Abstract: An apparatus for processing a printing plate which comprises an aluminum base and a photoconductive layer on which a toner image is formed, comprises a rotary brush which is arranged so as to be kept in contact with a processing solution and out of contact with a printing plate. The processing solution supplied on the plate surface is regulated to form an even thick flow.

Abstract: A simple proofing apparatus which provides a proof by preparing a synthetic image from proofreading films of each color which are colored with cyan, yellow, magenta, black etc., corresponding to original plates for each color separation films, comprising a table for mounting a ground paper or a proofreading film thereon, a positioning pin adapted to engage with a punch hole formed through said proofreading film for positioning said ground paper or said proofreading film on said table, an absorbing groove provided on an upper surface of said table for fixedly adsorbing said ground paper or said proofreading film on said table, and a heating means adapted to heat said proofreading film mounted on said table and move on said table.

Abstract: Disclosed is an improved processor for printing plates or the like which essentially comprises a lower disposed developer receptacle containing a developer therein and upper disposed spray pipes and in which an arrangement is made such that a presensitized plate for printing or the like to be processed is initially passed through the developer receptacle and then subjected to treatment with the developer sprayed from the spray pipes.