摘要:
An image forming element and an image forming method using the same are disclosed. The element comprises a support having thereon a image forming layer comprising a binder, an aromatic aldehyde, a cobalt (III) complex represented by formula I, and a compound represented by formula II or formula III;Co.sup.3 +(L)p(X)q (I)wherein L is a coordination compound capable of forming a complex compound with the cobalt cation and at least one of which is NH.sub.3 or a primary amine; X is a counter anion; p is an integer of 1 to 6; when p is 2 to 6, the plural Ls may be the same or different; and q is an integer of 1 to 3, ##STR1## wherein lig is a coordination compound capable of forming with the cobalt cation; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently an alkyl group, an aryl group, an aralkyl group, an alkenyl group, an alkinyl group, a cycloalkyl group, a heterocyclic group or a cyano group; n.sub.1 is an integer of 1 to 6, when n.sub.1 is 2 to 6, the plural ligs may be the same or different; and m is an integer of 1 to 3, ##STR2## wherein Dye is a cationic dye; R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are each independently an alkyl group, an aryl group, an aralkyl group, an alkenyl group, an alkinyl group, a heterocyclic group or a cyano group; n.sub.2 is an integer of 1 to 3, when n.sub.2 is 2 or 3, the plural counter ions may be the same or different.
摘要:
A thermal transfer recordimg material comprising a support having thereon a thermal transfer layer containing a dye represented by the following formula and a thermal transfer recording process capable of recording magenta images by forming a chelate dye in the presence of a metallic ion-containing compound ##STR1##
摘要:
A thermal transfer recording material comprises a support and provided thereon, a layer containing a binder and a metal ion providing compound represented by the following Formula ( I ):M.sup.2+ (X.sup.-).sub.2 Formula (I)wherein M.sup.2+ represents a divalent transition metal ion; and X represents a ligand capable of combining with the metal ion to form a complex, said ligand being represented by the following Formula (II): ##STR1##
摘要:
Disclosed is a metal chelate dye which is composed of a metal ion and a ligand that is a methine dye having 2 or more bonding positions capable of coordinate bond to the metal ion at the bonding position. A thermal transfer recording material, an ink used for an ink jet image recording process and a color toner for electrostatic image recording process are also disclosed.
摘要:
Disclosed is a white light-emitting organic electroluminescent device, which is excellent in stability of emission chromaticity over a long operation period, while having high electrical efficiency, long life, excellent storage stability and excellent color rendering properties. Also disclosed is an illuminating device using such an organic electroluminescent device. Specifically disclosed is an organic electroluminescent device having a light-emitting layer between an anode and a cathode, which is characterized by comprising a light-emitting layer A having a maximum emission wavelength of not more than 480 nm and containing a phosphorescent dopant having a maximum emission wavelength of not more than 480 nm, and a light-emitting layer B arranged between the light-emitting layer A and the anode, which has a maximum emission wavelength of not less than 510 nm and contains a phosphorescent dopant. This organic electroluminescent device is also characterized in that the concentration of the phosphorescent dopant contained in the light-emitting layer A varies in the thickness direction of the light-emitting layer A. Also specifically disclosed is an illuminating device using such a white light-emitting organic electroluminescent device.
摘要:
Provided is an organic electroluminescence element which is driven with a reduced drive voltage without deteriorating emission luminance and has a high power efficiency. The organic electroluminescence element having at least one light emitting layer is characterized in that two or more types of light emitting dopants having different emission colors are included in at least one light emitting layer, the concentration of all the light emitting dopants included in the light emitting layer is 5 Vol % or more, and the concentration of the light emitting dopant giving a main emission color among the light emitting dopants in the light emitting layer is 2 Vol % or less.
摘要:
This invention provides a multicolor phosphorescent organic electroluminescent element having an excellent electric power efficiency, a prolonged service life, an excellent storage stability, and an excellent stability of chromaticity against drive current, and a lighting system using the multicolor phosphorescent organic electroluminescent element. The multicolor phosphorescent organic electroluminescent element contains a plurality of phosphorescent dopants different from each other in luminescence wavelength and particularly exhibits white luminescence. Specifically, the multicolor phosphorescent organic electroluminescent element contains two or more phosphorescent dopants different from each other in luminescence wavelength and comprises two or more luminescent layers, the luminescent dopant being a phosphorescent dopant. The multicolor phosphorescent organic electroluminescent element is characterized in that at least one layer formed of luminescent layer A containing two or more phosphorescent dopants different from each other in luminescence wavelength in the same layer is provided, the content of the luminescent dopant having the highest concentration used in the luminescent layer A is not less than 4% by mass and not more than 20% by mass, and luminescent layer B having a maximum luminescence wavelength of not more than 480 nm is provided at a position near the cathode side as compared with the luminescent layer A.
摘要:
The present invention relates to a mixture of dyes to form a black image. In particular, the present invention relates to a mixture that gives a black image having favorable stability to light and sufficient high density, and a thermal transfer recording material employing the mixture of dyes.
摘要:
An image forming method containing the steps of (a) forming an image on a thermal transfer sheet of a thermal transfer recording material, and (b) transferring the image onto an image receiving sheet of the thermal transfer recording material, wherein the thermal transfer sheet including a substrate having thereon a yellow ink layer containing a thermally transferable yellow dye, a magenta ink layer containing a thermally transferable magenta dye, and a cyan ink layer containing a thermally transferable cyan dye, the image receiving sheet including a substrate having thereon a thermally transferable dye receiving layer; at least one of the thermally transferable dyes is reactive with a dye fixing agent, and satisfies Formula of (Aa/Am)×100≧75; and a printing rate of each of the yellow ink layer, the magenta ink layer and the cyan ink layer is not more than 2.5 msec./line.
摘要:
An image forming method containing the steps of (a) forming an image on a thermal transfer sheet of a thermal transfer recording material, and (b) transferring the image onto an image receiving sheet of the thermal transfer recording material, wherein the thermal transfer sheet including a substrate having thereon a yellow ink layer containing a thermally transferable yellow dye, a magenta ink layer containing a thermally transferable magenta dye, and a cyan ink layer containing a thermally transferable cyan dye, the image receiving sheet including a substrate having thereon a thermally transferable dye receiving layer; at least one of the thermally transferable dyes is reactive with a dye fixing agent, and satisfies Formula of (Aa/Am)×100≧75; and a printing rate of each of the yellow ink layer, the magenta ink layer and the cyan ink layer is not more than 2.5 msec./line.