons, toner low cannot be detected correctly, and a toner sensor error occurs.
Light board
Toner sensor
2.3.2 Toner count principle
After the image data is transformed into binary data which can be printed by the printer, the
data is counted as print dot number by LSI. The amount of the used toner is calculated from
this count value, and the residual amount is displayed on the menu.
Toner LOW detection (residual amount display on LCD) by the toner sensor is to detect a certain
amount of the reduction of the toner left in ID.
Summary of Contents for MB461MFP
Page 1: ...MB461 MB471 MB491 MB491 MB491 LP MPS4200mb MPS4700mb Maintenance Manual 031314C ...
Page 72: ...Oki Data CONFIDENTIAL 44871001TH Rev 6 3 21 3 MFP INSTALLATION Sample MB471 Sample MB491 ...
Page 114: ...44871001TH Rev 6 4 36 Oki Data CONFIDENTIAL 4 REPLACEMENT OF PARTS ...
Page 138: ...Oki Data CONFIDENTIAL 5 LUBRICATING POINT 5 1 Lubrication point 5 2 ...
