JP2000264481A - Image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image forming device which reduces the luster degree of the final image and easily providing the final image easy to watch without making the device complicated. SOLUTION: A transfer material attitude and position control carrier means in front of a transfer part of a photosensitive drum 1 is formed, by providing a pair of upper/lower resist roller 41 and support roller 42, and resist gates 43a, 43b. By appearing/disappearing action of the gates 43a, 43b in front of a nip part Nrs of the rollers 41, 42, the diagonal movement of the tip is corrected by buckling of the transfer material (m) from the paper feed rollers 45a, 45b and the tip is threaded with the nip part Nrs by releasing the buckling, so that the transfer material (m) is carried to the transfer part on the photosensitive drum 1 side. To provide a final image outputted from the transfer part via a fixing device 8 with a prescribed low degree of luster, the surface of the resist roller 41 is set to a roughened surface, and the abutment force Pr with the support roller 42 is adjusted by taking into account the type of the transfer material (m) based on the selected luster degree, and the surface roughness is adjusted by roughing the surface of the transfer material (m) by the resist roller 41.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic image forming apparatus such as a copying machine, a printer, and a facsimile.

[0002]

2. Description of the Related Art Conventionally, in an electrophotographic apparatus of an image forming apparatus using an electrophotographic method, as shown in FIG. 10, the surface of a photosensitive drum 1 serving as an electrostatic latent image holding means is uniformly charged by a charger 2. Then, image exposure is performed with a laser beam or the like by the exposure optical device 3 to form an electrostatic latent image on the surface of the photosensitive drum 1, and the electrostatic latent image is developed by a developing device 4 using powder toner. The toner image, which is a visible image obtained by visualization, is transferred to the transfer material m by the transfer charger 5, and then the toner image on the transfer material m is fixed by the fixing device 8. The image (output image, final image) is obtained on the transfer material m. Generally, the output image is often a black monochromatic image.

[0003]

In recent years, some users and the like often prefer a high gloss image which has been favored in the past, but a high gloss image reflects light. It was found that there were cases where it was not preferred because it was hard to see and the eyes were tired.

In an image, an image having a higher gloss gives the impression that blackness is insufficient even with the same amount of toner. Therefore, it is attempted to increase the gloss of the image while maintaining the apparent density of the image. For example, it is necessary to increase the toner amount of the image. This is remarkable in an image in which the ratio of the solid black portion is large.

[0005] Regarding the glossiness of such an image, various technical proposals as described below have hitherto been made. That is,
In the heat fixing device, (i) a means for roughening the surface of the fixing roller, (ii) means for removing a release agent such as silicone oil transferred via the fixing roller from the transfer material, and (iii) transfer (Iv) changing the pressure contact force between the fixing roller and the pressure roller pressed against the fixing roller, (v) other than the measures (i) to (iv) A special transfer material roughening means is provided.

[0006] However, according to experiments and studies by the present applicant,
The method (i) has a problem that a sufficient decrease in gloss cannot be obtained for an image, and the methods (ii) to (v) have a problem that an image forming apparatus is complicated and mass productivity of the apparatus is reduced. there were.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming apparatus which makes it possible to obtain a final image which can be easily viewed by reducing the glossiness of the final image without complicating the apparatus.

[0008]

The above object is achieved by an image forming apparatus according to the present invention. In summary, the present invention provides:
An electrostatic latent image carrier on which a toner image is formed, and a transfer material on which the toner image is transferred on the image carrier are adjusted and sent to the image carrier by adjusting its posture and position. An image forming apparatus comprising: a transfer member having a pair of conveying members sandwiching the toner image, wherein the transfer material onto which the toner image has been transferred is discharged as a final image after fixing the toner image; The transfer member on the contact side of the transfer member, which contacts the surface of the transfer material on which the toner image is transferred, is a roller having a roughened surface.

