US5358582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
ID card and method of its production
Assignee: Konica Minolta Inc
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Filing: 1992-04-21
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Granted: 1994-10-25
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Expires: 2012-04-21
Abstract
Abstract The object of the present invention is to provide a method of simply producing an ID card which can provide the Id card with character information shared by the same kind of ID cards issued in large numbers, and an ID card which offers improved protection of the gradation image formed on the image-receiving layer and which is difficult to forge or alter. The ID card is characterized in that a transparent resin sheet having character information shared by the same kind of ID cards is provided on the surface of an image-receiving layer which has a gradation image and character-information-bearing image and which has been formed on the support. The method of producing an ID card of the present invention is characterized in that a transparent resin sheet having character information shared by the same kind of ID cards is provided by hot stamping in the gradation image forming region of the image-receiving layer which has a gradation image and character-information-bearing image and which has been formed on the support.
Inventors
- 👤 Kunihiro Koshizuka
- 👤 Shigehiro Kitamura
- 👤 Atsushi Nakajima
- 👤 Tomonori Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:16
CPC Classifications
B; B42; B42D; B42D25/00; B42D25/30; B42D25/309; B42D25/351; B42D25/20; B42D25/23; B42D25/40; B42D25/45; B42D25/455; B42D25/46; B44; B44C; B44C1/00; B44C1/16; B44C1/165; B44C1/17; B44C1/1712; B44C1/1729
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
100 words
A method for the production of an ID card comprising (a) forming an image-receiving layer on a support, (b) forming a gradation image with a heat diffusible dye on said image-receiving layer, (c) forming a character information bearing image with said heat diffusible dye or a hot melt ink on said image-receiving layer where said gradation image is absent, (d) preprinting a transparent sheet with a preprinted image common to a plurality of the ID cards to be produced, (e) applying said transparent sheet to said image receiving layer, and (f) hot stamping an entire surface of said transparent sheet.
Claim 2
Independent Claim
100 words
A method for the production of an ID card comprising (a) forming an image-receiving layer on a support, (b) forming a gradation image with a heat diffusible dye on said image-receiving layer, (c) forming a character information bearing image with said heat diffusible dye or a hot melt ink on said image-receiving layer where said gradation image is absent, (d) preprinting a transparent sheet with a preprinted image common to a plurality of the ID cards to be produced, (e) applying said transparent sheet to said image receiving layer, and (f) hot stamping an entire surface of said transparent sheet.
Claim 3
Independent Claim
129 words
A method for the production of ID cards comprising a. forming an image-receiving layer on a base support, b. forming a gradation image on said image-receiving layer by means of a heat diffusible dye, c. forming a character information bearing image with said diffusible dye or a hot melt ink on said image-receiving layer where said gradation image is absent, d. providing a backing sheet comprising a transparent resin layer having a layer thickness of 0.5 to 20 μm on a sheet support, e. preprinting said transparent resin layer with a data image containing information common to a plurality of said ID cards, f. transferring said resin layer after said preprinting from said sheet support onto at least a portion of a surface of said image-receiving layer by heating.
Claim 4
Independent Claim
129 words
A method for the production of ID cards comprising a. forming an image-receiving layer on a base support, b. forming a gradation image on said image-receiving layer by means of a heat diffusible dye, c. forming a character information bearing image with said diffusible dye or a hot melt ink on said image-receiving layer where said gradation image is absent, d. providing a backing sheet comprising a transparent resin layer having a layer thickness of 0.5 to 20 μm on a sheet support, e. preprinting said transparent resin layer with a data image containing information common to a plurality of said ID cards, f. transferring said resin layer after said preprinting from said sheet support onto at least a portion of a surface of said image-receiving layer by heating.
Claim 5
Dependent Claim
17 words
The method of claim 2 wherein said backing sheet covers a complete surface of said ID card.
Claim 6
Dependent Claim
12 words
The method of claim 2 wherein said base support is of PET.
Claim 7
Dependent Claim
28 words
The method of claim 2 wherein said hot stamping is carried out at 120° to 250° C. and under a pressure of 5 to 100 kg/cm 2 .
Claim 8
Dependent Claim
15 words
The method of claim 5 wherein said backing sheet is 1 to 20 μm thick.
Claim 9
Dependent Claim
15 words
The method of claim 6, wherein said backing sheet is 2 to 10 μm thick.
Claim 10
Dependent Claim
13 words
The method of claim 2 wherein said thickness is 1.0 to 10 μm.
Claim 11
Dependent Claim
19 words
The method of claim 2 wherein a peeling layer is provided between said sheet support and said resin layer.
Claim 12
Dependent Claim
18 words
The method of claim 10 wherein said base support has a base thickness of 200 to 1000 μm.
Claim 13
Dependent Claim
14 words
The method of claim 10 wherein said base thickness is 300 to 800 μm.
Claim 14
Dependent Claim
14 words
The method of claim 10 wherein said base thickness is 300 to 800 μm.
Claim 15
Dependent Claim
11 words
The method of claim 2 wherein said sheet support is transparent.
Claim 16
Independent Claim
147 words
A method for the production of ID cards comprising a. forming an image-receiving layer on a PET based support, said support having a thickness of 300 to 800 μm, b. forming a gradation image on said image-receiving layer by means of a heat diffusible dye, c. forming a character information bearing image with said diffusible dye or a hot melt ink on said image-receiving layer where said gradation image is absent, d. providing a backing sheet comprising a transparent resin layer having a layer thickness of 0.5 to 20 μm on a sheet support, e. preprinting said transparent resin layer with a data image containing information common to a plurality of said ID cards, f. transferring said transparent resin layer, after said preprinting, from said sheet support onto at least a portion of a surface of said image-receiving layer by hot stamping at 120° to 250° C.
Claim 17
Independent Claim
147 words
A method for the production of ID cards comprising a. forming an image-receiving layer on a PET based support, said support having a thickness of 300 to 800 μm, b. forming a gradation image on said image-receiving layer by means of a heat diffusible dye, c. forming a character information bearing image with said diffusible dye or a hot melt ink on said image-receiving layer where said gradation image is absent, d. providing a backing sheet comprising a transparent resin layer having a layer thickness of 0.5 to 20 μm on a sheet support, e. preprinting said transparent resin layer with a data image containing information common to a plurality of said ID cards, f. transferring said transparent resin layer, after said preprinting, from said sheet support onto at least a portion of a surface of said image-receiving layer by hot stamping at 120° to 250° C.
Claim 18
Dependent Claim
15 words
The method of claim 14 wherein said support comprises PET sandwiched between layers of polypropylene.
Claim 19
Dependent Claim
11 words
The method of claim 14 wherein said sheet support is transparent.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |