JPH1091004A - Developing device for wet image forming apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To individually make the fine adjustment of gaps between the various kinds of the rollers of a developing system and a photoreceptor and to make the fine adjustment of the gaps by excellent operability and at a low cost by providing a shaft stay supporting a developing roller and a squeeze roller and an adjustment mechanism changing a distance for the center axis of the photoreceptor at a developing system roller stay. SOLUTION: At the developing roller 2 and the squeeze roller 3, both ends of respective shafts 9 and 10 are respectively and freely rotatably supported by a pair of the shaft stays 11 and 12 provided on the peripheral surface of the developing system roller stay 6. The adjustment mechanisms 4 are respectively provided at the shaft stays 11 and 12, so that the position adjustment of both ends of the shafts 9 and 10 is made possible for each of the shaft stays 11 and 12. Thus, the developing roller 2 and the squeeze roller 3 are attached to the developing system roller stay 6 through the shaft stays 11 and 12 so as to unitize, and are displaced by using the adjustment mechanisms 4. Thus, the fine adjustment of the gaps between the photoreceptor 1, the developing roller 2 and the squeeze roller 3 is individually made.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a developing device for a wet image forming apparatus, and more particularly to a developing device capable of adjusting a gap between a developing roller member such as a developing roller and a squeeze roller and a photosensitive member.

[0002]

2. Description of the Related Art A wet type image forming apparatus is provided with a developing roller, a squeeze roller, a set roller and the like, and a plurality of these rollers constitute a developing roller. The gap between the developing system roller and the photoconductor is determined by the difference between the diameter of each roller and the bearing disposed at the end of each roller, and the level difference between the photosensitive layer of the photoconductor and the end of the photoconductor where the bearing contacts. Is determined by

[0003]

With such a configuration, it is difficult to finely adjust the gap between the photosensitive member and the developing system roller because the gap depends on the dimensional accuracy of each roller diameter. Even if the distance between each roller and the photoreceptor is made constant, there is an error in the production of each roller, and if this gap is made constant, the production accuracy of each roller must be increased. In addition, since such a roller is worn as it is used, a gap between the roller and the photosensitive member is opened even if the roller accuracy is increased. SUMMARY OF THE INVENTION It is a main object of the present invention to provide a developing device capable of individually fine-adjusting the gaps between various rollers of a developing system and a photoconductor. The aim is to be able to do it at low cost.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides various types of developing systems in a wet image forming apparatus in order to be able to individually finely adjust the gaps between the various rollers of the developing system and the photosensitive member. The developing system roller stay is provided with a shaft stay that supports the developing roller and the squeeze roller that constitute the roller, and an adjustment mechanism that changes the distance between the shaft stay and the central axis of the photoconductor.

In the present invention, the photosensitive member is formed in a drum shape, and at both ends of the drum-shaped photosensitive member, a developing roller having a bearing structure having the same central axis as the photosensitive member and a positioning member for a squeeze roller are provided. An adjusting mechanism for changing the distance between the axis of the squeeze roller and the positioning member is provided.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A developing device according to the present invention forms a toner image by adhering toner dispersed in a liquid to an electrostatic latent image on a photoreceptor by a developing roller disposed near the photoreceptor. A squeeze roller installed in the vicinity of the photoreceptor at an interval, applied to a wet image forming apparatus that removes unnecessary liquid after development, and an axial stay that supports the shafts of the development roller and the squeeze roller; An adjusting mechanism for changing the distance between the shaft stay and the central axis of the photoconductor is provided in the developing roller stay. As described above, by providing the adjusting mechanism for changing the distance between the shaft stay and the center axis of the photoconductor, the distance between the developing roller and the squeeze roller and the photoconductor can be adjusted by the operation of the adjusting mechanism.

The developing roller stay may have a bearing structure rotatably supported on the same central axis as the photosensitive member formed in a drum shape. With such a configuration, since the rotation center axis of the photoconductor and the developing roller stay are maintained at a constant interval, when adjusting the interval between the developing roller and the squeeze roller and the photoconductor by the adjusting mechanism, more accurate Can be adjusted well.

