JPH0329964A - Method for recording charge image - Google Patents

Abstract

PURPOSE:To easily record a charge image with high image resolution on a charge image recording medium by transferring the charge image with high image resolution formed on a photoconductive layer member where electric field is impressed to the charge image recording medium. CONSTITUTION:By giving electromagnetic radiation including information which is the object of recording to the photoconductive layer member PCLM where the electric field is impressed, the charge image corresponding to the information which is the object of recording is formed on the photoconductive layer member PCLM. The charge image formed on the member PCLM is transferred to the charge image recording medium RM constituted by including at least a charge holding layer member CHL. Thus, the charge image with high image resolution is easily recorded on the charge image recording medium.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a method for recording a charge image.

(Prior Art) As the demand for recording various information signals at high recording densities has increased, in recent years it has become possible to record information signals using recording media made based on various structural and operating principles. It is well known that high-density recording and reproducing has become possible. Various formats have been proposed, such as thermal transformation type (which causes changes in absorption rate, etc.), as well as recording media in which recording and reproducing operations are performed using energy other than light. Many proposals have been made, and various proposals have also been made regarding recording and reproducing devices using these recording media.

However, in the above-mentioned conventional recording/reproducing apparatuses using various types of recording media, the structure of the apparatus for performing high-density recording is complicated and large-scale, and the erasable recording medium is not suitable for erasable recording media. As mentioned above, it has been proposed in the past, but while it is easy to erase when it is a magnetic recording medium, there is a problem in high density recording, and when it is an optical disk, for example, it is easy to erase. Although high-density recording is easy, IvI
II! There was a problem in that it could not be erased using an X method.

In order to solve the above-mentioned problems, the present applicant company=1-2, as illustrated in FIG. Using a writing head WH consisting of a transparent electrode Et and a photoconductive layer member 1) C
A charge retention layer member C made using a material (for example, silicone resin) that has an extremely high insulation resistance value that can retain at least an electric charge with the electrode E for a long time.
The information to be recorded is recorded on the charge image recording medium RM having the H L, and the information recorded in the form of a charge image on the charge image recording medium RM as described above is recorded, for example. Recording of a charge image, which is optically read out using a reading head RH configured by laminating a transparent electrode Etr and a light modulating material layer member PML, as illustrated in FIG.
We are proposing a playback device.

In FIG. 4, a power supply Vb is connected between the transparent electrode Et of the write head WH and the electrode E of the charge image recording medium RM, and the transparent electrode Et of the charge image recording medium RM and the transparent electrode 111 of the write head are connected. ] An electric field is formed between the electrode Et and the optical image of the object O is captured by the imaging lens I,
When an image is formed on the photoconductive layer member PCL of the write head WH by , the electrical resistance value in the photoconductive layer member PCL decreases in accordance with the light intensity of the optical image, and the charge image and the record medium RM are formed.
The charge retention layer member C T{I. , and a charge image corresponding to the information signal is formed on the surface of the charge retention layer member CHL of the charge image recording medium RM.

As described above, the charge retention layer member C of the charge image recording medium RM
The electric calf image formed on H L is reproduced by the reproduction system illustrated in FIG. 5 in the following manner. Transparent electrode E
The light modulating material scrap member 1-' M in the reading navel 1 to R T-1 constituted by the light modulating material layer PML made of a material such as lithium diobate single crystal. L changes the plane of polarization of the light passing through it due to the electric field caused by the charge image formed on the surface of the charge retention layer member CHL of the electric image recording medium RM, so that the light emitted from the laser light source LS is emitted from the laser light source LS. When a laser beam deflected in the directions of arrows X and Y in the figure by an optical system and a deflection system that are not connected to each other passes through the light modulating material layer member PML and then passes through the charge image recording medium RM, the laser beam The light flux has a polarization plane that changes in correspondence with the charge image on the surface of the charge retention layer member CHL.
After passing through the charge image recording medium RM, the photoelectric converter PD outputs the information recorded on the charge image recording medium RM as an electric signal.

