JPH04117861U - Image forming device - Google Patents

Abstract

(57) [Summary] [Purpose] In view of the shortcomings of the prior art, the present invention completely eliminates malfunctions in the paper ejection direction and jams caused by such malfunctions in an image forming apparatus having a plurality of switchable paper ejection paths. The purpose is to provide an image forming apparatus that prevents [Structure] The present invention is applied to, for example, an image forming apparatus in which a paper output tray provided on the side wall of the apparatus main body can be folded, folded, raised, or lowered. , a forced displacement means for the guide means is provided at a predetermined location of the paper discharge tray section, and the guide means is configured to be forcibly displaced from one paper discharge path to another paper discharge path when the paper discharge tray is changed direction. At the point.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to image forming devices used as facsimile machines, printers, and copying machines. In particular, an image form that is configured to enable selective switching of the ejection direction of the recording material after image fixation. related to construction equipment.

0002

[Conventional technology]

Recording material after image fixation is traditionally used as a paper ejection method for printing paper used in printers, etc. A method in which paper is ejected face-up to a paper ejection tray installed outside the side wall of the device. Then, while inverting the recording material after image fixation, place it on the paper ejection surface provided on the top side of the device, for example. In the former, the printing condition can be easily determined during printing, and in the latter, has advantages such as automatic page alignment, and for this reason, it is difficult to use in known printers, etc. incorporates the above two paper ejection methods into the device and adjusts the paper ejection section depending on the printing purpose. A device that allows selection as appropriate has been proposed.

0003

[Problem that the idea aims to solve]

The switching mechanism in this type of image forming apparatus includes a separation mechanism for the two paper ejection paths. A guide means is disposed on the crossroad, and the switching guide is driven by an electric drive means such as a solenoid. Alternatively, it is configured so that it can be switched using mechanical means such as a switching lever, but the Paper is often ejected in the wrong direction because the switching status cannot be clearly understood from the outside. There was a problem that the

0004 On the other hand, the paper ejection mechanism that uses the above-mentioned face-up method generally has a paper ejection mechanism from the side wall of the device. There are problems in terms of space saving due to the long extension of the relay, and for this reason conventional equipment When not in use, the paper output tray can be folded or erected toward the side wall of the device. Although there is a technology that configures the If this formula is adopted, the face-up may occur due to a malfunction of the switching when the tray is bent. If you try to eject the paper in this state, the recording material cannot be ejected because the tray is bent, and the paper will not be ejected. Otherwise, a jam will occur. In view of the drawbacks of the prior art, the present invention provides a screen having multiple switchable paper ejection paths. In the image forming device, it is possible to completely eliminate malfunctions in the paper ejection direction and jams caused by such malfunctions. An object of the present invention is to provide an image forming apparatus that prevents

[0005]

[Means to solve the problem]

This invention allows the paper output tray provided on the side wall surface of the device body to be folded, folded and raised up. Or, in order to make it possible to lay down, and more preferably to save space, the paper ejection tray is An image forming device that can be stored in a storage position provided on the wall of the device body by changing the direction of the laser beam. This applies to all locations.

[0006] The feature is that the guide means is forced into a predetermined position of the paper ejection tray section. Displacing means is provided to move the guide means from one paper ejection path to the other when changing the direction of the paper ejection tray. The structure is such that it can be forcibly displaced toward the other paper discharge path. In this case, forced displacement means that even if the control state of the guide means is Forcibly move from one paper ejection path to the other paper ejection path regardless of the paper path side. In other words, even if there is another control mechanism, its control state This refers to displacing the guide means to the other paper discharge path side in preference to the other paper discharge path. Note that it is also possible to switch the normal paper ejection path by changing the direction of the paper ejection tray. However, it is usually easier to operate using a switch such as a solenoid.

[0007] On the other hand, the invention according to claim 2 provides that the guide means is provided at a predetermined location of the paper discharge tray section. means for preventing the positional displacement of the guide means when the paper discharge tray is in the state of change in direction; The present invention is configured such that it is possible to prevent the paper from returning from the other paper discharge path to the one paper discharge path side. In this case, the forcible displacement means and the blocking means may each be constituted by separate members, or It is also possible to construct them from common members.

