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Questions and Answers

What does the term DPI specifically refer to?

  • The size of images in pixel dimensions
  • The number of dots per inch that a printer can produce (correct)
  • The measurement of color fidelity in printing
  • The number of pixels along a line of printed material

What is the appropriate resolution for scanning an image if the printing will be done at a 175 line screen?

  • 350 pixels per inch (correct)
  • 150 pixels per inch
  • 72 pixels per inch
  • 300 pixels per inch

When considering image resolution, what does the acronym PPI stand for?

  • Pixels per image
  • Pixels per inch (correct)
  • Pixels per input
  • Pixels per indicator

Why is a 72 pixels per inch image suitable for web display but not for high-quality printing?

<p>It lacks sufficient detail for printing at high quality. (D)</p> Signup and view all the answers

Which of the following chapters would most likely cover the impact of color reproduction quality on print jobs?

<p>Chapter 29 - Factors affecting the reproduction of colours (A)</p> Signup and view all the answers

What is the maximum quality resolution recommended for photos intended for print?

<p>300 pixels per inch (B)</p> Signup and view all the answers

In the context of pre-flight checks, which of the following is least likely to be considered?

<p>Checking file size (B)</p> Signup and view all the answers

What file format is suggested for saving images meant for print?

<p>TIF (C)</p> Signup and view all the answers

What key process is described in Chapter 34 regarding print jobs?

<p>Performing proofing and checking (D)</p> Signup and view all the answers

What characterizes a high-resolution image compared to a low-resolution image?

<p>It has a larger file size. (A)</p> Signup and view all the answers

Which chapter would provide guidelines on the specifications necessary for executing print jobs?

<p>Chapter 25 - Specifications for printing jobs (D)</p> Signup and view all the answers

How does a color management system contribute to print quality?

<p>By enabling consistent color reproduction across devices (B)</p> Signup and view all the answers

What does the term 'PPI' stand for in relation to monitor image resolution?

<p>Pixels per inch (D)</p> Signup and view all the answers

Which measure is NOT typically used to define image resolution?

<p>Density per image (DPI) (C)</p> Signup and view all the answers

How does a 300 pixels per inch image compare to a 72 pixels per inch image in terms of detail?

<p>It has significantly more detail. (B)</p> Signup and view all the answers

In what scenario is it essential to scan images at 600 pixels per inch?

<p>For hard-edged line art that is to be printed. (B)</p> Signup and view all the answers

What is the primary function of the film negatives in the conventional printing process?

<p>To expose the printing plates using light (B)</p> Signup and view all the answers

What does the registration process ensure during printing?

<p>Each printing plate aligns correctly to prevent color misalignment (D)</p> Signup and view all the answers

Which printing method requires the creation of offset plates using film?

<p>Conventional Printing (A)</p> Signup and view all the answers

How does the computer assist in the registration of printing plates?

<p>By reading registration marks and adjusting plate positions (A)</p> Signup and view all the answers

Which of the following is a method of output for electronic colour separations?

<p>Outputting to offset plates through a plate imagesetter (C)</p> Signup and view all the answers

What effect does light exposure have on the printing plates during the conventional printing process?

<p>It activates an ink-receptive coating on the plate (A)</p> Signup and view all the answers

What is primarily achieved with a blue-line print made from negatives?

<p>To verify the image position before actual printing (C)</p> Signup and view all the answers

What is one defining characteristic of digital printing compared to conventional printing?

<p>It enables printing directly from digital files (B)</p> Signup and view all the answers

What is one main advantage of digital printing over conventional printing processes?

<p>It provides high-quality printing from home. (D)</p> Signup and view all the answers

Why was the growth of digital printing slow initially in the 1990s?

<p>Limited technological advancements in printing. (A)</p> Signup and view all the answers

Which of the following limitations is commonly associated with digital printing?

<p>Difficulty in color matching, especially Pantone colors. (B)</p> Signup and view all the answers

Which color model is primarily used in digital printing?

<p>CMYK (Cyan, Magenta, Yellow, Black) (A)</p> Signup and view all the answers

What issue can arise with solid areas of color in digital prints?

<p>Tendency for unevenness of tone. (C)</p> Signup and view all the answers

What element is crucial for achieving accurate color reproduction in digital printing?

<p>Expert calibration of printing equipment. (A)</p> Signup and view all the answers

What common feature of digital printing is beneficial for short-run jobs?

<p>Absence of intermediate processes. (B)</p> Signup and view all the answers

What is a challenge faced when attempting to reproduce darker colors in digital printing?

<p>Colors tend to be muddy or dirty. (C)</p> Signup and view all the answers

Which statement accurately describes the difference between CMYK and spot color printing?

<p>CMYK relies on a combination of four primary colors for full color reproduction. (A)</p> Signup and view all the answers

What is a common disadvantage of using spot colors in printing?

