Patent ID: 7205028

Claim:
A method for producing a functional film which comprises at least one functional layer comprising a compressed layer of functional particles having a diameter of 10 μm or less on a support, said method comprising: applying a liquid in which the functional particles are dispersed onto a transfer support and drying the liquid to form a transfer precursor film having a layer containing the functional particles formed on the transfer support at a temperature of 10 to 150 ° C.; superposing the support on which the functional layer is to be formed and said transfer precursor film so that the support and said layer containing the functional particles are brought into contact with each other, and compressing said layer containing the functional particles to form the compressed layer of the functional particles on the support with a roll press machine at a compression force of at least 44 N/mm 2 ; and thereafter releasing the transfer support from said compressed layer of the functional particles, wherein the compressing and a transfer of the layer containing the functional particles from the transfer support to the support occur at the same time.