WO1994023344A1 - Composition and use - Google Patents
Composition and use Download PDFInfo
- Publication number
- WO1994023344A1 WO1994023344A1 PCT/GB1994/000654 GB9400654W WO9423344A1 WO 1994023344 A1 WO1994023344 A1 WO 1994023344A1 GB 9400654 W GB9400654 W GB 9400654W WO 9423344 A1 WO9423344 A1 WO 9423344A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- composition
- cca
- hydroxy
- resin
- toner
- Prior art date
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
- G03G9/097—Plasticisers; Charge controlling agents
-
- 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
- G03G9/097—Plasticisers; Charge controlling agents
- G03G9/09783—Organo-metallic compounds
Definitions
- the present invention relates to the use of di- or trivalent metal salts of a naphthalene oxy-carboxylic acid compound containing a hydroxy group and a carboxylic acid group attached to adjacent carbon atoms of an aromatic ring as a negative charging charge control agent and to compositions containing such a salt.
- EP 162,632 discloses toner compositions containing 2:1 cobalt complexes of simple azo chromophores and more recently US 5,143,809 discloses polyester resin toner compositions containing an anionic 2:1 zinc complex of an aromatic oxy-carboxylic acid compound. None .of these compounds are entirely satisfactory as CCA's.
- Those disclosed in EP 162,632 are coloured molecules which limits their use and as with those disclosed in US 5,143,809 they are charged molecules which can interfere with their formulation in toner compositions or toner-resin compositions.
- a toner resin composition comprising a toner resin and a negative charging CCA which is a di- or trivalent metal salt of a naphthalene oxy-carboxylic acid wherein the hydroxy group and the carboxylic acid group are attached to adjacent carbon atoms of an aromatic ring.
- the salt has a formula I.
- X is optionally substituted C- L .-.-alkyl which may be linear or branched, alkenyl, hydroxy, halogen, nitrile, nitro, amino, substituted amino, aryl, alkaryl, aralkyl, acyl, acyloxy, alkoxy, alkoxy carbonyl, alkyl or aryl sulphonyl, carbonamide or sulphonamide; p is 0 to 6;
- M is a divalent or trivalent metal cation; and n is 2 or 3.
- the group X is selected to enhance the compatibility of the salt in the toner resin.
- X is alkyl
- it is preferably methyl, ethyl, isopropyl, t.butyl, amyl, hexyl, nonyl, decyl or dodecyl.
- X is halogen, it is preferably fluorine, bromine and especially chlorine.
- X is substituted amino, it is preferably C- ⁇ -alkylamino such as diethylamino, dibutylamino, hexylamino and 2-ethylhexylamino.
- X is aryl or aralkyl it is preferably phenyl, benzyl or ethylphenyl.
- X is acyl, acyloxy, alkoxy or alkoxycarbonyl it preferably contains a C x . l2 -alkyl moiety.
- p is 0,1 or 2, and especially 0.
- X is preferably alkyl, and it is also preferred that X is located in the 5 and/or 7 position of the naphthalene ring.
- naphthalene oxy-carboxylic acids examples include 2-hydroxy-3-naphthoic acid, 2-hydroxy-1-naphthoic acid, 8-hydroxy-l- naphthoic acid, l-hydroxy-2-naphthoic acid and derivatives thereof such as 5,7-ditertiarybutyl-3-hydroxy-2-naphoic acid.
- the metal is preferably one from groups 2a, lb or 2b of the Periodic Table by Mendeleef as published for example in the Handbook of Chemistry and Physics, published by The Chemical Rubber Company.
- M is a trivalent metal cation
- the metal is preferably one from either group 8 or group 3a of the Periodic Table.
- the metal is divalent it is preferably calcium or magnesium and especially zinc.
- the metal is trivalent it is preferably iron or aluminium.
- the toner resin is a thermoplastic resin suitable for use in the preparation of toner compositions.
- a preferred toner resin is a styrene or substituted styrene polymer or copolymer such as polystyrene or styrene-butadiene copolymer.
- the toner resin is a styrene-acrylic copolymer such as a styrene-butyl methacrylate copolymer.
- suitable toner resins are polyesters, especially alkoxylated bis-phenol based polyester resins such as those described in US 5,143,809, polyvinyl acetate, polyalkenes, poly(vinyl chloride), polyurethanes, polyamides, silicones, epoxy resins and phenolic resins. Further examples of these and other resins are given in the book "Electrophotography” by R M Schafert (Focal Press); UK 2,090,008, US 4,206,064 and US 4,407,924.
- the toner resin composition may contain more than one CCA of formula I.
- the CCA is present in the composition from 0.1 to 12%, preferably from 0.5 to 10% and especially from 1 to 3% by weight of the total composition.
- the toner resin composition may also contain a dyestuff or pigment as colourant.
- a toner resin composition as hereinbefore defined which further comprises a colourant.
- the colourant is preferably a pigment such as carbon black, metallised phthalo- cyanines, quinacridones, pe ' rylenes, benzidines, nigrosines, anilines, quinolines, anthraquinones, metallised lakes and pigment toners and water insoluble salts of basic dyes.
- the colourant may also be a water soluble basic dye, especially a triphenylmethane dyestuff.
- the toner composition may contain up to 20% colourant and especially from 3 to 10% relative to the total weight of the toner resin composition.
- the toner resin composition may be prepared by any method known to the art which typically involves mixing the toner resin with the CCA of formula I and optionally the colourant by kneading in a ball mill above the melting point of the resin. Generally, this involves mixing the molten composition for several hours at temperatures from 120 to 200°C, in order to uniformly distribute the CCA and colourant (if present) throughout the toner resin. The toner resin is then cooled, crushed and micronised until the mean diameter of the particles is preferably below 20 ⁇ and, for high resolution electro-reprography, more preferably from 1 to lO ⁇ .
- the powdered colour toner or toner-resin so obtained may be used directly or may be diluted with an inert solid diluent such as fine silica by mixing for example in a suitable blending machine.
- the CCA's of formula I are prepared by any method known in the art and are conveniently made by dispersing the oxy-carboxylic acid in water and/or a hydrophilic solvent and then adding an aqueous solution of an alkali metal hydroxide in substantially stoichiometric amounts to dissolve the oxy-carboxylic acid. Stoichiometric amounts of a water soluble salt of the metal are then added and the reaction mix stirred until the reaction is complete and the metal salt of the carboxylic acid separates and is collected by normal methods known to the art, such as by filtration and washing.
- the formation of the alkali metal salt of the oxy-carboxylic acid and its salt with the metal M is normally effected at temperatures below 60°C, and preferably at temperature from 20 to 25°C. Mixtures of different metals may be used as the water soluble salt, but it is preferred to use single metals. Similarly, different oxy-carboxylic acids may be used simultaneously which results in CCA's having different substituents in the naphthalene ring in the CCA of formula I. It is preferred however, that only a single oxy-carboxylic acid is used.
- the CCA of formula I is particularly well suited for use in electro-reprographic imaging processes on account of ease of dispersability in the resin, stability to processing and high charge capacity.
- the zinc and aluminium salts are especially useful since they are colourless and therefore can be used with a wide range of colourants for producing different coloured toner-resin compositions.
- 3-hydroxy-2-napthoic acid (27.3 parts) was stirred at room temperature in 145 cm 3 M sodium hydroxide solution plus 50 cm 3 water until the bulk of the acid had dissolved.
- the product was found to contain C 55.6% wt; H 3.9% wt; and Zn 13.5% wt.
- 3-hydroxy-2-napthoic acid (376 parts) was added to about 1.5 dm 3 of water, which was maintained at a temperature of 50°C in a 5 dm 3 beaker. The mixture was stirred and a solution of 80 parts (2 moles) of sodium hydroxide in one dm 3 of water was added in a thin stream giving a colour change from yellow to dark brown.
- Zinc chloride (3.83 parts) was dissolved in 20 cm 3 of water and the solution was added to the dark brown solution. A precipitate was formed and was stirred for 30 minutes. The mixture was cooled and filtered. The precipitate was washed thoroughly with water to remove chloride ion. The solid was dried to constant weight in an oven at 50°C.
