NO136269B - - Google Patents
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- Publication number
- NO136269B NO136269B NO2887/73A NO288773A NO136269B NO 136269 B NO136269 B NO 136269B NO 2887/73 A NO2887/73 A NO 2887/73A NO 288773 A NO288773 A NO 288773A NO 136269 B NO136269 B NO 136269B
- Authority
- NO
- Norway
- Prior art keywords
- film
- printing plate
- forming
- areas
- aqueous solution
- Prior art date
Links
- 238000007639 printing Methods 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 229920002125 Sokalan® Polymers 0.000 claims description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 4
- 239000004584 polyacrylic acid Substances 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 239000000783 alginic acid Substances 0.000 claims description 3
- 235000010443 alginic acid Nutrition 0.000 claims description 3
- 229920000615 alginic acid Polymers 0.000 claims description 3
- 229960001126 alginic acid Drugs 0.000 claims description 3
- 150000004781 alginic acids Chemical class 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- 239000000049 pigment Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 239000012777 electrically insulating material Substances 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims 2
- 150000001340 alkali metals Chemical class 0.000 claims 2
- 239000002585 base Substances 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 239000010408 film Substances 0.000 description 51
- 238000007645 offset printing Methods 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000002985 plastic film Substances 0.000 description 6
- 229920006255 plastic film Polymers 0.000 description 6
- -1 potassium ferricyanide Chemical compound 0.000 description 6
- 239000002966 varnish Substances 0.000 description 6
- 230000002209 hydrophobic effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000011343 solid material Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004571 lime Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000000276 potassium ferrocyanide Substances 0.000 description 3
- XOGGUFAVLNCTRS-UHFFFAOYSA-N tetrapotassium;iron(2+);hexacyanide Chemical compound [K+].[K+].[K+].[K+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] XOGGUFAVLNCTRS-UHFFFAOYSA-N 0.000 description 3
- JYLNVJYYQQXNEK-UHFFFAOYSA-N 3-amino-2-(4-chlorophenyl)-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(CN)C1=CC=C(Cl)C=C1 JYLNVJYYQQXNEK-UHFFFAOYSA-N 0.000 description 2
- MHUWZNTUIIFHAS-XPWSMXQVSA-N 9-octadecenoic acid 1-[(phosphonoxy)methyl]-1,2-ethanediyl ester Chemical compound CCCCCCCC\C=C\CCCCCCCC(=O)OCC(COP(O)(O)=O)OC(=O)CCCCCCC\C=C\CCCCCCCC MHUWZNTUIIFHAS-XPWSMXQVSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229920000180 alkyd Polymers 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- JBDSSBMEKXHSJF-UHFFFAOYSA-N cyclopentanecarboxylic acid Chemical compound OC(=O)C1CCCC1 JBDSSBMEKXHSJF-UHFFFAOYSA-N 0.000 description 2
- 239000001023 inorganic pigment Substances 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000012286 potassium permanganate Substances 0.000 description 2
- 229940047047 sodium arsenate Drugs 0.000 description 2
- GTSHREYGKSITGK-UHFFFAOYSA-N sodium ferrocyanide Chemical compound [Na+].[Na+].[Na+].[Na+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] GTSHREYGKSITGK-UHFFFAOYSA-N 0.000 description 2
- 239000000264 sodium ferrocyanide Substances 0.000 description 2
- 235000012247 sodium ferrocyanide Nutrition 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 2
- 235000019801 trisodium phosphate Nutrition 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- CXHIZMNPBASSRI-UHFFFAOYSA-N C(C=1C(C(=O)O)=CC=CC1)(=O)O.C(C=1C(C(=O)O)=CC=CC1)(=O)O.C(C=1C(C(=O)O)=CC=CC1)(=O)O.C(C=1C(C(=O)O)=CC=CC1)(=O)O.C=C Chemical compound C(C=1C(C(=O)O)=CC=CC1)(=O)O.C(C=1C(C(=O)O)=CC=CC1)(=O)O.C(C=1C(C(=O)O)=CC=CC1)(=O)O.C(C=1C(C(=O)O)=CC=CC1)(=O)O.C=C CXHIZMNPBASSRI-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- FYDGRHCYVIUOSL-UHFFFAOYSA-L S(=O)([O-])[O-].[Ag+2] Chemical compound S(=O)([O-])[O-].[Ag+2] FYDGRHCYVIUOSL-UHFFFAOYSA-L 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 1
- 229920001893 acrylonitrile styrene Polymers 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- DHZSIQDUYCWNSB-UHFFFAOYSA-N chloroethene;1,1-dichloroethene Chemical compound ClC=C.ClC(Cl)=C DHZSIQDUYCWNSB-UHFFFAOYSA-N 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- FMWMEQINULDRBI-UHFFFAOYSA-L copper;sulfite Chemical compound [Cu+2].[O-]S([O-])=O FMWMEQINULDRBI-UHFFFAOYSA-L 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- DCXPBOFGQPCWJY-UHFFFAOYSA-N trisodium;iron(3+);hexacyanide Chemical compound [Na+].[Na+].[Na+].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCXPBOFGQPCWJY-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/04—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using a single signalling line, e.g. in a closed loop
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
- Printing Plates And Materials Therefor (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Description
Fremgangsmåte til fremstilling av litografiske plater for trykking. Process for the production of lithographic plates for printing.
