Patent US4980221A successfully refreshed from Google Patents.
US4980221A
Expired / Lapsed
US
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Permeation printed plastic body
Assignee: Denka Co Ltd
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Filing: 1988-03-28
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Granted: 1990-12-25
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Expires: 2008-03-28
Abstract
Abstract A plastic article such as key tops of a key board needs wear resistant printing. This is attained in a styrene-based resin body suitable for such an article including key tops, by a process for permeation printing, comprising the steps of printing an article with an ink comprising a medium having a solubility parameter of 8.5 to 11.5 (cal/cc) 1/2 and then closing the printed surface of the article to permeate the ink into the article. Further, a system suitable for permeation printing a plastic article is provided which comprises a transfer-type printing device and a body heating and covering device, the body heating and covering device comprising a covering body which is heated and covers the printed surface of the plastic article to cause ink permeate into the plastic article.
Inventors
- 👤 Kazuhiro Kobayashi
- 👤 Hifumi Kouguthi
- 👤 Toshio Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:53
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/12; B41F; B41F16/00; B41F17/00; B41F17/006; B41F19/00; B41F19/02; B41F19/06; B41M1/26; B41M1/30; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
A permeation printed resin body comprising: a styrene-based resin body having a shaped surface, manufactured by forming an ink image on the shaped surface of the styrene-based resin body with an ink comprising oil-soluble dye and a solvent having a solubility parameter in a range of 9.5 to 10.5 (cal/cc) 1/2 , and causing the ink to permeate into the styrene-based resin body, said printed styrene-based resin body comprising an image-forming ink permeated from the shaped surface into the resin body, the depth of permeation of the dye being at least 20 μm.
Claim 2
Dependent Claim
93 words
A permeation printed resin body comprising: a styrene-based resin body having a shaped surface, manufactured by forming an ink image on the shaped surface of the styrene-based resin body with an ink comprising oil-soluble dye and a solvent having a solubility parameter in a range of 9.5 to 10.5 (cal/cc) 1/2 , and causing the ink to permeate into the styrene-based resin body, said printed styrene-based resin body comprising an image-forming ink permeated from the shaped surface into the resin body, the depth of permeation of the dye being at least 20 μm.
Claim 3
Dependent Claim
22 words
A printed resin body according to claim 1, wherein said depth of permeation of the ink is at least about 30 μm.
Claim 4
Dependent Claim
22 words
A printed resin body according to claim 1, wherein said depth of permeation of the ink is at least about 100 μm.
Claim 5
Dependent Claim
22 words
A printed resin body according to claim 1, wherein said depth of permeation of the ink is at least about 200 μm.
Claim 6
Dependent Claim
25 words
A printed resin body according to claim 1, wherein said depth of permeation of the ink is in a range of 30 μm 100 μm.
Claim 7
Dependent Claim
15 words
A printed resin body according to claim 1, wherein said dye is a sublimating substance.
Claim 8
Dependent Claim
17 words
A printed resin body according to claim 1, wherein the styrene-based resin is an acrylonitrile-butadiene-styrene copolymer resin.
Claim 9
Dependent Claim
17 words
A printed resin body according to claim 1, wherein the printed resin body is a key top.
Claim 10
Dependent Claim
43 words
A printed resin body according to claim 8, wherein said key top has a concave shaped surface from which the ink permeated into the resin body and a pattern of said image-forming dye has a width of a blur less than 0.03 mm.
Claim 11
Dependent Claim
22 words
A printed resin body according to claim 9, wherein the width of the blur of the pattern is less than 0.02 mm.
Claim 12
Dependent Claim
22 words
A printed resin body according to claim 10, wherein the width of the blur of the pattern is less than 0.015 mm.
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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) | 1993-12-24 | 1994-06-25 | 1994-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-24 | 1998-06-25 | 1998-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-24 | 2002-06-25 | 2002-12-25 | $7700.00 | Window Closed / Lapsed |