GB1427933A - Developer powder for the development of electrostatic images - Google Patents
Developer powder for the development of electrostatic imagesInfo
- Publication number
- GB1427933A GB1427933A GB5861172A GB5861172A GB1427933A GB 1427933 A GB1427933 A GB 1427933A GB 5861172 A GB5861172 A GB 5861172A GB 5861172 A GB5861172 A GB 5861172A GB 1427933 A GB1427933 A GB 1427933A
- Authority
- GB
- United Kingdom
- Prior art keywords
- indene
- styrene
- particles
- copolymer
- acrylonitrile copolymer
- 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.)
- Expired
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
- G03G9/08735—Polymers of unsaturated cyclic compounds having no unsaturated aliphatic groups in a side-chain, e.g. coumarone-indene resins
-
- 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
- G03G9/08726—Polymers of unsaturated acids or derivatives thereof
- G03G9/08731—Polymers of nitriles
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
1427933 Developer composition OCE-VAN DER GRINTEN NV 18 Dec 1973 [19 Dec 1972] 58611/72 Heading G2H [Also in Division C3] Electrostatic image developer powders comprise coloured thermoplastic resin particles, the resin constituent of which consists of at least 50 wt per cent of a copolymer of at least 50 wt per cent of styrene with indene or an alkyl indene and optionally acrylonitrile, optionally in admixture with carrier granules, e.g. of sand, glass, quartz, metal oxides or iron. The particles may be electroscopic and may contain polarity control agents, e.g. organic dyestuffs and 2 (#-styryl) quinolinium salts of organic and inorganic acids, or the particles may be conductive, carrying on their surfaces 5 to 15 wt per cent of conductive carbon black and optionally incorporating iron or ferrite particles. Examples describe electroscopic developers comprising carbon black together with (1 and 5) styrene/indene/acrylonitrile copolymer and nigrosine, (2) styrene/indene/acrylonitrile copolymer and Crystal Violet stearate, (3) styrene/indene/ acrylonitrile copolymer and (4) styrene/indene copolymer and nigrosine, 1,2, 4 and 5 being mixed with iron granules and 3 with glass granules; and (6) a conductive developer comprising styrene/ indene/acrylonitrile copolymer particles coated with conductive carbon black.
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES421381A ES421381A1 (en) | 1972-12-19 | 1972-12-09 | Developer powder for the development of electrostatic images |
GB5861172A GB1427933A (en) | 1972-12-19 | 1972-12-19 | Developer powder for the development of electrostatic images |
AU62698/73A AU473677B2 (en) | 1972-12-19 | 1973-11-20 | Developer powder forthe development of electrostatic images |
ZA738929A ZA738929B (en) | 1972-12-19 | 1973-11-23 | Developer powder for the development of electrostatic images |
CH1693473A CH589878A5 (en) | 1972-12-19 | 1973-12-04 | |
NL7316641A NL7316641A (en) | 1972-12-19 | 1973-12-05 | |
AT1029073A AT328862B (en) | 1972-12-19 | 1973-12-10 | DEVELOPMENT POWDER |
IT70710/73A IT1000508B (en) | 1972-12-19 | 1973-12-14 | DETECTING POWDER FOR THE DEVELOPMENT OF ELECTROSTATIC IMAGES |
DE2362410A DE2362410A1 (en) | 1972-12-19 | 1973-12-15 | DEVELOPING POWDER AND ITS USE FOR THE DEVELOPMENT OF ELECTROSTATIC IMAGES |
SE7317038A SE389404B (en) | 1972-12-19 | 1973-12-17 | DEVELOPER POWDER FOR THE DEVELOPMENT OF ELECTROSTATIC IMAGES. |
JP48142298A JPS4991449A (en) | 1972-12-19 | 1973-12-18 | |
FR7345495A FR2213517B1 (en) | 1972-12-19 | 1973-12-19 | |
BE139034A BE808829A (en) | 1972-12-19 | 1973-12-19 | POWDER DEVELOPER FOR DEVELOPING ELECTROSTATIC IMAGES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5861172A GB1427933A (en) | 1972-12-19 | 1972-12-19 | Developer powder for the development of electrostatic images |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1427933A true GB1427933A (en) | 1976-03-10 |
Family
ID=10481996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5861172A Expired GB1427933A (en) | 1972-12-19 | 1972-12-19 | Developer powder for the development of electrostatic images |
Country Status (13)
Country | Link |
---|---|
JP (1) | JPS4991449A (en) |
AT (1) | AT328862B (en) |
AU (1) | AU473677B2 (en) |
BE (1) | BE808829A (en) |
CH (1) | CH589878A5 (en) |
DE (1) | DE2362410A1 (en) |
ES (1) | ES421381A1 (en) |
FR (1) | FR2213517B1 (en) |
GB (1) | GB1427933A (en) |
IT (1) | IT1000508B (en) |
NL (1) | NL7316641A (en) |
SE (1) | SE389404B (en) |
ZA (1) | ZA738929B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2821422A1 (en) * | 1977-05-17 | 1978-12-14 | Mita Industrial Co Ltd | DEVELOPER OF ELECTROSTATIC IMAGES AND PROCESS FOR THEIR PRODUCTION |
-
1972
- 1972-12-09 ES ES421381A patent/ES421381A1/en not_active Expired
- 1972-12-19 GB GB5861172A patent/GB1427933A/en not_active Expired
-
1973
- 1973-11-20 AU AU62698/73A patent/AU473677B2/en not_active Expired
- 1973-11-23 ZA ZA738929A patent/ZA738929B/en unknown
- 1973-12-04 CH CH1693473A patent/CH589878A5/xx not_active IP Right Cessation
- 1973-12-05 NL NL7316641A patent/NL7316641A/xx not_active Application Discontinuation
- 1973-12-10 AT AT1029073A patent/AT328862B/en not_active IP Right Cessation
- 1973-12-14 IT IT70710/73A patent/IT1000508B/en active
- 1973-12-15 DE DE2362410A patent/DE2362410A1/en not_active Withdrawn
- 1973-12-17 SE SE7317038A patent/SE389404B/en unknown
- 1973-12-18 JP JP48142298A patent/JPS4991449A/ja active Pending
- 1973-12-19 BE BE139034A patent/BE808829A/en unknown
- 1973-12-19 FR FR7345495A patent/FR2213517B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AT328862B (en) | 1976-04-12 |
AU6269873A (en) | 1975-05-22 |
JPS4991449A (en) | 1974-08-31 |
FR2213517B1 (en) | 1979-07-20 |
FR2213517A1 (en) | 1974-08-02 |
ES421381A1 (en) | 1976-09-01 |
IT1000508B (en) | 1976-04-10 |
ZA738929B (en) | 1974-10-30 |
NL7316641A (en) | 1974-06-21 |
BE808829A (en) | 1974-06-19 |
ATA1029073A (en) | 1975-06-15 |
AU473677B2 (en) | 1976-07-01 |
CH589878A5 (en) | 1977-07-15 |
DE2362410A1 (en) | 1974-07-11 |
SE389404B (en) | 1976-11-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |