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JPS56120777A - Ink composition for ball point pen - Google Patents

Ink composition for ball point pen

Info

Publication number
JPS56120777A
JPS56120777A JP2436280A JP2436280A JPS56120777A JP S56120777 A JPS56120777 A JP S56120777A JP 2436280 A JP2436280 A JP 2436280A JP 2436280 A JP2436280 A JP 2436280A JP S56120777 A JPS56120777 A JP S56120777A
Authority
JP
Japan
Prior art keywords
point pen
ball point
colorant
solvent
ink
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
JP2436280A
Other languages
Japanese (ja)
Inventor
Nobuyuki Murakami
Hiroshi Miyashita
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.)
Pentel Co Ltd
Original Assignee
Pentel 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 Pentel Co Ltd filed Critical Pentel Co Ltd
Priority to JP2436280A priority Critical patent/JPS56120777A/en
Priority to PCT/JP1980/000318 priority patent/WO1981001858A1/en
Priority to EP19810900078 priority patent/EP0042438B1/en
Priority to DE8181900078T priority patent/DE3066066D1/en
Publication of JPS56120777A publication Critical patent/JPS56120777A/en
Pending legal-status Critical Current

Links

Landscapes

  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

PURPOSE: The titled composition, having improved ink extrudability even with a minimum amount of a solvent for improving the trace drying property, and prepare by adding earthy graphite to an ink for a ball point pen consisting of a colorant, e.g. a dye, a high polymer and a solvent.
CONSTITUTION: A composition prepared by adding preferably 1W15wt% earthy graphite to an ink for a ball point pen consisting of a colorant, e.g. a dye or pigment, a high polymer, e.g. ketone resin, and a solvent for the high polymer, e.g. benzyl alcohol. In the case of the dye used as the colorant, the earthy graphite is added to a dissolved ink and mixed and dispersed by a three-roll mill. In the case of the pigment used as the colorant, the pigment and the earthy graphite are kneaded with the high polymer and dispersed and then dissolved in the solvent.
USE: An open type ball point pen of ordinary pressure and a closed ball point pen of high pressure structure.
COPYRIGHT: (C)1981,JPO&Japio
JP2436280A 1979-12-26 1980-02-28 Ink composition for ball point pen Pending JPS56120777A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2436280A JPS56120777A (en) 1980-02-28 1980-02-28 Ink composition for ball point pen
PCT/JP1980/000318 WO1981001858A1 (en) 1979-12-26 1980-12-22 Erasable ball-point pen ink composition
EP19810900078 EP0042438B1 (en) 1979-12-26 1980-12-22 Erasable ball-point pen ink composition
DE8181900078T DE3066066D1 (en) 1979-12-26 1980-12-22 Erasable ball-point pen ink composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2436280A JPS56120777A (en) 1980-02-28 1980-02-28 Ink composition for ball point pen

Publications (1)

Publication Number Publication Date
JPS56120777A true JPS56120777A (en) 1981-09-22

Family

ID=12136078

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2436280A Pending JPS56120777A (en) 1979-12-26 1980-02-28 Ink composition for ball point pen

Country Status (1)

Country Link
JP (1) JPS56120777A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01275678A (en) * 1988-04-27 1989-11-06 Pentel Kk Ink composition for ball point pen
US6599353B2 (en) 2000-04-20 2003-07-29 Berol Corporation Shear-thinning writing compositions, writing instruments, and methods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01275678A (en) * 1988-04-27 1989-11-06 Pentel Kk Ink composition for ball point pen
US6599353B2 (en) 2000-04-20 2003-07-29 Berol Corporation Shear-thinning writing compositions, writing instruments, and methods

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