Talk:Offset printing/Archive 1

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When spam-alert will be finished on this article, put fr:Offset (imprimerie). Sebjarod 20:29, 30 May 2005 (UTC)

• • • SPAM -- external links lead to Ink Spot Printing. This advertising seems inappropriate.

Our Offset setup Water is sprayed in a fine mist onto a clothed rubber roller which then transfers water to the plate The ink duct is filled with ink and the roller train(used to describe all the rollers that transfer ink from the duct to the plate) carries the ink to the plate. The plate is (in our case) aluminium, with plastic where the image is. The water adheres to the aluminium and the ink adheres to the plastic. The image is then transferred to the offset cylinder, we call it the blanket cylinder because it is a metal cylinder with a thin rubber blanket on it. The image is transfered to the blanket then to paper the appropriate way round.

Hope this helps slightly

Citations & Plagiarism

• • • • WHO CARES??

I have just added a tag to the page mentioning that that there are sources that have not been cited. I was just looking at another website, http://www.compassrose.com/publishing/Offset-printing.html, when I noticed the history sections of Wikipedia and this website are almost the excact same. I am not sure if this counts as plagiarism, but it should be changed (if not, at least cited). I hope that this is the only case in this article, but it should be verified. --64.59.144.21 23:43, 10 June 2006 (UTC)

That website claims it uses it's information from wikipedia. (on the bottom of the website) Dryke 12:42, 21 July 2006 (UTC)

Plagiarim

The paragraph "present day" is literally the same as found on http://businessservices.berkeley.edu/HtmFiles/UCPSOffsetPrint.htm Should it be re-written? Dryke 12:45, 21 July 2006 (UTC)

Yes, it should be.--drew1718 07:47, 22 September 2006 (UTC) ...And it has!--drew1718 08:01, 22 September 2006 (UTC)

Cold press offset

Middletown, Orange County, New York mentions the phrase "cold press offset" which I've redirected here. Can anyone explain what that means? -- Beland 21:00, 30 October 2006 (UTC)

• • • • References web printing, cold web process in contrast to heat-set web printing machinery.

I beleive this a reference to the typesetting. See Linotype_machine for the older hot metal typesetting.198.160.102.41 20:36, 11 December 2006 (UTC)

This won't go away, even if you continue to remove my comments and revert my edits

These links have been consistently removed by a number of editors because -- as they've told you before -- the links violate both WP:LINKSPAM and WP:COI. And after having to dig through the site to find info related to this article, I only found three paragraphs with basic info that adds nothing to this article. Flowanda | Talk 22:06, 11 November 2007 (UTC) Flowanda | Talk 02:39, 12 November 2007 (UTC)

If you would like to discuss why your links should be readded to this article, please add your comments here rather than reverting my edits without comment. It only tends to reinforce the reasons for continued removals. Thanks. Flowanda | Talk 19:23, 16 November 2007 (UTC)

Please discuss instead. Flowanda | Talk 01:28, 18 November 2007 (UTC)

Lebanese

The section on the Lebanese connection on printing seems inappropriate (and is distractingly formatted) Cngoulimis (talk) 22:11, 11 April 2008 (UTC)

This page is void of any up to date information and the moderator needs to be relieved

This page has been audited by me for a few months now and feel that it is time for the current moderator ( Flowanda ) to be replaced or relieved. I feel this person has been completely irresponsible on how they have handled this page over the last few months and has not shown any regard to this page or the information it holds on it. Just have a look at the external links area and you will see a fine example of what I am talking about. No more then 4 months ago the moderator ( Flowanda ) came on scene with no introduction as to who they are and what actions they will be taking and why. They just come on the page and deleted everyone that they felt was not worthy of being on this page. And yet after I come back to this page a few months later after being kicked off very rudely I see that there are links in the external links area that have no real relevance to this article what so ever. further more, I have been very familiar with this page for close to 4 years now and remember an older version page that had more information and pictures on it. What happened to that page version? I would like to inquire as to what the moderators ( Flowanda ) educational credentials are in regards to the printing industry and what makes them feel that they are the proper authority for this position. I would also like to be able to read more about offset printing from the moderators own words to prove to me and the other people they treated so rudely they they are the proper candidate to hold the position of moderator for this page. —Preceding unsigned comment added by 74.51.42.122 (talk) 03:04, 13 March 2008 (UTC)