The developing roller stay may be brought into contact with the end of the drum-shaped photosensitive member via a rotating member. In this case, the rotating member includes a bearing and a roller, and the contact resistance between the photosensitive member and the developing roller stay is reduced by the action of the rotating member.

According to the present invention, positioning members for a developing roller and a squeeze roller having a bearing structure having the same central axis as the photosensitive member are provided at both ends of the drum-shaped photosensitive member. May be provided with an adjusting mechanism for changing the distance between the two. According to such a configuration, the distance between the axial center of the developing roller and the squeeze roller and the positioning member can be changed, so that the distance between the photosensitive member and each roller can be adjusted.

When the adjusting mechanism is constituted by a spacer, the distance between the photosensitive member and each roller can be easily adjusted according to the thickness of the spacer. When the adjusting mechanism is constituted by a micrometer, an axial stay supporting each roller is swingably supported at a base end thereof, and a micrometer is mounted on the other end thereof. With such a configuration, the other end is swung about the base end by the micrometer, and the distance between each roller and the photoconductor can be precisely adjusted.

[0011]

【Example】

(First Embodiment) As shown in FIGS. 1 and 2, a developing device according to a first embodiment forms an electrostatic latent image formed on a drum-shaped photosensitive member 1 by an exposure device (not shown) in a liquid. Roller 2 for adhering toner dispersed in the toner, squeeze roller 3 for removing unnecessary liquid after development, and adjusting mechanism 4 for adjusting the distance between the surface of developing roller 2 and squeeze roller 3 and the surface of photoconductor 1 And The squeeze roller 3
The developing roller 2 is provided downstream of the developing roller 2 in the rotation direction of the photosensitive member 1 as indicated by an arrow A in parallel with the developing roller 2.

A central shaft 5 for rotatably supporting the photosensitive member 1 is rotatably supported by a base of a device (not shown), and a pair of developing roller stays 6 are provided on the side surfaces 1a and 1b of the photosensitive member 1. Is mounted via a bearing 7. The developing system roller stay 6 is positioned by a pair of pins 8 (only one is shown) fixed to the base of an image forming apparatus (not shown). The peripheral surface 6a of the developing roller stay 6 is arranged in line with a photoconductor layer of the photoconductor 1 (not shown).

As shown in FIG. 3, the developing roller 2 and the squeeze roller 3 have bearings 9 and 10 at opposite ends thereof on a pair of shaft stays 11 and 12 provided on a peripheral surface 6a of a developing roller stay 6 as shown in FIG. Each is rotatably supported via 9A and 10A.

The shaft stay 11 has its swing center on the downstream side in the rotation direction of the photosensitive member 1, and the shaft stay 12 has its swing center on the upstream side in the rotation direction of the photosensitive member 1. The roller 2 and the squeeze roller 3 are supported swingably with respect to the photoreceptor 1, respectively. The adjustment mechanism 4
Positions (heights) at both ends of the shafts 9 and 10 are provided on the shaft stays 11 and 12, respectively.
Adjustment is possible.

The shaft stays 11 and 12 are respectively attached to shafts 15 and 16 supported by flanges 13 and 14 fixed to the peripheral surface 6a of the developing roller stay 6, and have base ends 11a and 12a.
a is swingably supported. The other ends 11b, 1 of the shaft stays 11, 12 located on the side opposite to the base ends 11a, 12a.
The adjustment mechanisms 4 are respectively arranged in 2b. At the other ends 11b and 12b, the other ends 17b and 18b of leaf springs 17 and 18 whose one ends 17a and 18a are fixed to the peripheral surface 6a with screws 19A and 19B are locked.
To the peripheral surface 6a (photoconductor 1).
That is, small gaps L1 and L2 are formed between the outer peripheral surface 1c of the photoconductor 1 and the developing roller 2 and the squeeze roller 3, respectively.

