It is a feed adjustment problem. Execute feed adjustment for the selected media type.
I would try using the rear manual feed (it appears you're using the top one) and see if it repeats. It may, as someone said, be a feed issue. If a head issue, it should happen will all paper types unless something in the driver is screwing up when matte is selected?
Thanks guys I will try execute the feed adjustment when back home and find out how to proceed it on this printer. Any quick link/source how to execute feed adjustment on Canon Pro 1000 please?Just checked service manual online and found nothing about it there. Manual feed was doing the same but maybe with a bit batter result but lines were there too.Thank you.
I have had similar problems with my Canon iPF8400 and doing an automatic feed adjustment has always fixed them. I've never used the Pro 1000 so this may be bad advice but it appears as if the Feed Adjustment for this printer is set by the Media Configuration Tool just like the roll printers.https://support.usa.canon.com/kb/index?page=content&id=ART165904&actp=RSSI hope that helps.
I agree. This does look like a feed issue. Stepping motors can do this. Might be something that gets fixed itself (or not) after a bit of use. In addition to feeding from the back, you can also adjust the vacuum level/head height. Try the vacuum level first. Also you might run many pages through the printer to break in the new printer mechanism. Use a full white image with a narrow vertical but thin black line which will keep the printer from skipping total blank areas but still save ink. just shift the paper left/right so the line prints in a different place each time. You should be able to easily see when the printer feed skips this way.
Special media types are mainly for testing ink density.You can try also to slow down the printing speed by selecting "Higher" printing quality and/or unidirectional printing.
The grain seen near the edge is often caused by curl near the end. You can gently "counter curl" the edge/corners before feeding - it might help. Vacuum strength cannot be set on the Pro-1000 (on or off), so no help there. If heavy paper and it's at the end, not start of the print, you might try placing a support under the paper as it comes out of the printer, as the drop down without support can make a stiff/heavy paper lift/curl/bend near the end where the feed and vacuum mechanism has almost no paper left to hold it at optimally. Using rear feed can also help.