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Mack
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« on: July 01, 2011, 05:10:07 PM » |
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On the printer test target, Profile Prism shows most of the middle vertical white-punch outs to be overlapping onto the black bars that divide the colored squares.
The punch-out at the corners are fine and centered, just the mid-section is overlapping for some reason. I've tried the "Jiggle Corners" on and off, but still they overlap around the center area, especially vertical portions.
Ideas?
Mack
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Terry-M
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« Reply #1 on: July 01, 2011, 06:50:34 PM » |
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Hi Mack,
The most likely cause is that the target was not square on the scanner glass. You should be able to see that as you scroll horizontally or vertically within PP.
You have to be careful that the target does not move as you close the scanner lid. Was the target flat on the glass?
Terry
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Mack
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« Reply #2 on: July 02, 2011, 12:18:23 AM » |
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Thanks Terry. Seemed it was flat on the scanner as I use a piece of black velvet and a weight on the cover. Looked fairly square in Profile Prism as I moved it side-to-side too.
Vuescan has a new version out today (July 1, 2011) so I'm re-trying that and seeing if it can be more squared on the scanner. I believe the color target themselves measure out to be 7 5/8" x 5 3/8" to the color square edges and not the black border.
Anyway, trying another scan with the newer version as he mentioned "HP updated" (flatbed scanner I'm using), but issues were only with Mac and Linux. I'm using Windows 7 64, but who knows?
Mack
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Mack
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« Reply #3 on: July 02, 2011, 05:50:32 PM » |
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This is odd.
With the latest version of Vuescan, the white punch-outs start in the center, then they move to the right a bit, then go to back to center, and then they move more to the left until they rest on the black areas before they move back to the right and center themselves on the right-hand side.
I went ahead with a profile even though it reported some 63 square error. The ITA-8 target reported "Excellent" in everything.
The ITA-8 target punch-outs are centered well, just the "Printer's TIF target" has centering issues for some reason. I tried a 4 times scan too in Vuescan RAW which seemed to help over the one-time scan in the number of squares in error. That went from 123 square errors with one pass, down to 63 squares in the second with 4 scanner passes.
Mack
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Terry-M
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« Reply #4 on: July 02, 2011, 07:11:07 PM » |
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Mack,
I've just scanned a printer target with Vuescan 9.0.47 - 64bit with a Canon 8400F scanner and there are no problems at all with centring the "punchouts"; they are even across the whole of the printer target.
You should be using the raw output from Vuescan.
Terry
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Mack
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« Reply #5 on: July 03, 2011, 03:20:10 AM » |
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Thanks Terry for the feedback.
I don't know what is going on here with the "walking white punchouts." They are centered on the ITF-8 target, just the TIF RAW print from the new Canon 9000 Mark II printer is presenting problems. I get Excellent on the ITF-8 target on the TIF RAW scan, so something is different with the print's color squares dimensions maybe?
I'm thinking of trying to rotate the TIF print from the landscape mode to the portrait mode and then trying it in the scanner. Maybe the paper isn't moving the same speed through the printer rollers? I don't know why it is different, but it is. It's as though the print must be compressed (rollers slipping?), then normal (where the white squares are centered), and then stretched or compressed as the squares move onto the black separation lines as Profile Prism tries to read it.
If by rotating the print format, if the white punch-outs move up and down instead of along the horizontal axis as they do now, then the printer must have some paper feed issues maybe? Too new and maybe needs some break-in time?
Mack
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Fred A
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« Reply #6 on: July 03, 2011, 09:33:14 AM » |
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Just a wild idea. Make sure there is no resizing or scaling or anything turned on in the driver where the printer is adjusting the scale of the print. Fred |
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« Last Edit: July 03, 2011, 09:36:33 AM by Fred A »
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Terry-M
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« Reply #7 on: July 03, 2011, 12:46:34 PM » |
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Make sure there is no resizing or scaling or anything turned on in the driver where the printer is adjusting the scale of the print. The printer target size should be 7.92 x 5.77 inches. Are you using Qimage to print - there is a special Job that can be recalled to print targets. That's how I checked the size, by checking the Qimage print queue data but as Fred says, if your driver is scaling, you are scuppered. Terry |
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Fred A
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« Reply #8 on: July 03, 2011, 01:31:00 PM » |
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That's how I checked the size, by checking the Qimage print queue data but as Fred says, if your driver is scaling, you are scuppered.