As the adjusting mechanism 4, a micrometer mechanism is used. As shown in FIG. 4, the micrometer mechanism includes a spindle 40 in which one end 40a is in contact with the peripheral surface 6a of the developing roller stay 6 and a micrometer screw 41 is cut in the other end 40b. A cylindrical portion 43 fixed to the end 11b and having a female screw 42 screwed into the micrometer screw 41 therein;
It is composed of a simple 44 that is screwed with the cover 1 and covers the cylindrical portion 43. In this mechanism, when the simple 44 is rotated, the spindle 40 can be advanced and retracted by a very small amount with respect to the cylindrical portion 43. Here, clockwise simple 4
When the spindle 4 is rotated, the spindle 40 projects from the cylinder 43 toward the peripheral surface 6a, and when the spindle 40 is rotated counterclockwise, the spindle 40 retracts into the cylinder 43.

According to such a configuration, when the simple 44 is rotated clockwise to gradually project the one end 40a of the spindle 40 from the cylindrical portion 43, the other ends 11b, 11b of the shaft stays 11, 12 in FIG. 12b is a leaf spring 17,
18 swings upward around the shafts 15 and 16 against the urging force of the actuator 18. Then, when the simple 44 is rotated counterclockwise to retract the one end 40a into the cylindrical portion 43, the other ends 11b and 12b of the shaft stays swing downward.

Therefore, the distance between the shaft stays 11 and 12 in FIG. 1 and the central axis 5 of the photosensitive member 1 can be changed by a very small amount, and the outer circumferences of the developing roller 2 and the squeeze roller 3 and the photosensitive member 1 can be changed. Fine adjustment of the gaps L1 and L2 with the outer peripheral surface 1a can be performed easily and accurately. Further, since the adjusting mechanism 4 is provided for each stay, the distance between the developing roller 2 and the squeeze roller 3 in the axial direction can be adjusted, and the developing roller 2 and the squeeze roller 3 can be individually adjusted.

(Second Embodiment) FIGS. 5 and 6 show an example in which the developing roller stay in the first embodiment has a bearing structure. Members having the same functions as those in the first embodiment are denoted by the same reference numerals, including the following embodiments, and detailed description is omitted.

The developing roller stay 20 includes an inner case 21 and an outer case 22. The inner case 21 and the outer case 22 have a bearing structure via a ball (not shown), and can rotate relative to each other. As shown in FIG. 7A, the inner case 21 is adapted to be taperedly fitted to the photoreceptor 1 so as to rotate integrally with the photoreceptor 1. The outer case 22 is fixed with a pair of pins 8 as shown in FIG. As shown in FIG. 7B, positioning pins 23 and 24 are protruded from the inner case 21 and grooves 25 and 26 are provided on the photoconductor 1 side so that the pins 23 and 24 are engaged. To rotate integrally with the photoconductor 1.

On the peripheral surface 22a of each outer case 22, shafts 9 and 10 of the developing roller 2 and the squeeze roller 3 are supported, and a shaft stay 11 and a shaft stay 12 provided with an adjusting mechanism 4 are swingable. Supported, leaf springs 17, 18
To give a swing training toward the peripheral surface 22a. Here, the spindle 40 of the adjustment mechanism 4 is,
2a.

According to such a configuration, when each adjusting mechanism 4 is operated, the distance between the shaft stays 11 and 12 and the center of the photosensitive member 1 can be changed. 2 and the gap between the squeeze roller 3 and the outer peripheral surface 1c of the photoconductor 1 can be easily and accurately adjusted (see FIG. 3). Further, since the adjusting mechanism 4 is provided for each of the stays, the gap between the photosensitive member 1 and both ends of the developing roller 2 and the squeeze roller 3 in the axial direction can be adjusted, and the developing roller 2 and the squeeze roller 3 can be individually adjusted. Can be adjusted.