Foreliggende oppfinnelse vedrører The present invention relates to
fremgangsmåte ved fremstilling av litografiske plater for trykking fremstilt ved method in the production of lithographic plates for printing produced by
elektrofotografisk reproduksjon. electrophotographic reproduction.
Det er kjent å fremstille grunnplater It is known to produce base plates
ved elektrofotografisk reproduksjon med by electrophotographic reproduction with
slike ytre mål og en slik form at de passer such outer dimensions and such a shape that they fit
til sylinderen på en litografisk trykkepresse, enten av den mindre type som bru-kes i kontorer eller de større trykkepres-ser. En slik trykkeplate kan bestå av et to the cylinder of a lithographic printing press, either of the smaller type used in offices or the larger printing presses. Such a printing plate can consist of a
papirark som på overflaten er forsynt med sheets of paper which are provided on the surface
et belegg som kan gjøres lysfølsomt og består av et fotoledende, fint-fordelt anorganisk farvemateriale, f. eks. sinkoxyd i en a coating that can be made light-sensitive and consists of a photoconductive, finely divided inorganic coloring material, e.g. zinc oxide in a
bærer av et filmdanende elektrisk isolerende materiale, f. eks. av den art som er carrier of a film-forming electrically insulating material, e.g. of the kind that is
beskrevet i de østerrikske patenter 211 664, described in the Austrian patents 211 664,
212 153 og 212 154. Disse grunnplater kan 212 153 and 212 154. These base plates can
også bestå av ark av plast som er forsynt also consist of sheets of plastic that are provided
med belegg av denne art, såsom beskrevet i with coatings of this nature, as described in
de østerrikske patenter 212 151 og 212 152 the Austrian patents 212 151 and 212 152
En bærer som foretrekkes for det fotoledende farvemateriale, er en styrenert al-kydpolymer, blant annet kjent fra øster-riksk patent nr. 211 666. A carrier that is preferred for the photoconductive color material is a styrenated alkyd polymer, known among other things from Austrian Patent No. 211,666.
Ved litografisk trykking behandles en In lithographic printing, one is processed
plate som er fremstilt av en slik trykkeplate, på vanlig måte med vann, slik at plate produced from such a printing plate, in the usual way with water, so that
bakgrunnsarealene blir hydrofile, hvorved the background areas become hydrophilic, whereby
trykksverten fester seg til de hydrofobe the ink sticks to the hydrophobic ones
tegn eller bilder på platen, men ikke til characters or images on the disc, but not to
bakgrunnsområdene. Denne trykksverte the background areas. This printing ink
overføres deretter til et annet papirark is then transferred to another sheet of paper
ved hjelp av en offset-trykkpresse. Som using an offset printing press. As
følge av dette består det siste trinn ved As a result, the last step consists of
fremstillingen av en trykkeplate av denne art i å gjøre bakgrunnsarealene på platen the production of a printing plate of this nature in making the background areas of the plate
hydrofile, slik at de fuktet med vann ikke er mottagelige for litografisk blekk. hydrophilic, so that when moistened with water they are not susceptible to lithographic ink.
