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Besides the differences you will encounter due to the press being a perfector, you also need to factor in the differences between the front and back of the paper your printing on. Although not as significant as the perfector differences may be, they should be taken into consideration. I would...

If your looking for the sort of registration that an imaged varnish plate can offer, then I would say forget it. If your content with getting accuracy within 1 millimeter, then thats achievable.

you can use a cad plotter to cut a polyester coating blanket with a bit more precision than an exacto knife. The problem with using a scalpel or exacto knife to cut a rubber blanket with any sort of precision, has a lot to do with the blanket not being under tension if its off the cylinder. If...

Are you certain that the leaking is not the unit cycling through a brief auto dump?

Have you considered dropping out the area you wish to gloss varnish from the matte coating, so that you don't have to worry about trapping and drying over the matte coating?

My preference on any press that rides on bearers, and is using compressible blankets, would be to pack the plate to be even with the plate cylinder bearer, as measured with a packing gauge. I then pack the compressible blanket to print .004" OVER the blanket cylinder bearer as measured by a...

Depends on the structure of the company and the competence of the employees. Ive worked in places where the press crews were not the most experienced, and would require supervision, and color OKs before running. Ive also worked in places where the lead pressman decided when it was ok to flip...

As mentioned, if your yellow was contaminating you would see it on the fountain edges. A little tip.... If your getting ink contamination from previously laid down colors your usually dealing with one of 3 issues. The first possibility would be that your ink (yellow in this case) is too...

very difficult to measure ink film thickness on the sheet. When we talk of ink film thickness it usually has to do with how thick it is on the rollers as measured by a Peto gauge.

not a bean counter so I cant talk on cost, but I can tell you this...These hybrid systems will do both UV and conventional fine but do neither one really well.

Breakaway solids, and a full evaluation of everything printing pressure related, would be the starting point in troubleshooting this problem. I would add.... do NOT trust what is stamped on press plaques or on the back of blankets and packings. Measure everything. When arriving at correct...

perhaps a hair trigger guard somewhere on the press.

Julie, soy based ink has been around, and used by many companies for 20 or so years.

Years ago on a conventional dampening sheetfed I was running I fabricated an air curtain that I hung over the water pan roller. It was a length of cooper tubing with holes drilled on both ends spread out about .75 inch apart. Capped off one end of the tubing and installed a hose barb with a...

list it here

Have you noticed if there is a higher concentration of paper on your blankets around the perimeter of the sheet, or does the entire first blanket get evenly covered with paper lint? If its worse around the perimeter then you could try a couple of different things. You could wipe down all 4...

JUNK

Soy based ink is very common and nothing new to the industry. Alot of its popularity was forced on us by politically motivated do gooders wanting to save the world. In the earliest days of soy based inks i think that they were very poor performers on press. They have gotten much better but i...

There is a disturbing trend in our industry as of the last 15 or so years for companies to do away with a properly trained "pressroom supervisor". Ive seen it pretty often, that the "pressroom supervisor" is a re assigned pre press guy, or production guy, or in the worst case scenario, the...

Actually is you are running a set of properly tacked inks it should be the black with the highest tack.