JPS5941957A - Picture device and picture converting method using said device - Google Patents

Abstract

PURPOSE:To form compactly as one body each function of a copying machine, a facsimile and a printer, and to realize a high speed operation, by laminating a stripe electrode and a moving electrode in accordance with a prescribed order, and constituting a picture device. CONSTITUTION:A picture device is constituted by laminating successively a stripe electrode 2(Xi) and a photoconductive layer 3 on an insulating supporting body 1, and providing a moving electrode 4(Y) crossing the electrode Xi, on said layer. In this state, an electric field is generated in the inside of the layer 3 by giving a potential difference between the electrodes 2 and 4, and scanning the electrode 4, charge implantation is executed to the layer 3 from the electrode 2, subsequently, exposure of an optical image executed, and an electrostatic latent image is formed. Thereafter, charge implantation from the electrode 2 corresponding to a charge pattern of the electrostatic latent image is generated by giving a potential difference between the electrodes 2 and 4, and scanning the electrode 4, its current is detected, and a charge pattern signal is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a) conversion from an optical image to an electrostatic m-image, b) conversion from an nt electric signal to an electrostatic m-image, and C) an optical surface f°C.
The present invention relates to an image device capable of converting three modes of conversion from an electric signal to an electric signal, and an image conversion method using the device.

Various +1ljr slag producing devices, such as photocopy machines, facsimiles, and printers, have developed individually up to now, but as more sophisticated information processing is required,
Technologies for combining these functions are attracting attention. In order to achieve this combination, it is conceivable to add, for example, an image reading device and a laser scanning device to an electrophotographic copying machine. is projected onto a photoreceptor to form an electrostatic m-image, or an optical image of the original is converted into a CC
The signal is converted into an electric signal by a reading element such as U, and the laser beam is scanned onto the photoreceptor to form a latent image. This electrostatic latent image is then developed and transferred to obtain a visible image.

To send out a signal as a facsimile, the image is converted into an electrical signal through a reading element.

To create an image as a facsimile or printer, an electrical signal is converted into an electrostatic latent image by a laser scanning device. However, the conversion speed from the reading element to the electrostatic latent image is slower than the conversion speed from the optical system to the electrostatic latent image in normal copying machines. Adding additional functions to a machine significantly increases the cost of the device.Therefore, there is no way to combine such functions without sacrificing the performance of each device (i.e., there is no way to do it compactly and at low cost). At present, the benefits of compounding cannot be fully realized.

The present invention has been developed to improve these points, and to satisfy all of the above t(% RF) using a single FJI device, it combines high-speed copying and facsimile functions at low cost and in a compact manner. It is.

In other words, the present invention has three modes: a) conversion from an optical image to an electrostatic latent image, b) conversion from a K signal to a static signal, and C) conversion from an optical double opening to an 11 signal. The image provided by the device is the one that performs the conversion.

The present invention will be described in detail below with reference to the F1 drawing.

The configuration of the image device of the present invention is shown in FIGS. 1 and 2. FIG. 1 is a plan view of the imaging device.

The signal electrode Xi has a stripe shape. transfer 11 electrode Y)
It is perpendicular to the engineering signal electrode Xi, and can be moved along the Fi signal electrode (as shown by the arrow in Figure @1).

FIG. 2 is a cross-sectional view of the device. A striped signal electrode 2 (Xi in FIG. 1) is provided on the top of the insulating support 1, a photoconductive layer 3 is laminated thereon, and a movable electrode 4 ( Y) in Figure 1 is placed. 8
The movable electrode 4 is simply kept in contact with the photoconductive layer and is movable. Further, a gap may exist between the two. In order to prevent charge injection, it is desirable to provide an insulating layer 5 on the surface of the moving electrode or on the surface 1m of the photoconductive layer.

The photoconductive layer 3 may be a single layer or may be separated into a charge generation layer and a charge transport layer.

The contact between the signal electrode 2 and the photoconductive layer 3 must be such that either holes or electrons can be injected in the presence of an electric field, while blocking the other.

This can be easily achieved through material selection, and the desired charge injection can be produced by the work function relationship between the photoconductive material and the electrode material.

