plustek: Thread: HP2200C

Hello All,
After upgrading to kernel 2.4.18 the USB plustek/hpscanner works !!! and
produces VERY fine images (thanks !!!!)
 (kernel 2.4.16 and Sane 1.08 gave, besides the lamp
and some initial steppermotor movement, nothing but hard system_lock_ups).

There are a few things that worry me :
there are high pitch "squeeek" sounds from the steppermoter on
initiation/calibration.  After that scanning is somewhat like two steps
forward ,one step back (the table is almost shaking....) so no smooth movement
even at 50 dpi. The return is normal and smooth...
Under WinXP these problems do not exist , but who cares....
The lamp does not shut down after scanning (no matter what I put in the
plustec.conf ) But that is no real problem. (after unloading the usb-uhci
module, it has to go out anyway)
Is there by any chance a way of altering "some values"
to get this stepper motor working smoothly?

sjonnie te Linde

lsusb:
  Language IDs: 0000
Bus 001 Device 002: ID 03f0:0605 Hewlett-Packard 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass         0 
  bDeviceProtocol       255 
  bMaxPacketSize0         8
  idVendor           0x03f0 Hewlett-Packard
  idProduct          0x0605 
  bcdDevice            1.00
  iManufacturer           1 
  iProduct                2 HP ScanJet 2200C
  iSerial                 0 

On Fri, 5 Jul 2002 21:25:29 +0200  sjonnie wrote:

> there are high pitch "squeeek" sounds from the steppermoter on
> initiation/calibration.  

I wonder if the calibration is working properly, because the scans from
my HP2200C look very underexposed to me, and have to have a big gamma
correction which messes up the overall colourspace.


>  After that scanning is somewhat like two steps forward ,one step back
>  (the table is almost shaking....) so no smooth movement even at 50
>  dpi. 

Mine does not do this, the scan is smooth.  I have kernel 2.4.18-6mdk,
(Mandrake 8.2) which found the 2200 as soon as it was plugged in, no
problems.  I wonder if you are loosing data in the USB transfer so the
scanner is forced to rescan?


> The lamp does not shut down after scanning (no matter what I put in the
> plustec.conf ) 

The Plustek backend tries twice to turn off the lamp, but fails:
   [plustek] sane_exit
   [plustek] Shutdown called (dev->fd=-1, /dev/usb/scanner0)
   [plustek] Waiting for scanner-ready...
   [plustek] Switching lamp off...
   [plustek] LAMP-STATUS: 0x00000003
   [plustek] Switching Lamp off
   [plustek] LAMP-STATUS: 0x00000003
   [plustek] Lamp-Timer stopped



Mike
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Hi 
Thanks for your job. Thanks to you i can use ma hp2200c scanner with my 
mandrake 9.0. (sane 1.0.9 and plustek driver 0.44.10)  But i've got a problem 
:  I've got some verticale lines (halftone) on the image i scan.. It seems 
that previous realease were better .
And when i launch Xsane it takes about 25 sec before detecting the device.
Any advice ?
(sorry for my poor english)

Hi,

the problem is well known but not yet solved, I'm working on that.
Can you tell me which version was better?
What about the 25s? When do they occur? You might play around
with the warmup option in plustek.conf file...

Gerhard

On Samstag, 7. Dezember 2002 20:53, pascal wrote:
> Hi
> Thanks for your job. Thanks to you i can use ma hp2200c scanner with my
> mandrake 9.0. (sane 1.0.9 and plustek driver 0.44.10)  But i've got a
> problem
>
> :  I've got some verticale lines (halftone) on the image i scan.. It seems
>
> that previous realease were better .
> And when i launch Xsane it takes about 25 sec before detecting the device.
> Any advice ?
> (sorry for my poor english)

Hi, all.
I noted the problem with the 2200c having lines in the scans, and I've been 
fiddling with mine with some success.
Attached to this email is a copy of my plustek.conf file.

First, go into /usr/local/etc/sane.d, locate your plustek.conf file and put it 
somewhere SAFE (like /home or /root).
Then, take the email attachment and put it in /usr/local/etc/sane.d and start 
up xsane.

In 42bit color mode, set the following variables:
Gamma: 2.2
Brightness: 19
Contrast: 8

Here are the modifications I have made to my plustek.conf file.
Increasing the posShading to 40 eliminates lines and faded spots, but causes 
color "latticing" in laser documents.
Increasing the gain values to 5 helps remove extreme white spots, while 
increasing all the gamma values to 5 removes dark areas.
lamp warmup is disabled, but this doesn't seem to affect the quality of the 
scans.

If this file doesn't work for you, have a play with ONLY the settings I have 
just mentioned.
If all fails, replace it with your old file.

regards,
Francis

On Sat, 7 Dec 2002 19:53, pascal wrote:
> Hi
> Thanks for your job. Thanks to you i can use ma hp2200c scanner with my
> mandrake 9.0. (sane 1.0.9 and plustek driver 0.44.10)  But i've got a
> problem
>
> :  I've got some verticale lines (halftone) on the image i scan.. It seems
>
> that previous realease were better .
> And when i launch Xsane it takes about 25 sec before detecting the device.
> Any advice ?
> (sorry for my poor english)
>
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