JP2002123144A - Image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact/inexpensive image forming device capable of forming a high-quality image by means of a simple/safe device for preventing an abnormal image from being formed by reducing the abrasion wear of an image carrier caused by removing a discharge product matter stuck to the image carrier. SOLUTION: This image forming device is composed of an electrifying means 2 for electrifying the image carrier 1, a latent image forming means 3 for forming a latent image on the image carrier 1 uniformly electrified by the electrifying means 2, a developing means 4 for forming a toner image by developing a latent image formed by the forming means 3, a transfer means 5 for transferring the toner image formed by the developing means 4 to a body to be transferred P, a cleaning means 6 for removing residual toner stuck to the image carrier 1 after transfer by the transfer means 5 and cleaning the carrier 1, and a discharge product matter sucking and removing means 7 for sucking and removing the discharge product matter produced and stuck to the image carrier 1 while press-contacting with the image carrier 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus, and more particularly, to an electrophotographic copying machine, a facsimile machine, and the like, which form an image by removing a discharge-generating substance generated by a discharge on an image carrier. The present invention relates to an image forming apparatus such as a printer or a multifunction peripheral thereof.

[0002]

2. Description of the Related Art In a conventional image forming apparatus such as an electrophotographic copying machine, a facsimile machine, a printer, or a multifunction machine thereof, a corona discharger is provided with a predetermined rotation of a drum-shaped photosensitive member of an image carrier. A voltage is applied, corona discharge is performed, and the drum-shaped photoconductor of the image carrier is uniformly charged. At this time, NOX is generated by the corona discharge, and the NOX is combined with substances in the air and other members, so that a discharge-producing substance of a nitric acid compound is generated and adheres to the drum-shaped photosensitive member surface of the image carrier. As described above, the discharge-generating substance of the nitric acid compound generated and adhered to the drum-shaped photoreceptor surface of the image carrier is a hygroscopic substance and has a high electric resistance at low humidity and absorbs moisture in the air at high humidity. Resistance decreases. If a nitric acid compound is present over the image area and the background area, a high charge of the background area flows toward the image area, and the potential of the image area increases and the image area is not developed. An abnormal image occurred. The corona discharge generating substance generated and adhered to the drum-shaped photoreceptor surface of the image carrier is mixed with an abrasive in the developer, and the drum-shaped photoreceptor surface of the image carrier is polished and removed. Heating and drying were performed due to abnormal images of blurred images caused by moisture absorption of the corona discharge generating material.However, the drum-shaped photoreceptor surface of the image carrier was abraded little by little, resulting in poor image quality. do it,
The service life was short, and various adverse effects due to heating also occurred. Therefore, after completion of the image forming operation, all the corona dischargers are turned off, the photoreceptor is rotated backward, and simultaneously with this rotation, the water application roller is pressed against the surface of the photoreceptor, and the surface of the photoreceptor is covered with water. Dissolve corona discharge product in water,
It is also known that a water removing roller is pressed against the surface of the photoreceptor before the water is dried, and the water is wiped off to remove the corona discharge-producing substance attached to the surface of the photoreceptor (Japanese Patent Application Laid-open No. Sho 60-49352). Reference).

However, these require extra space around the photoreceptor where a water application roller for applying water to the surface of the photoreceptor and a water removal roller for removing water are required, resulting in high costs.
In order to ensure the safety of the human body and the apparatus, complicated operations such as turning off all corona dischargers after the image forming operation is completed and separating the developing devices arranged close to the photoreceptor are performed. Will be In recent years, in order to reuse resources, the life of parts and units of the image forming apparatus has been required to be extended, and a reduction in the amount of wear of the photoconductor has also been demanded. Therefore, in these conventional image forming apparatuses, there is no abnormal image formation such as image deletion due to abrasion of the photoreceptor in order to scrape or remove corona discharge generating substances and the like adhering to the photoreceptor. However, wear deteriorates image quality and shortens the life of the photoreceptor. The problem that it became.

[0004]

An object of the present invention is to solve such a problem. In other words, a simple and safe device that removes discharge-producing substances attached to the image carrier and reduces the amount of wear on the image carrier to prevent the occurrence of abnormal images forms a small, low-cost, high-quality image. It is an object of the present invention to provide an image forming apparatus which performs the following.

[0005]

In order to achieve the above object, according to the present invention, there is provided an image forming apparatus for forming an image by removing a discharge-generating substance generated by a discharge on an image carrier. An image carrier that rotates while supporting the toner image to be formed, a charging unit that charges the image carrier, and a latent image that forms a latent image on the image carrier that is uniformly charged by the charging unit. An image forming unit, a developing unit that forms a latent image formed by the latent image forming unit into a toner image, a transfer unit that transfers the toner image formed by the developing unit to a transfer object, and the transfer unit Cleaning means for removing and cleaning residual toner adhering to the image carrier after transfer; and adsorbing a discharge generating substance generated and adhered to the image carrier by contacting and pressing the image carrier. Discharge to remove The most important feature that is an image forming apparatus comprising a quality suction removal means. According to a second aspect of the present invention, in the image forming apparatus according to the first aspect, the charging unit is a corona discharger. According to a third aspect of the present invention, in the image forming apparatus according to the first aspect, the charging unit is a charging roller.
According to a fourth aspect of the present invention, in the image forming apparatus according to the first, second or third aspect, the cleaning means is a cleaning blade. According to a fifth aspect of the present invention, in the image forming apparatus according to the fourth aspect, a linear pressure of the cleaning blade against the image carrier is 10 g.
/ Cm or more. According to a sixth aspect of the present invention, in the image forming apparatus according to the first, second or third aspect, the cleaning means includes a cleaning brush. According to a seventh aspect of the present invention, in the image forming apparatus according to the sixth aspect, a pressing force of the cleaning brush against the image carrier is 2 g / cm or more. According to an eighth aspect of the present invention, in the image forming apparatus according to the first, second or third aspect, the cleaning unit includes a cleaning magnetic brush. The invention according to claim 9 is based on claims 1, 2, 3, 4, 5,
9. The image forming apparatus according to 6, 7, or 8, wherein the discharge-producing-substance adsorbing and removing unit includes an adsorbing member that adsorbs the discharge-producing substance. According to a tenth aspect of the present invention, in the image forming apparatus according to the ninth aspect, the adsorbing member includes a surface layer and a lower layer. An eleventh aspect of the present invention is the image forming apparatus according to the tenth aspect, wherein the surface layer is supplied with the adsorbent from a lower layer.

According to a twelfth aspect of the present invention, in the image forming apparatus according to the eleventh aspect, the adsorbent is a fluid. According to a thirteenth aspect of the present invention, in the image forming apparatus according to the eleventh aspect, the adsorbent is a mist. According to a fourteenth aspect of the present invention, in the image forming apparatus according to the eleventh aspect, the adsorbent is a gas. According to a fifteenth aspect of the present invention, there is provided a method according to the eleventh or the first aspect.
15. The image forming apparatus according to 2, 13, or 14, wherein the adsorbent is water. According to a sixteenth aspect of the present invention, in the image forming apparatus according to the tenth aspect, the surface layer is made of a water-absorbing material. The present invention of claim 17 is based on claim 1
6. In the image forming apparatus described in 6, the water-absorbing material of the surface layer is polyacrylic acid, polymaleic acid, polymethacrylic acid, polyacrylamide or sodium polyacrylate, and each derivative or a copolymer polymer thereof. It is characterized by the following. The present invention of claim 18 is the invention of claim 1
6. In the image forming apparatus described in 6, the surface water-absorbing material is a polyalkyl oxide such as polyethylene oxide, polyvinyl pyrrolidone, polyvinyl alcohol, polyvinyl butyral, polyacrylamide, polypropylene glycol, glue, gelatin, casein, albumin, alginic acid, and alginic acid. Soda, methylcellulose, carboxymethylcellulose, hydroxyethylcellulose, polyvinyl ether, polyvinylmethylcellulose, polyethylene glycol, glucose, xylose, sucrose, maltose, arabinose, α-cyclodextrin or starch, and respective copolymers,
It is a graft polymer or a crosslinked product. The present invention of claim 19 provides the present invention of claim 10, 11, 12, 13,
14. The image forming apparatus according to 14, 15, 16, 17 or 18, wherein the lower layer is an elastic body.