(Third Embodiment) FIGS. 8 and 9 show this embodiment.
As shown in FIG. 3, the shaft stays 11 and 12 supporting the shafts 9 and 10 of the developing roller 2 and the squeeze roller 3 and having the adjusting mechanism 4 respectively are connected to the developing roller stay 3.
0.

The photosensitive member 100 in this embodiment is formed in the shape of a drum, and its central portion in the axial direction is an image forming portion 101 and both sides thereof are non-image forming portions 102. The photosensitive member 100 rotates integrally with the central shaft 5. . Developing roller 2 here
And the width W of the squeeze roller 3 is
1, the width W of the developing roller 2 and the squeeze roller 3 may be set to be wide.

The developing roller stay 30 is supported by the pressing and supporting means 37 so as to be centered on the center axis 5 and is arranged to face the non-image forming portion 102. 8 and 10,
Only one developing roller stay 30 is shown. The developing roller stay 30 is formed in an arch shape centered on the central axis 5, and has one end 11 a, 12 a of the axis stay 11 and the axis stay 12 on its peripheral surface 30 a.
Leaf springs 17 and 18 that swingably support the other ends 11b and 12b and give the other end 11b and 12b the swinging behavior toward the peripheral surface 30a.
Are fixed with screws 19A and 19B.

The pressing support means 37 has one end 38a
It comprises a lever 38 and a coil spring 39 which are rotatably supported by the apparatus main body 1D at c.
The other end 38 b of the lever 38 is rotatably provided on the developing roller stay 30. A coil spring 39 is provided between the lever 38 and the apparatus main body 1D in a state where the coil spring 39 is shorter than the natural length.
Is pressed toward the photoconductor 100.

FIG. 1 shows the inside of the developing roller stay 30.
As shown in FIG. 0, bearings 34, 35, 36 constituting a rotating member supported by the shafts 31, 32, 33 are supported. The bearings 34, 35, 36 are disposed on both sides of the developing roller 2 and the squeeze roller 3 and between the two rollers, and their peripheral surfaces 34a, 35a, 36a project from the inner peripheral edge 30c of the developing roller stay 30, respectively. , Non-image forming portion 102, that is, outer peripheral surface 1 of photoconductor 100
00c. Bearings 34, 35, 36
Are set so as not to contact the inner surface 30b of the developing roller stay 30. Spindle 4 of adjustment mechanism 4
0 indicates that when the simple 44 is rotated, the circumference 30
It is made to move very slightly toward a.

According to such a configuration, when the spindle 40 is slightly advanced and retracted by rotating the simple 44 shown in FIG. 10, the other ends 11b and 12b are opposed to the urging force of the leaf springs 17 and 18 depending on the rotating direction. It is swung about the shafts 15 and 16 so as to approach or separate from the peripheral surface 30a. Therefore, the shaft stay 11 and the shaft stay 12
Between the developing roller 2 and the squeeze roller 3 and the photosensitive member 100 can be changed.
Fine adjustment of the gaps L1 and L2 with the outer peripheral surface 100c is easy,
And can be performed with high accuracy. An adjusting mechanism 4 is provided for each stay.
Is provided, the gap between the developing roller 2 and the squeeze roller 3 with respect to the photoconductor 100 in the axial direction can be adjusted, and the developing roller 2 and the squeeze roller 3 can be individually adjusted.

The developing roller stay 30 is supported by the arm 38 of the pressing support means 37, and is supported in a state where it is pressed against the photosensitive member 100 by the urging force of the coil spring 39. Through the photoreceptor 10
The contact with the surface 100c of the photoconductor 100 can reduce the load on the rotation of the photoconductor 100. The bearings 34,
Instead of 35 and 36, rollers may be provided on the shafts 31, 32 and 33, respectively, so as to be rotatable.

