US5173313A
Expired / Lapsed
US
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Roll-stamper for forming substrate of information-recording medium
Assignee: Canon Inc
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Filing: 1991-02-21
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Granted: 1992-12-22
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Expires: 2011-02-21
Abstract
Abstract A roll-stamper for forming substrates of an information-recording medium includes at least one stamper being fastened along a peripheral face of a mirror roller, carrying on a surface thereof patterns each corresponding to a preformat for an information recording medium, also having stoppers fixed along both edges on the reverse side thereof, and being fastened to the mirror roller by inserting the stoppers respectively into negative stopping-grooves cut into the mirror roller in parallel with the axis of the mirror roller.
Inventors
- 👤 Tetsuya Sato
- 👤 Osamu Kanome
- 👤 Hitoshi Yoshino
- 👤 Hisanori Hayashi
- 👤 Hirofumi Kamitakahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:40
CPC Classifications
B; B29; B29D; B29D17/00; B29D17/005; B29D17/007; B29C; B29C33/00; B29C33/30; B29C33/305; B29C59/00; B29C59/02; B29C59/04; B29L; B29L2017/00; B29L2017/001; B29L2017/003; B29L2017/005; Y; Y10; Y10S; Y10S425/00; Y10S425/81
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
106 words
A roll-stamper for forming substrates of an information-recording medium, which comprises at least one stamper being fastened along a peripheral face of a mirror roller, said stamper having on a front side patterns each corresponding to a preformat for an information recording medium, and having stoppers fixed along both edges on a reverse side thereof, and being fastened to the mirror roller by inserting said stoppers into negative stopping-grooves cut into the mirror roller in parallel with an axial direction of the mirror roller, wherein said stoppers and the stopping-grooves have a cross-sectional profile preventing said stamper from peeling off the surface of the mirror roller.
Claim 2
Dependent Claim
106 words
A roll-stamper for forming substrates of an information-recording medium, which comprises at least one stamper being fastened along a peripheral face of a mirror roller, said stamper having on a front side patterns each corresponding to a preformat for an information recording medium, and having stoppers fixed along both edges on a reverse side thereof, and being fastened to the mirror roller by inserting said stoppers into negative stopping-grooves cut into the mirror roller in parallel with an axial direction of the mirror roller, wherein said stoppers and the stopping-grooves have a cross-sectional profile preventing said stamper from peeling off the surface of the mirror roller.
Claim 3
Dependent Claim
15 words
The roll-stamper of claim 1, wherein each stopper and stopping groove has a trapezoidal cross-section.
Claim 4
Dependent Claim
118 words
A roll-stamper for forming substrates of an information-recording medium, which comprises at least one stamper being fastened along a peripheral surface of a mirror roller, said stamper having on a front side patterns each corresponding to a preformat for an information recording medium, and having stoppers fixed along both edges on a reverse side thereof, and being fastened to the mirror roller by inserting said stoppers into negative stopping-grooves cut into the mirror roller along the axis of the mirror roller, wherein a pair of the negative stopping-grooves for receiving said stoppers of said stamper are cut into the mirror roller such that the space between the stopping-grooves is tapered along the axial direction of the mirror roller.
Claim 5
Dependent Claim
118 words
A roll-stamper for forming substrates of an information-recording medium, which comprises at least one stamper being fastened along a peripheral surface of a mirror roller, said stamper having on a front side patterns each corresponding to a preformat for an information recording medium, and having stoppers fixed along both edges on a reverse side thereof, and being fastened to the mirror roller by inserting said stoppers into negative stopping-grooves cut into the mirror roller along the axis of the mirror roller, wherein a pair of the negative stopping-grooves for receiving said stoppers of said stamper are cut into the mirror roller such that the space between the stopping-grooves is tapered along the axial direction of the mirror roller.
