Digital BW, The Print

Greetings, 

I unpacked the 3800 about a month ago and have been printing test 
charts ever since.  The charts I printed two weeks ago are all 
perfect. I am back at it today after a two week break and I cant seem 
to print at any setting without paper movement. I can actually see 
the paper swing and jog out of place as it prints the last column of 
the Eye One RGB test chart. All of the other 26 columns are perfect,  
only the final column is printed with a ghost. I cannot print charts 
using the same paaper settings I used two weeks ago without this 
happening. I have tried wide and wider platen gap settings. I have 
tried custom paper thickness, but nothing seems to change the final 
jog-over during paper transport. 

Any help would be greatly appreciated 

thank you

E Appert

Hmm, which sheet feed mechanism are you using? which paper?

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Eric Chan" 
<madmanchan2000@...> wrote:
>
> Hmm, which sheet feed mechanism are you using? which paper?
>
I had no trouble running Epson Premium luster through the rear 
feeder. After that I had trouble feeding Hahnehuhle Rag and Fine art 
pearl through the rear feeder ( I assumed that I needed practice to 
get the hang of it), meanwhile I found that I  could feed them more 
easily  through the automatic bulk feeder, since all the targets I am 
printing are on 8.5x11 paper anyway. Since then I have sent Premier 
luster Rag and Innova F matte through the automatic feeder with no 
trouble. I returned today after two weeks to profile Innova F type 
gloss and Museo silver rag. I couldn't get the curl out of the f type 
gloss even after 24 hours under a 100lbs weight. The f type gloss 
wouldn't go through the auto feed or the rear feeder even at 
a "wider " platen gap setting. I finally gave up and moved on to the 
Museo and that's when I started to get the swing and tilt.  Since I 
wrote my message earlier I have managed to print a target on fine art 
pearl without movement using the auto feeder. But Museo silver rag 
continues to move at the last quarter inch of the print. I also 
forgot to mention that the movement is accompanied by a clicking 
noise, just like those space aliens that experimented on the star 
trek crew in the middle of the night. 

Eugene

I've had what appears to be the exact same problem with the Epson 3800, 
Museo Silver Rag, bulk paper feeder: i.e. paper swing and ghosting 
during the last quarter inch, clicking noise, etc. I found this problem 
mainly with the larger papers (13x19 and 17x22). May have found a 
solution: the Museo Silver Rag has a very slight curl at the corners. 
Before loading the paper, I gently fold back each edge, so the corners 
have a backward curl. So far, this is working. I've not had this feeding 
problem with other papers. Good luck.
-Art-

-- 
Fine-Art in Black-and-White --- www.fotosea.com
   Kite Aerial Photography --- www.kapsnap.com

I agree, sounds like a head strike, with the print head touching the
side edge of the paper near the end of the print.

I also saw this problem with Crane Museo Silver Rag also (in 13x19 size)
I think the factors are:
Paper curl from part used package, especially in some humidity.
Printer head strike on the curl when printing out near the edge and end of the paper The paper is nearly unsupported at that point.
There is a potential to damage your print heads too. I had a couple of sheets where the head contact actually tore the edge of the paper. 

First I carefully curl the corners and vertical edges back to remove the curl as much as possible.
Then I carefully curl the corners and vertical edges back to remove the curl as much as possible. 
Finally I carefully curl the corners and vertical edges back to remove the curl as much as possible.

I use Wider as the Platen setting and have to reset this everytime I turn the printer on
I get smearing on the corners unless wide or wider is used
I wasted fifty dollars worth of CMSR plus ink before I worked this out. Printing smaller than 12x18 on the same paper I had no problems for a dozen prints and I was even wrongly using the bulk paper feed instead of the rear slot feed.

Now that I have it working correctly I am thrilled with the results from the 3800 profiled for the CMSR.

