Head-gimbal assembly including a flexure tongue with stand-offs arranged to facilitate lateral light entry
View Patent ↗A head-gimbal assembly (HGA) is disclosed. The HGA comprises a head including a slider having a leading end and a trailing end that define a slider length. The head further includes a read transducer disposed at the trailing end. The HGA further comprises an adhesive material and a flexure that includes a tongue to which the head is adhered. The tongue includes three stand-offs in contact with the slider, each of the three stand-offs spanning a stand-off length that is one-half the slider length or less. Two of the three stand-offs are disposed adjacent the leading end.
1. A head-gimbal assembly (HGA) comprising:
a head including
a slider having a leading end and a trailing end that define a slider length, and
a read transducer disposed at the trailing end;
a flexure tongue; and
an adhesive material adhering the head to the flexure tongue;
wherein the flexure tongue includes no fewer than and no more than three stand-offs in contact with the slider, each of the three stand-offs comprising a dielectric material and spanning a stand-off length that is one-half the slider length or less, two of the three stand-offs being disposed adjacent the leading end,
wherein the adhesive material is an epoxy material that cures faster when exposed to ultraviolet light, and
wherein one of the three stand-offs is disposed approximately mid-way between the leading end and the trailing end and is circular in shape.
2. The HGA of claim 1 wherein the flexure tongue further includes at least one through-hole.
3. The HGA of claim 1 wherein the dielectric material comprises polyimide.
4. The HGA of claim 1 wherein the flexure tongue comprises stainless steel.
5. A head-gimbal assembly (HGA) comprising:
a head including
a slider having a leading end and a trailing end that define a slider length, and
a read transducer disposed at the trailing end;
a flexure tongue; and
an adhesive material adhering the head to the flexure tongue;
wherein the flexure tongue includes no fewer than and no more than three stand-offs in contact with the slider, each of the three stand-offs comprising a dielectric material and spanning a stand-off length that is one-half the slider length or less, two of the three stand-offs being disposed adjacent the leading end,
wherein the adhesive material is an epoxy material that cures faster when exposed to ultraviolet light, and
wherein each of the three stand-offs comprises a dielectric layer and a conductive layer.
6. The HGA of claim 5 wherein the conductive layer comprises copper.