[argyllcms] Re: DTP20 (Pulse) patch size error
- From: Bob Coss <bobcoss@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Fri, 19 Aug 2011 07:38:00 -0400
Phil,
Your experience explains much. I've always used Qimage to print my test
charts on XP, and never had any resizing problems. I'm glad you find a
good way to get around the problem.
I still think it's important to try to use the tool that you are going to
use the profile with to print the chart just in case there are other things
going on there that need to be taken into account. Maybe that doesn't
matter.
Have any of you sent your DTP20s in for new batteries or recalibration?
Bob
On Fri, Aug 19, 2011 at 3:24 AM, Philip Reed <philipreed@xxxxxxxxxxxxx>wrote:
> ** **
>
> Bob,****
>
> ** **
>
> Finally got clean scans with the DTP20 in XP with everyone’s help! Seems
> the printer utility I was using (Adobe Color Print Utility) scaled down the
> image slightly. I tried printing from ACDSee and that seems to introduce
> scaling problems once margins and settings are taken into account. How hard
> can it be to print a document 1 to 1? Was finally able to print as a TIFF
> in Photoshop and as an EPS in Illustrator, at the documents resolution
> without scaling. Can’t believe all this was caused by my inability to
> understand the print options in various graphic apps. It seems to me that
> in an attempt to differentiate themselves programs try to make something
> simple more complicated than it needs to be.****
>
> ** **
>
> Should be able to get back to point of all this…comparing the profiles
> created by the Colormunki versus the DTP20.****
>
> ** **
>
> Regards – Phil****
>
> ** **
>
> *From:* argyllcms-bounce@xxxxxxxxxxxxx [mailto:
> argyllcms-bounce@xxxxxxxxxxxxx] *On Behalf Of *Bob Coss
> *Sent:* Thursday, August 18, 2011 4:09 PM
>
> *To:* argyllcms@xxxxxxxxxxxxx
> *Subject:* [argyllcms] Re: DTP20 (Pulse) patch size error
> ****
>
> ** **
>
> 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****
>
--
Hay que aprender algo nuevo todos los días
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