Description; This selects the compression mode. Data compression is only enabled with raster graphic transfer data.; Definition of {n}- Page 23

Brother QL-700 Raster Command Reference

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Word のしおり
background image

 

Description 

This selects the compression mode. Data compression is only enabled with raster 

graphic transfer data. 

Definition of {n} 

No-compression mode    (Enabled) 

Reserved                                (Disabled) 

TIFF 

                (QL-580N/650TD/1050/1060N) 

    In case QL-650TD, only enabled with serial 

interface 

  I

n case QL-580N/1060N, serial and LAN 

interface should set TIFF option. 

TIFF(Pack Bits)

 

1. 1-byte unit 

When the same data is repeated, the number of repetitions and the one-byte 

data are specified. 

When the data is different, the number of data items and all data are specified. 

.When the same data is repeated, the number of data units is specified as the 

actual number minus 1, expressed as a negative number. 

When the number of different data units is specified, that number of bytes minus 

1 is expressed as a positive number.   

.If the above process results in more than 90 bytes of compressed data, the data 

is treated as being all different. As a result, there are 91 bytes, including the 1 

byte specifying the data length. 

 

Example:  Compression example 

Without compression   

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 

00 00 00 00 00 22 22 23 BA BF A2 22 2B ……

 

 

With compression

 

 

ED 00 FF 22 05 23 BA BF A2 22 2B … 

a

     

b

       

c

                         

 

a.  00H continues for 20 bytes, so 20 Dec -> 19 Dec -> 13 Hex, made into a 

negative number ED Hex. 

Therefore, ED 00 

b.  22H continues for 2 bytes, so 2 Dec -> 1 Dec -> 1 Hex, made into a negative 

number FF Hex. 

Therefore, FF 22 

c.  The following 6 bytes remain unchanged. 6 Dec-> 5 Dec ->5 Hex.   

Therefore, 05 23 BA BF A2 22 2B 

This continues for up to 90 bytes. Even if the remainder of the 90 bytes consists 

only of 00 Hex, it cannot be omitted. (In case QL-1050, 162 bytes) 

 

Brother QL-500/550/560/570/580N/650TD/700/1050/1060N Command Reference 

 

22

Detailed Information for Brother QL-700 Raster Command Reference

Lists of information found in Brother QL-700 Raster Command Reference - Page 23

  • 1. 1-byte unit When the same data is repeated, the number of repetitions and the one-byte data are specified.

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