Formålet med oppfinnelsen er å skaf-fe en forbedret elektrofotografisk trykkeplate som på overflaten har billedarealer av et smeltet harpiks-tonemateriale som er hydrofobe, samt blanke bakgrunnsare-aler som er hydrofile. The purpose of the invention is to provide an improved electrophotographic printing plate which on the surface has image areas of a molten resin tone material which are hydrophobic, as well as blank background areas which are hydrophilic.
Offset-trykkeplaten fremstilles ved elektrofotografisk reproduksjon og egner seg for reproduksjon av bilder ved offset-metoden. I likhet med de tidligere kjente plater omfatter den et selvbærende grunnark som på en av sine sider er forsynt med et ytre belegg bestående av et fotofølsomt, finfordelt anorganisk pigmentmateriale i en bærer som er filmdannende og isolerende og som på en del av sin overflate er forsynt med hydrofobe billedarealer som er dannet av en tynn harpiksfilm frembragt ved smelting av tonematerialet ved en elektrofotografisk reproduksjonsprosess og farvet på en slik måte at den er klart synlig. The offset printing plate is produced by electrophotographic reproduction and is suitable for the reproduction of images by the offset method. Like the previously known plates, it comprises a self-supporting base sheet which is provided on one of its sides with an outer coating consisting of a photosensitive, finely divided inorganic pigment material in a carrier which is film-forming and insulating and which is provided on part of its surface with hydrophobic image areas formed from a thin resin film produced by melting the tonal material in an electrophotographic reproduction process and colored in such a way as to be clearly visible.
Offset-trykkeplatene ifølge oppfinnelsen adskiller seg fra de tidligere kjente fremstillet ved elektrofotografiske re-produksjonsmetoder og er en klar for-bedring av disse ved at bakgrunnen eller de blanke arealer på overflaten er hydrofile; dette er oppnådd ved at der er anordnet et organisk filmdannende materiale som omfatter karboxyl-grupper i kjemisk forbindelse med bakgrunnsarealene. Dette organiske filmdannende materiale som bærer karboxylgrupper, kan f. eks. bestå av polyakrylsyre, karboxymetylcellulose eller alginsyre. The offset printing plates according to the invention differ from the previously known ones produced by electrophotographic reproduction methods and are a clear improvement of these in that the background or the blank areas on the surface are hydrophilic; this has been achieved by arranging an organic film-forming material which comprises carboxyl groups in chemical connection with the background areas. This organic film-forming material which carries carboxyl groups can, e.g. consist of polyacrylic acid, carboxymethyl cellulose or alginic acid.
Bakgrunnsarealene på offset-trykkeplaten ifølge oppfinnelsen kan fordelaktig, i tillegg til det organiske filmdannende materiale, ytterligere inneholde et komplekst anorganisk salt d kjemisk forbindelse med bakgrunnsarealet. Det komplekse anorganiske salt kan f. eks. bestå av natrium-ferrocyanid, kaliumferrocyanid, natrium-ferricyanid, kaliumferricyanid, natrium-permanganat, kaliumpermanganat, natriumarsenat, kaliumarsenat, etc. The background areas on the offset printing plate according to the invention can advantageously, in addition to the organic film-forming material, further contain a complex inorganic salt d chemical compound with the background area. The complex inorganic salt can e.g. consist of sodium ferrocyanide, potassium ferrocyanide, sodium ferricyanide, potassium ferricyanide, sodium permanganate, potassium permanganate, sodium arsenate, potassium arsenate, etc.
