JPS6178684U - - Google Patents

Info

Publication number
JPS6178684U
JPS6178684U JP16473284U JP16473284U JPS6178684U JP S6178684 U JPS6178684 U JP S6178684U JP 16473284 U JP16473284 U JP 16473284U JP 16473284 U JP16473284 U JP 16473284U JP S6178684 U JPS6178684 U JP S6178684U
Authority
JP
Japan
Prior art keywords
pencil lead
firing
ridges
porosity
utility
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
JP16473284U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP16473284U priority Critical patent/JPS6178684U/ja
Publication of JPS6178684U publication Critical patent/JPS6178684U/ja
Pending legal-status Critical Current

Links

Landscapes

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

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の鉛筆芯の一実施例を示す横断
面図である。 １…鉛筆芯、２…突条。 FIG. 1 is a cross-sectional view showing an embodiment of the pencil lead of the present invention. 1...Pencil lead, 2...Protrusion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 有機結合材を使用し、焼成してなる鉛筆芯であ
つて、偏平な横断面を有し、その表面は焼成時の
収縮に伴う長手方向の突条を有し、前記突条の最
大高さは２０μｍであり、また、気孔率が２０％
〜５０％の範囲にあることを特徴とする鉛筆芯。 A pencil lead made by firing an organic binder and having a flat cross section, the surface of which has longitudinal ridges due to shrinkage during firing, and the maximum height of the ridges. is 20 μm, and the porosity is 20%
A pencil lead characterized by being in the range of ~50%.
JP16473284U 1984-10-31 1984-10-31 Pending JPS6178684U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16473284U JPS6178684U (en) 1984-10-31 1984-10-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16473284U JPS6178684U (en) 1984-10-31 1984-10-31

Publications (1)

Publication Number Publication Date
JPS6178684U true JPS6178684U (en) 1986-05-26

Family

ID=30722596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16473284U Pending JPS6178684U (en) 1984-10-31 1984-10-31

Country Status (1)

Country Link
JP (1) JPS6178684U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015221869A (en) * 2014-05-23 2015-12-10 三菱鉛筆株式会社 Spare lead type holder pencil lead

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015221869A (en) * 2014-05-23 2015-12-10 三菱鉛筆株式会社 Spare lead type holder pencil lead

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