"He who marches out of step hears another drum." ~ Ken Kesey
From the testing that I have done wax is superior when it comes to edge definition as well as the shape of halftone along with density.
RIP software - this is probably one of my biggest gripes about the I Image and the rip that it uses. The program is based on an old color sep program for the graphics industry, costs very little, and imo is much behind the actual technology of the machines. Even when you preview dots in the rip software you will see the satellites all around the odd shaped dots.
(i image does not print a true clean round dot) and I believe this is due to the rip.
I feel if m&r introduced a much better rip the issues I see with dot/edge quality would possibly go away.
Halftones - from my testing the douthitt wax machine produces a much much cleaner truer halftone.
The wax has the upper hand on tonal transitions as well as fine halftones compared to the ink
Quote from: alan802 on February 11, 2016, 06:17:21 PMAnother question that might help put the puzzle together: Do you do a lot of large runs (1,000+ pieces per job)or smaller jobs (144 and under)?I may only be speaking with the assumption of our I-Image being in the running. Perhaps you are counting all CTS options and that may make a difference for some. For an I-Image, 144 or 1000 is of no consern. In fact 50,000 is of no concern. I don't even relate to how the quantity in the run would make a dif. Even at large numbers, you could post expose and add hardener.
Another question that might help put the puzzle together: Do you do a lot of large runs (1,000+ pieces per job)or smaller jobs (144 and under)?
Quote from: DannyGruninger on February 11, 2016, 07:44:20 PMFrom the testing that I have done wax is superior when it comes to edge definition as well as the shape of halftone along with density.I've done a lot of testing also. Superior is not a word I myself would use. Different yes, but not superior."shape" of a dot (be it ugly or pretty) is irrelevant as it pertains to image accuracy.
Quote from: Dottonedan on February 11, 2016, 06:31:29 PMQuote from: alan802 on February 11, 2016, 06:17:21 PMAnother question that might help put the puzzle together: Do you do a lot of large runs (1,000+ pieces per job)or smaller jobs (144 and under)?I may only be speaking with the assumption of our I-Image being in the running. Perhaps you are counting all CTS options and that may make a difference for some. For an I-Image, 144 or 1000 is of no consern. In fact 50,000 is of no concern. I don't even relate to how the quantity in the run would make a dif. Even at large numbers, you could post expose and add hardener.Has nothing to do with the durability of the stencil. I'm not saying it's a huge part of the equation by any means, but in my opinion the way the CTS machine will be used is very important. If someone needed to air up a football or basketball for their kids a few times a year it wouldn't make AS MUCH sense for them to go out and buy an air compressor and they'd be better off buying a hand pump for $10. I personally think that a shop like the one I run that does 15-30 setups per day might want to invest a little more money on a CTS than a shop that is doing 1-3 setups per day per press and doing large runs. Obviously, the shop doing fewer setups shouldn't concern themselves with gaining a few minutes per setup versus a shop that spends more time setting jobs up than it does actually printing them. A shop like the OP that is doing VERY large runs of the same print could actually save a crap load of money and not buy the high end CTS because quite frankly, they don't need it.
Quote from: alan802 on February 12, 2016, 09:46:45 AMQuote from: Dottonedan on February 11, 2016, 06:31:29 PMQuote from: alan802 on February 11, 2016, 06:17:21 PMAnother question that might help put the puzzle together: Do you do a lot of large runs (1,000+ pieces per job)or smaller jobs (144 and under)?I may only be speaking with the assumption of our I-Image being in the running. Perhaps you are counting all CTS options and that may make a difference for some. For an I-Image, 144 or 1000 is of no consern. In fact 50,000 is of no concern. I don't even relate to how the quantity in the run would make a dif. Even at large numbers, you could post expose and add hardener.Has nothing to do with the durability of the stencil. I'm not saying it's a huge part of the equation by any means, but in my opinion the way the CTS machine will be used is very important. If someone needed to air up a football or basketball for their kids a few times a year it wouldn't make AS MUCH sense for them to go out and buy an air compressor and they'd be better off buying a hand pump for $10. I personally think that a shop like the one I run that does 15-30 setups per day might want to invest a little more money on a CTS than a shop that is doing 1-3 setups per day per press and doing large runs. Obviously, the shop doing fewer setups shouldn't concern themselves with gaining a few minutes per setup versus a shop that spends more time setting jobs up than it does actually printing them. A shop like the OP that is doing VERY large runs of the same print could actually save a crap load of money and not buy the high end CTS because quite frankly, they don't need it. I will say that the stencil durability issue would lie on the fact that CTS does not have to "shoot" through a sheet of glass and a piece of film. This allows for a "truer" exposure and a better stencil as it eliminates 2 variables that can contribute to stencil quality.
