DUPLICATING PLASTICS INFORMATION CARRIERS
The invention relates to a method of reproducing plastics record carriers, in particular duplicating video records. According to the invention, a metal die is used which is provided with a thin-liquid molding resin of a particular composition which can be polymerized by radiation. A radiation-pervio...
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| creator | RINSE DIJKSTRA ADRIAAN JOHANNES GERARDUS OP HET VELD GERARDUS JOHANNES MEINARDUS LIPPITS JELIS DE JONGE ARNOLDUS JOHANNES MARIA VAN DEN BROEK |
| description | The invention relates to a method of reproducing plastics record carriers, in particular duplicating video records. According to the invention, a metal die is used which is provided with a thin-liquid molding resin of a particular composition which can be polymerized by radiation. A radiation-pervious substrate which is manufactured from synthetic material, for example polymethylmethacrylate, is provided on the molding resin. The molding resin is exposed to light via the substrate after which the cured molding resin together with the substrate connected thereto is removed from the die. The molding resin used in the process comprises low-molecular monomers or oligomers which contain on an average 25-70% by weight of hydrocarbon groups and/or phenyl groups. The molding resin is aprotic and has a functionality as regards unsaturatedness which is between the values 2 and 6. A suitable molding resin contains mono-, tri- or tetra esters of acrylic acid. The molding resin preferably has a swelling capacity with respect to the substrate and for that purpose preferably comprises a vinylmonomer. The metal die used in the method preferably is a quite flat die which is obtained by providing the master disk which is a flat glass plate with information track with a nickel layer, gluing hereon a flat stiffening plate and then removing the master disk. The resulting father disk may be used as a die. Alternatively, further metal copies may be made herefrom which are provided in a simpler manner with a flat stiffening plate. The invention also extends to the molding resin, substrate and die used in the method, as well as the resulting plastics record carriers. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_AU514257BB2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>AU514257BB2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_AU514257BB23</originalsourceid><addsrcrecordid>eNrjZNB0CQ3w8XR2DPH0c1cI8HEMDvF0Dlbw9HPzD_IFCvr7KTg7BgV5ugYF8zCwpiXmFKfyQmluBgU31xBnD93Ugvz41OKCxOTUvNSSeMdQU0MTI1NzJycjYyKUAAAKcCRq</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>DUPLICATING PLASTICS INFORMATION CARRIERS</title><source>esp@cenet</source><creator>RINSE DIJKSTRA ; ADRIAAN JOHANNES GERARDUS OP HET VELD ; GERARDUS JOHANNES MEINARDUS LIPPITS ; JELIS DE JONGE ; ARNOLDUS JOHANNES MARIA VAN DEN BROEK</creator><creatorcontrib>RINSE DIJKSTRA ; ADRIAAN JOHANNES GERARDUS OP HET VELD ; GERARDUS JOHANNES MEINARDUS LIPPITS ; JELIS DE JONGE ; ARNOLDUS JOHANNES MARIA VAN DEN BROEK</creatorcontrib><description>The invention relates to a method of reproducing plastics record carriers, in particular duplicating video records. According to the invention, a metal die is used which is provided with a thin-liquid molding resin of a particular composition which can be polymerized by radiation. A radiation-pervious substrate which is manufactured from synthetic material, for example polymethylmethacrylate, is provided on the molding resin. The molding resin is exposed to light via the substrate after which the cured molding resin together with the substrate connected thereto is removed from the die. The molding resin used in the process comprises low-molecular monomers or oligomers which contain on an average 25-70% by weight of hydrocarbon groups and/or phenyl groups. The molding resin is aprotic and has a functionality as regards unsaturatedness which is between the values 2 and 6. A suitable molding resin contains mono-, tri- or tetra esters of acrylic acid. The molding resin preferably has a swelling capacity with respect to the substrate and for that purpose preferably comprises a vinylmonomer. The metal die used in the method preferably is a quite flat die which is obtained by providing the master disk which is a flat glass plate with information track with a nickel layer, gluing hereon a flat stiffening plate and then removing the master disk. The resulting father disk may be used as a die. Alternatively, further metal copies may be made herefrom which are provided in a simpler manner with a flat stiffening plate. The invention also extends to the molding resin, substrate and die used in the method, as well as the resulting plastics record carriers.