Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1983-01-28
1985-10-22
Newsome, John H.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427128, 427130, 427131, 428900, B05D 306
Patent
active
045488339
ABSTRACT:
A method for preparing a magnetic recording medium is disclosed. The method includes providing a support base and a particular coating composition for the base. The composition is comprised of a ferromagnetic powder, a binder containing a compound capable of being polymerized with electron beam irradiation, and a solvent. The composition has apparent viscosity of about 1 to 150 centipoise at a shearing speed of 4000 sec.sup.-1. After coating the composition on the support base, the coated layer is subjected to magnetic orientation. During orientation or shortly thereafter the coated layer is subjected to electrom beam irradiation and then dried in order to evaporate the solvent. The magnetic recording medium prepared has excellent dispersibility of the ferromagnetic fine powder within the binder, which further provides a smooth surface and excellent electrical properties as well as anti-abrasion properties.
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Hashimoto Hiroshi
Okita Tsutomu
Fuji Photo Film Co. , Ltd.
Newsome John H.
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