One is in the printing program you're using. Make sure your margins and page size are correct. Check all of the options in the program you're using to print twice, three times. If the same program consistently loses 10-15% of the right hand side, you've found your problem. If you are facing the HP Printer not printing left side of page issue then follow these solutions.
How to print a Word document without margins?
In the document you will print without margins, click Layout > Page Setup in the Page Setup group.
In the Page Setup window, change the Top, Bottom, Left and right to 0 under Margins tab, and then click the OK button.
Why is my HP printer not printing the right side of the page?
One is in the programs you are using to print. Make sure the margins and paper size are set properly.
90% of this kind of problem is nothing more than the program having the wrong, incorrect margins or size set. They believe the paper is larger than it is, and are actually printing off the edge
Regards,
Willjoe