JPS5844457A - Method and device for image recording - Google Patents

Abstract

PURPOSE:To reduce power consumption and to obtain stable images for a long period by applying an AC voltage control members, such as a toner conveying member and an opening plate, and thus weakening sticking strength on the toner conveying member and performing recording at the low applied voltage. CONSTITUTION:A recording member 5 is carried, as shown by an arrow, from a roll by a driving roller 15 in close contact with a back electrode 6. A control member consists of a signal electrode 1, an insulating material 2, a base electrode 3, etc., the insulating material 2 has a 50mum thickness, and they are provided with openings 4 with a 140mum diameter to allow toner 11 to pass through them. A toner conveying member 7 is a nonmagnetic sleeve and holds one-component conductive magnetic toner 11 in a container 13 around it by an internal magnet 12. A 50V signal voltage is applied between the electrodes 1 and 3 from a signal power source 10, and a 300V of 2kHz AC voltage is applied between the toner conveying member 7 and base electrode held at an interval of 200mum.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is based on an image forming method using an electric field generated in the apertures, and an electric signal applied directly to the tatami mat to form a powdery developer.
11th grade technology is Hirome aS @1a98!5689
It was proposed in issue 9ss. This method uses two electrodes with an insulating layer in between and holes in a row (hereinafter referred to as apertures).The apertures are charged and large toner particles pass through them. The device is placed on the opposite side of the toner supply source to obtain an IIi image by the toner that has passed onto the recording member. However, in this conventional method, the toner is not supplied uniformly, which tends to cause unevenness in the image on the recording member, making it difficult to record at high speed, and also causing toner to clog the camera board. The object of the present invention is to eliminate the drawbacks of the above-mentioned conventional example and at the same time: 1. An object of the present invention is to provide a method and apparatus that enable stable toner supply and long-term stable image formation.
- The present invention achieves the above objects, - a developer support carrying and conveying component developer, a control means having first and second electrodes with an insulating layer interposed therebetween, and having an aperture; a recording material for receiving the controlled developer from the developer support through the control opening;
applying an alternating voltage for forming a first electric field directed toward the li;jp stage; applying a signal voltage for forming a second electric field for controlling passage of the developer between the first and second electrodes of the control means; Directing the developer toward the recording material at the connection between the control means and the recording material tX3
In the image recording method in which an image is formed on the recording material by applying a DC voltage to form an electric field, the present invention also includes a 3JS agent support carrying and conveying a two-component developer and an insulating material. control means comprising a pace electrode on the support side of the layer and a signal electrode on the opposite side of the insulating layer; a recording material receiving controlled developer from the developer support through the control aperture; An alternating bias applying means for directing the developer toward the control means is provided between the support and the control means, a signal source to the signal electrode of the control means, and a developer is provided between the control means and the recording material. This is a one-time recording device having a direct current bias applying means for directing the recording material toward the recording material.

With the above configuration, a uniform and uniform Ili image can be obtained by responding to moderate changes in the recording speed, for example by changing the AC frequency i from low speed to high speed. At the same time, due to the effect of the alternating electric field, the toner is reciprocated between the pace electrode and the toner transport material, and there is also a radial effect of the aperture, making it possible to obtain the best image for a long period of time.

The combination of a more resistant toner and a magnetic field also makes it possible to reduce toner scattering. ' 2 ``Figure 1 is a plan view showing the configuration of the Hiko-7 percha board that can be used for the present invention'', and Figure 1 Bd Figure 1 I
2 is a block diagram showing one embodiment of the present invention, and FIG. 6 is a block diagram showing another embodiment of the present invention.