Ved fremstilling av den forbedrede offset-trykkeplate dfølge oppfinnelsen er fremgangsmåten forskjellig fra de tidligere kjente ved at overflaten av den del-vis fremstilte plate behandles med en vandig oppløsning av et vannoppløselig, organisk, filmdannende materiale med frie karboxylgrupper og et vannoppløselig komplekst anorganisk salt som gir opp-løsningen en pH-verdi fra 3 til 7,25, even-tuelt ved tilsetning av et buffermateriale som bringer pH-verdien innenfor det nevnte område, f. eks. trinatriumfosfat. Det organiske filmdannende materiale i denne vandige oppløsning utgjøres av polyakrylsyre, karboxymetylcellulose eller alginsyre og det komplekse, anorganiske salt er na-triumferrocyanid, kaliumferrocyanid, na-triumpermanganat, kaliumpermanganat, natriumarsenat eller kaliumarsenat. En slik vandig oppløsning kan bestå av 0,5 til 2.5 vektpst. polyakrylsyre, 0,5 til 2,5 vektpst. kaliumferrocyanid, samt et buffermateriale, fortrinnsvis trinatriumfosfat. When producing the improved offset printing plate according to the invention, the method differs from those previously known in that the surface of the partially produced plate is treated with an aqueous solution of a water-soluble, organic, film-forming material with free carboxyl groups and a water-soluble complex inorganic salt which gives the solution a pH value from 3 to 7.25, possibly by adding a buffer material that brings the pH value within the mentioned range, e.g. trisodium phosphate. The organic film-forming material in this aqueous solution consists of polyacrylic acid, carboxymethyl cellulose or alginic acid and the complex, inorganic salt is sodium ferrocyanide, potassium ferrocyanide, sodium permanganate, potassium permanganate, sodium arsenate or potassium arsenate. Such an aqueous solution can consist of 0.5 to 2.5% by weight. polyacrylic acid, 0.5 to 2.5 wt. potassium ferrocyanide, as well as a buffer material, preferably trisodium phosphate.
Denne vandige oppløsning gjør bakgrunnsarealene, dvs. de blanke arealer, hydrofile, slik at de kan fuktes med vann. This aqueous solution makes the background areas, i.e. the glossy areas, hydrophilic, so that they can be wetted with water.
Denne behandling består i at den vannholdige oppløsning strykes lett på overflaten av den fremkalte plate, f. eks. ved hjelp av en bomullssvaber, slik at der dannes en tynn og jevn film av den vannholdige oppløsning på den fremkalte overflate. Denne behandling gjør bakgrunnsarealene på trykkoverflaten hydrofile uten at den hydrofobe egenskap av harpiks-billedarealene forandres, slik at platen derved egner seg for offset-trykking. This treatment consists in the aqueous solution being lightly brushed on the surface of the developed plate, e.g. using a cotton swab, so that a thin and uniform film of the aqueous solution is formed on the developed surface. This treatment makes the background areas on the print surface hydrophilic without changing the hydrophobic property of the resin image guide areas, so that the plate is thereby suitable for offset printing.
Oppfinnelsen skal beskrives nærmere i det følgende under henvisning til teg-ningen, hvor fig. 1 viser et snitt av en elektrofotografisk grunntrykkeplate som lett kan gjøres lysfølsom og som anvendes ved fremstillingen av en offset-trykkeplate ifølge oppfinnelsen, fig. 2 et snitt gjennom en alternativ utførelse av trykkeplaten ifølge fig. 1, som egner seg for fremstilling av offset-trykkeplaten ifølge opp-finelsen, fig. 3 et snitt gjennom en offset-trykkeplate ifølge oppfinnelsen, og fig. 4 et planriss av offsettrykkeplaten dfølge oppfinnelsen. The invention will be described in more detail below with reference to the drawing, where fig. 1 shows a section of an electrophotographic basic printing plate which can easily be made light-sensitive and which is used in the production of an offset printing plate according to the invention, fig. 2 a section through an alternative embodiment of the printing plate according to fig. 1, which is suitable for the production of the offset printing plate according to the invention, fig. 3 a section through an offset printing plate according to the invention, and fig. 4 a plan view of the offset printing plate according to the invention.
På fig. 1 til 3 betegner 1 et grunnark som kan bestå av papir eller en selvbærende plastfilm som på overflaten er forsynt med en tynn film 2 som på sin side på overflaten er forsynt med en hvilken som helst vanlig film eller et belegg 3 av et finfordelt fotoledende, anorganisk pigmentmateriale som lett kan gjøres følsomt og er anbragt i en bærer bestående av et organisk filmdannende, fast materiale. In fig. 1 to 3, 1 denotes a base sheet which may consist of paper or a self-supporting plastic film which is provided on the surface with a thin film 2 which in turn is provided on the surface with any ordinary film or a coating 3 of a finely divided photoconductive, inorganic pigment material that can be easily sensitized and is placed in a carrier consisting of an organic film-forming, solid material.
