Mechanical Improvements

  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.

Much has happened since my last blog post since, though published only minutes ago, it was written a few days back. This lag between life and blog is largely the fault of flickrfs.

The main change has been rebuilding the printer into new printer's chasis. The wooden arrangement was good to find out what needed doing, but I chopped off much more plastic than I needed to. The first printer was, it turns out, a 2100, and there were a few differences between it and the new 2200dn. The dn was electronically knackered, and wouldn't produce an image, so I used all the parts of the 2100. With the new chassis the printer is more rigid and easier to dis/reassemble as necessary.

As the results of the previous post show, there is much work to do to improve image quality. In my experience laser printers have difficulty printing onto shiny things. Prints onto the acetate we use rarely come out well. Small tracks are largely ok, but big areas come out patchy. As we all know, a PCB is either perfect, or an ornate coaster.  Two solutions spring to mind:

  1. Print twice - the voids are likely to get filled by the next print
  2. Make PCB rough - eg. by pre-etching briefly

Now both of these options clearly suck, but that's what we're stuck with. I prefer option 1, as we're gonna have to get enough repeatability to do double sided boards anyway. Option 2 is horrible because it adds another chemical stage and the board has an enormous surface area, so it oxidises at an incredible speed.

I started working on mechanical improvements to make option 1 viable.

I wanted to add a pair of high-friction driven rollers to keep the board square. The registration unit contains a driven rubber roller and a set of nylon spring-loaded rollers pushing down onto it. Combining the registration units from both printers gave me a pair of sprung rubber rollers, the lower one being driven. I mounted it at the front of the printer. I also added a platform and guide rail to allow boards to fix the lefty-righty alignment.


After this addition, the board fed nice and square each time, but as the trailing edge left the rollers the image screwed up in two ways - there was a little smear where the rollers pinged together kicking the board a little. Also, the image was much lighter for the rest of the print as the back of the board tilted up under the force of the imaging rollers, reducing the pressure at the imaging point. So I added some low friction nylon rollers after the imaging stage to prevent the board from tilting. This got rid of the dodgy greyness, leaving just the smear to fix. 

To fix the smearing issue, I plan to set up a mechanism to lift the sprung rubber roller as the trailing edge approaches. Bit of a faff, but it should be quite nice afterwards.

At some stage I mounted a second guide rail using g-clamps. Whilst it seemed like a good idea at the time I have the tiniest inkling that it may now be causing problems.

I experimented a great deal, but still alignment in the driven axis is a problem. I thought some uncertainty was creeping in as the drive rollers pushed the board into the imaging rollers. I started thinking of ways to start imaging after the board had already passed into the imaging section. Whilst this would waste a couple of inches of board at the top, it may eliminate a problem. Tom had the cunning idea of mounting the leading edge sensor so that it looked at the trailing edge instead. The signal therefore needed inverting, but fortunately it is a photointerruptor that is usually triggered by the absence of a black plastic lever that gets pushed out the way by the board. Thus it could be inverted simply by passing the board through the photointerruptor's gap, removing any uncertainty due to lever wobble.

With this sensor modification repeatability is now good, but not perfect. However, I have an inkling that the second guide fence is the problem. One could imagine that as the driven rollers grab the board, the slightest amount of skew could result in the board binding in the fences and skidding here and there. This wouldn't be a problem with just one fence.

This is an interesting project because so far the trickiest problems have been identified in little thought experiments, rather than by observation. Hopefully the trend will continue.

Images are a little sparce in this post. Did I mention flickrs sucks? 

Submitted by jeff on Thu, 03/08/2007 - 16:44. categories [ ]

I started thinking of ways

I started thinking of ways to start imaging after the board had already passed into the imaging section. Whilst this would waste a couple of inches of board at the top.
web site designer

The most comprehensive and

The most comprehensive and very well thought out ideas I've discovered on this subject online. Continue writing, I will keep on stopping by to read your new articles. This is my 4th time stopping over your site. Gerry from his weblog about the smoothie maker and its role in today's kitchens.

