JPH11174865A - Image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image forming device capable of preventing the floating of a printing paper at the time of executing printing and smoothly carrying the printing paper. SOLUTION: In this image forming device of an orthogonal transfer system, a toner image carried on a toner image carrier 1 laid in a direction perpendicular to the direction of carrying the printing paper 5 by plural rollers is transferred to the printing paper 5 in the direction perpendicular to the direction of carrying the printing paper 5 by a transfer opposite roller 4 and the toner image after being transferred to the printing paper 5 is fixed. In such a case, it is constituted so that small holes 23 are provided in a transfer plate 21 on which the printing paper 5 is placed at the time of transferring the paper 5 to suck the paper 5 through the small holes 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an orthogonal transfer type image forming apparatus for transferring a toner image onto a printing paper in a direction perpendicular to a conveying direction of the printing paper.

[0002]

2. Description of the Related Art In recent years, toner-type image forming apparatuses capable of forming clear images with excellent resolution, such as laser printers, have become widespread. Among such toner-type image forming apparatuses, Japanese Patent Application No. 7-328600.
As described above, the orthogonal transfer type image forming apparatus that moves the toner image carrier in a direction orthogonal to the transport direction of the printing paper and transfers the toner image in small steps at a time is a small-sized product due to its configuration. It is very suitable for promoting the conversion.

[0003] A conventional image forming apparatus which is compatible with color by the orthogonal transfer system will be described below.

FIG. 12 is a schematic structural view of a conventional image forming apparatus, FIG. 13 is a perspective view showing a transfer process of the conventional image forming apparatus, and FIG. 14 is a toner layer of a developing roller of the conventional image forming apparatus. It is a schematic diagram which shows the state of formation.

[0005] In FIGS. 12 and 13, a toner image carrier 1 composed of a photosensitive belt whose surface is coated with a layer of an organic photoconductive material comprises a support roller 2, a displacement roller 3,
It is stretched by a plurality of rollers such as the transfer opposing roller 4 in a direction orthogonal to the transport direction of the printing paper 5, and rotates in the direction of an arrow during image formation to form a toner image on the surface of the toner image carrier 1. . Around the toner image carrier 1, charging means 6, developing means 7, cleaning means 8, static elimination means 9 and the like are arranged, and an upper portion of the toner image carrier 1 is exposed to laser light. Means 10 are arranged. As shown by the arrow in FIG. 12, when the toner image carrier 1 rotates in a direction orthogonal to the conveying direction of the printing paper 5, the portion passing through the charging means 6 is uniformly charged to about -600V. Exposure means 10 irradiates the surface of toner image carrier 1 with laser light corresponding to the four primary colors on the surface of toner image carrier 1 based on the image signals of the four primary colors of cyan, magenta, yellow, and black. When the potential of the portion irradiated with the laser beam rises to about −100 V, an electrostatic latent image divided into four for each primary color is simultaneously formed on the surface of the toner image carrier 1. When four primary color toners are pressed against the portion where the electrostatic latent image is formed by the developing roller 11, toner images of the four primary colors, each of which becomes a visible image, appear on the toner image carrier 1 one after another.

[0006] As shown in FIGS.
Is composed of four parts for each primary color.
C is cyan, developing means 7M is magenta, developing means 7Y is yellow, and developing means 7B is black. Are formed on the developing roller 11 of each of the four primary colors.
As shown in FIG. 14, the developing roller 11 has toner layers 1 of four colors of cyan, magenta, yellow, and black from the right.
2 are formed, and each toner layer 12 is separated by a gap 13 or a gap 14 to prevent color mixing. However, since these gaps 13 and 14 are sealed by sealing materials 15 and 16, The toner does not adhere.

As shown in FIG. 13, the orthogonal transfer type image forming apparatus is characterized in that the rotation of the toner image carrier 1 and the conveyance of the printing paper 5 are temporarily stopped during the transfer, and The toner image carrier 1 is displaced by being rubbed (rubbed) along with the movement of the transfer opposing roller 4 on the printing paper 5 that is stationary above (see also FIG. 12). At this time, the displacement roller 3 is used to prevent the toner image carrier 1 from sagging.
Is displaced following the movement of the transfer opposing roller 4.