According to the present invention, the roller has a surface roughness Rz of 50 μm or more. The contact force of the roller on the transfer-side surface of the transfer material can be changed. A gloss selecting unit for selecting a gloss of the final image, wherein the contact force of the roller is changed according to the gloss selected by the selecting unit. The image processing apparatus further includes a glossiness selection unit that selects the glossiness of the final image, includes a plurality of types of transfer materials as the transfer material, and changes the type of the transfer material according to the glossiness selected by the selection unit. The other conveying member of the pair of conveying members is an elastic roller.

[0010]

Embodiments of the present invention will be described below in more detail with reference to the drawings.

Embodiment 1 FIG. 1 is a schematic diagram showing an embodiment of an image forming apparatus according to the present invention, and FIG. 2 is a posture of a transfer material as a portion for feeding a transfer material to an electrostatic latent image carrier. It is a figure which expands and shows a position control conveyance part.

The image forming apparatus includes a photosensitive drum 1 as an electrostatic latent image holding means. Examples of the electrostatic latent image carrier include a so-called xerographic photosensitive member that forms an electrostatic latent image by the Carlson process, and a surface that forms an electrostatic latent image by the NP process described in JP-A-42-23910. And a photoreceptor having an insulating layer.
The photosensitive drum 1 according to the present embodiment has an insulating layer made of a material mainly composed of amorphous silicon provided on a drum base. The photosensitive drum 1 had a diameter of 80 mm and was used by rotating at a peripheral speed of 265 mm / sec in the direction of arrow A.

Around the photosensitive drum 1, a corona charger 2 as a primary charging means, an exposure optical device 3, a developing unit 4, a transfer charger 5, a separation charger 6, and a drum cleaner 7 are provided. The fixing device 8 is provided on the side of the transfer belt 9 on the side of the transfer belt 9, and the transfer material posture position control transfer section 40 and the like are provided on the side of the developing device 3.

The corona charger 2 has a grid. In this embodiment, the corona charger 2 uniformly charges the surface of the photosensitive drum 1 to a potential of 400 to 440V. A semiconductor laser having a wavelength of 700 μm is used for the exposure optical device 3 as an exposure unit, and the potential of the charged surface of the photosensitive drum 1 is reduced to at least 50 V by image exposure of the optical device 3.
An electrostatic latent image was formed on the surface of the photosensitive drum 1.

The developing device 4 as a developing means includes a developing container 10 containing a magnetic toner. An opening 11 of the developing container 10 facing the photosensitive drum 1 is made of a nonmagnetic metal cylinder as a developer carrier. The developing sleeve 12 has an outer diameter of 24.5 mm. After the surface of the developing sleeve 12 is roughened by a blasting process of spraying spherical glass particles, a coating layer having a volume resistivity of 100 Ωcm or less containing a phenol resin, crystalline graphite, carbon or the like is formed to a film thickness of 10 to 14 μm. Thus, the surface is finished to have a center line average roughness Ra of 0.70 to 0.90 μm.

Inside the developing sleeve 12, a roller-shaped permanent magnet 13 made of ferrite is fixedly arranged. The developing sleeve 12 carries the toner in the developing container 10 on the surface thereof by the magnetic force of the magnet 13, and is moved in the direction of the arrow B by about 39 degrees by a motor (not shown) via a gear and clutch (not shown).
The photosensitive drum 1 is rotated at a peripheral speed of 0 mm / sec, and transports the carried toner toward a developing area facing the photosensitive drum 1.

A magnetic blade 14 as a toner restricting means is disposed on the top of the developing sleeve 12 with a gap of 180 to 240 μm from the developing sleeve 12. The tip of the blade 14 is located at a position 5 ° downstream of the N1 pole located substantially at the top of the plurality of magnetic poles of the magnet 13 in the rotation direction of the developing sleeve 12. Blade 14
, Magnetically regulates the magnetic toner on the developing sleeve 12 conveyed to the developing area in cooperation with the N1 pole to form a thin layer of the toner on the developing sleeve 12.

