Skip to main content

I Encounter Halftones Everywhere!

Technically speaking, halftone screens are "tessallations" - patterns that encompass a surface past times the repeated role of a unmarried shape, without gaps or overlapping. And since tessallations are pop decorative items - I terminate upwards seeing halftone screens everywhere. Here are a few from a recent trip to Seattle.

Influenza A virus subtype H5N1 classic Diamond halftone dot
patterns that encompass a surface past times the repeated role of a unmarried shape I come across halftones everywhere!
An illustration of a high lpi traditional Square dot halftone
patterns that encompass a surface past times the repeated role of a unmarried shape I come across halftones everywhere!
In contrast to a real depression lpi Square dot
patterns that encompass a surface past times the repeated role of a unmarried shape I come across halftones everywhere!
Waiting to cross the street I location a mix of 2 halftone patterns patterns that encompass a surface past times the repeated role of a unmarried shape I come across halftones everywhere!
At outset it appears to live a classic Round dot mixed amongst a to a greater extent than subtle Square dot halftone patterns that encompass a surface past times the repeated role of a unmarried shape I come across halftones everywhere!
But on closer exam it seems to live an exotic version of Esko's Concentric screening. Interestingly the pixels that brand upwards this sidewalk halftone are circular instead of the traditional foursquare shape.
patterns that encompass a surface past times the repeated role of a unmarried shape I come across halftones everywhere!
Walking past times this edifice reveals a fine illustration of patterns that encompass a surface past times the repeated role of a unmarried shape I come across halftones everywhere!
Second guild FM/stochastic screening. patterns that encompass a surface past times the repeated role of a unmarried shape I come across halftones everywhere!
Sometimes the lastly halftone enshroud is non visible, simply instead, y'all tin post away come across the foundation for the halftone. Halftone enshroud dots are formed past times a "threshold" array - basically a designing made upwards of 256 shades of greyness which determines which pixels are turned on to shape the actual dot.
The tones of the granite pillar on this building
patterns that encompass a surface past times the repeated role of a unmarried shape I come across halftones everywhere!
Make a bully threshold array to work a patterns that encompass a surface past times the repeated role of a unmarried shape I come across halftones everywhere!
Mezzotint halftone (the correct one-half of the photograph below - click to enlarge)
patterns that encompass a surface past times the repeated role of a unmarried shape I come across halftones everywhere!
Labels:

Comments

Post a Comment

Popular posts from this blog

The Wayback Thought – Sp Plateless Commencement Technology Scientific Discipline Inwards 2000

Recently, J P Imaging, amongst their experimental Miracle Plate* technology, has demonstrated a unique concept – that of switching an uncoated litho ‘blank’ uncoated plate from hydrophobic to hydrophilic. The benefits of this technology, if it becomes a product, is the potential elimination of all chemicals inward plate coating, organic solvents from the coating process, equally good equally all requirements for processing equipment too associated chemistry. It would too convey major environmental benefits past times drastically reducing the need for aluminum inside the printing industry. The annunciation has renewed involvement inward option ways to icon plates for outset lithography. One such option was demonstrated equally a proof of concept at GraphExpo inward 2000. The CreoScitex "SP Plateless Technology" was a plate imaging arrangement where a plate could last imaged, too reimaged, past times spraying an ink receptive coating (Agfa Lightspeed) on it piece the plate wa...
Post a Comment
Read more

The Wayback Stance – Recruiting Press Operators, 1946

Preview images from the video You'll oft run across groups of high schoolhouse students brought to merchandise shows similar Print '09 every bit a agency to unwrap them to a possible career path. This clip is purpose of a 1946 educational cinema that shows diverse trades to students considering postal service didactics opportunities – inward this example the project of a highly skilled press operator. Please press the play arrow to stance the video. Note that it may destination for a mo piece the video buffers inward the background.
Post a Comment
Read more

Using Fm Screening For Ink Savings

The average ink savings yesteryear switching from, for example, a 175 lpi AM/XM halftone to a xx micron FM halftone, is well-nigh 10-15% (depending on the hit of tones inward the master copy art). Since the average sheetfed printer volition pass well-nigh 3-4% of their gross lucre on ink, equally an example, for a $10,000,000 dollar a twelvemonth printer the ink savings using FM screening volition hit from well-nigh $35,000 to $52,500 a year. The reduction inward ink usage for the same terminal presswork appearance, comes primarily from the utilization of a cut-back flexure applied to the FM screened plate, the thinner ink cinema feature of FM screening, in addition to the higher percent of the tonality beingness created optically (optical dot gain) . How higher dot gain saves ink The smaller the halftone dot is, the greater its perimeter to expanse ratio is. Since dot gain occurs at the perimeter of the dot this results inward smaller dots having to a greater extent than dot ga...
Post a Comment
Read more