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Yes, download free software from X-Rite to operate i1pro. Then download free XLS file from Idealliance to measure media wedge.

Can you provide more context? Is this in regard to Idealliance's G7 method? Measuring the dE at the 50% screen tint?

Do these rip marks exactly align up with the front/head stops?

With today's automation and technology (digital), printing is a manufacturing process, using science, very little "craft" or manual labor left. True in prepress and press, less so in finishing (emboss, stamp) and bindery (cut, fold, stitch).

BetaScreen.com Presto instruments

Photos are die cut and don't know direction of press sheet through press. Your "waves" may be roller streaks, bands? Can you show the actual press sheet with gripper edge? How many colors of what, process or spot (Pantone)? If spot, how many hits? To isolate dampening roller streaks from ink...

We seem to never have time to do it right the first time, every time, BUT we always find time (usually over-time) to rerun, remake for a customer rejection. Short-term, temporary, band-aid "Fix" the problem or real scientific method trouble shooting and problem-solving for root cause analysis...

Probability of color deficiency in men is about 1 out of 12, 8%.

The middle photo is NOT hot foil leaf stamp. When you zoom in on the photo, you can still see the paper texture. The dies and pressure would flatten those areas. I agree it looks like gold thermography.

Try to keep the paper grain direction parallel with the backbone or spine. Saddle stitched should be fine because paper is somewhat free to move a little. Hotmelt perfect bound is "locked" in.

Gordo's website does a fine job of explaining the difference. Brightness is just how much blue light is being reflected. It's an optical property. Printers care more about how it runs, no feeder trips in sheetfed, no web breaks, no, no jams (digital cutsheet).

Paper has both physical and optical properties. The physical one's effect functionality, runnability, and printability. These are things important to the printer because they effect productivity and profitability. The optical properties are about appearance, and more important to the customer...

I had some data from newspaper, but that was 37lb (24x36"), .002 mil paper. Looking for an industry benchmark, how many per n/100 rolls? Web breaks do occur!

Hello PrintPlanet, I was wondering if any of the heatset web offset printers can provide any stats on % web breaks? Using older Butler zero speed vertical festoon splicers. Better still, how long are you down before you restart saving and how many feet did that take? Most common basis weight is...

If you number the samples in your photo from left to right, 1-6, there are 3 close pairs. 1 & 5 yellow 2 & 6 magenta 3 & 4 blue Can you provide a Delta E (DE, dE) for those pairs?

The defect you show in the photo is a long vertical streak? Is it visible prior to printing, perhaps as a gloss difference? If you cut the sheet down so you can feed it through rotated 90 degree, is streak still there in the same orientation (machine caused) or did it also move (paper caused)?

Can you provide close up photos, without glare, of good vs bad?

Most modern newspaper press use web offset (cold-set) lithography. The ink transfer from the plate (metal) to the blanket (rubber) then to the paper. If the rubber blanket is damaged, sunken inward, it will not transfer ink from plate or to paper. This is often called a smash or ding.

Whatever method is used, always note the version of the formula fan guide. Over the years, there has been revisions/changes. Mixing the correct formula recipe is no quarantine of a close color match (Delta E) mostly because of the substrate.

Search previous posts about this same topic. Need thick ink film to get opacity. Multiple passes, dry trap, flexo relief plate, UV, silver base, screen print, foil stamp, etc.