[0008] During the transfer step, the printing paper 5
If the printing paper 5 is not lifted from the transfer plate 17 and the slippage of the printing paper 5 is not prevented, there is a possibility that a printing shift occurs. Therefore, in order to suppress the occurrence of printing deviation, a positive voltage having a polarity opposite to that of the toner image is applied to the transfer plate 17 by an application unit (not shown) so that a positive charge is applied. Then, the printing paper 5 is electrostatically attracted by the static electricity generated on the surface of the transfer plate 17 and is temporarily bound on the transfer plate 17. Then, the transfer plate 17 having a positive charge attracts the negatively charged toner images of the four primary colors from the surface of the toner image carrier 1 to be peeled off and transferred to the printing paper 5.

Whenever the transfer for one process is completed, the transfer opposing roller 4 passes over the printing paper 5 and moves out of the area of the printing paper 5, so that the toner image carrier 1 is separated from the printing paper 5. . Immediately before the toner image carrier 1 is separated from the printing paper 5, since the application of the voltage to the transfer plate 17 has already been stopped, the printing paper 5 electrostatically attracted to the transfer plate 17 is released. I have. The transport of the printing paper 5 is started to move to the next transfer step, and the transport distance of the printing paper 5 is only the width of the toner layer 12 of each color shown in FIG. The printing paper 5 is intermittently sent to the fixing unit 18 by the width of the toner layer 12 of each color. When the printing paper 5 on which the image has been transferred is conveyed and placed on the support member 19, the fixing means 18 of the hot air fixing system for performing the fixing without contacting the printing paper 5 has a heat source and a blower fan inside. Hot air is generated by the hot air means 20 and blown onto the printing paper 5 so that the toner particles on the surface of the printing paper 5 are melted and fixed on the printing paper 5.

[0010]

However, in the conventional image forming apparatus as described above, as described above, a positive voltage is applied to the transfer plate 17 by the application means (not shown) to attract the printing paper 5 to the transfer plate 17. ing. Then, the toner image carrier 1
When the application of the voltage to the transfer plate 17 is stopped immediately before the paper sheet 5 is separated from the print sheet 5 and the suction action is released, the print sheet 5 electrostatically attracted to the transfer plate 17 is theoretically released from the suction state. Should be there. However, in practice, even if the application of the voltage is stopped and the suction action is released, the suction state of the printing paper 5 is weakened, but the release state is not immediately reached. This is because the charge remains on the transfer plate 17 for a while even after the application of the voltage is stopped, so that the suction state of the printing paper 5 is released after the suction action by the applying unit is released. In reality, there will be some time lag. For this reason,
Apparently, the coefficient of friction between the printing paper 5 and the transfer plate 17 has increased, and there has been a problem that the transport of the printing paper 5 does not proceed smoothly.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide an image forming apparatus which can prevent the printing paper from floating during printing and can smoothly transport the printing paper.

[0012]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention provides a method for transferring a toner image carried on a toner image carrier stretched by a plurality of rollers in a direction perpendicular to a conveying direction of a printing paper. An orthogonal transfer type image forming apparatus that transfers the toner image transferred to the printing paper in a direction orthogonal to the transport direction of the printing paper by an opposing roller and fixes the toner image transferred to the printing paper. Are provided on the transfer plate on which the printing paper is placed, and the printing paper is sucked through the small holes.

According to the present invention, it is possible to provide an image forming apparatus which can prevent the printing paper from floating during printing and can smoothly transport the printing paper.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a toner image carried on a toner image carrier stretched by a plurality of rollers in a direction perpendicular to a conveying direction of a printing paper is transferred and opposed. An orthogonal transfer type image forming apparatus in which the toner image transferred to the printing paper is fixed by transferring the printing paper to the printing paper in a direction orthogonal to the transport direction of the printing paper by a roller. The transfer plate to be placed is provided with a small hole, and the printing paper is sucked through the small hole. This prevents the printing paper from floating during printing and transports the printing paper because no charge remains on the transfer plate surface. Can be performed smoothly.