Warranty Void if Removed | Collected technological projects

These are in fact great ideas in regarding blogging. You have touched some fastidious things here. Any way keep up wrinting. Also visit my weblog healthapix.apigee.com

Nice and very informative

Nice and very informative and interesting post . I really enjoyed this article.essay writing

Nice and very informative

Nice and very informative and interesting post personal statement residency

Warranty Void if Removed | Collected technological projects

Hello There. I discovered your weblog the use of msn. This is a very well written article. I will be sure to bookmark it and come back to read more of your useful information. Thanks for the post. I'll certainly return. My website - InstaCleanse FX

online writing service

Whilst this would waste a couple of inches of board at the top. online writing service

Warranty Void if Removed | Collected technological projects

Nice respond in return of this question with solid arguments and telling everything on the topic of that. Review my blog ... Lmage

The 2012 X-Fire in the

The 2012 X-Fire in the picture is a bit misleading; obviously some of the problems that you were having wouldn't be present in the 2012 due to the internal routing of the cable, and the fact that the front derailleur cable comes up through the frame and eliminates the need for an external pulley. jogo de damas

Apparently, spitfire

Apparently, spitfire connecting rods can be easily and effectively lightened on a standard lathe. Since I have access, I might as well machine these to be a bit lighter. I may also look into a lightened flywheel as well. frases para orkut

Students look for term paper help

This is a case of a talent to deliver such a quality of writings. I will surely use certain amount of personal statements given here as a considerable term paper help. Happy to find one more like-minded person.

Warranty Void if Removed | Collected technological projects

Hello, i believe that i saw you visited my website so i came to go back the want?.I am attempting to in finding things to improve my web site!I assume its good enough to use some of your ideas!! my web page: melanin

Re

I setup 2 styles in Ketchup for my models. One is full color with textures, and the other is black/white. Then in Layout, I render the floor plan views with the black/white version in vector mode, and the elevations in full color in hybrid mode. This helps speed up the rendering time mensagens de amizade on each page.

Re

From one of the leading experts on college students, Chuck Bomar, World’s Apart gives us a solid, clear and empowering resource for coming alongside these emerging adults. When I want to learn about college students, I read Chuck frases de aniversario.

From one of the leading

From one of the leading experts on college students, Chuck Bomar, World’s Apart gives us a solid, clear and empowering resourceaffordable engagement rings | wedding sets

Warranty Void if Removed | Collected technological projects

Awesome post. ?ere is m? web p??e: droni professionali migliori

re

This is a case of a talent to deliver such a quality of writings.Resume writing service | cv services uk

RE

I had decided just to get hens as I didn't need a male and I was going for maximum efficiency in egg production. As they young when I got them, medical school personal statement

I had decided just to get

I had decided just to get hens as I didn't need a male and I was going for maximum efficiency in egg production. As they young when I got them, medical school personal statement

Warranty Void if Removed | Collected technological projects

Do you have a spam problem on this website; I also am a blogger, and I was wanting to know your situation; we have created some nice practices and we are looking to swap methods with other folks, why not shoot me an e-mail if interested. Also visit my blog post; Lorella Skin

Warranty Void if Removed | Collected technological projects

You're so cool! I do not suppose I have read through anything like this before. So nice to discover somebody with some original thoughts on this subject matter. Really.. many thanks for starting this up. This website is one thing that is needed on the internet, someone with some originality! Feel free to visit my weblog natural weight loss reviews

Warranty Void if Removed | Collected technological projects

What's Taking place i'm new to this, I stumbled upon this I've discovered It positively helpful and it has helped me out loads. I hope to contribute & aid other customers like its helped me. Great job. My weblog: First Treatment Essence skincare

Warranty Void if Removed | Collected technological projects

I'm no longer sure where you're getting your info, however great topic. I must spend a while finding out much more or figuring out more. Thanks for excellent information I used to be in search of this information for my mission. Also visit my homepage ... Megadrox testosterone boosting supplement

Warranty Void if Removed | Collected technological projects

Simply desire to say your article is as astounding. The clearness to your post is just great and that i can suppose you're an expert on this subject. Well together with your permission let me to seize your feed to keep updated with forthcoming post. Thanks one million and please carry on the rewarding work. Feel free to surf to my web site: colon cleanse supplements

Warranty Void if Removed | Collected technological projects

magnificent issues altogether, ?ou simply gained ? emblem new reader. What may you recommmend a?o?t yo?r publish that you just mad s?me days in the past? Any certain? ?lso visit my web-site - Drone Telecomandato Professionale; Droniprezziblog3.Wikidot.Com,

Warranty Void if Removed | Collected technological projects

The city of Dublin played host to the 1st st patrick's day t shirt designs. Patrick's Day parade in Ireland, held in 1931.

writing companies wikipedia

writing companies wikipedia really loved reading your blog. It was very well authored and easy to understand. Unlike additional blogs I have read which are really not tht good. I also found your posts very interesting.

re

Paddlefish can grow to be larger than most other fish that are normally stocked in recreational porsche deals waters and are therefore quite noticeable when they surface. Table 5 shows how often the lake/pond owners noticed the fish surfacing in their waters.