[0008]

[Effect]

According to this technical means, by changing the direction of the paper ejection tray on the one paper ejection path side, In other words, regardless of the control state of the control mechanism of the guide means disposed within the device body, If the guide means is placed on one side of the paper ejection path by mistake, the It is possible to switch to the other paper ejection side.

[0009] Therefore, when the paper ejection path is blocked due to the change in direction of the paper ejection tray, the guide Even if there is an operational error or forgetting to switch the output path, the output path will be forcibly switched to the other output path. This completely eliminates the possibility of recording material flowing into the paper ejection path, and prevents the above-mentioned malfunction. The resulting jam can be completely prevented.

0010 In this case, even if you perform forced switching as described above, it will not work due to incorrect operation or noise signals. As a result, the guide means returns to the one side of the paper ejection path that is blocked by the paper ejection tray. You may end up doing this. The invention recited in claim 2 assumes such a case.

[0011] In addition, in order to save space, this invention stores the paper output tray in a storage area on the wall of the device. It is preferable to let In any of the above cases, the paper ejection tray is moved from the paper ejection position to the guide means. The structure is configured so that the direction can be changed toward a position where it can face the By providing the above-mentioned position displacement means and the position displacement prevention means, the operation is ensured, and the Use the protrusions on the paper output tray, the folding part when changing the direction of the paper output tray, etc. for each of the above methods. It is preferable because it can be formed simply and easily.

0012

【Example】

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. However, this fruit The dimensions, materials, shapes, and relative positions of the components described in the examples are particularly specific. Unless there is a specific description, the scope of this invention is not intended to be limited to only that. This is just an illustrative example. FIG. 1 shows the configuration of main parts on the paper ejection side of an image forming apparatus according to an embodiment of the present invention. To briefly explain the structure along the flow of the material, the image is fixed by a pair of fixing rollers. The recorded recording material is guided to the switching guide 11 position via the paper ejection roller 2, and is guided to the switching guide 11 position as shown in FIG. When the switching guide 11 is swinging upward from the recording material conveyance path A, as shown in FIG. The paper is ejected to the paper ejection tray 20 in a face-up state.

[0013] On the other hand, as shown in FIG. 2, the switching mechanism 10 moves the switching guide 11 to convey the recording material. By swinging downward from the feed path A, the reversing paper ejection path A1 is opened, and the The paper is ejected along the reverse paper ejection guide 3 formed along the inner wall surface of the wall, and the paper is ejected along the ejection roller. 4, the paper is discharged face down to a paper discharge section 5 provided on the top side of the apparatus.

[0014] Next, each of the above members will be explained in detail. The switching mechanism 10 includes a solenoid 12 and a forward and backward movement of the solenoid 12. A substantially triangular switching lever 14 that swings at a predetermined angle against the force of a spring 13; A rotary lever whose one end is pivotally supported on the lever 14 and rotates by a predetermined angle around a shaft 15a. 15, and the base end side of the switching guide 11 is connected to the shaft 15a of the rotating lever 15. By being fixed, the switching guide follows the forward and backward movements of the solenoid 12. 11 can be swung up and down across the recording material conveyance path A. The other end side 14b of the switching lever 14 is further connected to the paper ejection tray 2 than the paper ejection opening 6. 0 protrudes to the storage section side.

[0015] On the other hand, the outer wall surface of the side wall of the apparatus main body located on the opposite side of the reversing paper ejection guide 3 is A rectangular recess is provided from the top surface to the mounting part of the rotation shaft 21 on the base end side of the paper output tray 20. The structure is such that a folded paper discharge tray 20 (described later) can be stored in the recessed portion 7.

[0016] The paper ejection tray 20 is oriented slightly diagonally upward from the lower position of the paper ejection opening 6 on the side wall surface. It is formed by extending almost horizontally, and it is divided into two parts in the middle, and there is a gap between the two parts. are connected via a shaft 22, and the distal tray part 20A is connected to the proximal tray part 20A about the shaft 22. - portion 20B is configured to be foldable toward the upper surface side.

