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I'm having a problem with the web tearing at the blanket gap on the Page 1 side of the black unit on a Quadstack. We're running Quadstack into Atlas folder, 27.7# newsprint at about 18,000iph. The problem is erratic, and the tears extend along the line of the blanket gap, anywhere from 1/4" into the web up to almost 2" at which point all hell breaks loose in the folder. We found a cut in the Black blanket in that approximate location and replaced it, no change. We have been running the nips on the nose so light they aren't marking the paper at all, and the web has been popping in and out of the back nips. We've been adjusting them to try and get about 1/4' nip marks on each end, but no change so far. The pins appear to be coming all the way through. we recently replaced the whole knife box assembly and the pin strippers.
I'm out of my depth here (not being a web pressman). Any ideas?
Richard Fazakerley - Operations Manager - PPC
Anyone having issues with their water stops not staying open or closed, the new split washers are extremely easy to install and give you back full control. We can now run with them half way open again which helps tremendously with contamination issues on the edge of the sheet.
I had to replace two cable on our roll stand and now the upper roll position works ok, but the dancer will not smooth out its up and down continuously, The lower position gives me alot of trouble, in order to get propper tension the dancer is pinned in the upper position and as the rolls get smaller it snaps the webs. what is the propper way of setting these cables when they need to be changed? both were frayed and it was a matter of time before they broke.
We're running a Quadstack in coldset mode, mostly Newsprint products both Tabloid and Broadsheet. We have recently started getting lines printing across the front and back pages on Tabloids. They are almost always Cyan/Magenta, very thin (one or two dots wide, but rough edged - see attached picture), but under a loupe they do not have the sharp edged look of physical scratches on the plates. To be sure of this we checked the plate punch and the bender for burrs, the CtP was serviced only 2 weeks ago. It does appear that there is a visible build up of what looks like paper dust on the blankets which comes off with blanketwash/water. We are running No-process plates on our CtP, a mild acid fountain solution at a conductivity of 1500 over water and pH of 5.0. Paper, inks, plates and blankets have not been changed but we did recently change over to a new fountain solution that was supposed to run better with No-Process plates. Has anyone else gone through this problem? If so, what was the final outcome?
Richard Fazakerley - Operations Manager
Pacific Publishing Company - Seattle, WA
I am having some problems with my color ink tray on page one side of my quadstack. The yellow tray is showing some cyan ink. So the ink will have green spots in the tray itself. Can anyone tell me what I need to be looking for? I dont see any cyan in the magenta or black trays.
What Fountain Solution are most users using on their quad stacks? We were using Varyx but have not been able to find a good replacement. We currently are having an issue whe we need to sstop for a period of say 10 min or more, when we start the press back up the impression mark prints. In order to get this to go away we have to wash all 24 plates with plate cleaner. We are using a product from Applied Chemistries and it is a a mild acid.
Wondering which perf wheels to order?
We have illustrations. Go to the "Spare Parts" section by clicking in the menu to the left. Then choose either "RTF Perf Wheels" or "Inline Perf Wheels" to open a PDF illustrates the different kinds and their associated part numbers.
We have converted 4 of our Quad Stacks over to the 24 key fountains along with the segmented blades. After calibrating them and running them for a few months, I went back and compared our monthly waste totals against pre 24 key fountain months and our overall waste per month has dropped by between 3 and 4 percent. All of our operators brag on how much easier and quicker the start ups are. Its been a great investment and we could not be happier with the results!!
I am trying to find out what adjustments are avail to re-adjust the sidelay setting on our quad stack my front page can be adjusted to center our cross but our back page can only be brought to about 1/8 of inch from center always leaving the back form not centered any knowledge would be a help
HOW DO I RESET THE PLATE CYLINDERS ON THE QUAD STACK? MY IMAGES TO AND FROM PINS ARE OFF LIKE CRAZY.
September 2015: Ah! Shenango has your curiosity piqued...well here is your answer:
"Shenango" is a term used for a casually employed dock worker. Part time...when he or she is needed. Probably not having employment that is regular enough to pay the bills. So sentence #3 is the closest to being correct.
But I must admit...it was fun turning it into various other parts of speech that truly sounded like they could be correct!
Don't Forget! You can see the PARTS CATALOGS, USER MANUALS, RECOMMENDED SPARES LISTS, & USER TIPS links once you have logged into this forum. Just sign in using the tab above! Call Gail if you can't remember your password...
I am having an issue with smashed blankets on my Quad stack. Page 2 side is constantly smashing blankets. I have tried 3 different brands of blankets and they all seem to be the same. All of my pressures are set correctly. Out of the 6 quads we have running we are seeing a pattern of Quad 1 side 2. Those blankets,not just a certain deck, but on all decks on that side.. Even if the wrap up was on the page 1 blanket the smash is showing on side 2 only....
