JPS60205471A - Recorder using photoconductive toner - Google Patents

Abstract

PURPOSE:To make it possible to obtain uniform spraying and good image by forming a magnetic brush by a sprayer and using an endless base body electrode and a counter electrode. CONSTITUTION:A sleeve which has magnets 6 rotating in an arrow direction is provided in a sprayer provided to the outside peripheral of a base body electrode 1. The photoconductive toner A supplied to the sprayer 3 is agitated in the sprayer 3 to form a magnetic brush on the magnets 6. The brush shows napping toward the electrode 1 as the napping height (conveying rate) is controlled by a napping cutting part 7. The photoconductive toner A near the top end of the napped carrier scatters onto the electrode 1 electrified-by the high-voltage potential impressed thereto so that the uniform photoconductive layer is formed. An exposing part 10 applies a light source to, for example, the positive original on an original platen and performs image exposing by the light reflected therefrom. The toner in the part corresponding to the dark part of the original where light is not transmitted is held electrified to the + polarity and the toner electrified to the + polarity is scattered onto the electrode 2 which is impressed with -. The toner A failing to scatter onto the electrode 2 is moved onto the electrode 1 from which the toner is returned into the sprayer 3 and is reused.

Description

Detailed Description of the Invention [Technical Field] The present invention relates to a recording device that uses a photoconductive toner, and more particularly to a recording device that can be preferably applied to an electrophotographic method. The present invention relates to a recording device using.

[Prior Art] In general, copying methods using electrophotographic techniques include, for example, the electrofax method in which copies are made directly onto electrophotographic photosensitive paper containing a zinc oxide-resin dispersion system, or the copying method in which copies are made on electrophotographic photoreceptors such as selenium. One example is the xerography method, in which copies are obtained by transferring a toner powder image onto plain paper, but both methods require a development process using toner powder, making electrophotographic copying equipment complicated and expensive. There is. In addition, in these methods, since the copying system is composed of independent members such as the photoreceptor and toner powder, one of the above two members may be affected by the performance of the other, for example, charging due to optical fatigue of the photoreceptor. The deterioration of the characteristics makes it difficult to obtain high-quality copies, and there are problems such as maintenance becomes difficult because the photoreceptor and developer must always be maintained at the desired performance.

On the other hand, in order to overcome these drawbacks, a photoconductive toner has been developed in recent years that has the functions of both a photoreceptor and a developer.

Conventionally, the method of forming an image using such a photoconductive toner is to generally spread the toner onto a conductive support such as a metal plate, charge it and expose it to light, and further remove the toner if necessary. A method is adopted in which the image is removed and then fixed, or the image is transferred and then fixed.

A feature of such an image forming method using a photoconductive toner is that, unlike conventional electrophotographic methods, a toner dispersion process is required before exposure and development.

However, there are a lot of unresolved technologies in this spraying process, and in particular there is the issue of how to uniformly spray particles in the micron scale.
The magnetic brush method described in Publication No. 7 and the like have been proposed.

However, in order to carry out the magnetic brush method, the technique described in this publication uses a specially constructed coated substrate.

[Objective of the Invention] The object of the present invention is to make it possible to use a metal roll or the like without having to particularly consider the structure or material of the substrate to be coated (substrate electrode), and to achieve uniform dispersion with "■ ability and good quality." It is an object of the present invention to provide a recording device using photoconductive toner capable of obtaining an image.

(Structure of the Invention) As a result of extensive studies, the present invention has been developed in a recording device that performs recording using photoconductive toner, in which an endless base electrode and an endless counter electrode are used, and the photoconductive toner is applied to the base electrode. It has now been found that the objects of the present invention can be achieved by a recording device using photoconductive toner, which is characterized in that the dispersing section has a dispersing device capable of forming a magnetic brush.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a principle diagram showing an embodiment of the present invention.

In the figure, 1 is an endless base electrode that rotates in the direction of the arrow shown in the figure, and 2 is in the same direction as the base electrode 1 or in the opposite direction (
In this embodiment, it is an endless counter electrode that rotates in the opposite direction. Both the base electrode 1 and the counter electrode 2 are made of conductive rolls or belts, and are arranged side by side at a predetermined interval.