The developing sleeve 12 is held in a non-contact state with the photosensitive drum 1 with a gap of 160 to 230 μm in the developing area.
An electrostatic latent image on the photosensitive drum 1 is developed with the toner conveyed to the developing area by applying a developing bias on which the C voltage is superimposed. The latent image is visualized as a toner image by development.

A corona charger with a shield is used for the transfer charger 5, and a discharge wire 5a of the charger is connected to a discharge wire 5a.
The transfer material m conveyed to the photosensitive drum 1 by the transfer material posture position control conveyance unit 40 by applying a variable DC current of 0 μA.
The toner image on the photosensitive drum 1 was transferred onto the top. The transfer material m to which the toner image has been transferred is separated from the photosensitive drum 1 by the separation charger 6 and is fixed by the transport belt 9 to the fixing device 8.
After fixing the toner image onto the transfer material m, the toner image is discharged out of the apparatus as a final image.

After the transfer, the photosensitive drum 1 is cleaned and removed by a drum cleaner 7 from the transfer residual toner remaining on the surface thereof, and then subjected to the next image formation. The cleaner 7 includes a rubber blade 15 and a magnet roller 16 in contact with the photosensitive drum 1, a waste toner container 17 to which these are attached, and a waste toner unloading unit (not shown).

As shown in FIG. 4, the fixing device 8 as fixing means has two upper and lower rollers 20 and 21 which sandwich the transfer material m. Of these, the upper roller 20 is a fixing roller that comes into contact with the toner image on the transfer material m.
The annular inner layer 22 made of an aluminum alloy is covered with a coating layer 23 made of a material mainly composed of silicone rubber to a thickness of 3 mm to form a 60 mm diameter. Inner layer 2 of fixing roller 20
An infrared lamp 24 is provided at the center of the second ring. The surface temperature of the fixing roller 21 is detected by a temperature sensor 25 disposed on the surface, and the lamp 24 is turned on and off by a temperature control unit (not shown), whereby
It is controlled at 175 ° C.

The lower roller 21 is a pressure roller 21 which is in contact with the back side of the transfer material m opposite to the toner image side. This pressure roller 21 is formed by forming an aluminum alloy annular inner layer 26 with a fluorine resin compound. And a covering layer 27 of a material mainly composed of

The fixing roller 20 and the pressure roller 21
0N (Newton) load, pressure contact, width 6.5
mm nip is formed. Both rollers 20, 21
Are rotated at a peripheral speed of 265 mm / sec together with the nip portion formed.

The fixing roller 20 is provided with claw-like transfer material peeling members 28 at five locations in the longitudinal direction, and a film-like cleaning member 29 is in contact with the whole area in the longitudinal direction. The cleaning member 29 is made of a nonwoven fabric impregnated with silicone oil or the like, and removes toner and the like attached to the surface of the fixing roller 20 by fixing. The cleaning member 29 is gradually taken up from the unwind roller 30 to the take-up roller 31 as the fixing progresses, and the contact surface with the fixing roller 20 is updated.

The transfer material attitude / position control / transport unit 40
As shown in FIG. 2, a transfer section where the photosensitive drum 1 and the transfer charger 4 face each other, and a pair of upper and lower paper feed rollers 45 in front of the transfer section.
a, a pair of upper and lower registration rollers (registration rollers) which are formed between the transfer rollers a and 45b and constitute transfer material posture position control and conveyance means (registration apparatus).
41, a support roller 42, and a registration gate (registration gate) 43.