Terry Can anyone tell me what "scuppered" means! Fred :-) |
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Terry-M
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« Reply #9 on: July 03, 2011, 01:44:48 PM » |
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Can anyone tell me what "scuppered" means! Since I said it  It's a nautical term for sinking a boat, usually deliberately; in the colloquial sense, it mean to bring to an end a plan, deliberately or accidently.  Terry. |
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Fred A
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« Reply #10 on: July 03, 2011, 01:48:01 PM » |
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Like SCUTTLED?
Fred
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Terry-M
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« Reply #11 on: July 03, 2011, 01:51:10 PM » |
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Mack
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« Reply #12 on: July 03, 2011, 06:30:38 PM » |
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Okay. I see Vuescan has made a major re-work of their interface on version 9.0.48 now if you look. The RAW is a bit harder to find too, but I think I got it. They really moved stuff around and removed some stuff too over earlier versions.
The paper I'm having issues with is the "Canon Platinum Pro." It may be just too thick for the rear feed of the printer even though the instructions says it's okay to do it from there. I had no issues with the Canon Glossy Pro II paper and the punch-outs were where they should be.
I just made another print out of it and it is even worse than the first and 437 squares are reported wrong vs. the 63 prior. The punch-outs are moving way to the left now and even completely into the adjacent squares before they move back to the right and end in the middle of the right side. They do not shift up or down in position, just side to side.
Fwiw, I also have a smaller Epson Charm PM-225 portable that does only 4x6 inch prints and I had no issue getting the punch-outs to center even on the smaller paper format and yield a good profile, but this was with version Vuescan 9.0.47 and not this newer one (9.0.48). Odd.
add:
This new version of Vuescan 9.0.48 is giving me far more errors for some reason with the clipping count, which is up to around 1800 now. Aside, I decided to try and do a front-feed (which is flat through the printer) with the Canon Platinum Pro paper and that seems to have settled down the marching white punch-outs a lot. Must be some curl thing as it feeds through the rollers that Profile Prism doesn't like in the alignment. It still isn't the greatest alignment, but I found if I put the red corners further out to the right of the TIF print the squares will stay 'somewhat centered' within the borders of the colored squares and not rest on them.
I also got this screenshot error (attached busted.jpg) but I suspect it was the 2400 DPI RAW scan I tried and Prism Profile would not open it and just crashed. If I try 1200 or less scan, it will open and run.
Needs to be a new "Profile Prism Manual" for this latest version of Vuescan. Profile Prism refers to 'Gamma' and there is none labeled that on this newest version (nor the last few either).
Mack
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« Last Edit: July 04, 2011, 12:30:57 AM by Mack »
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Mack
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« Reply #13 on: July 06, 2011, 04:05:03 PM » |
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Think I solved the walking punch-outs.  I fed the paper into the Canon 9000 Mark II via the front feed which basically is a flat-feed for its printhead. Seems the rear feed upright tray puts their Platinum Pro paper through the rollers and that bending seems to cause an issue with the alignment. The flat-feed worked better for the profiling. I also found if I select "MORE" in Vuescan, I could make it behave much like prior versions. I did check 'On' the "Sharpen" and did 4 passes as default at 1200 DPI and I ended up with only 39 squares as bad, a lot better than the 1800+ I was getting earlier on. I made a profile from that and all seems well now with the Platinum Pro paper. It's a borderline thick paper for the rear feed. Profile Prism liked flat-feed (front) much better for less white punch-outs walking about. I see my final profile results were 0-255, 13-255, 0-255 for the RGB from the profile it made. Don't know why the Green channel is 13-255 as the printer has Magenta, Photo Magenta, and Green ink as well? Least it is working and the density seems very good between the monitor, Qimage Ultimate, and the output from the Canon 9000 Mark II now. Mack |
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