Can you tell me the brand and model no. of the printer ?
How do you know that, the black ink is leaking ?
So, do you get any error message on the printer or a blank page is ejecting, when you try to print ?
Thanks for the update, the problem is caused due to printhead failure and as this is a hardware fault, I did not accepted the remote session request. Now, the last solution for this problem is replacing the printhead, but before that, you can remove the printhead from the printer, following the steps below and then, clean the gold contacts on it with a cotton swab and distilled water. After that check the result, if the problem persist then, unfortunately the printhead is defective and you have to replace the printhead.
Follow these steps to remove the cartridges and the printhead.
Load unused, plain white paper in the input tray.
Press the Power button to turn on the printer, if it is not already on.
Slip your fingers into the slot on the left side of the printer, and then pull forward to open the cartridge access door. The carriage moves to the left side of the printer. Wait until the carriage is idle and silent.
Lift the latch handle on the carriage.
This is a hardware fault and as this is a online paltform, I can only tell what you have to do solve the problem and in your case, I have told you that, you have to replace the printhea, how can I help further, as it is not possible for me to replace the printhead for you.