Printing
Gbogbo ọrọ náà
Almost every printed thing you touched today - the cereal packet, the bus ticket, the magazine, the plastic shopping bag, the label on a drinks can - was made by one of a small family of printing processes, each suited to a particular material, quantity and quality. A graphic-products designer who cannot tell offset lithography from screen printing, or flexography from digital, cannot make sensible decisions about cost and quality, because the process chosen sets the price, the surface it can print on and how many copies are economic.
This note covers the main commercial printing techniques used to manufacture graphic products: offset lithography, screen printing, flexography, gravure and digital printing, plus the school-level processes (relief and screen printing) you may use practically. For each you will learn how it works in simple terms, what it prints best, and the all-important question of which print run - short, medium or very long - makes it the economic choice.
Ebumnobi
- show knowledge of printing techniques used in the manufacture of graphic products.
Nkuzi Olu
Gee ntị na nkuzi a na ngwa
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
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Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Printing. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Which printing process works on the principle that grease and water do not mix? A. Screen printing B. Offset lithography C. Gravure D. Flexography Answer: B
- A company needs only 60 full-colour leaflets quickly and may revise the design. Which process is most economic? A. Offset litho B. Gravure C. Digital printing D. Flexography Answer: C
- Which process is most suitable for printing a bold two-colour logo onto cotton T-shirts? A. Offset lithography B. Screen printing C. Gravure D. Digital toner printing Answer: B
- Which printing process uses an engraved cylinder with tiny recessed cells and is used for very long, high-quality runs such as millions of magazines? A. Flexography B. Screen printing C. Gravure D. Offset litho Answer: C
- What is the main reason digital printing is chosen for personalised mailshots where every letter is different? A. It is always the cheapest per copy B. It needs no plate, so each copy can carry different (variable) data C. It prints on any surface D. It is the highest quality process available Answer: B
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Printing? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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