Cheers
Geoff

----- Original Message ----- 
From: eappert 
Sent: Sunday, July 29, 2007 2:35 PM
Subject: [Digital BW] 3800 swing and tilt

Greetings, 

I unpacked the 3800 about a month ago and have been printing test 
charts ever since. The charts I printed two weeks ago are all 
perfect. I am back at it today after a two week break and I cant seem 
to print at any setting without paper movement. I can actually see 
the paper swing and jog out of place as it prints the last column of 
the Eye One RGB test chart. All of the other 26 columns are perfect, 
only the final column is printed with a ghost. I cannot print charts 
using the same paaper settings I used two weeks ago without this 
happening. I have tried wide and wider platen gap settings. I have 
tried custom paper thickness, but nothing seems to change the final 
jog-over during paper transport. 

Any help would be greatly appreciated 

thank you

E Appert


[Non-text portions of this message have been removed]

Eric and Geoff,

Thank you very much for your help. I am dehumidifying my studio and 
manually uncurling paper stock. I have not been able to flatten Museo 
or Innova paper by cold pressing as I do with silver gelatine paper. 
Can you tell me if PK papers are altered by hot pressing and if not 
what temperatures can be applied safely?

Regards 

Eugene

Art, 

Thank you very much for your help. I am beginning to think that my 
studio might be too humid. The curl on the Innova is so extreme that I 
cant that's its hard to get out of its plastic folder. Have you had any 
success pressing these papers?

Regards
Eugene

I've had the same problem on my 2200 with silver rag
81/2 x 11.
It prints 98% of the image then goes berserk trying to
get the last bit out, clicking and screaming, leaving
excess ink and registery issues on the paper.


       
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Re: 3800 swing and tilt <http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint/message/86778;_ylc=X3oDMTJydXFuNnF0BF9TAzk3MzU5NzE1BGdycElkAzM3MDIzMTEEZ3Jwc3BJZAMxNzA1MDE5MTgyBG1zZ0lkAzg2Nzc4BHNlYwNkbXNnBHNsawN2bXNnBHN0aW1lAzExODYwNTI2MTg->
Posted by: "eappert" appert@... <mailto:appert@...?Subject= Re: 3800 swing and tilt>  eappert <http://profiles.yahoo.com/eappert>
Wed Aug 1, 2007 7:41 am (PST) 
Eric and Geoff,

Thank you very much for your help. I am dehumidifying my studio and 
manually uncurling paper stock. I have not been able to flatten Museo 
or Innova paper by cold pressing as I do with silver gelatine paper. 
Can you tell me if PK papers are altered by hot pressing and if not 
what temperatures can be applied safely?

Regards 

Eugene

Eugene, I have only used the CMSR 13x19 and some smaller stock  in my 3800 so far.
I recommend careful manual uncurling of curled CMSR in the 13x19 size, right before you load it in the rear feed slot.
This stock is quite thick and stiff and any new curl persistent.
I have no experience with pressing. I made a dozen prints from a fresh box of CMSR with zero problems. Curl only happened in the part empty box after a couple of weeks of storage. The finished prints also just stored back in the box waiting for mounting have resumed their curl since. 

Cheers
Geoff

 

[Non-text portions of this message have been removed]

Eugene,

if you haven't tried it already, consider this:

Use a cardboard tube of a fairly large diameter and of a length that
is longer than your widest sheet by a good margin.

Tape a canvas, vinyl, or similar flexible but durable fabric so that
if you rolled the tube it would wrap around it . The length of this
fabric should be longer than your longest paper.

Unroll this on a flat table so that the fabric is flat on the table
surface and the tube is attached on one end waiting to be rolled up.

Place your curled up paper so that it is snug up against the beginning
of this fabric (near the tube end). The curled side should be facing
down (against the direction in which the fabric will be rolled).
Slowly, carefully, start rolling the fabric and paper together until
all the paper has disappeared under the fabric.

Depending on the paper, the amount of curl, humidity etc -- you may
have to use a bigger or smaller diameter tube.
You may also have to let the paper sit for more or less time once it's
rolled up.
And you may still have to tweak the curl of the corners.

