JPH05170373A - Sheet processing device - Google Patents

Abstract

PURPOSE:To improve operatability such as supply of a sheet without causing complication of structure and cost increase. CONSTITUTION:A sheet recording part R is provided in a device main body 10, a sheet supply board 13 is provided on the front surface side of the device main body 10 and simultaneously, a sheet discharge board 18 is provided on the back side of the device main body 10. Additionally, a motor free to drive reciprocally to rotate a supply side feed roller 14 and a discharge side feed roller 16 is furnished, and simultaneously, a control means to reverse the feed rollers 14, 16 by way of controlling the motor is furnished. Thereafter, after a sheet S transported from the front surface side by way of normally rotating the feed rollers 14, 16 is recorded at the sheet recording part R as required, the feed rollers 14, 16 are reversally rotated by way of actuating the control means, the recorded sheet S is switched back and returned to the sheet supply board 13 and discharged on it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a printer, a copying machine,
The present invention relates to a sheet processing apparatus, such as a printing machine or a punching machine, that performs printing, transfer, printing, and punching on a sheet.

[0002]

2. Description of the Related Art Conventionally, for example, in a printer, a sheet supply table is provided on the front side of the main body of the apparatus while a sheet discharge table is provided on the back side to supply sheets from the sheet supply table on the front side. The sheet discharge tray is provided on the front side, while the sheet supply tray is provided on the front side, and the sheet feed table is provided from the back side. There is a post-feeding type before-paper feeding type that feeds and discharges to the front side.

Among them, the pre-feed and post-delivery type supplies sheets from the front side, so that the sheet feeding operation is simple.
Further, it is suitable when it is not necessary to check the recording state of the sheet after recording. Further, when a large amount of recording is performed, there is an advantage that a large paper ejection tray that interferes with the paper feeding operation may be installed on the back side. On the other hand, in the before-post-feeding type, the sheet is ejected to the front side, so that the recording state of the after-recording sheet can be easily confirmed, and it is convenient to take out the after-recording sheet. ..

[0004]

However, these conventional printers are contradictory to each other in their advantages and disadvantages, and those of the pre-paper feeding and post-discharging type are able to check the recording state of the post-recording sheet and check the post-recording sheet. On the contrary, it is inconvenient to take out the paper.On the contrary, the paper ejection type before post-paper feeding is inconvenient when it is not necessary to check the recording state of the post-recording sheets one by one or when a large amount of recording is performed. It was unsuitable.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned disadvantages of the conventional sheet processing apparatus such as a printer without increasing the complexity and cost of the apparatus, and to perform operations such as sheet feeding. It is to further improve the sex.

[0006]

Therefore, what is stated in claim 1 is, for example, as shown in the following illustrated embodiment,
The sheet S supplied from the front side is fed to the feed roller 14.1.
In the sheet processing apparatus, in which the sheet S is processed by a sheet processing unit such as the sheet recording unit R while being conveyed by 6, and then the sheet S is discharged to the back side, the feed rollers 14 and 16 can be reversed. In addition, it is characterized by comprising control means for reversing the feed rollers 14 and 16 to switch back the processed sheet S.

According to a second aspect of the present invention, for example, as shown in the following illustrated embodiment, in the sheet processing apparatus of the first aspect, a sheet supply table 13 for supplying the sheet S is provided, and the sheet supply table 13 is provided. It is characterized in that the upper surface of the tip 13a is inclined forward.

According to a third aspect of the present invention, for example, as shown in the following illustrated embodiment, in the sheet processing apparatus of the first aspect, a sheet supply table 13 is provided, and the sheet supply table 13 is connected to the sheet S. It is characterized in that it is movable to a supply position for supplying and a receiving position for receiving the switched-back sheet.

According to a fourth aspect of the present invention, for example, as shown in the following illustrated embodiment, in the sheet processing apparatus according to the third aspect, the sheet supply table 13 is made rotatable and a cam 22 is used. It is characterized by comprising an operation lever 23 for rotating the sheet supply table 13 to move to the supply position or the receiving position.

[0010]

Then, the sheet S supplied from the front side is processed by the sheet processing unit while being conveyed by the feed rollers 14 and 16, and then the sheet S is discharged to the back side. In that case, in the sheet processing apparatus according to the first aspect, if necessary, the processed sheet S is switched back by operating the control means to reverse the feed rollers 14 and 16.

According to the second aspect of the present invention, at the time of the switchback, the sheet S is guided by the inclined leading end 13a of the sheet supply base 13 and received by the sheet supply base 13.

According to the third aspect of the invention, the sheet S is supplied with the sheet supply table 13 as the supply position, and the sheet S to be switched back is received as the post-processing receiving position.

