US4933926A — Image forming medium, method and apparatus

Claim 1

Independent Claim 58 words

A semiconductor recording medium comprising at least a laminate comprising, arranged in the order stated, a transparent conductive layer having translucent conducting properties, a photoconductive semiconductor layer whose resistance value changes in proportion to a quantity of light received thereon, a plurality of semiconductor layers mutually electrically separated from each other, an oxide film, and a nitrided film.

Claim 2

Dependent Claim 58 words

A semiconductor recording medium comprising at least a laminate comprising, arranged in the order stated, a transparent conductive layer having translucent conducting properties, a photoconductive semiconductor layer whose resistance value changes in proportion to a quantity of light received thereon, a plurality of semiconductor layers mutually electrically separated from each other, an oxide film, and a nitrided film.

Claim 3

Dependent Claim 40 words

The semiconductor recording medium as claimed in claim 1, wherein a transparent board is attached to one side of said transparent conductive layer, so that an input recording signal is incident on said transparent conductive layer via said transparent board.

Claim 4

Independent Claim 130 words

A method for recording signals on a semiconductor recording medium comprising, arranged in the order stated, at least a laminate comprising a transparent conductive layer having translucent conducting properties, a photoconductive semiconductor layer whose resistance value changes in proportion to a quantity of light received thereon, a plurality of semiconductor layers mutually electrically separated from each other, an oxide film, and a nitrided film, said method comprising the steps of: applying an optical signal modulated according to an input recording signal on said transparent conductive layer while applying a predetermined voltage between said transparent conductive layer and said nitrided film of said recording medium so as to cause a depletion layer and charges to be produced and held in said semiconductor layers and said nitrided film, respectively, for recording purposes.

Claim 5

Independent Claim 130 words

A method for recording signals on a semiconductor recording medium comprising, arranged in the order stated, at least a laminate comprising a transparent conductive layer having translucent conducting properties, a photoconductive semiconductor layer whose resistance value changes in proportion to a quantity of light received thereon, a plurality of semiconductor layers mutually electrically separated from each other, an oxide film, and a nitrided film, said method comprising the steps of: applying an optical signal modulated according to an input recording signal on said transparent conductive layer while applying a predetermined voltage between said transparent conductive layer and said nitrided film of said recording medium so as to cause a depletion layer and charges to be produced and held in said semiconductor layers and said nitrided film, respectively, for recording purposes.

Claim 6

Dependent Claim 40 words

The method of recording signals on a semiconductor recording medium as claimed in claim 3, further comprising the steps of rotating said semiconductor recording medium so that a surface of said transparent conductive layer is scanned using said optical signal.

Claim 7

Independent Claim 127 words

A method for recording signals on a semiconductor recording medium comprising, arranged in the order stated at least a laminate comprising a transparent conductive layer having translucent conducting properties, a photoconductive semiconductor layer whose resistance value changes in proportion to a quantity of light received thereon, a plurality of semiconductor layers mutually electrically separated from each other, an oxide film, and a nitrided film, said method comprising the steps of: directing an optical signal of a photographic object on said transparent conductive layer while applying a predetermined voltage between said transparent conductive layer and said nitrided film of said recording medium so as to cause a depletion layer and charges to be produced and held in said semiconductor layer and said nitrided film, respectively, for recording purposes.

Claim 8

Independent Claim 127 words

A method for recording signals on a semiconductor recording medium comprising, arranged in the order stated at least a laminate comprising a transparent conductive layer having translucent conducting properties, a photoconductive semiconductor layer whose resistance value changes in proportion to a quantity of light received thereon, a plurality of semiconductor layers mutually electrically separated from each other, an oxide film, and a nitrided film, said method comprising the steps of: directing an optical signal of a photographic object on said transparent conductive layer while applying a predetermined voltage between said transparent conductive layer and said nitrided film of said recording medium so as to cause a depletion layer and charges to be produced and held in said semiconductor layer and said nitrided film, respectively, for recording purposes.

Claim 9

Independent Claim 105 words

A method for reproducing recorded signals from a semiconductor recording medium comprising at least a laminate comprising, arranged in the order stated a transparent conductive layer having translucent conducting properties, a photoconductive semiconductor layer whose resistance value changes in proportion to a quantity of light received thereon, a plurality of semiconductor layers mutually electrically separated from each other, an oxide film, and a nitrided film, said method comprising the steps of: detecting an electrostatic capacity between said transparent conductive layer and said nitrided film while directing light with a fixed intensity of illumination onto said transparent conductive layer so as to reproduce the recorded signal.

Claim 10

Independent Claim 105 words

A method for reproducing recorded signals from a semiconductor recording medium comprising at least a laminate comprising, arranged in the order stated a transparent conductive layer having translucent conducting properties, a photoconductive semiconductor layer whose resistance value changes in proportion to a quantity of light received thereon, a plurality of semiconductor layers mutually electrically separated from each other, an oxide film, and a nitrided film, said method comprising the steps of: detecting an electrostatic capacity between said transparent conductive layer and said nitrided film while directing light with a fixed intensity of illumination onto said transparent conductive layer so as to reproduce the recorded signal.

