TONER, METHOD FOR RECYCLING PAPER, AND TONER OBTAINED BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a toner for printing by recycling paper materials that have been utilized once for printing and putting the recycled paper to use as raw materials, while reducing use of petroleum resources and using paper as renewable resources, and to provide a process therefor. SOLUTION: The method for producing a toner includes: (1) saccharifying paper by at least one of a chemical degradation method and a biochemical degradation method to obtain a sugar-containing solution; (2) subjecting the sugar-containing solution obtained through (1) to lactic acid fermentation to obtain a lactic acid; (3) polymerizing the lactic acid obtained through (2) to obtain a polylactic acid; and (4) producing a toner using the polylactic acid obtained through (3). COPYRIGHT: (C)2011,JPO&INPIT