Showing posts with label Print production research. Show all posts
Showing posts with label Print production research. Show all posts

Tuesday, 7 February 2012

Saturday, 15 October 2011

What is design for print - Design production - Research

The information i'd like to / could include

- Choose substrate appropriate for print type
- Work with CMYK when dealing with screen to print
- Work to the size of the print out
- Use finishes to add to a product
- Spell check before printing
- Always do a pre-flight check
- Produce mock ups before printing final pieces
- Get several printing quotes, early on.
Learn roughly what things cost (unit cost) the more the cheaper
- Be aware the stock will effect the vibrancy of the print out, if uncoated it will be less saturated than that on gloss.
- Always work with 300dpi - High resolution for print out
- Composition - slug, bleed, columns, layout of book (imposition) 
- Finishes
- File setup
- Printing techniques

....

Think -



Stock:
- Weights (gsm)
- Finish gloss / matt / silk / coated / uncoated
- Laid or wove
- Boards Carton
- Plastics and acetates

Paper types

Newsprint: Short life span, cheap, used in newspapers and comics
Antique: roughest finish offered on offset paper, used to add texture to publications such as annual reports.
Uncoated woodfree: Largest printing and writing paper category - e.g office paper and photocopy paper
Mechanical: Produced using wood pulp, for short term use, eg newspaper
Art board: Uncoated board, cover stock.
Art: High quality paper, good printing surface, especially for half tones and where detail is important. Colour printing, magazines.
Cast coated: High - gloss finish 
Chromo: Waterproof coating on one side, good for embossing. Used for labels, wrappings and covers.
Cartridge: Thick white paper used for pencil and ink drawings. 
Grey board: Lined or unlined board made from waste paper. Packaging material. 

Size:

- A sizes
- SRA - oversize A versions
- Standard ISO sizes
- Imperial (North America) versus metric (Rest of world)
- Tabloid, Braodsheet, Berliner
- Envelope 'C' sizes
- DL size - Regular envelope


Print methods:

-Lithographic
- Gravure
- Screen print
- Flexography
- Pad - printing
- Six colour

Lithography:
Uses metal plate to transfer a design via a rubber blanket to the stock. Typically four colour (CMYK)
Wash print:
Allows most delicate of colours to be applyed to a substrate. Uses highly diluted ink to produce a flat colour which is subtle. 
Silk screen:
Imposes an image onto a substrate by forcing ink through a screen has has a design. Slow process, high quality. 
Letterpress:
Relief printing in which an inked raised surface is forced against a substrate. First form of commercial printing. Unique in its slight indentations through varying prints.
Hot metal printing:
The process of casting type in lines of molten metal. 
Thermography:
Used to produce raised letters on substrates. Powder dispensed onto sheet of printed paper, the powder sticks, when pushed through an oven fuses with substrate and leaves a raised surface.



Finishes

- Laminate - gloss / matt
- Foil blocking
- Embossing / de-bossing
- Spot W varnish

- Binding
- Folding and creasing
- Die stamping / drilling



Wednesday, 12 October 2011

OUGD201 - 7 things to know about print

Print seminar - 7 Things to know about print

Litho is the most common form of printing

The 7 area
- Colour models
- Formats
- Stock
- Processes
- Finishing
- Costing
- Art work

Colour models (e.g CMYK)
The way colour is generated in print is completely different to screen models
- CMYK
- RGB
- Hexachrome
- Spot colour
- PMS pantone matching system

Formats
Options and limitations help you to be creative and more economical 
- A sizes
- SRA - oversize A versions
- Standard ISO sizes
- Imperial (North America) versus metric (Rest of world)
- Tabloid, Braodsheet, Berliner
- Envelope 'C' sizes
- DL size - Regular envelope

Stock
The correct weight and finish of a paper of substrate are crucial to the feel of a job
- Weights (gsm)
- Finish gloss / matt / silk / coated / uncoated
- Laid or wove
- Boards Carton
- Plastics and acetates

Art work
- Spell check
- Document set up
- File formats
- Spell check
- Colour specification
- Printer marks
- Pre-flight check - Software, suggests changes for print
- Mock ups - helps client understand, no surprises
- Proof
- Sign off (Really important)

Preparing artwork correctly for print is the sign of a proffesional. It will save you and the printer a lot of grief when done correctly. Always get the client to sign off the proof, it offers some insurance if things go wrong.

