CtP File format

Mga Bosing,


Tanong lang po sa mga experts.

Ano po ba ang advantage ng PDF file format over 1 bit TIFF (and vise versa)?

Bakit po merong mga CtP na ang input format ay dapat 1 bit TIFF? Ang ibig sabihin po ba nito, di siya pwede na PDF file format?

Please comment po.


Salamat po.
ARC

Hi ARC,

Yung PDF file hanggang sa RIP lang yun. Itong PDF file ang ira-rasterize ng RIP para maging 1-bit TIFF. Tapos itong 1-bit TIFF ang ipapadala sa CTP imager.

Hope this helps.

the file format going to thr RIP from computer is called Vector graphics and then process by the RIP. After processing, it is now called bitmap graphics. ito lang ang naiintindihan ng printer.

Sana nakatulong.

Welcome back, CIECAM!!!

PDF files have to be processed by a rip software which converts the file to a bitmap that defines the image to be plotted by the CtP device to the plate. The rip software may interface directly to the platesetter for immediate plotting; or it may produce a 1-bit tif file.

In lieu of a rip, many CtPs are now supplied with a tif catcher which will accept the 1-bit tif file produced by the rip software. With this setup, the user can rip a pdf file with the rip software of his choice; and then send the 1-bit tif to several devices such as his CtP , dot proofer, imagesetter and other devices. This setup is called ROOM or Rip Once Output Many.

larrysison wrote:

Hi ARC,

Yung PDF file hanggang sa RIP lang yun. Itong PDF file ang ira-rasterize ng RIP para maging 1-bit TIFF. Tapos itong 1-bit TIFF ang ipapadala sa CTP imager.

Hope this helps.

Thank you Sirs for your expert comments.

But how would you handle is if the printing company wanted a straight forward procedure?

Meaning, he doesn't want to touch the PDF and rasterize to TIFF file format? Some workflows allow or accepts several formats, what if your workflow only recognize TIFF?

For them it's an additional step. Also, 1 bit TIFF are heavier compared to PDF's?

Hoping for your feedbacks.

TY
ARC


PS:

Would there be a lost data on the PDF to TIFF during coversion?

Quote :

Thank you Sirs for your expert comments.

But how would you handle is if the printing company wanted a straight forward procedure?

Meaning, he doesn't want to touch the PDF and rasterize to TIFF file format? Some workflows allow or accepts several formats, what if your workflow only recognize TIFF?

For them it's an additional step. Also, 1 bit TIFF are heavier compared to PDF's?

Hoping for your feedbacks.

TY
ARC


PS:

Would there be a lost data on the PDF to TIFF during coversion?

ARC,

Allow me to answer your query. If you cook your PDF files according to the printer's requirements, then that printer's will not touch your PDF file. But I doubt it, there must be some preflighting on the fly going on in his system. Plate is expensive, printer doesn't want to waste it.

There's no such thing as recognizing only TIFF file in a workflow.

This is how the CtP works (most):

1. PDF - Imposition - RIP to TIFF- plate
2. PDF - RIP to TIFF - imposition - plate
3. PDF - imposition - RIP - plate

If you notice, today's workflow requires clients to submit PDF only. Cook your PDF accordingly, and you'll have no problems.

HTH,
Alex

Alex Dulay wrote:

Quote :

Thank you Sirs for your expert comments.

But how would you handle is if the printing company wanted a straight forward procedure?

Meaning, he doesn't want to touch the PDF and rasterize to TIFF file format? Some workflows allow or accepts several formats, what if your workflow only recognize TIFF?

For them it's an additional step. Also, 1 bit TIFF are heavier compared to PDF's?

Hoping for your feedbacks.

TY
ARC


PS:

Would there be a lost data on the PDF to TIFF during coversion?

ARC,

Allow me to answer your query. If you cook your PDF files according to the printer's requirements, then that printer's will not touch your PDF file. But I doubt it, there must be some preflighting on the fly going on in his system. Plate is expensive, printer doesn't want to waste it.

There's no such thing as recognizing only TIFF file in a workflow.

This is how the CtP works (most):

1. PDF - Imposition - RIP to TIFF- plate
2. PDF - RIP to TIFF - imposition - plate
3. PDF - imposition - RIP - plate

If you notice, today's workflow requires clients to submit PDF only. Cook your PDF accordingly, and you'll have no problems.

HTH,
Alex

Thank you bossing!