Provided is a continuously operating pressing machine for the manufacture of biodegradable plates made from plant parts. The method includes steps of introducing an amino-free gas into a chemical vapor deposition reactor; and decomposing the gas to form a layer of low k material. A memory cell material is disposed between pairs of each of the electrical contacts coupled to each of the RCM cells. A part of the cassette playing module is accommodated in the space on a side of the capstan other than the laser head side and immediately behind the CD in use for space-saving. Also, it is possible to increase the light emitting efficiency and life span of light emitting devices due to the low contactless resistance and the excellent electric current and voltage characteristic.