PRE-PRESS OPERATIONS

Color Separation andPlate-Making

Color Separation

• is the process by which original artwork is separated into individual color components for printing. The components are cyan, magenta, yellow and black, known as CMYK.

SAMPLE: CMYK (original file)

SAMPLE: Cyan

SAMPLE: Magenta

SAMPLE: Yellow

SAMPLE: Black

Plate-Making Process1. negative-making using an Image

Setter machine2. Applying sensitizer to new plate3. Expose plates to UV in the plate-

making machine for 15 secs.4. Apply developer to exposed

plates5. Rinse6. Apply gum for preservation

Plate-Making Process

PRESS OPERATIONS

On Press

• This is the one part of the process that the graphic designer scarcely influences. It’s now time to say goodbye to the layouts, leaving the printing work in the experienced hands of the printer.

On Press

4 Colors (sheet-fed machine)

Parts of the Printing Machine

FEEDER (Paper-feeding unit)

Parts of the Printing Machine

FEEDER (Paper-feeding unit)

Parts of the Printing Machine

PRINTING UNIT

Parts of the Printing Machine

PRINTING UNIT

Parts of the Printing Machine

DELIVERY UNIT

Parts of the Printing Machine

CENTRAL PRINT CONSOLE (Adjustment panel)

POST-PRESS OPERATIONS

Binding andSpecial Printing Effects

Post-Press• All the processes that convert

the printed sheets into folded and bound publications are collectively known as the post-press or finishing operations.

• These can also include operations such as die-stamping, thermography, varnishing and laminating

Binding Methods• The first step in binding is to fold

the printed sheets into signatures.

• Next, the signatures are gathered and collated, folded, then cut.

• There are many methods of binding, it might be of help to list some of the more popular ones.

SADDLE STITCH

• Insert sections which are bound together with metal stitches through the fold of the spine.

SIDE-WIRE STITCHING

• Pages & cover are held together by metal stitches stabbed through from front to back, where the wire is clenched as shown.

WIRE-O BINDING

• Classic wire binding style with two separate covers

WIRE-O BINDING

• Gathered sections or leaves which are coated with hot glue on the spine and wrap-around cover is then applied.

Embossing

• Embossing uses a specially-made die under high pressure to form a raised three-dimensional impression that allows you to literally feel the design.

Debossing

• Design is heat-pressed into the surface of the paper with a die, creating depressions or indentations rather than raised impressions as in embossing.

Foil Stamping

• A heated die fuses the foil onto the paper, bonding the design to the surface. Hot foil stamping adds shimmer and texture to highlight specific text or images.

Foil Stamping

• A heated die fuses the foil onto the paper, bonding the design to the surface. Hot foil stamping adds shimmer and texture to highlight specific text or images.

Die-Cutting• The cutting of

stock with steel dies to remove a part or to leave a part attached so that it can be folded away from the rest of the sheet.

Die-Cutting

Laminations

Ultra-violet Lamination (UV) Matte Lamination Spot Lamination