EP0334840A1 - Blaues farbmittel für elektrophotographische aufzeichnungsverfahren mit positiver steuerwirkung. - Google Patents
Blaues farbmittel für elektrophotographische aufzeichnungsverfahren mit positiver steuerwirkung.Info
- Publication number
- EP0334840A1 EP0334840A1 EP87900805A EP87900805A EP0334840A1 EP 0334840 A1 EP0334840 A1 EP 0334840A1 EP 87900805 A EP87900805 A EP 87900805A EP 87900805 A EP87900805 A EP 87900805A EP 0334840 A1 EP0334840 A1 EP 0334840A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- toner
- colorant
- parts
- blue
- developers
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 18
- 230000008569 process Effects 0.000 title claims description 7
- 238000004040 coloring Methods 0.000 title description 2
- 230000001105 regulatory effect Effects 0.000 title 1
- 150000001875 compounds Chemical class 0.000 claims abstract description 5
- 238000002441 X-ray diffraction Methods 0.000 claims abstract description 3
- 238000010586 diagram Methods 0.000 claims abstract description 3
- 239000003086 colorant Substances 0.000 claims description 30
- 230000000694 effects Effects 0.000 claims description 14
- 239000000038 blue colorant Substances 0.000 claims description 4
- 239000013641 positive control Substances 0.000 claims description 4
- 239000006103 coloring component Substances 0.000 claims description 3
- 239000006025 fining agent Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000975 dye Substances 0.000 abstract description 6
- 239000001045 blue dye Substances 0.000 abstract 1
- 230000004913 activation Effects 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 19
- 239000011230 binding agent Substances 0.000 description 18
- 239000003795 chemical substances by application Substances 0.000 description 18
- 239000002585 base Substances 0.000 description 16
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 7
- 230000032683 aging Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 5
- 230000011514 reflex Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical class OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 150000001805 chlorine compounds Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- SGHZXLIDFTYFHQ-UHFFFAOYSA-L Brilliant Blue Chemical compound [Na+].[Na+].C=1C=C(C(=C2C=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C=2C(=CC=CC=2)S([O-])(=O)=O)C=CC=1N(CC)CC1=CC=CC(S([O-])(=O)=O)=C1 SGHZXLIDFTYFHQ-UHFFFAOYSA-L 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000007600 charging Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- -1 rosaniline sulfonic acid derivatives Chemical class 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 240000007930 Oxalis acetosella Species 0.000 description 1
- 235000008098 Oxalis acetosella Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- MCPLVIGCWWTHFH-UHFFFAOYSA-M disodium;4-[4-[[4-(4-sulfoanilino)phenyl]-[4-(4-sulfonatophenyl)azaniumylidenecyclohexa-2,5-dien-1-ylidene]methyl]anilino]benzenesulfonate Chemical compound [Na+].[Na+].C1=CC(S(=O)(=O)O)=CC=C1NC1=CC=C(C(=C2C=CC(C=C2)=[NH+]C=2C=CC(=CC=2)S([O-])(=O)=O)C=2C=CC(NC=3C=CC(=CC=3)S([O-])(=O)=O)=CC=2)C=C1 MCPLVIGCWWTHFH-UHFFFAOYSA-M 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- MDCWDBMBZLORER-UHFFFAOYSA-N triphenyl borate Chemical class C=1C=CC=CC=1OB(OC=1C=CC=CC=1)OC1=CC=CC=C1 MDCWDBMBZLORER-UHFFFAOYSA-N 0.000 description 1
- 150000004961 triphenylmethanes Chemical class 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
-
- 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
- G03G9/0906—Organic dyes
- G03G9/0912—Indigoid; Diaryl and Triaryl methane; Oxyketone dyes
Definitions
- the present invention relates to a blue colorant based on a triaminotriphenylmethane dye for coloring toners and developers for electrophotographic recording processes, which is specifically substituted as a highly crystalline sulfate salt and is therefore particularly inexpensive
- the colorant is also suitable as a color-imparting component for blue and green toners or developers or as a fining agent for black and brown toners or developers.
- a "latent charge image” is generated on a photoconductor. This is done, for example, by charging the photoconductor by means of a corona discharge and then imagewise exposing the electrostatically charged surface of the photoconductor, the exposure of the charge to the grounded base at the exposed locations being effected by the exposure.
- the "latent charge image” thus generated is then developed by applying a toner.
- the toner is transferred from the photoconductor to, for example, paper, textiles, foils or plastic and is fixed there, for example by pressure, radiation, heat or the action of solvents.
- the photoconductor used is then cleaned and is available for a new recording process.
- Toner binder (variation of resin / resin components or wax / wax components), the influence of control agents or other additives or the influence of carriers (for two-component developers) and magnetic pigments (for (U.S. Patent 2,221,776).
