Solids appear lighter in leading edge

[Yuellig]

1. From the gripping edge, 163mm and 463mm
2. Units 4, pms 542. 5, pms7488 ( the problem) 6, solids of pms 292. Unit 1, 2, 3 are not in use.
3. Have not disengaged #4. I do not believe water is being carried to later units being a.m. only using one other unit prior to this.
5. Have not tried other stock. This is a .012 C1S sbs substrate.

 

[Yuellig]

[No message]

 

[Yuellig]

Water system is segregated.

 

[turbotom1052]

Too small for a densitometer
these are only a 1/2” x 1/2”
optical illusion? No, it’s definitely there

If your densitometer is an Xrite unit you can purchase from Xrite a small aperture that may be small enough to read.

 

[Alois Senefelder]

Yuelig,

Show a GOOD picture of the Print Control Strip that is in line with the "Wash Mark"


Regards, Alois

 

[Manprint]

Did you try printing only 7488 and lowering dampening till it scumms?
Switch units and sequence?

 

[schenkadere]

Does it happen at start up or as the run progresses? Try a new plate. I've seen plate breakdown that looks like that and for some reason it appears first on the finer areas. 7488 may be an aggressive/abrasive ink.

 

[maxon]

Confirm plate dot percentage uniformity with a plate reader top to bottom on plate. Bad uniformity is not uncommon on certain types of platesetters (you didn't say what type of plate and ctp you use).

 

[Lithoman]

The 102 is equipped with a *z* roller,remove it for this run and hopefully solve your problems
Happy printing