JPS5532013A - Liquid developer for electrostatic photography - Google Patents

Liquid developer for electrostatic photography

Info

Publication number
JPS5532013A
JPS5532013A JP10384678A JP10384678A JPS5532013A JP S5532013 A JPS5532013 A JP S5532013A JP 10384678 A JP10384678 A JP 10384678A JP 10384678 A JP10384678 A JP 10384678A JP S5532013 A JPS5532013 A JP S5532013A
Authority
JP
Japan
Prior art keywords
resin
concentrated toner
solvent
dissolve
abovementioned
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
JP10384678A
Other languages
Japanese (ja)
Other versions
JPS5614980B2 (en
Inventor
Motoo Tasaka
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP10384678A priority Critical patent/JPS5532013A/en
Publication of JPS5532013A publication Critical patent/JPS5532013A/en
Publication of JPS5614980B2 publication Critical patent/JPS5614980B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Liquid Developers In Electrophotography (AREA)

Abstract

PURPOSE: To considerably reduce the degradation of the developer caused through repeated addition of concentrated toner by beforehand adding the specific resins in the developer.
CONSTITUTION: The monomer A which can dissolve the resin A that is hard to dissolve or insoluble to an aqueous solvent of high insulation characteristic and low dielectric constant, e.g., ester gum, e.g., 2-ethyl hexyl methacrylate is polymerized in said solvent in the presence of the resin A, whereby the resin dispersion is obtained. On the other hand, coloring agents such as carbon black and ordinary resin B are kneaded or melted and ground in the (absence) presence of the abovementioned nonaqueous solvent, whereby the concentrated toner is obtained. Next, the mixture of this concentrated toner and the abovementioned resin dispersion is diluted with the carrier solution of high insulation characteristic and low dielectric constant.
COPYRIGHT: (C)1980,JPO&Japio
JP10384678A 1978-08-28 1978-08-28 Liquid developer for electrostatic photography Granted JPS5532013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10384678A JPS5532013A (en) 1978-08-28 1978-08-28 Liquid developer for electrostatic photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10384678A JPS5532013A (en) 1978-08-28 1978-08-28 Liquid developer for electrostatic photography

Publications (2)

Publication Number Publication Date
JPS5532013A true JPS5532013A (en) 1980-03-06
JPS5614980B2 JPS5614980B2 (en) 1981-04-07

Family

ID=14364791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10384678A Granted JPS5532013A (en) 1978-08-28 1978-08-28 Liquid developer for electrostatic photography

Country Status (1)

Country Link
JP (1) JPS5532013A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015145953A (en) * 2014-02-03 2015-08-13 コニカミノルタ株式会社 liquid developer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48101137A (en) * 1972-04-03 1973-12-20
JPS5277731A (en) * 1975-12-24 1977-06-30 Ricoh Co Ltd Liquid developer for electrostatic photography
JPS5369635A (en) * 1976-12-02 1978-06-21 Ricoh Co Ltd Liquid developing agent for use in static photography

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48101137A (en) * 1972-04-03 1973-12-20
JPS5277731A (en) * 1975-12-24 1977-06-30 Ricoh Co Ltd Liquid developer for electrostatic photography
JPS5369635A (en) * 1976-12-02 1978-06-21 Ricoh Co Ltd Liquid developing agent for use in static photography

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015145953A (en) * 2014-02-03 2015-08-13 コニカミノルタ株式会社 liquid developer

Also Published As

Publication number Publication date
JPS5614980B2 (en) 1981-04-07

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