There's a round toner cap hidden inside the side panel of the cartridge. Looking at the cartridge with the foldable handle facing you (the green drum side facing away), go to the right side and remove 2 screws. Slide that cover off along the post that protrudes out a bit. Under that cover, look for a round plug the size of a nickel. If you have strong fingernails you can slowly pry it out. Otherwise use something like a credit card to wedge it out. A metal screwdriver can gouge the plastic, so be careful. Once the plug is off, pour in toner w/ a funnel. Easy!
The above trick will work for Samsung ML-2245 or Brother HL-2140 or HP P1005 ???
Is there any chip on laser printer to stop using refilled cartridges like modern inkjet printers ?
Or just pour the ink and refill the cartridge and ready to go ?