゛In Fig. 1, 1- is a signal electrode that can be applied independently and individually, 6' is a pace electrode that is continuous over all or multiple holes, and 2 is a The insulating member electrically insulates the signal electrode 1 and the pace electrode 3. Reference numeral 4 denotes a hole, which is an opening extending through the electrode paste electrode 3 and the insulating member 2 with the same area. □ The basic operation of a nuclear power plant □ is explained using Figure 2.
In the figure, 6 is the back electrode, and 5 is the recording member.
is in close contact with the back electrode '6. Reference numeral 7 denotes a toner conveying section made of a non-magnetic material, and 11 a one-component insulating magnetic layer coated uniformly on the toner conveying member 7. Joy 1
As shown in Figures A and B, the back electrode 6 and the signal electrode 1 are arranged between the back electrode 6 and the toner transport member 7, and the toner transport member 7 and the pace electrode are arranged between the back electrode 6 and the toner transport member 7. facing each other. Further, 8 connects an AC power source to the base '*L pole 3 and toner transport s#7. Reference numeral 9 is a direct current power source connected to the back electrode 6 and the pace electrode 3.

10 is a signal power source, which is connected to the signal electrode 1 and the pace electrode 5.

In the above configuration, the pace electrode S, the toner, and the conveying member 7
In between, the AC power supply 8 generates AC voltage 5 voltage or FIL! When a lE biased alternating current voltage is applied, the toner 311 on the conductive material 7 moves between the pace electrode 6 and the toner transport member 7. At this time, -signal electrode 1 and electrode 6 are connected to signal power source 1.
When a voltage is applied from 0 to 1111 m, the toner 1
1 passes through the aperture 4 and is attracted to the signal electrode 1. Furthermore, since a DC voltage is applied between the back electrode 6 and the pace electrode 6 from the DC power supply 9, the toner 11
is further accelerated and adheres to the recording member 5. , - When there is no signal voltage from the signal voltage 1110 to the signal electrode 1 and the pace electrode 3, or when an electric field in the opposite direction is applied, the dynamic toner does not pass through the aperture 4. Further, between the base electrode 5 and the toner conveying member 7, the toner moves back and forth due to the action of an alternating current voltage, and at the same time, a cleaning effect is also achieved. As described above, when a signal is applied to the signal electrode 1 in an imagewise manner, an image of a toner image is formed on the recording member, and then the toner image is fixed on the recording member 5 by heating or pressure.

If the polarity of the toner particles 11 is negative←), the voltage supplied from the signal power supply 10 is negative to the polarity pace electrode 6, positive (a) to the signal electrode 1, and positive (a) from the DC power supply 9. The supply voltage polarity is set to be negative for the pace 1 pole and positive for the H1 back electrode 6. Further, although the ground potential may be placed anywhere, the pace electrode is usually grounded. And toner 1
On the other hand, the polarity of 1 is positive (if (1), the polarity of Fi mentioned above is reversed.

FIG. 6 is a shoulder diagram of one embodiment of the present invention, which will be explained below. In the figure, the same reference numerals as in Fig. 2 mean that they have the same function. It is driven by a drive system not shown in the figure.The gap between the back electrode 6 and the signal electrode 1 is as follows.

In this example, the sound level is 600, and a DC voltage of 600 V is applied between the back electrode 6 and the base electrode 3 from the DC power supply 9. The electric field between the back electrode @6 and the base electrode is 1 - 50
0 to 1 soj'v is a wide range. The signal electrode 1 and the base electrode 3 are made of insulating material to insulate 50 voices, and from the signal electrode 1110, a DC voltage of 50 V can be applied as a signal voltage only to the parts necessary for character generation. As described above, the control S# is provided with an opening 4 having a diameter of 140 mm so that the insulating magnetic toner 11 can pass through the pace electrode 1c3, the signal electrode 1i1, and the insulating member 2 as far as possible.

are arranged in a staggered manner in the 111th square. For example, when - of the recording member 5 is 297-, 2,676 openings 4 are formed in the width direction of the recording part in this control part #, and each signal electrode 1 is connected to the signal electrode 11 independently. [I UK contact]
has been done. Reference numeral 12 denotes an identification magnet, and o13a toner container 1 is contained in the hollow cylinder of the toner conveying member 7. 14 is an identification magnet, and an insulating magnetic toner 1 is placed on the toner conveying member 7 by a magnetic blade.
Used to apply 1 evenly.

