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	<updated>2026-05-28T20:52:18Z</updated>
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		<id>https://tfwiki.duckdns.org/index.php?title=Rubsign&amp;diff=91612</id>
		<title>Rubsign</title>
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		<updated>2007-05-05T20:13:10Z</updated>

		<summary type="html">&lt;p&gt;86.88.117.225: &lt;/p&gt;
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&lt;div&gt;A &#039;&#039;&#039;rubsign&#039;&#039;&#039; was a small heat-sensitive sticker that came pre-applied to [[Generation 1]] toys beginning in the line&#039;s second year, 1985. They would reveal an [[Autobot]] or [[Decepticon]] [[faction symbols|faction symbol]] upon being rubbed. The [[Mini Spies]] were the first toys to feature rubsigns. The purpose of the rubsign addition was to help consumers distinguish genuine Transformers toys from the many [[knockoff]]s their success inspired (off-brand versions of the [[Dinobot (G1)|Dinobots]], [[Soundwave (G1)|Soundwave]], and his [[Mini Cassette|cassettes]] were particularly common in 84/85), as well as the [[Tonka Go-Bots]] and other competitors.  A variation on the rubsigns were also used in the spin-off [[Hasbro]]/[[Takara]] toyline &#039;&#039;[[Battle Beasts]]&#039;&#039;.&lt;br /&gt;
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By 1988, rubsigns were dropped from the line (presumably as most of the competition had been long-buried), even though several toys from that year still had molded spots for them.  They would not appear again on &#039;&#039;Transformers&#039;&#039; toys until the second year of &#039;&#039;[[Beast Wars]]&#039;&#039; product in 1997, called &amp;quot;hidden [[energon chip]]s&amp;quot;.  They continued through the next year&#039;s [[Fuzors]] and [[Transmetal]]s, but were replaced by the time of the Transmetal 2s (and in the &#039;&#039;[[Beast Wars Neo]]&#039;&#039; new-mold toys) with &amp;quot;[[spark crystal]]s&amp;quot;.&lt;br /&gt;
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Rubsigns recently were re-re-introduced to the &#039;&#039;Transformers&#039;&#039; line in 2006 with the [[Classics (2006)|Classics]] series.&lt;br /&gt;
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===Operating principles===&lt;br /&gt;
The working part of a rubsign is a layer of Mylar plastic which contains thermochromic liquid crystals.  At different temperatures, the liquid crystals&#039; molecular structure changes, reflecting different wavelengths of light, and making a visible [[faction symbols|faction symbol]] appear.  Mood rings work by the same principle, but have more bogus magical properties.&lt;br /&gt;
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{{stub}}&lt;br /&gt;
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==External links==&lt;br /&gt;
*[http://www.ewh.ieee.org/soc/cpmt/presentations/cpmt0201b.pdf Paper on the uses of liquid crystal thermography, apparently but not actually written by G1 Perceptor.]&lt;br /&gt;
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[[Category:Generation 1]]&lt;br /&gt;
[[Category:Toys]]&amp;lt;div id=&amp;quot;wikia-credits&amp;quot;&amp;gt;&amp;lt;br /&amp;gt;&amp;lt;br /&amp;gt;&amp;lt;small&amp;gt;From [http://transformers.wikia.com Teletraan I: The Transformers Wiki], a [http://www.wikia.com Wikia] wiki.&amp;lt;/small&amp;gt;&amp;lt;/div&amp;gt;&lt;/div&gt;</summary>
		<author><name>86.88.117.225</name></author>
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