
First of all, I show you the scanner/bromograph v. 2.0.
What's new? The mirror under the lamps and another lamp (with its own electronic ballast).
Then I tell you why I throw it...
After testing it, I finally reached the enlightenment (ultraviolet, obviously): there is a system error. Yes, I wanted to be cool and build the first (maybe) thin scanner/bromograph, 'cause I didn't saw any around. Umh... there would be a reason.
The lamps are too much close to the circuit to print (I already know it). As a consequence, close over them, the light's intensity is strong and prevales over the one emitted by the other lamps. In the zone between one lamp and another, a very nice phenomenon takes place: a line (of the test circuit) is projected at least 3 times, with shadows, double lines and bad results (interferences, not too well diffused light...).
A solution could be to put many close lamps to use only direct light, but the main aim, i.e. to "save money and reuse materials" would be lost even if we have a working device (shortly, this system is good: I realized a circuit with a tanning lamp and it came out well and... tanned. And there would be more ballasts, that there aren't and there would be no more space .
The last tests are illustrated below:
- on the left, the one developed close over a lamp, is relatively good, but "burned" in its surface's most part by the direct light (thin lines and words eroded);
- on the right, the one coming from the middle zone: it's cloudy and suffers of the reverberations and shadowing cited before.
After loosing some time, I decided to officially abandon the project and to build a bromograph starting from a wood sheet and using the pieces of this one. The result is coming soon.