On Thu, 12 May 2016 01:16:49 -0500, Ant wrote:

Hello.

Are HP LaserJet 6P's C3903A toners supposed to leak black ink when
moving them around? This happened when taking the old one out to replace
with the new one (HP's brand) with their removed tape covers. The leaks
happened outside of the old printer.

Thank you in advance.

Some HP cartridges contain a 'waste toner' bin. That can leak if it's a
bit full on removal.