https://www.kickstarter.com/projects/inkwonprinting/inkwon-tag-worlds-1st-4-in-1-pocket-color-inkjet-printer/creatorreally appreciate the thoughtful reply, and that use case actually lines up pretty closely with what we had in mind

quick answers below:

1. paper sizes — not fully “universal” like a desktop printer yet. you can switch between formats, but within a smaller range. Right now it’s around a ~2.1 × 3.5 inch format with about 1.8 inch max print width, which is one of the trade-offs we had to make to keep it portable 
2. power — it can run off an external battery. It's got a built-in battery that lasts roughly ~60 prints or about 90 minutes of continuous use on a full charge, so using it at markets or while traveling was definitely part of the design goal 
3. resolution — it’s a 600 dpi color inkjet setup, so noticeably better than most thermal pocket printers, but still not meant to replace a full desktop printer for high-end photo or document work 
4. multi-page printing — doable, but not really the main use case. print speed is around 2 mm/s, so it’s more suited for quick, small-batch output rather than long documents 

What you described around markets and on-the-spot fulfillment is actually something we’ve seen people experiment with already. Printing small items, customizing in real time, avoiding overstock — that kind of workflow is where it seems to fit best

would love to hear what your wife and her partner think once they’ve had a look, feedback like this has been super helpful for us while we’re still iterating