Hvis grunnarket 1 består av papir, kan filmen 2 bestå av et vanlig overtrekksmateriale, f. eks. en kasein-kalkfilm. Denne kombinasjon av et papirark 1 og en film 2 er i virkeligheten et vanlig belagt papir som fåes i handelen. Filmen 2 på papiret kan også bestå av en klar lakk, i hvilket tilfelle der kan anbringes et fint-fordelt elektrisk ledende materiale i lakken. Filmen kan også bestå av en tynn bøyelig metallfilm. If the base sheet 1 consists of paper, the film 2 can consist of a common covering material, e.g. a casein-lime film. This combination of a paper sheet 1 and a film 2 is in reality a common coated paper available in the trade. The film 2 on the paper can also consist of a clear varnish, in which case a finely distributed electrically conductive material can be placed in the varnish. The film can also consist of a thin flexible metal film.
Hvis grunnarket 1 består av papir og filmen 2 av et vanlig overtrekksmateriale, som f. eks. den nevnte kasein-kalkfilm, kan papiret gjøres elektrisk ledende ved at det inneholder en naturlig fuktighetsmeng-de. Det er imidlertid å foretrekke at det impregneres med et hygroskopisk anorganisk salt, f. eks. sinkklorid, litiumklorid, kaliumacetat, kalsiumklorid, sinknitrat eller kaliumkarbonat, hvorved det blir jevnt ledende under forskjellige klimatiske forhold. Hvis filmen 2 består av en lakk som inneholder et fintfordelt elektrisk ledende fast materiale, som f. eks. grafitt, alumi-nium-pigment, kobber i pulverform, bron-se i pulverform, blyoxyd, tinnoxyd, kobber-sulfitt, sølvsulfitt eller elektrisk ledende kjønrøk, eller en tynn bøyelig film av metall, såsom en aluminiumfilm som er påført ved vakuum-metallisering eller katodisk anbringelse, vil filmen 2 ha den elektriske ledningsevne som kreves for at arket skal bli elektrofotofølsomt. If the base sheet 1 consists of paper and the film 2 of a common covering material, such as e.g. the aforementioned casein-lime film, the paper can be made electrically conductive by containing a natural amount of moisture. However, it is preferable that it is impregnated with a hygroscopic inorganic salt, e.g. zinc chloride, lithium chloride, potassium acetate, calcium chloride, zinc nitrate or potassium carbonate, making it uniformly conductive under different climatic conditions. If the film 2 consists of a varnish containing a finely distributed electrically conductive solid material, such as e.g. graphite, aluminum pigment, copper powder, bronze powder, lead oxide, tin oxide, copper sulphite, silver sulphite or electrically conductive carbon black, or a thin flexible film of metal, such as an aluminum film applied by vacuum metallisation or cathodic deposition, the film 2 will have the electrical conductivity required for the sheet to become electrophotosensitive.
