Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Reexamination Certificate
2000-03-31
2001-10-30
Jones, Deborah (Department: 1775)
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
C428S013000, C428S203000, C428S204000, C428S206000, C428S207000, C430S001000, C430S002000, C359S001000, C359S003000
Reexamination Certificate
active
06309735
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates generally to a subject plate for recording holograms by light exposure, a hologram-making method, and a hologram-recorded article. In particular, the present invention is concerned with a subject plate for recording holograms by photography, which enables a multiplicity of holograms to be recorded in a stable manner, a hologram-making method, and a hologram-recorded article.
To record a hologram for each subject by light exposure, it is required that relative positions of the subject, a hologram-recording photosensitive material, and a laser light source be kept in precise alignment. To obtain a multiplicity of identical holograms by light exposure, such awkward, labor-intensive and time-consuming alignment of relative positions must be repeated over and over.
Also available is a method of fabricating one hologram plate which is used to replicate a multiplicity of identical holograms in a continuous manner. With this method, however, it is impossible to replicate a multiplicity of holograms for a variety of subjects other than a previously prepared subject or in different colors.
SUMMARY OF THE INVENTION
In view of the aforesaid problems associated with the prior art, an object of the present invention is to provide a subject plate for recording holograms by light exposure, which can contain a variety of subjects fixed in a block, so that a multiplicity of identical holograms, or different holograms which are reconstructible by exposure to reconstructing light, can be recorded in a simple, stable yet continuous manner, as is the case with a hologram-replicating method.
Another object of the present invention is to provide a hologram-making method using a hologram-recording subject plate comprising a block with a variety of subjects fixedly contained in it to readily, stably and continuously record a multiplicity of identical holograms, or different holograms which are reconstructible by exposure to reconstructing light, and a hologram-recorded article made by such a method.
In order to accomplish the aforesaid objects, the present invention provides a subject plate for recording a hologram characterized by comprising a transparent solid block, in which a subject for recording a hologram is contained.
In this case, the solid block may be integrally provided on a front surface thereof with a transparent protective body, and the subject is integrally provided on a back surface thereof with a colorless transparent body, a colored transparent body or a black absorption body, or any one of a reflecting mirror, a scattering plate, a colored plate or a patterned plate, or a hologram.
As the subject to be contained, use may also be made of a plane or curved mirror.
The present invention also provides a hologram-making method by irradiating a photosensitive material film, which is in close contact with a subject plate for recording a hologram, with light to record the hologram therein, characterized in that said photosensitive material film is comprised of a photosensitive material layer having support film layers located on both sides thereof, one support film layer is released from said photosensitive material film while said photosensitive material film is fed, said photosensitive material film is successively applied onto said subject plate with the thus exposed side of said photosensitive material film located not opposite to said subject plate, while the other side of said photosensitive material film opposite to said subject plate is squeezed by a roller, said photosensitive material film is irradiated with light, and a leading end of said photosensitive material film is successively released from said subject plate while said photosensitive material film is retained by a roller, followed by rolling of said photosensitive material film.
Further, the present invention provides a hologram-making method by irradiating a photosensitive material film, which is in close contact with a subject plate for recording a hologram, with light to record the hologram therein, characterized in that said photosensitive material film is comprised of a photosensitive material layer having support film layers located on both sides thereof, one support film layer is released from said photosensitive material film while said photosensitive film material is fed, said photosensitive film material is successively applied onto said subject plate with the thus exposed side of said photosensitive material film located not opposite to said subject plate, while the other side of said photosensitive material film opposite to said subject plate is squeezed by a roller, said photosensitive material film is irradiated with light, a leading end of said photosensitive material film is successively released from said subject plate while said photosensitive material film is retained by a roller, and a color tuning film is successively applied onto an exposed surface of the thus released photosensitive material film, thereby widening a bandwidth of diffracted wavelength, followed by rolling of said photosensitive material film.
In these methods, the hologram-recording subject plate comprises a transparent solid block, in which a subject for recording a hologram is contained.
In the subject plate, it is desired that the solid block is integrally provided on a front surface thereof with a transparent protective body, and the subject is integrally provided on a back surface thereof with a colorless transparent body, a colored transparent body or a black absorption body, or any one of a reflecting mirror, a scattering plate, a colored plate or a patterned plate, or a combination of two or more thereof, or a hologram.
As the subject use may also be made of a plane or curved mirror.
In either method, the light for irradiating said photosensitive material film may comprise a plurality of light of different wavelengths.
Still further, the present invention provides a hologram-recorded article characterized in that a continuous form of photosensitive material film comprising at least one adhesive or self-adhesive layer and at least one photosensitive material layer and having support film layers on both sides thereof is periodically provided thereon with hologram-recorded areas at a constant inter-frame interval, said hologram-recorded areas being of constant size as viewed in a longitudinal direction of said film.
Preferably in this case, a volume phase type hologram has been recorded in said hologram-recorded areas. At least the hologram-recorded areas have preferably been treated to widen a bandwidth of diffracted wavelength. It is also preferable that one of the support film layers comprise, in order from the photosensitive layer side, a colored or patterned transparent or opaque film, an adhesive or self-adhesive layer, and a releasable cover film.
Still further, the present invention provides a hologram-recorded article characterized by being a laminate comprising, in order from a hologram-viewing side, a protective film, a hologram-recorded layer, a colored or patterned transparent or opaque film, an adhesive or self-adhesive layer, and a releasable cover film, which have been laminated together with or without an adhesive or self-adhesive layer between them.
In this case, the article, from which the cover film has been released, may be applied at the adhesive or self-adhesive layer located thereon onto a printed article.
The hologram-recorded layer may have a wavelength multiplex volume phase type hologram recorded thereon, and has been treated to widen a bandwidth of diffracted wavelength.
Still further, the present invention provides a hologram-recorded article characterized in that it has a wavelength multiplex volume phase type hologram recorded thereon, and has been treated to widen a bandwidth of diffracted wavelength.
With a hologram-recording subject plate comprising a transparent solid block containing a hologram-recording subject according to the present invention, it is possible to record a multiplicity of identical holograms in an easy, stable yet co
Anegawa Takehiko
Morii Akio
Tahara Shigehiko
Ueda Kenji
Bahta Abraham
Dai Nippon Printing Co. Ltd.
Jones Deborah
Sughrue Mion Zinn Macpeak & Seas, PLLC
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