DE1168250B - Verfahren zur Herstellung mehrfarbiger Kopien nach einem elektrostatischen Verfahren - Google Patents
Verfahren zur Herstellung mehrfarbiger Kopien nach einem elektrostatischen VerfahrenInfo
- Publication number
- DE1168250B DE1168250B DER25126A DER0025126A DE1168250B DE 1168250 B DE1168250 B DE 1168250B DE R25126 A DER25126 A DE R25126A DE R0025126 A DER0025126 A DE R0025126A DE 1168250 B DE1168250 B DE 1168250B
- Authority
- DE
- Germany
- Prior art keywords
- powder
- zinc oxide
- coating material
- image
- developer powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 70
- 230000008569 process Effects 0.000 title claims description 31
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 150
- 239000000843 powder Substances 0.000 claims description 92
- 239000011787 zinc oxide Substances 0.000 claims description 74
- 239000000463 material Substances 0.000 claims description 54
- 239000011248 coating agent Substances 0.000 claims description 51
- 238000000576 coating method Methods 0.000 claims description 51
- 239000002245 particle Substances 0.000 claims description 46
- 238000002844 melting Methods 0.000 claims description 24
- 230000008018 melting Effects 0.000 claims description 23
- 239000000155 melt Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 9
- 229920001169 thermoplastic Polymers 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims description 7
- 239000003086 colorant Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000000049 pigment Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000001235 sensitizing effect Effects 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 235000014692 zinc oxide Nutrition 0.000 description 81
- 239000000203 mixture Substances 0.000 description 19
- 239000001993 wax Substances 0.000 description 14
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 12
- 230000035945 sensitivity Effects 0.000 description 11
- 238000001228 spectrum Methods 0.000 description 9
- 239000000975 dye Substances 0.000 description 8
- -1 hydrocarbon terpene Chemical class 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 150000001408 amides Chemical class 0.000 description 6
- CCCMONHAUSKTEQ-UHFFFAOYSA-N octadecene Natural products CCCCCCCCCCCCCCCCC=C CCCMONHAUSKTEQ-UHFFFAOYSA-N 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000006187 pill Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 235000007586 terpenes Nutrition 0.000 description 5
- FHNINJWBTRXEBC-UHFFFAOYSA-N Sudan III Chemical compound OC1=CC=C2C=CC=CC2=C1N=NC(C=C1)=CC=C1N=NC1=CC=CC=C1 FHNINJWBTRXEBC-UHFFFAOYSA-N 0.000 description 4
- 239000001055 blue pigment Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 229920005573 silicon-containing polymer Polymers 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229940099373 sudan iii Drugs 0.000 description 4
- MHKBSCHWKVCLJL-WUKNDPDISA-N (e)-octadec-2-enamide Chemical compound CCCCCCCCCCCCCCC\C=C\C(N)=O MHKBSCHWKVCLJL-WUKNDPDISA-N 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- XFFSCOOTVXBLCK-QAVVBOBSSA-N OC(=O)c1cc(ccc1O)\N=N\c1ccc(cc1)-c1ccc(cc1)\N=N\c1ccc(O)c(c1)C(O)=O Chemical compound OC(=O)c1cc(ccc1O)\N=N\c1ccc(cc1)-c1ccc(cc1)\N=N\c1ccc(O)c(c1)C(O)=O XFFSCOOTVXBLCK-QAVVBOBSSA-N 0.000 description 3
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 3
- 229960001506 brilliant green Drugs 0.000 description 3
- HXCILVUBKWANLN-UHFFFAOYSA-N brilliant green cation Chemical compound C1=CC(N(CC)CC)=CC=C1C(C=1C=CC=CC=1)=C1C=CC(=[N+](CC)CC)C=C1 HXCILVUBKWANLN-UHFFFAOYSA-N 0.000 description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 3
- 235000013539 calcium stearate Nutrition 0.000 description 3
- 239000008116 calcium stearate Substances 0.000 description 3
- SEACYXSIPDVVMV-UHFFFAOYSA-L eosin Y Chemical compound [Na+].[Na+].[O-]C(=O)C1=CC=CC=C1C1=C2C=C(Br)C(=O)C(Br)=C2OC2=C(Br)C([O-])=C(Br)C=C21 SEACYXSIPDVVMV-UHFFFAOYSA-L 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- GNBHRKFJIUUOQI-UHFFFAOYSA-N fluorescein Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 GNBHRKFJIUUOQI-UHFFFAOYSA-N 0.000 description 3
- 229940020947 fluorescein sodium Drugs 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 239000012169 petroleum derived wax Substances 0.000 description 3