[0007] The present invention of claim 20 is based on claims 10 and 1
1, 12, 13, 14, 15, 16, 17, 18 or 1
9. The image forming apparatus according to item 9, wherein the lower layer is a water-containing material. The present invention according to claim 21 is based on claims 10, 11, 12, 13, 14, 15, 16, 17,
21. The image forming apparatus according to 18, 19 or 20, wherein the lower layer is a foam. According to a twenty-second aspect of the present invention, in the image forming apparatus according to the twenty-first aspect, the lower layer foam is urethane rubber, silicon rubber, ethylene propylene rubber, butadiene rubber, styrene rubber, chloroprene rubber, butylene rubber, or an elastomer. It is characterized by. Claim 23 of the present invention provides claim 10,
11, 12, 13, 14, 15, 16, 17, 18, 1
21. The image forming apparatus according to 9 or 20, wherein the lower layer is a porous body. According to a twenty-fourth aspect of the present invention, in the image forming apparatus according to the twenty-third aspect, the lower porous body is sponge or urethane foam. The present invention according to claim 25 is based on claims 1, 2, 3,
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 1
4, 15, 16, 17, 18, 19, 20, 21, 2
25. The image forming apparatus according to 2, 23, or 24, wherein the discharge-producing-substance-adsorbing / removing unit has a roller shape. The invention according to claim 26 is based on claims 1, 2, 3,
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 1
4, 15, 16, 17, 18, 19, 20, 21, 2
In the image forming apparatus described in 2, 23, 24, or 25, the discharge-producing-substance adsorbing and removing unit is rotatable and rotates. The invention according to claim 27 is the invention according to claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 1
2, 13, 14, 15, 16, 17, 18, 19, 2,
The image forming apparatus according to any one of 0, 21, 22, 23, 24, 25, and 26, wherein the discharge-producing substance-adsorbing and removing unit is disposed upstream of the latent image forming unit. The present invention according to claim 28 is based on claims 1, 2, 3, 4, 5, 6,
7, 8, 9, 10, 11, 12, 13, 14, 15, 1,
6, 17, 18, 19, 20, 21, 22, 23, 2,
In the image forming apparatus described in 4, 25, 26, or 27, the discharge-producing-substance adsorbing and removing unit includes a contact-pressing-force adjusting unit that adjusts a contact-pressing force for contact-pressing on the image carrier. The present invention of claim 29 is the invention according to claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 1
2, 13, 14, 15, 16, 17, 18, 19, 2,
0, 21, 22, 23, 24, 25, 26, 27 or 2
9. The image forming apparatus according to 8, wherein the discharge-product adsorbing and removing unit includes an adsorbent replenishing unit that replenishes the adsorbent.

[0008]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram of a main part of an image forming apparatus according to an embodiment of the present invention. In the figure, an image forming apparatus 0 for forming an image by removing a discharge-generating substance generated by electric discharge on an image carrier carries out a series of image forming processes in a place where an N / P negative / positive potential is low. An example will be described. A photosensitive member 1 carrying a toner image to be formed and rotating in the direction of arrow A shown in the figure, and a corona discharger 2a of charging means 2 for uniformly charging the photosensitive member 1
A latent image forming means 3 for exposing the photosensitive member 1 uniformly charged by the corona discharger 2a with a laser beam to form a latent image;
Developing roller 4a of developing means 4 for forming a latent image formed by latent image forming means 3 into a toner image; transfer roller 5 for transferring the toner image formed by developing roller 4a to transfer paper (P)
A cleaning blade 6a and a toner discharge screw 6d of a cleaning means 6 for removing and cleaning residual toner adhered to the photoreceptor 1 after transfer by the transfer roller 5; 1. A discharge-producing substance adsorbing and removing means 7 for adsorbing and removing the discharge-producing substance generated and adhered to the roller 1 comprises a rotatable supporting member 7a rotatably supported in a roller shape. When a print button of an operation unit (not shown) is pressed, a predetermined voltage or current is sequentially applied to the static elimination lamp 8, the corona discharger 2a, and the developing roller 4a at a predetermined timing, and almost simultaneously with the photosensitive drum. 1, the transfer roller 5, the developing roller 4a, the left screw 4b, the right screw 4c,
The toner discharge screw 6d and the suction member 7a start rotating in a predetermined direction.

The photoreceptor 1 is neutralized by the neutralizing lamp 8, uniformly charged to −900 V by the corona discharger 2 a disposed at a distance, and exposed to laser light from the latent image forming means 3. Thus, a latent image is formed at a black solid potential of -150V. The latent image formed by the laser beam of the latent image forming means 3 is developed by a magnetic brush formed by the developing roller 4a with a developing bias of -600V of the developing means 4 to form a toner image. Then, the toner image is fed between the photoreceptor 1 and the transfer roller 5 from the paper feeding mechanism 9, and the upper registration roller 10 a
+10 μA is applied to the toner image on the transfer paper (P) supplied in synchronization with the tip of the toner image formed on the photoconductor 1 by the lower registration roller 10b and transferred. The transfer paper (P) is separated from the photoreceptor 1 by the separation claw 11, is fixed by the fixing device 12, is discharged to the discharge tray 14 as a copy image via the discharge roller 13, and is stored.

On the other hand, the residual toner transferred by the transfer roller 5 and remaining on and adhered to the photoreceptor 1 is transferred to the cleaning means 6 by the rotation of the photoreceptor 1 and is moved by the cleaning blade 6a of a simple device. It is removed from the photoconductor 1. In order to reuse resources in recent years, the image forming apparatus 0
The life of the photoconductor 1 is reduced by reducing the wear of the photoconductor 1 in order to extend the life of the photoconductor 1. When the photoreceptor 1 is worn, the charging potential is lowered, and an abnormal image such as a so-called background stain is generated on the formed image. Although slightly different depending on the units and processes arranged around the photoreceptor 1, roughly 30% of the film thickness of the photoreceptor 1 is shaved, so-called background stain or the like is generated on a formed image. When the film thickness of the photoconductor 1 is 30 μm, the limit of the amount of wear is 10 μm. As a method of reducing the amount of wear of the photoconductor 1, the photoconductor 1 is not scraped by the cleaning means 6 or the photoconductor 1 is hardened. As a method of not shaving the photoreceptor 1 by the cleaning means 6 or reducing the shaving amount, the cleaning means of the image forming apparatus 200 or the image forming apparatus 300 without shaving the photoreceptor 1 by a small amount or by a smaller amount. 6 and the cleaning brush 6b (see FIGS. 10 and 1).
1), and a cleaning magnetic brush 6c (see FIGS. 12 and 13) similar to the cleaning means 6 of the image forming apparatus 400 or the image forming apparatus 500 without or very little shaving of the photoconductor 1 by the cleaning means. reference)
The image forming apparatus 0 or the image forming apparatus 10 without shaving the photoreceptor 1 by the cleaning means or with a small shaving amount.
The cleaning blade 6a (see FIGS. 1 and 9) having a low linear pressure is used like the cleaning means 6 of FIG. The image forming apparatus 0 using the corona discharger 2a,
In the case of the image forming apparatus 200 (see FIG. 10) and the image forming apparatus 400 (see FIG. 12), the image forming apparatus is disposed immediately after the corona discharger 2a and upstream of the position of the latent image forming means 3. By means of the discharge product substance adsorption and removal means 7,
When the rotating photoreceptor 1 is stopped after the image formation is completed, a large amount of the discharge generating material generated and attached to the surface of the photoreceptor 1 immediately below the corona discharger 2a is adsorbed and removed immediately after the discharge charging. As a result, there is no movement of the electric charge during the formation of the latent image, and the occurrence of abnormal image formation such as a blank image flow that occurs in the longitudinal direction of the photoreceptor 1 during the next image formation at high humidity is prevented. I have.

FIG. 2 is a cross-sectional view showing the structure of the adsorbing member. The adsorbing member 7a that rotates in the form of a roller of the electric discharge substance adsorbing and removing means 7 has a cylindrical surface layer 7a ₁ made of a highly water-absorbing material. When made lower 7a ₂ Metropolitan is a foam or a porous body of water material in the elastic body, the surface layer 7a ₁
Moisture is adsorbent 7b from the lower layer 7a ₂ is supplied as a gas of fluid or mist or water vapor. The lower layer 7
a ₂ is, since it is water-absorptive material by foam or porous material of the elastic body, the surface layer 7a ₁ of inexpensive water of the adsorbent 7b
, And the discharge generating substance is efficiently adsorbed in a large amount by forming a nip portion between the image carrier and the adsorbing member. Since the adsorbing member 7a is rotatable in the shape of a roller, it has a simple structure, is low in cost, has a large surface area, and can hold a large amount of discharge generating material, and has a long life. The suction member 7a is rotatably supported by a hollow core metal shaft 7a _3, by rotating the adjusting screw 7c ₂ a hollow core metal shaft 7a ₃ supported by the elastic member 7c ₁ of the contact pressing force adjusting means 7c Thus, the contact pressing force for moving in the direction of arrow D shown in the drawing to contact and press the photosensitive member 1 can be adjusted. When the discharge-generating substance of the nitric acid compound generated and adhered to the surface of the photoreceptor 1 by the corona discharge comes to the position of the discharge-product adsorbing / removing means 7, the adsorbing member 7a is rotated while being contacted and pressed.
In, and transferred to the surface layer 7a ₁ from the surface of the photosensitive member 1 made of a high water absorbing member is held in the surface layer 7a in ₁ made of a superabsorbent material.