Does anyone have any problems with the web breaking when the E stop is pressed? If so, whats causing it?
Using the info below and the 2 photos should help you identify the type of ink seal needed for your equipment.
514050 – Web Leader Perfector, Web Leader Quadra Color and Atlas Quadra Color
1514380 – Atlas Perfector and Double Oscillator Quad-Stack
1514390 – Double Oscillator Quad-Stack UV
11001900 – Single Oscillator Quad-Stack
WebPress supplies three main kind of cutting rubbers.
BLACK: These are for use on Atlas folders. They have 8 grooves. Part # 1615080
YELLOW: These are for use on Web Leader folders. They have 6 grooves. Part # 615080
ORANGE: This color is specifically for use with 27" wide webs. Three customers currently order this type. Part # 1615180.
These cutting rubbers all have the same durometer: 85. WebPress does have the ability to offer other durometers if necessary. If you see the need for that, please contact us to discuss.
1a) weekly 1b) monthly 1c) monthly 1d) weekly 2) 1/4" 3) daily 4) replacing jaw blades 5) Atlas knife cylinder adjustment 6) 1,000,000 cuts or 2,000,000 copies 7) every 50,000 copies 8) monthly 9) each time plates have been removed and after cylinders have been wiped dry 10) loosen pivot shaft screws and swing down 11) weekly 12) ink stripes 13) out 14) true 15) false 16) false
How did you do? Be sure to download appropriate pressman manuals if you have questions regarding any of the above. (You'll need to sign in before you can access the download page)
Wondering where the questions are? See our May, 2015 newsletter!
2005 Double Oscillator Q.S.
DYC S5000 Blankets packed .010 total .067 to .068
Anocoil N200 plates, 2,400 dpi, 110 lpi.
Inland Empire 45# / 80brite
Sun Chem/US Ink Quadstack blend UV uni-tack ink / tried using coldset (just to see) and get the same bounce marks.
Rycoline Seven-485S Etch.
Form rollers are set to 3/16" stripe with a durometer of 25 to 28. Running clean, minimal water needed to stay clean.
Did a progressive run, one color at a time. Bounce is in all colors but obviously shows worse in cyan and magenta. This is happening when the blanket gaps meet each other causing a bump in the plate to blanket contact. I haven't stripped all cylinders and checked irons yet, no wraps or any reason to believe have irons change. Last checked them 5+ months ago in the annual strip, clean & set (pull all rollers, blankets & packing. Clean side frames, brackets, cylinder ends, throw-offs etc and check all specs) and all were on target (only re-set them once in 9 years and that was after the 1st 6 months since new). Blankets are torqued with T- wrench at 45 inch-pounds (40 inch/lb on the end bolts), no bolt heads are sticking up or hitting anything.
Set bearers to OEM spec and it made things worse as at that setting the bearers were not contacting each other except at the blanket gap to gap. Re-set using old-school foil method with plates and blankets on and bounce was much better but can't completely get rid of plate-to-blanket cylinder bounce. Don't know how heavy I can pre-load the bearers as they are pretty narrow bearers and don't have constant clean lubrication or wipes on them. Bearers weren't touching except where the blanket gap is and they have shiny spot on the bearers at the gap so it's been bouncing for a while, might have a slight flat spot but can't feel anything by hand and I think my magnetic dial indicator went out in a recycle bin by accident. I"m thinking I might have some bearing wear but with even with that, with the bearers touching it should get rid of most of the bounce. Have always been on a strict lubrication schedule since new so bearings should still be true. Thought I'd throw this out and see if anyone has had a similar problem and might have a suggestion for a solution.
I don't spend as much time on the press as I used to so when I get a chance to operate, I see these things that the guys are numb to in daily use. This particular job is a worse case scenario for problems like this due to full page coverage of fading 4/c blue screen, doesn't usually show in everyday work.
Anybody have any thoughts or suggestions? Would love to hear from the users group.
Hope all is good and the Holidays treat you well.
Randy Leopard, Oregon Web Press, Inc. Albany, Oregon USA
Our UV users have provided us with a list of the supplies and settings they use to successfully print UV. To access the list, CLICK HERE.
Is anyone having the same problems we are seeing? Should the brushes actually be wearing out the pickup roller? we have only been seeing this on our quad stack. We have replaced a couple of the rollers and they currently do not show signs of wear. Maybe there was a design flaw in our original rollers? Our quad was built at the end of 2008. I have attached a photo as well.
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