Re: CTP - reduced dot
Re: CTP - reduced dot
- Subject: Re: CTP - reduced dot
- From: Bret Hesler <email@hidden>
- Date: Wed, 08 Mar 2006 12:03:38 -0500
- Thread-topic: CTP - reduced dot
Yes. We did one of the runs for the GRACoL committee at 175LS with linear
plates, and had around 1% move at the midtone to get the GRACoL tone curve.
We recently put in a new press and ran the test at 200LS and got almost
exactly the same results. Our inks matched the solid LAB values from ISO
12647-2.
Bret Hesler
L.P. Thebault Company
On 3/8/06 10:59 AM, "Jon Crook" <email@hidden> wrote:
> Are you able to achieve gray balance and still get GRACoL 7 lab values for
> CMYK while getting a plate curve that is close to linear?
>
>
> On 3/8/06 9:20 AM, "Bret Hesler" <email@hidden> wrote:
>
>> Our inks are relatively low in Tack. It reduces the problems with picking,
>> and allows us to get relatively close to legacy midtone gain values with
>> plates that are close to linear.
>>
>> Bret Hesler
>> L.P. Thebault Company
>>
>>
>> On 3/8/06 9:11 AM, "Jon Crook" <email@hidden> wrote:
>>
>>> We are also running to GRACoL 7 but what you run to depends on what your
>>> intentions are. If you want to match legacy work then you would want to
>>> achieve the lab values, densities, and the appropriate dot gain as to what
>>> you where running before you went CTP. I have found that GRACol 7 is much
>>> easier to maintain than our legacy specs so any reprints that come through
>>> get a new proof for approval. In my experience, linear plates seem to look
>>> pretty flat on press
>>>
>>>
>>> On 3/8/06 7:16 AM, "Bret Hesler" <email@hidden> wrote:
>>>
>>>> We run curved plates to match the GRACoL 7 tone curve. When we switched to
>>>> digital halftone proofing and CTP, our legacy standard was Analog
>>>> waterproof. Three years ago, we lowered the dot gain targets to match the
>>>> GRACoL 6 spec, around 20%. Now with the GRACoL 7 targets, our plates are
>>>> near linear, and dot gains are in the mid to high teens.
>>>>
>>
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