of the thickness needs to be less than 25 u03bcm to have better voc recycle efficiency the thickness depends on the distance between the scraper and the roller thus a micro adjustment mechanism is designed to adjust the height 121 shown in fig1 of the scraper besides the lower edge of the scraper has to be parallel to the surface of the roller if not the film becomes uneven the quality and efficiency will be affected by the above implementation the thickness of the fluid material is thereby controlled fig1 is a schematic diagram illustrating a scraper micro adjustment mechanism according to the second embodiment of the present invention as shown in fig1 a scraper 120 is mounted on two linear slide rails 122 parallel to each other at first the scraper 120 is fastened on a slide unit 123 of the linear slide rails 122 and thereby the height 121 of the scraper 120 shown in fig1 can be adjusted the scraper 120 is also designed to be an elastic rubber scraper to prevent the substrate from being scratched and also designed to be exchangeable for the conveniences in cleaning and replacing fig1 is a schematic diagram illustrating a film formation baking apparatus according to the second embodiment of the present invention the film formation baking apparatus is provided to speed up.