TVS RP-45 roll paper printing

I have a bill format made thorough crystalreports where the page width is 4 inch and height is dynamic[I make it 2 inch, I don't know how to make it dynamic].
printer is TVS RP-45 Justbill printer.
printer is wasting lots of paper by ejecting paper after printing,
please suggest the way to stop the paper waste.
Any other way except crystalreporting will be helpful for me.
My Code is wrtten in c#2.0 winforms, database sql server 2005.
stucture of my report is

Report Header Section
                      Bill no : 101
______________________________________________
Detail Section
Item Code               Qty           Amount
[ItemCode]             [Qty]         [Amount]
______________________________________________
Report Footer Section
Grand Total                      [GrandTotal]
______________________________________________

My three section is taking around 2 inch height so I set the Height of the paper to 2 inch,
But still lots of paper is wasted. Paper height is now multiply by 2 if there is more than 1 item.
[My Paper is a Roll Paper where Height is not fixed, it should depends on No. of Item to be sold]

Whatever might be the way, but I need to print the bill without wasting any paper.
Please Please Please help!

Tags: C# (C# 2.0), SQL Server 2005, SQL Server, Printing, CrystalReports