(Fourth Embodiment) This embodiment is characterized in that positioning members 50 centered on the central shaft 5 are provided at both ends of the photoreceptor 1, respectively. Hereinafter, FIGS. 11 and 12
The description will be made using the positioning member 50 on one side. The positioning member 50 includes the developing roller 2 and the squeeze roller 3.
Can be moved in the circumferential direction. A ball (not shown) is formed between the inner case 51 and the inner case 51 fitted to the end 1A having a smaller diameter than the outer peripheral surface 1c of the photoconductor 1. And an outer case 52 fitted and inserted in the bearing structure. The inner case 51 can rotate integrally with the photoconductor 1 and can also rotate relative to the outer case 52.

On the outer peripheral surface 52a of the outer case 52,
A developing roller stay 53 having shaft stays 11 and 12 rotatably supporting the shafts 9 and 10 of the developing roller 2 and the squeeze roller 3 is supported by and pressed against the pressing support means 37 '.

The developing roller stay 53 is formed so as to conform to the shape of the outer peripheral surface 52a of the outer case 52, and can be brought into contact with and separated from the outer peripheral surface 52a. As in the first embodiment, the shaft stays 11 and 12 are attached to the upper surface 53a of the developing roller stay 53 by shafts 15 and 16 so as to be swingable about their base ends 11a and 12a. The upper surface 53a has an upper surface 53a on the other end 11b, 12b.
The leaf springs 17 and 18 for giving the swinging behavior in the direction are screws 19.
A, 19B. The shaft stays 11 and 12 are provided with an adjustment mechanism 4 that allows the spindle 40 to advance and retreat from the cylindrical body 43 to the upper surface 53a.

The pressing and supporting means 37 'has one end 54a
The lever 54 rotatably supported by the apparatus main body 1D at 4c
And a coil spring 39. Lever 5
The other end 54b of the pin 4 is rotatably provided by being pin-connected to the developing roller stay 53. A coil spring 39 is provided between the lever 54 and the apparatus main body 1D in a state in which the coil spring 39 is contracted from its natural length. The coil spring 39 urges the developing roller stay 53 toward the photosensitive member 1 and presses the shaft stay. 11 and 12 are held at fixed positions so as not to move in the circumferential direction of the photoconductor 1.

According to such a configuration, when the simple 44 is rotated to advance and retreat the spindle 40, the other ends 11b and 12b are opposed to the shafts 15 and 12b against the urging force of the pressing support member 37 'and the leaf springs 17 and 18. It is swung about the center 16 so as to be slightly approached or separated from the upper surface 53a. Accordingly, the distance between the center of the axis of the developing roller 2 and the squeeze roller 3 and the positioning member 50 can be changed, so that the developing roller 2 and the squeeze roller 3 and the outer peripheral surface 1 of the photoconductor 1 can be changed.
The distances L1 and L2 with respect to c can be easily finely adjusted. Developing roller stay 5 having shaft stays 11 and 12
3 is only in contact with the outer case 52,
The disassembly and assembly of the device, or the maintainability is improved.

In the fourth embodiment, the shaft stay 11 and the shaft stay 12 are mounted on the outer case 52 via the developing roller stay 53. However, the present invention is not limited to this.
For example, as shown in FIG. 13, the shaft stay 11 and the shaft stay 12 may directly contact the outer peripheral surface 52 a of the outer case 52. In this case, the connecting arms 55 are attached to the shafts 9 and 10.
And the other end 54 of the lever 54 is attached to the connecting arm 55.
The shaft stay 11 and the shaft stay 12 may be biased toward the outer case 52 by pin-connecting the pins b to support both.

(Fifth Embodiment) In this embodiment, as shown in FIG. 14, the shafts 9 and 10 of the developing roller 2 and the squeeze roller 3 are provided on the outer peripheral surface 52a of the outer case 52 constituting a pair of positioning members 50. Axial stays 110 and 1 that support
20 is mounted via spacers 58 and 59 serving as adjusting means. The drawings show only one side.

As shown in FIG. 14, the shaft stays 110, 120 are provided with spacers 58, 59 having a desired thickness between the bottom surfaces 110c, 120c and the outer peripheral surface 52a, and the screws 56, It is fixed at 57. Although the spacers 58 and 59 here are formed in a plate shape, they may be formed in an arch shape as in advance with the outer peripheral surface 52a.

