Liquid-developing sheet
AssigneeToray Industries, Inc.
InventorsHirokazu NINOMIYA, Kiyohiko ITO
Life of this patent
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Abstract
This invention is a liquid-developing sheet comprising a liquid-accepting layer at least on one surface of a substrate, wherein said liquid-accepting layer contains a binder and a block copolymer comprising blocks of ethylene oxide units and blocks of alkylene oxide units with 3 or more carbon atoms. This invention can provide a liquid-developing sheet for a biosensor, which shows stable liquid developability even at high temperature and high humidity and is good in the adhesion between the liquid-accepting layer and the substrate. If the liquid-developing sheet of this invention is used, the accuracy of measurement by the biosensor can be enhanced.
Claims10
1-9. (canceled)
A biosensor comprising:
- a liquid-developing sheet comprising a substrate having a first surface that is exposed and a liquid-accepting layer at least on one surface of the substrate,
- wherein said liquid-accepting layer contains a binder and a block copolymer comprising blocks of ethylene oxide units and blocks of alkylene oxide units with three or more carbon atoms;
- an insulation board comprising electrodes disposed there-over;
- and
- a spacer containing a cavity, wherein the spacer is disposed between the liquid-developing sheet and the insulation board such that a liquid sample is introduced into the cavity through a capillary action between the insulation board and the liquid-accepting layer of the liquid-developing sheet, and wherein a surface of the liquid accepting layer has a wettability substantially higher than the first surface of the substrate.
Dependencies are inferred from the claim text.