Setting Headroom on the blackpoint and whitepoint

General discussions ColorWasher, FocalBlade, LightMachine, B/W Styler and ContrastMaster
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jafent

Setting Headroom on the blackpoint and whitepoint

Post by jafent »

My printer prints anything below 20,20,20 as black. How do I set a value in Colorwasher that will cause it to use 20,20,20 as the blackpoint?

HaraldHeim
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Post by HaraldHeim »

If your printer does that, then there is something wrong with its ICM profile or with the printer driver. The ICM profile converts the pixel values from 0 to 255 to a value range that looks good on your printer.

Have a look at your printer driver options. Maybe there's a bad setting there. You could also try downloading the latest driver from your printer manufacturer's homepage. If you have the means to calibrate you printer to create a new ICM profile, please do that.

In the meantime you can use the Levels tool in Photoshop or the Histogram tool in PSP to scale image values to the 20 - 255 range. But this also means a loss in quality. So I would recommend that you try to solve the basic problem.

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