Gestetner B147, Руководство по обслуживанию

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PROCESS CONTROL
B147/B149/B190 6-18 SM
Toner End Detection
The machine flags the toner end status when one of the conditions below is
detected for a toner color. The messages, “No Toner,” “Replace Toner Cartridge,”
and “Xxxxx,” are displayed; where “Xxxxx” indicates the color, such as cyan.
• V
REF
+ 0.5 V < V
T
(ten times consecutively)
•
The pixel counter counts up the equivalent of 50 A4 sheets of pixels (100%
coverage) since near-end was detected.
However, if fewer pages have been made since near-end than the number
guaranteed with SP 2-212-11 (default: 10 pages), printing will continue.
NOTE: If one of the following conditions is detected 10 consecutive times, the
machine flags a “toner end condition” regardless of the number of pages
printed since near-end.
•
V
REF
+ 1.2 V < V
T
• V
T
> 4.8 V
After the machine detects toner end for black, it cannot print until the toner
cartridge is replaced. If cyan, magenta, or yellow are in a toner end condition
during standby mode, the machine can print with black and white only; color
printing is disabled.
NOTE: If the yellow, cyan, or magenta toner ends during a color printing job, the
job is suspended until toner is supplied. If new color toner is not installed,
the user can print black-and-white jobs but not color jobs.
Toner End Recovery
The machine assumes that the toner cartridge has been replaced if either of the
following occurs when the near-end or end status exists:
•
The upper right cover is opened and closed.
•
The main switch is turned off and on.
The machine then starts to supply toner to the development unit. After supplying
toner, the machine clears the toner near-end or end status if the following
conditions are detected.
•
Vt [0] – Vt [3] > 0.5V
•
Vt – Vref > 0.3V