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#printing

2 posts2 participants0 posts today

TIL that HP 304 and HP 305 ink cartridges are 100% identical in all respects (electrical connections, mechanical dimensions, ink content etc. etc.) - except the model number.

And of course, that means that some printers only accept the 304 type, and some only the 305 type. Guess who bought the wrong kind? 🤬

Fuck HP. I am very tempted to trace out the I2C connection between printer and cartridge, and patch in an uC to overwrite the model number. 😑

Continued thread

If I did re-_renders_ at all these scales, then the full resolution of my text would be preserved, but the background tile text would _not_ be, and I'm pretty sure that would be a not great contrast. My foreground text is already sharper enough as it is. (KCGIS text, it's a... thing. A yikes thing. Like the used a dot matrix printer, but virtual.)

playing around with re-scaling my maps from the public drops

rescaling is just saying "j0, 300 DPI file, you have the same number of pixels but it's 200 DPI now" so 200 DPI is like 50% bigger and 150 DPI is 100% bigger when printed and...

...on a modern printer, 200 DPI is... fine? Like, actually fine? Not as good as actually rerendering but fine. 150's not too bad either.

100 DPI breaks it, but oddly, going all the way down to 72 DPI kind of brings it back around again, because yeah, the words are fuzzy but they're so big it doesn't matter.

So if you just wanted Bigger Map you could easily cut it to 200 DPI and print on a good printer and it would be _fine_. 150 DPI would be okay. Not amazing, but okay.

I’ve been in the #printing business my entire life. Thankfully I never worked for HP (I have worked for two of their biggest competitors, and neither did shit like this)

@pluralistic points out that HP charges 10k/gal or so for ink. I’m in a position where I know the actual cost of that ink - and holy f is this just basically larceny. Profit margin WELL over 90%.

pluralistic.net/2025/02/22/ink

pluralistic.netPluralistic: We bullied HP into a minor act of disenshittification (22 Feb 2025) – Pluralistic: Daily links from Cory Doctorow

Rochester Institute of Technology students are using a virtual reality app to simulate printing on a 19th-century cast iron hand-press that once belonged to British designer William Morris.

The 19th-century Printing Press Experience VR is free on digital distribution platform Steam.

#steampunk #printing

rit.edu/news/rit-app-steam-bri

RITRIT app on Steam brings 19th-century printing to lifeSteam has published a VR app of a historical press that once belonged to William Morris. RIT students and faculty made the app to share the experience.