2007 Print Production by Claude McCue Flashcards
Why do you need to know a bit about production when you finish your part of the design work?
The more you know, the more you can do to prevent problems and missed deadlines.
How was the design process 25-years ago?
Graphic arts professionals were clearly defined, wasn’t overlap of skills or responsibilities. Designers weren’t required to perform prepress and printing endeavors.
What did production artist do 25-years ago?
- Production artist created page layouts by gluing down photo prints with wax or rubber cement to piece of thick illustration board, creating a mechanical artwork
- Type corrections were done with X-Acto knives and rubber cement, very much like refridgerator magnet poetry
- Who generated text using phototypesetting equipment?
- Who did trade shops employ to create color separations and shoot line shots of mechanicals?
- Who performed color corrections by etching film with acid solutions to change the size of dots?
- Typesetters, after deminse of lead-based hot type
- Trade shots employed cameramen
- Dot Etchers performed color corrections
- Who combined line shots and color separation filsm from the camera to create final page film?
- Who created final composed page films into photosensitive materials?
- What does color key proofs consist off?
- Film strippers combined line shots and color separation films
- Page proofs were created by exposing final composed page films
- Color Key proofs consisted of individual color overlays, one for each printing ink
What is a matchprint?
A matchprint consisted of color layers luminated to printing stock
What is Cromalin proof?
A Cromalin proof were made by dusting pigment onto sticky image
What happened after proofs + films were handed over to the printer?
An imposition was made
What are bluelines?
- Single-color proof that actually weren’t always blue
- It was exposed from imposed flats, folded, to check mechanics of page contents
- Check imposition
_______ were burned from imposed flats, then mounted on press
Plates
What is a makeready?
It is when the pressmen adjusted ink coverage on the press during the process of getting the press up to speed and the ink behaviour optimal
When would you attend a press-check?
You would attend a press-check after the makeready to assure everything is okay.
MAKEREADY: After the pressmen adjusted ink coverage on the press during the process of getting the press up to speed and ink behaviour optimal
What revolutionized the art of color separation?
The introduction of electronic scanners and color eletronic prepress systems (CEPS)
What replaced the X-Acto knive and hot wax applicators in 1985?
Apple desktop units, advent of page-layout programs such as Ready, Set, Go! and Aldus Page Maker.
What turned laser printers as viable output devices for camera-ready art?
Adobe PostScript
Can you compare the ‘color break’ method in the old days with today’s product ready to print files?
- In the old days, the color break method was usually the prep workers in color trade shop. They would cut out masks to accomplish mechanical color.
- Today, designers have a finished product ready to print with color break as panel option in Illustrator.
When does preflight usually happen?
Prepress department
What is the difference between the ‘sales’ person and ‘customer service representative’ at the printing plant?
- Print salesperson will be your first contact. You can ask them about special stock like vellum or heavy cover stock. Finishing treatments like embossing and die cutting.
- The Customer Service Representative (CSR) prime contact throughout the remainder of your job. You send your corrected files to a CSR, they usually speak design and printing concepts.
How does the planning, scheduling and estimating work at a printing plant?
- You get a job ticket which will have job materials
- Job number
- Client info
- Internal contacts (sales person, CSR)
- Intended press
- Inks, including speciality inks
- Due dates
- Line screen
- Custom handling required
- The printed hard copy with disk goes inside a job jacket
- Some printing plants use bar codes on their tickets
- Planners establish basic flow of your job, including timeline
- Schedulers track all jobs running at any given time
- Estimators determine job cost, including labor, paper, ink, press and bindery time
What are some dedicated preflight software used for QuarkXPress or In Design?
FlightCheck Professional from Markzware
What are some PDF-specific software you can use to prefligt PDF files?
Enfocus PitStop
PDF/X Checkup from Apage
Adobe Acrobat Professional + Print Production Tools
Why is dedicated film strippers and light tables increasingly rare?
- Because of overwhelming move to computer-to-plate (CTP)
- Strippers would be called upon for last-minute corrections by paing out or grafting in replacement in film pieces
What are some typical ways the designers worked with the printer using FPO images in their workflow?