On the other hand, the distance between the )ner conveying member 7 and the base electrode 3 is 100
The range of ~500 degrees Celsius is uniform, and in order to improve the recording speed, it is better to have a narrower range so that the toner is not pressed and agglomerated. In this example, this interval is set to 200 microns, and the IC voltage applied between them is 41,300 V effective.
KHll ToL*.

Under the above conditions, the diameter of the toner conveying member 7 is 32 mm.

When rotating at a rotation speed of 150 rpwh, the toner container 13
The insulating magnetic toner 11 #i) adheres to the toner conveying member 7 while being attracted by the fixed magnet 12, and is further coated uniformly onto the toner conveying member 7 by the KJIl material blade 14. . In this state, record member 5 2.
While moving in the direction of the arrow at 50sa/sea,
When a necessary signal pulse is applied to the signal electrode 1 from the magnetic toner 110, the magnetic toner 11 adheres to the brass member 5 in a manner similar to that of the magnetic toner 11, and the letters or the map are visualized. The good magnetic toner 11 thus deposited on the recording member 5 is fixed onto the recording member 5 by pressure fixing at 16.

In the above embodiment, an example in which the toner is directly fixed onto the recording medium 5 has been described, but of course, the toner is transferred and fixed to another recording medium under an electric field such as a corona discharger, and the toner is first transferred to the recording medium. 5
can also be reused. This is an effective method when the distance between the aperture board and the recording medium cannot be maintained accurately because sheet paper is used as the recording medium.

In addition, when using non-magnetic toner, a conductive substrate with a brush or uneven surface is used as a toner conveying member, and this push or uneven surface allows the toner Yrm to be
It may also be transported. When using a two-component developer, a conventional developing device such as a cascade magnetic pusher brings the two-component developer into contact with the toner transport member to form a thin layer of toner on the toner transport member; By using this thin layer of toner, it can be substantially regarded as a mono-component toner, and results similar to those obtained with the mono-component developer of the embodiment can be obtained.

As explained above, by applying an AC voltage between the toner conveying member and the control member such as the aperture, the adhesion force of the toner to the conveying lI# on the toner conveying member is weakened, and recording can be completed with a low applied voltage. Furthermore, when the toner reciprocates between the control means, the toner itself cleans the toner conveying member side of the control means, so it remains stable for a long period of time.
0 which makes it possible to obtain a 1i image

[Brief explanation of the drawing]

#11 M・B is a sectional view of an example of a control member, 2nd IjI! J
and Figure 3. In Figure 0, which is a sectional view showing one embodiment of the present invention, 1 is a signal electrode, 3 is a pace electrode, 4 is an opening, and 5 is a cross-sectional view showing an embodiment of the present invention.
Shown below are lIk parts and toner transport parts from 7 companies. 11 is an insulating magnetic toner, 8 is an AC power source, 9 is a DC power source, and 1G is a signal ° (character generation) m source. Go to figure ￥j

Claims (2)

[Claims] (1) - A developer support carrying and conveying the component developer, a control means having a second electrode and an aperture through an insulating layer, and a control means for controlling the control aperture from the developer support. It has a 11L silver material that passes through and receives a controlled developer. A rather large cross-sectional voltage is applied between the support and the control means to form a first electric field directed toward the copper agent control means, and the passage of the developer between the first and second electrodes of the control means is controlled. A signal voltage forming a second electric field is applied, a signal voltage forming a controlling second electric field is applied, and a connection KW between the control means and the recording material is applied.
4. Image recording method. (2) - A developer support carrying and conveying the component developer, a control means for disposing a base electrode on the support side through an insulating layer and a signal electrode on the opposite side of the insulating layer, a recording material that passes through the control aperture and receives a controlled large amount of developer; an alternating bias applying means for directing the developer toward the control means between the support and the control means; A signal source to the signal electrode, a signal source to the signal electrode of the control means, and a direct ILA bias applying means for directing the developer toward the recording material at the interface between the control means and the recording material.
Je brass device.