An article may include a biodata page defining a perimeter including an edge and a hinge layer attached to at least a portion of the biodata page. The hinge layer comprises a cross-linked polyurethane. In some examples, the hinge layer may include a cross-linked thermoset polyurethane.

An article may include a biodata page defining a perimeter including an edge and a hinge layer attached to at least a portion of the biodata page. The hinge layer comprises a cross-linked polyurethane. In some examples, the hinge layer may include a cross-linked thermoset polyurethane.

Personalizing a multipage security document by placing a laser-alterable ink layer on a personalization area of an edge of each of the sequence of pages. The method includes revealing a portion of the personalization area of each of the sequence of pages relative to a pages above said each of the sequence of pages such that the personalization portion of each two consecutive pages in said sequence of pages are located adjacent to one another thereby producing a two-dimensional multi-page personalization section, and creating a pattern on the two-dimensional multi-page personalization section by altering the inked personalization area in the revealed portion of each page of said sequence of pages by exposing said revealed portions to a laser, such that a pattern is visible when the revealed portions of a sequence of pages are viewed simultaneously.

Personalizing a multipage security document by placing a laser-alterable ink layer on a personalization area of an edge of each of the sequence of pages. The method includes revealing a portion of the personalization area of each of the sequence of pages relative to a pages above said each of the sequence of pages such that the personalization portion of each two consecutive pages in said sequence of pages are located adjacent to one another thereby producing a two-dimensional multi-page personalization section, and creating a pattern on the two-dimensional multi-page personalization section by altering the inked personalization area in the revealed portion of each page of said sequence of pages by exposing said revealed portions to a laser, such that a pattern is visible when the revealed portions of a sequence of pages are viewed simultaneously.

A security document includes a first ink layer and a second ink layer. The first ink layer includes a first color in a first color zone and a second color in a second color zone offset from the first color zone in a first direction, and a first blended color including a mixture of the first and second colors in a first blended color zone between the first color zone and the second color zone. The second ink layer includes a third color in a third color zone and a fourth color in a fourth color zone offset from the third color zone in a second direction, and a second blended color including a mixture of the third and fourth colors in a second blended color zone between the third color zone and the fourth color zone. The first direction is different than the second direction.

Printed matter having a continuous color pattern, such as a high-definition fine printed design pattern. The printed matter has a printed portion on a surface of a printing substrate. The printed portion is formed of an ink and visually recognized as a continuous color pattern. Further, the printed portion is constituted of a combination of a plurality of lines each being formed of an ink and having a line width of 100 m or less. Of the plurality of lines, two adjacent lines have a spacing there between which is 50 times or less the line width of the line that is the narrower one of the two lines defining the spacing.

An anti-counterfeiting pattern having an optically variable structure, comprising lithographic lines and gravure blind embossed relief lines printed on a carrier. The lithographic lines are a set of lithographic curve lines having a curvature, the widths of the lithographic curve lines changing from thick to thin, or thin to thick. The gravure blind embossed relief lines are a set of curve lines corresponding to the lithographic lines, and having the same curvature. The relief lines are overprinted on the lithographic lines with a width variation identical to that of said lithographic lines. Accurate overprinting of the two printing types forms a curved relief structure wherein the width of the lines changes continuously. When a printed product is rotated and observed, a continuously variable optical effect will be seen, which is visual, readily to identify, anti-copying and difficult to forgery.

An anti-counterfeiting pattern having an optically variable structure, comprising lithographic lines and gravure blind embossed relief lines printed on a carrier. The lithographic lines are a set of lithographic curve lines having a curvature, the widths of the lithographic curve lines changing from thick to thin, or thin to thick. The gravure blind embossed relief lines are a set of curve lines corresponding to the lithographic lines, and having the same curvature. The relief lines are overprinted on the lithographic lines with a width variation identical to that of said lithographic lines. Accurate overprinting of the two printing types forms a curved relief structure wherein the width of the lines changes continuously. When a printed product is rotated and observed, a continuously variable optical effect will be seen, which is visual, readily to identify, anti-copying and difficult to forgery.

A flexible band configured to be connected to a data page and to a booklet, wherein the flexible band extends along a main direction and includes an upper side and a lower side as well as a plurality of apertures, wherein the flexible band includes at least one security element, wherein the security element is provided by at least one security print pattern; or the security element is provided by at least one security thread; or the security element is provided by at least one security print pattern in combination with at least one security thread.

A flexible band configured to be connected to a data page and to a booklet, wherein the flexible band extends along a main direction and includes an upper side and a lower side as well as a plurality of apertures, wherein the flexible band includes at least one security element, wherein the security element is provided by at least one security print pattern; or the security element is provided by at least one security thread; or the security element is provided by at least one security print pattern in combination with at least one security thread.