(Problems to be Solved by the Invention) By the way, in the previously proposed charge image recording and reproducing apparatus, information to be recorded is transferred to the charge image recording medium R.
When recording on M, a minute discharge gap d is provided between the surface of the light guide fa layer member PCL of the write head WH and the surface of the charge retention layer member CRT of the charge image recording medium RM. Therefore, the electric field based on the charge image formed on the photoconductive layer member PCL in the write head WH spreads as illustrated in FIG. In order to reach the surface of the member C H L, the charge retention layer member C of the charge image recording medium RM is formed based on the discharge generated in the discharge gap described above.
The charge image formed on the surface of the write head W
The resolution of the electric seedling image formed on the photoconductive layer member PCL of H is significantly reduced.

In order to solve the above-mentioned drawbacks, the distance d between the surface of the photoconductive layer member I) C L of the write head WH and the surface of the charge retention layer member CHL of the charge image recording medium RM can be made small. When the distance between the surface of the photoconductive layer member PCL of the head WH and the surface of the charge retention layer member CHL of the charge image recording medium RM is small, it is difficult to set the distance uniformly, and RH photoconductive layer member PCL
Problems arise, such as the unevenness of the thickness affects the state of charge image formation. Furthermore, the photoconductive layer member P of the write head WH
C. Even if the surface of the photoconductive layer member P of the write head WH is recorded while the surface of the photoconductive layer member C of the write head WH is in close contact with the surface of the charge retention layer member C of the charge image recording medium RM.
Surface of CL and charge retention member C of charge image recording medium RM
It is impossible to bring the entire surface of the H L into close contact with the surface of the charge image recording medium RM, and unevenness will occur in the charge image recorded on the charge image recording medium RM, so such a solution is not adopted. It cannot be done.

(Means for Solving the Problems) The present invention applies electromagnetic radiation containing information to be recorded to a photoconductive layer member to which an electric field is applied. A charge image corresponding to the information to be recorded is formed, and the charge image formed on the photoconductive layer member is transferred to a charge image recording medium comprising at least a charge retention layer member. The present invention provides a method for recording a charge image in which a charge image corresponding to information to be recorded is recorded on the above-described charge image recording medium.

(Sakugawa) Electromagnetic radiation containing information to be recorded is applied to the photoconductive layer member to which an electric field is applied, and the information to be recorded is recorded in the photoconductive layer member. A corresponding charge image is formed.

The charge image formed on the photoconductive layer member described above is transferred to a charge image recording medium including at least a charge retention layer member.

(Example) Hereinafter, specific contents of the charge image recording method of the present invention will be explained in detail with reference to the accompanying drawings. 1 and 2 are side views schematically showing an example of the configuration of a recording system for forming a charge image to be transferred to a charge pattern recording medium in the charge image recording method of the present invention, and FIGS. FIG. 3 is a side view schematically showing a configuration example of a transfer system for transferring a charge image to a charge image recording medium.

In the recording system shown in FIGS. 1 and 2, ○ indicates the subject to be recorded and reproduced, L indicates the imaging lens,
EM is a charge image forming member, vb is a power source, E is an electrode, and IL is a dielectric layer formed on the electrode E as necessary (the dielectric layer IL is shown by a broken line in FIGS. 1 and 2). This means that this dielectric layer IL is provided on the electrode E as necessary).

The charge image forming member EM used in FIG. 1 has a laminated structure of a transparent electrode Etm and a photoconductive layer member pcLm. The image-shaped member EM has an M-shaped structure including a transparent electrode Etm, a photoconductive layer member PCI, m, and a dielectric layer member II, m.

