Printing Command Details; Null Invalidate; Esc I S Status Information Request - Brother RJ-4030 Software Manual

4. Printing Command Details

NULL Invalidate
ASCII: NULL
Hexadecimal: 00
Description
 Skipped
 If data transmission is to be stopped midway, send the "initialize" command after sending the "invalidate"
command for the appropriate number of bytes to return to the receiving state, where the print buffer is
cleared.
ESC i S Status information request
ASCII: ESC
Hexadecimal: 1B
Description
 Send a request to the printer for status information. For details on the status, refer to the previous section.
 The size is fixed at 32 bytes.
Note
Before sending print data to the printer, this command should be sent once. Since error
information is automatically sent by the printer during printing, do not send this command while
printing.
i S
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Raster Command Reference
4. Printing Command Details