Source Technologies, LLC ST9612 Secure MICR Printer User’s Guide
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4. Quality Issues
A high quality MICR document can be read by bank reader/sorter equipment many times
with no readability issues and does not result in damage to bank equipment. This quality
is the result of a well designed printer, an originally manufactured MICR toner cartridge
and high quality check stock.

Printer Features

Your Secure MICR Printer is equipped with some features to ensure high quality MICR
documents.
Paper Type
When the printer senses the presence of the ST MICR cartridge, internal
operating points that affect the print engine and fuse grade are optimized for
MICR documents and Source Technologies’ MICR toner. Paper type settings, if
selected through a printer driver (ex. Transparency) do not affect operating points
so that the printer remains optimized for MICR printing.
Print Density
When the printer senses the presence of the ST MICR cartridge, the internal print
density is controlled for MICR printing. Darker density settings of 9 and 10 do
print darker, but settings below the default value of 8 do not change print density.
MICR Toner Low
When MICR toner is low, the printer stops and the user is prompted. We
recommend shaking the cartridge to prolong its life. When low toner is sensed,
there is enough toner left to print additional quality MICR documents. Low toner
occurs at approximately the 90% point of cartridge life.
MICR Toner Empty
When the toner in the cartridge is determined to be too low to continue, the
printer stops. To continue printing, a new cartridge will need to be installed.

MICR Toner

Use only Source Technologies’ MICR toner when printing MICR documents. It is
specifically engineered to print quality MICR documents with your printer. The printer’s
MICR toner sensor is designed to work with the Source Technologies’ MICR toner
cartridge to prevent printing checks with regular toner present. Your Source
Technologies MICR printer can be used for general office printing. If a MICR print job
begins and the printer has a regular toner cartridge present, the printer will stop and
prompt the operator to install a MICR toner cartridge.
Source Technologies does not recommend the use of refilled MICR toner cartridges.
Refilled cartridges may result in expensive printer repairs and bank check reject fees
due to inferior MICR toner formulation.