US4601546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color optical printer head having liquid crystal layer
Assignee: Fujifilm Holdings Corp
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Filing: 1984-01-26
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Granted: 1986-07-22
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Expires: 2004-01-26
Abstract
Abstract A color optical printer head which can prevent leakage of white light from the interstices between transparent electrodes arranged inside liquid crystal arrays and prevent color mixture, thereby improving color reproducibility. A light blocking layer is formed between transparent electrodes which are adjacently arranged and covered with color filters of different colors and the whole surface which is covered either with the color filter layer or the light blocking layer is further covered with a protecting layer of photo-hardening resin.
Inventors
- 👤 Takahiro Ohta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:58
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/435; B41J2/465; B41J2/525; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133345; G02F1/1335; G02F1/133509; G02F1/133512
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
99 words
A color optical printer head comprising: two glass substrates, plural liquid crystal shutter arrays between said two glass substrates, said arrays having transparent electrodes, the surface of transparent electrodes provided on one of said two glass substrates forming said liquid crystal arrays being covered with color filters on the side of the liquid crystal, said color filters being of different colors corresponding to each color to be resolved, and a light blocking layer between adjacent transparent electrodes covered with color filters of different colors on said one glass substrate for preventing at least white light from being transmitted therethrough.
Claim 2
Dependent Claim
99 words
A color optical printer head comprising: two glass substrates, plural liquid crystal shutter arrays between said two glass substrates, said arrays having transparent electrodes, the surface of transparent electrodes provided on one of said two glass substrates forming said liquid crystal arrays being covered with color filters on the side of the liquid crystal, said color filters being of different colors corresponding to each color to be resolved, and a light blocking layer between adjacent transparent electrodes covered with color filters of different colors on said one glass substrate for preventing at least white light from being transmitted therethrough.
Claim 3
Dependent Claim
33 words
A color optical printer head as claimed in claim 1, wherein the light blocking layer extends beyond the periphery of the electrodes and covers the interstices between the electrodes in an overlapping manner.
Claim 4
Dependent Claim
120 words
A color optical printer comprising: two glass substrates, plural liquid crystal shutter arrays between said two glass substrates, and arrays having transparent electrodes, the surface of transparent electrodes provided on one of said two glass substrates forming said liquid crystal arrays being covered with color filters on the side of the liquid crystal, said color filters being of different colors corresponding to each color to be resolved, and a light blocking layer between adjacent transparent electrodes covered with color filters of different colors on said one glass substrate for preventing at least white light from being transmitted therethrough, the whole surface covered with said color filters or said light blocking layer being covered with a protecting layer of photo-sensitive resin.
Claim 5
Dependent Claim
120 words
A color optical printer comprising: two glass substrates, plural liquid crystal shutter arrays between said two glass substrates, and arrays having transparent electrodes, the surface of transparent electrodes provided on one of said two glass substrates forming said liquid crystal arrays being covered with color filters on the side of the liquid crystal, said color filters being of different colors corresponding to each color to be resolved, and a light blocking layer between adjacent transparent electrodes covered with color filters of different colors on said one glass substrate for preventing at least white light from being transmitted therethrough, the whole surface covered with said color filters or said light blocking layer being covered with a protecting layer of photo-sensitive resin.
References Cited (Backward Citations)
US4470667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |