EPSON Imaging Technology Center Page: 43
Revision: 1 10/6/00
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
