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#1 |
Wizard
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Karma: 300001
Join Date: Jan 2007
Location: Citrus Heights, California
Device: TWO Kindle 2s, one each Bookeen Cybook Gen3, Sony PRS-500, Axim X51V
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A Question of Temperatures!
I recently had someone ask an interesting question. Her question was, what is the operating temperature range of eInk readers? This is a very on-point question as she lives in Mojave, CA, and frequently spends time outdoors when the ambient temps hit 120F or higher - that's 49C for the rest of the world. And another friend of mine lives *and works* in Alaska where he can experience reading conditions at the *other* extreme -50F/-46C!
So, does anyone have experience or knowledge of how the average Sony PRS will deal with these ambient temperature extremes? Derek |
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#2 |
Sir Penguin of Edinburgh
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Karma: 23555235
Join Date: Apr 2007
Location: DC Metro area
Device: Shake a stick plus 1
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Mine did not work the time it fell below about 45F.
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#3 |
I got nothin...
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Karma: 302
Join Date: Sep 2006
Location: Hawaii
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If I take mine to the beach the screen usually craps out after about 30 minutes. The air temp couldn't be more than 85 F, so it must be that the case warms up in direct sunlight. I'm not sure if the electronics don't like it or the properties of the fluid in the screen change, but it is pretty dramatic. You'll be reading and the screen text will lose 90% contrast and white lines will appear in the remaining text. Unusable until it cools down.
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#4 |
Resident Curmudgeon
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Karma: 131375596
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
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Please post what model eink device you are using so we'll know. Thanks!
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#5 |
Wizard
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Karma: 300001
Join Date: Jan 2007
Location: Citrus Heights, California
Device: TWO Kindle 2s, one each Bookeen Cybook Gen3, Sony PRS-500, Axim X51V
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#6 |
Resident Curmudgeon
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Karma: 131375596
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
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It's not yet cold enough for me to test my 500. And by the time it is, I'll be using a 505.
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#7 |
Evangelist
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Karma: 7696
Join Date: May 2007
Location: Turner, Oregon
Device: Sony Reader
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I take mine into a Sauna almost every day, (Dry Sauna) in a Aquapac bag.... I wasn't going to but then I got a second reader for 58 bucks so I thought who cares... Works fine and the temp is 115 to 120.. I think direct Sun messes them up.
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#8 |
Resident Curmudgeon
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Karma: 131375596
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
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Supposedly the Vizplex screen doesn't have the sunlight issue. I'll find out soon. I'm opening the box tomorrow.
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#9 |
Zealot
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Karma: 431
Join Date: Jun 2007
Location: Fruita, CO
Device: Kindle/Nook Color/NST/Acer Iconica
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#10 | |
Connoisseur
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Karma: 37
Join Date: Oct 2006
Location: SoCal
Device: Sony Reader, iLiad, Palm Tungsten T3
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Quote:
I have had no "fade" or breakup problems with the 505 in direct sunlight like I did with the 500. Exposed it for over two hours last weekend to direct sunlight. Ambient temperature was about 74F so the unit did not have both heat and sunlight "stress" at the same time. So Far a significant improvement over the 500. |
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#11 | |
reader
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Karma: 5183568
Join Date: Mar 2006
Location: Mississippi, USA
Device: Kindle 3, Kobo Glo HD
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A similar question was asked about the Cybook at Baen's Bar (E-Book Reader, First Time in Conference thread). Since I can't work out how to link to it from their "improved" forum viewer (which is terrible - I may give up participating at Baen's Bar because it is so bad), here is the reply post by delphidb:
Quote:
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#12 |
Zealot
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Karma: 666
Join Date: Sep 2006
Location: Philadelphia, PA
Device: PRS-505
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I had a slightly disturbing issue on the train this morning. My 505 had been in the trunk of my car on the way to the station, and it was cold this morning. Mid 30s. It was definitely cold to touch when I started it up, and for the first dozen page-flips it was behaving slightly odd, and instead of the quick fade to black, fade out with new page, it appeared to be displaying the two pages at once for a split second and then the second page would appear properly. There was no ghosting left behind, and it was perfectly readable, and then after a dozen page flips, everything returned to normal. Almost as if the Reader was "warming up".
And usually, I'm convinced that the text isn't as black as it can be until I've flipped three or four pages anyway. |
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#13 |
Lowlife of the Party
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Karma: 4038
Join Date: Oct 2002
Location: seattle
Device: nook, iphone
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I just bought my Reader (505, silver) this week, and I've been using it on the train platform to and from work, in temperatures as low as 37°F, without any odd behavior. It may help that I'm only using the device for less than 15 minutes in these conditions, as the train runs (mostly) on schedule. I guess I'll have to follow Bookeen's recommendations, though, when it starts to get colder. Perhaps I can make some kind of insulated sleeve for it, using those little glove warmers that are so popular in Japan.
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#14 |
Member
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Karma: 10
Join Date: Sep 2007
Device: none
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I took my reader into a deer stand with me last week at 25 degrees. I had the same experience as anotherchance did above: the page turns showed both pages at once for an instant, then the second page appeared normally.
The text was also very hard to read for the first couple of pages, but the contrast improved with each page turn. After a dozen pages or so, it seemed to be operating normally. I was a bit concerned that the cold might drain the battery faster than usual, but from what I could tell it didn't make much of a difference. |
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#15 |
Lowlife of the Party
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Karma: 4038
Join Date: Oct 2002
Location: seattle
Device: nook, iphone
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Last night, while waiting for the train in some fairly high winds (outside temperature was probably around 40°F) I noticed the super-slow refresh phenomenon, and it didn't ease up until after I was on the train and the unit had warmed up for a few minutes. I didn't notice any problems with contrast, though. Looks like about 40°F is the unhappy point for my Reader.
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