| 摘要 |
Photosetting ferrofluid compositions of this type comprises three manners of structural feature. A first type of the compositions to solve the problems mentioned above is a photosetting type ferrofluid which is prepared by admixing photosetting resin with ferrofluid in which ferromagnetic particles having adsorbed a surfactant(s) are dispersed into a carrier. An improved photosetting type ferrofluid is also proposed as a second type of composition, in which the carrier itself is composed of at least a photosetting resin. A further improved photosetting type ferrofluid having higher sensitivity than that of the second embodiment is also prepared as a type of composition, with an intention to obtain higher sharp microphotograph image, and this sensitive photosetting type ferrofluid is prepared by admixing a ferrofluid, consisting of a carrier of low viscosity, ferromagnetic particles, a surfactant or surfactants for dispersing the ferromagnetic particles in said carrier and further added with photosetting resin at least 25% by volume of the carrier.
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