But why stop with a eReader? Make a standard tile module with a touch sensitive tactile screen and the skys the limit. four make a monitor, 64 make a tv, 128 make a wall screen. two make a laptop. one makes an eReader. 40 make a beowolf cluster for number crunching. And 512 make that awesome computer thing from "Minority Report" - yeah, I see where your mind is going...
The printers with separate print heads and ink cartridges have a serious problem-- if the printhead runs out of ink the little teeasy tiny microscopic print head resistors blow out, requiring an expensive $40 printhead. On a HP D1xx printer, there are four of these. So the printer signals "ink low" when it's really probably still 1/3 full, just to protect the printheads.
The printers with separate print heads and ink cartridges can get air-bubbles in the plumbing between ink cartridge and printhead if the ink runs low, leading to poor printing and printhead blowouts, so again they thy to err on the safe side.
After having worked in retail electronic sales for about a decade, I can tell you with great confidence that this is exactly right. Most people are much better off with a printer that has the print heads integrated into the cartridge than those that have them independent. When a ink cartridge with an integrated printhead has a problem with it, you replace the cartridge; when you have an independent printhead, you replace the (expensive) printhead; and when a printer with permanent printheads, like an Epson, has a problem with them, you replace the whole machine.
When you have ink tanks with integrated printheads, there's no worry in running them bone-dry, since you're gonna replace them afterwards anyway. Usually those printheads are manufactured to last way longer than the ink ever would, which is why so many retail stores ask you to "recycle" your old ones at the store - those generic store-brand cartridges have traditionally used the printheads salvaged from recycled tanks that test as being still viable. I'm not sure if this is still true in the age of tanks with digital IDs, though.
Oh, and to the guy who thinks the manufacturers are too "lazy" to do the R&D for a new process: after having viewed the HP testing labs, let me tell you, these guys spend a fortune in R&D and testing. It is amazing the things they put some of those printers through.
Of course, that doesn't explain why they still break all the time:)
For Epson owners: run a test print page once a week!!! The VAST majority of problems we addressed with Epsons were directly caused by the printer having been unused for an extended period of time. Usually they could be fixed by running lots and lots of cleaning cycles, but each one uses ink to run. On the other hand, Epsons are perfect for using generic ink, since that's the only thing you're replacing anyway; with most HPs, the lion's share of the print technology is in the printhead that comes with their cartridge.
As far as I can tell, the question here isn't "how does gravity work" but "what IS gravity". General Relativity, the soft flat surface analogy, etc., all seem to explain what the effects of gravity are, how it can be measured, and predicts its behavior. As for what it is - that's a much more fundamental question. I seem to remember reading a Scientific American article just recently that was summarizing new theories on the nature of gravity with respect to string-theory...
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After having worked in retail electronic sales for about a decade, I can tell you with great confidence that this is exactly right. Most people are much better off with a printer that has the print heads integrated into the cartridge than those that have them independent. When a ink cartridge with an integrated printhead has a problem with it, you replace the cartridge; when you have an independent printhead, you replace the (expensive) printhead; and when a printer with permanent printheads, like an Epson, has a problem with them, you replace the whole machine.
When you have ink tanks with integrated printheads, there's no worry in running them bone-dry, since you're gonna replace them afterwards anyway. Usually those printheads are manufactured to last way longer than the ink ever would, which is why so many retail stores ask you to "recycle" your old ones at the store - those generic store-brand cartridges have traditionally used the printheads salvaged from recycled tanks that test as being still viable. I'm not sure if this is still true in the age of tanks with digital IDs, though.
Oh, and to the guy who thinks the manufacturers are too "lazy" to do the R&D for a new process: after having viewed the HP testing labs, let me tell you, these guys spend a fortune in R&D and testing. It is amazing the things they put some of those printers through.
Of course, that doesn't explain why they still break all the time :)
For Epson owners: run a test print page once a week!!! The VAST majority of problems we addressed with Epsons were directly caused by the printer having been unused for an extended period of time. Usually they could be fixed by running lots and lots of cleaning cycles, but each one uses ink to run. On the other hand, Epsons are perfect for using generic ink, since that's the only thing you're replacing anyway; with most HPs, the lion's share of the print technology is in the printhead that comes with their cartridge.
As far as I can tell, the question here isn't "how does gravity work" but "what IS gravity". General Relativity, the soft flat surface analogy, etc., all seem to explain what the effects of gravity are, how it can be measured, and predicts its behavior. As for what it is - that's a much more fundamental question. I seem to remember reading a Scientific American article just recently that was summarizing new theories on the nature of gravity with respect to string-theory...