Final answer:
True, loose toner on printouts is a sign that the fuser roller in a laser printer isn't reaching the required temperature, necessitating professional servicing.
Step-by-step explanation:
The statement that if loose toner comes out with your printout, the fuser is not reaching the proper temperature and professional service is required, is True. During the printing process in laser printers, the toner, which is a dry black powder, receives a negative charge and is attracted to the positively charged areas of the drum. The paper, with a higher positive charge than the drum, attracts the toner from the drum. The important final step is the fusing process, where the paper and the electrostatically held toner pass through heated pressure rollers. These rollers melt the toner, causing it to permanently adhere to the paper fibers. If the fuser does not reach the correct temperature, the toner will not melt properly, leading to loose toner on the printouts, indicating that the printer requires professional servicing.