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5419999 Optical recording medium and recording/reproducing method therefor  
An optical recording medium and a recording method therefor in which a recording layer group and a light-absorbing and heat-generating layer for absorbing radiated light to convert the absorbed...
5420845 Methods of varying optical properties, optical devices, information recording media and information recording methods and apparatuses  
High density optical information recording even at room temperature is achieved by control of the diameter of crystalline portions exhibiting quantum size effects of fine semiconductor particles...
5419937 Optical record carrier  
An optical record carrier with a substrate (1) having thereon a stack (3) of a reflection layer (4), an interference layer (5) and a phase-change recording-layer (6) in that order, the incident...
5419939 Optical recording disk  
An optical recording disk includes a dye base recording layer, an intermediate layer, and a reflective layer on a substrate in the described order. The reflective layer is composed of one or more...
5418029 Information recording medium and method  
An information recording medium comprises a semiconductor layer and a layer of a ferroelectric substance overlaid on the semiconductor layer, information being recorded by means of directions of...
5409756 Optical disc with corrosion-resistant metallic reflective layer  
An optical disc for use as a compact disc, an optical video disc, or the like has a disc substrate of a light-transmissive material such as polycarbonate, PMMA, or the like. The disc substrate has...
5407720 Optical recording medium and process for producing the same  
An optical recording medium has tracking tracks and recording tracks interposed between the tracking tracks. The width of the recording tracks in a specific region is larger than that in other region.
5403702 Crystals consisting of an indolinospirobenzopyran derivative  
The object of the invention is to provide a novel compound suited for use as a thermochromic and photochromic material. The invention relates to an indolinospirobenzopyran derivative of the general...
5401609 Optical recording medium and its production  
An optical recording medium includes on the surface of a substrate a recording thin film, a thin film of dielectric material and a reflecting thin film in this order, characterized in that said...
5401549 Optical information recording medium  
An optical information recording medium includes a ROM region in which information has been recorded in the form of pits in a substrate, and from which the recorded information can be reproduced...
5399220 Composite disc media and method for making same  
A composite disc in which a pattern of spaced glue dots is sandwiched between two disc halves. One of the disc halves is a dummy disc, and the other is a recordable optical disc. The pair of disc...
5400147 Method and apparatus for halftone reproduction of continuous tone radiographic images  
A multilevel halftone reproduction transparency medium and a method and system for reproducing images thereon. The transparency medium includes a substantially transparent carrier having first and...
5398051 Transfer member thermal transfer recording method using an intermediate  
A thermal transfer recording method for recording, in which an intermediate transfer member having a recording layer formed on a polymeric layer is used in such a way that the intermediate transfer...
5395669 Optical record medium  
In a record medium wherein information is recorded and/or erased by changing the optical state thermally by the irradiation with a laser beam or the like, a protection layer made from a material...
5391462 Otical record disk  
In an optical recording disk comprising a substrate, a dye base recording layer, and a reflective layer, the recording layer contains a metal complex having a center metal, and the reflective layer...
5391414 Diskettes having crosslinked adhesive bond to hub  
A magnetic recording disk that includes an annular recording medium disk bonded to a hub with a pressure sensitive adhesive. The pressure sensitive adhesive bonds the disk to a flange portion of...
5382497 Optical recording medium and process for recording thereupon  
An optical recording medium comprising a substrate and a thin organic film containing at least one kind of dye selected from polymethine family dyes, perylium family dyes, and cyanine family dyes,...
5382460 Optical recording disk and production process therefor  
An optical recording disk includes a light transmissive substrate, a recording film disposed on the substrate directly or through an intermediate layer and a protection film disposed on the...
5379058 Recording apparatus using a thermosensitive recording medium  
A recording apparatus for recording data in a thermosensitive recording medium. The recording medium has a reversible thermosensitive recording material capable of selectively assuming one of two...
5378516 Thin type optical memory medium and method for preparing the same  
An optical memory medium comprises a heat-resistant sheet a plastic resin layer having an uneven guide groove on the heat-resistant sheet, and an optical recording layer on the plastic resin layer....
5378517 Optical disc having signal recording layer on each side and method for producing same  
A double-side optical disc formed by a pair of optical disc halves bonded together, and a process for producing the double-side optical disc. An adhesive is applied to the disc halves, which are...
5376422 Optical recording medium and apparatus for playing such a medium  
An optical recording medium in which tracks are constructed by a plurality of combination tracks and the distance between tracks is narrowed so that data is recorded at a high density, and a...
5370970 Write-once-read-many optical disk  
A WORM optical disk that not only has a sufficiently improved reflectance to permit the setting of higher RF signal levels but that also permits the setting of higher levels for the tracking error...
5371522 Apparatus for erasing and recording data in a thermosensitive recording medium  
An apparatus for recording data in a thermosensitive recording medium at a first temperature after erasing data written in the medium at a second temperature. The apparatus desirably erases data...
