JPS587155A - Recording device - Google Patents

Abstract

PURPOSE:To prevent toner particles from attaching to the face of a recording material not recorded, and from staining it, by bringing a liquid developer obtained by dispersing the toner particles into an electrically insulating solvent, into contact with only one side of a recording material supplied between both of a recording electrode and an opposite electrode and one of the 2 electrode. CONSTITUTION:A recording material 5, such as electrostatic recording paper or plain paper, is conveyed in the direction of subsidiary scanning, i.e., rectangular to a material 7 in a recess, between a recording electrode 3 and an opposite electrode 4. A liquid developer 2 in a tank 17 is drawn up through a suction tube 16 by driving a pump 18, introduced into a groove 9 for introducing it, passes over the upper end of a partition wall 12, and led toward a developer recovering groove 10, thus permitting only one face of the recording material 5 to be recorded on to be brought into contact with the developer 2, and the opposite side not used for recording (the side of the electrode 4) to be prevented from attaching of the toner and staining.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides the following advantages: l); In addition to supplying a recording medium between a recording electrode and a counter electrode that are opposed to each other, one particle is placed in an electrically insulating solvent. When the dispersed developer is brought into contact with the electrode and the recording medium, and a recording voltage is applied between the electrodes and the recording medium, a recording voltage is applied between the electrodes and the recording medium.
The present invention relates to a recording apparatus that performs recording by imprinting the 1-chip l'v on the recording medium.

Fig. 1 shows a conventional type of apparatus in which toner particles are dispersed in a solvent of (σ15, electrically insulated and A recording electrode 3 and a counter electrode 4 are immersed in the developer 2 with the recording electrode 3 and the counter electrode 4 facing each other.
and the counter electrode 4, both sides of which are immersed in the developer in the JJ state, are transported in the direction of the arrow.

Then, in this state, the recording line 6 to the recording line 3 is read.
7 When a recording voltage is applied between the electrode 3 and the counter electrode 4,
Due to the Coulomb force, the toner particles adhere to the narrow part between the recording electrode 3 and the counter electrode 4 of the recording body 5, and thereby recording is performed (the recording electrode of the recording body 5 Which surface on the opposing electrode 4 side is to be recorded is determined by the polarity of each electrode 3゜4 and the charged polarity of the 1-sub-particle, and in Figure 1, Recording is performed on the surface on the recording electrode 3 side.)

However, in such an arrangement, since both sides of the recording medium 5 are not brought into contact with the developer 2, frictional electrification of the recording medium 5 causes the I- There was a drawback that the Qi particles were attached and the recording medium 5 was not tLl.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and an object of the present invention is to provide a recording device that does not perform recording and does not allow the adhesion of [1-Q particles].

The present invention will be described below based on the embodiment shown in FIG. 1f11.

In FIGS. 2 and 3, the mold cleaners 74711 & 11b are provided with their openings facing upward in the main scanning direction. The recess 8 further includes a developer introduction groove 9, a developer recovery groove 10, and the like. The developer introduction groove 9 and the developer recovery groove 10 are separated by a partition wall 12 formed in the recess member 7, and the upper end of this partition wall 12 is the upper end of the outer peripheral wall 13 of the recess 41. It is slightly lower than that.

A large number of elongated recording electrodes 3 penetrate the partition wall 12 in the vertical direction. These recording electrodes 3 correspond to respective pixels, and the upper ends of the recording electrodes 3 are arranged in a line at the same pitch on a straight line extending in the main scanning direction. Still, the upper end of each of the recording electrodes 3 is at the same height as the upper end of the partition wall 12. Note that the recording electrodes are electrically insulated from each other. The spaces between the developer introduction groove 9 and the cleaning groove 112L and between the developer recovery groove 10 and the cleaning groove 11b are formed integrally with the recess member 7, respectively, and are formed by partitions 58 and 14,15. The -1 ends of these partition walls 14 and 15 are at the same height as the "1" ends of the outer peripheral wall 13. The developer introduction groove 9 is connected to the developer tank 1γ via a suction pipe 16. The developer tank 17 stores a developer 2 in which 1-Q particles having a diameter of about 0.1 to 1 μm are dispersed in an electrically insulating solvent such as a petroleum-based or Freon-based solvent. The toner particles are made by adsorbing a resin or an additive component that imparts properties such as dispersibility, minimum controllability, and fixability to a pigment such as carbon black.

The developer recovery groove 10 and the cleaning groove 11&, 1
1b is connected via a recovery pipe 19 to the suction port of a developer circulation pump 18 that sucks and discharges gas and liquid, and the discharge port of this pump 18 is further connected to the developer circulation pump 18 via a recovery pipe 2o. It is connected to the liquid tank 17.

A counter electrode 4 is installed on one side of the concave member 7 to face the recording electrode 3, and between the counter electrode 4 and the recording type $i3 there is provided an electrode 6, 2 that corresponds to an image signal from a recording power source 6. A recording voltage is applied.

Reference numeral 5 denotes a recording medium such as electrostatic recording paper or plain paper, and a recording paper supply means (not shown) moves between the recording electrode 3 and the counter electrode 4 in the sub-scanning direction, that is, in the direction perpendicular to the recessed member 7 (arrow is transported in the incoming direction).

During this conveyance, the recording medium 5 is transferred to the outer circumferential wall 1 of the recessed member 7.
3 and the -F ends of the partition walls 14 and 15 (in order to make it easier to understand the operation of this embodiment, in FIG. (The gap between the two ends is slightly exaggerated).

Next, the operation of this embodiment will be explained. In the state where the recording body 5 has been conveyed between the recording electrode 3 and the counter electrode 4,
When the pump 18 is operated, the pressure in the recess 8 and the cleaning grooves 11&, 11b is reduced.

Therefore, the developer 2 in the developer tank 17 is sucked up via the suction tube 16, and the developer inlet groove 9
Further, this developer 2 passes through the upper end of the partition wall 12 and heads toward the developer collection a1°. This /(me, l' of the recording electrode 3: Y:t,! and IJ(, the retaining liquid 2 contacts 1./, - 1G) on the lower surface of the recording body 5.

In this state, when a recording voltage is applied from the recording power supply 6 to the recording electrode 3 and the facing electrode 4, the recording voltage is applied between the recording electrode 3 and the facing electrode 4. :The I-Qi particles in the developer solution 2 around the heel are
The cuff that is injected from the counter electrode 4 into the recording material 5 is drawn toward the recording material 5 by the coupling agent acting between the cuff and the charge (negative charge in FIG. Then, 1; recording corresponding to 17 is carried out.

On the other hand, pass the -1 end of the partition wall 12 through the developer solution 2.
The developer enters the developer recovery groove 10 and is returned to the developer tank 1 through the recovery pipe 19, pump 18, and recovery pipe 20.

In fact, the portion of the recording body 5 that is in the recess 8 has been melted by the developer 2; (However, during pump operation, external air passes through the cleaning groove 1 through the slight gap between the upper end of the outer peripheral wall 13 of the recessed member 7 and the holder 5, as shown by arrow B.) 112L.

11b. Therefore, - of the outer peripheral wall 13
) An air curtain is formed between the one end and the recording medium 5, which is made up of air flowing from the outside toward the cleaning grooves 11fa and 11b.

Therefore, when the recording medium 5 is conveyed in the direction indicated by the arrow 7, the part of the recording medium 5 wetted with the developer 2 of the outer peripheral wall 13 is wetted by the developer 2. When reaching the upper end of the groove 11a side, the developer 21 adhering to the recording medium 5
Cleaning t1'1j1 with the air curtain
Since the force directed inward to the inside of the cleaning groove 1a is applied, it is impossible to follow the recording medium 5 and exit the cleaning groove 11a.
It is separated from the recording medium 6 and returned to the developer tank 17 from the cleaning groove 11a via the collection pipe 19, pump 18 and collection pipe 20.