By interposing the spacers 58 and 59 between the shaft stays 110 and 120 and the outer case 52 in this manner, the shaft stays 110 and 120 float from the outer case 52, and the developing roller 2 The distance between the axial center of the squeeze roller 3 and the positioning member 50 can be individually changed. Therefore, by changing the thickness of the spacers 58 and 59, the distances L1 and L2 between the developing roller 2 and the squeeze roller 3 and the outer peripheral surface 1c of the photoconductor 1 can be easily adjusted. By configuring the adjustment mechanism with spacers, there is an advantage that the structure can be simplified and the distances L1 and L2 can be adjusted at low cost.

In the configuration of the fifth embodiment, the outer case 5
2 is free to rotate, so the outer case 52
Or the connecting arm 55 is mounted on the shafts 9 and 10, and the shaft stays 110 and 120 are pressed by the pressing support member 37 'composed of the lever 54 and the coil spring 39. It may be supported and held at a desired portion. When the shaft stays 110 and 120 are supported by the pressing support member 37 ', the shaft stays 11 and 120 are used.
It is not necessary to fix 0, 120 to the outer peripheral surface 52a with the screws 56, 57. In order to improve operability, the shaft stay 11
It is also effective to exert a magnetic force between 0, 120 and spacers 58, 59.

In the fifth embodiment, the spacers 58 and 59 are interposed between the positioning member 50 and the shaft stays 110 and 120. However, the developing system roller stay 6 in the first embodiment is used.
And the outer case 22 constituting the developing roller stay 20 in the second embodiment, or the developing roller stay 30 in the third embodiment, and the other end 11 of each of the shaft stays 11 and 12.
b and 12b may be arranged in place of the support member 4 constituted by a micrometer. Alternatively, instead of the shaft stays 11 and 12 used in the first to fourth embodiments, the shaft stays 110 and 120 in the fifth embodiment may be used for the shafts 9 and 9, respectively.
Of course, it does not matter if the 10 is rotatably supported.

In each of the embodiments described above, the other end 11b,
Although 12b is urged by the leaf springs 17 and 18, respectively, the coil spring may be pulled toward the photosensitive member 1 instead of the leaf springs 17 and 18. Further, the developing roller is a developing roller 2
A configuration may be adopted in which a set roller (not shown) is added together with the squeeze roller 3 and the set roller is supported as in the above-described embodiments so that the gap between the photoconductors 1 and 100 can be adjusted.

[0042]

According to the present invention, various rollers of the developing system arranged in the vicinity of the photoreceptor are mounted on a developing roller stay or a positioning member via a shaft stay to form a unit. Since the shaft stay can be displaced with respect to the developing roller stay and the positioning member, the gap between the photoconductor and the developing roller can be finely adjusted individually. Therefore,
Since the gap management can be performed even if the manufacturing accuracy required for the developing roller is relaxed, the cost of the apparatus can be reduced, the gap can be adjusted when each roller is worn, and the yield is improved.

According to the present invention, since the adjusting mechanism is constituted by the micrometer mechanism, the gap can be adjusted with high accuracy. If the adjustment mechanism is a spacer, spacers with different thicknesses can be installed according to the situation, improving the operability of the adjustment work and adjusting the gap without special equipment such as a micrometer mechanism. The gap can be easily adjusted at a lower cost.

[Brief description of the drawings]

FIG. 1 is a side view illustrating a schematic configuration of a developing device according to a first embodiment of the present invention.

FIG. 2 is a front view of the developing device according to the first embodiment of the present invention.

FIG. 3 is an enlarged view showing a configuration of a developing roller stay and an operation of adjusting the developing roller which are main parts of the first embodiment.

FIG. 4 is a partially cutaway enlarged view showing a micrometer mechanism as an example of an adjustment mechanism.

FIG. 5 is a side view illustrating a schematic configuration of a developing device according to a second embodiment of the present invention.

