Protection membrane forming film, protection membrane forming utilization sheet, production method and inspection method for workpiece or processed product, workpiece determined as adequate product, and processed product determined as adequate product

Provided are: a protection membrane forming film (1), which is a filler-containing protection membrane forming film (1), wherein the average particle size of the filler is 0.4 μm or smaller; a protection membrane forming utilization sheet (2); a production method and an inspection method for a workpiece or a processed product which uses the film and the sheet; and furthermore, a workpiece and a processed product determined as adequate products by said inspection method. These protection membrane forming film and protection membrane forming utilization sheet enable formation of a protective film having excellent print legibility when laser printed.