Run-length encoding compression mode

In run-length encoding compression mode, the data is transferred in the following format.

The data to be printed is always transferred in the format (counter) + (data).

If 0 ≤ counter ≤ 127, then the data following the counter is non-compressed data, and the length of the compressed data is (counter)+1 bytes.

If 128 ≤ counter ≤ 255, then the data following the counter is one byte of compressed data, and the compressed data is to be considered as being repeated 257-(counter) times.

3)The printing position in the X direction is set to a position spaced in the positive direction from the present printing position in the X direction by (256 x nH + nL)

x h/3600 inches.

If this command specifies a position in the non-printable area (right margin), the right margin position is set once again to the X direction print position.

4)If image data upon a non-printable region is designated, this designated data is ignored.

The combinations of printing density and command parameters which can be set with the raster graphics of this printer are shown in the following tables:

0.Case of microweave mode off

 

Mode

Parameter

 

 

ESC(e *3

Comment

 

(V x H)

c

v

h

m

n2

 

 

120x120

0/1

30

30

48

00h

expanded to 120x360 by the

 

 

 

 

 

 

 

printer

 

120x360

0/1

30

10

47/48

00h

 

 

120x720

0/1

30

5

47/48

00h

 

 

180x180

0/1/2

20

20

1/8/24

00h

*1 *2

 

180x360

0/1

20

10

1/8/24

00h

*2

 

360x360

0/1/2

10

10

1/8/24

00h

*1 *2

1.Case of microweave mode on

 

 

 

 

 

 

 

 

 

 

 

 

Mode

Parameter

 

 

ESC(e *3

Comment

 

(V x H)

c

v

h

m

n2

 

 

360x360

0/1/2

10

10

1

00h

 

 

720x720

0/1/2

5

5

1

00h

2pass printing

*1 When mode is selected as TIFF(c=2), only m=1 is allowed.

*2 The parameter m=1 is recommended.

*3 In the case that the ESC . command is used only MultiShot Dot (ESC ( e 2 0 0 0) is effective.

Initial State:

Character mode

EPSON Imaging Technology Center

Page: 43

Revision: 1

10/6/00