</description><language>eng</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; APPARATUS SPECIALLY ADAPTED THEREFOR ; APPARATUS THEREFOR ; CHEMISTRY ; CINEMATOGRAPHY ; ELECTROFORMING ; ELECTROGRAPHY ; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ; HOLOGRAPHY ; INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; MAKING GRANULES OR PREFORMS ; MATERIALS THEREFOR ; METALLURGY ; ORIGINALS THEREFOR ; PERFORMING OPERATIONS ; PHOTOGRAPHY ; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES ; PHYSICS ; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED ; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS ; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; TRANSPORTING ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>1981</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19810129&DB=EPODOC&CC=AU&NR=514257B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19810129&DB=EPODOC&CC=AU&NR=514257B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>RINSE DIJKSTRA</creatorcontrib><creatorcontrib>ADRIAAN JOHANNES GERARDUS OP HET VELD</creatorcontrib><creatorcontrib>GERARDUS JOHANNES MEINARDUS LIPPITS</creatorcontrib><creatorcontrib>JELIS DE JONGE</creatorcontrib><creatorcontrib>ARNOLDUS JOHANNES MARIA VAN DEN BROEK</creatorcontrib><title>DUPLICATING PLASTICS INFORMATION CARRIERS</title><description>The invention relates to a method of reproducing plastics record carriers, in particular duplicating video records. According to the invention, a metal die is used which is provided with a thin-liquid molding resin of a particular composition which can be polymerized by radiation. A radiation-pervious substrate which is manufactured from synthetic material, for example polymethylmethacrylate, is provided on the molding resin. The molding resin is exposed to light via the substrate after which the cured molding resin together with the substrate connected thereto is removed from the die. The molding resin used in the process comprises low-molecular monomers or oligomers which contain on an average 25-70% by weight of hydrocarbon groups and/or phenyl groups. The molding resin is aprotic and has a functionality as regards unsaturatedness which is between the values 2 and 6. A suitable molding resin contains mono-, tri- or tetra esters of acrylic acid. The molding resin preferably has a swelling capacity with respect to the substrate and for that purpose preferably comprises a vinylmonomer. The metal die used in the method preferably is a quite flat die which is obtained by providing the master disk which is a flat glass plate with information track with a nickel layer, gluing hereon a flat stiffening plate and then removing the master disk. The resulting father disk may be used as a die. Alternatively, further metal copies may be made herefrom which are provided in a simpler manner with a flat stiffening plate. The invention also extends to the molding resin, substrate and die used in the method, as well as the resulting plastics record carriers.</description><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</subject><subject>APPARATUS SPECIALLY ADAPTED THEREFOR</subject><subject>APPARATUS THEREFOR</subject><subject>CHEMISTRY</subject><subject>CINEMATOGRAPHY</subject><subject>ELECTROFORMING</subject><subject>ELECTROGRAPHY</subject><subject>ELECTROLYTIC OR ELECTROPHORETIC PROCESSES</subject><subject>HOLOGRAPHY</subject><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>MAKING GRANULES OR PREFORMS</subject><subject>MATERIALS THEREFOR</subject><subject>METALLURGY</subject><subject>ORIGINALS THEREFOR</subject><subject>PERFORMING OPERATIONS</subject><subject>PHOTOGRAPHY</subject><subject>PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES</subject><subject>PHYSICS</subject><subject>PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED</subject><subject>PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS</subject><subject>RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS</subject><subject>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</subject><subject>SHAPING OR JOINING OF PLASTICS</subject><subject>TRANSPORTING</subject><subject>WORKING OF PLASTICS</subject><subject>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1981</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNB0CQ3w8XR2DPH0c1cI8HEMDvF0Dlbw9HPzD_IFCvr7KTg7BgV5ugYF8zCwpiXmFKfyQmluBgU31xBnD93Ugvz41OKCxOTUvNSSeMdQU0MTI1NzJycjYyKUAAAKcCRq</recordid><startdate>19810129</startdate><enddate>19810129</enddate><creator>RINSE