[0012] the discharge generating substance adsorption removal unit 7, the lower layer 7a ₂ on the outside of the hollow core metal shaft 7a ₃ is there, is constituted by the surface layer 7a ₁ to the outside in a state of being substantially sealed. The surface layer 7a _1, said adsorbent 7 from the lower layer 7a ₂
The water, which is b, is supplied to form a gel, which is sticky and keeps an appropriate amount of water. Adsorbent supply means 7d
The proper amount of a plurality of supply ports 7d ₁ of the adsorbent 7b in the lower layer 7a ₂ through the hollow core metal shaft 7a ₃ is adapted to be replenished. As for the water content of the adsorbent 7b, mist or water vapor is safer than a fluid having a large amount of adsorption of the discharge-producing substance, because it is less likely to leak and flow down to cause adverse effects on other devices. When the discharge generating substance attached to the surface of the photoreceptor 1 comes to the nip formed by the discharge generating substance adsorbing and removing means 7 and the photoreceptor 1, water is supplied at the entrance side, and the discharge generating substance is ionized, and The agent 7b dissolves in the fluid of water, the mist, or the gas of water vapor, or the adhesion to the photoreceptor 1 is weakened. If the discharge generating material took dissolved into water fluid or mist or water vapor in the gas is the adsorbent 7b is absorbed in the surface layer 7a ₁ comprising a high water absorbing member at the nip from the superabsorbent member become held inside of the surface layer 7a _1. In addition, before the discharge-producing substance adheres to the surface of the photoreceptor 1 and becomes ionized, before the ionization, the water absorption from the surface of the photoreceptor ₁ is increased due to the adhesive force of the surface layer 7a1 made of a highly water-absorbing member at the nip portion. transferred to the surface layer 7a ₁ consisting sexual member, it is gradually held in the surface layer 7a ₁ internal consisting of penetration superabsorbent member into the gas fluid or mist or water vapor in the water which is the adsorbent 7b. Once discharge generation material retained as ions within the surface layer 7a ₁ comprising a high water absorbing member, the suction member 7
When a rotates once, the exudate is exuded again with the moisture fluid or the mist or the vapor gas as the adsorbent 7b. Since it can be dissolved, it is composed of the superabsorbent material together with the discharge product of the next nitric acid compound, even if the adsorbent 7b comes out together with the water fluid or the mist or the vapor gas as the adsorbent 7b again. incorporated into the interior of the surface layer 7a _1. Therefore, since the discharge product of the nitric acid compound is removed and does not exist on the surface of the photoreceptor 1 that has passed through the adsorption member 7a, there is no occurrence of an abnormal image such as white image deletion even at high humidity. The superabsorbent member of the surface layer 7a _1, polyalkyl oxides such as polyethylene oxide, polyvinyl pyrrolidone, polyvinyl alcohol, polyvinyl butyral, polyacrylamide, polypropylene glycol, glue, gelatin, casein, albumin,
Alginic acid, sodium alginate, methylcellulose, carboxymethylcellulose, hydroxyethylcellulose, polyvinyl ether, polyvinylmethylcellulose, polyethylene glycol, glucose, xylose, sucrose, maltose, arabinose, α-cyclodextrin, copolymers such as starch, graft polymers, crosslinked products Are used. Still superabsorbent member of the surface layer 7a _1, polyacrylic acid, polymaleic acid, polymethacrylic acid, polyacrylamide, polyacrylic acid soda, also be used each derivatives and their copolymers polymers . Examples of water-containing elastomer of the lower layer 7a _2, urethane rubber, silicone rubber, ethylene propylene rubber, butadiene rubber, styrene rubber, chloroprene rubber, butylene rubber, foam such as an elastomer or sponge, porous, such as urethane foam The body is used.

FIG. 3 shows the linear pressure (g / g) of the cleaning blade.
FIG. 7 is a diagram illustrating characteristics of the image bearing member and the wear amount (μm) of the image bearing member.
c, the characteristics of the linear pressure (g / cm) of the cleaning blade 6a and the abrasion amount (μm) of the photosensitive member 1 when 100k continuous paper is fed by A4 horizontal feed (see FIGS. 1 and 9). As shown in the figure, for example, when the cleaning blade 6a is used as a method of the cleaning means 6, if the linear pressure (g / cm) of the cleaning blade 6a is reduced, the abrasion amount of the photoconductor 1 is reduced. However, the cleaning blade 6a removes the residual toner adhered to the photoreceptor 1 and remaining after the toner image formed on the photoreceptor 1 is transferred to the transfer paper (P) by the transfer roller of the transfer unit 5. There is another function to do. As shown by the dashed line in the figure, the linear pressure of the cleaning blade 6a is about 10
(G / cm) or less, the residual toner passes through the cleaning blade 6a, so-called poor cleaning occurs. Therefore, the linear pressure of the cleaning blade 6a is used at 10 (g / cm) or more. Also, photoconductor 1
If the photoreceptor 1b, which is harder than the normally hard photoreceptor 1a, is used, the amount of wear of the photoreceptor 1 is similarly reduced. Therefore, the harder the photoreceptor 1 is, the better it is. The hardest photoreceptor 1b is an amorphous silicon photoreceptor.

In FIG. 4, when the cleaning brush 6b is used as the cleaning means 6,
The characteristics of the pressing force (g / cm) of the cleaning brush 6b and the wear amount (μm) of the photoconductor 1 are shown (FIGS. 10 and 11).
See). The cleaning brush 6b is also basically the same as the cleaning blade 6a, and the lower the pressing force, the smaller the wear amount (μm) of the photoconductor 1 becomes. Since cleaning failure occurs, the limit pressing force is 2 (g / cm), and it is used at a pressure higher than 2 (g / cm). In FIG. 5, the photosensitive member 1 has a diameter of φ30 and a linear velocity of 114.
The relationship between the amount of wear (μm) of the photoreceptor 1 and the formation of an abnormal image such as a blank image flow when the paper is continuously fed at 100 mm / sec. The cleaning blade 6a and the cleaning brush 6b are both abraded little by little by one rotation of the photoreceptor 1, and are worn.
This is the amount of abrasion and abrasion of the photoreceptor 1 seen at the time of 100k sheets. In the figure, the lower side of the alternate long and short dash line is an area where abnormal image formation of image deletion occurs, and the upper side is an area where no abnormal image formation of image deletion occurs.
FIG. 6 shows a schematic diagram of a normal charging potential and an image portion potential on the photoreceptor 1 where abnormal image formation such as a so-called blank image deletion does not occur. In FIG. 7, if a discharge product of the nitric acid compound on the photoreceptor 1 exists over the image area and the background area, a high charge of the background area flows toward the image area, and the potential of the image area increases. Abnormal image formation such as a state of a so-called blank image flow that is not developed is caused. In FIG. 8, the fact that the photoreceptor 1 is scraped by the cleaning blade 6a means that the substance adhering to the photoreceptor 1 does not naturally remain on the surface,
In the case of the cleaning blade 6a, the cleaning blade 6a vibrates in the circumferential direction of the photoconductor 1, as shown in the drawing.
A so-called stick-slip occurs, and when the cleaning blade 6a has escaped in the direction of the arrow B shown in the figure, the photoreceptor 1 is not scraped. Is going. Therefore, the photoreceptor 1 has a portion that is cut in the circumferential direction and a portion that is not cut at random. In the longitudinal direction of the photoreceptor 1, the contact pressure of the cleaning blade 6a is not uniform but has a high portion and a low portion, and shaving unevenness occurs in combination with a so-called stick-slip. If such a state continues for a long time, the discharge products are continuously present on the surface of the photoconductor 1 in one circumferential direction. Then, a latent image is formed so as to straddle the image portion and the background portion on the photoreceptor 1, and in a high-humidity environment, as shown in FIG. An abnormal image formation such as a flow, that is, a so-called blank image flow occurs. The cleaning blade 6a has been described, but the cleaning brush 6b (see FIGS. 10 and 11)
The same applies to the case of (1), and the description is the same, so the following description is omitted. However, cleaning magnetic brush 6b
In the case of (see FIGS. 12 and 13), the cleaning blade 6a and the cleaning brush 6b (see FIGS. 10 and 1)
1), the amount of abrasion and wear is extremely small.

Referring to FIG. 9, the image forming apparatus 100
Is a photoconductor 1 that carries a toner image to be formed and rotates in the direction of arrow A shown in the figure, a charging roller 2b that uniformly charges the photoconductor 1, and a photoconductor that is uniformly charged by the charging roller 2b. A latent image forming unit 3 that forms a latent image by exposing the latent image to a latent image formed by the latent image forming unit 3; a developing roller 4a that forms a latent image formed by the latent image forming unit 3 into a toner image;
a transfer roller 5 for transferring the toner image formed in step a. onto the transfer paper (P), and the photosensitive member 1 transferred by the transfer roller 5
A cleaning blade 6a for removing residual toner adhering to the surface and cleaning the same;
d, which is rotatably supported in the form of a roller of the discharge-product adsorbing and removing means 7 for adsorbing and removing the discharge-product generated and adhered to the photoconductor 1 by being pressed against the photoconductor 1. And the rotating suction member 7a. When a print button of an operation unit (not shown) is pressed, the charge elimination lamp 8, the charging roller 2b, and the developing roller 4a shown in FIG.
A predetermined voltage or current is sequentially applied at a predetermined timing to each of the photoconductors 1, the transfer roller 5, the developing roller 4a, the left screw 4b, the right screw 4c, the toner discharge screw 6d, and the suction member 7a almost simultaneously. Starts to rotate in a predetermined direction. The photoreceptor 1 is neutralized by the neutralizing lamp 8, uniformly charged to −900 V by the charging roller 2 b disposed in contact with the photosensitive member 1, and is exposed to the laser beam of the latent image forming unit 3 to be black solid. Potential is -15
A latent image is formed at 0V. The latent image formed by the laser beam of the latent image forming means 3 is developed by a magnetic brush formed by the developing roller 4a with a developing bias of -600V of the developing means 4 to form a toner image. And
The toner image is transferred between the photoconductor 1 and the transfer roller 5.
The paper is fed from the paper feeding mechanism 9 and the registration rollers 10
The toner image on the transfer paper (P) supplied in synchronization with the leading end of the toner image formed on the photoreceptor 1 by the upper registration roller 10a and the lower registration roller 10b is +1.
0 μA is applied and transferred. The transfer paper (P) is separated from the photoreceptor 1 by the separation claw 11 and the fixing device 12
And is discharged to the discharge tray 14 as a copy image via the discharge roller 13 and stored.