Who moderator? If there are edit conflicts, we can discuss them here, I'll give my two cents having contributed to this article in the past. No one is or should be considered the moderator of an entry in Wikipedia. DavidH (talk) 21:34, 26 May 2008 (UTC)

Redirect from Printing Plate

I think that there should be a separate page for 'Printing Plate'. I came to this page after trying to find information on specific types of printing plates. Unfortunately the page that should hold that information doesn't exist because of the redirect. 58.175.41.101 06:47, 17 October 2007 (UTC)

Thanks for your comment. I was looking for an explanation of the word "plate" when it is used to identify photographs in books. For example, this photograph is identified as "Plate IX". This article doesn't really explain that meaning, yet Offset Printing plates and Printing plate redirect here. --Jtir (talk) 12:47, 8 August 2008 (UTC)

Offset Printing - Picture

This is blantly an advertisement for MAN Roland, and needs to be changed. If Ira Washington Rubel was the first Offset Printing press, why not put up a picture of that?

In fact, there is a good picture on their website located here: http://historywired.si.edu/enlarge.cfm?ID=395&ShowEnlargement=1 —Preceding unsigned comment added by 204.180.196.10 (talk) 13:44, 9 March 2009 (UTC)

History section of article

I removed the history section, which was added to the article in January 2009, as it appeared to have been copied from http://www.oldtymeoffsetprinting.com/history.htm. I replaced it with a version that was blanked without explanation in 2007, that included text that had been in the article (with changes and additions) since 2004, although more sources are needed and it may need to be checked for accuracy. snigbrook (talk) 15:02, 21 November 2009 (UTC)

Good work —Parhamr (talk) 03:03, 29 November 2009 (UTC)

Over-use of the word surface

The word "surface" is used a lot. It is confusing, as it is not clear what surface is being referred to. Does the author mean "substrate"? Does he/she mean the surface of a printing cylinder, or what? Needs to be clearer.

In fact a number of things are unclear. Take this sentence, for instance: "Rubel discovered in 1901—by forgetting to load a sheet—that when printing from the rubber roller, instead of the metal, the printed page was clearer and sharper." What rubber roller? This is the first time a rubber roller is mentioned! I don't understand any part of the sentence.High king of ireland (talk) 12:44, 15 December 2011 (UTC)High_king_of_ireland 15/12/2011

Description of the Offset process

I'm afraid the description is replete with problems. Ironically, I was OK with the diagram until I read the description. I have pasted the text below, with my comments ALL IN CAPS

The ink duct roller delivers ink from the ink duct to the ink pyramid [WHAT IS THE INK PYRAMID?]. Also called the 'Ink Train'. The ductor roller, sometimes called a vibrator roller due to its rapid back and forth motion, transfers ink from the duct roller to the first distribution roller. It is never in contact with both rollers at the same time. The distribution rollers evenly distribute the ink. The first distribution roller picks up the ink from driving rollers [WHAT ARE THE DRIVING ROLLERS? THIS IS THE FIRST TIME THEY HAVE BEEN MENTIONED. WHERE DO THEY COME FROM?], and the last distribution rollers transfer the ink to the form rollers [WHAT ARE THE FORM ROLLERS? THIS IS THE FIRST TIME THEY HAVE BEEN MENTIONED]. The transfer rollers [WHAT/WHERE ARE THE TRANSFER ROLLERS? THIS IS THE FIRST TIME THEY HAVE BEEN MENTIONED] transfer ink between the ink-absorbing and ink-delivering driving rollers. Driving rollers roll against the distribution rollers and either absorb or deliver ink, depending on their placement [HOW DO THE DRIVING ROLLERS PICK UP INK FROM THE DUCTOR ROLLERS?]. — Preceding unsigned comment added by High king of ireland (talk • contribs) 14:36, 15 December 2011 (UTC)

Yes, I have just tagged this for buzz words and one sentence sections.  I am somewhat familiar with offset printing and web presses, but don't have a clue about some of the jargon.  Someone plase help with this article.   :- ) DCS 07:45, 9 April 2012 (UTC)

I started fixing this article.  Starting by combining sections, pieces of which are spread though out.  I have put all the plate stuff together, I think we have 3 other sections, web, sheet fed, and inks.  I think the pieces in the commercial section can be moved into other subsections where they belong.   :- ) DCS 01:03, 11 April 2012 (UTC)

I have reorganized the whole think.  I think it is logical.  Many sections now have redundant information that needs to be tweaked, and some sections could use a lot more information added, or deleted for now.  I have to quit for the time being.   :- ) DCS 01:40, 11 April 2012 (UTC)

