A medium for electrophoresis comprising an aqueous acrylamide gel formed by crosslinking polymerization of an acrylamide compound and an acrylamide copolymer having at least one specifically selected constitutional repeating unit in the presence of water. The medium may contain a water-soluble polymer and agarose. The medium may contain a modifier such as an anionic surfactant or a compound having at least one carbamoyl group.

A recording and readout information system having atomic scale densities comprises a recording medium having a carrier and means to form a pattern of atomic particles on the surface of the carrier. The atomic particles having an affinity for the carrier and can adhere to the surface to form a relatively adhesive and stable bond. The pattern of atomic particles produced on the carrier are representative of recorded information, e.g. binary represented information, of ultra high density based upon...

A recording medium comprising a non-porous substrate and a coating layer formed thereon, said coating layer comprising a carboxyl group-containing ionomer-type hydrophilic urethane resin and organic and/or inorganic fine particles.

A transfer recording medium comprises a support and a recording layer formed thereon comprising at least a colorant and a functional component sensitive to provision of light energy and heat energy. The recording layer is composed to have a specifically high sensitivity selective to provision of both light energy and heat energy defined as follows. The adhesion force f.sub.1 between the support and the recording layer and the adhesion force f.sub.2 between the recording layer and a transfer-rece...

A recording medium which enables formation of an image on any desired substrate is disclosed, which comprises a support having provided thereon at least a color developer capable of color-forming reaction with a dye precursor, and an adhesive such as heat-sensitive adhesives, tackifying composition, etc.

Provided is a printing medium particularly useful for inkjet printing. The printing medium is comprised of a substrate and a coating layer. The coating layer comprises porous particles, a resin binder and colloidal particles, with the colloidal particle being of a size that is greater than the size of the pores of the porous particles, but smaller than the interstitial pores created by the porous particles. The printing medium allows one to realize high optical density and high image resolution,...

A fluid-permeable assembly for uniformly contacting a fluid with a bulk material has two mirror-symmetrically interfitting mats each having a generally planar fluid-permeable carrier web, another fluid-permeable web defining an array of protrusions uniformly distributed over the respective planar web and each forming a respective pocket and respective masses of a fluid-permeable mobile bulk material filling the pockets of the mats. Each of the protrusions is flanked in a longitudinal direction o...

A recording medium which comprises a support having thereon a layer containing an electron-donating achromatic dye incorporated in microcapsules and an electron-accepting compound, wherein said electron-accepting compound is a 3-halo-4-hydroxybenzoic acid ester having a polymerizable ethylene group. The recording medium provides a high color density at image part, a low fog density at non-image part and markedly high stability of the non-image part.

The present invention relates to a recording medium comprising a plane substrate and a recording layer containing a polymer liquid crystal compound, wherein said recording layer containing a polymer liquid crystal compound has a groove.

A recording medium comprises a substrate, and an ink-receiving layer provided thereon wherein the ink receiving layer contains water-insoluble and amorphous basic aluminum salt. The recording medium according to claim 1, the basic aluminum salt is represented by the general formula (1) below: where x, y, and z are respectively positive integers and satisfy the relations of z=3x-y, and x/z.gtoreq.3, and X is an acid radical.