3 is a scatterer provided on the outer periphery of the base electrode l;
4 and a main body 5, the main body 5 is provided with a sleeve having a magnet 6 that rotates in the direction of the arrow. The gap between the magnets 6 can be adjusted by adjusting the fixing position of the fixing part 8 of the upper lid 4 and the main body 5, for example.

The photoconductive toner A (photoconductive toner A and carrier B in the case of a two-component system as shown in the figure) supplied to the scatterer 3 is as follows:
The grains are stirred in the spreader 3, a magnetic brush is formed on the magnet 6'2, and the height of the ears is regulated in the ear cutter 7 (transfer amount), resulting in a standing phenomenon toward the base electrode 1. In order to explain the principle, a part of the carrier B is shown as a model, and shows a state in which the carrier B stands on a magnet 6 due to magnetic force. For example, positively charged photoconductive toner A adheres around this carrier B due to frictional charging due to Coulomb force.

The photoconductive toner A near the tip of the spiked carrier flies onto the negatively charged base electrode I by application of a high voltage potential, and a uniform layer of photoconductive toner is formed. This is because the electric attractive force from the base electrode l side is stronger than the Coulomb force between the photoconductive toner A and the carrier B, and this causes the toner to fly.

Reference numeral 9 denotes a charging section provided as required, in which the photoconductive toner A uniformly spread by the above-mentioned scatterer 3 is charged, for example, ten times by corona discharge. Note that this charging is not necessarily required as long as the charging by the frictional charging or the like is sufficient and uniform.

Reference numeral 10 denotes an exposure section, which applies a light source to, for example, a positive original on a document table, and performs image exposure using the reflected light (or transmitted light);
It is preferable that the base electrode l is in an electrically conductive state during R light, and if it is in a conductive state, the light irradiated part (
The photoconductive toner (corresponding to the bright areas of the original) is excited by light, and its charged polarity is erased. Depending on the photoconductive toner used, the charge polarity may be reversed, and there is no problem in using such toner. Also, during exposure, it is necessary to apply a bias voltage of opposite polarity to the toner charge electrons to the base electrode l. In this case, the toner on the light irradiation part is inverted to the opposite polarity.

On the other hand, the toner in the light-blocking areas corresponding to the bright areas of the original document remains polarized. The toner with the polarity of 10 is ejected to the counter electrode 21, which is applied with a negative voltage.

The toner A that does not fly to the counter electrode 2 is the substrate 1'Ii pole 1.
]- and returned to the sprayer 3 to be reused.

+1 is a transfer part, for example, as shown in the figure, the counter electrode 2
A transfer material 12 (for example, paper) is movably provided opposite to the transfer material 12, and from the back side of the transfer material 12, a corona charger 13 is used to charge the toner with charges of opposite polarity to the toner charge electrons after exposure. A positive image can be obtained by transferring onto the transfer material 12. After the transfer, fixing is performed as necessary to obtain a good image. Further, in order to obtain a negative image on the transfer carrier, the photoconductive toner A remaining on the base electrode I may be transferred to the transfer material.

Note that the exposure process is not limited to the position in the above embodiment, and for example, as shown in Japanese Patent Application No. 59-20829 and the drawings by the inventors of the present invention, the exposure process is performed at the flying position part to the counter electrode 6, or from that part to the paper. The exposure process may be performed in a portion up to the transfer position to 7.

As the photoconductive toner A used in the method of the present invention, any known photoconductive toner can be used without any particular limitation.
No. 0357, No. 53-79542, No. 53-8241
Those described in No. 7 etc. can be used.

The carrier may be either a conductive carrier or an insulating carrier, and is not particularly limited, for example, iron powder or a core particle made of iron powder with a SiO iron oxide coating formed on its surface.

In the figure, reference numeral 14 indicates a nodding section provided as needed, reference numeral 15 indicates a toner conveying roller, reference numeral 16 indicates an agitator, and reference numeral 17 indicates Mylar.

