JPH03114080A - Developing means carrying device - Google Patents

Abstract

PURPOSE:To attain speed-up and low vibration by providing a selecting means, elevating only a necessary developing means, and eliminating the need to elevate the other developing means. CONSTITUTION:An elevation guide means is provided with selecting means 101 which selectively elevates only a developing means that is to be elevated out of developing means 2a - 2c, and which does not elevate the other developing means. In other words, when a developing tank 2b is not needed to be elevated, the opening and closing door 101 becomes closed condition, the guide roller 4 of a developing tank 2b passes under a guide rail. Thus, after one sheet image is outputted, the developing means used to develop the subsequent sheet in a first color is carried at a high speed and at a low vibration.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention comprises a plurality of wet developing means, a horizontal conveyance means, and an elevation guide means for automatically raising and lowering the developing means during horizontal conveyance. The present invention relates to a developing means conveying device.

[Prior Art] Conventionally, this type of device has had a configuration as shown in FIG. Below the exposure drum 1 are Y (yellow) and M (magenta).
, C (cyan) developer tanks 2a containing developer solutions of each color.
2C is placed on the tank stand 3. Each developing tank 2
Guide rollers 4 and guide rails 5 are provided on both sides (the front and back sides of the lower surface), and friction reducing rollers 6 are provided on the left and right outer walls of each developing tank 2, respectively. It is placed in contact with the inner wall.

The developing tanks 2a to 2c all have a configuration as shown in FIG. 4, with a developing electrode 11 on the left side and a squeeze roller 1 on the right side.
2 are supported by springs 13 and 14, respectively. A developer is supplied to the developing electrode 11 from the bottom of the tank 2 by a pump 15 .

The photosensitive paper 7 attracted to the drum 1 completes charging and exposure and reaches the developing position. Now, the Y toner tank 2a is lifted up by the guide roller 4 and the guide rail 5, the electrode 11 is pressed against the drum 1 via the roller 21, and the squeeze roller 12 is pressed against the drum 1 by springs 13 and 14, respectively.

The developer pumped up by the pump 15 is applied to the electrode 11.
The upper surface contacts the photosensitive paper 7, and development is performed.

After development, excess developer is removed by squeeze roller 12. After completing the yellow process, the photosensitive paper 7 is repeatedly neutralized, charged, and exposed, and reaches the development position again. On the other hand, the tank stand 3 is moved rightward by the transport motor 8, and accordingly the Y developing tank 2a is lowered along the guide rail 5, and the M developing tank 2b is raised along the guide rail 5. After magenta process development, a cyan process is similarly performed and the paper is discharged.

[Problems to be Solved by the Invention] However, in such a developing means conveying device, in order to convey the first color developing means to the developing position when forming the next sheet of image after outputting -sheet of images, However, all the developing means had to be raised and lowered once, which made it impossible to meet the demands for faster image formation, and the large vibrations adversely affected the images.

The present invention has been made in order to solve the above-mentioned problems.The present invention is provided with the selection means, whereby only the necessary developing means is raised and lowered, and other developing means are not raised or lowered, thereby increasing the speed and reducing the cost. It is an object of the present invention to provide a developing means conveying device that meets the two requirements of vibration.

[Means for Solving the Problems] In order to achieve this object, the developing means conveying device of the present invention has a lifting guiding means that selects and raises only those developing means that need to be raised among a plurality of developing means, The other developing means are equipped with selection means that do not raise the developing means.

[Function] In the present invention having the above configuration, the selection means is provided in the elevation guiding means, and when the developing means are transported in the horizontal direction, selects and raises only the developing means that need to be raised; Other developing means are not raised.

[Example] Hereinafter, an example embodying the present invention will be described with reference to the drawings.

First, the configuration of this embodiment will be shown with reference to FIG.

Developing tanks 2a to 2 for each color of Y, M, and C are located below the drum 1.
c is arranged on a tank stand 3, and the tank stand 3 can be moved in the horizontal direction by a transport motor 8. Guide rollers 4 and guide rails 5 are arranged on both sides of each developing tank 2, and friction reducing rollers 6 are provided on the outer wall of each tank 2 at the boundary with the inner wall of the tank stand 3.

