JPS54123931A - Tape cassette - Google Patents
Tape cassetteInfo
- Publication number
- JPS54123931A JPS54123931A JP3159578A JP3159578A JPS54123931A JP S54123931 A JPS54123931 A JP S54123931A JP 3159578 A JP3159578 A JP 3159578A JP 3159578 A JP3159578 A JP 3159578A JP S54123931 A JPS54123931 A JP S54123931A
- Authority
- JP
- Japan
- Prior art keywords
- component
- weight
- resin
- sheet
- particle size
- 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
Links
Abstract
PURPOSE:To improve the tape running of a tape cassette by using the liner sheet which has the slippery layer formed of the mixture of slip material, an abrasion resistance imparting agent and a specific binder. CONSTITUTION:The binder (A) composed of about 20 to 95wt% of the cellulosic resin(a) modified through esterification, etherification, nitration, etc. of a part of the hydroxyl groups contained and about 80 to 5wt% of thermoplastic polyurethance resin (b) of glass transition temperature 0 deg.C or under such as Nipporan 2304, 2320 (commercial products, made by Nippon Polyurethane), the slip material (B) of about 0.5 to 10mu in particle size such as graphite, carbon black or other and the abrasion resistance imparting agent (c) of Mohs'hardness 5 or over and about 0.05 to 5mu in particle size such as Cr2O3, SiC or other are blended at ratios of about 0.6 to 6 weight times of the component B based on the weight of the component A and about 0.002 to 0.05 weight times of the component C based on the weight of the component B, and this is coated on a resin sheet such as polyester sheet, whereby the slippery layer of about 1 to 20mu in thickness is formed to provide the liner sheet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3159578A JPS54123931A (en) | 1978-03-17 | 1978-03-17 | Tape cassette |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3159578A JPS54123931A (en) | 1978-03-17 | 1978-03-17 | Tape cassette |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54123931A true JPS54123931A (en) | 1979-09-26 |
JPS6339996B2 JPS6339996B2 (en) | 1988-08-09 |
Family
ID=12335539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3159578A Granted JPS54123931A (en) | 1978-03-17 | 1978-03-17 | Tape cassette |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54123931A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5059439A (en) * | 1973-09-27 | 1975-05-22 |
-
1978
- 1978-03-17 JP JP3159578A patent/JPS54123931A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5059439A (en) * | 1973-09-27 | 1975-05-22 |
Also Published As
Publication number | Publication date |
---|---|
JPS6339996B2 (en) | 1988-08-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20041124 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20050223 |
|
A602 | Written permission of extension of time |
Effective date: 20050411 Free format text: JAPANESE INTERMEDIATE CODE: A602 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20050913 |