- 235000019381 petroleum wax Nutrition 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- IICCLYANAQEHCI-UHFFFAOYSA-N 4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one Chemical compound O1C(=O)C(C(=C(Cl)C(Cl)=C2Cl)Cl)=C2C21C1=CC(I)=C(O)C(I)=C1OC1=C(I)C(O)=C(I)C=C21 IICCLYANAQEHCI-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 244000178870 Lavandula angustifolia Species 0.000 description 2
- 235000010663 Lavandula angustifolia Nutrition 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004203 carnauba wax Substances 0.000 description 2
- 235000013869 carnauba wax Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000001102 lavandula vera Substances 0.000 description 2
- 235000018219 lavender Nutrition 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 229930187593 rose bengal Natural products 0.000 description 2
- 229940081623 rose bengal Drugs 0.000 description 2
- STRXNPAVPKGJQR-UHFFFAOYSA-N rose bengal A Natural products O1C(=O)C(C(=CC=C2Cl)Cl)=C2C21C1=CC(I)=C(O)C(I)=C1OC1=C(I)C(O)=C(I)C=C21 STRXNPAVPKGJQR-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 206010052805 Drug tolerance decreased Diseases 0.000 description 1
- 239000004169 Hydrogenated Poly-1-Decene Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 239000001045 blue dye Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000019383 crystalline wax Nutrition 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- OARRHUQTFTUEOS-UHFFFAOYSA-N safranin Chemical compound [Cl-].C=12C=C(N)C(C)=CC2=NC2=CC(C)=C(N)C=C2[N+]=1C1=CC=CC=C1 OARRHUQTFTUEOS-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- JADVWWSKYZXRGX-UHFFFAOYSA-M thioflavine T Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C1=[N+](C)C2=CC=C(C)C=C2S1 JADVWWSKYZXRGX-UHFFFAOYSA-M 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/09—Colouring agents for toner particles
- G03G9/0926—Colouring agents for toner particles characterised by physical or chemical properties
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G13/00—Electrographic processes using a charge pattern
- G03G13/01—Electrographic processes using a charge pattern for multicoloured copies
- G03G13/013—Electrographic processes using a charge pattern for multicoloured copies characterised by the developing step, e.g. the properties of the colour developers
- G03G13/0133—Electrographic processes using a charge pattern for multicoloured copies characterised by the developing step, e.g. the properties of the colour developers developing using a step for deposition of subtractive colorant developing compositions, e.g. cyan, magenta and yellow
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G13/00—Electrographic processes using a charge pattern
- G03G13/06—Developing
- G03G13/08—Developing using a solid developer, e.g. powder developer
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G13/00—Electrographic processes using a charge pattern
- G03G13/20—Fixing, e.g. by using heat
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0825—Developers with toner particles characterised by their structure; characterised by non-homogenuous distribution of components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S101/00—Printing
- Y10S101/37—Printing employing electrostatic force
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
- Photoreceptors In Electrophotography (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72270758A | 1958-03-20 | 1958-03-20 | |
| US850392A US3060020A (en) | 1958-03-20 | 1959-11-02 | Method of electrophotographically producing a multicolor image |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1168250B true DE1168250B (de) | 1964-04-16 |
Family
ID=27110638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DER25126A Pending DE1168250B (de) | 1958-03-20 | 1959-03-11 | Verfahren zur Herstellung mehrfarbiger Kopien nach einem elektrostatischen Verfahren |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3060020A (en, 2012) |
| BE (1) | BE576841A (en, 2012) |
| DE (1) | DE1168250B (en, 2012) |
| FR (1) | FR1228380A (en, 2012) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3212887A (en) * | 1961-04-07 | 1965-10-19 | Minnesota Mining & Mfg | Laterally disposed coterminously adjacent multicolor area containing graphic reproduction receptor and electrophotographic process of using same |
