Patent US5534372A successfully refreshed from Google Patents.
US5534372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
IC card having image information
Assignee: Dai Nippon Printing Co Ltd
•
Filing: 1994-07-25
•
Granted: 1996-07-09
•
Expires: 2014-07-25
Abstract
Abstract An IC card in which an IC chip is incorporated between a first and second base boards, comprises an image receiving layer on which an ink image is transferred by a thermal transfer method and a cushion layer provided between the IC chip and the image receiving layer so that the cushion layer smooths irregularity caused by the IC chip and improves a flatness of the image receiving layer.
Inventors
- 👤 Kunihiro Koshizuka
- 👤 Shigehiro Kitamura
- 👤 Masataka Takimoto
- 👤 Tomonori Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:11
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; G; G06; G06K; G06K19/00; G06K19/06; G06K19/08; G06K19/083; B41M5/426; B41M5/44
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
151 words
A card in which an IC (integrated circuit) chip is incorporated, said card comprising: a first base board and second base board constructed to form said card, said first base board having a Vicat Softening Point (°C.); an IC chip incorporated between said first base board and said second base board; an image receiving layer onto which an ink image is transferred from an ink supply sheet by a thermal transfer method, said image receiving layer being disposed on an outside of said first base board; and a cushion layer provided between said IC chip and said image receiving layer whereby said cushion layer smooths irregularities caused by said IC chip and improves a flatness of said image receiving layer, a softening point of said cushion layer being at least 10° C. lower than that of said first base board, whereby said cushion layer is softer than said first base board.
Claim 2
Dependent Claim
151 words
A card in which an IC (integrated circuit) chip is incorporated, said card comprising: a first base board and second base board constructed to form said card, said first base board having a Vicat Softening Point (°C.); an IC chip incorporated between said first base board and said second base board; an image receiving layer onto which an ink image is transferred from an ink supply sheet by a thermal transfer method, said image receiving layer being disposed on an outside of said first base board; and a cushion layer provided between said IC chip and said image receiving layer whereby said cushion layer smooths irregularities caused by said IC chip and improves a flatness of said image receiving layer, a softening point of said cushion layer being at least 10° C. lower than that of said first base board, whereby said cushion layer is softer than said first base board.
Claim 3
Dependent Claim
21 words
The card of claim 1, wherein the cushion layer is disposed between the first base board and the image receiving layer.
Claim 4
Dependent Claim
20 words
The card of claim 1, wherein the cushion layer is disposed between the IC chip and the first base board.
Claim 5
Dependent Claim
11 words
The card of claim 1, wherein the cushion layer is polyolefine.
Claim 6
Dependent Claim
17 words
The card of claim 1, wherein the cushion layer has a thickness of 2 to 200 μm.
Claim 7
Dependent Claim
17 words
The card of claim 1, wherein the cushion layer has a thickness of 5 to 50 μm.
Claim 8
Dependent Claim
16 words
The card of claim 1, wherein the base board is made of biaxial orientation polyester film.
Claim 9
Dependent Claim
30 words
The card of claim 1, wherein the IC chip is located on one section of the card and the ink image is transferred on the other section of the card.
Claim 10
Dependent Claim
13 words
The card of claim 1, wherein the ink image is a halftone image.
Claim 11
Dependent Claim
24 words
The card of claim 1, wherein a writing layer on which information is written is provided on an outside of the second base board.
Claim 12
Dependent Claim
28 words
The card of claim 1, wherein a hard overlay layer to smooth irregularity caused by the IC chip is provided between the base board and the IC chip.
Claim 13
Dependent Claim
39 words
The card of claim 1, wherein, after the ink image is transferred on the image receiving layer, an intermediate protective layer is provided on the ink layer and an ultraviolet ray hardening layer is provided on the protective layer.
Claim 14
Dependent Claim
17 words
The card of claim 1, wherein the base boards and the cushion layer contain a white pigment.
Claim 15
Dependent Claim
165 words
A card in which an IC (integrated circuit) chip is incorporated, said card comprising: a first base board and a second base board constructed to form said card, said first base board and said second base board having a tensile elastic modulus (ASTM D790) of 210 kgf mm -2 to 1020 kgm mm -2 ; an IC chip incorporated between said first base board and said second base board; an image receiving layer onto which an ink image is transferred from an ink supply sheet by a thermal transfer method, said image receiving layer being disposed on an outside of said first base board; and a cushion layer provided between said IC chip and said image receiving layer, said cushion layer having a tensile elastic modulus of 20 kgf mm -2 to 200 kgf mm -2 , whereby said cushion layer is softer than said first base board, thereby smoothing irregularities caused by said IC chip and improving a flatness of said image receiving layer.
Claim 16
Dependent Claim
165 words
A card in which an IC (integrated circuit) chip is incorporated, said card comprising: a first base board and a second base board constructed to form said card, said first base board and said second base board having a tensile elastic modulus (ASTM D790) of 210 kgf mm -2 to 1020 kgm mm -2 ; an IC chip incorporated between said first base board and said second base board; an image receiving layer onto which an ink image is transferred from an ink supply sheet by a thermal transfer method, said image receiving layer being disposed on an outside of said first base board; and a cushion layer provided between said IC chip and said image receiving layer, said cushion layer having a tensile elastic modulus of 20 kgf mm -2 to 200 kgf mm -2 , whereby said cushion layer is softer than said first base board, thereby smoothing irregularities caused by said IC chip and improving a flatness of said image receiving layer.
References Cited (Backward Citations)
US4894110A
Cited
EP0431493A2
Cited
US5173840A
Cited
JPH05155191A
Cited
JPH04336286A
Cited
WO1992021105A1
Cited
JPH0516540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-07-09 | 2000-01-08 | 2000-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-09 | 2004-01-08 | 2004-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-09 | 2008-01-08 | 2008-07-09 | $7700.00 | Window Closed / Lapsed |