JPS59133575A - Picture recording device - Google Patents

Abstract

PURPOSE:To enable direct connection of a signal electrode and a signal electric power source and simplify the connector part by providing a device that moves toner accumulated on a wiring substrate forcibly in the axial direction of a toner carrying roller. CONSTITUTION:Toner 6 that passed on a recording electrode 1 enters a container 10 from an opening 10b in the upper part of the container 10. As shown in the figure, the container 10 hold a toner carrying roller 4 on right side and upper part and lower part are connected at the connecting part 10c. When a screw 10 is rotated, toner 6 on the upper side of the container 19 is sent to lower side through the connecting part 10c. The toner 6 sent to lower part is carried to the recording electrode 1 by rotation of a magnet 5, and recorded on a recording medium 7 according to a signal. Remaining toner enters the container 10 from the opening 10b in the upper part of the container 10, and this circulation is continued. By this constitution, it becomes possible to connect a print substrate directly to a signal power source 3 or place the signal power source directly on the substrate 2. Thus, the connector part can be made simple.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses an image recording device, particularly a recording electrode equipped with a large number of electrically independent electrode groups, and supplies conductive magnetic toner (hereinafter referred to as toner) onto the recording electrode. , relates to a device that performs recording by applying a voltage to recording electrodes.

Conventionally, this type of device has a cylindrical magnet roller surrounded by a cylindrical toner transport roller, a recording electrode is placed on the toner transport roller, and a wiring from the recording electrode is brought out to the side and connected to a signal electrode (for example, as described by Tokkosho, However, when these methods are used, the connector part becomes complicated.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image recording apparatus that eliminates the drawbacks of the conventional example described above and eliminates the complexity of the connector portion.

An image recording apparatus of the present invention that achieves the above object includes a wiring board that connects a recording electrode group provided on the circumferential surface of the toner conveying roller and a signal power source along the circumferential surface of the toner conveying roller. A toner reservoir is configured at the bottom, and during recording, toner is transported from the toner reservoir by rotating a magnet.
The toner is conveyed along the circumferential surface of the roller, passes through the recording electrode group, and remains on the substrate, forcibly conveyed in the axial direction of the conveyance roller and returned to the toner reservoir.

With the above configuration, there is no need to extend the wiring board connecting the recording electrode group and the signal power source to the side of the toner transport roller, and it becomes possible to simply connect the recording electrode group and the signal power source.

Embodiments of the present invention will be described with reference to the drawings. 1, 1 and 3 show embodiments of the present invention.

FIG. 1 is a vertical sectional view showing a schematic structure, FIG. 2 is a plan view showing 7 parts, and FIG. 3 is a perspective view. l is the recording electrode,
It is directly connected to the signal power source 3 by a flexible printed circuit board. The toner transport roller lag is fixed.
A rotating magnet roller 3 is disposed inside. toner 6
(J) is contained in the container 10 and is transported within the container io by the screw /I. The recording medium consists of an electrode t which acts as a counter electrode to the recording electrode 1, and an insulating thin film covering the surface of the electrode t.

When the magnet roller j is rotated in the A direction, the magnetic field causes the toner t to move on the toner transport roller in the B direction, which is opposite to the rotation direction of the magnet roller 3, and pass over the recording electrode. When a positive or negative voltage is applied to the recording electrode in this state, the toner t adheres to the recording medium. The voltage applied to the recording electrode is normal! It is about TO-JOOV.

On the other hand, the recording medium 7 has the electrode j and the insulating thin film covering the surface of the electrode j, and the insulating thin film D is used as the toner t.
This is necessary for good adhesion of the toner, and without it, the charge of the toner will leak and no recording will be made. Therefore, this insulating thin film 9
There is no need for a very high resistance value; it is sufficient that the resistance value is sufficiently higher than the resistance value of the chain-shaped toner A. If the toner 6 is used as in the embodiment, paper whose surface has been treated with a resin may be moved over the electrode g (4I) instead of the configuration shown in FIG. The image on the printed recording medium 7 may be fixed as is, or it may be transferred to another recording paper and then fixed.

The toner 6 that has passed over the recording electrode 1 enters the inside of the container 10 from the upper opening/Q1) of the container 10.

As can be seen from FIG. 3, which is a perspective view, the container 10 is connected to the upper and lower connecting portions 10 by sandwiching the toner conveying roller lug on the right side of the figure.
The top and bottom are connected at 0.

