Printing – Printing members – Blanks and processes
Patent
1996-11-12
1998-06-30
Eickholt, Eugene H.
Printing
Printing members
Blanks and processes
430905, B41K 134
Patent
active
057718083
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a stamp material suitable for simply obtaining a seal having a desired print of seal, a stamp and the like. Further, the present invention relates to a stamp making method using the stamp material and a stamp obtained by the method.
BACKGROUND ART
Conventionally, there is commercially available an apparatus called a seal making apparatus or a stamp making apparatus by which seals and stamps such rubber stamps and the like (which are referred to as "stamps" as a whole in the specification) can be easily made even by persons other than specialists. A stamp material used to these apparatuses is composed of a face of a seal forming member and a stamp stock for holding it and they are prepared as separate members. The face of a seal forming member is composed of a base member and an ultraviolet rays curing resin secured to the base member and a face of a seal is formed by the ultraviolet rays curing resin. Although the ultraviolet rays curing resin has a predetermined hardness and brittleness in a steady state, the resin has such a property that when the resin is irradiated with ultraviolet rays, it has an increased hardness and is provided with toughness. Although the ultraviolet rays curing resin is soluble to water in the steady state it is made insoluble to water by being irradiated with the ultraviolet rays.
When a stamp is made using the stamp material, there is previously prepared a negative film to which a desired image of a seal is photographed by making use of an exposure unit of the apparatus and ultraviolet rays are exposed to the ultraviolet rays curing resin of the stamp material using the negative film as a mask. Since the portion of the ultraviolet rays curing resin corresponding to the image of the seal is cured by the exposure, the uncured portion of the ultraviolet rays curing resin is scraped off and washed away in water by a brush. It is preferable to irradiate ultraviolet rays to the ultraviolet rays curing resin again to thereby stabilize the face of a seal and thereafter the stamp is finished by mounting the face of a seal forming member on a stamp stock.
In the above conventional stamp making method, however, even the uncured portion of the ultraviolet rays curing resin has a predetermined hardness and brittleness, even if the uncured portion is washed away while being softened in water, a long time is needed as well as a complex job is required to perfectly wash away the uncured portion up to its minute parts. Moreover, when there is also a problem that the cured portion may be damaged by being excessively rubbed with the brush or the like when a worker is not accustomed with the job and further there is a possibility that the rough surface of the cured portion to which ink is to be adhered (through which ink is placed on the face of the seal without being shed) may be ground smoothly.
Thus, an object of the present invention is to provide a stamp material which permits the uncured portion of a photosensitive resin cured by a light to be simply removed without the need of skill while remaining the cured portion thereof without damaging it, a stamp making method using the stamp material and a stamp manufactured by the stamp making method.
DISCLOSURE OF THE INVENTION
An invention of a stamp material of claim 1 is characterized by a face of a seal forming member having a photosensitive resin which is changed from a liquid to a solid in response to a received light and a stamp stock for holding the face of a seal forming member. According to the arrangement, the photoconductive resin is the liquid before it is irradiated with the light and changed to the solid after the light is irradiated. Thus, when a face of a seal is arranged by subjecting the portion of the photoconductive resin corresponding to the image of a print of seal, the portion of the face of the seal is cured and the portion other than the face of the seal flows out. As a result, the portion other than the face of the seal can be easily removed from the portion of the f
REFERENCES:
patent: 3615450 (1971-10-01), Werber et al.
patent: 3806575 (1974-04-01), Fishburn
patent: 4323637 (1982-04-01), Chen et al.
patent: 4423135 (1983-12-01), Chen et al.
patent: 4714957 (1987-12-01), Takano
patent: 4985301 (1991-01-01), Butter et al.
patent: 5085514 (1992-02-01), Mallik et al.
Kodaira Youichi
Kuriyama Hiroshi
Eickholt Eugene H.
Seiko Epson Corporation
LandOfFree
Stamp material, stamp making method using the stamp material and does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stamp material, stamp making method using the stamp material and, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stamp material, stamp making method using the stamp material and will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1849026