Toner Cartridge (Tc) Life Control; Image Refresh Mode - Konica Minolta magicolor 1600W Service Manual

Theory of operation
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Theory of Operation Ver. 1.0 Nov. 2008
11.3.6

Toner cartridge (TC) life control

A. Toner cartridge detection and new cartridge detection timing
• The machine attempts to perform a detection sequence when the front door is closed.
B. Toner cartridge detection
• The machine accesses the TC detection board (CSIC) to check for data stored in it.
Using that data, the machine determines whether or not a toner cartridge is loaded.
C. New Toner cartridge detection
• After a toner cartridge has been detected, the machine determines whether it is new or
not based on the data acquired.
D. Toner cartridge near empty and empty condition detection
• The amount of toner consumed is calculated from the number of dots produced for one
printed page by the controller. A toner near empty condition and a toner empty condition
are thereby detected.
<Toner near empty decision>
1. The machine determines that there is a toner near empty condition when the image
counter and dot counter reach the life value.
<Toner empty decision>
2. The machine determines that there is a toner empty condition when a predeter-
mined number of printed pages are produced after the toner near empty condition
has been detected.
11.3.7

Image refresh mode

• The supply roller of the toner cartridge contacts the developing roller and is thereby
deformed during a long period of shelf time.
• If a photo image or a solid image is printed after the supply roller is deformed, faint lines
can at times occur at a pitch of 24 mm in the main scanning direction.
• The image refresh mode is made available to lessen this phenomenon.
• Use of this mode helps make less noticeable the faint lines occurring at a pitch of 24 mm
in the main scanning direction.
• Executing the image refresh mode rotates the toner cartridge rack.
(1) Operation overview
• The operation of the image refresh mode varies depending on the condition of the toner
cartridge.
Toner cartridge evaluation
If there is at least one toner
cartridge, with which 30 or
less printed pages have
been produced since the
detection of a new toner
cartridge?
• The developing roller is rotated for about two minutes for one color of toner.
• The developing roller is rotated for the toner cartridges of toner
of all colors.
No
• The developing roller is to be rotated for the period of time corre-
sponding to producing ten printed pages.
• The developing roller is rotated for the specific toner cartridge in
question. The developing roller is to be rotated for the period of
time corresponding to producing 40 printed pages.
Yes
• If there are toner cartridges of toner of two or more colors
involved, the image refresh mode is carried out for the toner car-
tridge of toner of one color before that for the toner cartridge of
toner of another color is started.
11. Developing section
Operation overview
37

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