Support

FAQ

June 22, 2022

Virtual Colorimeter

Any measurement device like a colorimeter if colorimetrical data is available (L*a*b* D50/2°) can be tracked by Instrument Inspector.

CGATS .txt file with sample data (red  color) for ChromaChecker Instrument Inspector Target I-42 (additional start KCMY patches are skipped)

Measurement patches order:  —> start from [1] Black, next [2] Yellow   ... up to last [42] Green.


 

Procedure

  1. Measure patches in proper order 
  2. Write down or export in possible L*a*b* measurements for each 42 patches
  3. Replace values in the sample file below
  4. Save it in a text file (.txt)
  5. Upload to Instrument Inspector

 

CGATS sample file:

CGATS.17CGATS.17
ORIGINATOR "ChromaChecker"
DESCRIPTOR "ChromaChecker"
CREATED "2017-09-14 08:15:14"
INSTRUMENTATION "Virtual Instrument"
SAMPLE_BACKING "white"
MEASUREMENT_CONDITION "M0"
MAKEREADY_MODE "Production"
OPERATOR_NAME "Name"
CUSTOMER_NAME "Name"
JOB_NAME "ChromaChecker Target"
JOB_ID "X-42"
PRESS_NAME "auto-recognition"
PAPER_NAME "auto-recognition"
NUMBER_OF_FIELDS 8
BEGIN_DATA_FORMAT
SAMPLE_ID CMYK_C CMYK_M CMYK_Y CMYK_K LAB_L LAB_A LAB_B
END_DATA_FORMAT
NUMBER_OF_SETS 42
BEGIN_DATA

1

100.00

100.00

100.00

0.00

22.80

0.10

-2.02

2

7.06

1.18

100.00

0.00

89.31

-8.67

88.17

3

43.14

30.98

32.16

0.00

68.06

-0.45

-2.11

4

1.18

38.82

100.00

0.00

76.12

26.49

77.99

5

98.82

25.88

1.18

0.00

53.40

-21.73

-56.91

6

23.92

100.00

90.98

0.00

44.83

56.04

24.55

7

29.02

1.18

14.12

0.00

86.92

-12.55

-5.85

8

5.10

98.82

98.82

0.00

50.23

62.05

38.10

9

14.12

12.16

34.12

0.00

86.00

-0.19

17.88

10

67.06

100.00

83.92

0.00

32.88

25.22

4.17

11

16.86

1.96

10.98

0.00

90.16

-4.92

-1.77

12

60.00

9.80

1.18

0.00

71.58

-10.46

-32.98

13

100.00

83.14

1.96

0.00

28.18

14.66

-50.63

14

7.06

23.92

50.98

0.00

82.58

9.41

32.31

15

43.14

100.00

41.18

0.00

40.87

49.48

-2.10

16

38.82

23.92

41.96

0.00

71.87

-4.27

8.11

17

1.18

70.98

58.04

0.00

67.38

52.42

28.41

18

100.00

87.84

18.04

0.00

25.90

7.13

-31.24

19

32.16

1.18

100.00

0.00

83.78

-30.65

79.84

20

96.08

90.98

89.80

0.00

34.04

-0.08

-1.34

21

87.06

34.90

1.18

0.00

55.43

-9.44

-52.35

22

1.18

89.80

16.86

0.00

58.62

67.66

2.92

23

67.84

1.18

100.00

0.00

72.76

-63.94

55.89

24

27.06

10.98

14.12

0.00

82.51

-3.21

-6.31

25

100.00

49.80

27.84

0.00

42.18

-20.97

-33.99

26

9.02

3.92

5.10

0.00

93.63

-0.27

-4.75

27

41.18

83.14

100.00

0.00

44.95

31.28

32.43

28

63.14

1.18

54.90

0.00

77.76

-55.24

9.19

29

25.88

61.18

3.14

0.00

62.52

30.86

-15.23

30

65.10

52.94

52.16

0.00

52.89

-0.04

-1.71

31

36.86

20.00

20.00

0.00

75.08

-2.65

-7.47

32

43.92

85.10

1.18

0.00

49.18

47.17

-32.23

33

14.90

1.18

50.98

0.00

89.98

-10.97

36.59

34

100.00

49.02

100.00

0.00

37.12

-40.85

16.03

35

1.18

25.10

100.00

0.00

81.35

14.21

84.19

36

32.16

7.84

3.14

0.00

83.42

-3.43

-17.51

37

100.00

72.94

1.18

0.00

38.77

13.63

-63.87

38

27.06

27.84

60.00

0.00

73.10

1.87

26.02

39

100.00

1.18

45.88

0.00

58.89

-57.69

-16.12

40

1.96

40.00

7.84

0.00

79.42

26.51

-0.61

41

76.08

83.92

1.18

0.00

41.52

22.64

-33.67

42

100.00

1.18

98.04

0.00

53.15

-70.70

25.67

END_DATA

 

 

 

 

Other Targets

Create a corresponding Target CGATS file.

CMYK reference values have to be exactly as specified for a specific Target (second decimal place)

 

Tips

Some software that drives Instruments may build a Job Template using a list of patches - in most cases,
a CGATS file can be uploaded. 

If your software can manage metadata:

PRESS_NAME "auto-recognition"
PAPER_NAME "auto-recognition"

you may use it for the auto-recognition feature. Files uploaded by Uploader will be auto-recognized. This requires a corresponding auto-recognition setting on Instrument/Target side. 

 

 

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