Patent ID: RE38926

Claim:
An ink jet printer comprising: a printer case having a print area where printing upon a sheet is permitted and a nonprint area where printing upon a sheet is not permitted, a carriage slideably mounted to said printer case so as to slide through said print area and said nonprint area of said printer case; an ink cartridge mounted on said carriage; a lever pivotably attached to said carriage for attaching and detaching the ink cartridge from said carriage, said lever being pivotable between an open position where the ink cartridge is detached from the carriage and a closed position where the ink cartridge is attached to the carriage; and a lip attached to said printer case and positioned above said lever and within said print area for preventing said lever from detachment of said ink cartridge when said carriage is positioned within said print area, and for abutting said lever to prevent said carriage from moving from said nonprint area to said print area when said lever is in the open position.