- a measure of the toner quality is its specific chargeability Q / M (charge per unit mass).
- control agents also called charge control agents
- the extent of the control effect is important because a higher effectiveness allows a lower amount to be used.
- toner binders alone generally have a strong change in the chargeability as a function of the activation time, it is the task of a charge control agent to set the sign and amount of the toner chargeability on the one hand and the driftability drift of the toner binder on the other counteract and ensure constant toner chargeability.
- Charge control agents which cannot prevent the toner or developer from showing a high charge drift (aging) over a longer period of use, which can even cause the toner or developer to undergo a charge reversal, are therefore unsuitable in practice.
- the aim of the present invention was therefore to find a charge control agent with a positive control effect, which can be adjusted as a function of concentration and whose charge control properties help the toner or developer to show as little aging as possible, and also as a colorant for blue and green or as a fining additive for black and yellow , red and brown toner or developer is suitable.
- nigrosines for example, nigrosines, quaternary ammonium compounds (US Pat. No. 4,560,635) or metal complexes (EP 0 141 377) are frequently used as charge control agents.
- nigrosines for example, nigrosines, quaternary ammonium compounds (US Pat. No. 4,560,635) or metal complexes (EP 0 141 377) are frequently used as charge control agents.
- Triphenylmethane dyes as positive charge control agents are described in numerous patents, but the previously claimed compounds have hardly been used because they have always had certain deficiencies.
- Japanese patent applications 58-97056 and 56-46248 describe the use of special rosaniline sulfonic acid derivatives as positive charge control agents.
- DE-OS 3 527 306 describes the chlorides of certain triphenylmethane dyes as positive charge control agents.
- Japanese patent application 60-107654 the effect of halogenated triphenylmethane dyes, and in the examples of Japanese patent applications 59-77447,
- 61-6661 and 52-113739 will have the effect of some Salts (triphenylborates, chlorides, hydrogen sulfates) of special triphenylmethane dye derivatives are described.
- color base sulfate is the product of the reaction of a phenylimino-2,5-cyclohexadien-1-ylidene methylene) - bis-diphenylamine, the "color base ", with sulfuric acid) has a very high positive concentration-dependent control effect, and that this highly crystalline color base sulfate gives toners or developers surprisingly favorable properties with regard to their aging in triboelectric charging and is therefore particularly suitable for practical use.
- this colorant is suitable as a coloring component for blue and green or as a finishing component for black, yellow, red and brown toners or developers.
- the present invention thus relates to a blue colorant with a positive control effect, consisting essentially of the compound of the formula
- a toner with 5 percent by weight of the colorant according to the invention has a chargeability of + 49.1 ⁇ C / g
- a toner with 1 or 0.5 percent by weight of the colorant according to the invention has a chargeability of + 21.5 ⁇ C / g or + 15, 8 ⁇ C / g (see Examples 1 to 3 below).
- the monosulfonic acid (reflex blue R, CI pigment blue 61) of the claimed compound is used instead of the color base sulfate according to the invention, this shows a much lower charge control property in the corresponding toner.
- control agent In contrast to the control agent according to the invention, an addition of 0.5 percent by weight of this control agent (monosulfonic acid) is therefore no longer sufficient to counteract the triboelectric, negative self-chargeability of the resin (toner binder). With regard to the constancy of its charge control effect (aging), poorer properties can be seen up to the reversal of the polarity of the chargeability (comparative example 6). After a certain activation period, this control means is no longer able to counteract the triboelectric negative self-chargeability of the resin sufficiently.
- the highly crystalline color base sulfate according to the invention has, compared to, for example, the chlorides of the corresponding color base, significantly more favorable charge control properties (comparative example 5), just as toners or developers with the highly crystalline modification of the color base sulfate according to the invention show a significantly better long-term durability (lower signs of aging) than those with an X-ray amorphous Modification of the color base sulfate (comparative example 4).
- triphenylmethane color base (CI Solvent Blue 125) used in Comparative Examples 9, 10 and 11 is not suitable in practice, on the one hand because of its moderate charge control ability, on the other hand because of the poor consistency of its charge control effect (aging), which leads to the reversal of polarity of the toner leads (Comparative Example 9).
- the preparation of the colorant according to the invention is described in DE-PS 1 919 724.
- the colorant according to the invention differs in its significantly stronger, positive charge control behavior and in the significantly better constancy of its charge control effect.
- the dyeing and control agent according to the invention allows a toner or developer to be colored at the same time or to be beautiful and, depending on the concentration, targeted triboelectrically positive control, which among other things. has the advantage that in addition to the colorant, additional control agent substance does not have to be incorporated into the already complex toner formulations. This eliminates problems of compatibility, miscibility or tax funds migration.
