A transparent plastic film suited for offset printing or letterpress printing using an oxidation-polymerizable oil ink, which has at least on one side thereof an ink-fixing layer containing as major components a rubber resin and/or a styrene resin. This film enables lithographic offset printing, etc. to be conducted without spoiling film transparency. Further, since the surface of the film is minutely roughened or is subjected to antistatic treatment, sheet-fed printing of the film sheets can be free from blocking, tacking, flaw formation, and abrasion. A transparent plastic film having provided thereon an ink-fixing layer by applying a mixture of the above-described rubber resin and/or styrene resin solution and silica sol has more improved properties described above.