JPH03243564A - Accumulating mechanism for paper sheets - Google Patents

Abstract

PURPOSE:To prevent confusion of storing a continuous series of paper sheets to be folded and accumulated on a stacker by moving the tips of the continuous paper sheets with a moving means in the direction opposite to the folding direction which is discriminated by a discriminating means, when a detecting means detects the tips of a continuous series of paper sheets. CONSTITUTION:When a continuous series of paper sheets 1a are transferred, and their tips are detected by a sensor 8a, a signal (a) is delivered to a main controller 26. As a result, a signal (c) is transmitted by the counting of the feeding amount S1 of a tractor 4, and the controller 26 instructs to discriminate the folding direction of the paper sheets to a discriminating controller 11. Then, the controller 11 discriminates the folding direction of paper sheets 1a which pass through a folding direction discriminating sensor 7a, and delivers a signal (b) to the controller 26. When a counter 16 counts the feeding amount S2 and transmits a signal (d) shortly, the controller 26 starts a belt mechanism controller 21 depending on the signals (b) and (d), and rotates a motor M2 in the right or the reverse direction depending on the folding direction of the signal (b). as a result, a belt 9a moves in the direction opposite to the folding direction, and the tips of the paper sheets 1a are led in the direction B of the bottom side of a stacker 5a. Then the movement is stopped by a signal (e) by counting the time T with a timer 19.

Description

[Detailed Description of the Invention] [Summary] Continuous paper that is folded and stacked in a stacker relates to a paper stacking mechanism that can move and stack the leading edge of continuous paper that has reached the bottom of a stacker in a direction opposite to the direction of the first fold. The purpose of this paper stacking mechanism is to provide a paper stacking mechanism that can prevent the occurrence of storage section failure.
In an apparatus for stacking and storing continuous paper in a storage unit, a determination means for determining the direction of the first fold of the continuous paper, a detection means for detecting that the leading edge of the continuous paper has reached the bottom of the storage unit, and a detection unit provided on the bottom of the storage unit. and a moving means for horizontally moving the leading edge of the continuous paper, and configured to move the leading edge of the continuous paper in a direction opposite to the fold direction determined by the determining means when the detecting means detects the leading edge of the continuous paper. be.

[Industrial application field]

The present invention relates to a stacking mechanism of a device such as a printer that uses folded continuous paper, and in particular, paper that can be stacked by moving the leading edge of the continuous paper that has reached the bottom of a stacker in the opposite direction to the first fold direction. It concerns an accumulation mechanism.

Recently, in high-speed printers, etc., folded continuous paper is often used to fold and stack the paper again in the stacker after printing. Since it is necessary to check each time, there is a need for a method that allows for normal accumulation.

[Conventional technology]

FIG. 10 is a side view showing an outline of a line printer, and the line printer has a paper supply section 2. Printer section 3 including a print head 30 and a platen 31. A tractor 4 has a sprocket held 40 in which the feed holes at both ends of the continuous paper 1a are set, and transports the continuous paper 1a by driving the sprocket/nodheld 40, a stacker 5a that folds and stores the printed continuous paper 1a, and a transport path 6 along which the continuous paper 1a is guided. The tractor 4 is connected to a motor (not shown).

With such a configuration, the leading page of the continuous paper 1a in the paper supply unit 2 is transferred to the printer unit 3 and the tractor 4.
When the print command button on the operation panel (not shown) is pressed, the tractor 4 and the print head 30 are driven based on the print information, and the continuous paper 1a is printed while being fed a line feed and a page feed, and is printed on the continuous paper 1a as indicated by the arrow A. direction, and are sequentially folded and stored in the stacker 5a.

[Problems to be Solved by the Invention] According to the above conventional method, when the continuous paper is stored in the stacker, as shown in FIG.
Depending on the contact position when the perforation between the first and second page reaches the bottom of the stacker, the first page may not be stored flat in the stacker, as shown in Figure 11(b). If the paper is folded in the opposite direction to the crease, it will bend in the middle of the page, and subsequent continuous paper sheets to be stacked will not be stored properly, resulting in disordered storage and, if left untreated, a jam. In order to prevent this, it is necessary for the operator to check each time the continuous paper begins to accumulate in the stacker, which is a nuisance.

