JPS57207260A - Self-chargeable toner - Google Patents

Self-chargeable toner

Info

Publication number
JPS57207260A
JPS57207260A JP56093596A JP9359681A JPS57207260A JP S57207260 A JPS57207260 A JP S57207260A JP 56093596 A JP56093596 A JP 56093596A JP 9359681 A JP9359681 A JP 9359681A JP S57207260 A JPS57207260 A JP S57207260A
Authority
JP
Japan
Prior art keywords
composition
toner
polymer
self
soln
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.)
Pending
Application number
JP56093596A
Other languages
Japanese (ja)
Inventor
Wataru Shimoma
Shigeru Ryuzaki
Nobuo Sonoda
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56093596A priority Critical patent/JPS57207260A/en
Publication of JPS57207260A publication Critical patent/JPS57207260A/en
Pending legal-status Critical Current

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
    • G03G9/0827—Developers with toner particles characterised by their shape, e.g. degree of sphericity
    • 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
    • G03G9/0825—Developers with toner particles characterised by their structure; characterised by non-homogenuous distribution of components

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a toner enabling clear transfer onto white paper and requiring no carrier by forming a self-chargeable toner with a composition A and a composition B ranking differentially in an charging train so that the surface of the toner is divided into 2 parts. CONSTITUTION:A soln. of a composition A is first applied to a support in 10- 20mum dry thickness and dried, and a soln. of a composition B whose rank in an charging train is different from the rank of the composition A is similarly applied. The resulting 2-layered sheet is detached from the support and coarsely pulverized to obtain a toner. In order to make the compositions A, B mutually chargerable, for example, in order to positively charge the composition A and negatively charge the composition B, an electron donative polymer contg. nitrogen is used as the matrix polymer of A, and an electron accepting polymer such as a hydrocarbon polymer is used as the matrix polymer of B. The resulting toner is charged positively and negatively at both sides, respectively by mutual friction, and it is used as a self-chargeable toner in the development of a latent image.
JP56093596A 1981-06-16 1981-06-16 Self-chargeable toner Pending JPS57207260A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56093596A JPS57207260A (en) 1981-06-16 1981-06-16 Self-chargeable toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56093596A JPS57207260A (en) 1981-06-16 1981-06-16 Self-chargeable toner

Publications (1)

Publication Number Publication Date
JPS57207260A true JPS57207260A (en) 1982-12-18

Family

ID=14086685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56093596A Pending JPS57207260A (en) 1981-06-16 1981-06-16 Self-chargeable toner

Country Status (1)

Country Link
JP (1) JPS57207260A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6032061A (en) * 1983-08-02 1985-02-19 Mitsubishi Chem Ind Ltd Magnetic toner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5333633A (en) * 1976-09-09 1978-03-29 Matsushita Electric Ind Co Ltd Dry-type developer
JPS54101328A (en) * 1978-01-26 1979-08-09 Canon Inc Developer for electrostatic image
JPS5647048A (en) * 1979-09-26 1981-04-28 Toray Ind Inc Magnetic toner for electrostatic transfer type copying machine
JPS5657041A (en) * 1979-10-17 1981-05-19 Toray Ind Inc Magnetic toner for electrostatic transfer type copying machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5333633A (en) * 1976-09-09 1978-03-29 Matsushita Electric Ind Co Ltd Dry-type developer
JPS54101328A (en) * 1978-01-26 1979-08-09 Canon Inc Developer for electrostatic image
JPS5647048A (en) * 1979-09-26 1981-04-28 Toray Ind Inc Magnetic toner for electrostatic transfer type copying machine
JPS5657041A (en) * 1979-10-17 1981-05-19 Toray Ind Inc Magnetic toner for electrostatic transfer type copying machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6032061A (en) * 1983-08-02 1985-02-19 Mitsubishi Chem Ind Ltd Magnetic toner

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