Quote from: DannyGruninger on February 11, 2016, 07:44:20 PMFrom the testing that I have done wax is superior when it comes to edge definition as well as the shape of halftone along with density.I've done a lot of testing also. Superior is not a word I myself would use. Different yes, but not superior."shape" of a dot (be it ugly or pretty) is irrelevant as it pertains to image accuracy. It's not the shape of the dot that makes a dot. It's the size of the area that it is to represent that matters. Is that area representing the tone needed... is what should be asked. For example, There are other methods of creating tone that don't make use of or require a perfectly round dot. We have pixel image dots (indexing and stochastic squares), mezzo tint patterns, oval, line patterns, spiral etc.You can illustrate this by imagining dots being replaced with a vector logo. While the logo may not be reproducible at lower percentages and will look more like a blob, as it gets bigger, into the 40% range, it's more visible or recognizable... but we can take the unique and irregular shape of a logo as representing (size of color location) or % area...and still produce full color photo) with color accuracy. So "shape" or a perfect circle or oval is not what is needed to produce color or images well.The DTS machines overall, will produce images on screens using a 600dpi imaging process. This is/has been found to be the most effective output resolution for DTS that can handle this chemistry in a fast pace method jetting out of the heads to produce the image well enough for apparel needs.Most (ink) based machines will produce a bitmapped dot at 600 or 720 dpi that looks (for the lack of a better word), rough. It's % dot is represented by (made up by) the bitmap resolution. It's the same thing that happens when you create halftones in photoshop and convert to bitmap mode and those dots are made up of the squares of the size based on the resolution. So if doing 600 bitmap resolution, you will and you enlarge the preview of that image, you will find that your 1% dots are made up of 1-3 squares trying to form that round shape. At this %, the overall look of that dot is not a dot. It's 2-3 squares but up to each other. Is this rough or jagged? No. It's clean hard edged squares (in the rip) image intended for output. When trying to output this image onto a screen using a dye based inkjet method, we may use( lets use 300-500 sprays of 12-15 picoliter ) sprays. I say that since I don't know for sure how many spits of ink are used... but it takes alott of little jets of ink to form that dot. This should signify at this point how amazing and accurate this process of imaging is considering that all of this being applied to form those 1% dots actually do still look very similar to the 2-3 squares. I think that is amazing. http://www.tuhh.de/rzt/tuinfo/periph/drucker/Color_Reproduktion/halftone_cell.gifNow, lets take that same info above and apply it to wax. You can't achieve that image detail via WAX. It's too viscous to be able to form that precise shape. It can't. So what happens (to the benefit of the visual appearance of the wax dot) is that it forms a clump of wax (that is intended to represent those 2-3 bitmap squares. It's not that it does it accurately, but rather that it does it with inaccuracy...but the result happens to help form a more round shape. The 2-3 squares are unidentifiable due to the thickness of the wax. This then, to us, looks more like a dot than does ink since our ink represent that 600-720 dpi output more accurately. So yes, when you look at a 1% dot with ink it looks rough. It looks like a couple bitmap squares sitting next to each other and the WAX dot looks closer to a round dot. To be more precise, that wax dot actually looks more like a small metier or asteroid. https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRYq3pPDF2c8Ctx1pHIhosVA0cBBs6BGHMLzTaqIMEvs2Ejy5qe1gRWvwOf course it's possible to use a digital printer that can output at 1200 or more dpi but it would not be able to be done fast, nor opaque enough for our needs. Therefore, you get the following result of each:INK, is much less viscous than WAX. INK lays more flat to the emulsion surface than does wax. It's more fluid even though the dye based ink must be very concentrated or opaque as is. when compounded or layered, though the number of passes as well as # of heads, uni or bi, high speed or low speed, you get more versatility or more control options to get the machine to print as you want it to based on your environment and art needs.WAX, when melted, still is more viscous than ink, it's got more volume. When you look at a wax dot under a loop, you will see that it has mass or height like a dot of glue. It's raised up above the surface. You can measure it's height in microns.With that difference, I can state that WAX however small the chance may be, stands more of a chance of producing some form of cast shadow. (Think of exposing a rock). It will have