The registration roller 41 and the support roller 42 are located immediately before the transfer section, and rollers 41 and 42 are provided between the rollers 41 and 42 and the paper feed rollers 45a and 45b.
A pair of upper and lower paper feed guides 44a and 44b protruding from the upper end are extended. The portion of the lower guide 44b near the paper feed roller 45b is curved downward. Resist gate 43
Is provided before the registration roller 41 and the support roller 42 and below the lower transfer material guide 44b. The tip 43a of the resist gate is formed in a hook shape, and its base is fixed to the rotation shaft 43b, and the hook-shaped tip 43a is rotated by rotation of the registration gate 43 around the rotation shaft 43b.
The registration roller 41 and the support roller 42 are allowed to protrude and retract before the nip portion Nrs.

As shown in FIG. 3, the shaft portions at both ends of the registration roller 41 have rod-shaped bearing members 46 disposed at both ends.
46 rotatably supported. The registration roller 41 engages with the support roller 42 by fitting each bearing member 46 into a long hole 47a of a U-shaped support member 47 and movably supporting the bearing member 46 in the direction C in the direction of the long hole 47a. The contact roller 42 is in contact with the support roller 42 in such a manner that the contact force (referred to as Pr) can be changed.

A motor 48 of a driving means is attached to one end of the shaft of the registration rollers 41, and one end of the shaft of the support roller 42 is connected to the motor 48 via a gear train (not shown). The registration roller 41 (outer diameter 12 mm) is rotated at 421 rpm by the motor 48 so that the peripheral speed is 13.22 cm / min.
The support roller 42 (outer diameter 20 mm) is rotationally driven at a rotation speed of 253 rpm.

According to the present invention, the registration roller 41 is formed of a non-magnetic metal roller, so that the glossiness of the final image can be adjusted by adjusting the surface roughness of the transfer material m (referred to as Rm). Therefore, the surface is roughened by thermal spraying or blasting. The surface roughness of the registration roller 41 is a ten-point average roughness Rz, preferably 10 μm or more, more preferably 50 μm or more.

In the present embodiment, the resist roller 41 is made of a non-magnetic metal roller having an outer diameter of 12 mm, and a stainless steel sprayed material having excellent wear resistance is applied to the surface of the roller.
Arc spraying so that the surface roughness Rz = 50-5
It is 5 μm. The support roller 42 is made of an elastic roller, and in this embodiment, a 1 mm thick E
PDM rubber was coated to form an outer diameter of 20 mm.

In the present specification, the surface roughness (ten-point average roughness) Rz was measured using a surface roughness meter “Surfacoder SE-3300H type” manufactured by Kosaka Laboratory, with a cutoff of 0.8 mm. , Measuring distance 8.0mm, measuring speed 0.5m
m / sec.

The registration operation of the transfer material m will be described with reference to FIG.

In FIG. 2, the registration roller 41 is constantly rotating. The transfer material m is supplied to a paper feed roller 45 (45a,
5b), the leading end (lead edge) of the transfer material m comes into contact with the hook-shaped leading end portion 43a of the registration gate 43 which is rotated upward in synchronization with this, and the guide 44
Buckles into a plurality at the portions a and 44b to form a multiple buckle. In this state, the paper feed roller 45 stops and the transfer material m is stopped, and the skew (skew) of the transfer material m, that is, the posture and the position are corrected. Next, at the timing when the registration matches the toner image on the photosensitive drum 1, the registration gate 43 is moved to the lower position, that is, the release position. As a result, the leading end of the transfer material m is pressed against the nip portion between the registration roller 41 and the support roller 42 by the force of the buckle, is bitten by the rollers 41 and 42, is conveyed to the photosensitive drum 1 side, and is transferred to the transfer portion. Supplied.

At this time, according to the present invention, since the surface of the registration roller 41 is made rough, as described later,
By adjusting the contact force Pr with the support roller 42, the surface of the transfer material m can be roughened by the registration roller 41 to adjust the surface roughness (referred to as Rm) to a desired value. Thus, it is possible to obtain a desired glossiness in the final image output through the step 8.

