Recent content by dremaley

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    What QC process is used at your plant?

    Re: What QC process is used at your plant? If your proofs are made to SWOP, then you must adjust the 4 plate curves to create the correct density, dot gain, and gray balance. If the plate curves are incorrect the pressman has no choice than to "push" or "pull" ink, resulting in an unstable...
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    What QC process is used at your plant?

    Re: What QC process is used at your plant? As a process control consultant, I usually recommend a "process control sheet". This sheet includes the plate measurements of the 2% and 50% dots of each color plate, K-C-M-Y. This tone scale is placed in the plate bend area and can be measured...
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    Standard ink densities?

    Re: Standard ink densities? The reference solid ink densities for uncoated are (based on Gracol 6) - Y. 95 M 1.12 C 1.00 K 1.25 These are DRY numbers wet are about + .07 for C-M-Y and +.15 for black. A "secret" is to develop plate curves so that uncoated prints the same dot gain as coated -...
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    Is a Ryobi 3302 (Itek 3985) capable of the odd bit of Process work?

    Re: Is a Ryobi 3302 (Itek 3985) capable of the odd bit of Process work? On smaller format presses (A.B.Dick, Ryobi, Hamada) you should separate with higher amounts of GCR. This means that the color separation has less yello/magenta/cyan and more black. This makes it easier to print and...
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    Multiple rounds of color correction color matching problems

    Re: Multiple rounds of color correction color matching problems Color correction and change depends on where it is in the color scale. Example, browns, purples and grays are problem colors at press - but why? It's because their C-M-Y values are near the midtone values (40-50-60%). For many...
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    Dot shape for web presses

    Re: Dot shape for web presses The standard and most stable dot shape for the web press is round. A euclidian dot changes throughout the tone scale. starting out round, changing to eliptical, square at 50%, back to eliptical then to round in the shadow. The advantage of eliptical is that...
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    Four colour process colour sequence

    Re: Four colour process colour sequence For color, the 'correct' sequence is C-M-Y / Black can be first or last. This sequence was studied by PIRA and others. The 'color' of Reds are better with this sequence but the greens are not. If you change the sequence the green becomes better but the...
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