According to a second aspect of the present invention, in the first aspect of the invention, the toner image carrier comprises a photosensitive belt, and an exposure means for exposing the toner image carrier based on an image signal; And developing means for developing the image carrier, which prevents the printing paper from floating during printing and prevents the charge from remaining on the transfer plate surface, so that the printing paper can be transported smoothly. Has an action.

According to a third aspect of the present invention, in the first aspect of the present invention, the pores of the transfer plate are pressed by a transfer opposing roller via a toner image carrier. The transfer plate is provided within the transfer area of the transfer plate, and has the effect of preventing the printing paper from floating during printing and also allowing the transfer of the print paper to be carried out smoothly because no charge remains on the transfer plate surface. .

According to a fourth aspect of the present invention, in the third aspect of the present invention, the developing means is configured to develop only a single color, thereby preventing the printing paper from floating during printing. Since the charges do not remain on the transfer plate surface, the printing paper can be transported smoothly.

According to a fifth aspect of the present invention, in the third aspect of the present invention, the pores of the transfer plate are formed in a transfer area of the transfer plate pressed by the transfer opposing roller via the toner image carrier. The toner image formed on the toner image carrier is provided so as to avoid the area corresponding to the development area of each color. This has the effect of minimizing the effect of airflow that may separate from the air.

According to a sixth aspect of the present invention, in the fifth aspect, the developing means comprises at least cyan,
The development is performed by using the three primary colors of magenta and yellow. This prevents floating of the printing paper at the time of printing and ensures that the printing paper can be transported smoothly because no electric charge remains on the transfer plate surface. Having.

According to a seventh aspect of the present invention, in the fifth aspect of the invention, the developing means comprises at least cyan,
The development is performed by using the four primary colors of magenta, yellow, and black. The printing paper is prevented from floating during printing, and the charge does not remain on the surface of the transfer plate, so that the printing paper can be transported smoothly. It has the action of:

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
As will be described with reference to FIG. 11, the same parts as those in the conventional example are denoted by the same reference numerals.

(Embodiment 1) The outline of one embodiment of the present invention is that a fine hole provided on a transfer plate by suction means is used instead of the conventional electric suction method of electrostatic suction by application means. A mechanical suction system called vacuum suction through the head, eliminating the problem of residual charge associated with electrostatic suction, and contriving to facilitate the transfer of printing paper after the completion of one transfer process. is there.

The details of one embodiment of the present invention are shown in FIG.
This will be described with reference to FIG. FIG. 1 is a schematic configuration diagram of an image forming apparatus according to an embodiment of the present invention.
FIG. 3 is a perspective view illustrating a transfer process of the image forming apparatus according to the embodiment of the present invention. FIGS. 3 and 4 are schematic views showing the formation state of the toner layer of the developing roller of the image forming apparatus according to one embodiment of the present invention, and FIGS. 5 and 6 are image forming apparatuses according to one embodiment of the present invention. FIG. 4 is a schematic view showing a transfer plate and a suction unit of FIG. FIGS. 7 to 10 are schematic diagrams showing a transfer state of the image forming apparatus according to one embodiment of the present invention, and FIG. 11 is a schematic diagram of a fixing unit of the image forming apparatus according to one embodiment of the present invention. .

In FIG. 1 and FIG. 2, a toner image carrier 1 composed of a photosensitive belt whose surface is coated with a layer of an organic photoconductive material comprises a plurality of support rollers 2, a displacement roller 3, a transfer opposing roller 4, and the like. These rollers are stretched in the direction perpendicular to the direction in which the printing paper 5 is conveyed by the rollers, and rotate in the direction of an arrow during image formation, whereby a toner image is formed on the surface of the toner image carrier 1. Around the toner image carrier 1,
A charging unit 6, a developing unit 7, a cleaning unit 8, a charge removing unit 9 and the like are arranged, and an exposure unit 10 for irradiating a laser beam is arranged above the toner image carrier 1. In the embodiment of the present invention, a case where a laser is used as a typical example of the exposure unit 10 will be described. However, the exposure unit 10 may use not only a laser but also an LED or an LCD. As shown by an arrow in FIG. 1, when the toner image carrier 1 rotates in a direction perpendicular to the direction in which the printing paper 5 is conveyed, the portion passing through the charging means 6 becomes -6.
It is uniformly charged to about 00V. Exposure means 10 is cyan,
Based on the image signals of the four primary colors of magenta, yellow, and black, one line of the surface of the toner image carrier 1 is irradiated with laser light corresponding to the four primary colors. When the potential of the portion irradiated with the laser beam rises to about −100 V, an electrostatic latent image divided into four for each primary color is simultaneously formed on the surface of the toner image carrier 1. When four primary color toners are pressed against the portion where the electrostatic latent image is formed by the developing roller 11, toner images of the four primary colors, each of which becomes a visible image, appear on the toner image carrier 1 one after another.

More specifically, as shown in FIG. 3, the development of the four primary colors is performed simultaneously by the four primary color toner layers 12 formed on the common developing roller 11 so as to be divided into four for each primary color. At the time of development, the developing means 7 causes the developing roller 11 to which the negatively charged toners of the four primary colors adhere to the toner image carrier 1 in order to make the respective electrostatic latent images corresponding to the four primary colors visible. To transfer the toners of the four primary colors to the portions of the electrostatic latent image divided into the four primary colors on the surface of the toner image carrier 1 so that the toner images of the four primary colors of cyan, magenta, yellow, and black are It is formed in a state divided into.

As shown in FIGS. 1 and 2, the developing means 7 is composed of four parts for each primary color. The developing means 7C is cyan, the developing means 7M is magenta, the developing means 7Y is yellow, and the developing means 7B The toner layers of the four primary colors of cyan, magenta, yellow, and black are formed on the common developing roller 11 so as to be divided into four for each of the primary colors by using the primary color toners contained therein. As shown in FIG. 3, a toner layer 12 of four colors of cyan, magenta, yellow, and black is formed on the developing roller 11 from the right, and each toner layer 12 has a gap 13 for preventing color mixing.
Alternatively, it is separated by the gap 14, but this gap 13,
The portion 14 is sealed by the sealing materials 15 and 16, so that the toner does not normally adhere thereto.

FIG. 3 shows an example of the color developing roller 11 according to claim 7. In order to reproduce the color tone of a photograph or the like, pale cyan and pale magenta are added in addition to the four primary colors. Is also good. Although not shown, a description will be given of “claim 6”. Since the black color tone itself can be synthesized with the three primary colors of cyan, magenta, and yellow,
The developing roller 11 is formed by removing cyan, magenta,
It is also possible to use one for the three primary colors of yellow. Further, as shown in FIG. 4, the developing roller 11 itself may correspond to a single color such as black according to claim 4, but in this case, the gaps 14 at both ends of the single color toner layer 12 are
6 will seal.

At the time of transfer to the printing paper 5, as shown in FIG.
1 (see also FIG. 1), the printing paper 5 is stopped,
The suction of the printing paper 5 placed on the transfer plate 21 by the suction means 22 is started to prevent the printing paper 5 from floating. The suction state of the printing paper 5 will be described later in detail. Then, after the rotation of the toner image carrier 1 is stopped, the portion of the toner image carrier 1 on which the four primary color toner images are formed is rubbed against the printing paper 5 by rolling the transfer opposing roller 4 from the back side to rub the four primary colors. Is transferred, and the toner image carrier 1 is displaced from the left end or the right end of the printing paper 5 by one process in the opposite direction. At this time, the transfer end surface of the toner image carrier 1 on which the transfer of the toner images of the four primary colors has been completed is sequentially separated from the printing paper 5 as the transfer opposing roller 4 passes.

The transfer by the toner image carrier 1 can be performed not only on the outward path but also on the return path. At this time, when the moving direction of the toner image carrier 1 is viewed from the printing paper 5 side, the toner image carrier 1 is displaced on the printing paper 5 in a direction orthogonal to the transport direction of the printing paper 5.

