Printing on Matrix printer -> letters distorted

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   Hi,
if i print on a matrix printer the letters in the printout are distorted/crackled, it is hard to describe. It's like there is a scaling which is not calculated properly. The same printout on a laserprinter is printing fine.

Do you have any idea? I use quickpdf 7.24 and

  qp.PrintDocument(newpr, 1, qp.PageCount, qp.PrintOptions(0, 0, reportname));

does anyone have an idea?

Thanks,

Martin 

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mortzde Members Profile Find Members Posts Beginner Joined: 13 Aug 08 Status: Offline Points: 2	Post Options Post Reply Quote mortzde Report Post Thanks(0) Quote Reply Topic: Printing on Matrix printer -> letters distorted Posted: 08 Jun 11 at 8:28AM
	Hi, if i print on a matrix printer the letters in the printout are distorted/crackled, it is hard to describe. It's like there is a scaling which is not calculated properly. The same printout on a laserprinter is printing fine. Do you have any idea? I use quickpdf 7.24 and qp.PrintDocument(newpr, 1, qp.PageCount, qp.PrintOptions(0, 0, reportname)); does anyone have an idea? Thanks, Martin

dsola Members Profile Find Members Posts Team Player Joined: 28 Oct 05 Location: Croatia Status: Offline Points: 34	Post Options Post Reply Quote dsola Report Post Thanks(0) Quote Reply Posted: 09 Jun 11 at 12:11PM
	Did You try to print that PDF from Adobe Reader to that matrix printer and compare results? D.
	registered QuickPDF user

mortzde Members Profile Find Members Posts Beginner Joined: 13 Aug 08 Status: Offline Points: 2	Post Options Post Reply Quote mortzde Report Post Thanks(0) Quote Reply Posted: 10 Jun 11 at 8:06AM
	yes, Adobe reader is printing fine. Martin

JanN Members Profile Find Members Posts Senior Member Joined: 29 Oct 05 Location: Germany Status: Offline Points: 116	Post Options Post Reply Quote JanN Report Post Thanks(0) Quote Reply Posted: 15 Jun 11 at 1:22PM
	Please keep in mind, that QuickPdf prints differently than Adobe Reader. QuickPdf renders the pages and then submits an image to the printer. Whereas Adobe really communicates with the printer driver and submits text if possible. Someone correct me please if I'm wrong. EDIT: Printing images on a matrix printer in most cases is a bad idea. Edited by JanN - 15 Jun 11 at 1:23PM

dsola Members Profile Find Members Posts Team Player Joined: 28 Oct 05 Location: Croatia Status: Offline Points: 34	Post Options Post Reply Quote dsola Report Post Thanks(0) Quote Reply Posted: 16 Jun 11 at 9:03AM
	Can You send me that PDF for testing? Regards, Davor
	registered QuickPDF user

BukeMan Members Profile Find Members Posts Beginner Joined: 21 Mar 12 Status: Offline Points: 1	Post Options Post Reply Quote BukeMan Report Post Thanks(0) Quote Reply Posted: 21 Mar 12 at 11:20AM
	hello! is there any progress in that direction? our company just faced the same issue with 9-pin matrix printer. from Adobe Reader it prints fine..

edvoigt Members Profile Find Members Posts Senior Member Joined: 26 Mar 11 Location: Berlin, Germany Status: Offline Points: 111	Post Options Post Reply Quote edvoigt Report Post Thanks(0) Quote Reply Posted: 21 Mar 12 at 1:49PM
	Hi, as JanN wrote: you try to print an image (made by rendering) on a device with very low resolution. Let's assume every line has 4mm high letters on 9 needles, so the printer realizes much less than 72dpi. Thats less as on screen! And in the image, there is not exactly one pixel for every needleposition on paper. Needles and pixels dont match. So it cannot be quality. Its the same as with fax-communication. It is rather sure that adobe goes another (more complicated) way, depending more on the possibilities of use printer. You should think about another way (textextraction, printing without QPL). Cheers, Werner

AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Posted: 22 Mar 12 at 10:46AM
	It could be related to printer driver settings where the default setting are low quality. It may require some work with the DEVMODE structure to set the correct quality settings in the QPL Customer Custom printer before printing. QP.LoadFromFile("PrintDocumentTest.pdf", ""); int op = QP.PrintOptions(1, 0, "Hello World"); string printer = QP.NewCustomPrinter(QP.GetDefaultPrinterName()); int ret = QP.SetupCustomPrinter(printer, 5, 1); // Print Quality = High ret = QP.PrintDocument(printer, 1, MyPageCount(), op);