In the following, we have mainly described the case in which a two-component photoconductive toner is used in the present invention.
It is clear that the present invention can be carried out using No. 30150 and No. 5 (see Publication No. 3-64350, etc.). The -component type photoconducting magnetic toner may be either a conductive magnetic toner or an insulating magnetic toner.
-1-, a charge of opposite polarity to that of the base electrode is induced in the toner, and this induced charge and base electrode 1-1]
The electric attraction (Coulomb force) of the charges overcomes the magnetic attraction, and the toner is scattered (deposited 41) on the base electrode 11:.

On the other hand, when insulating magnetic toner is used, the toner is charged by friction between the toners, and the toner charged to the opposite polarity to the charge of the base electrode 1 is attracted to the surface of the base electrode 1.
IR and dispersion is carried out. Note that when such a magnetic toner is used, the stirrer 18 required in the case of a two-component system is not required.

[Effects of the Invention] According to the present invention, since the magnetic brush is formed by the scatterer, the toner can be dispersed electrostatically, making it easy to uniformly distribute the toner, and by using an endless base electrode and a counter electrode, Covered! It is not necessary to particularly consider the structure or material of the O substrate ( )^ body electrode), metal rolls etc. can be used, continuous image formation is possible, and based on the above-mentioned uniform dispersion, Charging and exposure can be performed appropriately, and the counter electrode functions as an intermediate transfer section, and only the toner necessary for image formation is ultimately transferred to the transfer paper, eliminating image fogging. The effect is that it does not occur.

Note that the recording device of the present invention can also be applied to recording devices other than electrophotography.

[Brief explanation of drawings]