That is, if an electrode material with a work function larger than that of the photoconductive material is used, holes can be injected, and conversely, light guide 'f'
If an electrode material having a work function smaller than the quantity of the rL material is used, 49 electrons can be injected.

Materials for the insulating support 1 and the insulating layer 5 include polyester, polycarbonate, polyurethane, Teflon,
A polymeric resin such as silicone can be used. The thickness of the insulating support 1 is 100 μm or more, and the thickness of the insulating layer IOi of 5 is 100 μm or more.
It is desirable that it is between ~50 μm1. 2-list lig-like tunic, At, Ay, Cr, Ni
.

After vapor-depositing various metals such as Au, Zn, and Cu, a striped pattern is formed using a chemical etching method, or after the metal is vapor-deposited through a mask having striped openings, the mask is removed. can be formed by The thickness of the electrode is usually 500mm~
It is about 5 μm. In addition, the width and spacing of the electrodes are related to the resolution of the reproduced image, but the resolution is 16 dots/I! In order to satisfy the resolution of wI, it is set to about 1130μ and the interval is about 30μ. Further, it is desirable that the width of the moving electrode 4 is about the same as that of the signal electrode.

As the photoconductive layer No. 3, a single photoconductive layer may be used, or it may be separated into a charge transport layer and a 4Wr generation layer. As the charge generation layer, Se, 5eTe
, 5eAs, CdS, Cd's, CdTe, 5eA
sTe.

Inorganic light guide heavy bodies such as amorphous Si:H, another = F,
Phthalocyanine, cyanine, merocyanine, BiJI
Organic photoconductors such as Jium salts can be used. For the charge transport layer 7, an organic semiconductor that is substantially transparent to visible light is suitable. For example, polyvinylcarbazole (PV
A high-molecular organic semiconductor such as K) or a low-molecular electrodynamic substance molecularly dispersed in a resin such as polycarbonate or polyester can be used. Examples of low-molecular electron donating substances include fused polycyclic compounds such as anthrace/, 2,6-dimethylanthracene, phenanthrene, pyrene, and coronene, diphenylamine, dinaphthylamine, triphenylamine, tri-p-)dylamine, N
, N, N', N'-tetraphenyl-1,3(
and -1,4)-phenylenediamine, N, N, N',
N'-tetrabenzyl-1,3(and-1,4)-phenylenediamine.

N, N, N', N' -j tra[2-meboulevé/zyl]-1,3(and-],4)-phenylenediamine, N
.

N, N', N'-tetra[4-chlorobenzyl]
-1゜3(and-1,4,)-phenylenediamine, N
.

N, N', N'-tetraphenyl[:1,1'
-biphenyl) -4,4'-diamine, N,N'-phenyl-N, N'-bis-[3-methylphenyl) -[1,1'-biphenyl] -4,4'-diamine, 4,4 Aromatic amine compounds such as '-bis-[N,N-diebulamino]tetraphenylmethane, 2-(4
Oxazole derivatives such as '-dimethylaminophenyl-5-phenyl-oxazole, thiazole derivatives such as 2-[4'-dimethylaminophenylcubenzthiazole, 2-(4'-chlorophenyl)-4,5-diphenyl-imidazole, etc. imidazole conductor, 1,
3.5-) Liphenylpyrazoli 7% l-phenyl-3
-[4'-diethylaminostyryl)-s-(,i“-
dimethylaminophenyl]-hylasoline, 1-phenyl-3-[4'-diethylaminostyryl]-5-[4"
-diethylaminophenyl]-pyrazoline derivatives such as pyrazoline, 2,5-bis-[4'-dimethylaminophenyl)-1,3,4-oxadiazole, 2,5-
t'sus-4/-diethylaminophenyl]-1,3,
94 oxadiazoles such as 4-oxadiazole, carbazole and carbazole derivatives such as N-ethylcarbazole, N-inglovircarbazole, N-phenylcarbazole, and benzcarbazole can be used.

The thickness of the charge generation layer is preferably 0.05 to 4.0 μm, and the thickness of the charge transport layer is preferably 5 to 80 μm. Further, when a single photoconductive layer is used without separating the charge generation layer and the charge transport layer, the film thickness is preferably between 5 and 80 μm.

