Magnetic Card

	LK233A	LK243A	LK233B	LK243B
Technical Characteristics
Base film material	PET	PET	PET	PET
Base film colour	milky white	milky white	milky white	milky white
Base film thickness (μm)	188	188	250	250
Surface  colour	white	white	white	white
Magnetic Properties
Coercivity(Oe)	1750	2750	1750	2750
Mem.mag.flux（μWb/m）	1.8±0.18	1.8±0.18	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%

Unprinted card			printed card
				Protection layer
				Printing layer
				White layer
				Magnetic layer
	Silver layer			Substrate
	Magnetic layer			Printing layer
	Base film			Protection layer