A:AnswerThe docking station would need to have a USB type A port. You could connect to such a port with a standard USB printer cable. (USB type A to USB type B).
A:AnswerTry installing the full software from this link:
https://support.hp.com/us-en/drivers/selfservice/hp-envy-photo-6200-all-in-one-printer-series/9073045
Download this driver:
HP ENVY Photo 6200 All-in-One Print and Scan Driver and Accessories
A:AnswerThe following papers are supported with the Envy Photo 6255:
Media sizes supported (metric)
A4; A5; B5; DL; C6; A6
Media sizes supported (U.S. standard)
Letter, 4 x 5 in, 4 x 6 in, 5 x 7 in, 8 x 10 in, No. 10 envelopes
A:AnswerDo you mean the HP Eprint email address? Here is the link for the manual. Page 49 discussed web services in detail:
http://h10032.www1.hp.com/ctg/Manual/c05632129