JPS6478433A - Manufacture of magnetic recording medium - Google Patents
Manufacture of magnetic recording mediumInfo
- Publication number
- JPS6478433A JPS6478433A JP23568787A JP23568787A JPS6478433A JP S6478433 A JPS6478433 A JP S6478433A JP 23568787 A JP23568787 A JP 23568787A JP 23568787 A JP23568787 A JP 23568787A JP S6478433 A JPS6478433 A JP S6478433A
- Authority
- JP
- Japan
- Prior art keywords
- edge part
- laser beam
- magnetic layer
- magnetic
- recording medium
- 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
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To remove and shape residual crack and to prevent drop out and the deterioration of an output by irradiating the obtained edge part of a magnetic recording medium, which has been cut in a prescribed shape by means of a cutting device such as a cutter, with a laser beam and shaping the edge part. CONSTITUTION:The laser beam 10 radiated from a laser oscillator 9 irradiates the edge part 16 of the magnetic recording medium (magnetic tape) 1 which travels in the direction of an arrow A at a considerable speed and which has been cut in a prescribed width by the cutter. When the convergent light 14 of the laser beam in an appropriate strength is radiated, only a magnetic layer having an absorption coefficient compared to a base body is heated and a temperature increases to several hundreds several thousand degrees, whereby the edge part of the magnetic layer is instantaneously liquefied, vaporized or is made into plasma and removed in the laser beam irradiation spot 17 of the edge part 16 in the magnetic tape 1 traveling the lower part of a working head 15. Thus, the residual crack of the magnetic layer and the like in the tape edge part 16 is removed and the break and peel damage of the magnetic layer 3 and the like due to a slidable travel with an adjusting member can be prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23568787A JPS6478433A (en) | 1987-09-19 | 1987-09-19 | Manufacture of magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23568787A JPS6478433A (en) | 1987-09-19 | 1987-09-19 | Manufacture of magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6478433A true JPS6478433A (en) | 1989-03-23 |
Family
ID=16989727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23568787A Pending JPS6478433A (en) | 1987-09-19 | 1987-09-19 | Manufacture of magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6478433A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6661610B1 (en) * | 1999-05-28 | 2003-12-09 | Fuji Photo Film Co., Ltd. | Evaluation reference tape |
| US11391715B2 (en) | 2014-02-05 | 2022-07-19 | Roche Diabetes Care, Inc. | Rare metals as components of coatings in diagnostic test elements and methods of determining an amount/quality of dried compositions in such coatings |
-
1987
- 1987-09-19 JP JP23568787A patent/JPS6478433A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6661610B1 (en) * | 1999-05-28 | 2003-12-09 | Fuji Photo Film Co., Ltd. | Evaluation reference tape |
| US6914254B2 (en) | 1999-05-28 | 2005-07-05 | Fuji Photo Film Co., Ltd. | Apparatus for manufacturing evaluation reference tape |
| US11391715B2 (en) | 2014-02-05 | 2022-07-19 | Roche Diabetes Care, Inc. | Rare metals as components of coatings in diagnostic test elements and methods of determining an amount/quality of dried compositions in such coatings |
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