Crystal report printing problem on thermal paper

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C#

I designed one crystal report for printing receipts(items) for thermal printer. But whenever I am giving printing, printer is taking print page from center by default.Every time I have to change that when I am giving print. Here in printing I can't set height of paper because that is continuous paper roll.Here page break will depend on the items what I entered. So is there any option to change that setting. I am using C# of visual studio 2015 and crystal reports.

What I have tried:

I googled for that, but came with not suitable result.