HP 3055 all in one with line down page

It adds a thin line straight down the page, about 1-1/2 inch from the
side, but not all the time.

It does not print the extra line when I am copying a document that I've
laid on the glass. Also, no line on documents that I send to the
printer from my computer.

It prints the line only when I am copying a document that I've put in
the feeder. The line starts about 3/16 inch from the top of the page,
and stops about 3/16 from the bottom. I have examined the long narrow
glass, and I don't see any dirt on it.

Is this something I can fix?

Regards,

Ham

"Hamish" <doREMOVEot2THIS@earthlink.net> wrote in message
news:mvidnQbIc_b0Q5rVnZ2dnUVZ_hOdnZ2d@earthlink.co m...
> It adds a thin line straight down the page, about 1-1/2 inch from the
> side, but not all the time.
>
> It does not print the extra line when I am copying a document that I've
> laid on the glass. Also, no line on documents that I send to the printer
> from my computer.
>
> It prints the line only when I am copying a document that I've put in the
> feeder. The line starts about 3/16 inch from the top of the page, and
> stops about 3/16 from the bottom. I have examined the long narrow glass,
> and I don't see any dirt on it.
>
> Is this something I can fix?
>
> Regards,
>
> Ham

It could be one of two things; a speck of dust on or inside the glass,
or a defective element in the photosensor array. Check the glass
very carefully with a bright light. If the resolution of the scanner
is 2400 DPI, then a speck 1/1000" across could produce a 2 dot
width black line.

Ian D wrote:

>"Hamish" <doREMOVEot2THIS@earthlink.net> wrote in message
>news:mvidnQbIc_b0Q5rVnZ2dnUVZ_hOdnZ2d@earthlink.c om...
>
>
>>It adds a thin line straight down the page, about 1-1/2 inch from the
>>side, but not all the time.
>>
>>It does not print the extra line when I am copying a document that I've
>>laid on the glass. Also, no line on documents that I send to the printer
>>from my computer.
>>
>>It prints the line only when I am copying a document that I've put in the
>>feeder. The line starts about 3/16 inch from the top of the page, and
>>stops about 3/16 from the bottom. I have examined the long narrow glass,
>>and I don't see any dirt on it.
>>
>>Is this something I can fix?
>>
>>Regards,
>>
>>Ham
>>
>>
>
>It could be one of two things; a speck of dust on or inside the glass,
>or a defective element in the photosensor array. Check the glass
>very carefully with a bright light. If the resolution of the scanner
>is 2400 DPI, then a speck 1/1000" across could produce a 2 dot
>width black line.
>
>
>

Thanks. I wiped the long narrow glass again, and that fixed it. I
guess that the first time I wiped it I missed a tiny little speck.

Ham