Final answer:
The transfer corona wire is responsible for putting a positive charge on the paper in a laser printer to pull the toner onto the paper.
Step-by-step explanation:
The part of a laser printer that puts a positive charge on the paper in order to pull the toner from the drum onto the paper is called the transfer corona wire. In a laser printer, the part that is responsible for giving the paper a positive charge to attract the negatively charged toner from the drum is known as the transfer corona or sometimes as a primary charge roller (PCR). The transfer corona is a wire or roller that applies a greater positive charge to the paper than the charge on the photoconductive drum. When the blank piece of paper passes by the transfer corona, it gets positively charged and then pulls the negatively charged toner particles from the drum onto the paper. Following this, the paper with the toner moves through heated pressure rollers that melt and fuse the toner onto the paper fibers, resulting in a permanent print.