Its a bit of work, but for printouts that don't look exactly like the form you have two options:

Create a form that looks like you want the print out to be. When the user chooses to print, navigate them to that form and export it to PDF or print it from the browser.

Create an SSRS report that looks exactly like what you want. When the user clicks a print button on your form, call into the SSRS Service Instance to generate a PDF of this report.

@ccts 

You might also want to check out this link;

https://community.k2.com/t5/K2-Five/Is-there-a-way-to-print-a-workflow/m-p/111852#M3590