The Material Basis of the Forming Time of Documents
Yang Qun-ying · Journal of Swupl · 2003
Pigment and dye are most important in examination of documents. All kinds of new type of pigment and dye have been continually produced and widely used in printer, ball pen, etc. Through the physical and chemical technique study the characteristic of pigment and dye in wrinting ink, we can get variable data and paramenters about the documents. Now, we partly discuss pigment and dye in wrinting ink in order to profit the research of examination of documents.