The offset printing plate is made of 

(A) Aluminium 

(B) Copper 

(C) Rubber 

(D) Steel

Correct Ans: (A)

Explanation:

Offset printing, a widely used technique in the printing industry, relies on aluminium plates for image transfer. Printers prefer aluminium because it is lightweight, corrosion-resistant, and highly durable. Additionally, it offers sharp image reproduction, making it ideal for newspapers, magazines, and commercial prints.

Unlike rubber, copper, or steel, aluminium provides consistent print quality over multiple impressions. Moreover, it withstands chemical treatments, which improve ink absorption and water resistance. Since aluminium plates are recyclable, they contribute to environmentally friendly printing processes.

Furthermore, aluminium plates ensure faster printing speeds and minimal distortion, which increases efficiency in large-scale production. Additionally, they require less maintenance, reducing operational costs for publishers and businesses.

In comparison, rubber lacks precision, copper tends to oxidize, and steel is too rigid for detailed prints. Therefore, aluminium remains the preferred choice in modern printing. Ultimately, its affordability, efficiency, and high-quality output make it the most reliable material for offset printing.