ink
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Background: Some products, like printers, razors, and coffee machines, rely on a recurring purchase of input materials (ink, razor blades, and coffee, respectively). Frequently, the company that sells the durable part of this system will sell it at cost (or even below!), with the hope of profiting from a hefty markup on the consumables (Figure…
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Background: When printing non-color text on paper, you generally want to print the text as dark as possible, for maximum contrast. Proposal: With this new “two-sided mirror printing” idea, text can be printed darker than is normally possible, with this one trick: the printer automatically prints a mirror image of your text on the opposite…