SUMMARY OF THE INVENTION An object of the present invention is to provide a paper stacking mechanism that can prevent the occurrence of disordered storage of continuous paper that is folded and stacked in a stacker.

[Means to solve the problem]

FIG. 1 shows a diagram of the principle of the present invention.

In the figure, 1 is a continuous paper sheet, 5 is a storage section, 7 is a determining means for determining the direction of the first fold of the continuous paper sheet 1, and 8 is a means for detecting when the leading edge of the continuous paper sheet 1 has reached the bottom surface of the storage section 5. A detection means 9 is provided on the bottom surface of the storage section 5, and is a moving means for moving the leading edge of the continuous paper 1 in the horizontal direction.

Therefore, when the detection means 8 detects the leading edge of the continuous paper l,
The leading edge of the continuous paper l is configured to be moved by the moving means 9 in a direction opposite to the fold direction determined by the determining means 6.

[Effect]

First, the determining means 7 determines the direction of the first fold of the continuous paper 1, and when the detecting means 8 detects that the leading edge of the continuous paper 1 has reached the bottom surface of the storage section 5, the direction of the first fold of the continuous paper 1 is determined. By moving the leading edge of the continuous paper l in the opposite direction by the moving means 9, the first fold is folded along the fold line and stored, so that it is possible to prevent the storage from being disordered, and there is a risk of jamming. There is no need for confirmation checks by the operator.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 2 to 4. The same reference numerals refer to the same objects throughout the design.

Fold direction discrimination sensor 7a and belt machine side 9a in Fig. 2
correspond to the discriminating means 7 and the moving means 9 in FIG. 1, respectively,
The sensor 8a and counter 16 in FIG. 2 correspond to the detection means 8 in FIG.

FIG. 2(a) is a side view of an embodiment in which the present invention is applied to the line printer described in the conventional example, in which a light-transmissive sensor 8a is installed in the conveyance path 6 downstream of the tractor 4 to detect the leading edge of the continuous paper 1a. A fold direction discrimination sensor 7a is provided at a predetermined distance from the sensor 8a. Further, a belt mechanism 98 is provided on the bottom surface of the stacker 5b.

As shown in FIG. 3(a), the fold direction discrimination sensor 7a
is a shaft 70 provided on one guide plate 60 of the conveyance path 6.
A lever 71 is rotatably supported, and the tip of the lever 71 protrudes obliquely into the conveyance path 6, contacts the guide plate 61 on the opposite side, and releases the spring 72, as shown by the two-dot chain line in the figure.
is biased by the elasticity of

The contact between the guide plate 61 and the tip of the lever 71 is such that when the tip of the continuous paper 1a advances in the direction of arrow A, the continuous paper 1a easily pushes the lever 71 as shown by the solid line in the figure.
The tip is pushed up and rotated so that it makes light contact. A potentiometer 73 is attached to the shaft 70, and the potentiometer 73 is connected to a discrimination control section 11, which will be described later.

Therefore, when the leading edge of the continuous paper 1a to be transported approaches the position of the lever 71 and during the subsequent passage of the continuous paper 1a, the lever 71 may be moved slightly depending on the position of the continuous paper 1a.
rotates in either the positive or negative direction, but based on the change in the rotation angle between the potentiometers 73 at that time, the ± rotation of the potentiometer 73 due to the positive and negative rotations of the lever 71 when the fold reaches the tip of the lever 71. Since the change in angle is larger, this is determined.

As shown in FIG. 3(b), the belt mechanism 9a includes a belt 90. The heald 90 is composed of a motor M2 that drives a booster IJ91, 92 and a pulley 91, and the heald 90 moves in the directions of arrows B and C as the motor M2 rotates in forward and reverse directions. belt 90
The upper surface is arranged so that when the leading edge of the continuous paper 1a comes down from above, the leading edge is easily guided in the moving direction of the belt 90.
The surface has a high coefficient of friction or is formed with small irregularities.

Moreover, FIG. 2(b) is a control block diagram of FIG. 2(a),
In the figure, the discrimination control section 11 includes a sensor amplifier 12. It is equipped with a differentiation circuit 13° consisting of a -order differentiation circuit and a second-order differentiation circuit, and a discrimination circuit 14, and a lever 71 is rotated by the passage of the continuous paper 1a, and the potentiometer 7 is rotated according to the rotation angle.
When the change in the voltage output from 3 is second-order differentiated by the differentiating circuit 13, positive and negative pulses are obtained, and the discrimination circuit 14 compares the magnitude of the pulse with the reference value set in the setting part 15.
The direction of the crease is determined based on the positive and negative values, and a positive/negative determination signal is sent when the pulse size exceeds a reference value.