- l-hydroxy-2-napthoic acid 47 parts was stirred with 150 cm 3 of water at 50°C. A solution of lOg of sodium hydroxide in 100 cm 3 of water was added and a dark brown solution was formed.
- Zinc chloride 17.05 parts in 25 cm 3 of water were added to the dark brown solution. A precipitate formed. The mixture was stirred for 30 minutes, cooled and filtered. The precipitate was thoroughly washed with water to remove chloride ion and was dried in an oven at 50°C.
- a toner-resin was prepared by kneading at 150°C for 30 minutes in a mixture of a styrene-acrylic resin (920 parts,- HIMER TB1000) and CCA 1 (0.5 parts) . The resin was then cooled and pulverised to give an average particle size of 10 to 12 ⁇ .
- the toner-resin from Example 1 was converted into a toner composition by kneading 93 parts of the resin with carbon black (7 parts; ELFTEX 415) at 160°C for 3 hours. After cooling, the composition was ground and pulverised until the mean particals size of the composition was below lO ⁇ .
- the toner-resin composition obtained is hereinafter referred to as TRC 1.
- a developer was prepared by mixing TRC 1 (10 parts) as described in Example 2 with ferrite iron particles (90 parts) having an average particle size of 40 ⁇ .
- the developer was found to have an initial triboelectric charge of -16 ⁇ C.gm "1 as determined by the standard 'Blow Off method described by Schein (J. App Physics, 4_ (1975) p5140 using a Toshiba TB 200 "Blow Off” machine.
- Acrylic resin 300 parts; Almacryl B-1500 resin ex Image Polymers Europe, Waalwijk, Netherlands
- a metal bonate 7.5 parts
- the ground toner-resin from Example 4 (0.4 parts) was mixed with an uncoated iron powder carrier (19.6 parts, RAV-270 ex Powder Technology, USA) in an aluminium tin on a roller mill for 1 hour.
- the developer so obtained was evaluated on a Toshiba TB 200 "Blow off” machine and the tribocharge was measured after 2, 10, 20 and 30 minutes.
- Table 1 show that the CCA developer obtained from iron (III) and aluminium attains a higher charge than that of the zinc and calcium bonate.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94912005A EP0698234A1 (en) | 1993-03-29 | 1994-03-29 | Composition and use |
JP6521816A JPH08508349A (en) | 1993-03-29 | 1994-03-29 | Composition and use |
KR1019950704201A KR960702122A (en) | 1993-03-29 | 1994-03-29 | COMPOSITION AND USE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9306456.6 | 1993-03-29 | ||
GB939306456A GB9306456D0 (en) | 1993-03-29 | 1993-03-29 | Composition and use |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994023344A1 true WO1994023344A1 (en) | 1994-10-13 |
Family
ID=10732911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1994/000654 WO1994023344A1 (en) | 1993-03-29 | 1994-03-29 | Composition and use |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0698234A1 (en) |
JP (1) | JPH08508349A (en) |
KR (1) | KR960702122A (en) |
CA (1) | CA2156254A1 (en) |
GB (1) | GB9306456D0 (en) |
WO (1) | WO1994023344A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1462440A1 (en) * | 2001-12-13 | 2004-09-29 | Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo | Naphthol derivative and charge control agent comprising the same |
KR100867145B1 (en) | 2005-03-08 | 2008-11-06 | 주식회사 엘지화학 | Polymerized Toner Having High Chargability and Good Charge Stability and the preparation method thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0227874A1 (en) * | 1984-09-12 | 1987-07-08 | Orient Chemical Industries, Ltd. | Toner for developing electrostatic latent images |
EP0280272A2 (en) * | 1987-02-25 | 1988-08-31 | Orient Chemical Industries, Ltd. | A toner for developing electrostatic latent images and a method of preparing the toner |
US5143809A (en) * | 1989-12-15 | 1992-09-01 | Konica Corporation | Color toner |
-
1993
- 1993-03-29 GB GB939306456A patent/GB9306456D0/en active Pending
-
1994
- 1994-03-29 EP EP94912005A patent/EP0698234A1/en not_active Ceased
- 1994-03-29 JP JP6521816A patent/JPH08508349A/en active Pending
- 1994-03-29 WO PCT/GB1994/000654 patent/WO1994023344A1/en not_active Application Discontinuation
- 1994-03-29 CA CA002156254A patent/CA2156254A1/en not_active Abandoned
