ESC commands usage in dot-matrix printer driver

[Soju_Varghese]

 Hi,

	I want to develop a linux printer driver for dot matrix printer
which uses the ESC/P commands.I am using cups framework for the printer
driver development. From my understanding if I am using the existing 9 pin
Epson linux driver,the following is the flow. pstops ->cupsomatic-> backend.
There is no filter driver(use of ESC commands) using here, It is directly
using the post script and sending it to the printer.
			If I want to develop a 12 wire dot matrix printer
driver,which supports raster printing and also resident font prinitng. For
graphics printing I can take the 9 pin data and convert it to the 12 pin
data. Corresondingly the ESC commands have to be manipulated. I want to know
where I can get hold of this ESC commands (for verical and horizontal
movement of the head)and data so that I can manipulate the way in which I
want. whether I have to look into "rastertoepson.c" provided in the cups and
the ppd files  present.I am looking into cups.org and linuxprinting.org.
 Thanks in advance
 Regards
Soju
************************************************************************** 
This email (including any attachments) is intended for the sole use of the
intended recipient/s and may contain material that is CONFIDENTIAL AND
PRIVATE COMPANY INFORMATION. Any review or reliance by others or copying or
distribution or forwarding of any or all of the contents in this message is
STRICTLY PROHIBITED. If you are not the intended recipient, please contact
the sender by email and delete all copies; your cooperation in this regard
is appreciated.
**************************************************************************