The counter 16 is activated when the sensor 8a detects the leading edge of the continuous paper 1a, counts the feed amount of the tractor 4, and when it reaches the feed amount S1 set in the setting section 17, sends a signal C. The count continues further, and when the feed amount S2 set in the setting section 18 is reached, the signal d is transmitted.

Here, the feed amount S1 is such that the first fold of the continuous paper 1a whose leading edge is detected by the sensor 8a is determined by the fold direction discrimination sensor 7.
The feed amount until reaching position a is set, and depending on the paper feed length of the tractor 4, the paper size, and the distance between the sensor 8a and the fold direction discrimination sensor 7a, the first fold of the continuous paper 1a is determined by the fold direction discrimination sensor 7a. Know when to pass. Further, the feed amount S2 is set as the feed amount of the tractor 4 from when the leading edge of the continuous paper 1a passes the position of the sensor 8a until it reaches the bottom of the stacker 5a, and at that timing, the continuous paper reaches the bottom of the stacker 5a. This means that it has been detected that the tip of 1a has arrived.

The timer 19 is activated when the belt mechanism control section 21, which will be described next, is activated, counts the time T set in the time setting section 20, and transmits a signal e. The time T is set as the time required to move the leading edge of the continuous paper 1a in the direction opposite to the direction of the fold by the movement of the belt 90 of the belt mechanism 9a until the leading edge of the continuous paper 1a is moved to a position where the continuous paper 1a is reliably folded at the fold.

The belt mechanism control section 21 rotates the motors so that the belt 90 moves in the opposite direction to the fold direction based on the signal d transmitted by the counter 16 and the discrimination signal from the discrimination control section 11, and starts the timer. The rotation of the motor M20 is stopped by the signal e sent by the motor M20.

The main control section 26 controls the tractor control section 22 that drives and controls the tractor 4 and the printer section 3 to carry out transport and printing of the continuous paper 1a, and also starts the counter 16 with the detection signal a of the sensor 8a and starts the counter 16. The discrimination control section 11 is started by the signal C of the discrimination control section 11 and the signal d of the counter 16, and the belt mechanism control section 21 is started by the signal e of the timer 19. 98 is stopped and the continuous paper 1a is normally stored in the stacker 5a.

Further, 23 indicates a sensor amplifier, and 24.25 indicates a motor driver.

Since it has such a configuration and function, the operation will be explained next with reference to the flowchart of FIG. 4 and the explanatory diagram of FIG. 5.

(2) First, the printing operation is started, the continuous paper 1a is transported by the drive of the tractor 4, and when the leading edge is detected by the sensor 8a, a detection signal a is sent to the main control section 26.

(2) Then, a command is issued to the counter 16, and counting of the amount of feed of the tractor 4 is started.

■When the continuous paper 1a is fed and the feeding amount S1 is counted, a signal C is transmitted, and the main control unit 26
At that timing, the discrimination control section 11 discriminates the direction of the first fold of the continuous paper 1a passing the position of the fold direction discrimination sensor 7a, and sends a discrimination signal to the main control section 26. send. The main control unit 26 temporarily stores the discrimination signal.

- Eventually, when the counter 16 counts the feed amount S2 and sends the signal d, the leading edge of the continuous paper 1a reaches the bottom of the stacker 5a at that timing, as shown in FIG. 5(a). The main control unit 26 activates the belt mechanism control unit 21 in response to the discrimination signal d, and the motor M2 rotates in the forward or reverse direction depending on the fold direction of the discrimination signal, as shown in FIG. 5 0)). 17, the belt 90 moves in the opposite direction to the direction of the fold, and the leading edge of the continuous paper 1a is guided in one direction 1, for example, the direction of arrow B, on the bottom surface of the stacker 5a.

(2) When the timer 19 counts the time T, a signal e is transmitted and the movement of the belt mechanism 9a is stopped.

(2) Thus, as shown in FIG. 5(C), as the printing operation progresses, the continuous sheets 1a are properly folded at the creases and are normally stored in the stacker 5a one after another.