Warranty Void if Removed | Collected technological projects

Howdy! I could have sworn I've been to this site before but after reading through some of the post I realized it's new to me. Anyways, I'm definitely happy I found it and I'll be book-marking and checking back often! Feel free to surf to my blog protein shakes

Warranty Void if Removed | Collected technological projects

Can I simply say what a comfort to uncover someone who truly knows what they are discussing on the net. You certainly realize how to bring an issue to light and make it important. More and more people should read this and understand this side of your story. I can't believe you are not more popular because you most certainly have the gift. Feel free to surf to my site - Regan

Warranty Void if Removed | Collected technological projects

Fantastic beat ! I wish to apprentice at the same time as you amend your site, how could i subscribe for a weblog site? The account helped me a applicable deal. I have been tiny bit acquainted of this your broadcast provided bright clear concept my webpage - Healthe Cleanse healthy weight loss

Warranty Void if Removed | Collected technological projects

This piece of writing is really a nice one it helps new net users, who are wishing for blogging. Look into my web site Colon Flush 365 natural weight loss

Warranty Void if Removed | Collected technological projects

Hi! Do you know if they make any plugins to help with SEO? I'm trying to get my blog to rank for some targeted keywords but I'm not seeing very good gains. If you know of any please share. Many thanks! my weblog: Living Without Carbohydrates

writing companies wikipedia

writing companies wikipedia really loved reading your blog. It was very well authored and easy to understand. Unlike additional blogs I have read which are really not tht good. I also found your posts very interesting.

Hi

completely insulated. When Solomon began playing the piano, when we play the one he played the record, we have immediate access to an elegant and bright and clean artistic atmosphere. Here, everything is clear, transparent, essay editing services

Service That Provides the Best Custom Essays

It is a new information for me that the main change has been rebuilding the printer into new printer's chasis. The wooden arrangement was good to find out what needed doing, but I chopped off much more plastic than I needed to. The first printer was, it turns out, a 2100, and there were a few differences between it and the new 2200dn. buy essay paper online

Warranty Void if Removed | Collected technological projects

Hi to every body, it's my first visit of this web site; this webpage includes awesome and really good information for visitors. My blog post :: Replennage Anti Aging

Warranty Void if Removed | Collected technological projects

When I initially commented I clicked the "Notify me when new comments are added" checkbox and now each time a comment is added I get three e-mails with the same comment. Is there any way you can remove people from that service? Appreciate it! Here is my web site ... Nitro Cleanse supplement

Warranty Void if Removed | Collected technological projects

I have been exploring for a little bit for any high quality articles or blog posts in this kind of area . Exploring in Yahoo I finally stumbled upon this site. Studying this info So i'm happy to express that I've a very just right uncanny feeling I came upon just what I needed. I such a lot indubitably will make sure to do not omit this web site and give it a look regularly. Here is my homepage :: Novacare Serum

Warranty Void if Removed | Collected technological projects

Very quickly this site will be famous amid all blogging users, due to it's fastidious posts Take a look at my site: Bella Gold youthful eye serum

Warranty Void if Removed | Collected technological projects

Wow! Finally I got a website from where I be able to truly obtain useful information regarding my study and knowledge. Feel free to surf to my web page Luminous Beauty

Warranty Void if Removed | Collected technological projects

I think this is one of the most important info for me. And i am glad reading your article. But wanna remark on some general things, The website style is ideal, the articles is really excellent : D. Good job, cheers Here is my website ... FocusNutra Intelligex

Warranty Void if Removed | Collected technological projects

I wanted to thank yoou fo? th?s excelllent read!! I ?ertainly loved ?very bbit of it. ?'v? ?ot y?u bookmarked to check outt ne? stuff ??u post… m? blog post - droni professionali topografia

Warranty Void if Removed | Collected technological projects

Wonderful article! This is the kind of information that are supposed to be shared around the net. Disgrace on Google for now not positioning this put up upper! Come on over and consult with my site . Thanks =) my blog Dark Spot Remover

Warranty Void if Removed | Collected technological projects

I loved as much as you'll receive carried out right here. The sketch is tasteful, your authored material stylish. nonetheless, you command get bought an shakiness over that you wish be delivering the following. unwell unquestionably come more formerly again as exactly the same nearly very often inside case you shield this hike. my web page harga ps vita