JPH064359Y2 - Paper drop prevention device for transfer paper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a paper discharge tray device for a transfer paper of a copying machine of a type in which a jam treatment or the like is performed by opening the upper part of the machine around a fulcrum, and a printing machine. It can also be applied to the printing paper discharge tray device.

[Prior Art] Conventionally, in the case of this type of copying machine, when the upper part of the machine that can be opened / closed is opened around the fulcrum when the jammed paper is taken out, the paper on the transfer paper tray or the document tray falls or moves. This causes troublesome situations such as page alignment.

[Problems to be Solved by the Invention] In the prior art, as described above, when the upper part of the machine is opened, the paper on the transfer paper tray or the like may drop as shown in FIG.

In addition, if the opening angle of the upper part of the machine is limited in order to prevent the falling, the work such as taking out the jammed paper cannot be easily performed.

Further, if an attempt is made to prevent the falling by providing a protruding portion facing the upper side at the tip of the transfer paper tray or the like, it would be an obstacle to a long transfer paper or the like, which is inconvenient.

[Means for Solving the Problems] The present invention has been developed to solve the above problems, and its configuration will be described with reference to FIGS. A paper drop prevention device such as a paper discharge conveyance unit 6 which is pivoted upward and opens around a fulcrum 5 as a boundary between the upper and lower sides of the document conveyance guide of the document conveyance unit or the upper and lower sides of the transfer paper conveyance guide of the transfer sheet conveyance unit. In the copying machine 1 having the above-mentioned, the leading end of the document tray or the transfer paper tray 7 provided in the paper discharge / conveyance section 6 is provided with an extension plane which is generally almost flush with the surface of the tray 7, and the paper discharge / conveyance is carried out. There is provided a fall prevention plate 10 which rises up against the surface of the tray 7 during rotation due to the opening of the portion 6 and forms a blocking surface for preventing the fall of the paper on the tray 7.

[Operation] Since the present invention has the above-mentioned configuration, the drop prevention plate 10 can provide an extension plane substantially the same as the surface of the tray 7 of the discharge conveyance unit 6 such as transfer paper during normal copying. ,Also,
When a paper jam occurs or the like, when the paper discharge conveyance unit 6 is rotated about the fulcrum 5 to open it, the fall prevention plate 10 rises to the surface of the tray 7 and the transfer paper 8 on the tray 7 is lifted.
It is possible to prevent the falling of the like.

[Embodiment] An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a copying machine 1 equipped with a device for preventing a transfer sheet from falling according to the present invention. The image forming section 4 is placed on the sheet feeding section 2 of the sheet through the lower fulcrum 3,
On the upper side of the document transport section 6, the discharge transport section 6 is configured to open upward with the fulcrum 5 as a fulcrum, as a boundary between the upper and lower sides of the document transport guide of the document transport section or the upper and lower sides of the transfer sheet transport guide of the transfer sheet transport section. .

In the present embodiment, a transfer paper tray 7 is provided in the paper discharge conveyance section 6 so as to project obliquely upward, and the transfer paper 8 is discharged onto the transfer paper tray 7 in order.

By the way, in such a copying machine 1, when the paper is jammed inside the copying machine and the machine stops, that is, when a jam occurs, the uppermost sheet discharging and conveying section 6 is rotated around the fulcrum 5 and jams. The so-called jam was removed except for the paper.

However, in the conventional copying machine, when the paper discharge / conveyance unit 6 is rotated, the transfer paper 8 slides on the inclined transfer paper tray as shown in FIG. 4 and falls.

In the present invention, as shown in FIGS. 2 and 3, the fall prevention plate 10 is pivotally attached to the tip of the transfer paper tray 7 by a support shaft 12 so as to be rotatable in the arrow direction. A balance arm 11 is integrally fixed to both ends of the attachment part, and a lower end of the balance arm 11 is connected by a horizontal connecting rod 14. Normally, as shown in FIG. 2, the balance arm 11 is in a suspended state, one side of which is abutted against the stoppers 13 standing on both side surfaces of the transfer paper tray 7, and the upper surface of the fall prevention plate 10 is on the transfer paper tray. 7 is located on the extension plane of the surface of 7. When the transfer paper tray 7 is tilted as shown in FIG. 4, the fall prevention plate 10 provided at the tip of the tray 7 is rotated to the state shown in FIG. A blocking plane is formed to prevent the transfer paper 8 from slipping down.

[Effect of the Invention] Since the present invention has the above-described configuration and operation,
Since the balance arm 11 continues to hang down due to its own weight even if the paper discharge transport unit 6 is rotated upward about the fulcrum 5 for jam clearance, the fall prevention plate 10 is centered on the support shaft 12, As shown in FIG. 3, the transfer paper 8 rises up so as to support the transfer paper end on the surface of the transfer paper tray, so that the situation in which the transfer paper 8 or the like falls from the tray 7 is eliminated. Therefore, it is not necessary to remove the discharged transfer paper 8 or the like on the tray 7 every time the sham process is performed.

During normal copying, the surface of the fall prevention plate 10 is flush with the surface of the tray 7, and since no protrusions or the like are provided to prevent the fall, the transfer paper 8 longer than the length of the tray 7 or the like. Even in the case of, there is no fear that the tip end will come into contact with the fall prevention plate 10 and get caught there, thereby hindering the discharge operation.

[Brief description of drawings]

FIG. 1 is a front view of a copying machine equipped with a device for preventing the transfer paper or the like from falling according to the present invention. FIG. 2 is an enlarged front view of the tip of the transfer paper tray of the copying machine shown in FIG. 1, and FIG. FIG. 4 is a front view for explaining the operation of the leading end portion of the transfer paper tray shown in FIG. 2, and FIG. 4 is a front view for explaining the operation of the conventional copying machine. 1 ... Copier, 5 ... fulcrum, 6 ... Paper transport section, 7 ... Tray, 10 ... Fall prevention plate.

Claims (1)

[Scope of utility model registration request] 1. A copying machine having a paper discharging and conveying unit which is vertically rotated and opened with a fulcrum as a boundary between the upper and lower sides of a document conveying guide of a document conveying unit or the upper and lower sides of a transfer sheet conveying guide of a transfer sheet conveying unit. In the above, at the position of the leading end of the document tray or the transfer paper tray provided in the paper discharge transport unit in the discharge direction, a fall prevention plate that normally provides an extended flat surface that is substantially the same surface as the surface of the tray is pivotally supported, A balance arm is provided on the fall prevention plate to prevent the fall prevention plate from rising to the surface of the tray due to the weight effect of the balance arm when the discharge conveyance unit is opened to prevent the paper on the tray from falling. A fall prevention device for transfer paper or the like, characterized in that it forms a blocking plane.