To provide an image forming device and image forming method which shorten the image forming time from the same document image to each recording medium of different kinds, form a document image of an arbitrary number of copies, and select and store the recording mediums having formed images.

A presentation mode is set at step S1, a document and a OHP sheet are set at step S2, and a copy is started at step S3. The order of OHP copy processing is determined at step S4. When performing the OHP copy processing previously, the OHP copy processing is firstly performed by step S5. A process speed is changed into a speed for plain paper at step S6, and a copy to plain paper is performed at step S7. When making previously the copy to plain paper at step S4, the copy to plain paper is performed at step S8, and after making the process speed late at step S9, a copy to a OHP sheet is performed at step 10.