[WTF] White Out

[treed889]

So I'm still a newbie for the most part (less than 5 months on the job) workin on copiers but one thing I have never figured out is why does white out leave dark streaks when you use the doc feeder? The light compares the image you scan to a white background judging the color so when it sees a constant white spot should it not register it as a white or blank spot on the page??? just something that puzzles me and thought would get some good conversation.


oh yeah and TGIF!!! have a good one

[vincent64]

So I'm still a newbie for the most part (less than 5 months on the job) workin on copiers but one thing I have never figured out is why does white out leave dark streaks when you use the doc feeder? The light compares the image you scan to a white background judging the color so when it sees a constant white spot should it not register it as a white or blank spot on the page??? just something that puzzles me and thought would get some good conversation.


oh yeah and TGIF!!! have a good one

Welcome to the ranks, if you make it a year, you just may make it, next time you have some w/o on a scan glass, SPF glass, or what ever you call it, take the glass out, flip it over and take a look from the machine point of view, it aint white, and most time is has come off a document, may have some of the ink they were whiting out mixed in there as well.

[blackcat4866]

Yep. After paper has rubbed across that whiteout a few thousand times, it will look somewhere between gray & black.

As an experiment, take some whiteout and a piece of paper and smear it around with your finger. It won't be white. =^..^=

[ToshibaTech]

These things are alien technology. It's the only explanation I have come up with for anything over the years.

[pacman]

These things are alien technology. It's the only explanation I have come up with for anything over the years.

I KNEW IT!!!!!!

[gwaddle]

These things are alien technology. It's the only explanation I have come up with for anything over the years.

I thought they were just magic. That's what I tell the customers.

[treed889]

haha thanks guys i'll have to check that next time instead of just scraping it off.

[ZOOTECH]

These things are alien technology. It's the only explanation I have come up with for anything over the years.

When I can't explain a fix, I tell the customer it's either AM or FM (another miracle or frickin' magic).

[treed889]

haha never thought of AM and FM like that, thats simple and clever.

[10871087]

When I can't explain a fix, I tell the customer it's either AM or FM (another miracle or frickin' magic).

Been around a long time, never heard that one before.

[ZOOTECH]

My original (pat on the back) from 10-15 years ago.

[prntrfxr]

I agree with Blackcat. I believe that whiteout, although white is not reflective. Light is absorbed instead of reflected, and therefore appears as a black line. It hasn't been proven though, so it is a good question. Wonder if we could get a scientist to add the definitive answer to the Wiki Whiteout article?

[mikadonovan]

I think that it uses the white strip to set a reference point as 0, so anything even a little different, including a different shade of white will register a value other than 0 and show up as print.