AS ISO 18935:2019 Imaging materials — Colour images — Determination of water resistance of printed colour images
7.1  General considerations
The example test patterns shown in 7.2 can be produced in any of the available image programs [in this case, Adobe Photoshop® 2) was used]. The high-density areas were generated by assigning them the maximum RGB colour values. The lower density areas are targeted to be approximately 0,5 OD above d min . The RGB values used are determined by trial and error and will likely be different for each printer system investigated. The print should be made by using the manufacturer’s recommended driver settings for the colorant and media being investigated. Strong caution should be observed when using driver settings that are not recommended or unknown (i.e. the media and/or colorant being used has no recommended values by the printer’s manufacturer). In these cases, the amount of colorant delivered to the media may be too little or too much and thus not represent a true maximum density d max for that system. This can cause the results of the above tests to be in error. However, if those settings represent the intended use, then these shall be used, as they will then represent what the end user will observe. In all cases, the exact printer settings used, the colour settings (i.e. RGB values) given by the imaging- processing program, and the program used shall be reported.
When producing print samples from analogue imaging systems, the manufacturer’s recommended processing conditions shall be used. If deviations from that method occur, they shall be reported.
8  Test report
For each system tested, the user of this document shall report the primary failure mode, such as colorant bleed, cockle, delamination, formation of rings (caused by colorant migration or water damage to the medium), loss of gloss, and removal of colorant, colour to colour bleed, etc. Comparison to the control (untreated) print is very helpful in this regard. The overall water resistance shall also be assigned using the categories listed in 4.2 to 4.4 for Method 1, 2, and 3. It is especially important to note conditions where the print is damaged to the point that image information is lost. For the edge immersion test, the grain direction shall also be reported.
NOTE  Not all test methods may be relevant to a specific usage case.