Basic Timing For Nozzle Check And Head Cleaning - Epson CW-C6000 Series Technical Reference Manual

Basic Timing for Nozzle Check and Head Cleaning

The results of the previous nozzle check are applied to the clogged nozzle detected signal.
Nozzle checks are not only executed by the clogged nozzle check signal. They can also be executed automati-
cally in the printer settings.
For this reason, by reading the clogged nozzle detected signal (pin 24) after executing the missing dot check sig-
nal, the status of the printer can be detected.
In addition, please check the head maintenance signal (pin 21) to make sure that head maintenance is not in
progress, before transmitting the nozzle check instruction.
The head maintenance signal (pin 21) is asserted during a nozzle check or head cleaning.
The steps from nozzle check through head cleaning are described below.
1
Check the head maintenance signal to make sure that head maintenance (= nozzle
check or head cleaning) is not in progress, and check the error signal to make sure
that an error has not occurred.
2
Transmit the clogged nozzle check to perform a nozzle check.
3
Check the head maintenance signal to make sure that head maintenance is not in
progress, and then check the clogged nozzle detected signal to check for clogged
nozzles.
4
If a clogged nozzle is discovered in step 3, transmit the head cleaning (pin 15) as nec-
essary to perform head cleaning.
Q
NOTE
50
If it is unclear whether a nozzle is clogged, such as when a nozzle status unclear warning is
issued, the correct value may not be obtained.