HPLIP

photosmart C7280: scan .pnm looks like jpeg?

Asked by Christopher Smith

I have a Photosmart C7280, connected via hp:/net , using hplip 2.7.10.

Scanimage works fine. However when I zoom on a PNM, it looks like a JPEG. Has that ziggy look on sharp edges. I will attmpt to attach one. It was created with

    scanimage --mode Color -x 127 -y 177.8 --resolution 100 > /tmp/blue100.pnm

Here's scanimage -L

    device `hpaio:/net/Photosmart_C7200_series?ip=192.168.198.125' is a Hewlett-Packard Photosmart_C7200_series all-in-one

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dwelch91
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Revision history for this message
Christopher Smith (xcsmith) said : 		#1

Well I can't figure out how to attach a PNM, let me know how if you need it

Revision history for this message
John Hosszu (john-hosszu) said : 		#2

If you would like, you can email the png to me at <email address hidden>.

I'll take a look at it.

Thanks

jh

Revision history for this message
Best dwelch91 (dwelch91) said : 		#3

Unless you change the scan option, the data stream from the scanner is sent
in JPEG format. You can set the option to raw format, which might improve
the scan quality, at the expense of a slower scan.

On Mon, Aug 4, 2008 at 9:36 AM, Christopher Smith <
<email address hidden>> wrote:

> New question #41190 on HPLIP:
> https://answers.launchpad.net/hplip/+question/41190
>
> I have a Photosmart C7280, connected via hp:/net , using hplip 2.7.10.
>
> Scanimage works fine. However when I zoom on a PNM, it looks like a JPEG.
> Has that ziggy look on sharp edges. I will attmpt to attach one. It was
> created with
>
> scanimage --mode Color -x 127 -y 177.8 --resolution 100 >
> /tmp/blue100.pnm
>
> Here's scanimage -L
>
> device `hpaio:/net/Photosmart_C7200_series?ip=192.168.198.125' is a
> Hewlett-Packard Photosmart_C7200_series all-in-one
>
>
>
> --
> You received this question notification because you are a member of HP
> Linux Imaging and Printing, which is an answer contact for HPLIP.
>

Revision history for this message
Christopher Smith (xcsmith) said : 		#4

Thanks dwelch91, that solved my question.

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Christopher Smith (xcsmith) said : 		#5

xsane can do this, and I use scanimage, and I can go in and find out what xsane is doing, but you may just know this: what scanimage option accomplishes this?

I have tried --format raw, which doesn't appear to do anything, and --format xxx, which is also accepted.

Anyway if you happen to know I'd appreciate it if you let me know.
Thanks

Revision history for this message
dwelch91 (dwelch91) said : 		#6

I'm not 100% certain that scanimage can do this. You could try hp-scan,
which does support this option if I remember correctly.

On Mon, Aug 4, 2008 at 10:31 AM, Christopher Smith <
<email address hidden>> wrote:

> Question #41190 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/41190
>
> Christopher Smith posted a new comment:
> xsane can do this, and I use scanimage, and I can go in and find out
> what xsane is doing, but you may just know this: what scanimage option
> accomplishes this?
>
> I have tried --format raw, which doesn't appear to do anything, and
> --format xxx, which is also accepted.
>
> Anyway if you happen to know I'd appreciate it if you let me know.
> Thanks
>
> --
> You received this question notification because you are a member of HP
> Linux Imaging and Printing, which is an answer contact for HPLIP.
>

Revision history for this message
Christopher Smith (xcsmith) said : 		#7

thanks! hp-scan works perfectly.