Therefore, by rotating the screw // disposed near the top of the printed circuit board, the toner 6 that has entered the inside of the container 10 is conveyed to the right side in the figure, and then transferred to the bottom again via the connecting part IOA. It can be sent to.

The toner 6 sent to the lower side is carried by the recording electrode 1 again by the rotation of the magnetic roller 3 as described above and is recorded on the recording medium according to the signal, and the remaining toner 6 is transferred to the upper opening 10 of the container IO.
Enter the container io from b.

For example, when the recording width of the recording medium 7 is selected as altIlll and a resolution of 10 lines per /IIK is to be obtained.

Since 2/60 recording electrodes are required, using the conventional method of extending the wire from the recording electrode 1 to the side of the roller lag for toner transport would make the connector part very complicated, but in this example, the printed circuit board was used. These complications can be solved by connecting directly to the signal power source 3 or by mounting the signal power source 3 directly on the board.

By the way, as shown in FIG. 2, two screw rods //a are arranged in parallel in the toner reservoir lOa at the bottom of the container 10, sandwiching the partition lo1:+. It is moving in a circular manner as shown by the arrow at the bottom. As a result, the toner 6 is stored almost evenly on the surface of the toner transport roller.

Other embodiments of the invention are shown in FIGS.

Figure 3 shows a cross-sectional view, and Figure 3 shows a longitudinal cross-sectional view. The toner t is transferred from the bottom of the container l:2 to the magnetic roller! The toner is conveyed on the toner conveying roller rack by the rotation of the toner. The toner 6 remaining after passing through the recording electrode is applied to the upper part of the inside of the container 2 (7) through the opening 2b at the top of the container 2 (FIG. 3).

In this embodiment, the toner 6 accumulated in the upper part of the container 12 is conveyed to the lower part of the container 1 by the sheet /3.

The sheet 13 is engaged with the driving roller /a, the driven roller 13, and the tension rollers /6°/7, 1g, and /9, and is moved in the direction of arrow C by the driving roller puffer. Then, the toner 6 on the sheet lJ moves to the right, passes through the upper and lower communication portions 1sa (FIG. 1) of the container l, and can be sent to the lower part/2d again. Two screw rods //a are arranged in parallel at the bottom of the container /2 with a partition 12C in between, and in order to circulate the toner A, change lθb to lθC in Figure 3.
This is the same as replacing 10a with lcod.

As a means for conveying the toner 6 accumulated in the upper part of the container to the lower part of the container, a moving permanent magnet or the like may be provided instead of the sheet /J.

As explained above, by providing a device that forcibly moves the toner accumulated on the wiring board in the axial direction of the toner transport roller, the signal electrode can be connected directly to the signal power source or made on the same board. This eliminates the complexity of the connector part.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a plan view showing a part of FIG. 1, FIG. 3 is a perspective view of FIG. 1, and FIG. 9 is another embodiment of the present invention. An example cross-sectional view, FIG. 3 is a vertical cross-sectional view of FIG. L...Signal electrode Co...Printed circuit board 3...Recording power source D...Toner transport roller Ta...Magnet roller t...
Conductive magnetic toner 7...Recording medium q--Insulating thin film IO...Container l/...Screw //a...Screw rod/3 fists/sheet. Patent applicant Canon Co., Ltd. Agent Arai-be (t)

Claims (1)

[Claims] A fixed toner transport roller with a built-in rotatable magnet roller, a recording electrode provided with a large number of electrically independent electrode groups disposed on the toner transport roller, and a minute gap maintained with respect to the recording electrode. A counter electrode facing the recording electrode and a toner carrying surface are arranged on the recording electrode side of the electrode, conductive magnetic toner is supplied onto the recording electrode by rotation of the magnet four, and a signal voltage is applied onto the recording electrode. In an image recording apparatus that forms an image on the toner carrying surface by applying a voltage, a wiring board connecting the recording electrode group and a signal power source is provided along the surface of the toner transport roller, and a wiring board is provided below the transport roller. A toner reservoir is configured, and during recording, the rotation of the magnetic roller transports toner from the toner reservoir along the circumferential surface of the transport roller, and the toner that has passed through the electrode group and remains on the substrate is transported in the axial direction of the toner transport roller. An image recording device characterized in that the toner is forcibly conveyed to the toner and returned to the toner reservoir.