Hi Salil,
I found one exporting option that might help. It determines the page length of lines:
IS_PRINT-PRINT_CTRL-PRI_PARAMS-LINCT . ( = number of lines in table gt_grid_output )
And consider the following too:
IS_PRINT-PRINT_CTRL-PRI_PARAMS-PDEST . (output Device)
IS_PRINT-PRINT_CTRL-PRI_PARAMS-PAART . (print format )
You maybe have to override the background print parameters you specify just executing the program.