XP600 Head Ink Density and Speed Tests Across Resolutions – ARTJET 2026

At first, I didn’t realize how much E-closion slowed things down — but while testing resolutions at different pass counts, I noticed the timing lined up, and realized each E-closion level adds 2 passes.

• 720 x 1080 resolution is normally 6 passes. But printing with E-closion Low adds 2 passes, bringing it to 8.
• It’s a technique that scatters ink where passes meet, so the seam (pass banding) becomes harder to see.
• Depending on image complexity and how well the material’s surface tension lets ink spread, you can choose Low, Mid, or High — each adding 2 more passes, softening the seams and reducing banding, but at a proportional cost in speed.

The X-axis is the print direction, and the Y-axis is the feed direction. Let’s start by looking at an X-axis resolution of 360.

1. 360 x 360 dpi, 1 pass

• When printing an absolute density target to build a profile, the density itself came up short.
• Because of that density shortfall, this mode couldn’t even hold an ICC profile → not usable.

2. 360 x 720 dpi, 2 passes (after ICC work)

• Printing a normal image showed overall low density, and Red and Blue in particular looked noticeably off.
• Since it’s fast, we decided to reserve this mode for line-only output.

3. 360 x 1080 dpi, 3 passes (after ICC work)

• This 3-pass mode was oddly interesting. A normal image looked passable with E-closion Low, but it was hard to use for solid colors.
• Even getting the normal image to print without banding required 5 passes [3 passes + 2 passes (E-closion Low)].
• Not meaningful in practice.

4. 360 x 1440 dpi, 4 passes (after ICC work)

• Normal images weren’t a big problem, but solid-color banding was severe — even with E-closion High (4+6=10 passes), solid-color banding was worse here than in other modes.
• Not meaningful in practice.

5. 360 x 1440 dpi (asymmetric X/Y case)

• Whenever X and Y resolution are asymmetric, color values tend to shift significantly. For that reason, we didn’t run this test.
• Not meaningful in practice.

1. 720 x 720, 4 passes

• Normal images printed without major issues, but solid colors showed banding problems.
• (720x720dpi, bidirectional printing, tested at High and Mid carriage speeds)

  

2. 720 x 1080, 6 passes

• Normal images had no issues, and with E-closion High (adding 6 passes), solid colors were reasonably acceptable.
• (720x1080dpi, bidirectional printing, tested at High and Mid carriage speeds)

  

3. 720 x 1440, 8 passes

• I expected higher dpi to improve things further, but solid colors were no better than at 720×1080 — if anything, they looked slightly worse.
• (720x1440dpi, bidirectional printing, tested at High and Mid carriage speeds)

  

4. Things I noticed while testing

• Comparing unidirectional and bidirectional printing, plain solid colors showed little difference. But for sharp, detailed images or skin-tone portraits, bidirectional printing looked noticeably rougher. In the end, unidirectional mode is the one I’d recommend.
• More than the unidirectional/bidirectional difference, image quality drops sharply if the head height sits higher than the material. Setting the correct print height is essential every time.
• On carriage speed: once stand-off is properly optimized, High and Mid printing quality showed almost no difference — though that assumes the ink is well-matched to the head. Low speed brought a slight improvement but no dramatic quality difference, and it’s simply too slow to be worth using except in special cases (e.g. when material warping forces you to print at a greater height).

Print conditions: bidirectional printing, 600 x 900mm output size.

After printing every test image, timing each output across the whole unit, and running this over three days, here’s the final conclusion.

This is a story from my previous job.

A steel company had asked for a UV printer with custom specs, and we’d delivered a customized unit that they were using happily. About two years later, they visited a competitor and a Chinese manufacturer to purchase two more units. Our company had told them upfront that the price wasn’t negotiable, and they said they’d think it over — this was through their business division head.

Two weeks passed after the meeting with no word, so I called. It turned out they’d already signed with a competitor for two units. Looking back, I wondered if I’d been too complacent as a salesperson…

As the conversation got more technical, it seemed like he’d stopped really listening.

And that’s how I left it.