Grunnarket 1 kan bestå av en ikke understøttet plastfilm, f. eks. en polyvinyl-kloridfiilm, en vinylklorid-vinylacetat-kopo-lymer film, en vinylidenklorid-vinylklor-dikopolymer-film, en cellulose-acetatfilm, en cellulosetriacetatfilm, en celluloseaceto-butyratfilm, en cellulose-nitratfilm, en etylcellulosefilm, en polytetrafluoretylen-film, en polyklorotrifluoro-etylenfilm, en polystyrolfilm, en akryl-nitrilstyrenkopo-lymerfilm, en polyamid-(nylon-) film, en polyetylenterafthalatfilm, en polymetylme-takrylatfilm, en polyetylenfilm, en gummi-hydrokloridfilm, en vinylnitrilgummifilm, eller en hvilken som helst av de andre anvendbare kjente typer. Disse filmer pla-stifiseres selvsagt i de tilfelle hvor plasten krever dette, for at der skal dannes en sterk, bøyelig og selvbærende film. Av disse forskjellige plastfilmer foretrekkes polyetylenterefthalatfilmen på grunn av dens ypperlige dimensjonsstabile egenskaper, høy strekkstyrke, høy rivestyrke og gode folde-utholdende egenskaper. The base sheet 1 can consist of an unsupported plastic film, e.g. a polyvinyl chloride film, a vinyl chloride-vinyl acetate copolymer film, a vinylidene chloride-vinyl chlorine dicopolymer film, a cellulose acetate film, a cellulose triacetate film, a cellulose aceto-butyrate film, a cellulose nitrate film, an ethyl cellulose film, a polytetrafluoroethylene film, a polychlorotrifluoroethylene film, a polystyrene film, an acrylonitrile styrene copolymer film, a polyamide (nylon) film, a polyethylene terephthalate film, a polymethyl methacrylate film, a polyethylene film, a rubber hydrochloride film, a vinyl nitrile rubber film, or any of the other applicable known types. These films are of course plasticized in cases where the plastic requires this, so that a strong, flexible and self-supporting film is formed. Of these various plastic films, the polyethylene terephthalate film is preferred because of its excellent dimensionally stable properties, high tensile strength, high tear strength and good fold-resistant properties.
I det tilfelle at grunnarket 1 består av en ikke understøttet plastfilm, kreves der at filmen 2 enten består av en lakk som inneholder et fint-fordelt elektrisk ledende fast materiale eller at den består av en tynn bøyelig metallfilm, såsom en som kan anbringes ved metallisering under vakuum eller ved katodisk påføring for at arket skal bli elektrofotografisk. In the event that the base sheet 1 consists of an unsupported plastic film, it is required that the film 2 either consists of a varnish containing a finely divided electrically conductive solid material or that it consists of a thin flexible metal film, such as one that can be applied by metallization under vacuum or by cathodic application for the sheet to become electrophotographic.
Den elektrofotografiske grunnplate som er vist på flg. 2, kan, i likhet med det som er vist på fig. 1, bestå av et grunnark 1 av papir eller en selvbærende plastfilm. I det tilfelle at arket 1 består av papir, betegner 4 en film av et overtrekksmateriale for papir, f. eks. en kasein-kalkfilm, idet filmen 2 enten består av en klar lakk, en klar lakk med en suspensjon av et fint-fordelt elektrisk ledende fast materiale som er dispergert i et materiale av et organisk filmdannende fast materiale, eller av en bøyelig film av metall. Hvis arket 1 består av en bøyelig selvbærende plast og filmen 2 av en tynn bøyelig metallfilm, består filmen 4 av en harpiksfilm som virker som et underlag og for-bedrer adhesjonen mellom plastfilmens 1 overflater og metallfilmen. I dette tilfelle kan filmen 4 f. eks. bestå av et tynt lag av en kopolyester av etylentetrafthalat og etylensebasat eller en lignende polyester. The electrophotographic base plate shown in fig. 2 can, like that shown in fig. 1, consist of a base sheet 1 of paper or a self-supporting plastic film. In the event that the sheet 1 consists of paper, 4 denotes a film of a coating material for paper, e.g. a casein-lime film, the film 2 either consisting of a clear varnish, a clear varnish with a suspension of a finely divided electrically conductive solid material dispersed in a material of an organic film-forming solid material, or of a flexible film of metal . If the sheet 1 consists of a flexible self-supporting plastic and the film 2 of a thin flexible metal film, the film 4 consists of a resin film which acts as a substrate and improves the adhesion between the surfaces of the plastic film 1 and the metal film. In this case, the film 4 can e.g. consist of a thin layer of a copolyester of ethylene tetraphthalate and ethylene sebasate or a similar polyester.