In the recording system shown in FIG. 1, an electromagnetic radiation image (for example, an optical image) containing information to be recorded is formed by a charge image forming member EM consisting of a transparent electrode Etm and a photoconductive layer member PCLm. In the recording system shown in FIG. 2, an electromagnetic radiation image (for example, an optical image) containing information to be recorded is imaged from the transparent J electrode Etm side to the photoconductive layer member PCLm. is a transparent electrode Etm, a photoconductive layer member PCLm, and the above-mentioned photoconductive layer member P C I
．． A transparent electrode Et in the charge image forming member EM consisting of a dielectric layer ILm which also functions as a protective film;
The image is focused on the photoconductive layer member P C L m from the rn side.

In the recording system shown in FIGS. 1 and 2, an electrode E (a dielectric layer I L is provided on the electrode El as necessary) is provided on the opposite side of the charge image forming member EM from the transparent electrode Etm. A power source vb is connected to the transparent electrode Etm side of the charge image forming member EM and the electrode E, and the photoconductive layer members P C I. An electric field of a predetermined electric field strength is applied to m.

First, in the recording system shown in the first diagram, when an optical image of the subject O is focused on the photoconductive layer member PCLm of the charge image forming member EM by the imaging lens L, the photoconductive layer member PCL
The electrical resistance value at m changes depending on the light amount of the optical image,
A discharge occurs between the electrode E and the object ○ on the surface of the photoconductor layer member P C L m in the charge image forming member EM.
A charge image is formed according to the optical image (information signal to be recorded).

The charge image formed on the surface of the photoconductor layer member P C L rn in the charge image forming member EM as described above is as follows:
Optical image of object O (information signal being recorded)
It is a charge image with high resolution corresponding to

10- The information signal to be recorded in the recording system shown in the third drawing is formed in the form of a charge image on the surface of the photoconductive layer member pcLm. The image is transferred to the charge retention layer member C H L in the charge image recording medium RM by a transfer system such as the above.

That is, in the transfer system shown in Figure 3, EM is /' first
In the illustrated recording system, the information signal to be recorded is formed as a charge image on the surface of the photoconductive layer member PCLm in the charge image forming member EM, and RM is the charge image recording medium. The charge image recording medium RM illustrated in FIG. 3 is shown as having a laminated structure of a charge retention layer member CHL and an electrode Em.

The charge image forming member EM, in which the information signal to be recorded is formed as a charge image on the surface of the photoconductive layer member PCLm, and the charge image recording medium RM are configured so that the information signal to be recorded is formed as a charge image on the surface of the photoconductive layer member PCLm. The surface of the conductive layer member PCLm and the charge retention layer member CHL of the charge image recording medium RM are sandwiched between feed rollers FRI and FR2 in a state in which they are in close contact with each other, and the feed rollers FRI and FR2 described above are driven and rotated. As a result, the charge image forming member EM and the charge image recording medium RM are transported at the same speed in the directions of arrows Fl and F2.

And photoconductive layer member PC in charge image forming member EM
The charge image with high resolution formed on the surface of Lm is transferred to the photoconductive layer member PCL in the charge image forming member EM.
The feed roller FRY,
Charge image recording medium R in the part sandwiched by FR2
It is transferred well to the charge retention layer member C H L in M.

In the transfer operation described above, (1) the transparent electrode Etm of the charge image forming member EM and the electrode Em of the charge image recording medium RM are short-circuited to prevent external noise from being recorded during transfer.

(2) A bias voltage for transfer is applied between the transparent electrode Etm in the charge image forming member EM and the electrode Em in the charge image recording medium RM so that the transfer operation can be performed easily. . The bias voltage for transfer may be set to a state where discharge occurs during the transfer operation, or may be set to a state where no discharge occurs during the transfer operation.

Measures such as the following may also be applied.

