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November 2003 © TOSHIBA TEC 13 - 5 e-STUDIO3511/4511 REVOLVER UNIT
13
13.6 Operation
13.6.1 Home position detection
The revolver unit detects its home position at every warming-up after the power is turned ON or the front
cover is opened/closed since this unit is driven by the stepping motor. The home position is the point
where the revolver home position sensor detects the shielded part in the revolver unit.
13.6.2 Escape position movement
The color developer units (C, M and Y) are escaped from the developing position when developing black
image by rotating the revolver unit. This escaping movement is performed after every home position
detection. The escape position is where these color developer units are during warming-up. The movement
always starts from the escape position when printing starts.
13.6.3 During warming-up
The home position detection and escape position movement are performed consecutively during warming-
up. Then the revolver unit operations such as toner supply and image quality control are performed
according to the conditions of the equipment.
13.6.4 During printing
The revolver unit moves in order, as follows:
Escape position (black image development) → Cyan image developing position → Magenta image
developing position → Yellow image developing position → Escape position (printing completed)
In addition to the basic movement mentioned above, the revolver operations such as toner supply and
image quality control are performed according to the conditions of the equipment.
1. Image quality control is performed immediately before the printing operation according to the conditions
of the equipment.
2. The revolver unit stays at the escape position to perform the black image development.
3. The revolver unit moves to the cyan image developing position after the completion of black image
development.
4. The cyan developer unit is driven and performs developing. At the same time, the density of magenta
toner is detected and the detection result is stored in memory.
5. The revolver unit moves to the magenta image developing position after the completion of cyan
image development.
6. The magenta developer unit is driven and performs developing. At the same time, the density of
yellow toner is detected and the detection result is stored in memory.
7. The revolver unit moves to the yellow developing position after the completion of magenta image
development.
8. The yellow developer unit is driven and performs developing. At the same time, the density of cyan
toner is detected and the detection result is stored in memory.
9. The revolver unit moves to the escape position to perform black image development after the
completion of yellow image development.
10. If any of color toner is judged as the low density, the revolver unit supplies the toner.
11. Procedure 2 to 10 is repeated when printing more than 1 page.
12. Printing finishes. Image quality control is performed according to the conditions of the equipment.