Talk:Laser printer

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Several thousand pages per minute! Any examples? Rich Farmbrough

• When the How it works section was 'moved' to Xerography, much of the other pertinent information was deleted. I edited Xerography to reflect the numbered list and returned the other information back to How it works --Ghaberek
• The IBM InfoPrint 4001 does just over 1000 ppm ... but it's not technically a laser, rather a electrophotograhic printer; cannot find any lasers anywhere greater than about 150 ppm. --69.156.88.203 05:05, 27 Jan 2005 (UTC)
• The IBM Infoprint 4100 does 1220 letter size impressions per minute. Electrophotograhy is a generic term for xerography. Gadget850 19:53, 18 August 2005 (UTC)

Contents 1 Improvement 2 Photoconductor Kit- What its it? 3 Laser printers and ozone? 4 Soft plastic drum? 5 I'm pretty smart, but I can't understand this article 6 Spelling wars

[edit] Improvement

I believe this article could use some improvements:

• Merge Laser printer and LED printer into Page printer.
• Move How it Works section into Xerography.
• Move Secret marks section to Printer forensics.
• Expand the lead in, create History section, Applications section and Technology section.
• Under Technology, include sub-sections on imaging (LED, laser), fuser types (thermal, flash, etc.), feed types (cassette, MP, tractor]], imager types (belt, drum) and color.

Any other thoughts on this, please? --Gadget850 16:31, 14 November 2005 (UTC)

                 ahmed mohsen henedak
   
                                    كلية الهندسة بشبرا

I follow your reasoning, but think Laser printer should stay where it is, and the other two should redirect to it, simply because "laser printer" is by far the commonest name. (Yes, LED is strictly speaking not a laser printer, but it is a variant on the same technology and should be noted as such).

I also don't think it would be wise to move the How it works and Secret marks sections entirely to other pages, rather there should be a simple paragraph explaining the basic function with a Main article: link at the top. (Perhaps this is in fact what you mean.)

Yes, the history section needs to be bigger; I wrote much of it a while ago, but while others have improved upon it, it has not been significantly expanded. Pictures of early models might help.

Agree on your suggestion about Technology, but remember that I think the whole article should stay at Laser printer. ProhibitOnions 16:58, 15 March 2006 (UTC)

[edit] Photoconductor Kit- What its it?

What does the photoconductor kit do? It looks like only Epson printers use/need this.

Ravi

[edit] Laser printers and ozone?

I recently bought a home laser printer. And little did I know, the strange smell coming from the printer as pages were spitting out of it was ozone. (my eyes are all red, and the air feels heavy) I think ozone being released from laser printers/copiers should be noted in this entry, because had I known that laser printers release ozone, I would have had second thoughts about picking up a laser printer. And although I am sure that consumer education isn't the direct intent of wikipedia, it's still significant to note because thousands of laser printers/copiers are being employed and used everyday. What do you guys think? What do you guys think? comment by Stoppedcode12 on 26 Nov 2006

Perhaps, but you have either a maladjusted unit (and probably reduced image quality as a result) or you have placed it in a room that is not adequately ventilated for the printing rate you are achieving. Pzavon 16:10, 26 November 2006 (UTC)

Most modern laser printers produce very little ozone, since they use a charge roller in lieu of a corona to charge the photoconductor, and use a charged transfer roller in lieu of a corona to transfer the image to the paper. The melting of the (usually) styrene resin in the toner can produce a bit of odor, especially if there is minimal air circulation in the room, and the printed page has a particularly large amount of printed area. The manufacturer's specs will usually divulge the amount of ozone that a particular laser printer produces. LorenzoB 18:04, 15 January 2007 (UTC)

The larger laser printers and photocopiers include an ozone remover across the air cooling exhaust port. It is a block of activated carbon that looks like a mesh screen, but the holes are about a half-inch deep to permit reaction time as the air blows through the block. For smaller printers, ozone is not considered enough of an emission problem to include the carbon block filter, but ozone can still build up if you are printing for a long time in a small poorly ventilated rooom.

Google images of printer/copier ozone filters

DMahalko 21:15, 23 February 2007 (UTC)

[edit] Soft plastic drum?

I question the validity of the statement about soft plastic drums and their durability. I believe that all the organic photoconductors in use today (heavy metals are no longer employed) have an image transfer layer. This is the outer coating that actually makes contact with the toner and paper. It serves to protect the actual photoconductor material from wear. It is my belief that from the consumer's standpoint, softness of the drum is irrelevant. The architecture of the developer and the drum cleaning apparatus is more likely to have an effect on the drum's longevity, assuming lack of human 'intervention'. LorenzoB 18:15, 15 January 2007 (UTC)

[edit] I'm pretty smart, but I can't understand this article

Could someone try to translate the "How it Works" section into plainer English for us non-techie types?--EveRickert 06:55, 1 February 2007 (UTC)

The total lack of images and illustrations makes understanding how this works difficult. However, since the images would have to be fairly professional I don't know where they could come from except from copyrighted sources.

Perhaps Hewlett Packard would permit inclusion of images from them if their images were properly attributed, though I've no idea how an individual not formally associated with Wikipedia might go about getting such works added to this page. DMahalko 21:20, 23 February 2007 (UTC)

Haha, I see someone has made an SVG version of my corona charging example image. I do wish you luck redoing the drum-writing one as an SVG. I did a lot of very strange things with layering in Microsoft Word to make it look the way it does. :-) I'd redo it an SVG myself, but not if I have to actually *gasp* pay for an SVG drawing editor. I'm doing this all for free, y'know.. DMahalko 07:50, 20 March 2007 (UTC)

[edit] Spelling wars

I see one editor changed all instances of "colour" to "color" and more recently another editor changed them all back to "colour". I suggest we remember that Wikipedia participants reside in many locations. Some live where "color" is the correct spelling and other live where "colour" is correct. As this is an international effort, neither spelling is truelly incorrect.

Since the laser printer was invented in a region where "color" is correct, there might be an argument for using US spelling conventions. However, the important thing, in my opinion, is to stop wasting time and effort changing between the two conventions. Pzavon 00:37, 16 March 2007 (UTC)