For Digital Print Production PDF proofs will be submitted for your approval prior to printing. Hard copy proofs are also available if required. For Litho Print Production Before your job is printed we prepare proofs. These will be checked by the printers, the finishing department, your account team, you – and perhaps your clients – and the Acorn Press reader. Proofing is an expensive process, but a hugely valuable one. If you are unsure how to inspect a proof, click here There are three methods we commonly use for proofing your work: PDF proofs   Adobe Acrobat PDF files provide a great way to ensure that fonts and pictures have transferred accurately between your system and ours, or that multiple components from different files have been correctly combined. Because they can be returned to you by email they are very useful for fast turnaround commercial work driven by the need for speed and economy. Various resolutions of PDF can be produced subject to the method of file transfer e.g. high or low resolution or web. Digital ink jets   These are colour inkjet prints of your work as it will be printed, and are perfect for all four colour work, but less useful for work produced in special colours or metallic inks. Colour accuracy is very good, but these proofs cannot be produced on the paper you are printing on. Changes and corrections can be made economically to files even after they have been proofed this way and reproofed if required. Machine proofs (commonly known as wet proofs)   These are proofs produced on a printing press from the plates that will be used to print the final job. They can be printed on the actual paper specified for your job on both sides of the sheet if required. This is the best way to proof work that uses special colours or metallic inks, where the quality of reproduction is a key driver, or if you require multiple copies of the proofs, but adds both time and cost to the process. Changes are usually relatively expensive, as new plates will be required.