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7202006 |
Protective layer for reimageable medium
A reimageable recording medium includes a substrate, a display layer, and a protective layer. The protective layer comprises a microencapsulated diarylethene material that is capable of switching...
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7083904 |
Compositions, systems, and methods for imaging
A composition, method, and system for recording an image. The system includes an imaging material in which radiation energy is absorbed by an antenna material. The antenna material may be chosen...
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6607871 |
Image recording medium
An image recording medium comprising a light and heat change material capable of recording an image with laser beam is described, characterized in that therein are incorporated a heat generator...
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6562542 |
Image-forming material and novel sulfonic acid ester derivative
An image-forming material is described, comprising on an support an acid-generating agent selected from a sulfonic acid ester of a specific structure generating an acid by the action of heat and...
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6433035 |
Selectively colorable polymerizable compositions
Selectively colorable compositions and a method for forming selectively colored polymeric bodies using such compositions are disclosed. In accordance with the invention, a selectively colorable...
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6274728 |
Soluble chromophores having improved solubilizing groups
Compounds of formula A(B) x (I), wherein x is an integer from 1 to 8, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, indanthrone,...
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6110646 |
Positive photosensitive composition, photosensitive lithographic printing plate and method for forming a positive image
A positive photosensitive composition comprising an alkali-soluble organic high molecular substance having phenolic hydroxyl groups and an acid color forming dye.
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5955237 |
Photosensitive recording medium exposed by three exposure wavelengths longer than 500 nm
A photosensitive recording medium comprising a base material and formed thereon a photosensitive layer containing at least yellow color-forming particles containing a first photosensitive component...
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5955224 |
Thermally imageable monochrome digital proofing product with improved near IR-absorbing dye(s)
Novel thermally imageable monochrome product compositions, elements, and processes are disclosed herein. These compositions and elements characteristically have high contrast and fast imaging...
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5858583 |
Thermally imageable monochrome digital proofing product with high contrast and fast photospeed
Novel thermally imageable monochrome product compositions, elements, and processes are disclosed herein. These compositions and elements characteristically have high contrast and fast imaging...
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5510224 |
Photosensitive microcapsule for photoimaging and thermal development recording media
A photosensitive microcapsule which contains a polymerizable monomer and a polymerization initiator has increased sensitivity due to the displacement of soluble water in the monomer photosensitive...
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5476755 |
Image forming element and image forming method
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...
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5432049 |
Photochromic composition
Compounds of the formula I ##STR1## in which X is O, S, SO, SO 2 or NR 13 , R 13 is, for example, methyl, and R 1 to R 12 , independently of one another, are, for example, H, C 1 -C 12 alkyl,...
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5432048 |
Rewritable photochromic optical disc
A rewritable photochromic optical disc which comprises a photochromic recording layer made of a diaryl ethene derivative capable of assuming first to third states, the first state with a first...
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5332654 |
Reversible redox-controlled imaging method
A novel class of N-substituted triarylmethane sulfonamides is provided which undergo reversible oxidation into colored form and reversible reduction of the oxidized form into colorless form....
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5322750 |
Optical recording medium
An optical recording medium and a method of writing, reading and erasing information in an optical recording medium are provided in which the optical recording medium comprises a carrier and a...
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5320936 |
Photo responsive material employing a thiophene derivative having long conjugated chain at 3-position
Thiophene derivatives represented by the general formula (I): ##STR1## where R is an aldehyde, carboxyl, C 1 -5 -alkyl ester or C 1 -5 -alkyl acetal group and n is 3 to 5, are prepared. These...
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5223358 |
Fluororesin-coated material having markings indicated thereon
A fluororesin-coated material having markings indicated thereon is disclosed, which material comprises (1) a substrate having coated thereon a fluororesin composition comprising a high-molecular...
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5198323 |
Resist composition containing alkali-soluble resin, 1,2-quinone diazide compound and anti-halation component
A resist composition comprising an alkali-soluble resin, a 1,2-quinone diazide compound and a compound of the general formula (I): ##STR1## wherein Z is an oxygen or sulfur atom or a group of the...
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5196297 |
Recording material and process of using
This invention relates to novel recording materials which employ color-forming di- and triarylmethane compounds possessing certain S-containing ring-closing moieties, namely, or thiolactone,...
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5192644 |
Optical memory device
An improved optical memory device comprising a substrate and a plurality of optical memory layers made of a photochromic material and formed over the substrate, the plurality of optical memory...
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5183726 |
Light-sensitive recording medium and process for producing same
A light-sensitive recording medium using a photochromic material produced at a low cost, without necessity of fixing free rotation of bonds in its cis compound and removing its trans compound, is...
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5077178 |
Full color photothermographic imaging system
Disclosed are photothermographic constructions containing at least a plurality of light-sensitive layers which are separated by barrier layers composed of a polymer, e.g., ethyl cellulose and...
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4997745 |
Photosensitive composition and photopolymerizable composition employing the same
A photosensitive composition comprising a trihalomethyl-s-triazine compound and a photosensitizer, wherein the photosensitizer being a dye having a reduction potential not more than 0.10 volt...
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4737449 |
Photochromic 3-pyrryl fulgides and fulgimides
A series of novel 3-pyrryl fulgides and fulgimides are disclosed which are photochromic. The photochromic compounds are coloured by subjecting them to irradiation in the near ultraviolet and will...
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4659649 |
Photosensitive systems showing visible indication of exposure
The invention provides new compositions which change color on exposure to actinic radiation and contain a photosensitive onium, e.g. iodonium or sulphonium, salt and a dyestuff which changes color...
