Amara D. Angelica amara at kurzweilai.net
Mon Jun 8 22:21:57 UTC 2015

Neither. It prints ink with specific light-absorption and reflection
qualities. The color is generated in the visual cortex and is partially the
function of the type and intensity of ambient light and surrounding objects.

From:  spike <spike66 at att.net>
Reply-To:  ExI chat list <extropy-chat at lists.extropy.org>
Date:  Monday, June 8, 2015 at 5:53 PM
To:  'ExI chat list' <extropy-chat at lists.extropy.org>
Subject:  Re: [ExI] TECH ANSWER

From: extropy-chat [mailto:extropy-chat-bounces at lists.extropy.org] On Behalf
Of Adrian Tymes
Sent: Monday, June 08, 2015 2:43 PM
To: ExI chat list
Subject: Re: [ExI] TECH ANSWER
On Jun 8, 2015 2:06 PM, "William Flynn Wallace" <foozler83 at gmail.com> wrote:
> Q - does the printer print in black and white?
> A - no - it prints only black - the white is in the paper

Unless it's electronic ink, which prints pixels that can later be black or

Or it is a 3D printer with no paper substrate, in which case the white must
be in what it prints.



Ja.  It also depends on how you define white.  Some substances are
reflective in some frequency bands and absorptive in others.  So ink can be
simultaneously white and black, depending on you how you look at it.


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