FIG. 5 shows a top view of the image forming apparatus of FIG. As shown in FIG. 5, an operation plate 101 is disposed at the front of the upper surface of the image forming apparatus, and a liquid crystal panel 102 in the operation plate 101 switches and displays operation contents.

According to the present invention, the glossiness of the final image can be selected by the user or the like. As shown in FIG. 6, the display of the liquid crystal panel 102 is switched to the glossiness display, and the glossiness of the final image is changed. The degree can be selected. In addition,
In the glossiness display of the liquid crystal panel 102 in FIG.
The “T” button display means “1”, which is the lowest gloss level among the four selectable gloss levels, and the gloss level increases by “1” by one as the lower button display changes. Thus, in the display of the button "GLOSSY", the highest gloss level [4] is obtained.

Regarding the type of transfer material, of several types of transfer materials stored in a plurality of paper cassettes of the image forming apparatus, which type of transfer material is appropriate to use in relation to glossiness The type of transfer material is automatically selected by the image forming apparatus, but the type of transfer material can also be selected by a user or the like. As shown in FIG. Switch to the transfer material selection display,
The type of transfer material to be used can be selected. The contact force Pr of the registration roller 41 to the transfer material is set by the image forming apparatus automatically controlling.

The contact force Pr of the registration roller 41 is controlled based on the relationships shown in Tables 1 to 4 below by selecting the glossiness of the final image and considering the type of the transfer material m.

[0039]

[Table 1]

[0040]

[Table 2]

[0041]

[Table 3]

[0042]

[Table 4] For example, Table 1 shows that among four selectable gloss levels,
This is a measurement result of the type and contact force Pr of the transfer material when the lowest glossiness level “1” is selected, and the glossiness of the finally obtained image. Tables 2, 3, and 4 show cases where gloss levels "2", "3", and "4" were selected, respectively. Table 1
In ~ 4, the unit GGU of the final gloss result is the Gardner gloss unit.

The image forming apparatus responds to the user's selection of, for example, the gloss level “1” by using the liquid crystal panel 1 shown in FIG.
As shown in FIG. 02, one of the several kinds of stored transfer materials “A3 RECICLOX 64G” is automatically selected as the optimum one, and regardless of this, the user does not
As shown in FIG. 0, if another type of transfer material is intentionally selected for the liquid crystal panel 102, for example, “A3 BDM774 80G”, the image forming apparatus determines that the desired gloss level “1” is used for the other type of transfer material. When it is determined that is not possible, the button display of “MAT” corresponding to the gloss level “1” is turned off, as shown in FIG.

When a low glossiness is required, the image forming apparatus increases the contact force Pr of the registration roller 41 and adjusts the roughness of the transfer material surface by the registration roller.
The surface is controlled to be rough, and conversely, when high glossiness is required, the contact force Pr is reduced to adjust the roughness so that the surface of the transfer material is smooth. This is because the surface roughness Rm of the transfer material is a factor that has the greatest influence on the glossiness of the final image of the transfer material, and the glossiness of the transfer material having a rough surface texture decreases, The glossiness increases with a smooth transfer material.

The image forming apparatus of this embodiment has a surface roughness Rm of about 50 types of transfer materials (thin paper, thick paper, plain paper, recycled paper, OHP film, etc.) distributed on the market at the time of factory shipment. The information is registered in a storage device (not shown), and a user or the like can select a name or the like described on the packaging of the transfer material, and furthermore, it is considered that a new type of transfer material can be handled.

FIG. 8 shows a display on the liquid crystal panel 102 in a state where the selection of the gloss level has been completed and the copying operation has been enabled. The gloss level selected by the user or the like is “3”, and the type of transfer material selected by the image forming apparatus is “A3 Q
UARINT 75G "is displayed.
After the user confirms these conditions, the copy start button 1
When the user touches 03, the copying operation is started.

In the image forming apparatus of this embodiment, the selectable glossiness of the final image is generally in the range of 2 to 45 GGU.
The gloss of the final image was measured by BYK-Gardn.
The measurement was performed within one minute after the final image was discharged out of the image forming apparatus using a gloss meter II manufactured by ER.