<p>It is difficult to proof spot color jobs accurately with standard proofing systems. (D)</p> Signup and view all the answers

Why might a designer choose spot colors over CMYK for a project?

<p>Spot colors can match specific trademark colors more accurately. (B)</p> Signup and view all the answers

What is one advantage of using spot colors in conjunction with CMYK?

<p>It allows for the incorporation of unique colors beyond what CMYK can achieve. (D)</p> Signup and view all the answers

Which of the following statements about the economics of printing is true?

<p>Spot color printing can be more cost-effective when fewer than four colors are used. (D)</p> Signup and view all the answers

How can two or more spot colors enhance a printed piece?

<p>By allowing for wider tonal ranges and visual effects. (A)</p> Signup and view all the answers

What does the term 'screens, shades, or tints' refer to in the context of spot colors?

<p>Variations of a specific Pantone color. (A)</p> Signup and view all the answers

What is a key characteristic of images produced with spot colors?

<p>They appear more vivid and bright when compared to standard CMYK prints. (A)</p> Signup and view all the answers

What is the primary purpose of an image setter's RIP (Raster Image Processing)?

<p>To calculate halftone screens and create bitmap representations (A)</p> Signup and view all the answers

How does a Computer-to-Plate (CTP) image setter differ from traditional film image setters?

<p>It directly images onto aluminum or polyester surfaces instead of film (B)</p> Signup and view all the answers

What is a significant limitation of laser printers compared to image setters?

<p>Their resolution is limited by ink toner and paper type (B)</p> Signup and view all the answers

What defines the resolution difference between an image setter and a laser printer?

<p>Image setters typically have a resolution around 3600 dpi while laser printers average at 600 dpi (C)</p> Signup and view all the answers

Which component is essential for the functioning of pad printing?

<p>Silicon rubber pads for ink transfer (D)</p> Signup and view all the answers

What is a common application area for pad printing?

<p>Manufacturing industries (C)</p> Signup and view all the answers

What process follows when an image setter exposes the film?

<p>Development of the exposed film is required (A)</p> Signup and view all the answers

What aspect of CTP imagesetting affects its suitability for publishing?

<p>Files must not require changes after being handed to the printer (A)</p> Signup and view all the answers

Flashcards

PPI

Pixels per inch; a measurement of image resolution.

DPI

Dots per inch; a measurement of image resolution, often used for printing.

Image Resolution

Spacing of pixels in an image, measured in PPI.

Pixel

A tiny square of color that makes up a digital image.

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Resolution

The number of points or pixels packed into a set area (PPI or DPI).

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Image Resolution

The clarity and detail in images.

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Acquire required files

Get the necessary files for a project.

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Define PPI and DPI

Explain the meaning of pixels per inch (PPI) and dots per inch (DPI).

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PPI (Pixels per Inch)

A measurement of image resolution, indicating the number of pixels in an image per inch.

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Low Resolution

An image with a low number of pixels per inch (e.g., 72 PPI). Suitable for screens, but not high-quality printing.

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High Resolution

An image with a high number of pixels per inch (e.g., 300 PPI). Suitable for printing and high-quality output.

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Printing Resolution

The resolution required for printing, typically higher than for on-screen display.

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2:1 Rule

In printing, the digital image should have twice the pixels per inch of the line screen.

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Image File Format

The format in which a digital image is saved (e.g., TIFF or JPEG).

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Line Screen

The number of lines per inch used in printing.

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Film Imagesetter

A device that uses film to create printing plates for conventional printing.

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Plate Imagesetter

A device that directly creates printing plates digitally, often called Computer-to-Plate (CTP).

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CMYK System

A color model for printing using Cyan, Magenta, Yellow, and Key (Black) inks.

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Process Colors

The four colors in the CMYK system used for printing.

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Registration

The accurate alignment of printing plates to ensure a clear, sharp image.

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Blue-line Print

A proof print made from negatives to check image placement before printing.

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Digital Printing

Printing that uses digital technology directly, without film or plates.

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What is an advantage of the Plate Imagesetter?

It creates printing plates directly from digital files, eliminating the need for film and reducing processing time.

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What is Digital Printing?

A printing method where a digital file is directly transferred to the printing surface, eliminating pre-press processes like film and plates.

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What are the Advantages of Digital Printing?

Digital Printing offers speed, flexibility, cost-effectiveness for short runs, and minimal waste compared to traditional methods.

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What are the Common Colors in Digital Printing?

Digital printing typically uses Cyan, Magenta, Yellow, and Black (CMYK) toners, ink jets, or solid inks to create a wide range of colors.

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How are Colors Reproduced in Digital Printing?

Digital printing combines dots of CMYK colors on paper, like tiny pixels, to create the desired color.