In this way, by guiding the leading edge of the continuous paper 1a in the direction opposite to the direction of the first fold and storing it, it will be folded at the crease, so subsequent storage will be normal, there will be no disturbance in the storage, and jams will not occur. Prevented. Therefore, there is no need for the operator to check the accommodation status.

In the above example, the sensor 8a detects the leading edge of the continuous paper 1a and the counter 16 detects the feed amount S2 of the tractor 4 to detect that the leading edge of the continuous paper 1a has reached the bottom of the stacker 5b. Detection method 1 For example, as shown in FIG.
A method may also be adopted in which the leading edge of the continuous paper 1a is detected by a sensor 8b provided outside the continuous paper 1a.

Further, in the above example, the belt mechanism 98 causes the continuous paper 1a to
Although the case where the tip of the sheet is moved horizontally in the direction opposite to the first fold line has been described, other moving methods 1, such as those shown in FIGS. 7 to 9, may also be used.

That is, FIG. 7 shows a method of arranging rollers R and rotating them in a desired direction, and FIG. 8 shows a method of arranging rollers R and rotating them in a desired direction, and FIG. 8 shows a swinging mechanism 9b that tilts the bottom surface of the stacker 5e from side to side. , a method of guiding the leading edge of the continuous paper 1a by sliding it; FIG. 9 shows a mechanism in which air is blown by exposing the nozzle 93.94 from the hole 80.81 with a stunning force of 5f; This method moves the leading edge of the continuous paper 1a by blowing air from above.

Furthermore, in the above example, the case where the potentiometer 73 was used as the fold direction discrimination sensor 7a was explained, but other methods may also be used (although not shown, for example, a piezoelectric element may be fixed to the tip of the lever to continuously detect the fold direction). A method may also be used in which a change in current output from a piezoelectric element is measured and detected in accordance with a change in pressure caused by folds in the paper 1a.

[Effects of the Invention] As explained above, according to the present invention, the leading edge of the continuous paper stored in the storage section can be moved in the opposite direction to the first fold, so that the paper cannot be folded normally at the fold. This has the effect that it is possible to prevent the continuous paper from falling out of the storage section, there is no possibility of jamming, and therefore there is no need for confirmation checks by the operator.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of the present invention; FIG. 2 is a diagram showing an embodiment of the invention; FIG. 3 is a diagram showing the main parts of the embodiment; FIG. 4 is a flowchart of the embodiment; 6 to 9 are side views showing different embodiments (1) to (4); FIG. 10 is a side view showing an outline of a line printer to which the present invention is applied; FIG. 11 is an explanatory diagram of a conventional example. In the figure, 1.1a is continuous paper, 5 is a storage unit, 7 is a discrimination means, 7a is a fold direction discrimination unit 8 is a detection means, 9 is a moving means, 9b is a swinging mechanism, 16 is a counter, and R is a roller. show. 4 is a tractor; 58 to 5f are stackers; 8a and 8b are sensors; 9a is a belt mechanism 11; 93.94 is a nozzle; FIG. Figure 2 of Tsumeguchi (T no 1) Diagram 2 (T no 2) showing an example of the alteration of wood disputes. 1) Surface layer Cb)'<
Fig. 6 Fig. 7 Fig. 7 Elevation U tip 11 (3) J shown ↑ 1 side view Example (4s)
Figure 9: Flow + Yard for the example shown in Figure 4 (ill) Figure 11: Explanatory diagram of conventional single row

Claims (1)

[Scope of Claims] In an apparatus for transporting folded continuous paper (1), subjecting it to predetermined processing, and then accumulating and storing it in a storage section (5), the crease of the first fold of the continuous paper (1) is provided. a determining means (7) for determining the direction; a detecting means (8) for detecting that the leading edge of the continuous paper sheet (1) has reached the bottom surface of the storage section (5);
) is provided on the bottom surface of the continuous paper (1) and moves the leading edge of the continuous paper (1) in the horizontal direction, and when the detection means (8) detects the leading edge of the continuous paper (1), The moving means (9) moves the leading edge of the continuous paper (1) in a direction opposite to the fold direction determined by the determining means (7).
A paper stacking mechanism characterized in that the paper stacking mechanism is moved by.