Recording medium orging pad
AssigneeSony Corporation
InventorsHirokazu Odagiri, Ko Ishikawa
Life of this patent
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Abstract
A recording medium urging pad can urge a recording medium such as a magnetic tape against a recording and reproducing head stably and reliably. A head pad (10) fixed to a supporting member such as a leaf spring (9) comprises a first layer (10a) with a low elastic modulus contacting with a magnetic tape (T) and a second layer (10b) with an elastic modulus higher than that of the first layer (10a) fixed to the leaf spring (9), wherein a thickness (Ta) of the first layer (10a) and a thickness (Tb) of the second layer satisfy the following equation expressed as: ##EQU1## and the first and second layers (10a) and (10b) are bonded by an adhesive (10c).
Claims5
A recording medium urging pad fixed to a supporting member for urging a recording medium against a recording and reproducing head comprising:
- a first layer made of a polytetrafluoroethylene fiber felt for contacting a recording medium, said fiber felt having an elasticity modulus less than 12 gf/mm.sup.2 ;
- and
- a second layer with an elastic modulus higher than that of said first layer and fixed to said supporting member, wherein when Ta assumes a thickness of said first layer and Tb assumes a thickness of said second layer, the thickness Ta of said first layer satisfies the following equation expressed as:
- ##EQU4##
A recording medium urging pad fixed to a supporting member for urging a recording medium against a recording and reproducing head comprising:
- a first layer, made of a polyfluoroethylenepropylene fiber felt, or a polytetrafluoroethyleneperalkoxyethylene fiber felt, for contacting a recording medium;
- and
- a second layer with an elastic modulus higher than that of said first layer and fixed to said supporting member, wherein when Ta assumes a thickness of said first layer and Tb assumes a thickness of said second layer, the thickness Ta of said first layer satisfies the following equation expressed as:
- ##EQU5##
Dependencies are inferred from the claim text.