I got 2 printers for my office use, printing & flatbelt scanning/copying is good initially , But when used Adf for scanning and copying there was a problem ADF is capable to handle only normal A4 size paper when I used letter pads of slightly higher GSM then we get different shapes and portions of scanning or copying. Faced this issue in both printers. Raised many a service calls and finally hp service unable to fix the issue even after replacing mother boards and scanner