- The printer / designer would provide a low-res scan of FPO art
- The printer would scan high-res art
- The printer would replace FPO images + silhouette of images
- This will add job cost and time
Name 3 things a prepress operator will still need to tweak on your job
RIPing (raster image processing)
Trapping
Imposition
Your job contains a large solid area of black.
What would the prepress production operator do with the single black ink?
He will replace the single black ink with rich-black mix
as C60-M40-Y40-K100 to facilitate good outcome on press
You have a gradient pattern in Quark file.
What would the prepress operator do to the gradient created inside the program?
He would replace it with a Photoshop gradient to prevent banding appearance in output
What is banding?
It is when the image prints stripes or ‘horizontal bands’ across the page.
It happens seldom in QuarkXpress with gradients
What does RIP mean?
- Specialize software that converts PostScript or PDF info into bitmap
- Drives an imagesetter to image film or platesetter to image plates
- RIP interprets incoming page-descriptions (PostScript or PDF) information and converts that data to a literal bitmap
- Instructs the marking engine of output device how to image the film, plates, or, electrostatic drum
-
In-RIP trapping
- Low-resolution to high-resolution image swap functions
What is PostScript?
PostScript is actually a programming language that is used to describe and define pages so that output devices know how to image those pages
What is trapping?
Trapping provides a combination of colors at the edges of abutting color areas to camouflage any slippage
The majority of trapping now takes place at the RIP
What is imposition?
Imposition operators combine individual pages in proper pagination for plating
Using plating functions
What is the difference between a blueline or color match on press (contract proof)?
A color or single-color proof (blueline) after prepress production is used for customer markup and approval before proceed to imposition or output of film or plates. It is also used in bindery to check imposition.
The color match on press maybe a single page, reader spreads, viewed under controled conditions in viewing booth. Painted in neutral gray and uses special lights for standardized environment. Color temperature is intended to mimic daylight. You sign off and it is a contract between you and the printer.
What is the difference between a printer alteration and an artist alteration?
- Printer alteration (PA) is result of mistake made during production, volunter changes to job to ensure satisfactory printing
- Artist alteration (AA) is customer alterations requested by designer or their client
How do / did they create plates?
-
Film taped down in flats on large, clear carrier sheets
- Expose printing plates with powerful lights
- Error in aligning the individual pieces would affect quality
-
Computer-to-pate: imposition is digitally created
- Printing plate is directly exposed in large image device
- No intermediate film
- Photosensitive coating on imaged plate is photographic film, baked, for printing
-
On-press imaging: smller-format presses.
- Unexposed plates mounted on press
- Image units expose plates in position
- Reduce makeready time b/c plates are in position
Name 6 types of printing press options you have
- Offset printing
- Gravure
- Flexography
- Letterpress printing
- Screen printing
- Digital printing
What is the difference between Offset Printing and Gravure?
Offset printing is used most frequently
Gravure is used for long runs typical catalogs or magazines
What is the difference between Flexography and Letterpress printing?
Flexography is used for flexible packaging such as wrappers, foil bags and labels
Letterpress Printing is used for artistic applications such as invitations and special publications
What is the difference between Screen Printing and Digital Printing?
Screen printing is only for clothing, t-shirts, fine-art pieces, print on irregular surfaces such as cans, bottles or other containers
Digital printing is used for short-run printing jobs such as brochures, product literature, mailings and small-circulation magazines
You want to customize information for your postcard. How do you do this?
Variable data
What are some things the pressmen will do during preparation in pressroom?
- Adjusting ink coverage
- Varying the pressure of ink-bearing plates
- Transfer blankets
- Adjust paper-feeding mechanisms
- Basically fine-tuning the mechanics
The term ______ refers to the process of getting the press up to speed and ink behaviour optimal
makeready
The press crew will be using approved ______ ______ to guide them in setup
contract proofs
Name 6 types of finishing functions that traditionally operates in the finishing department or bindery.
- Trimming
- Folding
- Stitching
- Die Cutting
- Binding
- Gluing
When do they trim? What is trimming?
Give an example.
- Large, heavy-duty trimming equipment used to cut printed sheets to final size
- Cut apart ganged content such as business cards
- Signatures of book trimmed after bindery (pages clearly aligned)
What is folding? When does it happen?
