Fujitsu PRN608-S user manual Escape Sequences Ascii Function

PRN608-S

[Description] When the printer controller receives a byte that is –Y to –2 (Decimal 256-Y to 254) the following data is compressed data. The number of compressed graphic bytes is the negative value.

This means:

If Y = -10 (Decimal 246) the next 10 bytes is compressed data.

The compressed data is as follows.

When a data byte is 0 (no dots activated) the next byte received is the number of bytes that are 0. All other data is send as non compressed.

A very few lines cannot be compressed. These will if you try to compress them be longer than the non- compressed line. These must therefore be send as non-compressed data.

3.8.45 Escape sequences, overview.
	ESCAPE SEQUENCES,
	ASCII	FUNCTION
	NUL	Small Font
	SOH	Low Font
	STX	Narrow Font
	ETX	Normal Font
	EOT	Wide Font
	ENQ	High Font
	ACK	Large Font
	BEL	Xlarge Font
	LF	Line Feed
	VT	Print barcode
	FF	Forward feed
	SO	Reverse off
	SI	Reverse on
	DLE	Underline off
	DC1	Underline on
	DC2	Bold off
	DC3	Bold on
	DC4	Italic off
	NAK	Italic on
	SYN	Initialize printer

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