Graphic pattern or the like and method of producing the same

Claim 1

A graphic pattern for imprinting substrates, especially paper currency, stamps or the like, comprising a substrate having thereon lines in the form of lengthwise extending color mounds, said lines comprising a line pattern which is substantially uniform at least in predetermined field sections of the substrate, said line pattern comprising relatively closely situated non-intersecting and non-contacting lines, the ratio between the height of the color mounds and the spacing of the color mounds forming the lines is such that when viewing the pattern from below a predetermined boundary inclination angle the base of valleys between the color mounds is non-visible, at least certain of said lines being provided with interruptions, all of the lines at least at the regions neighboring said interruptions extending essentially in the same direction, the substrate at said interruptions being devoid of color mounds, said interruptions having a width less than the spacing between the spacing of the majority of the color mounds forming the lines to thus render more difficult visible detection of the interruptions from a viewing angle above the predetermined boundary inclination angle while rendering the substrate at such interruptions more readily visible at a viewing angle below the predetermined boundary inclination angle due to increased contrast between the color mounds of the lines and the substrate at the interruptions.

Claim 27

A method of producing a graphic pattern for a substrate, comprising the steps of: providing a substrate; imprinting portions of the substrate with color mounds in the form of extended non-intersecting neighboring lines, at given locations between such lines there are provided portions devoid of color, such that in one position of the substrate the eye of the observer does not perceive the portions devoid of color and in another position the eye of the observer perceives the portions devoid of color; and providing at least certain of said lines with interruptions, all of the lines at least at the regions neighboring said interruptions extending essentially in the same direction, the substrate at said interruptions being devoid of color mounds, said interruptions having a width less than the spacing between the spacing of the majority of the color mounds forming the lines to thus render more difficult visible detection of the interruptions from a viewing angle above a predetermined boundary inclination angle while rendering the substrate at such interruptions more readily visible at a viewing angle below the predetermined boundary inclination angle due to increased contrast between the color mounds of the lines and the substrate at the interruptions.

Claim 28

A method of producing a graphic pattern for a substrate, comprising the steps of: providing a substrate; imprinting portions of the substrate with color mounds in the form of extended non-intersecting neighboring lines, at given locations between such lines there are provided portions devoid of color, such that in one position of the substrate the eye of the observer does not perceive the portions devoid of color and in another position the eye of the observer perceives the portions devoid of color; and providing at least certain of said lines with interruptions, all of the lines at least at the regions neighboring said interruptions extending essentially in the same direction, the substrate at said interruptions being devoid of color mounds, said interruptions having a width less than the spacing between the spacing of the majority of the color mounds forming the lines to thus render more difficult visible detection of the interruptions from a viewing angle above a predetermined boundary inclination angle while rendering the substrate at such interruptions more readily visible at a viewing angle below the predetermined boundary inclination angle due to increased contrast between the color mounds of the lines and the substrate at the interruptions.