| NL279524A (en, 2012) * | 1961-06-08 | |||
| US3342119A (en) * | 1961-12-08 | 1967-09-19 | Commw Of Australia | Xerographic safe-light |
| BE626695A (en, 2012) * | 1961-12-28 | |||
| BE635517A (en, 2012) * | 1962-06-16 | 1900-01-01 | ||
| US3206601A (en) * | 1963-05-21 | 1965-09-14 | Keuffel & Esser Co | Plastic film thermography |
| FR1401931A (fr) * | 1963-07-25 | 1965-06-04 | Hitachi Ltd | Procédé et dispositif de tirages polychromes |
| US3334000A (en) * | 1963-12-26 | 1967-08-01 | Xerox Corp | Method for simultaneous production of a plurality of microcircuit wafers |
| DE1572058A1 (de) * | 1964-12-30 | 1970-03-05 | Keuffel & Esser Co | Reprographisches Verfahren |
| BE674776A (en, 2012) * | 1965-01-08 | 1966-05-03 | ||
| US3472657A (en) * | 1965-04-30 | 1969-10-14 | Xerox Corp | Xerographic development method and apparatus |
| US3609082A (en) * | 1967-06-05 | 1971-09-28 | Xerox Corp | Electrostatic developer particles containing resin, colorant, metal salt and phthalate |
| US3502582A (en) * | 1967-06-19 | 1970-03-24 | Xerox Corp | Imaging systems |
| AU420588B2 (en) * | 1967-09-18 | 1972-01-17 | The Commonwealth Of Australia | Sensitised developers for electrophotography and electroradiography |
| US3870644A (en) * | 1969-02-10 | 1975-03-11 | Ricoh Kk | Liquid developer for plural-color electrophotography |
| US3702483A (en) * | 1970-12-23 | 1972-11-07 | Xerox Corp | Color rendition method |
| US3725283A (en) * | 1971-01-06 | 1973-04-03 | Xerox Corp | Electrostatographic developer containing uncoated glass-ceramic carrier particles |
| US4063946A (en) * | 1973-01-22 | 1977-12-20 | Rank Xerox Ltd. | Electrophotographic color reproduction process employing photoconductive material with dual light fatigue properties |
| JPS5628259B2 (en, 2012) * | 1973-02-13 | 1981-06-30 | ||
| GB1484582A (en) * | 1974-02-26 | 1977-09-01 | Agfa Gevaert | Liquid developers for the development of electrostatic charge patterns |
| JPS53127726A (en) * | 1977-04-13 | 1978-11-08 | Canon Inc | Electrostatic image developing toner |
| US4147645A (en) * | 1977-12-23 | 1979-04-03 | Xerox Corporation | Electrographic flash fusing toners |
| JPS5624359A (en) | 1979-08-02 | 1981-03-07 | Ricoh Co Ltd | Dry type binary developer for two-color electrophotography |
| US4299903A (en) * | 1980-07-03 | 1981-11-10 | Xerox Corporation | Emulsion polymerization process for dry positive toner compositions employs charge control agent as wetting agent |
| NL8105674A (nl) * | 1981-12-16 | 1983-07-18 | Coulter Stork Patents | Werkwijze voor het aanbrengen van een beschermende lichtdoorlatende bekleding op een op een substraat gevormd tonerbeeld. |
| US4510223A (en) * | 1983-02-07 | 1985-04-09 | Coulter Systems Corporation | Multicolor electrophotographic imaging process |
| US4725867A (en) * | 1986-05-01 | 1988-02-16 | Eastman Kodak Company | Apparatus for forming a multi-color image on an electrophotographic element which is sensitive to light outside the visible spectrum |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2297691A (en) * | 1939-04-04 | 1942-10-06 | Chester F Carlson | Electrophotography |
| US2584695A (en) * | 1947-08-14 | 1952-02-05 | Bell & Howell Co | Electrostatic reproduction process and apparatus |
| US2808328A (en) * | 1950-07-15 | 1957-10-01 | Carlyle W Jacob | Method and apparatus for xerographic reproduction |
| US2735785A (en) * | 1953-07-30 | 1956-02-21 | Process of electrostatic printing | |
| US2758939A (en) * | 1953-12-30 | 1956-08-14 | Rca Corp | Electrostatic printing |
| DE1050189B (en, 2012) * | 1955-01-03 | |||
| US2894840A (en) * | 1955-06-14 | 1959-07-14 | Haloid Xerox Inc | Method for fixing xerographic images |
| US2924519A (en) * | 1957-12-27 | 1960-02-09 | Ibm | Machine and method for reproducing images with photoconductive ink |
| US2972304A (en) * | 1959-06-02 | 1961-02-21 | Eastman Kodak Co | Electrostatic printing |
-
0
- BE BE576841D patent/BE576841A/xx unknown
-
1959
- 1959-03-11 DE DER25126A patent/DE1168250B/de active Pending
- 1959-03-19 FR FR789850A patent/FR1228380A/fr not_active Expired
- 1959-11-02 US US850392A patent/US3060020A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US3060020A (en) | 1962-10-23 |
| FR1228380A (fr) | 1960-08-29 |
| BE576841A (en, 2012) |
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