Opening/closing doors 101a, 1 below both ends of the guide rail 5
01b are the rotating shafts 102a and 10, respectively, as shown in FIG.
The guide rail 5 is supported so as to be openable and closable centering on the guide rail 2b. Rotary solenoids 103a, 103L+ are connected to the rotating shafts 102a, 102b, and the opening/closing doors 101a, 101b are connected to the solenoids 103a, 103b.
can be opened and closed freely.

That is, in this embodiment, the opening/closing door 101a.

101b, rotating shafts 102a and 102b, and rotary slides 103a and 103b constitute selection means.

Next, the operation of this embodiment will be explained.

First, when the yellow developing tank 2a is at the developing position near the drum 1, the drum 1 rotates and the photosensitive paper 7 adsorbed to the drum 1 finishes charging and exposing and reaches the developing position, and the yellow developing tank 2a reaches the developing position. Developed with a developer. When yellow development is completed, the transport motor 8 starts rotating, and the tank stand 3 begins to move toward the position shown in FIG. Now, the bottom of the Y developing tank 2a is not in contact with the tank stand 3, and only the guide roller 4 is suspended by the idle rail 5, so when the tank stand 3 moves to the right, it naturally descends.

At this time, the opening/closing door 101a is operated by the rotary solenoid 10.
“Open” state due to 3a! ! 1 (dotted line in FIG. 2), the yellow developer tank 2a is lowered to its normal position.

On the other hand, since the next color process is magenta, the opening/closing door 101b is brought into the "open" state by the rotary solenoid 103b, and the guide roller 4 of the magenta developing tank 2b is in contact with the guide rail 5 and is moved in the horizontal direction given by the transport motor 8. Convert part of the force to a force in the vertical direction. Although this force in the vertical direction is a very small force, since the developing tank 2 is provided with friction reducing rollers 6 between it and the tank stand 3, the load due to friction can be reduced. Therefore, the developing tank 2 can be raised even with this small force. The conveying motor 8 conveys the tank stand 3 to the right by one developing tank distance from the developing position, and then stops. At this time, the yellow developer tank 2a has already descended, and the magenta developer tank 2b has already risen to reach the required development position.

Next, the photosensitive paper 7 completes charging and exposure and reaches the development position, where development is performed.

The cyan process is carried out in the same manner.

After the cyan process is completed, while the image is output, the conveyance motor 8 starts rotating in preparation for the next copying process, and the tank stand 3 starts moving to the left in FIG. At this time, the opening/closing door 101b is in an "open" state in order to lower the cyan developing tank 2C, but the magenta developing tank 2b, which approaches the guide rail 5 next, does not need to be raised. Therefore, the opening/closing door 101a is "closed".
The state is reached, and the guide roller 4 of the magenta developing tank 2b
passes under the guide rail 5. The cyan developing tank 2c passes through the door 101b, and when it has completely descended, the door 101b becomes "closed" in order to allow the magenta developing tank 2b coming from below to pass through.

Since the yellow developing tank 2a is necessary for the next developing process and needs to be raised, the opening/closing door 101a becomes "open" when the magenta developing tank 2b passes, and the yellow developing tank 2a is opened. Raise to developing position. When the yellow developing tank 2a reaches the developing position, the conveyance motor 8 stops rotating and is ready for the next copying process.

[Effect of the Invention 1] As is clear from the detailed description above, according to the present invention, after outputting -images, the first color developing means is operated at high speed and with low vibration when forming the next image. can be transported to. Also, even when forming a monochrome image, the developing means can be operated at high speed and
Can be transported with low vibration. This allows high-quality images to be formed at high speed.

[Brief explanation of drawings]

1 to 2 show embodiments embodying the present invention, and FIG. 1 is a cross-sectional view showing the overall configuration, and f
FIG. 52 is an explanatory diagram of the operation, FIGS. 3 to 4 show a conventional example, and FIG. 3 is a sectional view showing the overall configuration.
FIG. 4 is a partially enlarged view. 101a, 101b--selection means, 102a, 10
2b... Selection means, 103a, 103b... Selection means.

Claims (1)

[Scope of Claims] 1. A plurality of wet developing means corresponding to a plurality of color developers, a conveying means for conveying the developing means in a horizontal direction, and a conveying means for automatically moving the developing means when conveyed by the conveying means. In a developing means conveying device equipped with a lifting guide means for raising and lowering, the lifting guide means selects and raises only those developing means that need to be raised among the plurality of developing means, and does not raise the other developing means. A developing means conveying device characterized by comprising a means.