Give an example?
- Simple folding performed inline such as printed sheets off press
-
Complex folding with pocket folders or packaging
- Folding equipment for complex folding
- Some require handiwork, which adds cost to job
When do a piece require stitching? What is saddle stitching?
Give an example.
- Stitching is when a thread may be used to anchor the pages of a signature for a finished book
- Wire is often used for stitching during stapled pieces
- Saddle stitching refers to group of pages that is help, draped over a saddle, while it is stitched
How does die cutting work? How is it made?
Give an example.
- A die is a shaped metal cutter that is used to trim the edge of printed paper into special shape or hole through the piece
- Tabs on edges of dividers are simple die cutting
- Standing dies for tab creation supply a template for existing dies to avoid cost of a custom die
- Interlocking panels, scoring, after die cutting for packaging can add cost
- The assembly of custom die requires skilled craftspeople which is why it can be very costly and time-consuming
Name 5 types of common binding
- Saddle stitching
- Perfect binding
- Coil binding
- Comb binding
- Wire binding
What is perfect binding?
Perfect binding is when you have multiple signatures combined into a bundle, anchored with an adhesive, bound with tape or paper binding to hold together.
Which binding method requires providing areas for gluing?
Perfect binding, pocket folders and packaging
What are some of the mailing and fullfillment services some printing companies provide?
- Fullfillment is useful for product literature and other pieces with a long life span, such as pocket folders and presentation binders
- The printer keeps inventory of the store boxes or materials, ships as needed
- Some specialize in mailers such as catalogs
- Offer mailings as part of job cost and process: variable data addressing
- Mailing of deliverable
What is aqueous coating?
- A water-based coating applied over entire printed area.
- Protect the printed ink
- Enhance appearance
- For ex: pocket folder might benefit from aqueous coating because it will prevent scuffing as pocket folders repeatedly handled
What is a baseline?
An imaginary line at the base of a row of text. All text sits on a baseline, with descenders such as the lower case y and g extending below the baseline
What is a bindery?
- Sometimes also called finishing department
- Bindery performs trimming, folding, gluing, stitching for finished pieces
What is a blanket?
- An intermediate, rubber blanket used in offset printing to transfer the printing ink to the paper surface.
- The inked printing plate transfer ink to the paper surface.
- The inked printing plate transfers ink to the blanket, which then applies the ink to the paper
- The use of intermediate blanket is the reason the printing process is called offset printing
Why is it called ‘offset printing’?
The use of intermediate blanket is the reason the printing process is called offset printing
Define blueline
- A single-color proof made by exposing photosensitive paper to strong light source through film
- Usually a multipage, imposed layout for plate
- Bluelines are used for proofreading, checking for scratches in film, correct pagination of flat
- In CTP environment, bluelines are often digitally output on large-format inkjet printers
What is a cameraman?
- In the days before scanners, camera-men used masking and exposure techniques to create film color separations on large cameras.
- Transparencies, color prints, original artwork were mounted on a large platen and the photographed through color filters
- Generate the films for printing inks
What is camera-ready art?
- Ink drawings for illustrations, logos, finished mechanicals ready to be photoshoped by cameraman.
- The line shots of the clean, camera-ready artwork were used as starting point for film stripping.
What does CEPS (color electronic prepress system) mean?
- Specialized computer system for retouching and assembling of images
- Cost million dollars: Scitex, Crosfield, Linotype-Hell and Dainippon Screen
- Largely rendered obsolete by advent of Photoshop
- Obsolete by affordability of Macintosh
What is a chase?
A wooden frame that contains metal printing components sued in a letterpress printing press
What is coil binding?
- Also known as spiral binding.
- Pages are punched (usually at left or top edge)
- Single coil (spiral) of plastic or wire is threaded through punched holes to anchor pages together
- Coil binding is useful for presentations and workbooks because pages lie flat when finished piece is opened
- No printable spine
What is spiral binding?
- Also known as coil binding.
- Pages are punched (usually at left or top edge)
- Single coil (spiral) of plastic or wire is threaded through punched holes to anchor pages together
- Spiral binding is useful for presentations and workbooks because pages lie flat when finished piece is opened
- No printable spine
What is a color break?