Print processes
-Lithographic
- Gravure
- Screen print
- Flexography
- Pad - printing
- Six colour
- Laminate - gloss / matt
- Foil blocking
- Embossing / de-bossing
- Spot W varnish

Finishing
- Binding
- Folding and creasing
- Die stamping / drilling

Closely linked to the print process

- Cost
- Get a quote early
- Identical specification for three print estimators to work on
- Learn roughly what things cost (unit cost) the more the cheaper
- Understand viable minimum quantities
- Extras / Authors corrections
- Delivery
- Be aware of the impact special sizes / finishes have an overall cost. Sometimes a finish can cost nearly as much as the rest of the print.

Binding:
- Burst binding
- Swiss binding
- Otabinding
- Pur board
- Perfect binding
- Thread sewing
- Case binding
- Flexi binding 
- 2up perfect binding

Tuesday, 11 October 2011

What is design or print - Finishing - Experimenting with Embossing

A while ago now, I used to attend craft classes in which the establishment provided equipment, I remembered I used something called heat embossing which involved using a special pen / glue, powder and heat gun. The pen drawn onto any material, the glue from the pen being clear, the powder is then poured over it, excess poured off, and the heat gun blown over it. Eventually the metallic powder heats up and bonds with the material. Its a really nice effect, and is very flexible considering any shape can be drawn. Although, small, intricate detail is hard to achieve.


Just a few logo designs - I could possibly use this within my final outcomes within the task and set brief


Tuesday, 4 October 2011

Print workshop - Identifying print methods

We were asked to bring in several examples of prints with us to the session. We each got into a small group , and with a view finder, to examine each of the print pieces to try and understand the processes they under went, and how correctly grammatically define a piece of work.


Just a few images from todays session:


Notes taken explaining what we think each of the pieces are in regard to print and method.

Getting a closer look to get a better understanding, the above image CMYK on flexo.

CMYK foiled blocked.


By understanding the processes, the more I know how to manipulate such a print method.
I feel I'm really gaining some understanding of print throughout these workshops, I suddenly want to try out a lot more new and interesting print methods within my own work. By doing so I'll be able to understand the grammatical terms better as I'll have personal experience with doing them, and my work outcomes will be of a professional standard.

Tuesday, 27 September 2011

Print seminar

Print Seminar

Notes taken


Some print examples







Kinds: Rotary, digital, screen, and pad.

Rotary:
Plates are wrapped around a cylinder, an automates process and the material to be printed can be sheet fed or on a roll. 

Plate > Blanket cylinder > Impression Cylinder



3 Main types: 
- Lithography
- Rotogravure
- Flexography

Offset Lithography - Onto a rubber roller
Etched aluminium plates wrapped around a cylinder transfer ink to an 'offset' ribber blanket roller and then to a print surface. Sheet or web fed.

WEDNESDAY 19TH - PRINTERS VISIT (Keep date free)


Rotogravure / photogravure 

Copper plates (etches deeper, plates last longer) transfer ink directly to print surface, usually rolls.
Plates are more durable and so are good for long print runs
Typical gravure job - Lino flooring, newspaper if a long run

Flexography

Rubber plate, relief printing, silicon surface e.g Crisp packet
A positive mirror image rubber polymer plate, on a cylinder, transfers 'sticky' ink directly to print surface. Usually roll fed.
E.g Chocolate foiled wrappers, bottle labels

Litho - planographic (Flat)
Rotogravure - Intaglio (Etched)
Flexography - Relief (Raised surface)

Digital printing

Repproduction of images by translating digital code direct from a computer to a material without an intermediate physical process. 
'Rip' - Transfers from computer to printer  (software processes it)
Digital printing for mock ups, to check stock and layout

Screen print
A printmaking technique that uses a woven mesh template.

PAD printing
A process that transfers 2d image to a 3d object
e.g - Pens, flasks, gold balls etc


Colours:

Grayscale : Black and white continuous tone
Duo tone: Continuous tone image is printed in 2 or more spot colours
Spot colour: One or more specially mixed RGB colours
Mono - One colour





C, U , M, coated, uncoated, matte
dots = accurately reproduced in CMYK
Process guide - CMYK - first page shown in solids and tints. DE: Europe
Colour bridge - 1089 colours, shows closest CYMK next to each of the solid RGB colours.
Pantone books provide colours for screen too, for web design.
The guide really showed me how to use pantone swatches, Unfortunately I missed the colour theory session in my first year in which class mates were shown how to use them, I felt like i'd missed out. This tutorial has given me a clearer understanding.



An intro into colour theory

Monochromatic - Adding light and dark to create a tone of a colour
Analogues - Colours next to each other on the colour wheel
Complementary - Colours directly opposite each other on the colour wheel
Compliments: Colours of the same value but are opposite hues, when desaturated, they are the same shade of grey. Not comfortable to look at, line between two seems to wobble. Not brilliant colours to work with.
If using bright colours and need a highlight or shadow, stick to using white or black.