Heidelburg PrintMaster QM 46 2-color

Does anyone know the total blanket packing for this press?:

 

does anyone know what causes toning?

 

Toning has many causes;
fountain solution too strong,
inks too thinned out,
insufficient dampening,
wrong fountain chemistry.
Are you running a PrintMaster?

 

yes, the boss put new rollers in the front unit and he seems to think the rollers are set right. Well I looked and reajusted the water rollers cause they were out of adjustment. He seems to think that the inking rollers are fine? I use the same formula on my fountain solution on both units. The 2nd unit is fine I can run all colors without toning, however its a no go on the first unit. Could there be a possibility that my inking rollers are carring to much ink and my dampening unit cannot keep up?

 

yes the blanket cylinder undercut is .091 for the printmaster

 

I would start checking all rollers settings. Be sure forms are tight and don't have end play. IF they do, pull bearing and add a couple shims.Start with the forms to the oscillators. Ink up press, then you will need remove 3rd transfer roller to check stripes to oscillators . Stripes from form to oscillators should be 4mm. Then reinstall rollers and check stripes to plate. 3mm stripe on plate. If the stripe to the oscillator is too weak the forms will be driven by the plate rather than the oscillator and it will cause , toning, streaks and emulsification. . You want squeeze between plate and blanket 10-13mm... Best to use a packing gauge and check your squeeze Good Luck