ALV GRID and ALV List Header Headings Issue

Dear Experts,

I am facing a problem which is explained below.
I have a report with the ALV GRID OUTPUT. It contains the header text as shown in the attached screenshot.
When I want to see the print preview of it. The Header text is not shown in LIST OUTPUT as it appears on GRID OUTPUT.

Other issue is I want to display 10 rows per page and want to get print. How to achieve this.

Please advice,

Thanks,
MAN