[0017] The base tray portion 20B is centered on a shaft 21 provided at the end of the paper discharge opening 6 of the main body of the apparatus. The tray portion 20A is configured to be able to stand upright as shown in FIG. A portion of the upper surface of the width regulating plate 23 facing the rotation lever 15 is provided in a tongue-like shape, When the tray 20 is stood up, the rotation lever 15 is rotated counterclockwise via the protrusion 24. The structure is configured to prevent movement.

[0018] On the other hand, regarding the front tray portion 20A, the shaft support 25 on the base side of the tray portion 20A is By appropriately determining the raised shape, the apparent appearance when folding the tray portion 20A can be reduced. After setting the thickness appropriately and folding the tray portion 20A, the base tray portion 20B By standing up the switch lever 14, it faces the other end of the switching lever 14 while being close to the other end. This makes it possible to prevent counterclockwise rotation of the switching lever 14. It consists of

[0019] Next, the operation of this embodiment will be explained. The front tray portion 20A of the paper ejection tray 20 is made to stand vertically in a folded state. By storing the paper in the storage section 6, space can be saved in the case of reverse paper ejection operation. I can figure it out. At this time, if the switching guide 11 is mistakenly located in the state shown in Fig. 1, When the tray 20 is raised, the protrusion 24 moves the rotary lever 15 clockwise. The switching guide 11 is forcibly swung downward, and the reverse paper ejection path A is moved. 1 is released.

[0020] After the above-mentioned standing up, the above-mentioned protruding portion 24 is moved in the counterclockwise direction of the rotary lever 15. Rotation is prevented, and the back side of the folded front tray portion 20A is Since it faces the other end of the bar 14 in close proximity, the switching lever 14 Counterclockwise rotation can be prevented.

[0021] As a result, the solenoid 12 may malfunction due to an erroneous operation or a noise signal. Even if the switching guide 11 tries to swing upward, this can be prevented. Acts as a safety mechanism.

[0022]

[Effect of the idea]

As described above, according to the present invention, an image format having a plurality of switchable paper ejection paths is provided. completely prevent malfunctions in the paper ejection direction and jams caused by such malfunctions. In addition to preventing problems on the paper ejection path due to malfunction of the solenoid for switching the paper ejection path, etc. This can be completely prevented. It has various effects such as

[Brief explanation of drawings]

FIG. 1 shows the configuration of main parts on the paper ejection side of an image forming apparatus according to an embodiment of the present invention, and shows a state in which the paper ejection tray side is open.

FIG. 2 shows a state in which the main part configuration of FIG. 1 is housed on the paper discharge tray side in the apparatus main body side.

[Explanation of symbols]

10 Switching guide means 1 Image fixer A One paper output path A1 Other paper ejection path 24 Forced displacement means 23 Position displacement prevention means

Claims (3)

[Scope of utility model registration request] Claim 1: A configuration in which the paper discharge path for the recording material after image fixation can be switched from one paper discharge path to the other paper discharge path by utilizing the positional displacement of a switching guide means disposed on the downstream side of the image fixing device. In the image forming apparatus equipped with
An image forming apparatus characterized in that a forced displacement means for the switching guide means is provided, and the guide means is configured to be forcibly displaced from one paper discharge path to the other paper discharge path when the paper discharge tray direction is changed. 2. A means for preventing the positional displacement of the guide means is provided at a predetermined location of the paper discharge tray, and when the paper discharge tray is in a state of change, the guide means is moved from the other paper discharge path to the one paper discharge path side. The image forming apparatus according to claim 1, wherein the image forming apparatus is configured to be able to prevent the image forming apparatus from returning to the image forming apparatus. 3. The paper discharge tray is configured to be able to be turned from a paper discharge position in a direction facing the guide means, and the forcible displacement means and the positional displacement prevention means are disposed on the facing side. Image forming apparatus according to item 1