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About Me
- Gordon Pritchard (a.k.a. gordo)
- Formerly Print Quality Marketing Manager for eleven years at Creo/Kodak. Presented at print technical conferences, trained printers and buyers regarding print quality issues in Europe, N. America, and S.E. Asia. Articles published in trade journals, co-authored TAGA paper on halftone screening, authored BRIDG's guide to halftone screening. Previously Technical Director of Western Canada's largest commercial sheetfed shop. For several years Professor of Digital Graphic Design at Emily Carr University. Former Creative Director at McCann Ericksson Vancouver. Currently looking for opportunities related to the subjects covered in this blog. Contact me at: pritchardgordon @ gmail (dot) com.
Past Topics - but not every topic covered is listed here.
- AM/XM Screening (27)
- Color alignment (41)
- Color tolerancing (9)
- competition (35)
- DMaxx (1)
- dot gain (12)
- Dot Shapes (5)
- FM screening (21)
- GCR (10)
- Ghosts (2)
- grey balance (6)
- Grey Levels (1)
- Grrrrrrrrrrr (5)
- Halftone Screening (36)
- Hi-Fi color (5)
- Ink (14)
- ink saving (10)
- Ink Sequence (4)
- Investments (13)
- jpeg (3)
- Loupes (2)
- lpi/dpi (5)
- Metamerism (1)
- Misc. (44)
- Moiré (8)
- Optical Brightners (6)
- Pantone (11)
- Paper (3)
- Print 09 (8)
- print buyer (15)
- printing press (35)
- Profit (6)
- proofing (9)
- quality (99)
- RE:Print (11)
- Registration (3)
- Reseparation for ink saving (9)
- Rosettes (4)
- Scanning (4)
- Screen angles (5)
- SID (8)
- Spot color (11)
- Success (64)
- Supplied art (24)
- TVI (10)
- UCR (2)
- Vendors (10)
- Wayback View (35)
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Gordon,
ReplyDeleteI would say that the comment "It is caused by the layout of the press sheet elements combined with the limitations of the press inking system." which is used often is not correct.
All the mechanical ghosting, starvation problems are caused ONLY by the design of the press. It is not caused by the image even though the image needs to be adjusted with takeoff bars to help cope with the problem.
If one does not get such a ghost in an inkjet printer, it can not be related to the design of the image. Also there are offset presses that tend to not ghost at all. Anicolor, Karat, Genius basically do not have mechanical ghosting.
Blaming the image for the poor performance of the offset press has gone on for years and people have accepted that excuse.
A little more attention to press design could have eliminated these problems years ago.
I guess I could have written "exacerbated" rather "caused" by the layout of the press sheet elements. I'm not blaming the image for the performance of the offset press. Until press designs change and all the old presses replaced - ghosting can be an issue on a print job. The point of this post is simply to make people aware of some of the conditions that can result in ghosting as well as some of the work arounds.
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