On the other hand, since the force of the air curtain is strong enough, the particle t+:J:, which has arrived at the recording medium 5 due to the application of the recording voltage MiJ, is sufficiently strong.
1-1 attached to the IJ - exits to the outside of the Jung groove 11a. The recording medium 5 has toner particles deposited on the 73 part corresponding to the image signal, and the developer 2 has not been removed. It is in a dry state.

In this recording device, only the surface of the recording medium 5 on which recording is performed is brought into contact with the developer 2, so that the toner is absorbed even when no recording is performed (on the side of the counter electrode 4). I arrived there and never missed a trip.

FIG. 4 shows another embodiment of the present invention, in which a recess 8 is provided, saw recesses (', (7 and 1), and cleaning members 212L, 22b are provided separately, and 11. members 21 & 21b respectively; Ll, Klee-Jung groove 11a;

11b is provided.

The cleaning grooves may be provided on both sides as shown in the drawings, or may be one on the recording end side in the direction in which the recording medium travels (7) If the air curtain is completely formed, it is not necessary.

Other configuration d: This is the same as in the embodiment described above, and the same effects as in the embodiment described above can be obtained in this embodiment as well.

In each of the above embodiments, a developer is brought into contact with the recording electrode so that recording is performed on the surface of the recording body on the recording electrode side. Recording may be performed on the surface facing the counter electrode.

J: The position on the side of the counter electrode 4 Jl. It is not necessarily necessary to strictly oppose the recording electrode 3 as shown in the drawing, and the position where the mold surface can be injected into the recording body 5 may vary. Even if it's in the middle of the day, it's not too big. Further, in this embodiment, the recessed portion 8 is arranged upward, but it is not necessarily limited to the 1- and 1- directions.

As is clear from the above (a), the recording device according to the present invention is capable of applying a developer comprising l-Qi particles dispersed in an electrically insulating solvent to only one of the recording electrodes 1 and one of the opposing electrodes. By contacting only one surface of the recording medium supplied between the two electrodes, it is possible to prevent 1-chi from adhering to the surface of the recording medium on which recording is not performed and causing 'lr; This is b), which allows you to obtain the desired effect.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view of a conventional recording device, Fig. 2
\- is a schematic perspective view of a recording device according to an embodiment of the present invention;
FIG. 4 is a schematic sectional view of the main part of the embodiment shown in box 1 in Figure d, and FIG. 4 is a schematic sectional view of the main part of another embodiment of the present invention. 2... Developer, 3-... Recording electrode, 4...
... Counter electrode, 5 ... Recording body, 6 ...
Recording power supply, completed...Recessed part assembly, 8...Recessed part,
17...Developer fluid gunk, 18...Developer fluid circulation pump. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 392 Figure 4 --- 393 --

Claims (2)

[Claims] (1) Recording electrodes facing each other 1. - and a counter electrode;
Recording body supply means for supplying a recording body between the two electrodes; 1
- A developer comprising Qi particles dispersed in an electrically insulating solvent is supplied between one of the two electrodes and only one surface of the recording medium. A recording apparatus comprising: a developer contacting means for contacting the electrodes; and a recording voltage applying means for applying a recording voltage between the two electrodes. (2) The developer contact means is the concave portion 4. ” and connected to the recess provided in this recess member II-A= :ll
, a developer tank for storing liquid, and a pump for suctioning and discharging gas and liquid, the suction port being connected to the recess and the discharge port being connected to the developer tank.
- 1 of the recording electrodes or counter electrodes 2 is housed in the recessed portion of one electrode facing the other electrode, and the other electrode is placed outside the recessed portion, and 2. The recording apparatus according to claim 1, wherein the body supply means supplies the recording body between the two electrodes while bringing the recording body into sliding contact with the upper end of the concave portion H.