FIG. 6 is a front view of a developing device according to a second embodiment of the present invention.

7A is a diagram illustrating a mounting structure of a photoconductor and a developing roller stay, and FIG. 7B is a diagram illustrating a modified example of a mounting structure of a photoconductor and a developing roller stay.

FIG. 8 is a side view showing a schematic configuration of a developing device according to a third embodiment of the present invention.

FIG. 9 is a front view of a developing device showing a third embodiment of the present invention.

FIG. 10 is an enlarged view showing a configuration of a developing roller stay and an adjusting operation of the developing roller which are main parts of the third embodiment.

FIG. 11 is a side view illustrating a configuration of a developing device according to a fourth embodiment of the present invention.

FIG. 12 is an enlarged view showing a configuration of a positioning member, which is a main part of a fourth embodiment, and an operation of adjusting a developing system roller.

FIG. 13 is a side view illustrating a schematic configuration of a developing device according to a modification of the fourth embodiment.

FIG. 14 is a side view illustrating a configuration of a developing device according to a fifth embodiment of the present invention.

FIG. 15 is an enlarged view showing a configuration of a positioning member and an adjusting mechanism, which are main parts of a fifth embodiment, and an operation of adjusting a developing system roller.

[Explanation of symbols]

 Reference Signs List 1,100 Photoconductor 2 Developing roller 3 Squeeze roller 4 Adjusting mechanism 5 Central axis 6, 20, 30, 53 Developing roller stay 9 Developing roller axis 10 Squeezing roller axis 11, 12 Axis stay 34, 35, 36 Rotating member REFERENCE SIGNS LIST 50 positioning member 58, 59 spacer 102 photoconductor end 110, 120 shaft stay

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tsuneo Kurotori 1-3-6 Nakamagome, Ota-ku, Tokyo, Ricoh Co., Ltd. (72) Inventor Seiichi Miyagawa 1-3-6 Nakamagome, Ota-ku, Tokyo・ In Ricoh Co., Ltd.

Claims (6)

[Claims] A developing device that forms an electrostatic latent image on a photoreceptor, is disposed at a distance from the electrostatic latent image on the photoreceptor, and adheres toner dispersed in a liquid to form a toner image. A roller and a toner image on the photoreceptor are installed with an interval,
In a wet image forming apparatus having a squeeze roller for removing unnecessary liquid after development, an axis stay of the developing roller and the squeeze roller, and an adjustment mechanism for changing a distance between the axis stay and a central axis of the photoconductor are provided. A developing device for a wet image forming apparatus, comprising a developing roller stay provided with the developing device. 2. A wet image forming apparatus according to claim 1, wherein said photosensitive member is formed in a drum shape, and said developing roller stay is rotatably supported on the same central axis as said drum-shaped photosensitive member. Developing device. 3. The photosensitive member is formed in a drum shape, and the developing roller stay and the drum-shaped photosensitive member are in contact with an end of the photosensitive member via a rotating member. 2. The developing device of the wet image forming apparatus according to 1. 4. A developing method for forming an electrostatic latent image on a photoreceptor, installing the electrostatic latent image on the photoreceptor at an interval, and adhering toner dispersed in a liquid to form a toner image. A roller and a toner image on the photoreceptor are installed with an interval,
A wet-type image forming apparatus having a squeeze roller for removing unnecessary liquid after development, wherein the photosensitive member has a drum shape, and the developing roller having the same center axis as the photosensitive member at both ends of the drum-shaped photosensitive member; A developing device for a wet image forming apparatus, comprising: a squeezing roller positioning member; and an adjustment mechanism for changing a distance between the developing roller and the axial center of the squeeze roller and the positioning member. 5. The developing device for a wet image forming apparatus according to claim 1, wherein said adjusting mechanism is constituted by a spacer. 6. A developing device for a wet image forming apparatus according to claim 1, wherein said adjusting mechanism has a configuration utilizing a micrometer.