Next, the operation of the image device of the present invention will be explained with reference to the drawings. Figures 3-5 illustrate the process of converting optical input into an electrostatic latent image. The signal electrode xi and the like are all set to zero potential, and the moving electrode Y is scanned over the entire surface of the photoconductive layer while a negative voltage is applied to the moving electrode Y. At this time, an electric field is generated inside the photoconductive layer corresponding to the intersection of the signal type IXi, etc. and the moving positive electrode Y, and charge injection of the signal 7 from the pole to the photoconductive layer R1 occurs. (See figure) Here,
It is assumed that only holes are injected and no electrons are injected. In this way, when the scanning by the moving electrode is completed, the fourth
As shown in the figure, U-shaped particles are present near the surface of the photoconductive layer.

Here, when the image r is exposed to the east, the positive charge on the surface disappears in the non-bottom area, and an electrostatic latent rt is formed (see FIG. 5).

6-7 illustrate the process of forming an electrostatic latent image by electrical input. The signal electrode xi is set at zero lightning position and the photoconductive layer surface is scanned at the same time.
etc., zero voltage or E! depending on both f-parallel signals. Apply pressure (see Figure 6).

A signal type 4ijjxi etc. to which a positive voltage is applied and a moving electric current w1.
An electric field is generated inside the photoconductive layer corresponding to the intersection with Y, and a signal! Holes are injected from the pole into the photoconductive layer and are trapped at or near the surface of the photoconductive layer. In this way, it is possible to form a charge pattern on the surface of the photoconductive layer in a direction corresponding to the image f by inputting a stagnation signal (see Fig. 7).
.

It is possible to develop the static latent area formed by the process shown in FIGS. 3 to 5 or the process shown in FIGS. The image can be obtained by transferring it to the corner.

Figures 8 to 9 show the process of reading images and converting them into electrical signals.
Through the process shown in the figure, a charge pattern corresponding to the optical image is formed.

First, no charge exists on the surface of the photoconductive layer corresponding to the intersection between the signal electrode xi-1 and the moving electrode Y. At this time, if a positive 1st position is applied to the signal electrode x1-1, the signal electrode
1 to the photoconductive layer, which can be detected (see FIG. 8). Next, when a positive potential is applied to each signal electrode, no further charge injection occurs at the intersection point VC between the signal electrodes X, i and the moving electrode because charges already exist (91st IXl Hateru). In this way, with the moving electrode set at the zero position, the light guide m is sweating on the layer surface, and at the same time the signal electrode is successively switched from the zero' position to the correct position, and at this time, the signal electrode is moved to the signal position '4. By detecting the flowing current, it is possible to detect fl and the load pattern at the portion corresponding to the intersection of the signal electrode and the moving electrode. In this way, optical input can be replaced with positive electrical signal output.

Examples of the present invention will be described below. Thickness 200μ
m polyester film, opening ri130μ,
Metal masses having striped openings with a pitch of 60 μm were stacked on top of each other, and Ni was deposited on this to a thickness of about 0.5 μm. After that, the metal mask was removed to obtain a signal electrode. Next, selenium was vacuum evaporated onto this to a thickness of 20 μm using a resistance heating type evaporation source to form the photoreceptor portion.

In addition, one strip-shaped electrode was cut from the electrode film 1 obtained in the same manner as above, and this was glued to an acrylic cylinder with a diameter of 20 mm, and the Ni surface was further coated with polyurethane resin to a thickness of 5 μm. It was used as a moving electrode.

Next, the signal electrode is grounded, and the moving electrode surface is brought into contact with the photoreceptor surface with moving N and pole IC-400V applied.
After scanning at a uniform speed of 50 tan/m, image exposure was performed on the surface of the photoreceptor.

Next, the surface of the photoreceptor was developed with positively charged toner, transfer paper was placed on top of the other, and a negative voltage was applied to a conductive rubber roller placed on the back of the transfer paper to transfer the toner to the transfer paper. A great image was obtained.

Next, the moving electrode is grounded and the surface of the photoreceptor is 150M/
At the same time, when the intersection point of the r signal's peak pole and the moving electrode corresponds to the image area, the signal electrode is scanned at a speed of 400
V was applied, and zero V was applied when corresponding to the non-image area.

