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could be one of your gripper bars is out of adjustment. Look at the springs to verify none are busted. A gripper bar problem would be every third sheet

Our plate reader has problems reading specta dots. To do this test we will have to use conventional 175 line screen in order to read the plate with the plate reader. I will try and get plates today. Both specta and conventional.

I will see what prepress can do. Do you want the plate pics or do you want the printed sheet pictures?

I spoke with Jen in Prepress and she says our proofer is not Kodak. I was sure it was awhile back when we were using CGS and Oris. We received the USB Microscope and I have been measuring dots on different test plates. I uploaded this file to my Comcast online storage. The left picture is...

We printed a job that we did in January that has a black specta gradient. Back in January when I printed it the specta screen printed almost solid black. Looking at the plate I can see that the Kodak proof does not represent the plate. Just looking at the plate and the proof we can see that...

So we ordered a usb Microscope. JenC is our prepress supervisor. With the loop we are using it appears some kind of slur or noise is in the dot area. We will know more when we get the microscope. We are burning a plate for our GTO to see if the same effect is happening then I will hang the...

If you remove the gear side cover just in front of the double sheet detector is a 3/2 valve. When this valve gets dirty it will give problems you describe in your post. There are four phillip head screws and it is spring loaded so removing the last screw you need to push the cover while...

When it was new it was competing against the Ryobi 3302 and in my opinion it could not compete. A Sir Speedy I knew had one and had problems with the pile motors. I had a C248 and everything about it was bad. Would not register and could not print a decent solid. If it was me I would go with...

Moved Black to unit 4 as a test and this unit is printing a bit cleaner then unit 2 however the print still looks nothing like the proof. I forwarded this thread to our prepress supervisor about the color gamut using specta versus conventional. We are going to have a struggle with this cause I...

Are you using a dot gain compensation curve in plate imaging to normalize your tone reproduction? We are using a G7 P2P target to establish our plate curves. Not sure if this is what you are asking. When I print the P2P target I am able to match the color proof however there is not much Black...

I am running a SM52 5 color with coater. Regular conventional screening at 175 I have minimal dot gain mainly in the black unit. I am running KCMY units 2 thru 5. We use a hybrid screening called Specta and this is run at 300 dpi. I gain heavily on the Black Specta unit (unit 2) where a 75...

I am curious what is Prime sheetfed. Is there something you noticeably gain from using this? I run a QM46/2 as well.

I am a sheet fed guy not a web but uncoated stock keeps getting worse with fillers and brighteners. When I run long uncoated runs my conductance hits the roof. I can run at 1200 micros to 1300 with coated stock all week but can go as high as 1700 running uncoated. I am guessing with web your...

If the AB Dick has the very first dampening system rubber base is all that will run. They used to have a copper roller and the copper roller and the water pan roller inked up. Try running any oil base and you will have toning and plugging real quick. Their next dampening system they called...

Nicoat is a great product. Problem we had was they are also expensive. Most other coatings we found we could get for 40 cents cheaper per lb.

Advance a sheet to the feed board and let the infeed rollers just grab the sheet. Then check your side guide to verify it is square to the grippers and same with the spring side. Make sure your spring pressure is at a minimum. Also remove the brass in feed attachments where the sheet goes...

I fought static all day today on the first pass. This time of year is brutal with no humidity. When you say cover is it gloss or uncoated. Curl up the problem? Try taking a couple of suckers feet off. Just use sucker feet on the outsides and one in the middle and see if that helps. When you...

You will want to use alcohol sub to get rid of the piling on the meter roller. As a temp fix if there is not a guard on the roller use a business card bend into a c and scrape it off the roller as the press is running. Not sure about the knocking sound your hearing. Is the stock curl up...

About a year ago we had a G7 master come to our facility to do the certification process. I am a press operator so I dont want to get too technical so here is my issue. About two months ago our main press operator left (SM52 2006 with pre inking software) and did the re certification for our...

calcium is from the paper not the water. Longer runs of uncoated stock tend to cause more problems then coated. I am guessing four years is about as much as you can ask for. My rollers were 5 years when I replaced them and one ink roller would not even stripe. If all your stripes are good...