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4598036 |
Print-out compositions
A print-out composition containing a leuco dye and a photooxidizing agent is described, said print-out composition containing at least one carbazomethane compound represented by formula (I) as the...
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4552830 |
Carbonylic halides as activators for phototropic compositions
Compositions containing a polymerizable, curable or crosslinkable component, a photoinitiator, a colorformer capable of changing color upon contact with a suitable activator and a latent activator...
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4457999 |
Light-sensitive 1,2 quinone diazide containing mixture and light-sensitive copying material prepared therefrom wherein imaged produced therein is visible under yellow safety light
Disclosed is a light-sensitive mixture comprising (a) a 1,2-quinonediazide or a mixture of (a 1 ) a compound forming an acid on exposure and (a 2 ) a compound having at least one C--O--C bond...
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4425424 |
Dye-forming compositions
There is disclosed a radiation-sensitive composition comprising a leuco dye and a sulfonyloxy-N photooxidant that converts the leuco dye to a dye having a color different from that of its leuco...
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4379835 |
Black image from a thermographic imaging system
A thermographic imaging system comprising a single layer and capable of providing a stable dark to black image upon localized heating is disclosed. The single layer comprises a polymeric binder, a...
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4308341 |
Non-silver imaging compositions having improved speeds and processing temperatures
There are disclosed an imaging composition, element and method featuring an aromatic dialdehyde that reacts with an exposure-generated amine to form a dye. The photographic speed of the reaction is...
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4284704 |
Photographic elements with incorporated hydrogen source photoreductant and tetrazolium salt
Imaging means, such as a tetrazolium salt, capable of reduction to form a visible image is present in a radiation-sensitive layer in combination with a photoreductant incorporating one or more...
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4247618 |
Photoimaging systems with cyclic hydrazides
A photosensitive system comprising in intimate admixture (1) a dye in its leuco form, (2) a photooxidant taken from the group of hexaarylbiimidazole compounds, benzophenone, para-aminophenyl...
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4094676 |
Non-silver salt type photosensitive composition
A novel non-silver salt type photosensitive composition which comprises (A) N,N'-diphenyl-p-phenylenediamine as a color developing agent and tetramethylthiuram disulfide which unexpectedly...
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4090877 |
Photosensitive imageable composition containing a hexaaromaticbimidazole, a leuco dye and an oxygen-sensitizing compound
An imageable composition comprising (a) a leuco form of dye, (b) a hexaaromaticbiimidazole that effects the conversion of said dye to a differently colored compound when exposed to electromagnetic...
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4075019 |
High gain cobalt(III)complex composition and element
An image-forming element is disclosed comprised of a support and a coating thereon containing a cobalt(III)complex and a compound containing a conjugated π bonding system capable of forming at...
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3980480 |
Photographic recording and reproduction of information photochromic composition containing polyhalogenated hydrocarbon, spiropyran compound and heterocyclic mercapto compound and the use thereof
A photographic process wherein a visible image is formed by print-out or optical development in a recording material comprising in intimate admixture a spiropyran compound, an ultra-violet...
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3923521 |
Ultraviolet holdback of nonsilver photosensitive systems by incorporating therein certain organic additives
Ultraviolet holdback of non-silver photosensitive compositions such as those described in U.S. Pat. Nos. 3,042,517 to 3,042,519 and similar non-silver free-radical compositions, is improved by the...
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3887374 |
Tetrazolium alt photoreductive imaging
A tetrazolium salt capable of reduction to a formazan dye is present in a radiation-sensitive layer in combination with a photoreductant capable of producing, in the presence of labile hydrogen...
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3887372 |
Photographic elements and processes for producing formazan dye images of enhanced stability
An electronegatively substituted tetrazolium salt capable of reduction to a formazan dye of enhanced stability is present in a radiation-sensitive layer in combination with a photoreductant capable...
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3880659 |
Triazolium salt photoreductive imaging
A triazolium salt capable of reduction to an azo-amine dye is present in a radiation-sensitive layer in combination with a photoreductant capable of producing, in the presence of labile hydrogen...
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3652275 |
HEXAARYLBIIMIDAZOLE BIS (p-DIALKYL-AMINOPHENYL-α,β-UNSATURATED) KETONE COMPOSITIONS
Compositions comprising a hexaarylbiimidazole and a selected bis(p-aminophenyl-...α ,β-unsaturated) ketone and optionally, a leuco dye, a polymerizable monomer or inert components such as...
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3649284 |
FURFURVYLIDENE-LOWER HALOALKANE PHOTOSENSITIVE COMPOSITION CONTAINING ARYLAMINO DISULFIDE
A heat-developable photographic plate comprising, on a support, a layer of a light-transmitting binder containing a furfurylidene compound, a photosensitive lower haloalkane, a brominated primary...
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3527640 |
LIGHT-SENSITIVE REPRODUCTION MATERIAL COMPRISING LEUCO DYESTUFFS AND LIGHT-SENSITIVE 2,4-DINITROBENZENE-SULPHENYL ESTERS
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3510309 |
PHENOLIC STABILIZER IN NON-SILVER PHOTOSENSITIVE COMPOSITION
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3503745 |
DYE SENSITIZATION OF LIGHT SENSITIVE SYSTEMS
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3386829 |
Photoreproduction process utilizing photosensitive thianthrene compositions
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3342604 |
Non-silver photosensitive printout compositions
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3300314 |
Nonsilver, light-sensitive photographic elements
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