- either dried and ground colorant or an aqueous dispersion or a press cake can be used to incorporate the colorant according to the invention into the toner binder.
- the level of electrostatic charging of the toner using the claimed colorant was measured on standard systems under the same conditions (such as the same dispersion times, same particle size distribution, same particle shape) at 23 ° C. and 50% relative atmospheric humidity.
- the activation of the toner in a two-component developer is carried out by swirling the toner with a carrier (3 parts toner to 97 parts carrier) on a roller bench (150 revolutions per minute).
- the desired particle fraction was activated with a carrier made of magnetite particles of size 50 to 200 ⁇ m of the type 90 ⁇ m xerography carrier from Plasma Materials Inc., coated with a styrene-methacrylate copolymer 90:10.
- the measurement is carried out on a customary Q / M measuring stand (cf. J.H. Dessauer, H.E. Clark, "Xerography and related Processes", Focal Press, N.Y. 1965, page 289); by using a sieve with a mesh size of 25 ⁇ m (508 mesh per inch), from Gebrüder Kufferath, Düren, it was ensured that no carrier can be entrained in the toner blowouts.
- the Q / M value was determined to be + 49.1 ⁇ C / g.
- the Q / M value was determined to be + 34.7 ⁇ C / g.
- the Q / M value was determined to be + 21.5 ⁇ C / g.
- the Q / M value was determined to be + 15.8 ⁇ C / g.
- Example 2 The procedure was as described in Example 1, with the difference that instead of 5 parts of the colorant according to the invention, 5 parts of an X-ray amorphous form of the colorant according to the invention were used.
- the Q / M value was determined to be + 51.8 ⁇ C / g.
- the Q / M value was determined to be + 39.1 ⁇ C / g.
- the Q / M value was determined to be + 22.3 ⁇ C / g.
- the Q / M value was determined to be + 1.0 ⁇ C / g.
- the Q / M value was determined to be - 0.4 ⁇ C / g.
- the Q / M value was determined to be + 3.2 ⁇ C / g.
- Example 6 (Comparative Example) The procedure was as described in Example 1, with the difference that instead of 5 parts of the colorant according to the invention, 5 parts of the conventionally used triaminotriphenylmethane colorant (C.I. Pigment Blue 61 (reflex blue R)) were incorporated into the toner.
- C.I. Pigment Blue 61 (reflex blue R)
- the Q / M value was determined to be + 18.6 ⁇ C / g.
- the Q / M value was determined to be + 1.8 ⁇ C / g.
- the Q / M value was determined to be 5.2 ⁇ C / g.
- the Q / M value was determined to be 5.4 ⁇ C / g.
- Triaminotriphenylmethane colorant was incorporated into the toner. The one used for comparison
- Colorant is the C.I. Solvent Blue 66 (brilliant blue base
- the Q / M value was determined to be + 29.2 ⁇ C / g.
- the Q / M value was determined to be + 12.7 ⁇ C / g.
- the Q / M value was determined to be - 4.8 ⁇ C / g.
- Toner binder only 1 part of Brillantblau-Base SM was incorporated into 99 parts of toner binder.
- the Q / M value was determined to be + 4.0 ⁇ C / g.