Fig. 3 viser et snitt av en offset-trykkeplate ifølge oppfinnelsen; denne er blitt fremstilt på den fotolitografiske grunnplate ifølge fig. 1. Et smeltet tonemateriale 5, 5 er anbragt på filmens 3 overflate som består av det fotoledende pigment i det filmdannende, isolerende materiale av den styrenerte alkyd-kopolymerharpiks ved hjelp av den elektrofotografiske reproduk-sjonspresse. Områder som dannes av det smeltede tonemateriale 5, kan enten dan-ne et positivt eller et negativt bilde; ved litografiske trykkeplater danner disse som Fig. 3 shows a section of an offset printing plate according to the invention; this has been produced on the photolithographic base plate according to fig. 1. A melted tone material 5, 5 is placed on the surface of the film 3 which consists of the photoconductive pigment in the film-forming, insulating material of the styrenated alkyd copolymer resin by means of the electrophotographic reproduction press. Areas formed by the melted tone material 5 can either form a positive or a negative image; in the case of lithographic printing plates these form which
regel positive bilder, idet de danner hy-drofobiske områder på overflatene og gjør dem mottagelige for litografisk trykksverte. Områdene 6, 6 er ubelagte områder på filmen 3 og er behandlet med en vann-komposisjon ifølge oppfinnelsen, slik at de er blitt hydrofile. Som nevnt ovenfor inneholder disse områder molekyler av det organiske filmdannende materiale og av det komplekse anorganiske salt, oksalatet eller kromsyren, som er blitt avsatt fra den vannholdige komposisjon. usually positive images, as they form hydrophobic areas on the surfaces and make them susceptible to lithographic printing ink. The areas 6, 6 are uncoated areas on the film 3 and have been treated with a water composition according to the invention, so that they have become hydrophilic. As mentioned above, these areas contain molecules of the organic film-forming material and of the complex inorganic salt, oxalate or chromic acid, which have been deposited from the aqueous composition.
Den utførelse som er vist på fig. 4, er forsynt med en gjennomhullet kant for befestigelse av platen til sylinderen i en litografisk trykkepresse. Platens to lang-sider og bredden er tilpasset målene på den spesielle trykkepresse som den skal anvendes ved. Denne trykkeplate kan ha det tverrsnitt som er vist på fig. 3 og har på én av overflatene et bilde som er dannet av områdene 5, 5 av det smeltede tonemateriale som skal reproduseres ved trykking. The embodiment shown in fig. 4, is provided with a perforated edge for attaching the plate to the cylinder in a lithographic printing press. The plate's two long sides and width are adapted to the dimensions of the special printing press with which it is to be used. This printing plate can have the cross-section shown in fig. 3 and has on one of the surfaces an image formed by the areas 5, 5 of the melted tone material to be reproduced by printing.
En trykkeplate ifølge oppfinnelsen fremstilt av den fotolitografiske grunnplate ifølge fig. 2 har et tverrsnitt som er identisk med det ifølge fig. 3, unntatt at den har en film 4 mellom grunnarket 1 og filmen 2. A printing plate according to the invention produced from the photolithographic base plate according to fig. 2 has a cross-section which is identical to that according to fig. 3, except that it has a film 4 between the base sheet 1 and the film 2.
Trykkeplater fremstilt ved de kjente elektrofotografiske fremgangsmåter har medført bestemte fordeler i forhold til trykkeplater fremstilt ved andre fremgangsmåter ved den hurtighet og letthet med hvilken de kan fremstilles. Etter en kortere tids bruk vil imidlertid bakgrunnsområdene ofte miste sine hydrofile egenskaper, slik at de tar opp mindre mengder trykksverte, hvilket kan medføre at bakgrunnsområdene på de trykte kopier gir et skittent og dårlig inntrykk. Bakgrunnsområdene på trykkeplater som er gjort hydrofile ved hjelp av den vannholdige oppløsning ifølge oppfinnelsen, beholder på den annen side på en utmerket måte sin egenskap å kunne fuktes av trykksverte og gir selv etter en lengere tids bruk trykte kopier med en ren bakgrunn fri for trykksverte. Printing plates produced by the known electrophotographic methods have entailed certain advantages compared to printing plates produced by other methods in the speed and ease with which they can be produced. After a shorter period of use, however, the background areas will often lose their hydrophilic properties, so that they take up smaller amounts of printing ink, which can result in the background areas on the printed copies giving a dirty and bad impression. The background areas of printing plates which have been rendered hydrophilic by means of the aqueous solution according to the invention, on the other hand, retain in an excellent way their ability to be wetted by printing ink and even after a longer period of use give printed copies with a clean background free of printing ink.