On the other hand, the residual toner transferred by the transfer roller 5 and remaining on and adhered to the photosensitive member 1 is transferred to the cleaning means 6 by the rotation of the photosensitive member 1, and is transferred onto the photosensitive member 1 by the cleaning blade 6a. Removed from. Also in the case of the charging roller 2b of the image forming apparatus 100, N
OX is similarly generated only when the amount of generation is smaller than that of the corona discharger 2a (not shown). The discharge product of the nitric acid compound is a hygroscopic substance and has a high resistance at low humidity, and absorbs moisture in the air at high humidity to lower the resistance. The charging roller 2b
Immediately after the image formation is completed and the rotating photosensitive member 1 is stopped by the discharge-product-absorbing / absorbing means 7 disposed on the upstream side of the position of the latent-image forming means 3, immediately below the charging roller 2b A large amount of a nitrate compound discharge-producing substance generated and adhered to the surface of the photosensitive member 1 is adsorbed and removed immediately after the discharge charging, so that the photosensitive member 1 can be formed even during the next image formation at high humidity.
The occurrence of an abnormal image such as a blank image flow that occurs in the longitudinal direction of the image is prevented.

Referring to FIG. 10, the image forming apparatus 200
Is a photoreceptor 1 that carries a toner image to be formed and rotates in the direction of arrow A, the corona discharger 2a that uniformly charges the photoreceptor 1, and the photoreceptor 2a that is uniformly charged by the corona discharger 2a. Latent image forming means 3 for forming a latent image by exposing the photoreceptor 1 with a laser beam, a developing roller 4a for forming the latent image formed by the latent image forming means 3 into a toner image, and a developing roller A transfer roller 5 for transferring the toner image formed in 4a onto transfer paper (P); a cleaning brush 6b for removing residual toner adhered to the photoreceptor 1 after transfer by the transfer roller 5 for cleaning; The toner discharge screw 6d is rotatably supported in the form of a roller of the discharge generation material adsorption and removal means 7 for contacting and pressing the photoconductor 1 to adsorb and remove the discharge generation material generated and adhered to the photoconductor 1. Being taken around That consisting of the suction member 7a. When a print button of an operation unit (not shown) is pressed, a predetermined voltage or current is sequentially applied to the static elimination lamp 8, the corona discharger 2a, and the developing roller 4a at a predetermined timing, and almost simultaneously therewith. Photoconductor 1, transfer roller 5, developing roller 4a, left screw 4
b, the right screw 4c, the cleaning brush 6b,
The toner discharge screw 6d and the suction member 7a start rotating in a predetermined direction. The photoreceptor 1 is neutralized by the neutralizing lamp 8, uniformly charged to −900 V by the corona discharger 2 a which is spaced apart from the photosensitive body 1, and
And a latent image is formed at a black solid potential of -150V. The latent image formed by the laser beam of the latent image forming means 3 is applied to the developing bias -60 of the developing means 4.
The toner image is formed by developing with the magnetic brush formed by the developing roller 4a of 0V. Then, the toner image is fed between the photoconductor 1 and the transfer roller 5 from the paper feeding mechanism 9, and is transferred onto the photoconductor 1 by the upper registration roller 10 a and the lower registration roller 10 b of the registration roller 10. The toner image is transferred by applying +10 μA onto the transfer paper (P) supplied in synchronization with the leading end of the toner image formed on the sheet. The transfer paper (P) is separated from the photoreceptor 1 by the separation claw 11, fixed by the fixing device 12, discharged to the discharge tray 14 as a copy image via the discharge roller 13, and stored. .

On the other hand, the residual toner transferred by the transfer roller 5 and remaining on the photoreceptor 1 is transferred to the cleaning means 6 by the rotation of the photoreceptor 1, and is transferred onto the photoreceptor 1 by the cleaning brush 6b. Removed from. NOX from the corona discharger 2a or the like of the image forming apparatus 200
Is generated, and the discharge-generating substance of the nitric acid compound generated and adhered to the surface of the photoreceptor 1 is a hygroscopic substance, and has a high resistance at low humidity, and absorbs moisture in the air at high humidity to decrease the resistance.
Immediately after the corona discharger 2a, the discharge-generating substance adsorption / removal means 7 arranged on the upstream side of the position of the latent image forming means 3 stops image rotation and stops the rotating photoreceptor 1. A large amount of a nitrate compound discharge-generating substance generated and adhered to the surface of the photoreceptor 1 immediately below the corona discharger 2a is adsorbed and removed immediately after the discharge charging, so that the photoreceptor can be used even during the next image formation in high humidity. 1 prevents the occurrence of an abnormal image such as a blank image flow occurring in the longitudinal direction.

In FIG. 11, the image forming apparatus 300
Is a photosensitive member 1 that carries a toner image to be formed and rotates in the direction of arrow A shown in the figure, the charging roller 2b that uniformly charges the photosensitive member 1, and a photosensitive member that is uniformly charged by the charging roller 2b. The latent image forming unit 3 that forms a latent image by exposing the body 1 with laser light, a developing roller 4a that forms a latent image formed by the latent image forming unit 3 into a toner image, and a developing roller 4a The transfer roller 5 for transferring the formed toner image to the transfer paper (P), the cleaning brush 6b for removing residual toner adhered on the photoreceptor 1 after the transfer by the transfer roller 5 for cleaning, and the toner discharge A screw 6d is rotatably supported by the roller shape of the discharge-generating substance adsorption and removal means 7 for contacting and pressing the photosensitive body 1 to adsorb and remove the discharge-generating substance generated and adhered to the photosensitive body 1. Go around Serial consisting of the adsorption member 7a. When a print button of an operation unit (not shown) is pressed, the discharge lamp 8, the charging roller 2b, the developing roller 4
A predetermined voltage or current is sequentially applied to the photosensitive drum 1, at a predetermined timing, and at about the same time, the photosensitive member 1, the transfer roller 5, the developing roller 4a, the left screw 4b, the right screw 4c, the cleaning brush 6b, and the toner discharge The screw 6d and the suction member 7a start rotating in a predetermined direction. The photoreceptor 1 is neutralized by the neutralizing lamp 8, uniformly charged to −900 V by the charging roller 2 b disposed in contact with the photosensitive member 1, and is exposed to the laser beam of the latent image forming unit 3 to be black solid. A latent image is formed at a potential of -150V. The latent image formed by the laser beam of the latent image forming means 3 is developed by a magnetic brush formed by the developing roller 4a with a developing bias of -600V of the developing means 4 to form a toner image. Then, the toner image is fed between the photoconductor 1 and the transfer roller 5 from the paper feeding mechanism 9, and is transferred onto the photoconductor 1 by the upper registration roller 10 a and the lower registration roller 10 b of the registration roller 10. The toner image is transferred by applying +10 μA onto the transfer paper (P) supplied in synchronization with the leading end of the toner image formed on the sheet. The transfer paper (P) is separated from the photosensitive member 1 by the separation claw 11.
The sheet is separated from the top, fixed by the fixing device 12, passed through the sheet discharging roller 13 as a copy image, and
4 and stored.

On the other hand, the residual toner transferred by the transfer roller 5 and remaining on and adhered to the photosensitive member 1 is transferred to the cleaning means 6 by the rotation of the photosensitive member 1 and is transferred onto the photosensitive member 1 by the cleaning brush 6b. Removed from. NOx is generated from the charging roller 2b or the like of the image forming apparatus 300, and the discharge-generating substance of the nitrate compound generated and adhered to the surface of the photoreceptor 1 is a hygroscopic substance and has a high resistance at low humidity and a high humidity. Sometimes it absorbs moisture in the air and lowers its resistance.
Immediately after the charging roller 2b, the discharge-generating substance adsorption removing means 7 disposed upstream of the position of the latent image forming means 3
When the rotating photoreceptor 1 is stopped after the image formation is completed, a large amount of the discharge-producing substance of the nitric acid compound generated and adhered to the surface of the photoreceptor 1 immediately below the charging roller 2b is discharged immediately after the discharge charging. To prevent the occurrence of an abnormal image such as a blank image flow that occurs in the longitudinal direction of the photoconductor 1 even when the next image is formed in a high humidity condition.