5368908 Optical information recording medium  
An optical information recording medium, for writing in and reading out information by a laser beam, is composed of a recording layer, an anti-reflection layer structure formed on an outer surface...
5369421 Method of printing colored image and apparatus suitable therefor  
A recording method in which a liquid adhesion region and a liquid non-adhesion region of a surface of a material are utilized in a recording process. A latent image is formed by applying a heat...
5369419 Method and apparatus for marking a receiver media with specularly differentiated indicia  
In a thermal imaging printer system, a method and apparatus of marking the specularly reflective receiver media with indicia differing in specularity from the surface specularity of the media. In...
5362536 Recordable optical element having a leuco dye  
There is disclosed a recordable optical element that includes a dye. The element has a substrate and on the surface of the substrate, a dye containing recording layer and a light reflecting layer....
5360652 Optical recording disc  
The present invention relates to an optical recording disc comprising two disc bases each having a recording layer formed on one surface side of a substrate bonded to each other by the medium of an...
5360651 Optical disk having R/W and worm area  
An optical storage arrangement is provided where a unified optical disk, or other optical media, has separate Read/Write (R/W) and Write Once Read Many (WORM) areas. A Read/Write head or transducer...
5358759 Optical recording element  
Data is written into thin overcoated optical recording media in such a way that pit formation is accompanied by breaching of the overcoat at least temporarily so as to release gases/vapors produced...
5356684 Optical recording medium and method of manufacturing thereof  
The object of the present invention is to provide a an optical recording medium provided with a reflective film having a high reflectivity and durability and a means for producing thereof, and it...
5352503 Recording paper for ink jet recording processes  
The present invention provides one with a recording paper useful in ink jet recording processes. The recording paper is comprised of a substrate and a coating, with the coating comprising a pigment...
5348811 Recording medium and method of performing recording/producing on the recording medium  
A recording medium and method of performing recording/reproducing on the recording medium. The recording medium includes a multi-layer structure wherein at least two kinds of atomic layers are...
5347301 Transfer-type electrothermographic recording method and recording medium for use with the same  
A transfer-type electrothermographic recording method comprising the steps of uniformly charging an electrothermographic recording layer which exhibits chargeability A at room temperature and...
5344682 Optical recording medium  
An optical recording medium of a single plate type comprises a substrate having a groove, a recording layer containing a dye overlying the substrate, a reflective layer overlying the recording...
5344683 Optical information recording medium with phase grooves in land portions of information recording areas  
An optical information recording medium for a land recording method in which information recording pits are formed in a recording layer provided in a land portion between adjacent guide grooves...
5342669 Optical information recording medium  
Optical information recording medium that has resistance to scratching, resistance to friction static electricity, rapid discharging, resistance to dust adhesion on surface, thus having high...
5340631 Clathrate inclusion compounds and optical recording medium using the same  
A clathrate inclusion compound consisting essentially of a cyanine dye and organic host molecules including the cyanine dye therein is described. By the inclusion, the degradation of the cyanine...
5340698 Optical disk  
An optical disk is configured as comprising a pair of substrates one of which has a recording layer borne thereon, the substrates being joined together through an adhesive so that the recording...
5338646 Optical memory device having an improved light reflection or optical memory layer  
An optical memory device comprising at least one transparent substrate and a light reflection layer or an optical memory layer laminated on one surface of the substrate, in which the light...
5335001 Process and apparatus for forming dot image capable of controlling dot size  
A process for forming a dot image on a recording medium which has a surface having a characteristic in which a receding contact angle decreases when the recording medium is heated in a condition...
5328816 Process for producing optical recording medium  
A process for producing an information recording medium comprising a substrate and provided thereon a recording layer and protective layer comprises the steps of forming on one substrate sheet a...
5326617 Curl prevention using a transverse slit on tray-loaded film for printers  
In order to avoid misfeeds from tray-loaded film, a lateral slit is provided through a backing sheet of composite media in a middle portion of a leader region where the film is adhered on both...
5326679 Recording medium  
A writable recording medium having reduced jitter, improved performance on repeated reproduction, improved light resistance, and sensitivity controllability is disclosed, in which a light-absorbing...
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...
5318882 Optical recording medium containing a light stabilizer comprised of aryl nitrogen compound  
Certain types of aryl nitrogen compounds are found to be useful not only for effectively rendering dyes lightfast but also for using as an additive that has high solubility in solvents and...
5316813 Optical recording medium  
In an optical recording medium, 4,8-diamino-2-(4-hexyloxyphenyl)-1,5-dihydroxyanthraquinone is used as guest molecules, for an optical recording layer, and a compound expressed by a general formula...
5316900 Optical recording medium having a constant birefringent property and an alterable photochromic property  
A recording medium comprises a recording layer, a birefringent layer, and a reflecting layer. The recording layer is formed of a material whose optical rotatory power is alterable such that in one...
5316814 Optical information recording medium  
An optical information recording medium including a ROM area and a recordable area is composed of a light-transmitting substrate with prepits and/or guide grooves formed on the surface thereof, a...