January 29, 2020

Profiling with Primers and Coatings

In the previous post How to Make an Inkjet Sandwich I talked about the potential different ways that ink can react to a substrate when used in combination with other fluids such as primers or post-coatings. Those interactions make it critical to optimize all the fluids for your entire process, prior to linearization and profiling, to avoid print defects such as color to color bleed and coalescence.
October 8, 2018

Stop the (Ink) Bleeding

Stop the (Ink) Bleeding. Check primed or inkjet coated print for color-to-color bleed/coalescence. Run test images w/ varying solid, single process & combined colors which touch or overlap. Create color areas > 4”x4” to see how ink volume of one image will spread or react to the primed/coated stock when touching another. If only printing pretty bitmap images, bleed effects can be hidden leaving print clarity surprises with solids and touching colors with hard edges.
October 4, 2018

Monitor Cross-Process Variance

Monitor Cross-Process Variance. Run a weekly test print showing solid color bars across the web. Include 100, 75 and 30% individual process color bars of at least 3” depth across the entire web width. Testing will show how well your paper path is controlled and identify any jet or head variation causing solid area defects.
March 5, 2018

Objective Inkjet Measures – Optical Density

This the first in a series of articles by Mary Schilling that will drill down on specific print quality metrics, what they mean, how they are measured and what factors in your printing process can affect them. Optical Density is one of the important quality metrics that can be objectively measured and it can be correlated to a number of other quality metrics.
February 26, 2018

Let Data Drive your Print Quality Comparisons

Mary Schilling discusses objective inkjet print quality comparisons and the benefits of a data-driven approach. Objective print quality analysis provides clear comparative data and removes all personal bias and visual subjective deficiencies when reviewing prints off competing inkjet devices. Inkjet beauty is more than skin deep!
Featured image for “Apparent Resolution – what does that even mean?”
February 5, 2018

Apparent Resolution – what does that even mean?

Contributing author Chris Lynn provides and insightful explanation of “Apparent Resolution”: what it means, how it came to be and whether or not it matters for your application segment when evaluating an inkjet press.
January 22, 2018

How to Make an Inkjet Sandwich

We got a lot of good feedback on Elizabeth’s post on Peanut Butter and Workflow so I thought I would keep the sandwich metaphor going. When using pre-coatings and post-coatings with inkjet, you are creating an inkjet sandwich served on a paper plate. Each layer of the sandwich can make the ink spread and dry unevenly if not managed before profiling, creating a soggy sandwich.
Featured image for “Marco Boer – Apples, Oranges & Inkjet Specs – Video”
November 10, 2017

Marco Boer – Apples, Oranges & Inkjet Specs – Video

Marco Boer of I.T. Strategies discusses specifications that actually tell you something about inkjet print quality – so, yes to gray levels and not-so-much on DPI and number of nozzles.
October 10, 2017

What Inkjet Specifications Can Tell You

…and what they can’t. I posted an open letter to inkjet OEMs last week and got some feedback on the specifications people find most important when comparing production inkjet technology.
August 28, 2017

Components of Inkjet Print Quality

What determines production inkjet print quality? This is a complex question which can’t be answered by simply looking at the published spec sheet for a device. Many OEM’s tout higher
August 10, 2017

Transaction, Transpromo, Transitional Printing – What Matters?

Transaction print, transpromo and transitional print are all ways of talking about segments of the production print market that produce statements, invoices, letters, notices and other important customer communications. The
August 1, 2017

Inkjet Book Printing – What Matters?

Discussion of the key performance indicators (KPIs) and segment definitions that matter when evaluating equipment for inkjet book printing.
Featured image for “Understanding the Gray Areas of Inkjet  – Grayscale”
July 17, 2017

Understanding the Gray Areas of Inkjet – Grayscale

Often people discuss inkjet print quality in terms of dots per inch and the number of colors available, but this is just a small slice of what goes into the discussion of print quality. To get at the heart of quality in the age of ever smaller print heads with more densely packed nozzles, we need to look at the gray areas. Join us for a discussion of grayscale.
June 1, 2017

Understanding Linearization

The key to print quality and color management is controlling the migration of the ink into the paper. The size of the drops jetted along with the pattern which forms upon contact
May 1, 2017

Setting Paper Evaluation Requirements

Before you start any paper trials, know what you’re finished product goals will be and design your trial around them. Paper evaluation needs to consider a broad array of issues beyond compatibility with a specific device. If you don’t consider the big picture, you can waste a lot of time testing papers or miss out on opportunities to save money and improve quality.
March 16, 2017

Premium Customizable Fingerprint Files

Fingerprints are an indispensable way to help your customers understand the benefits of inkjet and the paper selected for a particular job.
March 8, 2017

Diagnosing Cross-Process Density Shifts

If you see any signs of cross-process density shift, get a baseline by running a diagnostic test pattern on a high holdout inkjet coated sheet.
February 22, 2017

Stripes, Solids and Banding – Cross-Process Density

Stripes can be a wonderful design element, but when we see stripes when printing solids, we might call that “banding.” In inkjet terminology, it is more correctly referred to as “cross-process density shift” which is a bit of a mouthful.

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