Toner Cartridge And Imaging Units - Source ST9715 Secure MICR User Manual

Toner Cartridge and Imaging Units

The ST9715 MICR Print Cartridge is comprised of two components: the toner cartridge
and the imaging unit.
Toner cartridges are available in two models depending on the yield: a 1.5K page and a
3K page. The 1.5K model ships with new printers. The 3K model is the normal
replacement model. The projected life in terms of page count is based on a typical 5%
print coverage and continuous print mode. These projected values of 1,500 and 3,000
were certified using the ISO 19752 Yield Testing Methodology. The standard requires
continuous print mode. The projected life is reduced somewhat dependent on the actual
average print-job page count.
The imaging unit contains a majority of the components needed to transfer an image to
paper. The unit also contains a Refuse Bin for storing any waste toner cleaned from the
photoconductor or OPC. In terms of component wear and waste capacity, the IU useful
life should be near 40K or 40,000 pages or sides assuming some duplex printing. The
40K is based on an average print coverage of 5% and an average print job size of three
pages or page sides. Lower actual average print coverage and/or a larger average page
count per job may increase the useful life of the IU. Higher actual average print coverage
above 5% and/or a smaller average page count below three will shorten the useful life.
Internally, the printer automatically adjusts unit alarms or replacement alerts based on
the actual printing factors. If the actual print averages extend the useful life beyond the
40K page forecast, the printer will not exceed 60K due to wear OPC factors. The printer
will stop printing and request a new unit.
The ST9715 MICR printer keeps record of the actual printing modes in terms of average
print job size and the actual average print coverage percentage. The printer internally
adjusts when either the toner cartridge or photoconductor unit needs to be replaced.
The following error messages pertain to the toner and imaging unit.
ST9715 Secure MICR Printer User's Guide
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