JPH07108583B2 - Front inserter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front inserter for feeding cut printing paper to a printer, and more particularly to a stopper mechanism for stopping the printing paper.

[Prior Art] Conventionally, in a front inserter of this type, a vertically movable guide plate 3 is lifted along a guide rail 2 to avoid a carriage while the printer is operating, and a print sheet is printed.
It was lowered along the guide rail 2 only at the time of inhaling 16. Therefore, in order to suck the printing paper 16, the guide plate 3 is first lowered along the guide rail 2 against the spring 18 and the switch 17 arranged near the lower end of the guide rail 2 is turned off. Then, when the printing paper 16 is supplied to the guide pocket 1, the sensor 4 installed under the guide pocket 1 detects the printing paper 16 and is turned on. In response to the switch 17 being off and the sensor 4 being on, the pressure roller 7 arranged below the platen 5 is rotated in the direction of arrow A in order to eliminate the deviation of the printing paper 16 and the pressure is applied. The feed roller 8 arranged near the roller 7 was rotated in the direction of arrow B. The rotation of the pressure roller 7 and the rotation of the feed roller 8 are the same in different directions, so that the guide plate between the guide panels 9 and 10 or the bottom plate arranged between the lower surface of the frame 6 and the base housing 15.
The printing paper 16 was sucked into the guide passage between 13 and 14. The printing paper 16 was discharged downward after the printing operation was completed.

[Problems to be Solved] In the above-described conventional front inserter, since the guide passage between the guide panels 9 and 10 and the guide passage between the bottom plates 13 and 14 are constantly communicated with each other, the guide pocket 1 is provided below the guide pocket 1. It is necessary to suck the printing paper 16 until the upper end of the printing paper 16 is detected by the installed sensor 4 and then feed the printing paper 16 back upward to adjust the suction amount of the printing paper 16 It has the drawback of being extremely complicated.
When the printing paper 16 is discharged upward, the printing paper 16 falls into the housing from between the pressure roller 7 and the feed roller 8 or the guide panel 9 when the pressing force of the pressure roller 7 and the feed roller 8 is removed. , 10 between guide passages or bottom plates 13, 14
There is a drawback that the guide passage between them is blocked, and there is a drawback that the space inside the housing is small and the removal work is difficult because of the built-in printer, and as a result, the discharge work of the printing paper can be done only downward. is there.

[Means for Solving Problems] In order to solve the above-mentioned conventional problems, the present invention simplifies and extends the work of setting the suction amount of the printing paper by disposing a stopper mechanism in the guide passage of the printing paper. In addition, the present invention provides a novel front inserter which simplifies and speeds up the suction work, and at the same time prevents the printing paper from dropping during upward discharging and substantially secures the upward discharging of the printing paper.

To this end, the present invention is directed to a front inserter that sucks in print paper guided from above via a vertically movable guide plate by pressure rollers and feed rollers that rotate in different directions by the same amount and discharges the suctioned print paper. In the present invention, there is provided a front inserter characterized by comprising a stopper mechanism for opening and closing a guide passage between guide panels arranged below the pressure roller and the feed roller.

EXAMPLES Next, the present invention will be described with reference to the drawings.

FIG. 1 and FIG. 2 are side views of an embodiment of the front inserter of the present invention, showing the case where the stopper mechanism is in the open state, that is, the non-operating state, and the closed state, that is, the operating state. ing.

First, the case where the print sheet is supplied, that is, sucked, will be described.

When the printing paper 16 is a copy paper or the like having a weight of ten or more sheets and the lower end of which is not glued, the guide plate 3 which can be raised and lowered along the guide rail 2 is springed before the printing paper 16 is fed to the guide pocket 1. It is pushed down while resisting 18. The guide plate 3 is stopped at the lower end of the guide rail 2. When the guide plate 3 is lowered, the switch 17 arranged near the lower end of the guide rail 2 is turned off. When the switch 17 is turned off, the solenoid 12 of the stopper mechanism arranged on the lower surface of the frame 6 is de-energized, and the stopper 11 of the stopper mechanism arranged near the lower ends of the guide panels 9 and 10 is rotated. It The bottom plate disposed between the lower surface of the frame 6 and the base housing 15 is opened at its lower end by the rotation of the stopper 11 to open the guide passage for the print paper formed by the guide panels 9 and 10.
It is communicated with the guide passage of the printing paper formed by 13, 14 (see FIG. 1).

