What are these spots?

[jeff412]

I've got a Roland SP-540V and I am getting these strange spots. Not the black dot, that's just from us marking it as bad. Any idea what they may be?

Jeff

 

[CP Signs]

Dirty media? Doesn't take much, sometimes.

 

[Bigcat_hunter]

I get those once and a while on my Mutoh's. I was told by a tech that it is a humidity issue. They are supposed to run at a certain humidity and you need to purchase a humidifier and a de-humidifier to keep the spots from appearing. I don't get them enough to worry about it though.

 

[SignStudent]

Either something on the media or you're using the wrong profiles for the media, but most likely yeah dirty media.

 

[401Graphics]

id say its the media. i have run my printer in all kinds of humidity ranges, and see no difference. But i have had bad media do this.

 

[jeff412]

Ok. Thanks. I'm out of 3651RA and was using 651 while waiting on my order to come it. That's probably the problem

Jeff

 

[mudmedia]

Bad media...Contamination of some sort from the factory. Contact your supplier they should resolve the issue by doing a RMA on it and send you out a new roll.

Here is the photo of my media when it did that on IJ35.

 

[Gino]

They have digital media and non-digital media for a reason. The digital version has much more care taken when being handled and far less contaminants in/on it. Although you still find problems with digital media, you'll find a great deal more on average die-cut vinyl where inks and paints aren't supposed to come in contact.

 

[jeff412]

Thanks guys. I've got some digital media on order. I just needed a quick print for someone.and didn't have any.

Jeff

 

[Jackpine]

Thanks guys. I've got some digital media on order. I just needed a quick print for someone.and didn't have any.

Jeff

If you have to use 651 in a pinch or some other similar....Wipe it down with denatured alcohol to clean. I
I've printed on non-digital such as etch or diamond plate for special projects.

 

[Gino]

Yeah, sorry...... I'm not saying you can't use non-digital medias, just that is not the intention. So, make sure you clean them super well and the denatured is a good one to use.

 

[jeff412]

That did the trick. Cleaned it real well with alcohol and the spots are gone. Thanks for the help.

Jeff

 

[Ponto]

...used to call those "fish eyes" back in the day........definite cleanliness issue....

JP