JPS566247A - Electrostatic image developing toner - Google Patents

Electrostatic image developing toner

Info

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
Application number
JP8217479A
Other languages
Japanese (ja)
Other versions
JPS5929861B2 (en
Inventor
Shigeru Uetake
Kazuharu Takahashi
Tsuneo Daidouji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP54082174A priority Critical patent/JPS5929861B2/en
Publication of JPS566247A publication Critical patent/JPS566247A/en
Publication of JPS5929861B2 publication Critical patent/JPS5929861B2/en
Expired legal-status Critical Current

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
JP54082174A 1979-06-28 1979-06-28 Toner for developing electrostatic images Expired JPS5929861B2 (en)

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)

* Cited by examiner, † Cited by third party
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 images
US5332637A (en) * 1993-08-31 1994-07-26 Eastman Kodak Company Electrostatographic dry toner and developer compositions with hydroxyphthalimide
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
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
US5358818A (en) * 1993-08-31 1994-10-25 Eastman Kodak Company Ortho-benzoic sulfimide as charge-controlling agent
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
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

Cited By (12)

* Cited by examiner, † Cited by third party
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
JPS57196264A (en) * 1981-05-29 1982-12-02 Mita Ind Co Ltd One component type developer
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 images
US5332637A (en) * 1993-08-31 1994-07-26 Eastman Kodak Company Electrostatographic dry toner and developer compositions with hydroxyphthalimide
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
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
US5358818A (en) * 1993-08-31 1994-10-25 Eastman Kodak Company Ortho-benzoic sulfimide as charge-controlling agent
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
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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