Harlequin Resolution Settings and Dot Shape with Ryobi 3404 DI

[Biosizzle]

Our file handling usually goes as follows: Customer supplied flattened PDFs of resolutions between 300 and 600 dpi are preflighted and sent to the RIP, which is currently set up to RIP at either 1270 dpi or 2540 dpi. Are there any advantages/disadvantages to ripping at the higher resolution? Or is it a moot point?

Also, it was suggested by RTI that most people running this press use the elliptical P dot shape. When we acquired it new, virtually all the prior calibrations were set to the round dot shape. We primarily produce heavy card stock event postcards with heavy coverage and vivid, colorful graphics. Are there any advantages to either?

My main motivation for asking is we are about to send in press calibrations to RTI and we want to be set up in such a way that best suits our needs. Any help would be much appreciated.

[danremaley]

Many questions, please give me a call. . .
Dan Remaley (former GATF consultant)
412.889.7643

[gordo]

1270 dpi is usually used by newspaper printers. You probably won't see any difference between 1270 dpi or 2540 dpi in image areas but you will likely see a difference (jaggies) in line art and text.

The elliptical P dot shape is the standard elliptical dot shape.

The best AM/XM dot shape in a non-film (CtP) workflow is the round dot. The reasons why are explained here (along with the benefits and issues of various AM dot shapes):

Quality In Print: AM Screening Dot Shapes


best, gordo