JPH041160Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a paper ejection device for a recording device such as a printer that can switch between a normal paper ejection path and a path for ejecting paper to a removably attached dedicated tray using a switching claw. .

Prior Art Paper that has been fixed by a fixing device such as a printer is ejected to a paper ejection tray provided on the top plate of the device body through a reversing guide that makes a U-turn in order to stack the sheets in page order and to reduce the installation space. Many of them are made to look like this.

However, recently, printers have also been used to print addresses on envelopes and thick postcards, and such highly rigid paper can jam or roll when transported along a curved reversing path. Because of the possibility of damage, some devices are designed to eject the paper from the fixing device through a more or less straight path to a separate dedicated tray. Switching between the reversing path for ejecting normal paper and the path to the dedicated tray described above is normally performed using a switching claw, but conventionally this switching was operated by a manual lever or a switch on the operating unit. This was generally done by a link mechanism using a solenoid. Therefore, not only the mechanism becomes complicated but also the operation is complicated, and the switching direction may be mistaken and the paper may be sent to an unintended path, resulting in a jam.

Purpose In view of the above-mentioned circumstances, it is an object of the present invention to provide a paper ejection device for a recording device such as a printer that can reliably switch the paper ejection path in a desired direction with a simple configuration and operation.

Structure In order to achieve the above object, the present invention provides a paper ejecting device for a recording device that has a switching claw that can switch between a normal paper ejecting path and a path for ejecting sheets to a removably attached special tray. By attaching the dedicated tray to a predetermined position, the switching claw is switched to a position where it guides the paper to the path to the dedicated tray, and when the dedicated tray is removed, the switching claw guides the paper to the normal paper ejection path. It is characterized by being able to be switched to different positions.

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

FIG. 1 is a diagram showing an embodiment of the present invention in which a special tray is not attached.

The paper 5 is fixed by a fixing device 3 composed of a heating roller 1 and a pressure roller 2, and is separated from the heating roller 1 by a separating claw 4. The paper 5 is then separated from the heating roller 1 by a pair of conveying rollers 6 and formed by a reversing guide 7 and a rib on the inner surface of the casing. The paper is discharged from a pair of paper discharge rollers 8 through a curved discharge path 7a onto a normal paper discharge tray 9 provided at the top of the apparatus main body with the image side facing down. Therefore, by taking out the sheets stacked on the tray 9 in page order and turning the image side up, a group of prints or copies with the same page order can be obtained.

In the figure, the lower left corner of the apparatus main body casing 10 is provided with a cutout 11 and a locking part 12, which serves as a mounting part for a dedicated tray for envelopes and thick paper. In order to switch the paper path between the paper ejection path to the special tray attached to this part and the normal paper ejection path 7a, a switching pawl 13 is installed at a position immediately after the conveyance roller 6.
However, the switching claw 13 is rotated by a tension spring 16 that is attached to a shaft 14 that is pivotally supported on the machine frame of the device main body, and that is stretched between the tip of an arm 15 that is fixed to the shaft 14 and the machine frame. In the state in which the dedicated tray is not installed as shown in FIG. 2, the upper guide surface is held at a position that guides the paper to the normal reversing path 7a. Further, an arm 17 is fixed to the shaft 14, which engages with the dedicated tray when it is mounted, and displaces the switching claw 13.

FIG. 2 shows a state in which the dedicated paper ejection tray 20 is mounted at a predetermined position in the mounting section of the main body of the apparatus. The end of the side plate 21 of the attached dedicated paper ejection tray 20 engages with the distal end engagement portion of the displacement arm 17 of the switching claw 13,
The switching claw 13 is rotated counterclockwise together with the shaft 14 about its axis against the force of the spring 16, and as shown in the figure, the lower guide surface of the switching claw is aligned with the pair of conveying rollers 6.
It is positioned at a position to guide the discharged paper 5 to the dedicated tray 20, and is held at that position.

When the dedicated paper discharge tray 20 is removed from the main body of the apparatus, the switching claw 13 returns to the state shown in FIG. 1.

Effects As described above, according to the present invention, with a simple configuration,
Since the paper ejection route is automatically switched to the desired route by attaching and detaching the dedicated tray to the main body of the apparatus, there is no risk of paper damage or jamming, and reliability and operability are improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention in a state in which a dedicated tray is not attached, and FIG. 2 is a sectional view showing the embodiment in a state in which a dedicated tray is attached. 5...Paper, 7a...Normal paper ejection path, 13...
Switching claw, 20...Special tray.

Claims (1)

[Scope of utility model registration request] In the paper output device of a recording device that has a switching claw that can switch between the normal paper output path and the path that outputs paper to a removably attached dedicated tray, the above switching can be achieved by installing the dedicated tray in a predetermined position. A feature is that the claw is switched to a position where the paper is guided to a path to a dedicated tray, and by removing the dedicated tray, the switching claw can be moved to a position where the switching claw is guided to a normal paper ejection path. paper output device.