DIJKSTRA</creator><creator>ADRIAAN JOHANNES GERARDUS OP HET VELD</creator><creator>GERARDUS JOHANNES MEINARDUS LIPPITS</creator><creator>JELIS DE JONGE</creator><creator>ARNOLDUS JOHANNES MARIA VAN DEN BROEK</creator><scope>EVB</scope></search><sort><creationdate>19810129</creationdate><title>DUPLICATING PLASTICS INFORMATION CARRIERS</title><author>RINSE DIJKSTRA ; ADRIAAN JOHANNES GERARDUS OP HET VELD ; GERARDUS JOHANNES MEINARDUS LIPPITS ; JELIS DE JONGE ; ARNOLDUS JOHANNES MARIA VAN DEN BROEK</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_AU514257BB23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1981</creationdate><topic>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</topic><topic>APPARATUS SPECIALLY ADAPTED THEREFOR</topic><topic>APPARATUS THEREFOR</topic><topic>CHEMISTRY</topic><topic>CINEMATOGRAPHY</topic><topic>ELECTROFORMING</topic><topic>ELECTROGRAPHY</topic><topic>ELECTROLYTIC OR ELECTROPHORETIC PROCESSES</topic><topic>HOLOGRAPHY</topic><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>MAKING GRANULES OR PREFORMS</topic><topic>MATERIALS THEREFOR</topic><topic>METALLURGY</topic><topic>ORIGINALS THEREFOR</topic><topic>PERFORMING OPERATIONS</topic><topic>PHOTOGRAPHY</topic><topic>PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES</topic><topic>PHYSICS</topic><topic>PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED</topic><topic>PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS</topic><topic>RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS</topic><topic>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</topic><topic>SHAPING OR JOINING OF PLASTICS</topic><topic>TRANSPORTING</topic><topic>WORKING OF PLASTICS</topic><topic>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>RINSE DIJKSTRA</creatorcontrib><creatorcontrib>ADRIAAN JOHANNES GERARDUS OP HET VELD</creatorcontrib><creatorcontrib>GERARDUS JOHANNES MEINARDUS LIPPITS</creatorcontrib><creatorcontrib>JELIS DE JONGE</creatorcontrib><creatorcontrib>ARNOLDUS JOHANNES MARIA VAN DEN BROEK</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>RINSE DIJKSTRA</au><au>ADRIAAN JOHANNES GERARDUS OP HET VELD</au><au>GERARDUS JOHANNES MEINARDUS LIPPITS</au><au>JELIS DE JONGE</au><au>ARNOLDUS JOHANNES MARIA VAN DEN BROEK</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>DUPLICATING PLASTICS INFORMATION CARRIERS</title><date>1981-01-29</date><risdate>1981</risdate><abstract>The invention relates to a method of reproducing plastics record carriers, in particular duplicating video records. According to the invention, a metal die is used which is provided with a thin-liquid molding resin of a particular composition which can be polymerized by radiation. A radiation-pervious substrate which is manufactured from synthetic material, for example polymethylmethacrylate, is provided on the molding resin. The molding resin is exposed to light via the substrate after which the cured molding resin together with the substrate connected thereto is removed from the die. The molding resin used in the process comprises low-molecular monomers or oligomers which contain on an average 25-70% by weight of hydrocarbon groups and/or phenyl groups. The molding resin is aprotic and has a functionality as regards unsaturatedness which is between the values 2 and 6. A suitable molding resin contains mono-, tri- or tetra esters of acrylic acid. The molding resin preferably has a swelling capacity with respect to the substrate and for that purpose preferably comprises a vinylmonomer. The metal die used in the method preferably is a quite flat die which is obtained by providing the master disk which is a flat glass plate with information track with a nickel layer, gluing hereon a flat stiffening plate and then removing the master disk. The resulting father disk may be used as a die. Alternatively, further metal copies may be made herefrom which are provided in a simpler manner with a flat stiffening plate. The invention also extends to the molding resin, substrate and die used in the method, as well as the resulting plastics record carriers.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPARATUS SPECIALLY ADAPTED THEREFOR APPARATUS THEREFOR CHEMISTRY CINEMATOGRAPHY ELECTROFORMING ELECTROGRAPHY ELECTROLYTIC OR ELECTROPHORETIC PROCESSES HOLOGRAPHY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER MAKING GRANULES OR PREFORMS MATERIALS THEREFOR METALLURGY ORIGINALS THEREFOR PERFORMING OPERATIONS PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | DUPLICATING PLASTICS INFORMATION CARRIERS |
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