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AssigneeA Son Enterprise Inc
InventorsTakashi Iwasaki, Takuya Yashuhara, Kenji Nonaka, Sadatoshi Igaue
Estimating the term…
Disclosed herein is a front face erasable microcapsule magnetophoretic display sheet having a support and a solid dispersion layer provided on one surface of the support and composed of microcapsules having an average particle diameter of 50 to 650 μm, in which a liquid dispersion, a white pigment, additives and magnetic particles are encapsulated, and a binder. The magnetic particles include at least two kinds of magnetic particles different in particle diameter from each other. An erasing magnet for front face erasing and a writing magnet for front face erasable microcapsule magnetophoretic display sheet are also disclosed.
A front face erasable microcapsule magnetophoretic display sheet comprising a support and a solid dispersion layer provided on one surface of the support and composed of microcapsules having an average particle diameter of 50 to 650 μm, in which a liquid dispersion, a white pigment, additives and magnetic particles are encapsulated, and a binder, wherein the magnetic particles include at least two kinds of magnetic particles different in particle diameter from each other.
The front face erasable microcapsule magnetophoretic display sheet according claim, wherein the proportion of the magnetic particles is the sum total of 100% by weight of said at least one kind of magnetic particles having a particle diameter ranging from 0.1 μm to 1.0 μm and 10 to 200% by weight of said at least one kind of magnetic particles having a particle diameter greater than the above particles ranging from greater than 1.0 μm to 20 μm.
An erasing magnet for front face erasing, which is adapted to slide it over at least a part of the front face of a front face erasable microcapsule magnetophoretic display sheet, wherein the magnet is arranged and used in such a manner that a clearance is made between the front face erasable microcapsule magnetophoretic display sheet and the magnet, whereby a magnetic field different from the case where the magnet is brought into direct contact with the sheet acts on microcapsules in the sheet.
A writing magnet for front face erasable microcapsule magnetophoretic display sheets, wherein a magnet is covered with a metal to control a magnetic field.
Dependencies are inferred from the claim text.