when the media cassette 2 containing the recording media 20 is completely attached to the image forming apparatus body 1 then a static electricity generated in a printing operation and charged on a recording medium existing at top of the pile of recording media 20 is discharged through the media supplying roller 9 included in the second ground conducting route therefore every static electricity charged on the media cassette 2 is completely removed and obtained is an effect of eliminating inconveniences such as drop of graphical quality malfunction of the apparatus or electric shocks to operators which are caused by a static electricity flowing in unexpected routes as a noise of electric current in the description mentioned above a first ground conducting route comprises the recording media 20 the loading plate 3 the conducting member 4 and the pushing out member 10 leading to a grounding point 100 however the present invention is not limited to this example that is a static electricity to be discharged is not limited to a static electricity charged on the recording media 20 or on the loading plate 3 but a static electricity charged on every element in the media cassette 2 is a subject of the present invention therefore a first ground conducting route can comprise all the conducting route that that is grounded through the pushing out member 10 when the media cassette 2 is on a way to a position where the media cassette 2 is attached to the image forming apparatus body 1 for example a first ground conducting route can comprise the pushing up member 5 or the plate holding portion 6 and the loading plate 3 the conducting member 4 and the pushing out member 10 leading to a.