06-04-2019, 05:07 PM
(06-04-2019, 07:11 AM)rich2005 Wrote: ...This thought looks to be what I had in mind with idea of "absolute" white. While I realize that the printer cannot print real white the question becomes how far "off white" must it be before the printer starts applying ink/pigment?
On the basis that there is (usually) no white ink used in CMYK printing ane white = no ink / transparent
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(06-04-2019, 07:11 AM)rich2005 Wrote: ...I must admit that alpha channels are something I don't really understand but things such as text and borders are being done by adding layers. However, as you say "printing is complex procedure" which is the explanation I might use to explain that it is something that GIMP does poorly if at all. Therefore, these images need to be rendered into a standard image format, in my case .tif, that can be opened by other software for the purpose of printing. At this point those white areas are as much a part of the image as anything else. Aren't they?
Remove the white component from the image. Add alpha channel to image / color-to-alpha using white as the colour.
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