When the print paper 16 is supplied to the guide pocket 1, the sensor 4 installed at the lower part of the guide pocket 1 causes the print paper 16 to move.
The lower end of is detected and turned on. Since the switch 17 is off at this time, the pressure roller 7 arranged at the lower end of the platen 5 is rotated in the direction of arrow A, and the feed roller 8 arranged near the pressure roller 7 is indicated by arrow B.
Is rotated in the direction. The rotations of the pressure roller 7 and the feed roller 8 are the same in different directions, so that the printing paper 16 can be sucked into the guide passage between the guide panels 9 and 10 or the guide passage between the bottom plates 13 and 14. The printing paper 16 is sucked in until the upper end passes the position of the sensor 4. As a result, the sensor 4 is turned off, and the suction amount adjustment work is started with the upper end of the printing paper 16 as a reference. Printing paper 16
When the inhalation amount of reaches the set value, an appropriate printing operation is started.

When the printing paper 16 is a single-cut sheet or a copy paper with the lower end glued, the guide plate 3 is pushed up along the guide rail 2 by the spring 18 before feeding the printing paper 16 to the guide pocket 1. To be done. Guide plate 3
Is stopped at the upper end of the guide rail 2. As the guide plate 3 rises, the switch 17 arranged near the lower end of the guide rail 2 is turned on. When the switch 17 is turned on, the solenoid 12 of the stopper mechanism is excited and the stopper 11 is rotated. The rotation of the stopper 11 closes the guide path for the printing paper formed by the guide panels 9 and 10 at its lower end, and the lower surface of the frame 6 and the base housing.
It is closed to the guide path of the printing paper formed by the bottom plates 13 and 14 which are arranged between 15 and 15 (see FIG. 2).

When the printing paper 16 is supplied to the guide pocket 1, the lower end of the printing paper 16 reaches the stopper 11 via the guide passage between the guide panels 9 and 10 and is stopped. This enables printing paper 16
The suction amount C can be easily set, and at the same time, the work of sucking the printing paper 16 for the set suction amount C can be simplified.

Next, the case where the printing paper is discharged will be described.

When the printing paper 16 is a copy paper or the like having a weight of more than 10 sheets and the lower end not being glued, as is apparent from the above, since the stopper mechanism is in the non-operating state during the suction work, the downward discharge can be performed as it is. Good. When discharging upward,
At the end of the discharging operation, the stopper mechanism may be operated by an appropriate means to close the guide passage between the guide panels 9 and 10 at its lower end. As a result, the printing paper 16 to be ejected upward is transferred to the pressure roller 7 and the feed roller 8.
It can be stopped even if it accidentally falls from between.

When the printing paper 16 is a single-cut sheet or a copy paper with the lower end glued, as is clear from the above, the stopper mechanism is in an operating state during the suction work. In operation, the guide passage between the guide panels 9 and 10 may be opened at its lower end to communicate with the guide passage between the bottom plates 13 and 14. As a result, the printing paper 16 can be discharged downward. On the other hand, the upward discharge is
You can just run it. Even if the print sheet 16 to be discharged upward is accidentally dropped between the pressure roller 7 and the feed roller 3, it can be stopped by the stopper mechanism in the operating state.

It should be noted that when the printing paper 16 is, for example, a copy paper which has a weight of more than 10 sheets and the lower end is not glued, the upper discharging work and the printing paper 16
When the sheet is a single-cut sheet or a copy sheet with the lower end glued, the downward discharging operation may be labor-saving.

[Advantages of the Invention] As is apparent from the above, the present invention provides a print sheet by providing a stopper mechanism in the guide path of the print sheet below the pressure roller and the feed roller for sucking and discharging the print sheet. Since the guide passage is closed by the stopper mechanism to set the suction amount of the printing paper at the time of sucking the printing paper, there is an effect that the sucking work of the printing paper can be simplified and speeded up. Since the guide passage is closed after the lower end of the printing paper passes through the position (1), the printing paper can be prevented from dropping after the operation of the pressure roller and the feed roller is stopped.

[Brief description of drawings]

FIG. 1 and FIG. 2 are side views of an embodiment of the front inserter of the present invention, showing a case where the stopper mechanism is in a non-operating state and an operating state, respectively. FIG. 3 is a side view of the conventional example. 1: Guide pocket, 2: Guide rail 3: Guide plate, 4: Sensor 5: Platen, 6: Frame 7: Pressure roller, 8: Feed roller 9, 10: Guide panel 11: Stopper 12: Solenoid 13, 14: Bottom Plate 16: Printing paper 17: Switch

Claims (1)

[Claims] 1. A front inserter for sucking a print sheet guided from above via a vertically movable guide plate by a pressure roller and a feed roller which rotate in different directions by the same amount and discharging the sucked print sheet. A front inserter comprising a stopper mechanism for opening and closing a guide passage between guide panels arranged below the pressure roller and the feed roller.