NDLI: Mass production technique of sound recorded sheet by magnetic contact printing

Content Provider	IEEE Xplore Digital Library
Author	Namikawa, M. Tochihara, S. Hoshino, Y.
Copyright Year	1965
Abstract	The authors have developed an industrial duplicating machine for prerecorded sound sheet by magnetic contact printing process. The main advantages of the process are its simplicity and high speed. The apparatus is free from complicated moving head mechanism and adjusted amplifiers. Duplication is performed by keeping slave sheets close contact with master sheets, and applying 50 Hz magnetic field. By this process about 5,000 copy sheets that have good sound quality almost comparable to that of direct recording, are able to be printed from one master sheet, and the duplicating capacity of a machine is around 1,000,000 sheets per month.
Sponsorship	IEEE Magnetics Society
Starting Page	755
Ending Page	757
Page Count	3
File Size	269606
File Format	PDF
ISSN	00189464
Volume Number	14
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1978-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mass production Magnetic heads Master-slave Magnetic recording Magnetic fields Audio recording Printing machinery Abstracts Machinery production industries Audio tapes
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Mass production technique of sound recorded sheet by magnetic contact printing