Looks much better. Thanks. Kendall-K1 (talk) 22:26, 22 April 2012 (UTC)

The description of the process is as clear as mud. It's inconsistent and confusing. The section needs a total rework WITH REFERENCES. --71.214.212.109 (talk) 05:37, 19 July 2012 (UTC)

You're probably right, I reorganized a bit, but not much rewriting. We would appreciate any help you could give. Most of us are very busy, but anyone is free to edit.  :- ) Don 20:05, 19 July 2012 (UTC)

References

Missing a lot. I found one book by Bruno, Romano and Riordan. It's called Pocket Pal published by the Graphic Arts Technical Foundation. Have found listing but not book yet. I will look some in an attempt to fix the non-cites. --  :- ) Don 15:25, 29 September 2012 (UTC)

I found:

Pocket Pal: A Graphic Arts Production Handbook

Frank Romano (Foreword)

Michael H. Bruno (Author)

Paperback: 254 pages

Publisher: Graphic Arts Technical Foundation; 20 edition (November 30, 2007)

Language: English

ISBN-10: 0977271617

ISBN-13: 978-0977271610

10 USD used. Don't know who this Riordan dude is. --  :- ) Don 16:01, 29 September 2012 (UTC)

Dry Offset

Someone with more expertise than I have should add Dry Offset to the "Variations" section. Otherwise I could just rewrite what I've found here: http://www.britannica.com/EBchecked/topic/172300/dry-offset http://www.dryoffset.com/dry-offset/what-is-dry-offset-printing.html — Preceding unsigned comment added by 12.158.221.85 (talk) 20:44, 5 December 2013 (UTC)

Insufficient Information On Printing Plate

printing plate redirects here, but I think the article could use a little bit more information on how plates are made, details of which is not expalined in computer to plate either for example.

Computer to plate article mentions laser diodes, but considers it as equivalent to plate preparation methods that are based on exposure to electromagnetic radiation to induce chemical transformation on the plate's coating. However, the mechanism is not exposure but in fact burning, pretty much the same as CD/DVD burning.

Following paragraphs are taken from PrintWiki, the Free Encyclopedia of Print:

All lithographic plates share a common feature: the image areas are rendered oleophilic, or receptive to oils—such as ink—and hydrophobic, or repellent to water, while the non-image areas are rendered oleophobic, or repellent to oils, and hydrophilic, or receptive to water. Consequently, since oil and water do not mix with each other readily, the image areas are transferred to the substrate (commonly by means of an intermediate blanket) while the non-image areas do not.

...

Ablation plates are primarily used in computer-to-plate systems, and consist of digital information controlling laser diodes which burn small holes in a coating applied to the surface of a polyester or metallic plate. Of primary advantage is the lack of chemical processing, which allows them to be mounted and imaged directly on the press.

A type of printing plate used in offset lithography in which the images are burned onto the plate by laser diodes directed by computer data. The plate comprises either a metal or a polyester base, with a thin coating that can be selectively burned by the laser. Its primary advantage is the elimination of a post-exposure chemical treatment. This means that ablation plates can be imaged directly on the press, and that all plates for a job can be produced at the same time and in alignment with each other. (See Plate: Offset Lithography.)

Also, I think giving some details on how the image areas on the plate are rendered oleophilic (or hydrophobic) with the computer-to-plate technology, for example, would make a better article. — Preceding unsigned comment added by 85.110.21.33 (talk) 08:01, 16 August 2014 (UTC)

Xerographic masters

As I understand it, one of the early uses for Xerox machines was the production of masters for offset printing. I don't see any mention of that here, though. Gah4 (talk) 20:43, 19 February 2017 (UTC)

I need a help

Its good Bonneur bisengeta idi (talk) 00:24, 1 March 2017 (UTC)

Where is the other half of this article?

The article section "Offset printing process" states there are five parts (inking system, dampening system...) then only describes the first two.

In the "Plates" section it describes the printing plate in detail, then nothing on the blanket roller, its construction, function, purpose, etc. There is no description of the impression cylinder, its purpose, etc.

Nothing on blanket to blanket press; nothing on web roll automatic loading; nothing on folding/slitting, etc etc. If this makes the article too long then split it. — Preceding unsigned comment added by 97.126.1.15 (talk) 02:06, 3 March 2017 (UTC)