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.)
Expired
Application number
GB5964/52A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 BASF SE, Badische Anilin and Sodafabrik AGfiledCriticalBASF SE
Publication of GB717529ApublicationCriticalpatent/GB717529A/en
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
G11B5/127—Structure or manufacture of heads, e.g. inductive
Landscapes
Engineering & Computer Science
(AREA)
Manufacturing & Machinery
(AREA)
Magnetic Heads
(AREA)
Abstract
717,529. Magnetic structure. BADISCHE ANILIN- & SODA-FABRIK. March 7,1952 [March 14, 1951], No. 5964/52. Addition to 717,573. Class 38(2) The core of an erasing head for sound recording apparatus is made of magnetic ferrite, e.g. nickel-zinc, manganese, or manganese-zinc ferrite, and may be of annular or other shape and prepared in the manner of the recording head core described in the parent Specification.
GB5964/52A1951-03-141952-03-07Improvements in erasing heads for use in apparatus for the magnetographic recording and reproduction of sound
ExpiredGB717529A
(en)