US4634628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording medium and image recording process
Assignee: Canon Inc
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Filing: 1984-12-12
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Granted: 1987-01-06
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Expires: 2004-12-12
Abstract
Abstract A recording medium and an image recording process in which a change in enzyme activity by light irradiation is utilized.
Inventors
- 👤 Hirohide Munakata
- 👤 Yoshinori Tomida
- 👤 Masahiro Haruta
- 👤 Yutaka Hirai
- 👤 Yukuo Nishimura
- 👤 Takashi Hamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:38
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/731; Y; Y10; Y10S; Y10S430/00; Y10S430/163
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
136 words
An image recording process comprising: (a) light-irradiating a recording medium according to a prerecorded pattern which recording medium comprises (1) a photosensitive layer comprising (i) an enzyme the activity of which can be increased or decreased by light irradiation and (ii) a carrier on which the enzyme is fixed and (2) a recording layer comprising a mixture of a recording material and a substance which is decomposable by the action of the enzyme only in the presence of a developing liquid and is removable by the developing liquid, to form a latent image in the photosensitive layer due to the difference in enzymatic activity in the irradiated and non-irradiated regions of the photosensitive layer; and (b) applying the developing liquid to the recording medium to decompose and remove the recording layer and develop a relief image.
Claim 2
Dependent Claim
136 words
An image recording process comprising: (a) light-irradiating a recording medium according to a prerecorded pattern which recording medium comprises (1) a photosensitive layer comprising (i) an enzyme the activity of which can be increased or decreased by light irradiation and (ii) a carrier on which the enzyme is fixed and (2) a recording layer comprising a mixture of a recording material and a substance which is decomposable by the action of the enzyme only in the presence of a developing liquid and is removable by the developing liquid, to form a latent image in the photosensitive layer due to the difference in enzymatic activity in the irradiated and non-irradiated regions of the photosensitive layer; and (b) applying the developing liquid to the recording medium to decompose and remove the recording layer and develop a relief image.
Claim 3
Dependent Claim
22 words
The image recording process of claim 1, wherein the light for irradiating the recording medium is ultraviolet light of wavelengths 2000-3700 Å.
Claim 4
Dependent Claim
21 words
The image recording process of claim 1, wherein the enzyme is proteinase, tyrosinase, amylase, endopeptidase, urease, glucose oxidase, or macerating enzyme.
Claim 5
Dependent Claim
22 words
The image recording process of claim 1, wherein the recording material is copper phthalocyanine, thioindigo, indigo, diaminodiphenylmethane, benzanthrone, or melanine coloring matter.
Claim 6
Dependent Claim
17 words
The image recording process of claim 1, wherein the carrier is collagen, polyacrylamide, cellulose, or porous glass.
Claim 7
Dependent Claim
28 words
The image recording process of claim 1, wherein the substance decomposable by the enzyme is starch, protein, urea, glucose, tyrosin, milk casein, indoxyl acetate, isatin acetate, or polyglutamate.
Claim 8
Dependent Claim
13 words
The image recording process of claim 1, wherein the developing liquid is water.
Claim 9
Dependent Claim
23 words
The image recording process of claim 1, wherein the thickness of the enzyme layer is in the range of 40 to 100,000 Å.
Claim 10
Dependent Claim
23 words
The image recording process of claim 1, wherein the thickness of the recording layer is in the range of 40 to 100,000 Å.
References Cited (Backward Citations)
US3694207A
Cited
US4356256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |