HP 3600

https://www.experts-exchange.com/questions/29057043/HP-Laserjet-Color-Printer-color-alignment-issue.html

https://h30434.www3.hp.com/t5/LaserJet-Printing/HP-Color-LaserJet-CP1518ni-COLORS-NOT-ALIGNED/td-p/1935919

https://superuser.com/questions/41092/hp-color-laserjet-2605dn-color-alignment-issue

http://www.reeves-hall.net/tech-gadgets/fixing-washed-out-colour-on-hp-color-laserjet-2605/

http://printers-repair.blogspot.com/2014/01/hp-color-laserjet-2605-colours-out-of.html