In addition, the charge retention layer member CHL in the charge image recording medium RM used as the charge image recording medium RM to which the charge image formed on the charge image forming member EM is to be transferred has, for example, a high insulation resistance value. A polymer material film, a light modulating material, a dielectric layer mixed with fine particles of photoconductor material, or a layer that allows charges to pass through depending on the electric field conditions and a charge retention function. It is possible to use a structure having a laminated structure (for example, a two-layer structure of a silicon oxide film and a silicon nitride film) with a layer having a structure having a structure of 1 to 2, or a structure having various other structures.

Further, the charge image recording medium RM may be in the shape of a disc, tape, sheet, card, or any other arbitrary shape. (These points also apply when the charge image formed on the charge image forming member EM in FIG. 72 is transferred to the charge image recording medium RM).

Next, in the recording system shown in the second diagram, a power supply vb is connected between the transparent electrode Etm side of the charge image forming member EM and the electrode E, and a predetermined electric field strength is applied to the photoconductive layer member PCLm in the charge image forming member EM. When an electric field of
When an image is formed on the photoconductive layer member PCLm of M, the electrical resistance value in the photoconductive layer member PCLm changes depending on the amount of light of the optical image. (a) A discharge was generated between the dielectric layer member ILm of the charge image forming member EM and the electrode E due to the voltage applied between the transparent electrode Etm of the charge image forming member EM and the electrode E by the above-mentioned power supply vb. In this case, no discharge occurs between the dielectric layer member ILm of the charge image forming member EM and the electrode E due to the voltage applied between the transparent electrode Etm of the charge image forming member EM and the electrode E by the above-mentioned power supply vb. is the photoconductive layer member P of the charge image forming member EM.
The charge of CLm is on the surface side of the dielectric layer member IL of the charge image 11-14 forming member EM! - In the case of penetration due to tunnel failure, the photoconductive layer member P of the charge image forming member EM. A charge image is formed on the surface of the dielectric/electric layer member ILm of the charge image forming member EM in accordance with the change pattern of electrical resistance value generated in C Lm corresponding to the optical image.

The dielectric layer member I of the charge image forming member EM is prepared as described above.
The charge image formed on the surface of Lm is an optical image of the object O (
This is a charge image with high resolution corresponding to the information signal being recorded.

In the recording system shown in the second diagram, the information signal to be recorded is formed in the form of a charge image on the surface of the dielectric layer member ILm of the charge image forming member EM. is a transfer system as shown in the third diagram used to transfer the charge image formed on the surface of the charge image forming member EM by the recording system shown in the first diagram to the charge retention layer member CHL of the charge image recording medium RM. In the system, charge image recording medium RM
is transferred to the charge retention layer member CHL in .

The charge image forming member EM shown in FIG. 3 has the same structure as the charge image forming member EM already described with reference to FIG. 1, that is, a layered structure of a transparent electrode Etm and a photoconductive layer member PCLm. The charge image forming member EM is a dielectric layer member ILm of the charge image forming member EM in which the information signal recorded in the recording system shown in the second diagram is in the form of a charge image.
The charge image formed on the surface of the charge image forming member EM is transferred to the charge image recording medium RM by a transfer system as shown in the third figure.
When transferring to the charge retention layer member CHL in FIG. 3, the charge image forming member EM shown in FIG.
Instead, a charge image forming member EM having the configuration illustrated in FIG. 2 is used.

That is, the charge image forming member EM in which the information signal to be recorded is formed as a charge image on the surface of the dielectric layer member ILm, and the charge image recording medium RM are different from each other in the charge image forming member EM. The surface of the dielectric layer member ILm and the charge retention layer member CHL of the charge image recording medium RM are sandwiched between the feed rollers FRI and FR2 in a state in which they are in close contact with each other, and the feed rollers FRI and FR2 described above are driven and rotated. By doing so, the charge image forming member EM and the charge image recording medium R
By transporting the dielectric layer member I in the charge image forming member EM at the same speed in the directions of arrows Fl and F2,
The charge image with high resolution formed on the surface of Lm is transferred to the surface of dielectric layer member ILm in charge image forming member EM, charge image recording, and charge retention layer member CH in recording medium RM.
Feed rollers FRI and FR2 are in close contact with L.
The portion sandwiched between the charge image recording medium RM and the charge retention layer member CHL is well transferred.

