JPS61204766U

JPS61204766U -

Info

Publication number: JPS61204766U
Application number: JP8916485U
Authority: JP
Priority date: 1985-06-13
Filing date: 1985-06-13
Publication date: 1986-12-24

Description

[Brief explanation of the drawing]

第１図は本考案に係わる複写防止策を施した画
像形成体の断面図、第２図は本考案の他の実施例
を示す断面図、第３図は実施例における難複写画
像用インキの分光反射特性を示す線図、第４，５
図は実施例における迷彩地紋画像用インキの分光
反射特性をそれぞれ示す線図、第６図は実施例で
用いた複写機の光源のエネルギー分布を示す線図
である。１…シート状基板、３…迷彩地紋画像、５…難
複写画像。 FIG. 1 is a cross-sectional view of an image forming body with anti-copying measures according to the present invention, FIG. 2 is a cross-sectional view showing another embodiment of the present invention, and FIG. 3 is a cross-sectional view of an ink for hard-to-copy images according to the embodiment. Diagram showing spectral reflection characteristics, 4th and 5th
The figures are diagrams showing the spectral reflection characteristics of the camouflage tint block image ink in the examples, and FIG. 6 is a diagram showing the energy distribution of the light source of the copying machine used in the examples. 1... Sheet-like substrate, 3... Camouflage background pattern image, 5... Difficult to copy image.

Claims

[Scope of Claim for Utility Model Registration] (1) A difficult-to-copy image consisting of characters or designs that display content that is not desired to be copied, and an ink of a different color from that of the difficult-to-copy image so as to overlap with the difficult-to-copy image. The camouflage tint pattern image is printed with a camouflage tint pattern image, and the hard-to-copy image is easily recognizable to the naked eye, but is printed with an ink with reflective spectral characteristics that is difficult to recognize with the photoreceptor of a copying machine. Although it is difficult to recognize than the above-mentioned difficult-to-copy image, it has reflection spectral characteristics that are easy to recognize on the photoreceptor of the above-mentioned copying machine, and the linearity of the constituent characters or patterns of the above-mentioned difficult-to-copy image and the constituent characters or pictures of the above-mentioned camouflage background pattern image are easily recognized. An image forming body provided with a copy prevention measure, characterized in that the relationship with the linear pattern and the pitch between the background patterns make it impossible to read the difficult-to-copy image when copying. (2) The linearity of the constituent characters or pictures of the difficult-to-copy image is equivalent to the linearity of the constituent characters or pictures of the camouflage tint block, and the pitch between the tints is 3.0 mm or less, the first claim for utility model registration. Image-forming body described in Section 2. (3) The image forming body according to claim 1, wherein the ink forming the difficult-to-copy image is a blue-based color, and the ink forming the camouflage background pattern image is a yellow, yellow-green, or pink-based color.