Abstract: A process of producing an optical compensation sheet is provided, which comprises applying a solution comprising a liquid crystalline compound and a photo-polymerization initiator on a transparent support, drying the solution at a drying temperature which satisfies the following formula (1) to align the liquid crystalline compound, and then fixing the liquid crystalline compound by light irradiation to form an optical anisotropic layer: T?0.0014×Ecoh?65??(1) wherein T represents drying temperature (° C.), Ecoh represents condensation energy (J/mol) of the photo-polymerization initiator, by which an optical compensation sheet of stable optical characteristics can be obtained by using an essentially needed amount of photo-polymerization initiator for the photo-polymerization reaction. By the process of the present invention, the staining of the production facility of the optical compensation sheet derived from vaporization of photo-polymerization initiator can be reduced.

Abstract: An optical compensation sheet having, on a transparent support, an optically anisotropic layer comprising a liquid crystalline compound fixed by using a photo-polymerization initiator system, wherein the photo-polymerization initiator system comprises at least one acylphosphine compound and at least one aromatic ketone compound selected from the group consisting of xanthene compounds, xanthone compounds, thioxanthone compounds and acridone compounds, which has less coloring and can be produced with less-power UV light, is provided.

Abstract: An optical compensation sheet having, on a transparent support, an optically anisotropic layer comprising a liquid crystalline compound fixed by using a photo-polymerization initiator system, wherein the photo-polymerization initiator system comprises at least one acylphosphine compound and at least one aromatic ketone compound selected from the group consisting of xanthene compounds, xanthone compounds, thioxanthone compounds and acridone compounds, which has less coloring and can be produced with less-power UV light, is provided.

Abstract: A process of producing an optical compensation sheet is provided, which comprises applying a solution comprising a liquid crystalline compound and a photo-polymerization initiator on a transparent support, drying the solution at a drying temperature which satisfies the following formula (1) to align the liquid crystalline compound, and then fixing the liquid crystalline compound by light irradiation to form an optical anisotropic layer: T?0.0014×Ecoh?65 ??(1) wherein T represents drying temperature(° C.), Ecoh represents condensation energy (J/mol) of the photo-polymerization initiator, by which an optical compensation sheet of stable optical characteristics can be obtained by using an essentially needed amount of photo-polymerization initiator for the photo-polymerization reaction. By the process of the present invention, the staining of the production facility of the optical compensation sheet derived from vaporization of photo-polymerization initiator can be reduced.

Abstract: An information matching system having managing equipment and managed equipment which are connected over a network, the managed equipment comprising a state monitor for creating a notice message with a sequence number informing the managing equipment of a change of the own state and a controller for resending a log of a necessary notice message to the managing equipment according to an instruction from the managing equipment, the managing equipment comprising a management information updating unit for checking whether the sequence number attached to the notice message delivered from the managed equipment is successive or not and a controller for giving a resending instruction of a log of a notice message having the missing sequence number to the managed equipment.