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Author Topic: Print Spool storage and management on Canon iPF HDD machines  (Read 11467 times)
robotnz1000
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« on: August 27, 2010, 07:37:52 PM »

cheers,

Spool saving and storage!! What is the way to save print spools off and on printers?

The Canon iPF8000s uses a 5400rpm 80GB conventional laptop HDD to store spools in mailboxes. The mailboxes can be named, renamed and spools moved between mailboxes at any time via the printers 'Status Monitor' or via the 'Remote UI' which is basically the status monitor program, ported to a browser interface and with nice GUI colours added...!

So user has no choice but to save print spool, as by default, it goes to the printers HDD and into common 'mailbox' unless redirected to another named/numbered box. Job can then be either just saved there or printed immediately. The spool is given the previous file name by default and has no (visible) .suffix - so the format of the spool file is not provided to user. Photoshop is seen to create the spool and the printers HDD led seen to save it. The spool can then be reprinted at will or moved between mailboxes. It cannot be edited in any way, neither can it be retrieved to the PC which sent it ( I think, from my present knowledge of machine!).

It may be a matter of only time before the Canon interface programs allow the spools to be retrieved, but at present, the print file needs to be stored on the sending PC if it is to have edit ability and be re-sent to the printer again at a later stage. All mailbox content on the printer can only be moved, deleted or printed.

So this system is rather like sending mail and not being able to receive it. Also, one has to, by default, PRINT the file, to save it on the printers HDD - though it can be just saved there for later use. I think with a little more work the 'mailbox' method should be extended to allow the creating PC to PRINT the spool to PC based 'mailboxes', and for those mailboxes to be able to be dragged and dropped to the printers HDD 'mailboxes', within the present status monitor or the 'Remote UI'. For example, like having the PC and the printer both running 'print mail programs' which allow dragging and dropping (or cut and paste) of spools to each other. Since all the print setup is in the spool I am not suggesting the spools for one printer could be dragged and dropped to another printer - for this would be complicated by the page size and ICC profile etc embedded for the previous printer, it was intended for.

So I am suggesting and asking if 'one printer - one spool' storage, can be better managed than in the present Canon system - of 'no return mail' allowed & 'no off printer spool storage allowed'?? OK, their system is pretty new, but they certainly made it for bunnies/dummies and to prevent errors.

I accept, of course, that removing the printer HDD and viewing its printer formatted content, mailboxes and stored spools, could enlighten the issue, but I haven't got that far yet.

My thoughts are that this has all likely been done before using other high end rips and I am concerned to know if there is existing software which can enable this task without having to wait for Canon to extend their new printer spool management programs.

regards to all

 Wink  Roll Eyes
 


« Last Edit: August 27, 2010, 07:47:54 PM by robotnz1000 » Logged
robotnz1000
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« Reply #1 on: August 28, 2010, 09:03:42 PM »

cheers,

Since posting here I have searched google with little result on this topic.

The best suggestion has been the workaround of using a PDF creator and printing to PDF, then saving the PDF's. 

But The PDF is not the spool, it will not be accepted by the printer, it cannot be sent to the printer without opening/unzipping it, and it will still need spooling again.

So printing to PDF and storing PDF's is not even a near comparison to saving and storing spools off and on the printers HDD. It may be better than saving jpegs/tiffs, if paper size and ICC profile is embedded, but if it needs opening and spooling again all is lost in my view.

My first post suggested being able to edit the spools if they can be recovered or stored on the PC creating the spool, but this is a separate issue and I would accept an easy workaround is to just save the file itself for potential re-edit and re-spooling.

It is the storage of spools on the PC ~ for printer HDD space expansion, etc. ~ and the convenience of dragging and dropping of mailbox content between PC and printer that would be a great step forward.

For example, the running of two printers the same; using same spools; is not possible in the present system, as 'our spools' are all now locked on the first printer. Even if the first printers HDD was extracted and spools copied, they can then be saved on the PC but cannot be sent to 2nd identical machine to print. The present default format of one PC spooling to printers HDD is explicit ~ the spool is locked in this prison!!

:-)
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robotnz1000
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« Reply #2 on: August 29, 2010, 01:15:33 AM »

Update - unlocking the spools 'prison'!!

After printing several files on iPF8000s using a 3.5" 500GB WD Sata HDD (after it had been re-formatted on the printer), I removed the drive to view content in Win XP.

The printers re-format of the drives prior full 500GB format in NTFS - was to make 3 partitions, the first 126.7GB Fat32, the second 1.28Gb fat32 and the third 337.76GB Unallocated.

The first partition contains only 4 files; they are, 1. cpcainfo, 2. dminfo, 3. garodata, 4. temp. All names are lower case.
The files 2 & 3 are empty.

The cpcainfo file contains the mailboxes, except common, which appears in the temp folder. Opening the temp folders first mailbox one sees-

DOC-00000001-1.gad Size 992kb, type GAD file

This was my first print, it went into the common mailbox.

So Canon are using a format Windows XP says is a GAD file, to store the spools.

Opening the file in notepad/word pad it looks like this (cut and paste):

%-12345X@PJL
@PJL RESET
@PJL SET HRESOLUTION=1200
@PJL SET VRESOLUTION=1200
@PJL SET PAPER=CUSTOM
@PJL SET PAPERLENGTH=2794
@PJL SET PAPERWIDTH=9200
@PJL SET TOPMARGIN=50
@PJL SET BOTTOMMARGIN=50
@PJL SET LEFTMARGIN=50
@PJL SET RIGHTMARGIN=50
@PJL SET SAVE_PAPER=OFF
@PJL SET BANNER=OFF
@PJL SET ROLLMEDIA_CENTER=0
%0A$b1680WS wN31, etc, etc.

How does this help?? Well, it shows it is possible to pull an iPF formatted hard drive and view content in XP, also the spool files can be copied and/or the drive imaged. Note laptop drives need only a 5v supply, 3.5" SATA use 5v and 12v. The Canon iPF printers have no 12v from their power supply.

So the spool file format Canon are using is now known... GAD, according to Bill Gates!

All comments welcome!!

:-)
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