On the other hand, development and transfer are performed in the same manner as described above,
A good 17iii image was obtained.

Next, with the signal electrode grounded and -400V applied to the movable electrode, the movable electrode surface was brought into contact with the photoconductor surface.
After scanning at a uniform speed of 0 w@/m, the surface of the photoreceptor was exposed to light.

After that, while scanning the surface of the photoreceptor with all the moving electrodes and signals grounded, the signal electrodes are sequentially applied to zero V.
tJVK was switched, and the current flowing through the signal electrode at this time was read. No current flowed in the base where the intersection of the signal electrode and the moving electrode corresponded to both four parts, but current flowed in the base where the intersection of the signal electrode and the moving electrode corresponded to the non-image part. By grounding the signal electrode again and repeating the same operation, it was possible to extract the optical image as an electrical signal.As described above, the two-dimensional imaging device according to the present invention The three functions that could only be achieved using separate devices in the past: converting optical image input into a static [full bloom], converting an electrical input signal into an electrostatic latent image, and converting an optical image manually into an electrical signal are now available.
It is possible to realize this with one device.

This has made it possible to compactly combine the functions of conventional copying machines, facsimile machines, and printers. A great advantage of the device of the present invention, compared to conventional electrophotographic copiers and printers, is that it does not require a corona charger in the formation of the electrostatic charge.

This eliminates the need for a high-voltage power supply, eliminates troubles caused by corona chargers, improves reliability, and enables cost reduction and compactness.

Furthermore, in reading the image [t, the +ttiif image reading is performed in a two-dimensional area having a larger area than the conventional reading element having a one-dimensional array structure, so a high-speed reading operation is possible.

[Brief explanation of drawings]

Figure 1 is a plan view of a single-plane image device, Figure 2 is a cross-sectional view of the image device, Figures 3 to 5G; 7 to 7 are explanatory diagrams of the conversion process from an electrical signal to an electrostatic latent image, and FIGS. 8 to 9 are explanatory diagrams of the conversion process from an optical image to an electrical signal. ... Insulating support; 2, Xi... Signal electrode: 3.
・・Photoconductive area; 4, Y...Movement 11T, 4'0
; 5...M'S marginal layer. Figure 1

Claims (1)

[Claims] 1. A striped electrode and a photoconductive layer are sequentially laminated on an insulating support, and the striped electrode is moved to intersect with the striped electrode. A Ryo f Hiroshi device characterized by being equipped with an Itaku. 2. A striped electrode kite and a photoconductive layer are sequentially laminated on an insulating support, and a striped electrode is placed on top of the striped electrode kite and a photoconductive layer.
Using an imaging device provided with intersecting moving electrodes, the moving electrodes are scanned while applying a potential difference between the striped electrodes and the moving electrodes to generate an electric field inside the photoconductive layer, and photoconductive electricity is generated from the striped electrodes. 1. A method for converting an optical image into an electrostatic m-image, which comprises injecting charge into a static layer and then exposing the optical image to form an electrostatic latent image. 3o Using an image device in which a striped W, N, and photoconductive layer are sequentially laminated on an insulating support, and a movable electrode that intersects with the striped electrode is provided on the layer, the striped electrode and the movable An electric field is generated inside the photoconductive layer by scanning the moving electrode while applying a potential difference corresponding to the image between the striped electrode and the photoconductive layer. Sub 1'I!
Electrostatic m from an image-like electrical signal characterized by forming
How to convert an image into an image. 4. Insulating support” Second, a striped electrode and a photoconductive layer are sequentially laminated I7, and a striped electrode is placed on top of that.
Using an image device (°C) in which intersecting moving electrodes are provided, the moving electrodes are scanned while applying a potential difference between the striped electrodes and the moving electrodes to generate an electric field inside the photoconductive layer, and light is emitted from the striped electrodes. Charge is injected into the conductive layer and then an optical image is formed. A static N latent image is formed by applying a static N latent image, and then the moving electrode is scanned while applying a potential difference between the striped electrode and the moving electrode to form a static N latent image corresponding to a static charge pattern with a threshold of 11 m. 1IJi'i (an image conversion method) from an optical image to a droplet-like signal, which is characterized by causing polar charge injection and detecting its flow.