U of S | Mailing List Archive | alt-photo-process-l | Re: UVPlotter project

Re: UVPlotter project


XYZ table movements are controlled by HiWin precision linear guides with preloaded balls

and Kerk Precision Leadscrews with anti-backlash nuts with a positional bi-directional

repeatability within 0.0013mm, so accuracy should be enough¡

Thanks for your comments


-----Original Message-----

From: Erie Patsellis <erie@shelbyvilledesign.com>

To: alt-photo-process-l@usask.ca

Sent: Sat, 19 Jan 2008 4:23 am

Subject: Re: UVPlotter project

sitgesn1@netscape.net wrote:

There has been a lot of talking about Fresson and I believe John even

suggested to make a machine for direct carbon coating but I should

like to talk about another for me much more interesting possibility.

For alternative photographic process what we should need, I believe,

should be a  digital enlarger that could permit us to print digital

files directly -avoiding negatives- on coated papers using UV light.

I have been thinking about this possibility and I used a lot of my

free time making engineering drawings for implementing this idea but

should like to discuss openly my project with anyone interested in

because the project is too big and expensive for a single person.

Here are some basic details of my project:

-Table size:740x1100 mm=29.1x43.5"

-Maximum print surface: 600x800 mm =23.6x31.4"

-Table movements: x, y z linear guides and step motors


One thing, while at first glance steppers are the ideal motion control

motor, far better performance is obtained. There are numerous step and

direction servo motor controllers that make the intefacing no more

difficult. You will want to ensure that you use preloaded linear guides

and something along the lines of Brecoflex belting instead of lead screws.


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