GRAYSCALE constant
PrintJobOutputType
const GRAYSCALE
Specifies that the printed content is grayscale. Set the output type to this value when your printable content contains no color—for example, it’s black text only. The default paper is Letter/A4. Output is grayscale quality, duplex. This content type can produce a performance improvement in some cases.
Implementation
static const GRAYSCALE = PrintJobOutputType._internal(2, 2);