to print specific data by button

Hi, i have attached a file. there are several invoices separated by empty rows. when i go to print on a single invoice on A4 paper then it makes out of order as invoice size are not same in rows, I want such code to print one empty row to next empty row on a page, then again next empty row to another next empty row on a another page, this will continue to last invoice in this sheet.. for example u can see the attachement.