# US 6,493,013 B2 · Method for recording and reproducing information, apparatus therefor and recording medium

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- Number: US 6,493,013 B2
- Document ID: US6493013B2
- Status: Granted
- Kind: B2
- Application number: 08/812,559
- Filed: 1997-03-07
- Published: 2002-01-17
- Granted: 2002-12-10
- Earliest claimed: 1988-05-17
- Assignees: Dainippon Printing Co., Ltd.
- Inventors: Hiroyuki Obata; Takashi Aono; Hiroshi Mohri; Masato Koike; Hideaki Amano; Norikazu Saito; Makoto Matsuo; Minoru Utsumi; Chihaya Ogusu; Shunsuke Mukasa; Yoshiaki Kudo
- Web page: https://patentgrep.com/patent/US6493013B2

## CPC

- G06K 19/06046: {Constructional details}
- G03G 5/02: Charge-receiving layers (G03G5/153 takes precedence)
- G03G 15/04045: {for exposing image information provided otherwise than by directly projecting the original image onto the photoconductive recording material, e.g. digital copiers (G03G15/041, G03G15/043 take precedence)}
- G03G 15/05: for imagewise charging, e.g. photoconductive control screen or optically activated charging means
- G03G 15/18: of a charge pattern
- G03G 15/221: {Machines other than electrographic copiers, e.g. electrophotographic cameras, electrostatic typewriters}
- G03G 15/344: {by selectively transferring the powder to the recording medium, e.g. by using a LED array}
- G03G 15/754: {relating to band, e.g. tensioning (G03G15/757 takes precedence)}
- G03G 15/758: {relating to plate or sheet}
- G03G 21/06: Eliminating residual charges from a reusable imaging member
- G06K 15/12: by photographic printing {, e.g. by laser printers}
- G06K 19/08: using markings of different kinds {or more than one marking of the same kind} in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
- G06K 19/10: at least one kind of marking being used for authentication, e.g. of credit or identity cards (verification of coded identity or credit cards in mechanisms actuated by them G07F7/12)
- G09F 3/0292: {tamper indicating labels}
- G11B 7/00: Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation {by modifying optical properties or the physical structure}, reproducing using an optical beam at lower power {by sensing optical properties}; Record carriers therefor (G11B11/00, G11B13/00 take precedence)
- G11B 7/0045: Recording (G11B7/006, G11B7/0065 take precedence)
- G11B 7/128: Modulators (G11B7/1245 takes precedence)
- G11B 7/24: Record carriers characterised by shape, structure or physical properties, or by the selection of the material (characterised by the arrangement of information on the carrier G11B7/007)
- G11B 9/00: Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor (G11B11/00 takes precedence {driving or moving of heads G11B21/02})
- G11B 9/08: using electrostatic charge injection; Record carriers therefor
- G11B 11/00: Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor {(driving or moving of heads G11B3/02, G11B5/48, G11B7/08, G11B21/02)}
- G11B 11/08: using recording by electric charge or by variation of electric resistance or capacitance {(G11B11/002, G11B11/10 take precedence)}
- G11B 25/04: using flat record carriers, e.g. disc, card
- H04N 1/028: for picture information pick-up
- H04N 1/48: Picture signal generators (for halftone screening H04N1/52)
- G03G 2217/0016: where the toner is conveyed over the electrode array to get a charging and then being moved
- G11B 7/004: Recording, reproducing or erasing methods; Read, write or erase circuits therefor {(magneto-optical systems G11B11/105)}
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

In the information recording an reproducing method and apparatus according to the present invention, a piece of picture image information is recorded as an analog quantity or a digital quantity an information carrying medium in a planar manner at a high density, charge potential is read for outputting electric signals to correspond to the recorded picture image information and then the outputted signals are printed out by means of various display unit or output device, with high quality and high resolution as well as ease processing of the information. The information carrying medium provides a long period of storage of information and enables stored picture image information to be repeatedly reproduced with a picture quality according to need. Particularly, it is, according to the present invention, possible to read and output local potential of an information carrying medium with predetermined scanning density at a desired time, and so pictures of high quality may be output as a silver salt photograph is taken and reproduced by optically scanning the film. Thus, the present invention may be applied to a wide field including photographing, copying and printing.

## Claims

### Claim 1

A card recording medium wherein the information carrying medium is included in a card, and wherein readable data are stored as an electrostatic latent image.

### Claim 2 (depends on 1)

A card recording medium as recited in claim 1, wherein a region of electric charges stored includes a high electric charge density region, charges in the high electric charge density region is usable as an energy source.

### Claim 3 (depends on 1, 2)

A card recording medium as recited in claims 1 or 2, wherein a specified pattern of electrostatic latent image is recorded in part thereof.

### Claim 4 (depends on 1, 2)

A card recording medium as recited in claim 1 or 2, further comprising an electrostatic label attached thereto, the label recording a hologram image or a specified electrostatic latent image in part thereof.

### Claim 5 (depends on 1, 2)

A card recording medium as recited in claim 1 or 2, comprising an electrostatic label recording a hologram image or a specified electrostatic latent image pattern in part thereof.

### Claim 6 (depends on 1, 2)

A card recording medium as recited in claim 1 or 2, further comprising an integrated circuit incorporated therein for providing a function of an integrated circuit card or a smart card.

### Claim 7 (depends on 1, 2)

A card recording medium as recited in claim 1 or 2, further comprising a magnetic recording region formed in part thereof for providing a function of a magnetic card.

### Claim 8 (depends on 1, 2)

A card recording medium as recited in claim 1 or 2, wherein the card like information carrying medium has a hollow portion, and further comprising a floppy disc memory rotatably set in the hollow portion.

### Claim 9 (depends on 1, 2)

A card recording medium as recited in claim 1 or 2, wherein the information carrying medium comprises in part thereof an optical information recording region for providing a function of an optical card including a high reflectance portion and a low reflectance portion.

### Claim 10 (depends on 1, 2)

A card recording medium as recited in claim 1 or 2, wherein the information carrying medium comprises an optical information recording region including a read only memory, a read and write memory or a read, write and erasable memory.

### Claim 11 (depends on 1, 2)

A card recording medium as recited in claims 1 or 2, wherein a hologram image is recorded as the electrostatic latent image in part thereof.

### Claim 12

An information recording and reproducing apparatus comprising irradiating means for applying rays of information light and a photosensitive member including a photoconductive layer, wherein an electrostatic recording card is arranged to face the photosensitive member for storing readable data as an electrostatic latent image in the electrostatic record card.