Printer with print engine mounted within paper tray

A printer comprising:

• a housing having mounted therein a pair of guide rails;
• a print media tray arranged to move along the guide rails within the housing;
• a motor assembly configured to move the print media tray along the guide rails to eject and retract the print media tray relative to the housing;
• a print engine mounted within the print media tray, the print engine including an ink cartridge, an ink ejection printhead mounted to the ink cartridge, and a transfer roller upon which ink from the ink ejection printhead is printed;
• and
• a solenoid engaged with the printhead, the solenoid operable to hold the printhead away from the transfer roller and park the printhead against the transfer roller, wherein
• the print engine further includes a plurality of elastomeric ribs attached to the ink cartridge and extending parallel to the printhead, the plurality of elastomeric ribs provided on either side of the printhead and adapted to press against the transfer roller to seal the printhead.