Straition lines printing in filled areas

Maybe you need to do a Polygon command setting the color. See PCB Creation with Eagle for Beginners : The Ground Plane

There is more about polygon HOW-TO: Polygons and ground fills for PCBs in Eagle | Dangerous Prototypes

clem

Hi, Clem, Thank you for trying to help me.

I believe that I am creating the polygons correctly. The color of the fill is determined by the color of the layer on which the polygon is placed.

The different layer colors are for visualization purposes. To print, I check the black box and everything prints in black. However, the polygons, which are supposed to be filled solid, have striations in them.

Striations are lines of thicker (more ink) and thinner (less ink) ink coverage. The thinner ink lines are prone to cause etching failures.

Eagle uses lines to fill polygons. That is to say that the fill of the polygon, which appears to be solid, is actually created with stacks of lines. When the lines are overlapping properly, the polygon appears, to the eye, to be solid. The fill lines in my polygons are not overlapping properly. So, I need to discover how to fix the overlap.

Thanks for your interest!

Is this an issue? http://www.element14.com/community/thread/17442/l/why-does-eagle-print-everything-thicker

But if you are using a PDF see this http://indesignsecrets.com/when-you-see-thin-white-lines-in-your-pdf-files.php

Clem

t1d

I have downloaded the attached zip file and opened it on eagle checking for the schematics you included in PDF. The point is that the pdf is different than the schematics you attached, as in the image below. Maybe I am wrong interpreting the files? In eagle there is no polygon at all so the only thing I see is that you printed the PCB layout in negative At this point in your negative pdf I see that there are a couple of pads that has something that is not part of the eagle layout at all. No idea if your version of eagle make it automatically but it seems I am seeing two things.

It is not clear what method or script are you using to generate this output layout.

My personal impression is that in the (program? script? some other else?) you are using to produce the printout generates the the disturb in the background because of some bug/issue in the script or in the settings. Initially the issue you mentioned I though maybe depending on the printer but then (see the screenshot above) you can see that seeing the image at this resolution also in the pdf the same issue appears. So it is not the printer but it is the generating application, AFAIK.

In the small detail you can see in this other screenshot I note that there are the pads that has a small straight connection to the rest of the background; this is what I means that the pdf output that you attached is different than the PCB layout. Should I suppose that this has been created by the program you are using for direct printing? Why? How?

Anyway I have put on all the PCB layers and I have not saw this in the design at all.

Take a look to the kind of image I have obtained exporting your pcb as I see it.

If you press the button "Ratsnest" (first one in the last button section, the one with the connected nodes), you will see that the area enclosed by the dashed line will fill up (flood) the free space around the traces and make connections to pads of the same net.

Best,

Herbert

Thank you, Clem, for your continued support. Of the two links you provided:

1) The first identifies a problem of spreading ink, due to using the heat transfer method, when the traces, and their clearances, are very small.

2) The second identifies a problem of striations in the fill, but it only occurs in exported pdf files. The solution was outside of Eagle and with a different method, TBICT. They also increased the dpi, which I have done, prior; I'm using 1200 dpi and still getting the problem. It also happens, regardless of what printer that I am using.

Thank you, Enrico, for your help. Wow, you have some great skills of merging text with pictures that I have never seen on a forum posting. Herbert is correct, when you open the board file within Eagle, you need to activate the RatsNest feature to fill the polygon. You can also use the layer function to manipulate the view, for other various purposes.

Hi, Herbert, thank you so much for helping me. You are correct, in regard to the RatsNest function.

Bertl thans for the info! You don't know but you have saved me a lot of time

Cheers. Enrico

Btw, not sure what your goal is, but if you want something to transfer to your board or present in a document, why not create Gerbers from your layout (File -> CAM Processor) and print them from a Gerber viewer (e.g. gerbv)?

Best,

Herbert