QTR-Quadtone RIP

I'm using 2.41 in Windows 2000 Pro and have just started upsizing my 
images in Photoshop 7 to 1440 dpi before printing, rather than have QTR 
do it. This has worked fine on 4x5" test images but I've just tried 
loading an 11x14" image and QTR won't load it. When I select the image, 
nothing happens (e.g. there's no preview, no sign that QTR has loaded 
the image). If I click <Print> I get the error message "Unable to 
create TIFF Bitmap buffer."

Any ideas?

That's a pretty big file! On my system I get an error from QTRgui saying it was
unable to create the TIFF buffer. You don't have enough system resources to open
the image. 

By the way, QTR does not size the image to 1440 dpi before printing, that
happens during the printing. Also, dots per inch (DPI) is different from Pixels
Per Inch (PPI) which is what you resized to. Printers lay down many dots for
each pixel they print. This is how they create the grey scale.

Your images don't need to be more than 360 or perhaps 730 ppi for printing.


-Stephen
 www.sbillard.org/Stephen

-----Original Message-----
From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com] On Behalf
Of mccarvill
Sent: Monday, July 17, 2006 1:17 PM
To: QuadtoneRIP@yahoogroups.com
Subject: [QuadtoneRIP] QTR won't load image (11x14 1440 dpi)

I'm using 2.41 in Windows 2000 Pro and have just started upsizing my images in
Photoshop 7 to 1440 dpi before printing, rather than have QTR do it. This has
worked fine on 4x5" test images but I've just tried loading an 11x14" image and
QTR won't load it. When I select the image, nothing happens (e.g. there's no
preview, no sign that QTR has loaded the image). If I click <Print> I get the
error message "Unable to create TIFF Bitmap buffer."

Any ideas?

As Stephen mentioned 1440 PPI is too much.
The maximum that will be used at all is 720ppi but even that is 
probably overkill.

Roy

On Monday, July 17, 2006, at 01:16  PM, mccarvill wrote:

> I'm using 2.41 in Windows 2000 Pro and have just started upsizing my
> images in Photoshop 7 to 1440 dpi before printing, rather than have QTR
> do it. This has worked fine on 4x5" test images but I've just tried
> loading an 11x14" image and QTR won't load it. When I select the image,
> nothing happens (e.g. there's no preview, no sign that QTR has loaded
> the image). If I click <Print> I get the error message "Unable to
> create TIFF Bitmap buffer."
>
> Any ideas?
>
>
-
Roy Harrington
roy@...
Black & White Photo Gallery
http://www.harrington.com

Thanks, guys. The 720 ppi image loaded and printed fine. 

You're right, Stephen; I did confuse ppi and dpi. The reason I 
boosted ppi to 720 is to get rid of the (slight) banding I was 
getting when printing 360 ppi files at 1440 dpi. 

Mark


--- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@...> wrote:
>
> As Stephen mentioned 1440 PPI is too much.
> The maximum that will be used at all is 720ppi but even that is 
> probably overkill.
> 
> Roy
> 
> On Monday, July 17, 2006, at 01:16  PM, mccarvill wrote:
> 
> > I'm using 2.41 in Windows 2000 Pro and have just started upsizing 
my
> > images in Photoshop 7 to 1440 dpi before printing, rather than 
have QTR
> > do it. This has worked fine on 4x5" test images but I've just 
tried
> > loading an 11x14" image and QTR won't load it. When I select the 
image,
> > nothing happens (e.g. there's no preview, no sign that QTR has 
loaded

> > the image). If I click <Print> I get the error message "Unable to
> > create TIFF Bitmap buffer."
> >
> > Any ideas?
> >
> >
> -
> Roy Harrington
> roy@...
> Black & White Photo Gallery
> http://www.harrington.com
>

I'm curious what the performance was like on the 720ppi file, as I found
that even a 360ppi 13x19 print brought print time to a crawl (this was as
2880dpi though). Not that that's necessarily a bad thing (wasn't somebody
asking how to slow the printer down the other day?), just wondering...
 
Also curious if the ppi of the source image really had any impact on the
banding issues you had (I've been testing this week and have been finding
some banding in certain images).

Jeff
 


  _____  

From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com] On
Behalf Of mccarvill
Sent: Monday, July 17, 2006 7:59 PM
To: QuadtoneRIP@yahoogroups.com
Subject: [QuadtoneRIP] Re: QTR won't load image (11x14 1440 dpi)



Thanks, guys. The 720 ppi image loaded and printed fine. 

You're right, Stephen; I did confuse ppi and dpi. The reason I 
boosted ppi to 720 is to get rid of the (slight) banding I was 
getting when printing 360 ppi files at 1440 dpi. 

Mark

--- In QuadtoneRIP@ <mailto:QuadtoneRIP%40yahoogroups.com> yahoogroups.com,
Roy Harrington <roy@...> wrote:
>
> As Stephen mentioned 1440 PPI is too much.
> The maximum that will be used at all is 720ppi but even that is 
> probably overkill.
> 
> Roy
> 
> On Monday, July 17, 2006, at 01:16 PM, mccarvill wrote:
> 
> > I'm using 2.41 in Windows 2000 Pro and have just started upsizing 
my
> > images in Photoshop 7 to 1440 dpi before printing, rather than 
have QTR
> > do it. This has worked fine on 4x5" test images but I've just 
tried
> > loading an 11x14" image and QTR won't load it. When I select the 
image,
> > nothing happens (e.g. there's no preview, no sign that QTR has 
loaded

> > the image). If I click <Print> I get the error message "Unable to
> > create TIFF Bitmap buffer."
> >
> > Any ideas?
> >
> >
> -
> Roy Harrington
> roy@...
> Black & White Photo Gallery
> http://www.harringt <http://www.harrington.com> on.com
>

My 1280 took 42 min, starting from when I clicked <Print>, to process 
and print my 11x14 720ppi file at 1440 super / better. Not sure if my 
computer (P3, 512 MB RAM) slowed things down or not. I just got a 
new, much faster PC so I'll be able to compare.

I'm interested in this idea of slowing down the printer as well. 
My "new" 7600 allows one to force a pause between passes so I'll be 
experimenting with this at some point.

In terms of banding, I don't see any in the 720 ppi UT2 image on EEM 
whereas I did see some at 360 ppi. Not much, but enough to prevent me 
from wanting to show them to galleries, etc.

Mark 

--- In QuadtoneRIP@yahoogroups.com, "Jeff Kohn" <jkohn@...> wrote:
>
> I'm curious what the performance was like on the 720ppi file, as I 
found
> that even a 360ppi 13x19 print brought print time to a crawl (this 
was as
> 2880dpi though). Not that that's necessarily a bad thing (wasn't 
somebody
> asking how to slow the printer down the other day?), just 
wondering...
>  
> Also curious if the ppi of the source image really had any impact 
on the
> banding issues you had (I've been testing this week and have been 
finding
> some banding in certain images).
> 
> Jeff
>  
> 
> 
>   _____  
> 
> From: QuadtoneRIP@yahoogroups.com 
[mailto:QuadtoneRIP@yahoogroups.com] On
> Behalf Of mccarvill
> Sent: Monday, July 17, 2006 7:59 PM
> To: QuadtoneRIP@yahoogroups.com
> Subject: [QuadtoneRIP] Re: QTR won't load image (11x14 1440 dpi)
> 
> 
> 
> Thanks, guys. The 720 ppi image loaded and printed fine. 
> 
> You're right, Stephen; I did confuse ppi and dpi. The reason I 
> boosted ppi to 720 is to get rid of the (slight) banding I was 
> getting when printing 360 ppi files at 1440 dpi. 
> 
> Mark
> 
> --- In QuadtoneRIP@ <mailto:QuadtoneRIP%40yahoogroups.com> 
yahoogroups.com,
> Roy Harrington <roy@> wrote:
> >
> > As Stephen mentioned 1440 PPI is too much.
> > The maximum that will be used at all is 720ppi but even that is 
> > probably overkill.
> > 
> > Roy
> > 
> > On Monday, July 17, 2006, at 01:16 PM, mccarvill wrote:
> > 
> > > I'm using 2.41 in Windows 2000 Pro and have just started 
upsizing 
> my
> > > images in Photoshop 7 to 1440 dpi before printing, rather than 
> have QTR
> > > do it. This has worked fine on 4x5" test images but I've just 
> tried
> > > loading an 11x14" image and QTR won't load it. When I select 
the 
> image,
> > > nothing happens (e.g. there's no preview, no sign that QTR has 
> loaded
> > > the image). If I click <Print> I get the error message "Unable 
to

> > > create TIFF Bitmap buffer."
> > >
> > > Any ideas?
> > >
> > >
> > -
> > Roy Harrington
> > roy@
> > Black & White Photo Gallery
> > http://www.harringt <http://www.harrington.com> on.com
> >
>