Referring to FIG. 12, the image forming apparatus 400
Is a photoreceptor 1 that carries a toner image to be formed and rotates in the direction of arrow A, the corona discharger 2a that uniformly charges the photoreceptor 1, and the photoreceptor 2a that is uniformly charged by the corona discharger 2a. Latent image forming means 3 for forming a latent image by exposing the photoreceptor 1 with a laser beam, a developing roller 4a for forming the latent image formed by the latent image forming means 3 into a toner image, and a developing roller A transfer roller 5 for transferring the toner image formed in 4a to transfer paper (P); a cleaning magnetic brush 6c for removing and cleaning residual toner adhered to the photoreceptor 1 after transfer by the transfer roller 5; The toner discharging screw 6d is rotatable in the form of a roller of the discharge-generating substance adsorption / removal means 7 for contacting and pressing the photoconductor 1 to adsorb and remove the discharge-generating substance generated and adhered to the photoconductor 1. Supported and companion Benefit consisting of the suction member 7a. When a print button of an operation unit (not shown) is pressed, the static elimination lamp 8, the corona discharger 2a,
A predetermined voltage or current is sequentially applied to the developing roller 4a at a predetermined timing, and almost simultaneously therewith, the photoconductor 1, the transfer roller 5, the developing roller 4a, the left screw 4b, the right screw 4c, the cleaning magnetic brush 6c, The toner discharge screw 6d, the suction member 7
a starts to rotate in a predetermined direction. The photoreceptor 1 is neutralized by the neutralizing lamp 8, uniformly charged to −900 V by the corona discharger 2 a which is spaced apart, exposed to the laser beam of the latent image forming means 3, and exposed to black. Potential is -15
A latent image is formed at 0V. The latent image formed by the laser beam of the latent image forming means 3 is developed by a magnetic brush formed by the developing roller 4a with a developing bias of -600V of the developing means 4 to form a toner image. And
The toner image is transferred between the photoconductor 1 and the transfer roller 5.
The paper is fed from the paper feeding mechanism 9 and the registration rollers 10
The toner image on the transfer paper (P) supplied in synchronization with the leading end of the toner image formed on the photoreceptor 1 by the upper registration roller 10a and the lower registration roller 10b is +1.
0 μA is applied and transferred. The transfer paper (P) is separated from the photoreceptor 1 by the separation claw 11 and the fixing device 12
And is discharged to the discharge tray 14 as a copy image via the discharge roller 13 and stored. On the other hand, the residual toner transferred by the transfer roller 5 and remaining on and adhered to the photoconductor 1 is transferred to the cleaning means 6 by the rotation of the photoconductor 1, and the cleaning magnetic brush 6c
Is removed from the photoreceptor 1. Image forming apparatus 400
NOx is generated from the corona discharger 2a and the like, and the discharge product of the nitrate compound generated and adhered to the surface of the photoreceptor 1 is a hygroscopic substance, and has a high resistance at low humidity, and has a high resistance in air at high humidity. Absorbs moisture and reduces resistance. Immediately after the corona discharger 2a, the discharge-generating substance adsorption / removal means 7 arranged on the upstream side of the position of the latent image forming means 3 stops image rotation and stops the rotating photoreceptor 1. A large amount of a nitrate compound discharge-generating substance generated and adhered to the surface of the photoreceptor 1 immediately below the corona discharger 2a is adsorbed and removed immediately after the discharge charging, so that the photoreceptor can be used even during the next image formation in high humidity. 1 prevents the occurrence of an abnormal image such as a blank image flow occurring in the longitudinal direction.

Referring to FIG. 13, the image forming apparatus 500
Is a photosensitive member 1 that carries a toner image to be formed and rotates in the direction of arrow A shown in the figure, the charging roller 2b that uniformly charges the photosensitive member 1, and a photosensitive member that is uniformly charged by the charging roller 2b. The latent image forming unit 3 that forms a latent image by exposing the body 1 with laser light, a developing roller 4a that forms a latent image formed by the latent image forming unit 3 into a toner image, and a developing roller 4a The transfer roller 5 for transferring the formed toner image to transfer paper (P), a cleaning magnetic brush 6c for removing and cleaning residual toner adhered to the photoreceptor 1 after transfer by the transfer roller 5, and the toner The discharge screw 6d is rotatably supported by the roller shape of the discharge-product adsorbing and removing means 7, which contacts and presses the photoconductor 1 to adsorb and remove the discharge-product generated and adhered to the photoconductor 1. Go around That consisting of the suction member 7a.

When a print button of an operation unit (not shown) is pressed, a predetermined voltage or current is sequentially applied to the charge removing lamp 8, the charging roller 2b, and the developing roller 4a at a predetermined timing. Almost at the same time, the photosensitive member 1, the transfer roller 5, the developing roller 4a, the left screw 4b, the right screw 4c, the cleaning magnetic brush 6c, the toner discharge screw 6d, and the suction member 7a start rotating in a predetermined direction. The photoreceptor 1 is neutralized by the neutralization lamp 8, uniformly charged to a negative −900 V by the charging roller 2 b disposed in contact with the photosensitive body 1, and is exposed to the laser beam of the latent image forming unit 3 to be solid black. The potential is -1
A latent image is formed at 50V. The latent image formed by the laser beam of the latent image forming means 3 is developed by a magnetic brush formed by the developing roller 4a with a developing bias of -600V of the developing means 4 to form a toner image. Then, the toner image is fed between the photoconductor 1 and the transfer roller 5 from the paper feeding mechanism 9, and is transferred onto the photoconductor 1 by the upper registration roller 10 a and the lower registration roller 10 b of the registration roller 10. The toner image is formed on the transfer paper (P) supplied in synchronization with the leading end of the toner image formed on
+10 μA is applied and transferred. The transfer paper (P) is separated from the photoreceptor 1 by the separation claw 11, fixed by the fixing device 12, discharged to the discharge tray 14 as a copy image via the discharge roller 13, and stored. . On the other hand, the residual toner transferred by the transfer roller 5 and remaining on and adhered to the photoreceptor 1 is transferred to the cleaning means 6 by the rotation of the photoreceptor 1, and is removed from the photoreceptor 1 by the cleaning magnetic brush 6c. Is done. The image forming apparatus 5
NOx is generated from the charging roller 2b and the like, and the discharge-generating substance of the nitrate compound generated and attached to the surface of the photoreceptor 1 is a hygroscopic substance and has a high resistance at low humidity, and has a high resistance in air at high humidity. Absorbs moisture and reduces resistance. Immediately after the charging roller 2b, the discharge-generating substance-adsorbing and removing means 7 arranged upstream of the position of the latent image forming means 3 stops image rotation and stops the rotating photosensitive member 1. A large amount of a nitrate compound discharge-generating substance generated and adhered to the surface of the photoconductor 1 directly below the charging roller 2b is adsorbed and removed immediately after the discharge charging, so that the photoconductor 1 can be used even during the next image formation at high humidity. The occurrence of an abnormal image such as a blank image flow occurring in the longitudinal direction is prevented.

[0024]

According to the first aspect of the present invention, there is provided an image carrier which rotates while carrying a toner image formed by being charged by the charging means. The latent image formed by the latent image forming means is transferred to the transfer member by transferring the toner image formed by the developing means onto the transfer member. The residual toner adhered on the image carrier after the transfer is removed by the cleaning means. The discharge-generating substance adhering to the image carrier is formed by contacting and pressing the discharge-generating substance adhering onto the image carrier and adsorbing and removing the discharge-generating substance adsorbing and removing means to form an image. It is possible to provide an image forming apparatus that forms a small, low-cost, high-quality image by using a simple and safe apparatus that reduces the amount of wear of the image carrier due to removal of the image and prevents the occurrence of abnormal images. Was. According to the second aspect of the present invention, the latent image formed by the latent image forming unit on the rotating image carrier that carries the toner image formed by being charged by the corona discharger of the charging unit is developed by the developing unit. The transfer unit that transfers the formed toner image to the transfer receiving body removes residual toner adhered on the image carrier after the transfer by the cleaning unit and removes the discharge generating substance adhered on the image carrier onto the image carrier. Since the image is formed by adsorbing and removing the discharge-generating substance adsorbing and removing means by contacting and pressing, the charging means and the image carrier become non-contact, and the image carrier is removed by removing the discharge-generating substance adhering to the image carrier. It has become possible to provide an image forming apparatus capable of forming a small-sized, low-cost, high-quality image with a simple and safe apparatus for further reducing the amount of body wear and preventing occurrence of an abnormal image. According to the third aspect of the present invention, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging roller of the charging means. The transfer unit that transfers the transferred toner image to the transfer-receiving member removes residual toner adhered to the image carrier after the transfer by the cleaning unit and contacts the discharge-generating substance adhered to the image carrier with the image carrier. Since the pressure is applied and the discharge-producing substance adsorption / removal means adsorbs and removes to form an image,
A simple and safe device that reduces the amount of discharge generation material by the charging means and further reduces the amount of wear of the image carrier by removing the discharge generation material attached to the image carrier to prevent the occurrence of abnormal images is small and low cost. An image forming apparatus that forms a high-quality image can be provided.

According to the fourth aspect of the present invention, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging means. The transfer unit that transfers the transferred toner image to the transfer target body removes residual toner adhered to the image carrier after the transfer by the cleaning blade of the cleaning unit, and removes the discharge generating substance adhered to the image carrier by the image carrier. Since the image is formed by adsorbing and removing the discharge-generating substance adsorption and removing means by contacting on the upper side, the cleaning means does not scrape the image carrier at a low linear pressure with a simple device or the amount of shaving is reduced. A simple and safe device that reduces the amount of abrasion of the image carrier due to the removal of discharge generating substances attached to the image carrier and prevents the occurrence of abnormal images. Formation It has become to be able to provide a location. According to the invention of claim 5, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer receiving body removes residual toner adhered to the image carrier after the transfer by applying a linear pressure of 10 to the image carrier by the cleaning blade of the cleaning unit.
g / cm or more, and the discharge-generating substance adhering to the image carrier is pressed against the image carrier by contact and pressed by the discharge-generating substance adsorption / removal means to form an image. Abrasion of the image carrier due to removal of discharge generated substances adhering to the image carrier by means of a device having a simple means without shaving the image carrier at a low linear pressure or with a small amount of shaving to reliably prevent the occurrence of cleaning defects. It has become possible to provide an image forming apparatus capable of forming a small-sized, low-cost, high-quality image by using a simple and safe apparatus for reducing the amount and preventing the occurrence of an abnormal image. According to the invention of claim 6, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer member removes residual toner adhered to the image carrier after transfer with the cleaning brush of the cleaning unit, and contacts the discharge generating material adhered to the image carrier with the image carrier. The discharge-generating substance adsorbing and removing means absorbs and removes to form an image, so that the image-bearing member is not scraped by the cleaning means or the amount of the scraping is further reduced, and the discharge-generating substance adheres to the image bearing member. A simple and safe device for further reducing the amount of wear of the image carrier due to the removal of the image and preventing the occurrence of an abnormal image can provide an image forming apparatus that forms a small, low-cost, high-quality image. It became a jar.

