Ricoh D124-17 Service Manual page 782

2. Appendix 2: Service Program Mode
2514 Auto Cleaning Start Threshold DFU
This SP code sets the threshold setting to trigger automatic cleaning, based on the mist
count.
• The nozzle condition deteriorates while the printer is in use due to ink mist that starts
• Paper dust can accumulate and also interfere with the operation of the nozzles.
The illustration above shows droplets of mist
collect near the nozzle arrays. This undesirable condition is corrected with periodic
automatic cleanings while the printer is in use, greatly extending the length of time the
machine can be used without operator intervention.
• A "mist count" triggers automatic cleaning. This mist count can be extended to
• The count is adjusted depending on the width of the paper and total print area. For
• Paper dust count. The width of the paper has been taken into account so the
1 Mist: Before Capping
[1 to 4294967295/18000000/1 nl]
2 Mist: Between Pages
[1 to 4294967295/20000000/1 nl]
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to cling to the nozzles and accumulate inside the suction caps of the maintenance
unit.
increase the timing between automatic cleanings.
example, the count for very wide paper is much lower that the count for narrower
paper because of the difference in the total area covered.
threshold has been extended from 500 to 736 sheets printed, and unneeded
coefficients have been eliminated. The paper dust count (the total number of pages
printed, cutting count) are used to determine when cleaning is done for paper dust.
and paper dust and fibers that can