How do you refill a HP Laserjet 4L with toner please? -

I have toner available and would like to be able to refill rather than replace the toner and drum assembly in the printer.

You make a hole. Pour in the toner, with a small funnel. Block the hole, with tape or rubber bung. That s it. Google quot;refill laser cartridgequot; and you will find several sites with instructions

Toner molecules are all shaped differently. Don t do it! Pay the $50 for the remanufactured cartridge and don t wreck your printer

Hi, With great care as it is horrible to get off. plenty of newspaper and surgical gloves, try not to rush the job it can get messy. Hope this help s Dr K.I.,A.