Recent content by robb

Don't take the decision too seriously (don't make work for yourself). Any major manufacturer's compressible buffed blanket will do best.

I worked for a wonderful family owned shop-shop started in 1964, I started working for the old man in 1969, and retired after working years with 2 of his kids, in 2019. Watched and helped it grow from 5 employees to 30+ employees, many of whom stayed for 20, 30 years. Loved every minute of it

I believe that the best quality, and greatest operator freedom to attain that quality, comes off a traditional offset press. Anicolor printing has few choices and many limits, good for quick pleasing color.

Mr. Senefelder, A picture is worth a thousand words-I see and agree, why would you transfer sheet before it is fully printed. Only makes sense. About the ductor problem, yes, all roller settings were checked and set, many times. Your question about Why Me on my press, I've been asking...

Good thoughts, good descriptions. I would like to go a little further now about CGS from your PDF report: #1-Why is it important to ensure that the sheet is fully printed before transfer? Is it because a shock streak can appear if the sheet is not fully printed even with correct pre-tension of...

#1-yes #2-no Mr. Senefelder, I respectfully beg to differ-what you refer to can produce a streak, but not the streak I am seeing. Heidelberg press operators and mechanics refer to it as the "Heidelberg Bump", although a more accurate name would be "5o'clock Bump". Old or new, any...

The 7o'clock config is the better choice because the sheet is completely printed before the following sheet enters the nip. This is important because, in the 5o'clock position, you can (will) get a noticeable streak on each sheet, which comes from the sheet following it entering the nip and...

I have to think every offset pressman has run 4-color job with a massive rich deep blue with very little yellow being used-the yellow gets seriously greenish in fountain and rollers in a few thousand sheets. Sornchai, If you are getting only that teeny bit of cyan in your yellow, it will not...

I'm guessing that you are using an ink with dryer retarders (sta-open) in it. If so, that is the problem.

Schnitzel, thank you...I stand corrected. Who'd a thunk it.

The first thing I would ask the client is how old is the swatch they are looking at and is the client viewing the colour in controlled lighting conditions! In fact has the printer done the same! This always gets me..."controlled lighting conditions" do not matter, the swatch and printed color...

Good question-maybe this is a better explanation, from the Sun Chemical PDF: When an ink over-emulsifies, or takes up too much water, it changes its flow properties, with the effect that transference is adversely affected. This leads to the need to run with an excessive ink film (just to...

"So if you think the adjustment of the ink feed is consistent on an offset press but the printed ink goes down to a lower level when increasing water, where did that missing ink go? Does it just disappear?" Eric Eric, you tell me --because I know, as any pressman who pays attention does, that...

That is the F-100 set...

Flint Novavit processinks...dry (cure) fast and hard on all paper stocks...Why?...no drier retarder (sta-open) added...if you are a lazy pressman, this ink is not for you.