- 1994-03-29 KR KR1019950704201A patent/KR960702122A/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0227874A1 (en) * | 1984-09-12 | 1987-07-08 | Orient Chemical Industries, Ltd. | Toner for developing electrostatic latent images |
EP0280272A2 (en) * | 1987-02-25 | 1988-08-31 | Orient Chemical Industries, Ltd. | A toner for developing electrostatic latent images and a method of preparing the toner |
US5143809A (en) * | 1989-12-15 | 1992-09-01 | Konica Corporation | Color toner |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1462440A1 (en) * | 2001-12-13 | 2004-09-29 | Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo | Naphthol derivative and charge control agent comprising the same |
EP1462440A4 (en) * | 2001-12-13 | 2006-05-31 | Ueno Seiyaku Oyo Kenkyujo Kk | Naphthol derivative and charge control agent comprising the same |
US7449608B2 (en) | 2001-12-13 | 2008-11-11 | Ueno Fine Chemicals Industry, Ltd. | Naphthol derivative and charge control agent comprising the same |
KR100867145B1 (en) | 2005-03-08 | 2008-11-06 | 주식회사 엘지화학 | Polymerized Toner Having High Chargability and Good Charge Stability and the preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
JPH08508349A (en) | 1996-09-03 |
CA2156254A1 (en) | 1994-10-13 |
EP0698234A1 (en) | 1996-02-28 |
KR960702122A (en) | 1996-03-28 |
GB9306456D0 (en) | 1993-05-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0280272B1 (en) | A toner for developing electrostatic latent images and a method of preparing the toner | |
US4404271A (en) | Metal complexes for use in developers for electrostatic images, charge control function | |
JP2009057375A (en) | Zirconium compound and charge control agent containing the compound and method for producing the compound | |
US7094513B2 (en) | Charge control agent and toner for electrostatic image development | |
JPH0774921B2 (en) | Toner composition having charge control agent | |
EP0284000B1 (en) | Quaternary ammonium salt and electrophotographic toner | |
WO1994023344A1 (en) | Composition and use | |
JPH0154A (en) | Compound and electrophotographic toner using the compound | |
US8445651B2 (en) | Method for producing charge control agent and toner | |
US8076465B2 (en) | Method for manufacturing charge control agent | |
WO1994003841A1 (en) | Charge-control agent composition and toner containing this composition | |
CA1335161C (en) | Positively chargeable toner | |
JPH07117776B2 (en) | Positively charged toner | |
US5925487A (en) | Composition, compound and use | |
EP0767934A1 (en) | Composition and use | |
EP0298388B1 (en) | A toner for developing electrostatic latent images and a method of preparing the toner | |
JPH0797530A (en) | Production of metal complex dye and toner containing the same dye for electrophotography | |
JPH05107814A (en) | Charge donating agent | |
JP2788935B2 (en) | Positively chargeable toner | |
KR900008783B1 (en) | Production method of toner | |
KR101200398B1 (en) | The electrification control material for a toner containing polynuclear metallic complex and the producing method thereof | |
JPH036573A (en) | Toner for developing electrostatic charge image | |
JP2001005230A (en) | Charge control agent for electrostatic charge image developing toner | |
JPS61255355A (en) | Toner for developing electrostatic charge image and its production | |
JPH0325450A (en) | Negative chargeable toner |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA JP KR US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1994912005 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2156254 Country of ref document: CA |
|
ENP | Entry into the national phase |
Ref document number: 1995 525727 Country of ref document: US Date of ref document: 19950925 Kind code of ref document: A |
|
WWP | Wipo information: published in national office |
Ref document number: 1994912005 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 1997 890530 Country of ref document: US Date of ref document: 19970709 Kind code of ref document: A |
|
WWR | Wipo information: refused in national office |
Ref document number: 1994912005 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1994912005 Country of ref document: EP |