Markzware‘s FlightCheck, the patented preflight solution to check prepress files for print quality control,
has Non-PDF Ground Controls. These include a Contents section under Images. This Images Contents
section offers the following Ground Controls:
- Image Scale
- Image Rotation
- Image Skew
- H/V Flip
- Picture Trap
- Halftone Screen
- Transfer Function
- ICC Profile
- PS Color Mgmt.
- Ink Density Too High
Read on to learn how these preflight features can help you.
Markzware FlightCheck 7.5 Mac Ground Controls:
Image Rotation – Will trigger if the image itself has been rotated, the container can also be rotated, but this Ground Control deals strictly with the contents of an image container.
Image Skew – Will trigger if the image itself has had a skew value applied.
H/V Flip – Will trigger if an image has been Horizontally or Vertically flipped.
Styles/Contrast – Quark centric Ground Control that flags whether a Style or Contrast has been applied to an image (from the Style Menu)
Picture Trap – Will trigger if an image container in Quark has been set to something other than Default in the Trap Information Window. Typically this affects Grayscale images.
Halftone Screen – Will trigger if an image has screening values associated with it. These typically are specified angles for the CMYK components of a color image and this info can alter the actual pixel data in an image.
Transfer Function – Will trigger when a Transfer Function has been applied to an image. Transfer Functions are applied in Photoshop when saving as EPS, DCS1 and DCS2 file formats. Typically Transfer functions are used to compensate for dot gain on press. Using a transfer function may interfere with a printers normal color management procedure and thus a possible reason for wanting to detect its presence.
Channels – Will trigger if images have extra channels in them. These channels are created in Photoshop. If extra channels are detected you will see a number after the color mode in the Images area of the Overview window. For example, CMYK1 means the image is a CMYK image with one extra channel. RGB2 would mean that the image is RGB and has two extra channels. EPS files created out of Illustrator with a transparent background also will trigger this Ground Control as the transparency is handled by an Alpha Channel. Does not report extra channels in EPS files from Photoshop, but does report for TIFF and PSD files.
Patterns – Will trigger if a pattern fill has been applied to an object. This triggers only with Pattern fills from Freehand and not trigger for files from Illustrator with Patterns. Pattern fills refer to postscript pattern fills and may cause RIP time to increase on a job.
Layers – This will trigger for Top Level document created in Quark and InDesign as well as TIFF images created in Photoshop that have layers. EPS file with layers currently do not trigger this Ground Control
ICC Profile – This will trigger if an image has an ICC profile associated with it. In FlightCheck Pro you can double-click on an image and see the name of the ICC profile in the Image Detail WIndow. Images with ICC Profiles will have an “*” to the left of the Mode entry in the Overview Window.
PS Color Mgmt. – This will trigger if an EPS was created and the Postscript Color Management checkbox was selected. The Postscript Color Management remaps the EPS files color space to a specified output devices color space, which may produce undesirable results when that EPS file is placed into another document like an InDesign or Quark document that has its own Color Management settings.
Ink Density Too High – Will trigger if the sum of the CMYK ink values exceeds the amount specified for this Ground Control (user defined input). In order for this Ground Control to work, the Calculate Ink Densities checkbox must be selected. This checkbox is located FlightCheck’s main Preferences window under the Images area.
The following file formats are not supported or recognized by this Ground Control:
- CMYK EPS raster images
- Indexed CMYK in PDF files
Turning on Calculate Ink Densities in the Preferences may significantly slow down the scanning process of FlightCheck. FlightCheck calculates ink densities by scanning each image one pixel at a time and if any one pixel exceeds the value specified for this Ground Control, the image is flagged as having an Ink Density Too High. FlightCheck does not report where the offending pixel is, merely that at least one pixel in an image exceeds the specified value. Note: This only works on true raster images in FlightCheck, mainly TIFF images.
FlightCheck warns of Image Scale/Rotation/Skew, H/V Flip, Styles/Contrast,
Picture Trap, Halftone Screen, Transfer Function, Channels, Patterns,
Layers, ICC Profile, PS Color Mgmt., Ink Density, and much more.
For more information on Markzware‘s pre press software to check digital files for print quality, see the FlightCheck page.
For more desktop publishing (DTP) and printing solutions, see the Markzware Products page.
Markzware FlightCheck 7.5 Mac Ground Controls: Non-PDF Images Contents