6.4. Sequential Cooling Flow for USB Connection
Send 200 bytes of Invalid command
Send print data.
Return “NAK” from
cooling.
△
Cooling
The printer is initialized.
Initialize
Printing
Begin
printing without
waiting for a print
command.
Receive data.
The status of the Printer
(media, etc.) is checked
and a response is sent.
Status (response status to status information request)
If there are no problems with
the Printer status (media, etc.),
the data is transmitted. If there
is a problem, an error appears.
Send control code.
Status
(Phase change :
“Printing state”)
Sending display
Send print data.
Send print data.
Send print data.
Send print data.
When cooling is finished,
“Notification: Cooling(finish)”
is returned.
0 packet
0 packet
0 packet
0 packet
Continue reading.
0 packets are returned
while cooling.
Send print data.
Status (Notification:”Cooling(finish)”)
failed
Repeat reading of maximum
and transmission timeout
times. If the transmission
timeout is exceeded, perform
a read, and display the
cooling status if a
high-temperature error is
returned.
Send print data.
×
Status
(Notification:
“Cooling(start)”)
Status information request
Computer (host)
Printer
In order to clear any jobs
with errors remaining in
the printer
Perform a READ.
Perform a READ.
Restart
Brother QL-500/550/560/570/580N/650TD/700/1050/1060N Command Reference
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