A mirror device which can be simultaneously used for display purposes, based on e. The image reader provided substantially at an upper portion of the image forming apparatus reads an image of a document. The disclosed system further enables web page owners to control access to information provided through the web page on a group or individual visitor basis. Doped portions of the second conductivity type are adjacent to a lower portion of a sidewall of the trenches. Methods of synthesizing the cardanol based dimers, the epoxy curing agents and the epoxies are also provided.