Thermal Magnetic Card

	LK332B	LK342B	LK333B		LK343B
Technical Characteristics
Base film material	PET	PET	PET		PET
Base film colour	milky white	milky white	milky white		milky white
Base film thickness (μm)	250	250	250		250
Surface  colour	silver	silver	white		white
Magnetic Properties
Coercivity(Oe)	1750	2750	1750		2750
Mem.Mag.Flux（μWb/m）	1.4±0.14	1.4±0.14	2.0±0.2		2.0±0.2
Squareness	≥0.85	≥0.85	≥0.85		≥0.85
Switching field	≤0.35	≤0.35	≤0.35		≤0.35
Signal Amplitude Characteristics
Signal amplitude  UA1	80~130%	80~130%	80~130%		80~130%
Resolution     UA3	≥70%	≥70%	≥70%		≥70%
Erasure         UA4	≤5%	≤5%	≤5%		≤5%
Back-reading Property	≤5%	≤5%	≤5%		≤5%
Themal Properties
Background density	≤0.2	≤0.2	≤0.2		≤0.2
The Density at 60℃	≤0.2	≤0.2	≤0.2		≤0.2
The Density at 130℃	≥1.4	≥1.4	≥1.4		≥1.4

Structure
				Shield layer
				Magnetic layer
				Substrate
				Thermal layer
				Printing layer