What is the ChromaCheckerâ„¢ Instrument Target?

There are several different versions of Instrument Inspector Targets, but all of them are based on the same list of patches.

Set of 42 patches is build as a spectrally designed selection of:

  1. vivid, saturated colors representing spot colors
  2. colors from typical CMYK offset production gamut
  3. near neutral gray 

Spectrally designed set to get a optimal distribution throughout the visible spectrum (at least  90% of visible spectrum i 5% steps)


On the target there are a lot of patches, signs and marks for different automatic scanning systems. But the core of it is an array of patches 6X7 in the center oftarget. First patch is a black one, then yellow, grey, orange up to green patch number 42. This order is used to present data in reports.


Patch order for manual mode
(handheld instruments unless
otherwise directed)

Corner patches
(important for proper position)

                                           

What are the available versions?

 

nX42_gray

B-42_300

VERSION X-42 B-42 I-42
Patch size:
13mm x 15,5 mm  
14mm x 18mm
6mm x 6mm
Notes:
X-42 Target is designed for most instruments on the market but focused on X-Rite™ instruments (including DTP70, iSis, i1Pro, i1iO) 
B-42 Target is designed for Barbieri™ instruments.
Can be used with hand held devices in Spot mode.
Can be used with hand held devices in Spot mode.
I-42 Target has the same 42 patches in the same sequence + extra  four CMYK patches required by ITX  and InkControl software. Those CMYK patches are ignored during uploading data. 
Fast data capturing for Intelitrax,  Exact witch Scan mode and other press side instruments 

Can be used with hand held devices in Spot mode. Do not measure first 4 patches (K,C,M,Y). 

 

Consult our compatybility list for more information about currently supported instruments.

 


Why 42 patches? 

There is a compromise between how much time we want to spend on scanning data for instrument validation, and how much data is necessary for a faithful statistical analysis. For some tests we need more data - but increasing number of patches will increase also a price and time in terms of manual measurement.

 


Why printed, not ceramic or metal? 

  1. Printed version makes it possible that the same target can be easily used by variety of different instruments including scanning devices (press console). Many shops have a variety of instruments that need to be compared to one another to check for accuracy. We focused on a universal solution for all measurement devices used in everyday production. 
  2. We use spectrophotometers for different graphic technologies - including inkjet. We expect a high degree of accuracy when assessing inkjet output. Ceramic tiles (e.g. BRCA tiles) are very different from what we measure in our day to day operations. 
  3. When comparing different technologies, ink-jet is stable enough to produce repeatable printouts - production variations can be reduced and controlled much better than other output technology.
  4. Ceramic tiles are expensive and for many scanning devices they can be used only in a laboratory environment, in a very manual mode, where the instrument is disassembled by high-level trained lab technicians.

 

 


Target Life Span 

Printed target is not as stable as ceramic one. Real Target's lifetime depends on several factors:

  1. Use of Instrument Inspector Target: 
    Some instruments can destroy the surface of target when measured multiple times. In some cases the rollers transporting target, or moving head can cause scratches on the target. To avoid target destruction, double check for that kind of issue before use. Ensure rollers are clean, and all mechanical parts in proper condition. Even if you are careful, hundreds of measurements can make visible changes on the laminated surface. This can cause deviations in data readings. Evaluate the surface conditions of the target carefully.
  2. Storage of Instrument Inspector Target: 
    Target is sensitive to light, especially UV components. We strongly recommend to avoid any unnecessary exposure. Keep target in black, light proof envelope when not in use.
  3. Maintenance of Instrument Inspector Target:
    Keep it completely clean. If necessary clean it gently with soft textile. It should be almost dry - just few drops of water can be used. Whenever cleaned with water wait at least two hours before use.  Never use solvents or any aggressive materials for cleaning purposes. 
  4. Age of Instrument Inspector Target:
    Every year some patches can change due to aging, even though the substrate is inks are extremely stable and tested for colorfastness. Typical color change due to normal usage is . 3∆E (00). It can dramatically increase when Target is not properly maintained or the surface is damaged, or dirty. 

 


Spot patches instead of CMYK

Instrument Inspector Target is based on spot colors not a CMYK. About 50% of patches are out of typical offset printing gamut (GRACol2006_Coated1v2):

However for evaluating different software programs, all patches have virtual RGB and CMYK values.
Values in the following table are not exact but can be used to setup capturing software:

ID RGB CMYK
1   4 4 3   90 79 65 95
2   255 253 21   6 0 100 2
3   170 168 171   40 29 29 6
4   254 149 18   0 38 100 0
5   24 183 255   98 25 0 1
6   223 5 49   0 100 84 23
7   198 251 223   28 1 14 0
8   244 21 16   0 98 100 6
9   240 223 172   14 12 34 0
10   135 17 72   21 99 53 62
11   234 250 235   16 2 11 0
12   126 213 255   60 11 0 0
13   8 28 225   100 82 0 32
14   246 191 130   7 24 51 0
15   185 12 138   14 100 16 32
16   183 189 147   38 22 41 2
17   255 69 107   0 71 58 0
18   1 24 173   100 80 0 56
19   215 255 16   32 0 100 0
20   81 81 85   75 63 61 56
21   57 162 255   87 35 0 0
22   255 25 166   0 90 17 0
23   135 255 11   68 0 100 0
24   206 223 221   27 11 14 0
25   27 154 166   100 19 2 39
26   255 255 255   9 4 5 0
27   194 60 17   0 75 100 40
28   102 255 108   63 0 55 0
29   202 94 213   26 61 3 0
30   130 128 134   57 46 45 18
31   183 196 202   36 19 19 2
32   163 35 240   44 85 0 0
33   243 252 141   15 1 51 0
34   60 187 6   100 0 98 51
35   255 182 20   0 24 100 1
36   204 233 255   32 8 3 0
37   28 64 255   100 73 0 3
38   214 179 108   27 28 59 0
39   31 246 123   100 0 46 0
40   255 142 215   2 40 8 0
41   95 61 215   76 84 0 1
42   69 254 4   100 0 98 2