The suction state of the printing paper 5 will be described in detail with reference to FIGS. 1, 2 and 5. When the transfer plate 21 is pressed by the transfer opposing roller 4 via the toner image carrier 1, A plurality of pores 23 are provided in the transfer area. A suction means 22 composed of a blower fan or the like is disposed behind the fine pores 23 of the transfer plate 21.
The printing paper 5 placed on the transfer plate 21 is sucked onto the transfer plate 21. Since the suction action by the suction means 22 is mechanical, the reaction is quick, and if the suction means 22 stops the suction action, the suction state of the printing paper 5 is immediately released. If the printing paper 5 to be placed on the transfer plate 21 is of the maximum size that can be printed, the pores 23 are completely covered with the printing paper 5, so that the suction by the suction means 22 requires only a small amount of airflow. Do not generate. However, if the printing paper 5 to be placed on the transfer plate 21 is of a small size, there are many of the pores 23 that are not covered with the printing paper 5.
The suction action of this will generate a considerable amount of airflow.
Therefore, although not shown, an exhaust port is directly connected to the suction means 22, and the air flow generated by the suction action of the suction means 22 is exhausted to the outside without interruption.

The transfer plate 21 shown in FIG. 5 relates to "Claim 5", and it is assumed that the developing means 7 corresponds to the color shown in FIG. Therefore, the transfer plate 2
The pores 23 are provided so as to avoid the area corresponding to the development area of each color formed on the toner image carrier 1 in the one transfer area. That is, the pores 23 are provided in an area corresponding to the non-development area formed on the toner image carrier 1 in the transfer area of the transfer plate 21. If the pores 23 are provided in the above-described area, the possibility that the toner image formed in the developing area on the toner image carrier 1 is peeled off by the influence of the air flow generated by the suction means 22 is almost eliminated. be able to.

The transfer plate 21 shown in FIG. 6 relates to "claim 3", and it is assumed that the developing means 7 is of a single color type shown in FIG. Transfer plate 2 shown in FIG.
1 and the transfer plate 21 shown in FIG. 5 only differ in the arrangement of the fine holes 23, and the fine holes 23 may be arranged evenly in the transfer area of the transfer plate 21. However, the transfer plate 2
Since the fine holes 23 are also arranged in the area corresponding to the development area formed on the toner image carrier 1 in the transfer area of the first transfer area, it is formed in the development area on the toner image carrier 1 unlike the case corresponding to color. The generated toner image may be somewhat affected by the airflow generated by the suction unit 22. However,
When transferred to the printing paper 5, there is no effect until the printing quality is reduced.

Each time the transfer for one process is completed, the transfer roller 4 moves over the printing paper 5 and moves out of the area of the printing paper 5, so that the toner image carrier 1 is separated from the printing paper 5. . When the toner image carrier 1 is separated from the printing paper 5, the suction unit 22 stops the suction operation. However, unlike the conventional example, in the present invention, the suctioning unit 22 transfers the printing paper 5 to the transfer plate 21 without a pause after stopping the suction operation. Is released. The transport of the printing paper 5 is started to move to the next transfer step, but the transport of the printing paper 5 is smooth because the printing paper 5 does not stick to the transfer plate 21 during the transport. Done. Incidentally, the transport distance of the printing paper 5 is shown in FIGS.
0 is the width of the developing area of each color of the toner image carrier 1.

While the printing paper 5 is being conveyed, as shown in FIG. 1, the cleaning means 5 removes residual toner on the surface of the toner image carrier 1 with a cleaning blade or a cleaning brush to generate waste toner. The collected toner image carrier 1 is physically cleaned. Then, the charge removing means 9 is provided for the toner image carrier 1 after removing the residual toner.
The surface of the toner image carrier 1 is electrically cleaned by neutralizing the negative charges remaining on the surface of the toner image carrier 1. Note that the installation of the charge removing means 9 is not an essential requirement.