Claims (4)
Applications Claiming Priority (1)
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CH1065572 | 1972-07-17 |
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CH (1) | CH547532A (en) |
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JPS5150786A (en) * | 1974-10-29 | 1976-05-04 | Mitsubishi Electric Corp | IONKASHIKIKE MURITANCHIKI |
JPS52142999A (en) * | 1976-05-24 | 1977-11-29 | Nohmi Bosai Kogyo Co Ltd | Fire alarm facility |
DE2707409C2 (en) * | 1977-02-21 | 1985-02-21 | Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf | Ionization fire detector |
US4207558A (en) * | 1978-04-03 | 1980-06-10 | Pittway Corporation | Interconnection circuit for a plurality of alarm units |
USRE30620E (en) * | 1978-07-03 | 1981-05-19 | P. R. Mallory & Co. Inc. | High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means |
CH629905A5 (en) * | 1978-07-17 | 1982-05-14 | Cerberus Ag | GAS AND / OR FIRE DETECTING SYSTEM. |
JPS5555752U (en) * | 1978-10-12 | 1980-04-15 | ||
US4223303A (en) * | 1978-12-11 | 1980-09-16 | General Electric Company | Alarm devices for interconnected multi-device systems |
US4401978A (en) * | 1979-02-21 | 1983-08-30 | The Gamewell Corporation | Combination detector |
EP0039761A3 (en) * | 1980-05-09 | 1981-11-25 | Cerberus Ag | Fire annunciating arrangement and method |
JPH079680B2 (en) * | 1985-04-01 | 1995-02-01 | ホーチキ株式会社 | Analog fire alarm |
CH669859A5 (en) * | 1986-06-03 | 1989-04-14 | Cerberus Ag | |
DE58905587D1 (en) * | 1988-03-30 | 1993-10-21 | Cerberus Ag | Early fire detection procedures. |
JPH0259461U (en) * | 1988-10-21 | 1990-05-01 | ||
US6753786B1 (en) | 2000-08-11 | 2004-06-22 | Walter Kidde Portable Equipment, Inc. | Microprocessor-based combination smoke and carbon monoxide detector having intelligent hush feature |
US7068177B2 (en) * | 2002-09-19 | 2006-06-27 | Honeywell International, Inc. | Multi-sensor device and methods for fire detection |
US20080030352A1 (en) * | 2006-02-27 | 2008-02-07 | Thorn Security Limited | Methods and systems for gas detection |
CA2926453C (en) | 2013-10-07 | 2023-02-21 | Google Inc. | Visual and auditory user notification methods for smart-home hazard detector |
US9685061B2 (en) | 2015-05-20 | 2017-06-20 | Google Inc. | Event prioritization and user interfacing for hazard detection in multi-room smart-home environment |
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NO136269C (en) | 1977-08-17 |
CA1018680A (en) | 1977-10-04 |
BE801719A (en) | 1973-10-15 |
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DE2328872A1 (en) | 1974-01-31 |
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FR2193224B1 (en) | 1978-12-29 |
DE2328872B2 (en) | 1980-05-14 |
AT339777B (en) | 1977-11-10 |
ATA456073A (en) | 1977-02-15 |
BR7305317D0 (en) | 1974-08-22 |
GB1412164A (en) | 1975-10-29 |
ZA734853B (en) | 1974-06-26 |
AU5798673A (en) | 1975-01-16 |
AU474603B2 (en) | 1976-07-29 |
ES415905A1 (en) | 1976-02-01 |
FR2193224A1 (en) | 1974-02-15 |
DK138714B (en) | 1978-10-16 |
JPS4970691A (en) | 1974-07-09 |
HK57380A (en) | 1980-10-16 |
IT988800B (en) | 1975-04-30 |
DK138714C (en) | 1979-03-19 |
US3909813A (en) | 1975-09-30 |
CH547532A (en) | 1974-03-29 |
FI59498B (en) | 1981-04-30 |
FI59498C (en) | 1981-08-10 |
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