Vector Lines with sawtooth lines when printed

[CactusCindy]

Hi. I have been using Affinity Designer for my small screen printing business since 2016. I have the Epson ET-8550 printer. I use this and Affinity to make transparencies to make silk screens. I used to use V1 but bought V2 a few months ago because V1 was acting up.

I an experiencing trouble I did not used to have with some of my vector lines getting a sawtooth edge to them only when I print them ontl my transparencies. The sawtooth is not visible on my iMac screen even if I zoom in really close.

All of my lines are Vector lines. Some ore done with vector brushes and some ore done with ellipse, square type tools such as borders or hirizon lines in my designs. The borders and straight lines are giving me the worse problems.

My Document setup is only allowing a maximum of 400 dpi now after the most recent updates.

My setting are 400 dpi to scale of 317.5 mm x 381mm or  5000 x 6000 pixels

My Epson ET-8550 says it has a maximum output of 5760 x 1440 optimised dpi (with Variable Sized Droplet Technology)

Any help of suggestions would be greatly appreciated. I have been trying to figure this all out on my own but am getting nowhere.

Included is a photo of the image on my screen zoomed in. There are also photos of my transparencies I have printed on. I cannot use such sawtooth lines in screen printing! Thanks and I hope someone can help me.

77E0C779-C48B-4D27-99B9-A1A67DA742B9.heic 70E6B21F-4445-4A66-8BB3-BDC96598B91C.heic E143B6E2-D6F6-4876-91CB-25677FD65761.heic

[carl123]

3 hours ago, CactusCindy said:

My Document setup is only allowing a maximum of 400 dpi now after the most recent updates.

The drop-down selector only allows you to select up to 400 dpi but you can type in any number you want manually

[CactusCindy]

Yes I did type in higher resolutions but am still having problems.

[NotMyFault]

In Designer, activate view mode „Pixel“ to get a more realistic preview. Printers don’t use vectors, but rasterized files where vectors are rendered into the pixel grid.

You must try to use the exact printer resolution, otherwise resampling artifacts will cause blurriness at edges.

In addition, the export options used will impact if edges will look pixelated or smooth. Export resample method bilinear and anti-aliasing of vector layers will smoothen the sharp edges. You may have changes the setting to nearest neighbor or AA off.