Question

Which of the following is not Glaze application machine?

• A. Water fall
• B. The Bell
• C. Rotating Disc
• D. Digital printing machine

Hint:

Glaze application machines apply glaze coating, while digital printing machines are mainly used for decorative printing on ceramic surfaces.

Answer 1

The Correct Option is D

Concept: Glaze application machines are used to apply a layer of glaze slurry on the ceramic surface. Glaze can be applied by different techniques such as waterfall glazing, bell glazing, spraying, disc application, etc.

Step 1: Understand glaze application.
Glaze is a glassy coating applied on ceramic products before firing. \[ \text{Ceramic body} + \text{Glaze coating} \rightarrow \text{Glossy/vitrified surface after firing} \]

Step 2: Waterfall glazing is a glaze application method.
In this method, a curtain or waterfall of glaze falls on the surface of tiles or ceramic products. So, Water fall is a glaze application machine.

Step 3: The Bell is also used for glaze application.
In bell glazing, glaze is spread uniformly using a bell-shaped device. So, The Bell is also a glaze application machine.

Step 4: Rotating Disc is also used for glaze application.
The rotating disc spreads glaze by centrifugal action. So, Rotating Disc is also a glaze application machine.

Step 5: Digital printing machine is not mainly a glaze application machine.
It is used for printing decorative designs, patterns, and images on ceramic tiles. \[ \text{Digital printing} \rightarrow \text{Decoration/design application} \] It does not primarily apply glaze like waterfall, bell, or rotating disc systems. Therefore, the option which is not a glaze application machine is: \[ \boxed{\text{Digital printing machine}} \]