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6. Data Color:
Data color is an optical Instrument constructed
based on the reflective property of light in order to
measure color strength of a substrata specially
fabric.

7. 2

8. 1.Color strength.
2.Color difference.
3.CIA (commission of international de ecrailage)
4.Recipe prediction and recipe correction.

9. K/S = (1-R)*2/2R
R= reflection %
here
K/S value is proportional to R%
1.Measurement technique of Color strength k/s value

10. dE=(dL^2 +dA^2 +dB^2)^0.5
dL=L1-L2
dA=A1-A2
dB=B1-B2
If dE is less than 1 then the sample becomes pass otherwise it will fail

11. If L*=0 then the substrate
becomes 100% black or
R%=0
If L*=100 then the substrate
becomes 100 % white

12. To get the desired shade which colors are
mixed together, it can be selected very easily
by using spectrophotometer
After dyeing one sample it can be compared
with the standard one. If there is shade
variation on color difference dE is considered
to be greater than 1 then the recipe can be
corrected for getting the desired shade%

13. TANIA AKHTER
TETHYS SOUROV
SHAHADAT AMIT
SAJID SHAHADAT
SHOHAG SHEIKH