As shown in FIGS. 7 to 10, the toner image carrier 1 has a developing area for each color developed by the developing means 7 and a non-developing area sandwiched between the developing areas. The width of the development area in the transport direction of No. 5 is set to be the same for each color. In particular, in FIGS. 7 to 10, the width of the development area and the width of the non-development area are set to 1: 1. Less than,
A method for forming a color toner image will be described.

The method of forming a color toner image starts from the state shown in FIG. 7 at first. However, in the first transfer, only the {cyan} toner image is transferred in one step, so Only the cyan toner image is transferred. When the printing paper 5 is conveyed by the width of the development area, the second transfer is performed. However, even in the second transfer, only the cyan image is transferred in one process, so that the cyan in the second column is also transferred. Is transferred.

Next, as shown in FIG. 8, in the third transfer, the {cyan, magenta} toner image is transferred in one step, so the {cyan, magenta} toner image is superimposed on the first row. In the third column, only the {cyan} toner image is transferred. When the printing paper 5 is conveyed by the width of the developing area, the fourth transfer is performed in the same manner. However, even in the fourth transfer, the {cyan, magenta} toner image is transferred in one process, so the second column is transferred. In the fourth column, only the {cyan} toner image is transferred.

Next, as shown in FIG. 9, in the fifth transfer, a {cyan, magenta, yellow} toner image is transferred in one step, so that the {cyan, magenta, yellow} toner image is in the first column. In the third column, a {cyan, magenta} toner image is superimposed. In the fifth column, only the {cyan} toner image is transferred. When the printing paper 5 is conveyed by the width of the development area, the sixth transfer is performed in the same manner. Even in the sixth transfer, {Cyan, Magenta, Yellow} is performed in one process.
, The second column overlaps the cyan, magenta and yellow toner images, the fourth column overlaps the cyan and magenta toner images, and the sixth column overlaps the cyan image. Is transferred.

Thereafter, as shown in FIG. 10, in the seventh transfer, the toner image of {cyan, magenta, yellow, black} is transferred in one process, so the first column is {cyan, magenta, yellow, black}. A color toner image is formed by the toner images of
A yellow toner image is superimposed. In the fifth column, the {cyan, magenta} toner image is superimposed, but in the seventh column, only the {cyan} toner image is transferred.

At the end of the transcription, the reverse path is just followed,
In the process, cyan, magenta, yellow, and black toner images were transferred, but cyan was missing, and magenta, yellow, and black were lost, and magenta was missing, resulting in yellow and black. Is only black.

After the above steps are repeated, as shown in FIG. 2, the printing paper 5 is intermittently fed to the fixing means 18 by the width of the developing area of each color. And printing paper 5
The fixing means 18 of the hot air fixing system for performing the fixing without contact with the
When the printing paper 5 on which the image has been transferred is conveyed and placed on the support member 19 of the fixing means 18, the hot air means 20 having a heat source 24 and a blower fan 25 therein is constructed as shown in FIG. To generate hot air.

The air flow generated by the blower fan 25 is blown against the heat transfer member 26 heated by the heat source 24, and flows into the heat transfer member 26 from the uppermost through hole 27. When flowing out of the through hole 27 of the uppermost layer, the air flow takes out heat from the periphery of the through hole 27 and diffuses when flowing out of the through hole 27 of the same uppermost layer, and successively removes heat from each layer of the heat transfer member 26. The printing paper 5 is robbed and becomes hot air, blows out from the lowermost through-hole 27 and sprays on the printing paper 5, melts the toner particles on the surface of the printing paper 5, and fixes it on the printing paper 5.

Finally, to briefly describe what is related to the "claim 2", it is not always necessary to use a photoreceptor for the toner image carrier, and there is a case where no exposing means is required. This is because a toner image can be formed by forming an electrostatic latent image with a heat source and developing it, or by blowing off a solid-coated toner image carrier with an air jet, as if carving a print. This is because a toner image can also be formed.

