Brother GTX600NB Instruction Manual page 96

Create print data (ARX6 file)
Save the image data and print settings as a set of print data in ARX6 file format.
The following will be made available if the print data is converted into an ARX6 file:
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Image data and print settings can be put together and stored.
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Without connection to a PC, the printing can be performed directly from a USB flash memory.
<TIPS>
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Image editing is unavailable for any ARX6 file. As such, save your image data for an editing purpose in advance.
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For file output, there are some cases where neither file output destination nor extension cannot be specified by the [Print to file]
command. Be sure to use the printer driver "Brother GTX-6 FileOutput".
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For details of directly sending data to the printer from an application, ☞"5-6-2. Sending print data from applications >>P.5-24"
(1) In the menu bar, select [File] > [Print] > [Color Management].
(2) Make the settings as follows:
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[Document Profile]: [sRGB IEC61966-2.1]
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[Color Handling]: [Let Illustrator determine colors]
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[Printer Profile]: [sRGB IEC61966-2.1]
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[Rendering Intent]: [Relative Colorimetric]
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Creating print data