JPS554788A - Processing method of rotary head drum - Google Patents

Processing method of rotary head drum

Info

Publication number
JPS554788A
JPS554788A JP4931579A JP4931579A JPS554788A JP S554788 A JPS554788 A JP S554788A JP 4931579 A JP4931579 A JP 4931579A JP 4931579 A JP4931579 A JP 4931579A JP S554788 A JPS554788 A JP S554788A
Authority
JP
Japan
Prior art keywords
face
tape
regulation
concave groove
bite
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
Application number
JP4931579A
Other languages
Japanese (ja)
Other versions
JPS5713054B2 (en
Inventor
Kenichi Hosoi
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP4931579A priority Critical patent/JPS554788A/en
Publication of JPS554788A publication Critical patent/JPS554788A/en
Publication of JPS5713054B2 publication Critical patent/JPS5713054B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE: To simplify the processing to make it possible to remove completely the float of a tape for VTR by providing a specific concave groove in the first regulation face side at the intersection part between the first and the second regulation faces which regulate the tape.
CONSTITUTION: The spiral tape guide part 15 is formed within a range of approximately 180° on the circumference face of the lower drum 13 which constitutes a rotary head drum together with the upper drum. The guide part 15 is obtained by forming the cylindrical first regulation face 18, which regulates the face of the tape 17, and the second regulation face 19, which regulates the edge of the tape 17 and is inclined vertically and spirally to the face 18, into one body by the bite processing. The concave groove 21 is formed in the face 18 side at the intersection part 20 of the faces 18 and 19, and the intersection part 20 and R generated there are put back from the face 18 by the step difference d components, so that the edge of the tape 17 can be prevented from being brought into contact with the R part. However, the concave groove 21 part b is processed by a sharp-tip bite different from the bite which processed the face 18 part a, so that the step difference d is small.
COPYRIGHT: (C)1980,JPO&Japio
JP4931579A 1979-04-20 1979-04-20 Processing method of rotary head drum Granted JPS554788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4931579A JPS554788A (en) 1979-04-20 1979-04-20 Processing method of rotary head drum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4931579A JPS554788A (en) 1979-04-20 1979-04-20 Processing method of rotary head drum

Publications (2)

Publication Number Publication Date
JPS554788A true JPS554788A (en) 1980-01-14
JPS5713054B2 JPS5713054B2 (en) 1982-03-15

Family

ID=12827520

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4931579A Granted JPS554788A (en) 1979-04-20 1979-04-20 Processing method of rotary head drum

Country Status (1)

Country Link
JP (1) JPS554788A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58122976A (en) * 1982-01-18 1983-07-21 Harima Kasei Kogyo Kk Vehicle for plastic printing ink

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58122976A (en) * 1982-01-18 1983-07-21 Harima Kasei Kogyo Kk Vehicle for plastic printing ink

Also Published As

Publication number Publication date
JPS5713054B2 (en) 1982-03-15

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