[0044]

As described above, according to the present invention, a toner image carried on a toner image carrier stretched by a plurality of rollers in a direction orthogonal to the transport direction of the printing paper is transferred to the printing paper by a transfer opposing roller. This is an orthogonal transfer type image forming apparatus that transfers the toner image transferred to the printing paper in a direction orthogonal to the transport direction of the printing paper, and fixes the toner image transferred to the printing paper. By providing a pore and sucking the printing paper through the pore, it is possible to prevent the printing paper from floating at the time of printing, and to absorb the printing paper without putting a break when the suction action on the printing paper is stopped. Is released, the printing paper is not tied to the transfer plate, and the printing paper can be transported smoothly.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an image forming apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a transfer process of the image forming apparatus according to the embodiment of the present invention;

FIG. 3 is a schematic diagram showing a state of forming a toner layer of a developing roller of the image forming apparatus according to the embodiment of the present invention;

FIG. 4 is a schematic view showing a state of forming a toner layer of a developing roller of the image forming apparatus according to the embodiment of the present invention;

FIG. 5 is a schematic diagram showing a transfer plate and a suction unit of the image forming apparatus according to the embodiment of the present invention;

FIG. 6 is a schematic diagram showing a transfer plate and a suction unit of the image forming apparatus according to one embodiment of the present invention.

FIG. 7 is a schematic diagram showing a transfer state of the image forming apparatus according to the embodiment of the present invention;

FIG. 8 is a schematic diagram showing a transfer state of the image forming apparatus according to the embodiment of the present invention;

FIG. 9 is a schematic diagram showing a transfer state of the image forming apparatus according to the embodiment of the present invention;

FIG. 10 is a schematic diagram illustrating a transfer state of the image forming apparatus according to the embodiment of the present invention;

FIG. 11 is a schematic diagram of a fixing unit of the image forming apparatus according to the embodiment of the present invention;

FIG. 12 is a schematic configuration diagram of a conventional image forming apparatus.

FIG. 13 is a perspective view illustrating a transfer process of a conventional image forming apparatus.

FIG. 14 is a schematic view illustrating a state of forming a toner layer of a developing roller of a conventional image forming apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 toner image carrier 2 support roller 3 displacement roller 4 transfer opposing roller 5 printing paper 6 charging means 7 developing means 7C developing means 7M developing means 7Y developing means 7B developing means 8 cleaning means 9 discharging means 10 exposure means 11 developing roller 12 toner Layer 13 Gap 14 Gap 15 Seal material 16 Seal material 17 Transfer plate 18 Fixing means 19 Support member 20 Hot air means 21 Transfer plate 22 Suction means 23 Pores 24 Heat source 25 Blower fan 26 Heat transfer member 27 Through hole

Claims (7)

[Claims] A transfer roller configured to transfer a toner image carried on a toner image carrier stretched by a plurality of rollers in a direction perpendicular to a transport direction of the print paper in a direction perpendicular to the transport direction of the print paper by a transfer opposing roller; This is an orthogonal transfer type image forming apparatus that transfers the toner image transferred to the printing paper and fixes the toner image onto the printing paper. An image forming apparatus, wherein: 2. A toner image bearing member comprising a photosensitive belt,
2. The image forming apparatus according to claim 1, further comprising: an exposing unit that exposes the toner image carrier based on the image signal; and a developing unit that develops the toner image carrier. 3. The transfer plate according to claim 1, wherein the fine holes of the transfer plate are provided in a transfer area of the transfer plate pressed by a transfer opposing roller via a toner image carrier.
The image forming apparatus as described in the above. 4. An image forming apparatus according to claim 3, wherein said developing means develops only a single color. 5. The transfer plate according to claim 1, wherein said transfer plate has a pore corresponding to a development region of each color formed on the toner image carrier among transfer regions of the transfer plate pressed by a transfer opposing roller via the toner image carrier. 4. The image forming apparatus according to claim 3, wherein the image forming apparatus is provided so as to be avoided. 6. The developing means includes at least cyan, magenta,
6. The image forming apparatus according to claim 5, wherein development is performed using three primary colors of yellow. 7. The developing means includes at least cyan, magenta,
6. The image forming apparatus according to claim 5, wherein development is performed using four primary colors of yellow and black.