According to the seventh aspect of the present invention, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging means. The transfer means for transferring the transferred toner image to the transfer object removes residual toner adhered to the image carrier after the transfer by removing the cleaning brush of the cleaning means with a pressing force of 2 g / cm or more against the image carrier. The discharge-generating substance adhering to the image carrier is pressed against the image carrier, and the discharge-generating substance adsorption / removal unit adsorbs and removes the image to form an image. The amount of shaving is further reduced or the amount of shaving is further reduced, and the occurrence of cleaning failure is reliably prevented, and the amount of wear of the image carrier due to the removal of the discharge-producing substances attached to the image carrier is further reduced, thereby preventing the occurrence of abnormal images. Simple and safe device has become possible to provide an image forming apparatus for forming an image of high quality low-cost compact. According to the invention of claim 8, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the image receiving body removes residual toner adhered to the image carrier after the transfer with a cleaning magnetic brush of the cleaning unit, and discharge discharge substances adhered to the image carrier onto the image carrier. Since the image is formed by adsorbing and removing the discharge-generating substance adsorption and removal means by contact pressing, the image carrier is not scraped by the cleaning means or the amount to be scraped is extremely small, and the discharge generation adhered to the image carrier is reduced. It is possible to provide an image forming apparatus capable of forming a small, low-cost, high-quality image with a simple and safe apparatus for further reducing the amount of wear of the image carrier due to the removal of a substance and preventing the occurrence of an abnormal image. It began to come. According to the ninth aspect of the present invention, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer receiving body removes residual toner adhered on the image carrier after the transfer by the cleaning unit, and contacts and presses the discharge generating material adhered on the image carrier onto the image carrier. Since the adsorbing member of the discharge generating substance adsorbing and removing means is adsorbed and removed to form an image, the discharging member is adsorbed and removed from the image carrier by the adsorbing member and adheres to the image carrier. It is possible to provide an image forming apparatus that forms a small, low-cost, high-quality image by using a simple and safe apparatus that reduces the amount of wear of the image carrier due to removal of the image and prevents the occurrence of abnormal images. Was.

According to the tenth aspect of the present invention, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging means. The transfer unit that transfers the transferred toner image to the transfer-receiving member removes residual toner adhered on the image carrier after the transfer by the cleaning unit and contacts the discharge-generating substance adhered on the image carrier with the image carrier. By pressing, the adsorbing member of the discharge generating substance adsorbing and removing means adsorbs and removes to form an image, and the adsorbing member is made up of a surface layer and a lower layer. A simple and safe device that reduces the amount of abrasion of the image carrier by preventing discharge generation material attached to the image carrier by removing substances generated by adsorbing and preventing abnormal images. Form an image of It has become possible to provide an image forming apparatus. According to the eleventh aspect of the present invention, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer receiving body removes residual toner adhered on the image carrier after the transfer by the cleaning unit, and contacts and presses the discharge generating material adhered on the image carrier onto the image carrier. The adsorbing member of the discharge product adsorbing and removing means adsorbs and removes to form an image, and the adsorbing member has a surface layer and a lower layer, and the surface layer is supplied with the adsorbent from the lower layer. The discharge generating material is removed from the image carrier by the suction member to which the discharge member is supplied, and the amount of wear of the image carrier due to the removal of the discharge generating material adhering to the image carrier is reduced to prevent the occurrence of an abnormal image. Easy and secure wear There has become possible to provide an image forming apparatus for forming an image of high quality low-cost compact. According to the twelfth aspect of the present invention, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer receiving body removes residual toner adhered on the image carrier after the transfer by the cleaning unit, and contacts and presses the discharge generating material adhered on the image carrier onto the image carrier. The adsorbing member of the discharge generating substance adsorbing and removing means adsorbs and removes to form an image, and the adsorbing member has a surface layer and a lower layer, and the surface layer is supplied with the adsorbent fluid from the lower layer. An adsorbent member to which the adsorbent is supplied removes a large amount of discharge-producing substances from the image carrier by removing the discharge-producing substances attached to the image carrier. Simple to prevent occurrence In safety devices it has become possible to provide an image forming apparatus for forming an image of high quality low-cost compact.

According to the thirteenth aspect, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging means. The transfer unit that transfers the transferred toner image to the transfer-receiving member removes residual toner adhered on the image carrier after the transfer by the cleaning unit and contacts the discharge-generating substance adhered on the image carrier with the image carrier. The adsorbing member of the discharge generating substance adsorbing and removing means adsorbs and removes to form an image. The adsorbing member has a surface layer and a lower layer, and the surface layer is supplied with a mist of the adsorbent from the lower layer. With a simple structure, the adsorbent leaks and flows down and does not adversely affect other devices, and it is supplied with a safe and secure suction member to adsorb and remove discharge generation substances from the image carrier and adhere to the image carrier Discharge generation A simple and safe apparatus for reducing the amount of wear of the image carrier due to the removal of quality and preventing the occurrence of abnormal images can provide an image forming apparatus which forms a small, low cost and high quality image. became. According to the fourteenth aspect of the present invention, the latent image formed by the latent image forming means on the rotating image bearing member carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer receiving body removes residual toner adhered on the image carrier after the transfer by the cleaning unit, and contacts and presses the discharge generating material adhered on the image carrier onto the image carrier. The adsorbing member of the discharge product adsorbing and removing means adsorbs and removes to form an image, and the adsorbing member has a surface layer and a lower layer. The surface layer is supplied with adsorbent gas from the lower layer. The adsorbent absorbs and removes the discharge-generating substance from the image carrier with a suction member that is supplied safely and with little adverse effect on other devices due to leakage and falling of the discharge-producing substance. By removal Simple and safe device to reduce the amount of wear of the image bearing member to prevent the occurrence of an abnormal image has become possible to provide an image forming apparatus for forming an image of high quality low-cost compact.

According to the fifteenth aspect, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging means. The transfer unit that transfers the transferred toner image to the transfer-receiving member removes residual toner adhered on the image carrier after the transfer by the cleaning unit and contacts the discharge-generating substance adhered on the image carrier with the image carrier. When pressed, the adsorbing member of the discharge substance adsorbing and removing means adsorbs and removes to form an image, and the adsorbing member is composed of a surface layer and a lower layer. The surface layer is supplied with the moisture of the adsorbent from the lower layer. Adsorbent is supplied inexpensively with a simple structure, a large amount of discharge-generating substances are adsorbed and removed from the image carrier, and the wear of the image carrier is reduced by removing the discharge-generating substances adhering to the image carrier. Abnormal image Simple and safe device for preventing occurrence has become possible to provide an image forming apparatus for forming an image of high quality low-cost compact. According to the invention of claim 16, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer receiving body removes residual toner adhered on the image carrier after the transfer by the cleaning unit, and contacts and presses the discharge generating material adhered on the image carrier onto the image carrier. The adsorbing member of the discharge generating substance adsorbing and removing means adsorbs and removes to form an image, and the adsorbing member is composed of a surface water-absorbing material and a lower layer. An image formed by removing the discharge-generating substance from the image carrier by absorbing the discharge-generating substance from the image carrier with a simple structure that removes the discharge-generating substance from the image carrier by absorbing or adhesive force. Responsible Easy to reduce the amount of wear of the body to prevent the occurrence of abnormal images such safety devices has become possible to provide an image forming apparatus for forming an image of high quality low-cost compact.

According to the seventeenth aspect, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging means. The transfer unit that transfers the transferred toner image to the transfer-receiving member removes residual toner adhered to the image carrier after the transfer by the cleaning unit and contacts the discharge-generating substance adhered to the image carrier with the image carrier. When pressed, the adsorbing member of the discharge generating substance adsorbing and removing means adsorbs and removes to form an image, and the adsorbing member is made of a polyalkyl oxide such as polyethylene oxide as a water absorbing material of the surface layer, polyvinyl pyrrolidone, polyvinyl alcohol, polyvinyl butyral, and poly. Acrylamide, polypropylene glycol, glue, gelatin, casein, albumin, alginic acid, sodium alginate, Cellulose, carboxymethylcellulose, hydroxyethylcellulose, polyvinylether, polyvinylmethylcellulose, polyethylene glycol, glucose, xylose, sucrose, maltose, arabinose, α-cyclodextrin or starch, and their respective copolymers, graft polymers or crosslinked products and lower layers The adsorbent has a simple structure that supplies the discharge-generating substance and absorbs the adsorbent together with the discharge-generating substance or peels off the discharge-generating substance from the image carrier with adhesive force. Is a simple and safe device that reduces the amount of wear of the image carrier by preventing discharge generated substances that adhere to the image carrier and prevents abnormal images from occurring. An image forming apparatus for forming an image can be provided. It became so.

