O'Neil microFlash Series ESC B, ESC E Accept Compressed Graphics, SO Set Double Wide Print

ESC B, ESC E Accept Compressed Graphics

Format:	ESC B		Format	ESC E
Dec:	27	66	Dec:	27	69
Hex:	1B	42	Hex	1B	45

Function: Accepts compressed graphics data. Then it will uncompress and print.

Each compressed dotline (using a run-length encoding scheme) is preceded by an uppercase “G.” Each uncompressed dotline is preceded by an upper case “U.” Vertical white space (where several consecutive dotlines have not been printing) can be efficiently handled using an upper case “A” followed by a single byte count of the number of dotlines to advance.

Compressed dotlines use a single graphics byte, followed by the number of times that byte is to be repeated. Once the compressed graphics data command (ESC B) is received, each dotline must be preceded by the “G” or “U,” or an “A” may be sent followed by the number of lines to advance.

When all data has been sent, the final bytes must be ESC E to exit compressed graphics data.

Compressed graphics mode requires a graphic image the same width as the print head in use (the microFlash3 has 576 bits across a single line, the microFlash2/2t has 384 bits and the microFlash2i has 240 bits microFlash4t has 832 bits across a single line).

SO Set Double Wide Print

Format: SO

Dec:14

Hex: OE

Function: Will print the current font in double width until an SI is received (single wide printing) or a carriage return is received.

SI Set Single Wide Print

Format: SI

Dec:15

Hex: OF

Function: Will print the current font in single width.

54 ∙ Custom Receipts and Labels User Manual and Technical Guide The O'Neil microFlash Series of Printers