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Re: Blurry printing after upgrading from LT v14 .NET to LT v15 .NET
Started by keithway at 05-30-2008 16:09. Topic has 2 replies.

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  05-30-2008, 16:09
keithway is not online. Last active: 5/22/2008 7:59:41 PM keithway

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Joined on 01-09-2007
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Blurry printing after upgrading from LT v14 .NET to LT v15 .NET

Attachment: LT Print Demo Files.zip
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After upgrading from v14 .NET to v15 .NET printed images became blurry. I have attached demo projects to show the issue.

To reproduce the issue, run the demo for v14 and print the supplied sample image. Follow the same steps for the v15 demo. Upon completion, examine the printed paper copies of the image and you will notice the print out from v14 is sharper. This can be easily seen especially with smaller text and numbers. From what I can tell, this is due to differences in the ScaleToGray PaintDisplayMode between the two versions.

Both demos make use of the AnnPrinter object to accomplish printing. After viewing the LT demo for v15 printing, it seems that printing in the demo is now done via GDI calls.

My questions, is how can we continue to use the AnnPrinter object in v15 to print and maintain the same clarity that we have seen with printing in the v14 dlls. Using other combinations of PaintDisplayModes only seems to make the clarity worse.
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  06-02-2008, 5:54
Yasir Alani is not online. Last active: 8/19/2008 2:17:58 PM Yasir Alani



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Joined on 02-05-2007
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Re: Blurry printing after upgrading from LT v14 .NET to LT v15 .NET
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I tested your projects using the latest v14 and v15 patches and you are correct that the print for v15 being blurry.

 

I have reported this as Incident Number: 7019AMN. I will update this post as soon as I hear something back from our engineers.

 

If you want me to update you though email, please send an email to support@leadtools.com and mention this forum post.


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  06-29-2008, 11:15
Yasir Alani is not online. Last active: 8/19/2008 2:17:58 PM Yasir Alani



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Joined on 02-05-2007
Posts 202
Re: Blurry printing after upgrading from LT v14 .NET to LT v15 .NET
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I made some further testing and I managed to get good quality when printing from your project by using the default RasterPaintEngine (GDI+) and not the RasterPaintEngine.Gdi.

Furthermore, when our engineers tested using different printers, they could also get good results with RasterPaintEngine.Gdi engine when they unlocked Document Imaging support. It appears the issue depends on 3 factors:
- The paint engine you use.
- Whether you unlock Document support.
- The printer driver.

We have closed the incident without taking action.


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