Talk:Image scanner
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[edit] old location
This page is currently at scanner (computing), which uses the Wikipedia disambiguation parentheses, which should be avoided if possible. I think this page should be moved to image scanner, as that more specifically describes what this page is about. It is conceivable one could have a different kind of scanner used with a computer, like a fancy radio scanner. It also avoids avoids using the disambiguation parens. I'm going to move the page now, so I don't have to remember to come back and do it later. If anyone thinks it's a bad idea, feel free to move it back and then explain why you think it's a bad idea. Nohat 07:47, 11 Dec 2004 (UTC)
I think this is a good idea. A real example of a different kind of computing scanner is a barcode scanner. --Rick Sidwell 14:21, 11 Dec 2004 (UTC)
[edit] Inventor
Who invented the flatbed scanner? I found this quote: "CCD flatbed scanner invented in 1975 by Ray Kurzweil". Is it true? Paranoid 10:48, 6 Jan 2005 (UTC) (moved from Talk:Scanner by JTN)
[edit] Microfilm Scanning
Should microfiche/microfilm/hollerith card scanners be included in this article? They are not flatbeds. A microfilm scanner [depending on model] is able to scan 200 frames a minute from 16mm roll film @ 200dpi. If there are no objections, I could add info about these high-production scanners. (I'm referring to scanners made by Sunrise, Mekel, NextScan, Wicks and Wilson, etc.) -DH
- DH, I think you should just go ahead. If it turns out that microfilm scanners or slide scanners or what have you require their own article, the content can always be moved. Do make sure though that no articles already exist for these topics, and make REDIRECTs where necessary.82.92.181.129 15:50, 15 October 2005 (UTC)
[edit] Support question
Not that I think there's any hope, but does anyone know what specifically it means if your scanner progressively starts to warp the colors more and more, til the images scanned become impossibly vibrantly rainbow-colored (despite a white piece of paper being scanned) and having lots and lots of parallel lines all over? Also, if the TWAIN source pascan't be found anymore? ^^'
[edit] SPEED ISSUES
There are some ways to measure a scanners scanning speed but what are they please if someone knows add this info
[edit] City?
"Most scanners today are variations on the city desktop (or flatbed) scanner." What is the meaning of the word "city" in this sentence?" Adam 11:45, 2 October 2005 (UTC)
[edit] Infrared cleaning
I hope nobody minds me moving this section to film scanner, which I just merged. Is this technique/technology used by other types of scanners, possibly drum scanners? Imroy 19:57, 9 February 2006 (UTC)
- It is. I reverted it, but maybe we should shorten the section and have an original page Infrared scanning. --vossman 20:54, 9 February 2006 (UTC)
- There's already a Digital ICE article. Since that's a trademarked name and specific, perhaps it could be renamed and expanded into a more general page. Imroy 21:26, 9 February 2006 (UTC)
- I agree. I thought it was weird that someone created a Digital ICE page.--vossman 22:48, 9 February 2006 (UTC)
- There's already a Digital ICE article. Since that's a trademarked name and specific, perhaps it could be renamed and expanded into a more general page. Imroy 21:26, 9 February 2006 (UTC)
[edit] Resolution claims
My HP PCS 1610 All-in One is advertised as 1200 x 4800 optical dpi, 19,200 interpolated for scanning. It does not perform that way on my Mac. I don't mind that if I select 19,200 it replicates pixels instead of interpolating. What I mind is that it never actually scans at more than 600 dpi.
This scanned image of a feather shows the lack of depth of field (a problem when scanning books) and lighter areas around dark features. Blurring to eliminate the sharpening artifacts indicates an actual overall resolution of around 300 dpi.
So a more honest description is "300 dpi optical (with a sufficiently flat original) and 600 dpi digitally enhanced." David R. Ingham 03:35, 6 September 2006 (UTC)
== What exactly does this speed mean? SCAN SPEED: REFLECTIVE DOCUMENT (1200dpi)- 2.7 msec/line (Line Art), 8.0 msec/line (colour) REFLECTIVE DOCUMENT (2400dpi)- 5.3 msec/line (Line Art), 16.0 msec/line (colour) Can a description of it be included in the article as it speed and quality are features relevent to the page.
[edit] document scanning
I promoted it to a class 2 head, but what it really needs is a separate article. I'm working on some of the publishing pages, such a ebook, and it seems strange there is no specific article. If no objection, I'll use (or modify) the section here as a lead, but I do not have the knowledge to develop the page much further; perhaps someone else would do it better, or has another suggestion.DGG 04:23, 12 October 2006 (UTC)
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- I plan to do it this week if no objectionsDGG 20:24, 15 October 2006 (UTC)
[edit] book scanners
I was under the impression that Google were using a new device. My knowledge on the subject is mainly derived from previous work with JStor , who do things differently. If you do know about the various current devices, it would be a great help if you could expand it. There seem to be relatively few people here who have an exact knowledge of modern printing technology (as distinct from computer technology).DGG 06:56, 26 October 2006 (UTC)
- Printing technology? I think you mean scanning technology. In order to not create a conflict of interest, I refrained so far from doing substantial edits to this and a couple of related articles. I only do edits if there are obvious mistakes, but I don't go in depth. If I did, sooner or later someone would find out and reveal that I am deeply involved in the subject and would try to construct an abuse case out if it. The scanner market is, after all, highly competitive and margins begin to dwindle. Nerves are quite blank at a couple of manufacturers. --Pmkpmk 10:01, 26 October 2006 (UTC)
[edit] book scanners
I will reword my question: does anyone know enough about the Google device for scanning books to say anything? (I mean the physical devices which holds the book and scans the pages, not the related computer programs)DGG 04:19, 30 October 2006 (UTC)
- according to Univ. of Michigan, the scanners as a group (unknown how many) are capable of scanning over 3000 books a day. They're proprietary; no public access is allowed. In short, to answer your question, no. 69.35.100.6 15:04, 6 November 2006 (UTC)
