How to separate Print report in Odoo 10?
You try this code for create two different button with same code but change string and Id.
<report 
        id="report_sale_order"
        string="Quotation"
        model="sale.order" 
        report_type="qweb-pdf"
        file="sale.report_saleorder" 
        name="sale.report_saleorder" 
    />
In Sale Module, We Create Sale Order and Quotation Reports. Both Reports are displayed in print button. We need to separate that reports based on Quotation and Sale Order. 
We Using same Model name for sale and Quotation but write different view file.