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Why Might Color Matching Be Difficult in Digital Printing?

Matching exact colors, especially Pantone colors, can be challenging due to variations in printer calibration and environmental factors like temperature and humidity.

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Why are Solid Colors a Concern in Digital Printing?

Solid areas of color in digital printing can have unevenness in tone, requiring careful monitoring.

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What is a limitation of Digital Printing?

Digital printing typically doesn't have the capability to produce metallic colors without a separate process like screen printing.

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How did Digital Printing Evolve?

Digital Printing gradually replaced analog printing, with major players like Xerox, IBM, and Canon entering the market in the early 2000s.

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CMYK Color Model

A printing system using Cyan, Magenta, Yellow, and Key (Black) inks to create a wide range of colors. It's used in many printing presses.

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Spot Color

A single, premixed ink color used in printing. It's often used for logos or brand colors, creating precise shades.

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What is a duotone?

A grayscale image with a single spot color added for contrast or artistic effect. Often adds depth to an image.

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Why use spot color?

In printing, spot color is used to achieve precise colors, control costs (when using fewer colors), and sometimes for brand consistency.

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What's the difference between printing with CMYK and Spot Color?

CMYK uses a combination of four inks to create shades, while spot color uses a single premixed ink, offering a precise, single shade.

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What are the benefits of spot color?

Spot color offers accurate color matching, can cost less than CMYK (if using fewer than four colors), and provides precise color representation.

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What are some drawbacks of spot color?

Spot color has a limited color range compared to CMYK and can be expensive to proof accurately.

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What are tints or screens?

These are lighter shades or variations of a spot color, allowing more color options within the same spot color palette.

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Image Setter Resolution

Image setters typically have a higher resolution than laser printers, around 3600 dpi compared to 600 dpi. This is due to the high resolution of the film's emulsion side.

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Laser Printer Resolution Limit

The resolution of laser printers is limited by the ink toner/powder and the type of paper used.

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Image Setter Development

After the film is exposed in an image setter, it needs to be developed. This process is done using online film processors.

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Image Setter RIP Function

The RIP (raster image processing) in an image setter calculates halftone screens, creating a large bitmap representing each dot in the image as a one or zero.

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Image Setter for Multiple Colors

When printing multiple colors, an image setter creates a separate bitmap for each component color in the print.

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CTP (Computer-to-Plate)

CTP image setters, also called direct-to-plate image setters, work like film image setters but instead of exposing film, they directly image onto a printing plate using laser diodes.

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CTP Advantages

CTP image setters offer higher print quality by avoiding the need for multiple film processing steps, and they eliminate a costly and time-consuming step in the printing process.

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CTP and Proofing

CTP image setters produce digital proofs which aren't ideal for proofing traps (color overlaps). Hence, CTP is best suited for publishers who have complete confidence in the files being sent to the printer.

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Study Notes

Nitec in Visual Communication - Pre-Press Technology

  • Unit Code: DM3017FP
  • Version: 1.0
  • Dated: January 2020

Content Outline

  • Chapter 1: Acquire required files
  • Chapter 2: Halftones
  • Chapter 3: Colours
  • Chapter 4: Printing Processes
  • Chapter 5: File Formats
  • Chapter 6: Copyrights
  • Chapter 7: Texts Acquisition
  • Chapter 8: Layout, design and print job specifications
  • Chapter 9: Component of printed book
  • Chapter 10: Bookbinding methods
  • Chapter 11: Folding Schemes
  • Chapter 12: Correction marks for manuscript markup
  • Chapter 13: Image Trapping
  • Chapter 14: Markings for printing and finishing
  • Chapter 15: Imposition layout for offset printing
  • Chapter 16: Print embellishment processes
  • Chapter 17: Artwork and layout for restaurant menu
  • Chapter 18: Printing schemes
  • Chapter 19: Imposition planning
  • Chapter 20: DIN Paper Format
  • Chapter 21: Produce a mock-up for invitation/greeting card
  • Chapter 22: DTP output devices
  • Chapter 23: Pre-flight checks
  • Chapter 24: Design and plan the imposition and layout for greeting/invitation card
  • Chapter 25: Specifications for printing jobs
  • Chapter 26: Printing inks
  • Chapter 27: Liaising with printers
  • Chapter 28: Colour proofs print output
  • Chapter 29: Factors affecting reproduction of colours
  • Chapter 30: Check printing output (Proofing)
  • Chapter 31: Colour Proofs print output and print adjustments
  • Chapter 32: Determine print adjustment for artwork/originals
  • Chapter 33: Colour Management System
  • Chapter 34: Proofing and checking
  • Chapter 35: Portfolio presentation
  • Chapter 36: Portfolio presentation
  • Type Gauge
  • Line Thickness Gauge

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