some area of shadow due to it's dimensional form. This may then require you to give more consideration to your light source for exposure. Most people are working with knowledge that we desire a more direct light source for this very reason. For WAX I suspect it's more beneficial than is an ink base. Those that do not have a more direct light source can be susceptible to some form of cast shadows, thus interfering with image accuracy. Think of line work. Cast shadows fattening the line up a little more.QuoteRIP software - this is probably one of my biggest gripes about the I Image and the rip that it uses. The program is based on an old color sep program for the graphics industry, costs very little, and imo is much behind the actual technology of the machines. Even when you preview dots in the rip software you will see the satellites all around the odd shaped dots.I appreciate, value and respect your contribution on this subject. I'd have to say that this is not an accurate statement. You may be confusing color fragmentation in the art with satellite dots.In the RIP program, it can only represent what it is given. For example, if you are previewing any satellite dots, that would have to be coming from the art it is provided. A few examples might be left over separation pull fragments, possibly from pulling background color out of a flattened art file or left over from a scanned image on the outside of the art...or if it's on the edges of actual art, then you are looking at color separation pulled from using the color picker for example. That is not to claim that any of these examples are your cause, but it's been found before. The device, the RIP program can't "create" what is not in the art.Satellite dots (are formed in print on the emulsion) by way of a few other variables. That might typically be from head projection voltage being a little too high as well as/or possibly negative pressure or head temperature. Any of these can be adjusted to fine tune but slight changes in humidity can also play a role. To compare or test this, when you rip a vector logo that was "created" in the vector program, I'm sure you do not see "satellite dots" hanging around areas where there should not be any image. It will be very clean. In vector, the only way that would happen, is if you were to receive customer art that was originally a scan, then not cleaned up...and then converted to vector using some form of auto trace as often seen from overseas jpg to vector conversion houses.Quote(i image does not print a true clean round dot) and I believe this is due to the rip. It's really due to the resolution of the printer and the need for that resolution to produce images onto screen fast and efficiently.QuoteI feel if m&r introduced a much better rip the issues I see with dot/edge quality would possibly go away.It would not, but I also would like to see more features or options.QuoteHalftones - from my testing the douthitt wax machine produces a much much cleaner truer halftone. It produces a more rounded blob that resembles a dot more so than ink does. Therefore, yes. It looks better (to us artist and printers who are accustom to our old film printers at 1200-2400dpi...hen looking at the printed dot on a screen especially under a loop. As you print both of them, (wax and ink dots) onto the shirt, without a loop, the difference is moot, however, if you were trying to reproduce a full color photo to match perfectly, THEN, you would need to use a densitomitor to determine IF your dots are actually printing at the size intended to represent an area of tone. To do that, you would simply calibrate/adjust your curves to reflect what you are reading on the shirt.QuoteThe wax has the upper hand on tonal transitions as well as fine halftones compared to the inkTonal transitions are all about curve adjustment and calibration. The INK or WAX topic is not the issue. It's in the compensation. Now, one thing I myself would like to see in our rip is the ability to add in the curves window, .5 increments and a much larger preview to make those adjustments. It can still be done, but only in the code. Since your printing is excellent, I don't see a need to make 100% more than 100%.
Speed - m&r is faster by a noticeable amount. If your doing under 150 screens a shift though either machine is easily capable of keeping up but with the ste on the m&r handling the screen only 1 time creates a good amount of less work. RIP software - this is probably one of my biggest gripes about the I Image and the rip that it uses. The program is based on an old color sep program for the graphics industry, costs very little, and imo is much behind the actual technology of the machines. Even when you preview dots in the rip software you will see the satellites all around the odd shaped dots(i image does not print a true clean round dot) and I believe this is due to the rip. I feel if m&r introduced a much better rip the issues I see with dot/edge quality would possibly go away