| 摘要 |
PURPOSE:To improve fixability by breaking the capsule walls of a microcapsule toner to powder in the stage of press fixing and to obtain a picture image which is high in density and maintains the density without decreasing against friction or the like, by dispersing fine inorg. powder in the form of matrix into the capsule walls of said toner. CONSTITUTION:A mixture of a resin for forming capsule walls and fine powder of silica, alumina, CaCO3 or the like having 1-10mu grain sizes at a rate of 1-90% of the resin is used in the stage of manufacturing a microcapsule toner. In the stage of press fixing, the capsules are broken easily to the fine powder, and the broken wall materials are so smaller in volume than the core material that said materials are taken into the core material for fixing; therefore, the picture image of high density is obtd. without spoiling the fixability and without the stripping of the toner when the fixed image is rubbed. |