- How color should be used in various areas of the page.
- Physical mechanicals + colored markers were used to mark a tissue paper overlay so that film strippers would know how to apply color to type, rules and boxes
- Headlines might be circled and marked to print as M100-Y100 and quick sweeps of blue marker, accompanied by written instruction
- Coloring books for adults
Describe Color Key
- The Color Key proofing system used individual photosensitive color overlays to create proofs.
- Each sheet was exposed to a high-powered light source through the appropriate color separation film (cyan, magenta, yellow, black or spot color).
- After development in alcohol-based bath, the unexposed areas of the sheet would wash off, leaving the exposed areas to represent the printing ink.
- The overlays were aligned, and then taped to a white paper base.
Describe color separations.
- Individual sheets of film for each printing ink in reproducing artowkr.
- 4-color designs, 4 pieces of film
- 1 is for cyan, magenta, yellow or black
- Duotone image, two films generated
- One for Black ink
- One for Spot Color
- Tritones, 3-pieces of film
- Formerly created by cameramen until intro of scanners
Describe color temperature
- A standardize measure of value of light source to control viewing conditions
- Piece of iron heated in furnace
- As temperature increase, color given off by piece of iron goes from dull to red, followed by orange
- The standard in graphic arts industry was 5000K (Kelvin) viewing conditions - often refered to as D50 lightning
- Now move to brighter, 6500K (D65) lightning
Define comb binding.
- A binding method in which pages are punched, comb-like piece of curved plastic inserted (at left to top edge)
- The teeth of curved comb curls into punched holes, curvature of insert draws it closed
- Comb binding allows finished piece to open flat, suitable for textbooks and workbooks
- The spine can be imprinted
Define comp
- It is short for comprehensive
- A representation of the final printed piece, usually printed on a desktop printer and manually assembled to show a client how the finished piece should look
- Comps are helpful for checking pagination and planning complicated pieces such as thos involving inserts, tabs, custom trimming
- Sometime called a mockup
Define Computer-To-Plate
- Direct imaging of a printing plate from digital information
- CTP replaces previous methods of generating intermediate film and exposing plates
- Imposition is clearly created, printing plate is exposed in large imaging device using no intermediate film
How do we get a “continuous tone” in print?
- A smooth transition from one color to another, such as variations of color in a color photograph
- Emulsion of photographic print can replicate continuous tones, printing presses cannot
- Printing process approximates a variety of color by using halftone dots
What makes is possible to replicate continuous tones in photographs?
Emulsion of photographic print can replicate continuous tones, printing presses cannot
Define contract proof
- A proof intended represent appearance of the final printed piece
- It is used for color and content matching on press
- Exposing proofing materials through final film, now generated digitally from same information used to generate plates
- Signing contract proof constitutes agreement with printer + client
- The printer is then obliged to match the proof on press
What is Cromalin?
- Product of DuPoint
- Cromalin proofing offers analog (film-based) and digital proofing options
- Use photosensitive coatings adhered to heavy carrier sheets
- A layer of photosensitive coatings is exposed to high intensity light source through film for one printing inks
- Positive acting: exposure hardens area of photosensitivity coating, leaving remainder slightly sticky
- Another layer of photosensitivity is CARRIER and exposed through the film for the next color, etc
- Now less film is generated, more digital
What does it mean when you have to ‘cure’ a printed piece?
- Minimize smearing or scuffing
- You dry, harden or apply another material
- Heat, pressure, air or ultraviolet light
What is custom-mixed inks?
- To mix a custom color to get exactely the right shade
- Printer should provide a “ink draw-down” which is a thin film of custom ink applied to paper (idealy the actual printing stock)
You created a custom mixed ink and need to know how the ink will print on your paper. What do you need to request from the printer?
Printer should provide a “ink draw-down” which is a thin film of custom ink applied to paper (idealy the actual printing stock)
How do they make die cutting?
Use pressure and shaped metal dies to cut a printed piece into a shape
Sometimes done by printer or otuside subcontractor
What is a ‘digital press’?
- Plateless printing device that looks like Offset printing
- High-end, toner based
- Presses that enable on-press imaging of conventional plates
- Enable customization of each piece