Paper for preventing outflow of document and method for manufacturing thereof

Printing paper for security, comprising:

• a first raw paper sheet and a second raw paper sheet;
• a metal thin film that is formed on a side of the second raw paper sheet;
• and
• at least one tag for detection that is formed between the metal thin film and a side of the first raw paper sheet and includes a magnetic material.

Printing paper for security comprising:

• a first raw paper sheet and a second raw paper sheet;
• a first printing layer and a second printing layer that are sequentially printed on a side of the first raw paper sheet;
• a third printing layer and a fourth printing layer that are sequentially printed on a side of the second raw paper sheet;
• and
• at least one tag for detection that is formed between the second printing layer and the fourth printing layer and includes a magnetic material.

A method of producing printing paper for security, the method comprising:

• forming a first hiding layer on a side of a first raw paper sheet;
• forming a second hiding layer on a side of a second raw paper sheet;
• and
• laminating the first raw paper sheet and the second raw paper sheet while a tag for detection including a magnetic material is provided between the first hiding layer and the second hiding layer.

A method of producing printing paper for security, the method comprising:

• attaching a tag for detection including a magnetic material on a side of a first raw paper sheet;
• forming a metal thin film on a side of a second raw paper sheet;
• and
• laminating a side of the first raw paper sheet and a side of the second raw paper sheet so that the tag for detection and the metal thin film are in contact.

A method of producing printing paper for security, the method comprising:

• sequentially printing a first printing layer and a second printing layer on a side of a first raw paper sheet;
• sequentially printing a third printing layer and a fourth printing layer on a side of a second raw paper sheet;
• and
• laminating the first raw paper sheet and the second raw paper sheet while at least one tag for detection including a magnetic material is provided between the second printing layer and the fourth printing layer.

Printing paper for security, comprising:

• a first raw paper sheet and a second raw paper sheet;
• at least one tag for detection that is formed between the first raw paper sheet and the second raw paper sheet and includes a magnetic material;
• and
• a hiding layer that is formed between the first raw paper sheet and the tag for detection.

Printing paper for security, comprising:

• a first raw paper sheet and a second raw paper sheet;
• at least one tag for detection that is formed between the first raw paper sheet and the second raw paper sheet and includes a magnetic material;
• and
• a first printing layer and a second printing layer that are sequentially printed between the first raw paper sheet and the tag for detection.