Claim 6
Independent Claim
120 words
An apparatus for continuously producing substrates of an information-recording medium, comprising: extruding means for forming a resin sheet by extruding a resin; a roll-stamper carrying preformat patterns on a front side for transferring the preformat patterns onto the resin sheet; and at least one pressure mirror roller opposing said roll-stamper, wherein said roll-stamper comprises at least one thin stamper having stoppers fixed along both edges on a reverse side thereof, and being fastened onto a mirror roller by inserting said stoppers into negative stopping-grooves cut into said mirror roller along the axial direction of said mirror roller, wherein said stoppers and said stopping-grooves have a cross-sectional profile for preventing said stamper from peeling off said surface of said mirror roller.
Claim 7
Independent Claim
120 words
An apparatus for continuously producing substrates of an information-recording medium, comprising: extruding means for forming a resin sheet by extruding a resin; a roll-stamper carrying preformat patterns on a front side for transferring the preformat patterns onto the resin sheet; and at least one pressure mirror roller opposing said roll-stamper, wherein said roll-stamper comprises at least one thin stamper having stoppers fixed along both edges on a reverse side thereof, and being fastened onto a mirror roller by inserting said stoppers into negative stopping-grooves cut into said mirror roller along the axial direction of said mirror roller, wherein said stoppers and said stopping-grooves have a cross-sectional profile for preventing said stamper from peeling off said surface of said mirror roller.
Claim 8
Dependent Claim
25 words
The roll-stamper of claim 1, wherein the cross-section of each stopper and stopping-groove is one of either an inverted T shape, L shape and I-shape.
Claim 9
Dependent Claim
11 words
The roll-stamper of claim 1, wherein said stopper is stainless steel.
Claim 10
Dependent Claim
16 words
The roll-stamper of claim 1, wherein said stopper is fixed to said stamper with silver soldering.
Claim 11
Dependent Claim
22 words
The roll-stamper of claim 1, wherein the patterns on said surface of said stamper correspond to tracking grooves of an optical card.
Claim 12
Dependent Claim
37 words
The roll-stamper of claim 1, wherein the patterns on said surface of said stamper correspond to striped tracking grooves of an optical card of 0.5-2 μm in width, 1.0-5 μm in pitch, and 200-5000 Å in depth.
Claim 13
Dependent Claim
37 words
The roll-stamper of claim 1, wherein the patterns on said surface of said stamper correspond to striped tracking grooves of an optical card of 2-5 μm in width, 8-15 μm in pitch, and 200-5000 Å in depth.
Claim 14
Dependent Claim
40 words
The roll-stamper of claim 1, wherein the patterns on said surface of said stamper correspond to spiral or concentric circular tracking grooves of an optical card of 0.2-5 μm in width, 1-5 μm in pitch, and 200-5000 Å in depth.
Claim 15
Dependent Claim
13 words
The roll-stamper of claim 1, wherein the stopping groove is 5-10 mm deep.
Claim 16
Dependent Claim
29 words
The roll-stamper of claim 3, wherein said stopper and the stopping grooves provide a cross-section which prevents said stamper from peeling off of the surface of the mirror roller.
Claim 17
Dependent Claim
15 words
The roll-stamper of claim 13, wherein said stopper and the stopping-grooves define a trapezoidal cross-section.
Claim 18
Dependent Claim
23 words
The roll-stamper of claim 13, wherein the cross-section of each stopper and stopping-groove is either one of an inverted T-shape, L-shape and I-shape.
Claim 19
Dependent Claim
11 words
The roll-stamper of claim 3, wherein said stopper is stainless steel.
Claim 20
Dependent Claim
16 words
The roll-stamper of claim 3, wherein said stopper is fixed to said stamper with silver soldering.
Claim 21
Dependent Claim
22 words
The claim-stamper of claim 3, wherein the patterns on said surface of said stamper correspond to tracking grooves of an optical card.
Claim 22
Dependent Claim
37 words
The roll-stamper of claim 3, wherein the patterns on said surface of said stamper correspond to striped tracking grooves of an optical card of 0.5-2 μm in width, 1.0-5 μm in pitch, and 200-5000 Å in depth.