According to the eighteenth aspect of the present invention, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging means. The transfer unit that transfers the transferred toner image to the transfer-receiving member removes residual toner adhered on the image carrier after the transfer by the cleaning unit and contacts the discharge-generating substance adhered on the image carrier with the image carrier. When pressed, the adsorbing member of the discharge-producing substance adsorbing and removing means adsorbs and removes to form an image, and the adsorbing member is made of polyacrylic acid, polymaleic acid, polymethacrylic acid, polyacrylamide or sodium polyacrylate as a water-absorbing material on the surface layer. In addition, since each derivative or their copolymer polymer is composed of a lower layer, the adsorbent is strongly absorbed or supplied to the discharge generating material together with the discharge generating material. An image-bearing device that removes the discharge-generating substance from the image carrier by using a simple structure that removes the discharge-generating substance from the image carrier by the adhesive force of the image carrier. It has become possible to provide an image forming apparatus capable of forming a small, low-cost, high-quality image with a simple and safe apparatus for reducing the amount of body wear and preventing occurrence of abnormal images. According to the invention of claim 19, the toner formed by the developing means on the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is provided. The transfer unit that transfers the image to the transfer receiving body removes residual toner adhered on the image carrier after the transfer by the cleaning unit, and contacts and presses the discharge generating material adhered on the image carrier onto the image carrier. Since the adsorbing member of the discharge generating substance adsorbing and removing means adsorbs and removes the image to form an image, and the adsorbing member is made up of a surface layer and a lower layer elastic body, discharge is generated from the image carrier by an adsorbing member having a simple structure. The image carrier and the adsorbing member form a nip between the image carrier and the adsorbing member and are efficiently adsorbed and removed, and the amount of abrasion of the image carrier is reduced due to the removal of the discharge generating material attached to the image carrier, thereby generating an abnormal image. Easy and cheap to prevent Do apparatus has become possible to provide an image forming apparatus for forming an image of high quality low-cost compact. According to the twentieth aspect of the present invention, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer receiving body removes residual toner adhered on the image carrier after the transfer by the cleaning unit, and contacts and presses the discharge generating material adhered on the image carrier onto the image carrier. Since the adsorbing member of the discharge generating substance adsorbing and removing means adsorbs and removes the image to form an image, and the adsorbing member is composed of a surface layer and a lower layer of a water-containing material. The generated material is always supplied to the surface layer with the moisture of the adsorbent to be efficiently adsorbed and removed, and the amount of abrasion of the image carrier is reduced by removing the discharge generated material adhering to the image carrier, thereby preventing the occurrence of abnormal images. Easy and safe to wear There has become possible to provide an image forming apparatus for forming an image of high quality low-cost compact.

According to the twenty-first aspect, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging means. The transfer unit that transfers the transferred toner image to the transfer-receiving member removes residual toner adhered on the image carrier after the transfer by the cleaning unit and contacts the discharge-generating substance adhered on the image carrier with the image carrier. The image is formed by adsorbing and removing the adsorbing member of the discharge generating substance adsorbing and removing means by pressing, and the adsorbing member is made up of a surface layer and a lower layer foam. The discharge-generating substance is constantly supplied to the surface layer of the adsorbent to supply the discharge-generating substance to the surface layer, and the image-forming body and the adsorbing member form a nip to efficiently adsorb and remove the discharge-generating substance and adhere to the image carrier. Picture by removal of material Simple and safe device to reduce the amount of wear of the bearing member to prevent the occurrence of an abnormal image has become possible to provide an image forming apparatus for forming an image of high quality low-cost compact. According to the invention of claim 22, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer receiving body removes residual toner adhered on the image carrier after the transfer by the cleaning unit, and contacts and presses the discharge generating material adhered on the image carrier onto the image carrier. The adsorbing member of the discharge generating substance adsorbing and removing means adsorbs and removes to form an image, and the adsorbing member is made of urethane rubber, silicon rubber, ethylene propylene rubber, butadiene rubber, styrene rubber, chloroprene rubber, butylene rubber of a surface layer and a lower layer foam. Or it is made of an elastomer, so the discharge product is always supplied from the image carrier by the adsorption member with a simple structure, and the moisture of the adsorbent is supplied to the surface layer. The image carrier and the adsorbing member form a nip and are efficiently adsorbed and removed, thereby reducing the amount of wear on the image carrier due to the removal of discharge-producing substances adhering to the image carrier, thereby generating an abnormal image. It has become possible to provide an image forming apparatus that forms a high-quality image at a low cost with a simple and safe apparatus for preventing it.

According to the twenty-third aspect, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging means. The transfer unit that transfers the transferred toner image to the transfer-receiving member removes residual toner adhered on the image carrier after the transfer by the cleaning unit and contacts the discharge-generating substance adhered on the image carrier with the image carrier. The image is formed by adsorbing and removing the adsorbing member of the discharge generating substance adsorbing and removing means by pressing, and the adsorbing member is composed of a surface layer and a porous material of the lower layer. The discharge generating substance is always supplied from the body to the surface layer of the adsorbent, and the discharge generating substance is efficiently adsorbed and removed by forming a nip portion between the image carrier and the adsorbing member, and the discharge adheres to the image carrier. By removal of product Simple and safe device to reduce the amount of wear of the image bearing member to prevent the occurrence of an abnormal image has become possible to provide an image forming apparatus for forming an image of high quality low-cost compact. According to the twenty-fourth aspect of the invention, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer receiving body removes residual toner adhered on the image carrier after the transfer by the cleaning unit, and contacts and presses the discharge generating material adhered on the image carrier onto the image carrier. The adsorbing member of the discharge generating substance adsorbing and removing means adsorbs and removes to form an image, and the adsorbing member is made of a sponge or urethane foam of a porous material of a surface layer and a lower layer. The discharge substance is always supplied from the image carrier to the surface layer of the adsorbent, and the discharge substance is efficiently adsorbed and removed by forming a nip portion between the image carrier and the adsorption member, and adheres to the image carrier. Discharge products It is possible to provide an image forming apparatus that forms a small, low-cost, high-quality image by using a simple and safe apparatus that reduces the amount of wear of the image carrier due to removal of the image and prevents the occurrence of abnormal images. Was. According to the twenty-fifth aspect of the present invention, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer receiving body removes the residual toner adhered to the image carrier after the transfer by the cleaning unit and contacts and presses the discharge generating material adhered to the image carrier onto the image carrier. Since the discharge-producing substance-adsorbing / removing means adsorbs and removes to form an image and the discharge-producing substance-absorbing / removing means has a roll shape, the discharge-producing substance-absorbing / removing means has a large surface area and can hold a large amount of the discharge-producing substance. A simple and safe device that reduces the amount of wear on the image carrier by removing discharge-producing substances adhering to the image carrier and prevents the occurrence of abnormal images provides a small, low-cost, high-quality image. form It has become possible to provide an image forming apparatus.

According to the twenty-sixth aspect, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging means. The transfer unit that transfers the transferred toner image to the transfer-receiving member removes residual toner adhered on the image carrier after the transfer by the cleaning unit and contacts the discharge-generating substance adhered on the image carrier with the image carrier. The discharge-generating substance adsorption / removal means is adsorbed and removed to form an image, and the discharge-generating substance adsorption / removal means is rotatable and rotatable. A simple and safe device that reduces the amount of abrasion of the image carrier due to the removal of the discharge-producing substances attached to the image carrier and prevents the occurrence of abnormal images at a low cost forms high-quality images at a small size and at low cost. Picture It has become possible to provide a forming apparatus. According to the invention of claim 27, the toner formed by the developing means on the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means The transfer unit that transfers the image to the transfer receiving body removes the residual toner adhered to the image carrier after the transfer by the cleaning unit and contacts and presses the discharge generating material adhered to the image carrier onto the image carrier. Since the discharge-product adsorbing / removing means adsorbs and removes to form an image, and the discharge-product adsorbing / removing means is arranged upstream of the latent image forming means, there is no movement of electric charge during latent image formation. An image forming apparatus that forms a small, low-cost, high-quality image with a simple and safe device that reduces the amount of wear of the image carrier by removing discharge-producing substances attached to the image carrier and prevents occurrence of abnormal images. Can provide Became so that.

According to the twenty-eighth aspect, the latent image formed by the latent image forming means is formed by the developing means on the rotating image carrier which carries the toner image formed by being charged by the charging means. The transfer unit that transfers the transferred toner image to the transfer-receiving member removes residual toner adhered on the image carrier after the transfer by the cleaning unit and contacts the discharge-generating substance adhered on the image carrier with the image carrier. The discharge-producing-substance adsorbing and removing means adsorbs and removes to form an image, and the discharge-producing-substance adsorbing and removing means adjusts the contact pressing force applied to the image carrier by the contact pressing force adjusting means. Therefore, the contact pressing force of the discharge generating substance adsorption / removal means for pressing against the image carrier can be adjusted, and the amount of wear of the image carrier due to the removal of the discharge generating substance adhering to the image carrier is reduced, resulting in an abnormal image. Simple and safe device for preventing occurrence has become possible to provide an image forming apparatus for forming an image of high quality low-cost compact. According to the twenty-ninth aspect of the present invention, the latent image formed by the latent image forming means on the rotating image carrier carrying the toner image formed by being charged by the charging means is formed by the developing means. The transfer unit that transfers the image to the transfer receiving body removes residual toner adhered on the image carrier after the transfer by the cleaning unit, and contacts and presses the discharge generating material adhered on the image carrier onto the image carrier. The discharge-product adsorbing and removing means adsorbs and removes to form an image, and the discharge-product adsorbing and removing means replenishes the adsorbent with the adsorbent replenishing means. A simple and safe device that can reduce the amount of wear of the image carrier due to the removal of discharge-producing substances attached to the image carrier and prevent abnormal images from occurring Form an image It has become possible to provide an image forming apparatus.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating an image forming apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating a main part of the image forming apparatus according to the exemplary embodiment of the present invention.