Claim 11

Dependent Claim 48 words

The method for reproducing recorded signals from a semiconductor recording medium as claimed in claim 6, further comprising the step of rotating said semiconductor recording medium so that a surface of said transparent conductive layer is scanned while light with said fixed intensity of illumination is directed thereon.

Claim 12

Dependent Claim 57 words

A recording medium comprising: a semiconductor substrate, a laminate laid on one surface of said semiconductor substrate, said laminate comprising, arranged in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor layer and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate.

Claim 13

Dependent Claim 57 words

A recording medium comprising: a semiconductor substrate, a laminate laid on one surface of said semiconductor substrate, said laminate comprising, arranged in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor layer and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate.

Claim 14

Independent Claim 130 words

A method for recording signals on a semiconductor recording medium comprising a laminate laid on one surface of a semiconductor substrate, said laminate comprising, arranged in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor layer and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, said method comprising the steps of: directing an optical signal modulated according to an input recording signal on said transparent conductive layer while applying a predetermined voltage between said transparent conductive layer and said nitrided film of said recording medium so as to cause a depletion layer and charges to be produced and held in predetermined portions of said semiconductor substrate and said nitrided film, respectively, for recording purposes.

Claim 15

Independent Claim 130 words

A method for recording signals on a semiconductor recording medium comprising a laminate laid on one surface of a semiconductor substrate, said laminate comprising, arranged in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor layer and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, said method comprising the steps of: directing an optical signal modulated according to an input recording signal on said transparent conductive layer while applying a predetermined voltage between said transparent conductive layer and said nitrided film of said recording medium so as to cause a depletion layer and charges to be produced and held in predetermined portions of said semiconductor substrate and said nitrided film, respectively, for recording purposes.

Claim 16

Dependent Claim 38 words

The method for recording signals on a recording medium as claimed in claim 9, further comprising the step of rotating said recording medium so that the surface of said transparent conductive layer is scanned using said optical signal.

Claim 17

Independent Claim 119 words

A method for recording signals on a semiconductor recording medium comprising a laminate laid on one surface of a semiconductor substrate, said laminate comprising, arranged in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor layer and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, said method comprising the steps of: directing an image of a photographic object on said transparent conductive layer while applying a predetermined voltage between said transparent conductive layer and said conductive layer so as to cause a depletion layer and charges to be produced and held in said semiconductor substrate and said nitrided film, respectively, for recording purposes.

Claim 18

Independent Claim 119 words

A method for recording signals on a semiconductor recording medium comprising a laminate laid on one surface of a semiconductor substrate, said laminate comprising, arranged in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor layer and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, said method comprising the steps of: directing an image of a photographic object on said transparent conductive layer while applying a predetermined voltage between said transparent conductive layer and said conductive layer so as to cause a depletion layer and charges to be produced and held in said semiconductor substrate and said nitrided film, respectively, for recording purposes.

Claim 19

Independent Claim 118 words

A method for recording signals on a semiconductor recording medium comprising a laminate laid on a surface of a semiconductor substrate, said laminate comprising, arranged in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor layer and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, said method comprising applying an input recording signal between said transparent conductive layer and said conductive layer while applying light with a fixed intensity of illumination on said transparent conductive layer so as to cause a depletion layer and charges to be produced and held in said semiconductor substrate and said nitrided film, respectively, for recording purposes.

Claim 20

Independent Claim 118 words

A method for recording signals on a semiconductor recording medium comprising a laminate laid on a surface of a semiconductor substrate, said laminate comprising, arranged in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor layer and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, said method comprising applying an input recording signal between said transparent conductive layer and said conductive layer while applying light with a fixed intensity of illumination on said transparent conductive layer so as to cause a depletion layer and charges to be produced and held in said semiconductor substrate and said nitrided film, respectively, for recording purposes.

Claim 21

Dependent Claim 44 words

The method for recording signals on a recording medium as claimed in claim 12, further comprising the step of rotating said recording medium so that a surface of said transparent conductive layer is scanned in response to means for applying said input recording signal.

Claim 22

Independent Claim 100 words

A method for reproducing recorded signals from a recording medium comprising a laminate laid on one surface of a semiconductor substrate, said laminate comprising, arranged in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, said method comprising the steps of: detecting an electrostatic capacity between said transparent conductive layer and said conductive layer while directing light with a fixed intensity of illumination of said transparent conductive layer so as to reproduce the recorded signal.

Claim 23

Independent Claim 100 words

A method for reproducing recorded signals from a recording medium comprising a laminate laid on one surface of a semiconductor substrate, said laminate comprising, arranged in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, said method comprising the steps of: detecting an electrostatic capacity between said transparent conductive layer and said conductive layer while directing light with a fixed intensity of illumination of said transparent conductive layer so as to reproduce the recorded signal.

Claim 24

Dependent Claim 46 words

The method for reproducing recorded signals from a recording medium as claimed in claim 14, further comprising the steps of turning said recording medium so that a surface of said transparent conductive layer is scanned while light with said fixed intensity of illumination is directed thereon.

Claim 25

Dependent Claim 99 words

An electronic still camera system employing a semiconductor recording medium comprising at least a laminate comprising, arranged in the order stated, a monocrystalline semiconductor layer, an oxide film and a nitrided film, and a photoconductive semiconductor layer covering at least one of an undersurface of said monocrystalline semiconductor layer and a surface of said nitrided film, said camera system comprising: at least a recording mechanism comprising means for applying a predetermined voltage between said photoconductive semiconductor layer and said monocrystalline semiconductor layer, and an optical system for directing an image of a photographic object onto said photoconductive semiconductor layer.

Claim 26

Dependent Claim 99 words

An electronic still camera system employing a semiconductor recording medium comprising at least a laminate comprising, arranged in the order stated, a monocrystalline semiconductor layer, an oxide film and a nitrided film, and a photoconductive semiconductor layer covering at least one of an undersurface of said monocrystalline semiconductor layer and a surface of said nitrided film, said camera system comprising: at least a recording mechanism comprising means for applying a predetermined voltage between said photoconductive semiconductor layer and said monocrystalline semiconductor layer, and an optical system for directing an image of a photographic object onto said photoconductive semiconductor layer.

Claim 27

Dependent Claim 78 words

The electronic still camera system as claimed in claim 16, wherein, for reproducing recorded signals for said semiconductor recording medium, said camera system comprises: a playback mechanism comprising means for linearly scanning said photoconductive semiconductor layer while applying a point light beam thereto with a fixed intensity of illumination, detecting means for detecting changes of electrostatic capacity resulting for said scanning, and playback means for forming an image signal according to a signal detected by said detecting means.

Claim 28

Independent Claim 123 words

A method for forming images by recording latent images using a semiconductor recording medium comprising a laminate laid on one surface of a semiconductor substrate, said laminate comprising, arranged in the order stated, an oxide film, a nitrided film, a photoconductive semiconductor layer and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, said method comprising: directing an optical image of a photographic object from said transparent conductive layer while applying a predetermined voltage between said transparent conductive layer and said conductive layer so as to allow said nitrided film to accumulate charges produced in said semiconductor substrate in correspondence with said optical image, and simultaneously allowing said semiconductor substrate to store a depletion layer.

Claim 29

Independent Claim 123 words

A method for forming images by recording latent images using a semiconductor recording medium comprising a laminate laid on one surface of a semiconductor substrate, said laminate comprising, arranged in the order stated, an oxide film, a nitrided film, a photoconductive semiconductor layer and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, said method comprising: directing an optical image of a photographic object from said transparent conductive layer while applying a predetermined voltage between said transparent conductive layer and said conductive layer so as to allow said nitrided film to accumulate charges produced in said semiconductor substrate in correspondence with said optical image, and simultaneously allowing said semiconductor substrate to store a depletion layer.

Claim 30

Dependent Claim 43 words

The method for forming images as claimed in claim 18, further comprising erasing latent image by erasing said charges and said depletion layer by applying a voltage opposite in polarity to said predetermined voltage between said transparent conductive layer and said conductive layer.

Claim 31

Independent Claim 99 words

A method for forming images comprising: directing an optical image of a photographic object on a semiconductor substrate of a recording medium comprising a laminate laid on one surface of a semiconductor substrate, said laminate comprising, in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, energizing said nitrided film with predetermined charges, and allowing said nitrided film to accumulate charges in a pattern corresponding to said optical image for recording a latent image.

Claim 32

Independent Claim 99 words

A method for forming images comprising: directing an optical image of a photographic object on a semiconductor substrate of a recording medium comprising a laminate laid on one surface of a semiconductor substrate, said laminate comprising, in the order stated from said one surface, an oxide film, a nitrided film, a photoconductive semiconductor and a transparent conductive layer, and a conductive layer formed on the other surface of said semiconductor substrate, energizing said nitrided film with predetermined charges, and allowing said nitrided film to accumulate charges in a pattern corresponding to said optical image for recording a latent image.

Claim 33

Dependent Claim 46 words

The method for forming image as claimed in claim 20, further comprising the step of directing an optical image of said photographic object via a charged plate having a predetermined potential by causing said charged plate to contact said nitrided film having translucent and conducting properties.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-06-11	1993-12-11	1994-06-12	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-06-11	1997-12-11	1998-06-12	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-06-11	2001-12-11	2002-06-12	$7700.00	Window Closed / Lapsed

Image forming medium, method and apparatus

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