Adobe Illustrator | Beginner's Guide- Session-4 Use of Bleed in Printing

In this session You will Learn how to set bleed and what is the use of bleed in Printing.

Use of bleed in Printing

In printing, bleed is printing that goes beyond the edge of where the sheet will be trimmed. In other words, the bleed is the area to be trimmed off. This option is used for perfect edges in printing.

when we setup a new document  we will find bleed option. In Printing,  we use this option to get perfect edges. we have to enter the value of bleed TOP , BOTTOM , LEFT & RIGHT.
You will find a link option also, if link is on then all values will be same, if link is off you can enter different values. but we will on the link and set same values. then press ok

now you will see a red line outside the page, this is the bleed area. Increase your design size and cover the bleed area.

make it sure keep design's that part in bleed area which is unimportant. because it will trimmed off and you will find perfect edges.

To check this save your file as pdf. Go to file menu--> Save As...
give a file name and set file type Pdf
 Save Adobe PDF dialoge box will open.

select Mark & bleeds option ---> Trim Marks
then save. 
now open pdf file which is saved in folder.

Also watch video session.

https://youtu.be/4n-XlQX1h-0