JPS566247A - Electrostatic image developing toner - Google Patents
Electrostatic image developing tonerInfo
- Publication number
- JPS566247A JPS566247A JP8217479A JP8217479A JPS566247A JP S566247 A JPS566247 A JP S566247A JP 8217479 A JP8217479 A JP 8217479A JP 8217479 A JP8217479 A JP 8217479A JP S566247 A JPS566247 A JP S566247A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- charge
- developer
- variation
- fog
- 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
Landscapes
- Dry Development In Electrophotography (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
PURPOSE: To keep toner charge stable, to lengthen developer life, to eliminate troubles due to excessive charge, and to obtain a superior visible image free from fog, by adding a specified aromatic acid derivative.
CONSTITUTION: To a 100pts.wt. resin component of toner is added a 0.5W 10pts.wt compound represented by the formula in which R is H, halogen, nitro, cyano, carboxy, hydroxy, mercapto, or sulfo; R' is hydroxy, optionally substituted alkoxy or amino; m is 1 or 2; and n is an integer of 1W5. Addition of this compound almost eliminates variation of charge due to variation of conditions during the friction stage of the toner, and keeps the charge constant against variation of toner concentration in the developer accompanying repeated development, thus permitting the life of developer to be lengthened, fluctuation of image density to be prevented, and a superior visible image free from fog to be obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54082174A JPS5929861B2 (en) | 1979-06-28 | 1979-06-28 | Toner for developing electrostatic images |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54082174A JPS5929861B2 (en) | 1979-06-28 | 1979-06-28 | Toner for developing electrostatic images |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12748580A Division JPS56101170A (en) | 1980-09-13 | 1980-09-13 | Developing method of electrostatic charge image |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS566247A true JPS566247A (en) | 1981-01-22 |
JPS5929861B2 JPS5929861B2 (en) | 1984-07-24 |
Family
ID=13767061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54082174A Expired JPS5929861B2 (en) | 1979-06-28 | 1979-06-28 | Toner for developing electrostatic images |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5929861B2 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5677870A (en) * | 1979-11-28 | 1981-06-26 | Canon Inc | Developing method |
JPS57196264A (en) * | 1981-05-29 | 1982-12-02 | Mita Ind Co Ltd | One component type developer |
US4407924A (en) * | 1981-01-23 | 1983-10-04 | Orient Chemical Industries, Ltd. | Toner complexes for developing electrostatic images |
JPS58186752A (en) * | 1982-04-12 | 1983-10-31 | ゼロツクス・コ−ポレ−シヨン | Para-halo phenylcarbonic acid charge reinforcing additive |
JPS62145255A (en) * | 1985-12-19 | 1987-06-29 | Ricoh Co Ltd | Toner for developing electrostatic charge image |
US5332637A (en) * | 1993-08-31 | 1994-07-26 | Eastman Kodak Company | Electrostatographic dry toner and developer compositions with hydroxyphthalimide |
US5358817A (en) * | 1993-08-31 | 1994-10-25 | Eastman Kodak Company | Toner compositions containing as a negative charge-controlling agent the calcium salt of ortho-benzoic sulfimide |
US5358818A (en) * | 1993-08-31 | 1994-10-25 | Eastman Kodak Company | Ortho-benzoic sulfimide as charge-controlling agent |
US5358816A (en) * | 1993-08-31 | 1994-10-25 | Eastman Kodak Company | Zinc salt of ortho-benzoic sulfimide as negative charge-controlling additive for toner and developer compositions |
US5358814A (en) * | 1993-08-31 | 1994-10-25 | Eastman Kodak Company | Toner compositions containing as a negative charge-controlling agent a mixture of ortho-benzoic sulfimide and para-anisic acid |
US5358815A (en) * | 1993-08-31 | 1994-10-25 | Eastman Kodak Company | Toner compositions containing negative charge-controlling additive |
US7666566B2 (en) | 2004-01-06 | 2010-02-23 | Ricoh Company, Ltd. | Electrophotographic toner and method of preparing the toner |
-
1979
- 1979-06-28 JP JP54082174A patent/JPS5929861B2/en not_active Expired
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5677870A (en) * | 1979-11-28 | 1981-06-26 | Canon Inc | Developing method |
US4407924A (en) * | 1981-01-23 | 1983-10-04 | Orient Chemical Industries, Ltd. | Toner complexes for developing electrostatic images |
JPH0119579B2 (en) * | 1981-05-29 | 1989-04-12 | Mita Industrial Co Ltd | |
JPS57196264A (en) * | 1981-05-29 | 1982-12-02 | Mita Ind Co Ltd | One component type developer |
JPH0360429B2 (en) * | 1982-04-12 | 1991-09-13 | Xerox Corp | |
JPS58186752A (en) * | 1982-04-12 | 1983-10-31 | ゼロツクス・コ−ポレ−シヨン | Para-halo phenylcarbonic acid charge reinforcing additive |
JPS62145255A (en) * | 1985-12-19 | 1987-06-29 | Ricoh Co Ltd | Toner for developing electrostatic charge image |
US5332637A (en) * | 1993-08-31 | 1994-07-26 | Eastman Kodak Company | Electrostatographic dry toner and developer compositions with hydroxyphthalimide |
US5358817A (en) * | 1993-08-31 | 1994-10-25 | Eastman Kodak Company | Toner compositions containing as a negative charge-controlling agent the calcium salt of ortho-benzoic sulfimide |
US5358818A (en) * | 1993-08-31 | 1994-10-25 | Eastman Kodak Company | Ortho-benzoic sulfimide as charge-controlling agent |
US5358816A (en) * | 1993-08-31 | 1994-10-25 | Eastman Kodak Company | Zinc salt of ortho-benzoic sulfimide as negative charge-controlling additive for toner and developer compositions |
US5358814A (en) * | 1993-08-31 | 1994-10-25 | Eastman Kodak Company | Toner compositions containing as a negative charge-controlling agent a mixture of ortho-benzoic sulfimide and para-anisic acid |
US5358815A (en) * | 1993-08-31 | 1994-10-25 | Eastman Kodak Company | Toner compositions containing negative charge-controlling additive |
US7666566B2 (en) | 2004-01-06 | 2010-02-23 | Ricoh Company, Ltd. | Electrophotographic toner and method of preparing the toner |
Also Published As
Publication number | Publication date |
---|---|
JPS5929861B2 (en) | 1984-07-24 |
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