----- Original Message ----
> From: Bruce Johnson <[email protected]>
> On May 28, 2011, at 4:41 AM, Geke wrote:
>
> > Or: Glen could batch-process the images, i.e. open them and save them
> > uncompressed, and then print those. That would take the load off the
> > printer’s processor and put it on the Mac’s CPU.
>
>
> Decompressing the tiff file (which is LZW compressed) is done by the CPU
>anyway, not the printer.
>
This is what transpires:
When I send 100 or 200 compressed tiff's to the Canon IRC3220 copier/printer.
It
takes 1-2 minutes to get the green light on the copier/printer start flashing
indicating that files are received and printing starts in about another minute,
The spinning beach ball on the Mac spins for about another minute and goes
away.
Then the activity monitor on the Mac CPU is around 4% unless I use the mouse or
do other work and then of course the CPU activity goes up.
100 compressed files are approximately 10 MB so I think the transfer time over
10baseT Ethernet is about right. But I suspect the RIP* in copier/printer is
taking the heavy load and processing the files since it takes about an hour to
print 200 files and in the mean time the Mac is total useful for other work.
I don't have the spec's for the RIP in the 3220 but do know it is faster that
the RIP in my other copier/printer which has dual-core 2.5 MHz processor.
Really would not expect my outdated 733 MHz DA to process these files in a
shorter time than the RIP in a production machine -- but I really don't know
all
the in's and out's of the process so I'm guessing.
Thanks again Bruce as always you have been so very helpful. --glen
*RIP for the non-Geke this stands for Raster Image Processor which takes the
pixels in the file and turns them into a printed page (greatly oversimplified).
< http://en.wikipedia.org/wiki/Raster_image_processor>
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