The Approval proofer, also known as the Approval Digital Imaging System or Kodak Approval System, was designed for use in Prepress proofing, especially for the highest quality contract proofs. The Approval is a laminate based system where up to 6 color donors can transfer images to a receiver sheet by a high-powered laser. Once imaging is complete the image can be transfer to a wide variety of substrates including papers, boards, shrink wrap, plastics, metals, etc.