[argyllcms] Re: DTP20 (Pulse) patch size error
- From: Bob Coss <bobcoss@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Thu, 18 Aug 2011 16:08:35 -0400
Phil,
I don't think I had a reason to put -d3, it might have been oversight. I
haven't done this for years. The thread is motivating me to get it
installed on Ubuntu and try things out again with the latest version.
Iĺl report back after I get it working again either with XP or Ubuntu.
Bob
On Thu, Aug 18, 2011 at 2:02 PM, Philip Reed <philipreed@xxxxxxxxxxxxx>wrote:
> Hi Bob,
>
> Thanks for your detailed notes. I'm wondering why you use -d3 in
> targen...isn't that for video RGB? I'm using -d2 (printer RGB)
>
> I have gotten the Pulse to work under XP with no problem...it's just
> getting it to read the patchs
>
> Regards - Phil
>
> -----Original Message-----
> From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:
> argyllcms-bounce@xxxxxxxxxxxxx] On Behalf Of Bob Coss
> Sent: Tuesday, August 16, 2011 10:30 AM
> To: argyllcms@xxxxxxxxxxxxx
> Subject: [argyllcms] Re: DTP20 (Pulse) patch size error
>
> Here are my notes un using the DTP20 from about 3 years ago. I'll dig
> one out and see if I can get it to work on the most recent versions
> under XP and Ubuntu. I got good results in the past, but had
> problems with chart read crashing ocasionally.
>
> Hope it helps some.
>
> Bob
>
> 
>
> DTP20 Argyll Notes
> Editado el 20/11/08 por bobcoss
>
>
> Target Patches Table
>
> For the dtp20 device, there is always a header row for the first page.
> You must subtract one row from the recommended number of rows for the
> first page. subsequent pages can have the full number of rows
> recommended by targgen. You can use the following table to determine
> how many patches to print per row for different sized papers.
>
> Letter 8.5x11, 30 patches per row, 19 rows per page.
> 1 page = targen -v -d3 -f540 patchfile
> 2 pages = targen -v -d3 -f1110 patchfile
> 3 pages = targen -v -d3 -f1680 patchfile
> 4 pages = targen -v -d3 -f2250 patchfile
>
> targen -v -d3 -f2250 patchfile
> printtarg -v -i20 -t -pLetter patchfile
>
> 11x17 paper, 30 patches per row, 41 rows per page. Note! That the
> dtp20 has a limit to the number of patches it can hold internally. I
> havn't figured it out yet, but it wouldn't recognize the header row of
> the 3 pag 11x17 target. I had to read it tethered
>
> 1 page = targen -v -d3 -f1230 patchfile
> 2 pages = targen -v -d3 -f2430 patchfile
> 3 pages = targen -v -d3 -f3660 patchfile
>
> targen -v -d3 -f3660 -c5100_PBPG260_S5_D50.icm -A.8 patchfile
> printtarg -v -i20 -t -p431.8x279.4 patchfile
>
> To use an old profile to precondition the new printer target add the
> following options: -c oldprofile.icc -A.8
>
> Once targets have been printed, let them dry
>
> 1. Calibrate the dtp20
> 2. Push the activator 1 time, and after the beep read the header
> 3. Push the activator 1 time, and after the beep read the first strip
> 4. move the guide down 1 row, and repeat with #3 until all have been read.
> 5. The unit will pulse the green light when all the patches have been read.
>
> chartread -v -c1 patchfile = to read the patch data.
>
> colprof -v -D"Printer A" -qm -S ../sRGB.icm -cmt -dpp PrinterA
>
> You can specify a different input profile than sRGB.icm. The
> documentation recommends using a profile closest to the color space
> for your images. So far, I've noticed that sRGB works good for most
> of the images I've printed after creating the profile.
>
> Using the DTP20
>
> Calibrate:
>
> 1. From a green light, click 3 times to enter clear memory mode (solid
> blue).
> 2. Rapidly press the button 3 more times to enter calibration mode
> (solid yellow).
> 3. move the cover for the calibration patch
> 4. Press down on the activation button and hold. The indicator light
> will remain yellow.
> 5. When the calibration is complete, the unit will beep, and the green
> light will come on solid.
>
> Clearing Device Memory
> 1. Press the activation button 3 times.
> 2. When it turns blue, hold the button until it resets.
>
> Read the Target ID
> 1. Position the unit to the left of the target.
> 2. Press and release.
> 3. When the unit beeps and the green light goes off, slide the unit to
> the right.
> 4. When it has been read successfully, the unit will blink green two
> times and beep
>
>
>
> On 8/16/11, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote:
> > Philip Reed wrote:
> >> I checked again and yes, the patch widths are 6.4mm at most. Perhaps
> >> 6.3mm.
> >> I'm using a digital caliper.
> >
> > So that's measuring a bunch of patches and taking the average ?
> >
> >> If there is a scaling error, I'm not sure how
> >> that would be introduced? I'm using the same software and printer
> driver
> >> to
> >> print the patches from ColorPort or Monaco. I always make sure that any
> >> scaling is off.
> >
> > Somtimes printers don't quite print at the resolution that say they do.
> >
> > What's of interest is what margin the DTP20 has. The test chart document
> > doesn't mention this, it just talks about exact sizes. The hint from
> > your experience is that the DTP20 tolerates a slightly too long patch
> > more than a slightly too short patch. I have no idea what the limits
> > are though, since my experience was that it would not read a TID
> > strip with patches at 6.5 mm for instance, they had to be exactly 6mm.
> >
> >> Any option that allows for the scaling of patch width and height would
> be
> >> appreciated.
> >
> > It's at the stage of needing to fiddle the values and re-compile.
> >
> > Graeme Gill.
> >
> >
>
> --
> Sent from my mobile device
>
> Hay que aprender algo nuevo todos los días
>
>
>
--
Hay que aprender algo nuevo todos los días
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