transparency printing problems

[teob]

Hello, everyone. I use autocad 2013 and I have a problem in printing transparencies. when I try to print a drawing, if the "transparency print" check is active I print correctly the transparencies of the drawing but the paper space, which I would like not to be printed (I would like to be transparent) is instead printed white. if instead the check is unchecked the white of the paper space is printed as transparent. Why does that happen? Many people I know can safely print the drawings with its transparencies without the white paper space being printed.

further problems I have them with the press formats: by selecting the virtual printer adobe pdf you will find me very few sheet formats and I don't know how to add them. missing for example the format a2, a1, a0 etc. formats that are present in the default printer dwg to pdf.

Finally, for some time to print even a simple a3 with a few lines, the virtual printer in turn takes much more time than it puts until last August, when I printed boards in a1o a0 rather heavy without having time problems.
thanks in advance

 

[PlannerRoad]

Hello, everyone. I use autocad 2013 and I have a problem in printing transparencies. when I try to print a drawing, if the "transparency print" check is active I print correctly the transparencies of the drawing but the paper space, which I would like not to be printed (I would like to be transparent) is instead printed white. if instead the check is unchecked the white of the paper space is printed as transparent. Why does that happen? Many people I know can safely print the drawings with its transparencies without the white paper space being printed....

I don't know what you mean I print white paper space!?

...more problems I have them with printing formats: by selecting the virtual printer adobe pdf you will find me very few sheet formats and I don't know how to add them. missing for example the format a2, a1, a0 etc. formats that are present in the default printer dwg to pdf...

It seems strange to me that he doesn't have these formats. Why not use the autocad dwg to pdf printer? However, the printer is attached to the property key. there you can customize the formats.

...to finish, for a while to print even a simple a3 with a few lines, the virtual printer in turn takes much more time than it puts until last August, when I printed boards in a1o a0 rather heavy without having time problems.
thanks in advance

and is it the same virtual printer? with other virtual printers is there the same problem? It's not easy to answer.

 

[teob]

point 1) with "print the white from the paper space" I mean that if I make a drawing composed of black lines, we say a square, and I insert it from paper space in a sheet a4, I expect from the press to exit a sheet that preserves transparency instead of the sheet white. to understand, if I open this pdf with photoshop, this should open me a file consisting only of the black lines of the square while the white color all around should not be present. This doesn't happen to me when I impose the press with transparency and I don't understand why. .
point 2) also for me it has always been strange not to have, on adobe pdf, the paper formats that instead I have on all other virtual printers but in fact it is so.
point 3) Yes, using the same virtual printers I noticed a terrible slowdown of the operation also to print small files and with few lines. the only thing that has changed since, in August, I printed in a0 without problems is the autocad version. I went from 2012 to 2013 but I couldn't tell if at the time of the version passage I immediately noticed the worsening because I didn't work there for a while. .

 

[PlannerRoad]

point 1) with "print the white from the paper space" I mean that if I make a drawing composed of black lines, we say a square, and I insert it from paper space in a sheet a4, I expect from the press to exit a sheet that preserves transparency instead of the sheet white. to understand, if I open this pdf with photoshop, this should open me a file consisting only of the black lines of the square while the white color all around should not be present. This doesn't happen to me when I impose the press with transparency and I don't understand why. .

You know what that "transparency" refers to. that is related to the transparency of the layers, not to that of the white sheet.

 

[teob]

no, do not confuse them; I tried to express myself to the best I could but obviously I couldn't. I try with even more specific language. Many file formats, such as tiff and pdf are able to keep the alpha channel information, which is the one that associates the transparency to the color that in print is displayed white. In other words, if I open a pdf with appropriate digital file reading programs, such as photoshop, white is not recognized as a colored white pixel, but as a transparent pixel, without a given shade. Thus, doing a layout print, all my paper space should be transparent and should remain colored only the lines of the drawing. this is what normally happens and that also happens to me when the "transparency press" tick is disabled. if instead I activate that check because maybe in the drawing I did a sampling by assigning a transparency to the layer or directly to the single filling, everything I described before does not happen: the press assigns transparency to my sample correctly but the white paper space is printed as a white pixel (this is reflected by opening the print file with photoshop) and I don't understand why, as you say the printing setting should concern the transparency of the layer and not interact with the paper space.

 

[PlannerRoad]

I understand now what you mean.
It was something I had never deepened, and by curiosity I went to practice.
I printed two pdf files of a layout, one with flagged "print transparency" and one no.
imported both in photoshop. identical result: alpha channel information is maintained and therefore the background white of the layout is transparent.
this with autocad 2013 and as a virtual printer used the default autocad.
update the autocad if you didn't do it and try to change virtual printers.

 

[teob]

Before you start, I thank you for the time you're giving me.
coming to the point, I have done a lot of tests and I realized that the only virtual printer that gives me no problem (in the press of the various transparencies, or in the print speed) is that dwg to pdf. The others that I usually use (pdf creator and pdf adobe) are very slow to print very small files and present the problem we have discussed until now for transparencies. so I can say that by printing with dwg to pdf my problems are solved. But now I would like to know why with other virtual printers I have all these problems. we have shown that the problem is not of the autocad program since, printing with its printer, everything works properly. Could the problem be in the peripherals? I don't know how to describe it but since pdf creator and adobe pdf programs work correctly when I open them to work on it, could the problem be when connecting autocad to virtual printers during printing?