Table 5 shows the results in this example. Table 5
In the above, the toner consumption is a value under the condition that the glossiness is set to be the minimum and a specific image composed of a photograph and text is copied as an original using an A4 size transfer material. . The apparatus cost is the cost of the image forming apparatus, and is a relative value when the cost of the image forming apparatus in Comparative Example 1 to be described later is set to 1. The running cost of the apparatus refers to the cost of the developer and replacement parts, the labor cost of maintenance work, and the like, out of the maintenance cost per A4 size image output page of the image forming apparatus.

[0049]

[Table 5] As shown in Table 5, according to the first embodiment, excellent results were realized in all respects of the glossiness of the final image, the toner consumption, the cost of the image forming apparatus, and the running cost.

Embodiment 2 This embodiment is different from Embodiment 1 in that the contact force Pr of the registration roller 41 is not controlled and is kept at a constant value. Table 5 shows the results.

As shown in Table 5, according to the second embodiment, excellent results were realized, particularly in terms of simplification of the image forming apparatus and reduction in cost.

Embodiment 3 This embodiment is different from Embodiment 2 in that there is no means for selecting the glossiness of the final image by the user or the like, and there is no automatic selection of the transfer material. Table 5 shows the results.

As shown in Table 5, according to the third embodiment, similarly to the second embodiment, an image forming apparatus excellent in simplification of the apparatus and reduction in cost was realized.

Embodiment 4 This embodiment is different from Embodiment 1 in that although the glossiness of the final image is selected by the user or the like, the transfer material is not automatically selected according to the glossiness. Therefore, the user or the like must select an appropriate transfer material according to the glossiness of the final image selected by the user.

As shown in Table 5, also according to the fourth embodiment, an image forming apparatus excellent in simplification of the apparatus and reduction in cost was realized.

Embodiment 5 In this embodiment, the surface roughness Rz of the registration roller 41 is 10
１２12 μm is different from the first embodiment. The surface of the resist roller was roughened by blasting by spraying irregular fine particles such as alumina or regular fine particles such as glass.

As shown in Table 5, also according to the fifth embodiment, an image forming apparatus excellent in simplification of the apparatus and reduction in cost was realized.

Examples 6 to 10 In these Examples 6 to 10, as shown in Table 5, the surface roughness (Rz) of the registration roller 41 is 15 μm ≦ surface roughness ≦ 50 μm. And different. The surface roughness of these resist rollers was adjusted by changing the conditions for thermal spraying using a stainless steel thermal spray material.

As shown in Table 5, according to Examples 6 to 10, although the decrease in glossiness was slightly inferior, in other respects, it was superior to Comparative Examples 1 and 2 described below, which were the prior art. .

COMPARATIVE EXAMPLE 1 Comparative Example 1 is a conventional technique, in which the surface of the registration roller 41 is not subjected to a special roughening treatment, but is different from Example 1.

As shown in Table 5, in Comparative Example 1, the glossiness of the final image obtained was at least 20 GGU, and the toner consumption was considerably higher than in Examples 1 to 10. Further, the cost and running cost of the apparatus are high.

COMPARATIVE EXAMPLE 2 Comparative Example 2 is also a conventional technique. Instead of making the registration roller 41 rough, a roller in contact with the transfer material transfer side surface is provided on the transfer material transport path from the transfer material cassette to the transfer portion. This embodiment differs from the first embodiment in that a pair of transport rollers whose surfaces are roughened are provided.

As shown in Table 5, in Comparative Example 2, the cost and running cost of the apparatus were poor, and exceeded Comparative Example 1.

As can be seen from the above embodiment, according to the present invention, a gloss of at least 12 GGU can be easily obtained as the gloss of the final image.

