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US4597637A Expired / Lapsed US ⏱️ 0.0 years remaining

Color optical printer head having a liquid crystal layer

Assignee: Fujifilm Holdings Corp
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Filing: 1984-01-26
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Granted: 1986-07-01
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Expires: 2004-01-26
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Abstract

Abstract A color optical printer head which can prevent white light from leaking between the interstices between transparent electrodes arranged inside liquid crystal shutter arrays and which can also prevent mixture of colors, thereby improving color reproducibility. The color optical printer head is characterized in that a transparent electrode on either side of the liquid crystal shutter arrays is formed on color filter layers of different colors formed on a glass substrate.

Inventors

  • 👤 Takahiro Ohta

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 22:26
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 119 words
A color optical printer head comprising: a liquid crystal, two glass substrates, said liquid crystal being sealed between said glass substrates, polarizing plates mounted on outer surfaces of said glass substrates, liquid crystal shutter arrays having plural transparent electrodes arranged in an opposing manner on said two glass substrates on the side contacting said liquid crystal, and color filter layers mounted at locations where transparent electrodes are formed to act as an optical shutter when a predetermined voltage is selectively applied between said opposing transparent electrodes, said color filter layers being of different colors corresponding to the colors to be resolved and being interposed between one of said glass substrates and the transparent electrodes on said one glass substrate.
Claim 2
Dependent Claim 119 words
A color optical printer head comprising: a liquid crystal, two glass substrates, said liquid crystal being sealed between said glass substrates, polarizing plates mounted on outer surfaces of said glass substrates, liquid crystal shutter arrays having plural transparent electrodes arranged in an opposing manner on said two glass substrates on the side contacting said liquid crystal, and color filter layers mounted at locations where transparent electrodes are formed to act as an optical shutter when a predetermined voltage is selectively applied between said opposing transparent electrodes, said color filter layers being of different colors corresponding to the colors to be resolved and being interposed between one of said glass substrates and the transparent electrodes on said one glass substrate.
Claim 3
Dependent Claim 48 words
A color optical printer head according to claim 1, wherein said color filter layer comprises colored resin layers or laminations thereof, and a transparent layer coating said layers or laminations so as to make the distance between opposing electrodes uniform over the whole surface of the shutter arrays.
Claim 4
Dependent Claim 19 words
A color optical printer head according to claim 2, wherein said transparent layer is a layer of photosensitive resin.
Claim 5
Dependent Claim 44 words
A color optical printer head according to claim 3, wherein said photosensitive resin layer is a photohardening resin and comprises a polymer including an unsaturated bond group which is expressed as --CH═CR--CO-- (wherein R denotes hydrogen atom, alkyl group, cyano group, or allyl group).
Claim 6
Dependent Claim 23 words
A color optical printer head according to claim 4, wherein said polymer is selected from the group consisting of polyester, polyamide, and polycarbonate.
Claim 7
Dependent Claim 21 words
A color optical printer head according to claim 2, wherein photosensitive resin is located between the layers forming said color filters.
Claim 8
Dependent Claim 29 words
A color optical printer according to claim 6, wherein said photosensitive resin between the layers forming said color filter layers is the same photosensitive resin as said coating layer.
Claim 9
Dependent Claim 20 words
A color optical printer head according to claim 2, wherein said laminated colored resin layers are layers preventing color mixture.
Claim 10
Dependent Claim 26 words
A color optical printer head according to claim 2, wherein said coating layer includes a transparent layer which prevents alkali ions from entering the liquid crystal.
Claim 11
Dependent Claim 166 words
