FR2443086A1 - Developpateur magnetique a un seul composant - Google Patents
Developpateur magnetique a un seul composantInfo
- Publication number
- FR2443086A1 FR2443086A1 FR7929229A FR7929229A FR2443086A1 FR 2443086 A1 FR2443086 A1 FR 2443086A1 FR 7929229 A FR7929229 A FR 7929229A FR 7929229 A FR7929229 A FR 7929229A FR 2443086 A1 FR2443086 A1 FR 2443086A1
- Authority
- FR
- France
- Prior art keywords
- electrodes
- binder
- monomer
- developer
- component magnetic
- 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
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
- G03G9/087—Binders for toner particles
- G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08706—Polymers of alkenyl-aromatic compounds
- G03G9/08708—Copolymers of styrene
- G03G9/08711—Copolymers of styrene with esters of acrylic or methacrylic acid
-
- 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
- G03G9/0821—Developers with toner particles characterised by physical parameters
- G03G9/0823—Electric parameters
-
- 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
- G03G9/083—Magnetic toner particles
-
- 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
- G03G9/087—Binders for toner particles
- G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08706—Polymers of alkenyl-aromatic compounds
-
- 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
- G03G9/087—Binders for toner particles
- G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08706—Polymers of alkenyl-aromatic compounds
- G03G9/08708—Copolymers of styrene
-
- 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
- G03G9/087—Binders for toner particles
- G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08737—Polymers derived from conjugated dienes
-
- 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
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/001—Electric or magnetic imagery, e.g., xerography, electrography, magnetography, etc. Process, composition, or product
- Y10S430/104—One component toner
-
- 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
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/001—Electric or magnetic imagery, e.g., xerography, electrography, magnetography, etc. Process, composition, or product
- Y10S430/105—Polymer in developer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
Développateur magnétique à un seul composant, caractérisé par le fait qu'il est constitué d'un liant et de 45 à 65 % en poids par rapport à la totalité du dévelopjateur, de particules fines d'une matière magnétique dispersée dans le liant, ce liant étant constitué d'un homopolymère d'un monomère vinylique aromatique et b au moins un monomère à insaturation mono-ou diéthylénique autre que le monomère vinylique autre que le monomère aromatique, et ayant une moyenne en poids du poids moléculaire de 75 000 à 150 000, et que la capacité électrostatique déterminée avec une distance des électrodes de 0,65 mm, une surface transversale des électrodes de 0,65 mm, une surface transversale des électrodes de 1,43 cm**2 et une charge des électrodes de 105 g/cm**2 est de 7,8 à 11,7 pF (picofarads), la constante diélectrique déterminée dans les mêmes conditions est de 4 à 6 et la résistance électrique déterminée dans les mêmes conditions est d'au moins 5 x 10**13 OMEGA .cm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14596678A JPS5588070A (en) | 1978-11-28 | 1978-11-28 | Developer for electrostatic image |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2443086A1 true FR2443086A1 (fr) | 1980-06-27 |
FR2443086B1 FR2443086B1 (fr) | 1984-10-26 |
Family
ID=15397116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7929229A Granted FR2443086A1 (fr) | 1978-11-28 | 1979-11-28 | Developpateur magnetique a un seul composant |
Country Status (5)
Country | Link |
---|---|
US (1) | US4311779A (fr) |
JP (1) | JPS5588070A (fr) |
DE (1) | DE2947961C2 (fr) |
FR (1) | FR2443086A1 (fr) |
GB (1) | GB2038495B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2492122A1 (fr) * | 1980-10-13 | 1982-04-16 | Ricoh Kk | Procede electrophotographique utilisant un developpeur a deux composants |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5927901B2 (ja) * | 1979-12-25 | 1984-07-09 | 京セラミタ株式会社 | 転写型一成分系磁性現像剤 |
JPS5745554A (en) * | 1980-09-02 | 1982-03-15 | Mita Ind Co Ltd | Magnetic developer |
JPS5785060A (en) * | 1980-11-17 | 1982-05-27 | Mita Ind Co Ltd | Composite developer |
US4414321A (en) * | 1980-11-27 | 1983-11-08 | Mita Industrial Co. Ltd. | Dry composite blended magnetic developer of resin encapsulated fine magnetite and resin encapsulated coarse magnetite |
DE3170891D1 (en) * | 1980-11-27 | 1985-07-11 | Mita Industrial Co Ltd | A one-component type magnetic developer |
JPS5797545A (en) * | 1980-12-10 | 1982-06-17 | Hitachi Metals Ltd | Magnetic toner for electrophotography |
JPS581156A (ja) * | 1981-06-26 | 1983-01-06 | Mita Ind Co Ltd | 磁性現像剤の製造方法 |
DE3270107D1 (en) * | 1981-08-05 | 1986-04-30 | Konishiroku Photo Ind | Toners for developing electrostatic image |
JPS58118651A (ja) * | 1982-01-07 | 1983-07-14 | Mita Ind Co Ltd | 熱定着用の乾式現像トナ− |
US4469770A (en) * | 1982-12-27 | 1984-09-04 | Xerox Corporation | Styrene butadiene plasticizer toner composition blends |
JPS6045259A (ja) * | 1983-08-22 | 1985-03-11 | Hitachi Chem Co Ltd | 静電荷像現像用トナ− |
JPS6046566A (ja) * | 1983-08-25 | 1985-03-13 | Hitachi Chem Co Ltd | 磁性トナ− |
US4585535A (en) * | 1985-03-11 | 1986-04-29 | Savin Corporation | Electrophoretic method of producing high-density magnetic recording media |
US4719026A (en) * | 1985-03-11 | 1988-01-12 | Savin Corporation | Electrophoretic method of producing high-density magnetic recording media and a composition and a suspension for practicing the same |
JPS62100773A (ja) * | 1985-10-29 | 1987-05-11 | Hitachi Metals Ltd | 熱ロ−ル定着用現像剤 |
US4636451A (en) * | 1986-02-13 | 1987-01-13 | Minnesota Mining And Manufacturing Company | Pressure-fixable toner material and method of making same |
JPH0812441B2 (ja) * | 1987-10-30 | 1996-02-07 | 株式会社東芝 | 静電荷像現像方法および装置 |
JPH0812445B2 (ja) * | 1987-10-30 | 1996-02-07 | 株式会社東芝 | 静電荷像現像方法および装置 |
JPH0812444B2 (ja) * | 1987-10-30 | 1996-02-07 | 株式会社東芝 | 静電荷像現像方法および装置 |
JPH0812442B2 (ja) * | 1987-10-30 | 1996-02-07 | 株式会社東芝 | 静電荷像現像方法および装置 |
US4837105A (en) * | 1988-02-22 | 1989-06-06 | Xerox Corporation | Imaging process with prevention of toner spots |
JPH01257968A (ja) * | 1988-04-08 | 1989-10-16 | Fuji Xerox Co Ltd | 磁性トナー |
US4965161A (en) * | 1989-05-31 | 1990-10-23 | Nashua Corporation | Non-crosslinked electrographic copolymer composition and imaging process |
US5114820A (en) * | 1989-10-27 | 1992-05-19 | Xerox Corporation | Polyalkyl styrene butadiene toner compositions |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2538112A1 (de) * | 1974-08-28 | 1976-03-18 | Konishiroku Photo Ind | Verfahren und vorrichtung zum entwickeln von latenten elektrostatischen bildern |
FR2311337A1 (fr) * | 1975-05-15 | 1976-12-10 | Kip Kk | Particules de revelateur sec pour utilisation en electrophotographie, et procede pour developper les images electrostatiques au moyen desdites particules |
DE2725963A1 (de) * | 1976-06-09 | 1977-12-15 | Konishiroku Photo Ind | Entwickler fuer latente elektrostatische bilder sowie ein verfahren zu dessen herstellung |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3239465A (en) * | 1958-05-12 | 1966-03-08 | Xerox Corp | Xerographic developer |
US3901695A (en) * | 1964-04-06 | 1975-08-26 | Addressograph Multigraph | Electrophotographic process using polyamide containing developer |
US3697268A (en) * | 1968-04-10 | 1972-10-10 | Ricoh Kk | Electrostatic printing method |
US3965022A (en) * | 1973-06-29 | 1976-06-22 | Minnesota Mining And Manufacturing Company | Pressure-fixable developing powder |
JPS5045639A (fr) * | 1973-08-27 | 1975-04-23 | ||
JPS5534421B2 (fr) * | 1974-02-16 | 1980-09-06 | ||
JPS5852586B2 (ja) * | 1974-10-25 | 1983-11-24 | 株式会社日立製作所 | 現像装置 |
JPS51126836A (en) * | 1975-04-26 | 1976-11-05 | Shigekazu Enoki | Magnetic toner |
JPS51133028A (en) * | 1975-05-15 | 1976-11-18 | K I P:Kk | Electrophotographic development method |
US4187330A (en) * | 1976-01-30 | 1980-02-05 | Hitachi Metals, Ltd. | Electrostatic developing method and apparatus using conductive magnetic toner |
JPS52113736A (en) * | 1976-03-22 | 1977-09-24 | Fuji Xerox Co Ltd | Toner for electrophotography |
JPS53103745A (en) * | 1977-02-23 | 1978-09-09 | Hitachi Metals Ltd | Magnetic toner |
JPS53137148A (en) * | 1977-05-02 | 1978-11-30 | Xerox Corp | Developing agent and method of forming image |
US4192902A (en) * | 1977-05-02 | 1980-03-11 | Xerox Corporation | In situ coating then spray drying of magnetic toner |
JPH01138442A (ja) * | 1987-11-25 | 1989-05-31 | Mitsubishi Electric Corp | 内燃機関用アルコールセンサ |
-
1978
- 1978-11-28 JP JP14596678A patent/JPS5588070A/ja active Pending
-
1979
- 1979-11-27 GB GB7940943A patent/GB2038495B/en not_active Expired
- 1979-11-28 DE DE2947961A patent/DE2947961C2/de not_active Expired - Fee Related
- 1979-11-28 FR FR7929229A patent/FR2443086A1/fr active Granted
- 1979-11-28 US US06/097,981 patent/US4311779A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2538112A1 (de) * | 1974-08-28 | 1976-03-18 | Konishiroku Photo Ind | Verfahren und vorrichtung zum entwickeln von latenten elektrostatischen bildern |
FR2311337A1 (fr) * | 1975-05-15 | 1976-12-10 | Kip Kk | Particules de revelateur sec pour utilisation en electrophotographie, et procede pour developper les images electrostatiques au moyen desdites particules |
DE2725963A1 (de) * | 1976-06-09 | 1977-12-15 | Konishiroku Photo Ind | Entwickler fuer latente elektrostatische bilder sowie ein verfahren zu dessen herstellung |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2492122A1 (fr) * | 1980-10-13 | 1982-04-16 | Ricoh Kk | Procede electrophotographique utilisant un developpeur a deux composants |
Also Published As
Publication number | Publication date |
---|---|
DE2947961C2 (de) | 1994-12-15 |
GB2038495A (en) | 1980-07-23 |
JPS5588070A (en) | 1980-07-03 |
FR2443086B1 (fr) | 1984-10-26 |
DE2947961A1 (de) | 1980-06-04 |
US4311779A (en) | 1982-01-19 |
GB2038495B (en) | 1982-11-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |