Epson TM-C7500 series Technical Reference Manual page 23

Setting the Nozzle Verification Technology Enable / Disable
Enable / Disable of Nozzle Verification Technology is set.
The factory setting is "Enable".
Settings
It can be set from the setting menu of the product and PrinterSetting.
See "Setting panel switch" on page 82
Setting Nozzle check interval
When the Nozzle Verification Technology is set to "Enable", a Nozzle Verification Technology is
executed in the following conditions.
• Starting a printing job or per printed sheets specified in the interval of Nozzle check interval
• Power is turned ON
• The maintenance box cover is closed
• The roll paper cover or paper set cover is closed after a paper jam.
Settings
It can be set from the setting menu of the product and PrinterSetting.
Able to set in the unit of pages from 1 to 500
See "Setting panel switch" on page 82
Setting Threshold of clogged nozzles
Set the allowable number of nozzle dropouts when executing a Nozzle Verification Technology.
When the number of nozzle dropouts exceeds the value, a head cleaning is executed.
If the number of clogged nozzles does not reach this value, the dot substitution function is activated
instead of performing head cleaning.
Settings
It can be set from the setting menu of the product and PrinterSetting.
Can be set between 0 to 10 nozzles
See "Setting panel switch" on page 82
 The allowable number of nozzle dropouts is the total for the nozzles 
for all four colors (CMYK).
 The value initially set for the allowable number of nozzle dropouts is "6".
or "PrinterSetting" on page 86
or "PrinterSetting" on page 86
or "PrinterSetting" on page 86
Chapter 1 Product Overview
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