Claim 23
Dependent Claim
37 words
The roll-stamper of claim 3, wherein the patterns on said surface of said stamper correspond to striped tracking grooves of an optical card of 2-5 μm in width, 8-15 μm in pitch, and 200-5000 Å in depth.
Claim 24
Dependent Claim
40 words
The roll-stamper of claim 3, wherein the patterns on said surface of said stamper correspond to spiral or concentric circular tracking grooves of an optical card of 0.2-5 μm in width, 1-5 μm in pitch, and 200-5000 Å in depth.
Claim 25
Dependent Claim
13 words
The roll-stamper of claim 3, wherein the stopping groove is 5-10 mm deep.
Claim 26
Dependent Claim
22 words
The apparatus of claim 4, wherein the patterns on said surface of said stamper correspond to tracking grooves of an optical card.
Claim 27
Dependent Claim
37 words
The apparatus of claim 4, wherein the patterns on said surface of said stamper correspond to striped tracking grooves of an optical card of 0.5-2 μm in width, 1.0-5 μm in pitch, and 200-5000 Å in depth.
Claim 28
Dependent Claim
37 words
The apparatus of claim 4, wherein the patterns on said surface of said stamper correspond to striped tracking grooves of an optical card of 2-5 μm in width, 8-15 μm in pitch, and 200-5000 Å in depth.
Claim 29
Dependent Claim
40 words
The apparatus of claim 4, wherein the patterns on said surface of said stamper correspond to spiral or concentric circular tracking grooves of an optical card of 0.2-5 μm in width, 1-5 μm in pitch, and 200-5000 Å in depth.
Claim 30
Independent Claim
109 words
An apparatus for continuously producing substrates of an information-recording medium, comprising: means for forming a resin sheet by extruding a resin; a roll-stamper carrying preformat patterns on a front side for transferring the preformat patterns onto the resin sheet; at least one pressure mirror roller opposing said roll-stamper, wherein said roll-stamper comprises at least one thin stamper having stoppers fixed along both edges on a reverse side thereof and being fastened onto a mirror roller by inserting said stoppers into negative stopping-grooves cut into said mirror roller in an axial direction thereof, wherein a space defined between said stopping-grooves is tapered along an axial direction of said mirror roller.
Claim 31
Independent Claim
109 words
An apparatus for continuously producing substrates of an information-recording medium, comprising: means for forming a resin sheet by extruding a resin; a roll-stamper carrying preformat patterns on a front side for transferring the preformat patterns onto the resin sheet; at least one pressure mirror roller opposing said roll-stamper, wherein said roll-stamper comprises at least one thin stamper having stoppers fixed along both edges on a reverse side thereof and being fastened onto a mirror roller by inserting said stoppers into negative stopping-grooves cut into said mirror roller in an axial direction thereof, wherein a space defined between said stopping-grooves is tapered along an axial direction of said mirror roller.
Claim 32
Dependent Claim
22 words
The apparatus of claim 27, wherein the patterns on said surface of said stamper correspond to tracking grooves of an optical card.
Claim 33
Dependent Claim
37 words
The apparatus of claim 27, wherein the patterns on said surface of said stamper correspond to striped tracking grooves of an optical card of 0.5-2 μm in width, 1.0-5 μm in pitch, and 200-5000 Å in depth.
Claim 34
Dependent Claim
37 words
The apparatus of claim 27, wherein the patterns on said surface of said stamper correspond to striped tracking grooves of an optical card of 2-5 μm in width, 8-15 μm in pitch, and 200-5000 Å in depth.
Claim 35
Dependent Claim
40 words
The apparatus of claim 27, wherein the patterns on said surface of said stamper correspond to spiral or concentric circular tracking grooves of an optical card of 0.2-5 μm in width, 1-5 μm in pitch, and 200-5000 Å in depth.
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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) | 1995-12-22 | 1996-06-22 | 1996-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-22 | 2000-06-22 | 2000-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-22 | 2004-06-22 | 2004-12-22 | $7700.00 | Window Closed / Lapsed |