As per Section 6 of Negotiable instrument Act If the endorser signs (on certain negotiable instrument or check) his name only, the endorsement is said to be "in blank" If he adds a direction to pay the amount mentioned in the instrument to, or to the order of, a specified person, the endorsement is said to be "in full", and the person so specified is called the "endorsee" of the instrument. Thus endorsement of a check or other negotiable paper without naming the person to whom it would be paid is called Blank Endorsement ----------------- ----------------- | 
