JPS57205838A - Electrically conductive disk type recording carrier - Google Patents
Electrically conductive disk type recording carrierInfo
- Publication number
- JPS57205838A JPS57205838A JP8907181A JP8907181A JPS57205838A JP S57205838 A JPS57205838 A JP S57205838A JP 8907181 A JP8907181 A JP 8907181A JP 8907181 A JP8907181 A JP 8907181A JP S57205838 A JPS57205838 A JP S57205838A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- recording carrier
- workability
- desirable
- carbon black
- 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
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/06—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electrical capacitance; Record carriers therefor
- G11B9/061—Record carriers characterised by their structure or form or by the selection of the material; Apparatus or processes specially adapted for the manufacture of record carriers
- G11B9/063—Record carriers characterised by their structure or form or by the selection of the material; Apparatus or processes specially adapted for the manufacture of record carriers characterised by the selection of the material
- G11B9/068—Moulding resin compositions
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
PURPOSE:To obtain a recording carrier which is excellent in its workability and mass productivity by constituting so that a disk composition consisting of vinyl chloride resin and carbon black contains specific weight % of low molecular weight polyolefin wax containing a calboxyl radical. CONSTITUTION:An electrically conductive disk type recording carrier which is molded a disk composition consisting of vinyl chloride resin and carbon black is made to contain 0.2-1.5wt% low molecular weight polyolefin wax containing a calboxyl radical, as an internal lubricant. As for a vinyl chloride resin component, a vinyl chloride homopolymer, a copolymer of vinyl chloride and vinyl acetate, and a copolymer of vinyl chloride and ethylene, etc. are available singly or by use of 2 kind or more together, and that which has about 400-500 molecular weight is desirable from the viewpoint of workability and the thermal characteristic side. As for carbon black particles, those which are excellent in its conductivity and ispersion property are desirable, and it is desirable that 10-30wt.pts. are added to 100wt.pts. disk composition. In this way, a product which is excellent in its workability and mass productivity is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8907181A JPS57205838A (en) | 1981-06-10 | 1981-06-10 | Electrically conductive disk type recording carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8907181A JPS57205838A (en) | 1981-06-10 | 1981-06-10 | Electrically conductive disk type recording carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57205838A true JPS57205838A (en) | 1982-12-17 |
Family
ID=13960614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8907181A Pending JPS57205838A (en) | 1981-06-10 | 1981-06-10 | Electrically conductive disk type recording carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57205838A (en) |
-
1981
- 1981-06-10 JP JP8907181A patent/JPS57205838A/en active Pending
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