JPH0540252U - Paper holding mechanism for recording paper tray - Google Patents

Abstract

(57) [Summary] [Purpose] To realize a rational paper holding mechanism that prevents the discharged recording paper from scattering and scattering on the recording paper tray. [Structure] On the recording paper tray 7 on which recording paper P discharged from the recording paper discharge port 4 is accumulated, power is transmitted from the platen roller 1 on the apparatus main body side, and the tray is interlocked with the discharging operation of the recording paper P. A paper pressing member including a paper pressing member 10 and a hanging bar 12 that is moved upward to a standby position and is moved downward on the tray in association with the pullback operation of the recording paper P is provided so as to be vertically movable.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a paper pressing mechanism for a recording paper tray, which is used in a device such as a facsimile machine, in which recording paper discharged from a recording paper discharge port is deposited on the recording paper tray.

[0002]

[Prior Art]

 For example, in a facsimile machine equipped with an automatic cutter, the recording paper fed out from the built-in roll paper by the platen roller at the time of reception and printed with the received image etc. at the printing section is cut into a specified original size by the automatic cutter. Then, the recording paper is discharged to the outside from the recording paper discharge opening that is opened in the main body of the device. In this type of fax machine, in order to prevent the cut recording paper discharged from the recording paper discharge port from falling during reception, etc., the recording paper discharge port usually receives a discharge recording paper below it. The recording paper tray of the body is designed to be inserted.

[0003]

[Problems to be solved by the device]

 However, if the recording paper tray is simply attached below the recording paper discharge port, the discharged recording paper may have a curl tendency when it is wound on the roll paper, and is discharged onto the tray. It is difficult to secure an orderly stacking state on the tray, because the stacking order of the recording paper is not uniform and the recording paper is easily rolled up into a cylindrical shape and scattered. Therefore, not only does it look bad, but it also causes inconvenience in post-processing and rearranging the stack of recording paper, or problems such as the recording paper being easily scattered from the tray by a small air flow. There are easy problems.

The present invention proposes a paper pressing mechanism for a recording paper tray that can rationally solve such problems.

[0005]

Means for Solving the Problems In the present invention, as a means for achieving the object, a recording paper tray on which a recording paper discharged from a recording paper discharge port is accumulated, and a tray above the tray is interlocked with a recording paper discharging operation. It is equipped with a paper pressing member that is moved up to the standby position and is moved down on the tray in conjunction with the pullback operation of the recording paper so that it can move up and down.

[0006]

[Action]

 In this paper pressing mechanism, when the recording paper discharging operation is performed, the paper pressing member moves upward to the standby position above the tray, and the recording paper discharging operation from the recording paper discharging port to the tray is performed without any hindrance. After the recording paper is cut, when the recording paper pullback operation is performed, the paper pressing member moves down on the tray, and thereafter, while the recording paper discharging operation is stopped, the paper pressing member discharges the paper on the tray. The recording paper will be pressed down from above.

[0007]

【Example】

 1 to 3 show an embodiment in which the present invention is applied to a recording paper tray of a facsimile machine.

Here, FIG. 1 and FIG. 2 show the outline of the main part of the apparatus in comparison with the operation during the recording paper discharge operation and the recording paper pullback operation, and FIG. An outline of a paper holding member that can be freely moved is shown.

First, the configuration of the apparatus main body side will be described. Reference numeral 1 is a platen roller, and a printing unit (thermal head) 2 on which a feeding end of a recording paper P fed from a built-in roll paper (not shown) is pressed onto the platen roller. Is conducted between and. The platen roller 1 is rotated in the clockwise forward direction as indicated by an arrow in FIG. 1 at the time of reception or the like, and the recording paper P on which the received image or the like is printed is printed by the printing unit 2 on the roller 1. It passes over the paper guide 3 and is ejected out of the machine through a recording paper ejection port 4 which is open in the front.

At the terminal end of the recording paper discharge path adjacent to the recording paper discharge port 4, an automatic cutter configured by vertically arranging a movable blade 5a and a fixed blade 5b is mounted, and the print discharge of the recording paper P is performed. The cutting operation is performed at a timing related to the ejecting operation, and the recording paper P discharged through the space between the movable blade 5a and the fixed blade 5b is cut into a predetermined document size.

In the middle of the recording paper guide 3 arranged between the platen roller 1 and the automatic cutters 5a, 5b, a paper sensor (transmissive photo sensor) for detecting the presence or absence of the recording paper P on the guide is provided. Sensor) 6 is provided. The paper sensor 6 cuts the recording paper P with the auto cutters 5a and 5b, and then rotates the platen roller 1 in the counterclockwise reverse direction as shown by the arrow in FIG. 2 to move the leading end of the recording paper to the platen roller 1. When it is pulled back to the vicinity, it plays the role of detecting the remaining of the recording paper P on the guide 3 and detecting the occurrence of paper jam.

Below the recording paper discharge port 4 which is opened at the end of the recording paper discharge path, a protrusion provided at its tip is inserted into an insertion hole (both not shown) opened in the main body cover, etc. Then, the recording paper tray 7 is removably inserted in an appropriate inclined posture, and the discharged recording paper Pout cut by the auto cutters 5a and 5b is dropped on the recording paper tray 7 and deposited in the discharging order. .. A paper pressing mechanism 8 according to the present invention is provided on the recording paper tray 7.

As shown in FIG. 3, the paper pressing mechanism 8 includes a portal frame-shaped paper pressing member 10 that is rotated integrally with the rotary shaft 9 housed in the main body of the apparatus and moved up and down. , A gate-shaped hanging bar 12 (which may be a hanging film such as a film) which is swingably mounted around a support shaft 11 which is horizontally mounted on the paper presser 10 in the vicinity of the rotating shaft 9. The hanging rod 12 can move up and down independently of the rotary shaft 9 and the paper retainer 10.

Therefore, as shown in FIG. 1, the paper pressing mechanism 8 is moved up to the standby position above the tray in conjunction with the discharging operation of the recording paper P from the recording paper discharge port 4, and As shown in FIG. 2, it is provided so as to be moved down on the tray in conjunction with the pullback operation of the recording paper P. Specifically, as shown in FIG. 1 and FIG. 2, the platen gear 1 a provided coaxially with the platen roller 1 and the rotary shaft 9 of the paper pressing mechanism 8 are meshed with each other via the torque limiter 13, and the transmission torque is transmitted. Under a condition that is less than a certain value, the rotary shaft 9 is rotated in conjunction with the platen roller 1 and the paper presser 10 is moved up and down on the recording paper tray 7. Reference numeral 14 is a stopper provided above the recording paper discharge port 4, and is brought into contact with the paper presser 10 when the paper presser 10 moves upward to define a standby position of the paper presser 10 on the tray 7.

With the paper pressing mechanism 8 configured as described above, as shown in FIG. 1, the platen roller 1 rotates in the clockwise direction to discharge the recording paper Pout from the recording paper discharge port 4. When it is carried out, the paper presser 10 is moved upward above the tray and takes a standby position. That is, when the paper presser 10 moves up and is constrained to the standby position where it comes into contact with the stopper 14, the torque limiter 13 works and the platen roller 1 is held at that position while continuing to rotate forward. become. At this time, since the paper presser 10 is in the upper standby position, the recording paper discharge operation from the recording paper discharge port 4 is not hindered. On the other hand, with respect to the hanging bar 12, as shown in the same figure, the contact state with the recording paper tray 7 is maintained during this period, and the recording paper Pout accumulated on the tray is lightly pressed from above while recording paper. It serves to guide the discharge recording paper Pout newly discharged from the discharge port 4 to the uppermost layer. Therefore, there is no fear that the recording paper stacking state is disturbed or the discharged recording paper Pout is scattered even while the paper pressing member 10 is in the upper standby position.

Next, after the recording paper is cut by the auto cutters 5a and 5b, when the platen roller 1 is rotated counterclockwise as described above to perform the retracting operation of the recording paper P, as shown in FIG. As shown in, the paper presser 10 is moved downward from the standby position and abuts on the recording paper tray 7, and the discharged recording paper Pout accumulated on the tray 7 together with the droop 12 is pressed from above. After that, while the discharging operation of the recording paper P is stopped, the discharged recording paper Pout on the tray is stably held in the aligned state by the paper pressing members 10 and 12.

As described above, when the paper pressing mechanism 8 based on the present invention is adopted, the discharging operation is not obstructed during the discharging of the recording paper from the recording paper discharge port 4, and when the recording paper is stopped, The function of stably holding the discharged recording paper Pout accumulated on the sheet is automatically performed to effectively solve problems such as scattering and scattering of the discharged recording paper Pout on the recording paper tray 7. it can.

In the embodiment, as a preferred embodiment of the paper pressing member, the paper pressing member 10 and the drooping rod 12 are used in combination, but the paper pressing member 10 is also effective. Even if it is used alone, as described above, it is extremely advantageous in that it has a function of guiding the discharge recording paper Pout newly discharged to the uppermost layer while lightly pressing the already discharged discharge recording paper Pout from above. It can be said that it has high utility value.

Further, the mechanism for moving the paper pressing member up and down on the tray in conjunction with the discharge and pullback operations of the recording paper P is not necessarily limited to the mechanism of the embodiment.

In addition, the paper pressing mechanism according to the present invention is generally applicable to not only a facsimile machine but also a recording apparatus in which a recording paper tray is inserted.

[0021]

[Effect of the device]

 As described above, according to the paper pressing mechanism of the present invention, the paper pressing member is moved up and down on the recording paper tray in association with the discharging and pulling back operation of the recording paper. Does not impede the discharging operation, and when the recording paper discharge is stopped, the function of stably holding the discharged recording paper Pout accumulated on the tray is automatically performed, and the discharged recording paper Pout is discharged on the recording paper tray. It is possible to effectively solve the conventional inconvenient problems such as scattering and scattering.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a main part of a facsimile apparatus showing an embodiment of a paper pressing mechanism.

FIG. 2 is a schematic cross-sectional view corresponding to FIG. 1 showing the operation of the embodiment.

FIG. 3 is a perspective view showing an outline of a paper pressing member.

[Explanation of symbols]

 P recording paper Pout discharge recording paper 1 platen roller 1a platen gear 2 printing unit (thermal head) 3 recording paper guide 4 recording paper discharge port 5a, 5b autocutter 6 paper sensor 7 recording paper tray 8 paper pressing mechanism 9 rotating shaft 10 paper presser 11 Spindle 12 Drop Bar 13 Torque Limiter 14 Stopper

Claims (1)

[Scope of utility model registration request] 1. A recording paper tray, on which a recording paper discharged from a recording paper discharge port is deposited, is moved to a standby position above the tray in association with the recording paper discharge operation, and a recording paper pullback operation is performed. A paper pressing mechanism for a recording paper tray, which is provided with a paper pressing member which is interlocked and moved downward on the tray so as to be vertically movable.