As described above, the present invention has been described with reference to the specific embodiments. However, the present invention is not limited thereto, and various changes and modifications can be made. For example, for the developer, a one-component developer,
Regardless of the type of the two-component developer, the toner may be a magnetic toner or a non-magnetic toner, and may be a positively chargeable toner or a negatively chargeable toner. As for the electrostatic latent image carrier, not only a drum-shaped photoconductor (photosensitive drum) but also a belt-shaped photoconductor (photosensitive belt) may be used. Also, the primary charging means and the transfer charging means may be in contact with the image carrier. Further, the fixing means may use pressure, ultraviolet light, or the like, or may be of a belt type instead of a roller type.

[0066]

As described above, according to the present invention,
Without complicating the image forming apparatus, it is possible to reduce the glossiness of the final image and obtain a final image which is easily viewable,
Further, the consumption of the developer was reduced, and the cost and running cost of the apparatus were also reduced.

[Brief description of the drawings]

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

FIG. 2 is an enlarged view of a transfer material posture position control transport unit provided in the image forming apparatus of FIG. 1;

FIG. 3 is a perspective view illustrating a registration roller, a support structure thereof, and a support roller installed in a transport unit in FIG. 2;

FIG. 4 is a sectional view illustrating a fixing device in the image forming apparatus of FIG. 1;

FIG. 5 is a plan view illustrating an upper surface of the image forming apparatus of FIG. 1;

FIG. 6 is a diagram showing a display on a liquid crystal panel of an operation plate provided at a front upper portion of FIG. 5;

FIG. 7 is a diagram showing another display of the liquid crystal panel.

FIG. 8 is a diagram showing still another display on the liquid crystal panel.

FIG. 9 is a diagram showing still another display on the liquid crystal panel.

FIG. 10 is a diagram showing still another display on the liquid crystal panel.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 photosensitive drum 5 transfer charger 8 fixing device 40 transfer material attitude position control transport unit 41 registration roller 42 support roller 43 registration gate 44a, 44b transfer material guide 45a, 45b paper feed roller 101 operation plate 102 liquid crystal panel m transfer material

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazushige Nishiyama 3- 30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (72) Inventor Fumitake Hirobe 3- 30-2 Shimomaruko, Ota-ku, Tokyo Within Canon Inc. (72) Inventor Junichi Nakayama 3-30-2 Shimomaruko, Ota-ku, Tokyo F-term within Canon Inc. (reference) 2H072 CA01 JA02 JC07 3F049 CA02 DA12 DA19 LA02 LA05 LA07 LB03

Claims (6)

[Claims] 1. An electrostatic latent image carrier on which a toner image is formed, and a transfer material onto which the toner image is transferred on the image carrier are adjusted in their posture and position and sent to the image carrier. An image forming apparatus comprising: a transfer member having a pair of conveying members sandwiching the transfer material from above and below, the transfer material having the toner image transferred thereon is discharged as a final image after fixing the toner image; An image forming apparatus, wherein a transport member on a contact side of the pair of transport members that contacts a surface of the transfer material on which a toner image is transferred is a roller having a roughened surface. . 2. The roller has a surface roughness Rz of 50 μm.
The image forming apparatus according to claim 1, wherein: 3. The image forming apparatus according to claim 1, wherein a contact force of the roller on a surface of the transfer material on the transfer side is changeable. 4. The image forming apparatus according to claim 3, further comprising a glossiness selection means for selecting a glossiness of the final image, wherein the contact force of the roller is changed according to the glossiness selected by the selection means. 5. A transfer device according to claim 1, further comprising: a glossiness selecting means for selecting a glossiness of the final image; and a plurality of types of transfer materials as the transfer material, wherein a type of the transfer material is selected according to the glossiness selected by the selection means. 3. The image forming apparatus according to claim 1, wherein the image forming apparatus is changed. 6. The image forming apparatus according to claim 1, wherein the other conveying member of the pair of conveying members is an elastic roller.