A color optical printer head comprising: a liquid crystal, two glass substrates, said liquid crystal being sealed between said glass substrates, polarizing plates mounted on outer surfaces of said glass substrates, liquid crystal shutter arrays having plural transparent electrodes arranged in an opposing manner on said two glass substrates on the side contacting said liquid crystal, and color filter layers mounted at locations where transparent electrodes are formed to act as an optical shutter when a predetermined voltage is selectively applied between said opposing transparent electrodes, said color filter layers being of different colors corresponding to the colors to be resolved and being interposed between one of said glass substrates and the transparent electrodes on said one glass substrate, said color filter layer comprising colored resin layers or laminations thereof, and a transparent layer coating said layers or laminations, so as to make the distance between opposing electrodes uniform over the whole surface of the shutter arrays, said transparent layer being a layer of photosensitive resin.
Claim 12
Dependent Claim 166 words
A color optical printer head comprising: a liquid crystal, two glass substrates, said liquid crystal being sealed between said glass substrates, polarizing plates mounted on outer surfaces of said glass substrates, liquid crystal shutter arrays having plural transparent electrodes arranged in an opposing manner on said two glass substrates on the side contacting said liquid crystal, and color filter layers mounted at locations where transparent electrodes are formed to act as an optical shutter when a predetermined voltage is selectively applied between said opposing transparent electrodes, said color filter layers being of different colors corresponding to the colors to be resolved and being interposed between one of said glass substrates and the transparent electrodes on said one glass substrate, said color filter layer comprising colored resin layers or laminations thereof, and a transparent layer coating said layers or laminations, so as to make the distance between opposing electrodes uniform over the whole surface of the shutter arrays, said transparent layer being a layer of photosensitive resin.
Claim 13
Dependent Claim 43 words
A color optical printer according to claim 10, wherein said photosensitive resin layer is a photohardening resin and comprises a polymer including an unsaturated bond group which is expressed as --CH--CR--CO-- (wherein R denotes hydrogen atom, alkyl group, cyano group, or allyl group).
Claim 14
Dependent Claim 23 words
A color optical printer head according to claim 11, wherein said polymer is selected from the group consisting of polyester, polyamide, and polycarbonate.
Claim 15
Dependent Claim 179 words
A color optical printer head comprising: a liquid crystal, two glass substrates, said liquid crystal being sealed between said glass substrates, polarizing plates mounted on outer surfaces of said glass substrates, liquid crystal shutter arrays having plural transparent electrodes arranged in an opposing manner on said two glass substrates on the side contacting said liquid crystal, and color filter layers mounted at locations where transparent electrodes are formed to act as an optical shutter when a predetermined voltage is selectively applied between said opposing transparent electrodes, said color filter layers being of different colors corresponding to the colors to be resolved and being interposed between one of said glass substrates and the transparent electrodes on said one glass substrate, said color filter layer comprising colored resin layers or laminations thereof, and a transparent layer coating said layers or laminations, so as to make the distance between opposing electrodes uniform over the whole surface of the shutter arrays, photosensitive resin being located between the layers forming said color filter layers and being the same photosensitive resin as said transparent layer.
Claim 16
Dependent Claim 179 words
A color optical printer head comprising: a liquid crystal, two glass substrates, said liquid crystal being sealed between said glass substrates, polarizing plates mounted on outer surfaces of said glass substrates, liquid crystal shutter arrays having plural transparent electrodes arranged in an opposing manner on said two glass substrates on the side contacting said liquid crystal, and color filter layers mounted at locations where transparent electrodes are formed to act as an optical shutter when a predetermined voltage is selectively applied between said opposing transparent electrodes, said color filter layers being of different colors corresponding to the colors to be resolved and being interposed between one of said glass substrates and the transparent electrodes on said one glass substrate, said color filter layer comprising colored resin layers or laminations thereof, and a transparent layer coating said layers or laminations, so as to make the distance between opposing electrodes uniform over the whole surface of the shutter arrays, photosensitive resin being located between the layers forming said color filter layers and being the same photosensitive resin as said transparent layer.

References Cited (Backward Citations)

US4006968A Cited
US4410887A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-06-30 1989-12-30 1990-07-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-06-30 1993-12-30 1994-07-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-06-30 1997-12-30 1998-07-01 $7700.00 Window Closed / Lapsed

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