As described above, in the charge image recording and reproducing method of the present invention, the charge image formed in a high resolution state on the surface of the charge image forming member EM is transferred to the charge retention layer member C H of the charge image recording medium/body. Since the charge image can be transferred to L in good adhesion, a high-resolution charge image is formed on the charge retention layer member CHL of the charge image recording medium RM.

Note that since the surface of the charge image forming member EM is in close contact with the charge retention layer member C I-I L of the charge image recording medium RM during the transfer operation, the surface of the charge image forming member EM is It is desirable that the charge retention layer member CHL of the recording medium RM has better abrasion resistance, and from this point of view, like the charge image forming member EM illustrated in FIG. 2, the transparent electrode Etm and photoconductive layer member PCLm
The charge image forming member EM having a laminated structure of the charge image forming member EM and the dielectric layer member ILm has the advantage of allowing a greater degree of freedom in the configuration of the charge image forming member EM and the charge image recording medium RM.

Further, during the transfer operation, the surface of the charge image forming member EM and the charge retention layer member C H L of the charge image recording medium RM are brought into close contact, and the charge image forming member EM and the charge image recording medium R are brought into close contact with each other.
The configuration for transporting M is also not limited to the configuration illustrated in FIG. 3.

In the recording system illustrated in FIGS. 1 and 2 described above, two electrodes Etm,
A power source Vb is connected to E and the electric field generated between the 218 electrodes Etm and E is applied to the photoconductive layer member PCLm of the electric image forming member EM. Conductive layer member P C L m
The electric field to be applied during recording may be applied, for example, by corona charging.

The charge image recording method of the present invention is not limited to recording images;
For time-series information such as digital data, the laser beam is modulated using the laser beam to form a charge image corresponding to the information to be recorded on the surface of the charge image recording member EM, and the charge image is transferred to the charge image recording medium. By transferring and recording on RM, time series information such as digital data can be recorded at high recording density.

The charge image recording medium RM on which a high-resolution charge image is recorded as described above is not only used as a recorded recording medium for signal reproduction, but also as a plate for a printer, for example.
Needless to say, it can be effectively used as an information source for display and other purposes.

(Effects of the Invention) As is clear from the above detailed explanation, the present invention provides electromagnetic radiation containing information to be recorded to a photoconductive layer member to which an electric field is applied. A charge image corresponding to the information to be recorded is formed on the photoconductive layer member, and the charge image formed on the photoconductive layer member is transferred to a structure containing at least a charge retention layer member. A method for recording a charge image in which a charge image corresponding to information to be recorded is recorded on the charge image recording medium by transferring the charge image to a charge image recording medium according to the present invention. In this charge image recording method, a high resolution charge image formed on a photoconductive layer member under an applied electric field is transferred to a charge image recording medium. According to the present invention, the above-mentioned conventional problems can be satisfactorily solved.

[Brief explanation of drawings]

Figures 19 and 2 schematically show an example of the configuration of a recording system for forming a charge image to be transferred to a charge image recording medium in the charge image recording method of the present invention. The figure is a side view schematically showing a configuration example of a transfer system for transferring a charge image to a charge image recording medium, FIG. 4 is a side view of a conventional recording system, and FIG. 5 is a block diagram of a reproduction system.

Claims (1)

[Claims] Electromagnetic radiation containing information to be recorded is applied to the photoconductive layer member to which an electric field is applied, thereby charging the photoconductive layer member corresponding to the information to be recorded. The charge image formed on the photoconductive layer member is transferred to a charge image recording medium including at least a charge retention layer member, and the charge image is recorded on the charge image recording medium. A charge image recording method that records a charge image corresponding to information that is said to be