Final answer:
Dwight Schrute pranks Andy in 'The Office' by convincing him of a corporate conspiracy involving smoking printers.
Step-by-step explanation:
The pranker who convinces Andy in S6E22 "The Cover-Up" that there is a corporate conspiracy involving Sabre's smoking printers is Dwight Schrute. Dwight uses his pranking skills to create an elaborate ruse, including fake smoke and documents, to make Andy believe in the conspiracy. This prank is part of the popular TV show 'The Office.'