HP Laserjet 3000 series - #9 Lever, Lock, LeftUpper - RC1_7618_000CN

3d printable replacement part that latches black toner cartridge - upper left
HP Laserjet 3000, 3600, 3800 series

Service Manual and teardown instructions:
http://ridl.cfd.rit.edu/products/manuals/HP/HP_LaserJet_3000_3600_3800_Series_Service_Manual.pdf
Section 7 - Parts and diagrams - internal components:
ref#9 Lever, Lock, LeftUpper - RC1_7618_000CN

*Added slightly thicker version which can be sanded back if having trouble with clean support