To control corner curl a safe option is to use the rounded edge of a
table. Preferably an edge with a generous curve - 1" or more inches.
Think of a 1" half round attached to the side of a work surface. 
You sandwich the printing paper between two thin, clean sheets of
ordinary paper and use your palms to run the corners of the sheet over
the rounded edge of the work surface.

Sounds more involved than it is once you get past the first try.

I believe it is a safer and more effective way to uncurl papers than
using a dry mount press at any temperature.


Antonis





--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "eappert"
<appert@...> wrote:

>
> Eric and Geoff,
> 
> Thank you very much for your help. I am dehumidifying my studio and 
> manually uncurling paper stock. I have not been able to flatten Museo 
> or Innova paper by cold pressing as I do with silver gelatine paper. 
> Can you tell me if PK papers are altered by hot pressing and if not 
> what temperatures can be applied safely?
> 
> Regards 
> 
> Eugene
>

I made a similar "de-roller"

Went to Office Max.  Bought a mailing tube and a laminated wall 
calendar.  Taped it on the tube.  Works great.  It really does not 
take much to reverse curl a sheet, but, if necessary, I find that I 
can vary the "de-rolling" by how long it stays rolled up.  Since much 
of my paper needs to be feed on the 3800 rear feeder, it is not a big 
deal.

Seems like many of the single sided papers have the curl problem.  
Probably due to the coating.  

Also, when I do dual sided contact sheets on (cheaper) matte paper, I 
need to "uncurl" a bit, as the drying ink seems to add bit of a curl, 
which would disappear if I waited for it to dry, but want to feed it 
back in fairly fast.

John 


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Antonis" 
<antonisphoto@...> wrote:
>
> Eugene,
> 
> if you haven't tried it already, consider this:
> 
> Use a cardboard tube of a fairly large diameter and of a length that
> is longer than your widest sheet by a good margin.
> 
> Tape a canvas, vinyl, or similar flexible but durable fabric so that
> if you rolled the tube it would wrap around it . The length of this
> fabric should be longer than your longest paper.
> 
> Unroll this on a flat table so that the fabric is flat on the table
> surface and the tube is attached on one end waiting to be rolled up.
> 
> Place your curled up paper so that it is snug up against the 
beginning
> of this fabric (near the tube end). The curled side should be facing
> down (against the direction in which the fabric will be rolled).
> Slowly, carefully, start rolling the fabric and paper together until
> all the paper has disappeared under the fabric.
> 
> Depending on the paper, the amount of curl, humidity etc -- you may
> have to use a bigger or smaller diameter tube.
> You may also have to let the paper sit for more or less time once 
it's
> rolled up.
> And you may still have to tweak the curl of the corners.
> 
> To control corner curl a safe option is to use the rounded edge of a
> table. Preferably an edge with a generous curve - 1" or more inches.
> Think of a 1" half round attached to the side of a work surface. 
> You sandwich the printing paper between two thin, clean sheets of
> ordinary paper and use your palms to run the corners of the sheet 
over
> the rounded edge of the work surface.
> 
> Sounds more involved than it is once you get past the first try.
> 
> I believe it is a safer and more effective way to uncurl papers than
> using a dry mount press at any temperature.
> 
> 
> Antonis
> 
> 
> 
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "eappert"
> <appert@> wrote:
> >
> > Eric and Geoff,
> > 
> > Thank you very much for your help. I am dehumidifying my studio 
and 
> > manually uncurling paper stock. I have not been able to flatten 
Museo 
> > or Innova paper by cold pressing as I do with silver gelatine 
paper. 
> > Can you tell me if PK papers are altered by hot pressing and if 
not 

> > what temperatures can be applied safely?
> > 
> > Regards 
> > 
> > Eugene
> >
>

www.yoelisd.artspan.com 
   
  Thank you.
   

       
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