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US4760410A Expired / Lapsed US ⏱️ 0.0 years remaining

Image display device

Assignee: Canon Inc
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Filing: 1987-01-20
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Granted: 1988-07-26
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Expires: 2007-01-20
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Abstract

Abstract An image display device includes an image carrier, an image forming station for forming an erasable image on the image carrier, a display station for visually displaying the image formed on the image carrier, and a read station for reading out the image on the image carrier and converting the image to an image signal.

Inventors

  • 👤 Hirotoshi Kishi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 10:24
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/001; G09G3/002; G03; G03G; G03G15/00; G03G15/22; G03G15/221; G03G15/04; G03G15/043

Claims Analysis

Total Claims: 24
Claim 1
Independent Claim 124 words
An image display device comprising: an image bearing member fixed and formed in a shape of a plate; means for forming an erasable and visible image on said image bearing member in response to an electric signal, wherein said image forming means includes developing means having developer and wherein said visible image is an image developed by said developing means; a display station for visually displaying the image formed on said image bearing member; and reading means for reading the visible image on said image bearing member and producing an image signal, wherein said reading means moves along said image bearing member in order to read said visible image and wherein said reading means operates independently of the operation of said image forming means.
Claim 2
Dependent Claim 124 words
An image display device comprising: an image bearing member fixed and formed in a shape of a plate; means for forming an erasable and visible image on said image bearing member in response to an electric signal, wherein said image forming means includes developing means having developer and wherein said visible image is an image developed by said developing means; a display station for visually displaying the image formed on said image bearing member; and reading means for reading the visible image on said image bearing member and producing an image signal, wherein said reading means moves along said image bearing member in order to read said visible image and wherein said reading means operates independently of the operation of said image forming means.
Claim 3
Dependent Claim 22 words
An image display device according to claim 1 further comprising memory means for storing the image signal produced by said reading means.
Claim 4
Dependent Claim 38 words
An image display device according to claim 1 further comprising manually operable means for operating said image forming means and control means for controlling said image forming means in accordance with the input from said manually operable means.
Claim 5
Dependent Claim 44 words
An image display device according to claim 3 wherein said manually operable means includes key input means for starting the reading operation of said reading means, and said control means controls said reading means in accordance with the input from said key input means.
Claim 6
Dependent Claim 40 words
An image display device according to claim 1 further comprising manually operable means for starting the reading operation of said reading means, and control means for controlling said reading means in accordance with the input from said manually operable means.
Claim 7
Dependent Claim 36 words
An image display device according to claim 1 wherein said image bearing member is a plate and has a conductive layer on a first side and a photoconductive layer on a second side, and is fixed.
Claim 8
Dependent Claim 50 words
An image display device according to claim 1 wherein said image forming means includes irradiation means for irradiating a beam in response to said electric signal to said image bearing member and said developing means develops an image on said image bearing member to which said beam has been irradiated.
Claim 9
Dependent Claim 16 words
An image display device according to claim 1 wherein said image bearing member comprises a photoconductor.
Claim 10
Dependent Claim 18 words
An image display device according to claim 1 wherein said image forming means utilizes an electric photographic process.
Claim 11
Dependent Claim 25 words
An image display device according to claim 1 wherein the operation of said image forming means is interrupted while said reading means is being operated.
Claim 12
Dependent Claim 25 words
An image display device according to claim 1 wherein said developing means moves along said image bearing member in order to form said visible image.
Claim 13
Dependent Claim 143 words
An image display device comprising: an image bearing member fixed and formed in the shape of a plate; means for forming a visible image on said image bearing member, wherein said visible image is formed in response to an electric signal, wherein said image forming means includes developing means having developer, wherein said visible image is an image developed by said developing means, and wherein said developing means moves along said image bearing member in order to form said visible image; a display station for visually displaying the visible image formed on said image bearing member; and control means for controlling said image forming means to alter a desired portion of the visible image formed on said image bearing means, wherein said control means includes moving means for enabling said developing means to move to a desired position on said image bearing member.
Claim 14
Dependent Claim 143 words
An image display device comprising: an image bearing member fixed and formed in the shape of a plate; means for forming a visible image on said image bearing member, wherein said visible image is formed in response to an electric signal, wherein said image forming means includes developing means having developer, wherein said visible image is an image developed by said developing means, and wherein said developing means moves along said image bearing member in order to form said visible image; a display station for visually displaying the visible image formed on said image bearing member; and control means for controlling said image forming means to alter a desired portion of the visible image formed on said image bearing means, wherein said control means includes moving means for enabling said developing means to move to a desired position on said image bearing member.
Claim 15
Dependent Claim 28 words
An image display device according to claim 12 further comprising command means for commanding alteration of the desired portion of the image formed on said image bearing member.
Claim 16
Dependent Claim 28 words
An image display device according to claim 13 wherein said control means controls said image forming means while a command signal is being output from said command means.
Claim 17
Dependent Claim 27 words
An image display device according to claim 12 further comprising reading means for reading the visible image on said image bearing member and outputting an image signal.
Claim 18
Dependent Claim 40 words
An image display device according to claim 15 further comprising command means for commanding start of the reading operation of said reading means, wherein said control means controls said reading means in accordance with the input from said command means.
Claim 19
Dependent Claim 22 words
An image display device according to claim 15 further comprising memory means for storing the image signal produced by said reading means.
Claim 20
Dependent Claim 36 words
An image display device according to claim 12 wherein said image bearing member is a plate and has a conductive layer on a first side and a photoconductive layer on a second side, and is fixed.
Claim 21
Dependent Claim 44 words
An image display device according to claim 12 wherein said image forming means includes irradiation means for irradiating a beam to said image bearing member and said developing means develops the image on said image bearing member to which said beam has been irradiated.
Claim 22
Dependent Claim 25 words
An image display device according to claim 12 wherein said developing means moves along said image bearing member in order to form said visible image.
Claim 23
Dependent Claim 16 words
An image display device according to claim 12 wherein said image bearing member comprises a photoconductor.
Claim 24
Dependent Claim 18 words
An image display device according to claim 12 wherein said image forming means utilizes an electric photographic process.

References Cited (Backward Citations)

US3128683A Cited
US3660818A Cited
US3936178A Cited
US3986771A Cited
US4136943A Cited
US4286864A Cited
US4659210A Cited
US4322157A Cited
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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) 1991-07-26 1992-01-25 1992-07-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-07-26 1996-01-25 1996-07-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-07-26 2000-01-25 2000-07-26 $7700.00 Window Closed / Lapsed

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