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jokacross
10-14-2011, 05:53 PM
I have a c450 that as been doing this: (see image) 12304 but this only happen when i make photocopies in black, but when printing from computer or photocopying in color mode doesn't occurred this problem. What do you think it is? thanks!

Gort
10-15-2011, 08:06 AM
What is the image supposed to be? Are you copying something or is it a sample of background on a white paper?
If there is an image not printing in black mode you may have a failed black CCD.

jokacross
10-15-2011, 02:48 PM
What is the image supposed to be? Are you copying something or is it a sample of background on a white paper?
If there is an image not printing in black mode you may have a failed black CCD.

Is a sample of background on a white paper!

mrwho
10-15-2011, 03:00 PM
If you make a series of scans (in black and white, grayscale and color), does the problem occur on the resultin PDFs?

jokacross
10-15-2011, 04:19 PM
If you make a series of scans (in black and white, grayscale and color), does the problem occur on the resultin PDFs?

nop! I think not. But im going to test to be sure!

jokacross
10-17-2011, 10:37 AM
nop! I think not. But im going to test to be sure!

I tested now and it is true the image stays blank!

jokacross
10-17-2011, 11:16 AM
Problem solved. I just change the IU and solve the problem. It was a chipped IU that broken in a sudden.

mrwho
10-17-2011, 01:59 PM
Nice. I was going to suggest that, but the fact that it printed OK had me confused.

jokacross
10-17-2011, 04:02 PM
Nice. I was going to suggest that, but the fact that it printed OK had me confused.

to me to. But in fact It did that. The printings in the old IU they was really good compared with photocopies. But I note it that they print the same pattern but was much lighter then when photocoping. thanks a lot

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