- the Q / M value was determined to be - 6.5 ⁇ C / g.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
- Color Printing (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19863641525 DE3641525A1 (de) | 1986-12-05 | 1986-12-05 | Blaues farbmittel fuer elektrophotographische aufzeichnungsverfahren mit positiver steuerwirkung |
| DE3641525 | 1986-12-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0334840A1 true EP0334840A1 (de) | 1989-10-04 |
| EP0334840B1 EP0334840B1 (de) | 1993-03-10 |
Family
ID=6315505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87900805A Expired - Lifetime EP0334840B1 (de) | 1986-12-05 | 1987-01-07 | Blaues farbmittel für elektrophotographische aufzeichnungsverfahren mit positiver steuerwirkung |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5061585A (de) |
| EP (1) | EP0334840B1 (de) |
| JP (1) | JPH0774918B2 (de) |
| KR (1) | KR950003308B1 (de) |
| AU (1) | AU605475B2 (de) |
| DE (2) | DE3641525A1 (de) |
| WO (1) | WO1988004442A2 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69404736T2 (de) * | 1993-03-09 | 1998-01-08 | Hoechst Celanese Corp | Polymer-Elektrete mit verbesserter Ladungsstabilität |
| DE4447593C2 (de) * | 1994-10-05 | 2000-12-07 | Clariant Gmbh | Toner für elektrophotographische Entwickler, enthaltend ein Azogelbpigment |
| US6159649A (en) * | 1996-06-13 | 2000-12-12 | Clariant Gmbh | Electrophotographic, resin-containing, electret, or inkjet compositions containing magenta azo pigment and use thereof |
| DE10251394A1 (de) * | 2002-11-05 | 2004-05-13 | Clariant Gmbh | Blaues Farbmittel mit besonders hoher Reinheit und positiver triboelektrischer Steuerwirkung |
| US7442481B2 (en) | 2004-04-27 | 2008-10-28 | Xsys Print Solutions Us Llc | Charge control agent |
| US7305836B2 (en) * | 2004-05-19 | 2007-12-11 | Eden Innovations Ltd. | Cryogenic container and superconductivity magnetic energy storage (SMES) system |
| US9074301B2 (en) | 2010-10-25 | 2015-07-07 | Rick L. Chapman | Filtration materials using fiber blends that contain strategically shaped fibers and/or charge control agents |
| JP6264903B2 (ja) * | 2014-01-29 | 2018-01-24 | 東洋インキScホールディングス株式会社 | 有機el表示装置用青色着色組成物、カラーフィルタ、および有機el表示装置 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2010820A1 (en) * | 1968-06-13 | 1970-02-20 | Eastman Kodak Co | Electrostatic image development |
| JPS5111455A (de) * | 1974-07-19 | 1976-01-29 | Ricoh Kk | |
| JPS52113739A (en) * | 1976-03-19 | 1977-09-24 | Canon Inc | Electrostatically developing toner |
| JPS6040020B2 (ja) * | 1977-12-19 | 1985-09-09 | 株式会社リコー | 電子写真用正荷電シアントナー |
| JPS5579456A (en) * | 1978-12-13 | 1980-06-14 | Ricoh Co Ltd | Dry type electrophotographic toner |
| JPS5646248A (en) * | 1979-09-20 | 1981-04-27 | Mitsubishi Chem Ind Ltd | Dry type developer |
| JPS5897056A (ja) * | 1981-12-07 | 1983-06-09 | Mitsubishi Chem Ind Ltd | 静電荷現像用トナ− |
| JPS5977447A (ja) * | 1982-10-27 | 1984-05-02 | Ricoh Co Ltd | 電気的潜像現像用トナ− |
| DE3482119D1 (de) * | 1983-11-04 | 1990-06-07 | Hodogaya Chemical Co Ltd | Metallkomplexe. |
| JPS60107654A (ja) * | 1983-11-17 | 1985-06-13 | Hodogaya Chem Co Ltd | 電子写真用トナ− |
| JPS616661A (ja) * | 1984-06-20 | 1986-01-13 | Konishiroku Photo Ind Co Ltd | 磁性体分散型マイクロキヤリア |
| JPS6136758A (ja) * | 1984-07-30 | 1986-02-21 | Ricoh Co Ltd | 乾式電子写真用正荷電性トナ− |
| US4560635A (en) * | 1984-08-30 | 1985-12-24 | Xerox Corporation | Toner compositions with ammonium sulfate charge enhancing additives |
-
1986
- 1986-12-05 DE DE19863641525 patent/DE3641525A1/de not_active Withdrawn
-
1987
- 1987-01-07 AU AU68957/87A patent/AU605475B2/en not_active Expired
- 1987-01-07 JP JP62500817A patent/JPH0774918B2/ja not_active Expired - Lifetime
- 1987-01-07 EP EP87900805A patent/EP0334840B1/de not_active Expired - Lifetime
- 1987-01-07 DE DE8787900805T patent/DE3784736D1/de not_active Expired - Lifetime
- 1987-01-07 WO PCT/EP1987/000003 patent/WO1988004442A2/de not_active Ceased
- 1987-01-07 US US07/664,471 patent/US5061585A/en not_active Expired - Lifetime
- 1987-01-07 KR KR1019880700919A patent/KR950003308B1/ko not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| KR890700238A (ko) | 1989-03-10 |
| DE3784736D1 (de) | 1993-04-15 |
| JPH0774918B2 (ja) | 1995-08-09 |
| WO1988004442A2 (en) | 1988-06-16 |
| AU6895787A (en) | 1988-06-30 |
| WO1988004442A3 (en) | 1988-07-28 |
| EP0334840B1 (de) | 1993-03-10 |
| AU605475B2 (en) | 1991-01-17 |
| JPH02501506A (ja) | 1990-05-24 |
| KR950003308B1 (ko) | 1995-04-10 |
| US5061585A (en) | 1991-10-29 |
| DE3641525A1 (de) | 1988-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17P | Request for examination filed |
Effective date: 19890519 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI |
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| 17Q | First examination report despatched |
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