FIG. 3 is an explanatory diagram illustrating characteristics of a linear pressure (g / cm) of a cleaning blade and a wear amount (μm) of an image carrier in an image forming apparatus according to an embodiment of the present invention.

FIG. 4 is an explanatory diagram illustrating characteristics of a pressing force (g / cm) of a cleaning brush and a wear amount (μm) of an image carrier in an image forming apparatus according to an embodiment of the present invention.

FIG. 5 shows the number of sheets passed (* 1000) and the amount of wear (μm) of the image carrier of the image forming apparatus according to the embodiment of the present invention.
FIG. 4 is an explanatory diagram for explaining characteristics of FIG.

FIG. 6 is an explanatory diagram illustrating a potential on an image carrier of the image forming apparatus according to the embodiment of the present invention.

FIG. 7 is an explanatory diagram illustrating movement of a potential on an image carrier of the image forming apparatus according to the embodiment of the present invention.

FIG. 8 is an explanatory diagram illustrating another main part of the image forming apparatus according to the exemplary embodiment of the present invention.

FIG. 9 is an explanatory diagram illustrating an image forming apparatus according to another embodiment of the present invention.

FIG. 10 is an explanatory diagram illustrating an image forming apparatus according to another embodiment of the present invention.

FIG. 11 is an explanatory diagram illustrating an image forming apparatus according to another embodiment of the present invention.

FIG. 12 is an explanatory diagram illustrating an image forming apparatus according to another embodiment of the present invention.

FIG. 13 is an explanatory diagram illustrating an image forming apparatus according to another embodiment of the present invention.

[Explanation of symbols]

0 Image forming apparatus 1 Image carrier, 1a Normally hard photoconductor, 1b Hard photoconductor 2 Charging means, 2a Corona discharger, 2b Charging roller 3 Latent image forming means 4 Developing means, 4a Developing roller, 4b Left screw, 4c Right screw 5 transfer means 6 cleaning means, 6a cleaning blade,
Reference numeral 6b Cleaning brush, 6c Cleaning magnetic brush, 6d Toner discharge screw 7 Discharge generated material adsorption removing means, 7a adsorption member, 7a
₁ surface layer, 7a ₂ lower layer, 7a ₃ hollow core shaft, 7b adsorbent, 7c contact pressing force adjusting means, 7c ₁ elastic body, 7
c ₂ adjusting screw, 7 d adsorbent replenishing means, 7 d ₁ replenishing port 8 static elimination lamp 9 paper feed mechanism 10 registration roller, 10 a upper registration roller, 1
0b Lower registration roller 11 Separation claw 12 Fixing device 13 Discharge roller 14 Discharge tray 100 Image forming device 200 Image forming device 300 Image forming device 400 Image forming device 500 Image forming device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masahiko Akato 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd. (72) Hiromitsu Takagaki 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Co., Ltd. (72) Inventor Kiyoshi Tanikawa 1-3-6 Nakamagome, Ota-ku, Tokyo F-term in Ricoh Co., Ltd. (Reference) 2H003 AA12 AA18 BB11 CC01 CC05 CC06 2H034 AA04 AA06 BC01 BC03 BD07 BE00 BF07 4G066 AC01A AC01B AC02A AC02B AC03A AC03B AC07A AC07B AC12A AC12B AC16A AC16B AC17A AC17B AC33A AC33B AD11A AD11B AE05A AE05B AE06A AE06B BA03 CA56 EA20

Claims (29)

[Claims] 1. An image forming apparatus for forming an image by removing a discharge-generating substance generated by a discharge on an image carrier, wherein the image carrier carries a toner image to be formed and rotates. A charging unit for charging the carrier, a latent image forming unit for forming a latent image on the image carrier uniformly charged by the charging unit, and a latent image formed by the latent image forming unit as a toner image. Developing means for forming, transfer means for transferring the toner image formed by the developing means to a transfer object,
A cleaning unit for removing and cleaning residual toner adhered to the image carrier after transfer by the transfer unit; and a discharge generation generated and adhered on the image carrier by contacting and pressing the image carrier. An image forming apparatus comprising: a discharge-producing substance adsorbing and removing means for adsorbing and removing a substance. 2. An image forming apparatus according to claim 1, wherein said charging means is a corona discharger. 3. The image forming apparatus according to claim 1, wherein the charging unit is a charging roller. 4. The image forming apparatus according to claim 1, wherein the cleaning unit is a cleaning blade. 5. The image forming apparatus according to claim 4, wherein a linear pressure of the cleaning blade against the image carrier is 10 g / cm or more. 6. An image forming apparatus according to claim 1, wherein said cleaning means includes a cleaning brush. 7. The image forming apparatus according to claim 6, wherein a pressing force of the cleaning brush against the image carrier is 2 g / cm or more. 8. The image forming apparatus according to claim 1, wherein the cleaning unit includes a cleaning magnetic brush. 9. The image forming apparatus according to claim 1, wherein the discharge-producing substance adsorbing and removing unit comprises an adsorbing member for adsorbing the discharge-producing substance. Characteristic image forming apparatus. 10. The image forming apparatus according to claim 9, wherein the suction member includes a surface layer and a lower layer. 11. The image forming apparatus according to claim 10, wherein the surface layer is supplied with an adsorbent from a lower layer. 12. The image forming apparatus according to claim 11, wherein the adsorbent is a fluid. 13. The image forming apparatus according to claim 11, wherein the adsorbent is a mist. 14. The image forming apparatus according to claim 11, wherein the adsorbent is a gas. 15. The image forming apparatus according to claim 11, wherein the adsorbent is water. 16. The method of claim 10, 11, 12, 13, or 14.
Or the surface layer is a water-absorbing material. 17. The image forming apparatus according to claim 16, wherein the water absorbing material of the surface layer is polyalkyl oxide such as polyethylene oxide, polyvinyl pyrrolidone, polyvinyl alcohol, polyvinyl butyral, polyacrylamide, polypropylene glycol, glue, gelatin, Casein, albumin, alginic acid, sodium alginate, methylcellulose, carboxymethylcellulose, hydroxyethylcellulose, polyvinyl ether, polyvinylmethylcellulose, polyethylene glycol, glucose, xylose, sucrose, maltose, arabinose, α-cyclodextrin or starch, and their respective copolymers, An image forming apparatus, which is a graft polymer or a crosslinked product. 18. The image forming apparatus according to claim 16, wherein the water-absorbing material of the surface layer is polyacrylic acid, polymaleic acid, polymethacrylic acid, polyacrylamide, or sodium polyacrylate. An image forming apparatus comprising: 19. The method of claim 10, 11, 12, 13, 1.
19. The image forming apparatus according to 4, 15, 16, 17 or 18, wherein the lower layer is an elastic body. 20. The method of claim 10, 11, 12, 13, 1.
20. The image forming apparatus according to 4, 15, 16, 17, 18 or 19, wherein the lower layer is a water-containing material. 21. The method of claim 10, 11, 12, 13, 1.
The image forming apparatus according to 4, 15, 16, 17, 18, 19, or 20, wherein the lower layer is a foam. 22. The image forming apparatus according to claim 21, wherein the lower layer foam is made of urethane rubber, silicone rubber,
An image forming apparatus comprising ethylene propylene rubber, butadiene rubber, styrene rubber, chloroprene rubber, butylene rubber or an elastomer. 23. The method of claim 10, 11, 12, 13, 1.
The image forming apparatus according to 4, 15, 16, 17, 18, 19, or 20, wherein the lower layer is a porous body. 24. The image forming apparatus according to claim 23, wherein the lower porous body is sponge or urethane foam. 25. The method of claim 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15, 16,
The image forming apparatus according to any one of 17, 18, 19, 20, 21, 22, 23, and 24, wherein the discharge-generated-substance adsorbing and removing unit has a roller shape. 26. The method of claim 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15, 16,
The image forming apparatus according to any one of 17, 18, 19, 20, 21, 22, 23, 24, and 25, wherein the discharge-product-adsorbing and removing unit is rotatable and rotatable. 27. The method of claim 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 2
27. The image forming apparatus according to claim 5 or 26, wherein the discharge-product adsorbing and removing unit is disposed upstream of the latent image forming unit. 28. The method of claim 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 2
28. The image forming apparatus according to 5, 26, or 27, wherein the discharge-producing-substance-adsorbing / removing unit includes a contact-pressing-force adjusting unit that adjusts a contact-pressing force for contact-pressing on the image carrier. . 29. The method of claim 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 2
The image forming apparatus according to any one of 5, 26, 27, and 28, wherein the discharge-product adsorbing and removing unit includes an adsorbent replenishing unit that replenishes an adsorbent.