FIG. 1 is a principle diagram showing an embodiment of the present invention. In the figure, l is the base? ! 2 indicates a counter electrode, and 3 indicates a diffuser. Patent applicant: Konishi Roku Photo Gyokugyo Co., Ltd. Agent: Patent Attorney Uesaka F1 Nobuhiro (and 1 other person) ・R Keisuke Amendment: 1 (spontaneous) April 20, 1980 Mr. Kazuo Wakasugi, Commissioner of the Patent Office 1 1 List Indication of 1 Patent Application No. 60975 filed in 1982 2 Name of the invention Recording device using photoconductive toner 3 Relationship to the supplementary person case Applicant name (127) Roku Konishi Photo Industry Co., Ltd. 4 Agent
105 5. Date of notice of reasons for refusal (voluntary) 6. Number of inventions increased by amendment 7. Specification subject to amendment (full text) 8. Contents of supplementary IF (1) The full text of the specification will be amended as shown in the attached sheet. Akira Mll Shiran Title of the Invention Recording device 2 using photoconductive toner, Claims A recording device that performs recording using photoquadruplic toner,
1. A recording device using a photoconductive toner, characterized in that an endless base electrode and an endless counter electrode are used, and a photoconductive toner dispersion unit for the base electrode has a scatterer capable of forming five magnetic brushes. 3. Detailed Description of the Invention [Technical Field] The present invention relates to a recording device using photoconductive toner, and particularly to a recording device that can be preferably applied to an electrophotographic method. The present invention relates to a recording device using conductive toner. [Prior Art] In general, copying methods using electrophotographic technology include, for example, the Electrofunks method in which copies are made directly onto electrophotographic paper containing a zinc oxide-resin dispersion system, or the Kameko photoreceptor of Yaren et al. - There is a serography method in which a toner powder image obtained is transferred to paper to make a copy, but in any of these methods, the toner powder image is transferred to paper.
] Need two degrees? (Photocopying devices are complicated and expensive.In addition, in these methods, the copying system is composed of independent members, the photoreceptor and the toner powder.
When the performance of one of the components deteriorates, for example, the charging characteristics of the photoreceptor due to optical fatigue deteriorates, it becomes difficult to obtain high-quality copies, and maintenance becomes difficult as the photoreceptor and developer must always be maintained at the desired performance. There was a problem with not becoming one. -)j As a solution to these drawbacks, a photoconductive toner has been developed that has the functions of a perspiration photoreceptor and a developer at the same time. Conventionally, the method of forming an image using such a photo-4'il toner is generally to spray the toner onto a conductive support 1 such as a metal plate, charge it and expose it to light, and then, if necessary, A method is adopted in which the toner is removed and then fixed, or the toner is transferred and then fixed. The feature of the image forming method using such photoconductive toner is that it differs from conventional electrophotographic methods in that the toner #! First, it requires a cloth process. However, this lB! Cloth J: There are a lot of unresolved technologies in Chengdu, and in particular there is the problem of how to uniformly spread Tsutsu-f of medium micron size.For example, JP-A-58-
A magnetic brush method described in Japanese Patent No. 130357 has been proposed. However, in order to carry out the magnetic brush method, the technique described in this publication uses a specially constructed coated substrate. [Objective of the Invention] The object of the present invention is that there is no need to particularly consider the structure or material of the substrate to be coated (substrate electrode), metal rolls, etc. can be used, uniform dispersion is possible with one needle, and good An object of the present invention is to provide a recording device that uses light and dummy toner with which an image can be obtained. [Structure of the Invention] As a result of extensive studies, the present invention has been developed to provide a recording device that performs recording using optical 4ia toner, in which an endless pole (body electrode and an endless counter electrode are used, and the substrate ili pole 1 is used).
4. The photoconductive toner dispersion section opposite thereto has a magnetic brush type dispersion device. We have found that it is possible to achieve the target of 1!11 by using a recording device that uses optical and q-electroconductive toner. Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a principle diagram showing an embodiment of the present invention. In the figure, ■ is an endless base electrode that rotates in the direction of the arrow shown in the figure, and ? is in the same direction as the base electrode l, and is in the opposite direction (
In this embodiment, it is an endless counter electrode that rotates in the opposite direction. Both the base M1 pole 1 and the counter electrode 2 are made of conductive rolls or belts, and are arranged in parallel at a predetermined interval. Reference numeral 3 denotes a dispersion device provided on the outer periphery of the base electrode 1. The dispersion device 4 and the main body 5 form a container shape, and a sleeve having a magnet 6 rotating in the direction of the arrow is provided inside. The main body 5 is formed with an acute-angled spike section 7, and the gap between the spike section 7 and the magnet 6 is adjustable.
The gap can be adjusted by adjusting the fixing position of the fixing part 8. The photoconductive toner A (photoconductive toner A and carrier B in the case of a two-component system as shown in the figure) supplied to the sprinkler 3 is stirred in the sprinkler 3 and is applied to a magnetic brush by a magnet 6. The height of the ears (1l12 feeding amount) is regulated at the ear cutting part 7, and a flying phenomenon occurs toward the base electrode l. The figure shows a part of the structure schematically to explain the principle, and shows a state in which the carrier B stands on a magnet 6 due to magnetic force. Around this carrier B, for example, +
The charged photoconductive toner A adheres due to Coulomb force. The photoconductive toner A near the tip of the spiked carrier flies onto the positive electrode 1 of the substrate, which is negatively charged by applying a high voltage potential, and a uniform layer of photoconductive toner is formed. This is because the electric attractive force from the base electrode 1 side is stronger than the Coulomb force between the photoconductive toner A and the carrier B, which causes the toner to fly. Reference numeral 9 denotes a charging section which is provided as necessary, and the photoconductive toner A uniformly scattered by the scatterer 3 is charged, for example, by ten times by corona radiation. Note that this charging is not necessarily required as long as the charging by the frictional charging or the like is sufficient and uniform. IO is an exposure unit that applies a light source to, for example, a positive original on an original platen, and performs image exposure using the reflected light (or transmitted light). At the time of exposure, it is preferable that the base electrode l is electrically conductive, and if it is in a conductive state, the light emitted by the exposure (corresponding to the bright area of the wallet original) will be photo-excited,
The polarity of that band 11 is erased. Depending on the photoconductive toner used, the polarity of 41' may be reversed, and such toner may be used. Also, during exposure, a bias voltage with the opposite polarity to the toner l (mycelia) may be applied to the base electrode 1, in which case the light! ■＜(The toner in the wallet is reversed to the opposite polarity. −・The toner in the areas that do not allow light to pass through, which corresponds to the dark areas of the original, remains with the polarity of 10. It remains with the polarity of 10. The toner A is flown onto the counter electrode 2 which is applied with −.The toner A which is not flown onto the counter electrode 2 moves onto the base electrode 1 and is returned to the scatterer 3, where it is reused. is a transfer part, for example, as shown in the figure, the counter electrode 2
A transfer material 12 (for example, paper) is movably provided facing the transfer material 12, and a corona charger 13 is inserted from the back side of the transfer material 12.
After exposure, the toner is heavily charged with a polarity opposite to that of the charged mycelium, and transferred to a transfer material 12 to obtain a positive image. After the transfer, fixing is performed as necessary to obtain a good image. Further, in order to obtain a negative image on the transfer material, it is sufficient to transfer the photoconductive toner A remaining on the base electrode I to the transfer material. Note that the exposure process is not limited to the positions in the above embodiments, and for example, as shown in the specification and drawings of Japanese Patent Application No. 59-20829 filed by a single person, the exposure process may be carried out at the flying position toward the counter electrode 2,
Alternatively, the exposure step may be performed in a portion between that portion and the transfer position to the transfer material 12. + As the photoconductive toner A used in the invention method, any known photoconductive toner can be used without any particular limitation,
For example, Japanese Unexamined Patent Publication No. 56-30138, No. 58-130
No. 357, No. 53-79542, No. 53-82417
You can use those listed in the No. Also as a career! Either a conductive carrier or an insulating carrier may be used. For example, iron powder or a carrier having an iron powder as a core particle on which an iron coating is formed is used, but is not particularly limited. In the figure, reference numeral 14 indicates a cleaning section provided as needed, reference numeral 15 indicates a toner conveying roller, reference numeral 16 indicates an agitator, and reference numeral 17 indicates Mylar. Although we have mainly discussed the problems when using a two-component photoconductive toner in the present invention, one-component photoconductive toner that does not use a carrier (ω-type toner, e.g. 3
It is clear that the present invention can be carried out even by using the following publications: No. 0150 and No. 56-64350, etc.). The -component type photoconductive toner may be either a conductive magnetic toner or an insulating magnetic toner. When scattering conductive magnetic toner onto the base electrode 1 with a magnetic brush, a charge of opposite polarity to the charge on the base electrode is induced in the toner, and the difference between this induced charge and the charge on the base electrode 1 is induced in the toner. The It% attractive force (Coulomb force) overcomes the magnetic attractive force, and the toner is attracted onto the base electrode 1. First, when insulating magnetic toner is used, the toner is charged by friction between the toners, and the toner charged to the opposite polarity to the charge on the base electrode 1 is attracted and adhered to the surface of the base body 44il, and is dispersed. . Note that when such magnetic toner is used, the stirrer 1 required in the case of a two-component system is
6 is unnecessary. [Effects of the Invention] According to the present invention, since the magnetic brush is formed by the scatterer, the toner can be dispersed electrostatically, thereby making it easier to uniformly scatter the toner, and the base W! By using an electrode and a counter electrode, there is no need to particularly consider the structure or material of the substrate to be coated (substrate electrode), and a metal roll or the like can be used, and I! ! Not only is it possible to form continuous images, but also it is possible to properly perform charging and exposure based on the above-mentioned uniform dispersion 4j, and the counter electrode functions as an intermediate transfer section, Since only the toner necessary for image formation is finally transferred to the transfer paper, there is an effect that image fogging does not occur. Note that the recording device of the present invention can also be applied to recording bags other than electrophotography. 4. Brief Description of the Drawings FIG. 1 is a principle diagram showing one embodiment of the present invention. In the figure, l indicates a base electrode, 2 indicates a counter electrode, and 3 indicates a sprayer. Patent applicant: Konishiroku Photo Industry Co., Ltd. Agent: Nobuaki Sakaguchi, patent attorney

Claims (1)

[Claims] In a recording device that performs recording using photoconductive toner,
A recording device using photoconductive toner, characterized in that it uses an endless base electrode and an endless counter electrode, and has a scatterer capable of forming a magnetic brush in a photoconductive toner dispersion portion for the base electrode.