According to the fourth aspect, the sheet S is supplied with the sheet supply table 13 as the supply position. To check the processing status of the sheet S, use the operating lever 23 to
The sheet supply table 13 is moved to the supply position via the position 2, and the sheet S to be switched back is received at the receiving position.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an overall schematic configuration of a serial printer which is an embodiment of the sheet processing apparatus of the present invention. Reference numeral 10 in the figure denotes the apparatus main body. The apparatus main body 10 has a platen 11 arranged substantially at the center thereof. The print head 12 is arranged above the platen 11. The print head 12 is
Although not shown, it is mounted on a carriage and can be reciprocated in the length direction of the platen 11 by a carriage driving motor. Then, the platen 11, the print head 12, and the like form a sheet recording unit (sheet processing unit) R.

The front side of the apparatus body 10 (right side in the figure)
Is provided with an operation panel (not shown) and a sheet supply table 13 for setting the sheet S. The sheet supply base 13 forms a guide surface 13b by inclining the upper surface of the leading end (the left end in the drawing) 13a toward the front. The sheet S is fixed at a substantially horizontal supply position.
A feed side feed roller 14 and a feed side pressure roller 15 pressed against the feed roller 14 are arranged between the sheet feeding table 13 and the platen 11. And
Both rollers 14 and 15 are arranged such that their roller contact portions P coincide with the supply position of the sheet supply table 13. On the other hand, on the side opposite to the supply side rollers 14 and 15 with the platen 11 interposed therebetween, a discharge side feed roller 16 and a discharge side pressure roller 17 pressed against the feed roller 16
To place. Further, a sheet discharge table 18 is provided on the left side of the discharge side rollers 16 and 17 in the figure, that is, on the back side of the apparatus body 10.

Although not shown, a feed roller driving motor capable of forward and reverse driving is provided in the main body 10 of the apparatus, and the driving force of the motor is transmitted through a gear train to feed the feed rollers 14 and 16. Forward and reverse rotation is possible. Further, the feed roller driving motor is electrically connected to the control means for controlling the forward / reverse driving. And this motor
Immediately after the sheet S passes through the position of the sheet recording portion R, the control means controls the feed rollers 14 and 16 so that they can rotate in the reverse direction.

In the serial printer described above, when recording on the sheet S, after setting the sheet S on the sheet supply table 13, the feed roller driving motor is driven by an external operation of the operation panel. The feed rollers 14 and 16 are rotated in the normal direction, and the pressure rollers 15 and 17 are driven to rotate. Then, as shown in FIG. 2, the sheet S is fed from the front side between the supply side rollers 14 and 15 to be fed, conveyed in the direction of the arrow orthogonal to the length direction of the platen 11, and as shown in FIG. The platen 1
The sheet S is recorded on the sheet S by the print head 12 and then conveyed by the ejection side rollers 16 and 17, and the sheet ejection table 1 is conveyed.
Discharge up to 8. In this case, when it is not necessary to check the recording state of the post-recording sheet S one by one or when a large amount of recording is to be performed and ejected, the post-recording sheet S is directly transferred to the sheet ejection table 18 on the back side as shown in FIG. And then it is discharged and stacked on top of it.

On the other hand, when it is desired to confirm the recording state of the post-recording sheet S, the operation panel is externally operated in advance to activate the control means. Then, the supply side roller 14,
After recording 15 on the sheet S fed in the normal direction and fed and conveyed from the front side in the sheet recording unit R, the trailing edge of the sheet S after recording is appropriately detected by the detecting means, and the feed is performed based on the detection signal. The roller driving motor is once stopped, the forward rotation of the supply side rollers 14 and 15 and the discharge side rollers 16 and 17 is stopped with the rear end of the sheet S after recording, and then the rollers 14 to 17 are reversed. Then, as shown in FIG.
After recording, switch the sheet S back to the front side,
The sheet is discharged onto the sheet supply table 13. At that time, the post-recording sheet S is smoothly guided onto the sheet supply table 13 along the guide surface 13b without being caught by the sheet supply table 13.

In the illustrated embodiment described above, the sheet supply table 13 is fixed to the supply position. However, the present invention allows such a sheet supply table to be movable as shown in the illustrated embodiment below. Good.

In another embodiment, as shown in FIG.
The sheet supply table 13 is rotatably supported by a fixed shaft 20 having a base end 13c inserted therethrough with the fixed shaft 20 as a fulcrum. Below the sheet supply table 13, a rotary shaft 2 parallel to the fixed shaft 20 is provided.
1 is set. The rotating shaft 21 has a cam 22 at its eccentric position.
And the peripheral surface of the cam 22 is brought into contact with the lower surface of the sheet supply table 13. At the end of the rotary shaft 21, the operation lever 2
Attach 3. On the left and right sides of the operating lever 23 in the figure,
Stoppers 24 and 25 are provided respectively, and these stoppers 2
The rotation angle range of the operation lever 23 is restricted by 4 ・ 25. One end of the operating lever 23 is fixed to the lower fixing pin 2
The other end of the spring 27 which is hooked on 6 is hooked.

In the other embodiment, however, when the sheet S is supplied from the sheet supply base 13, the operation lever 23 is rotated in the clockwise direction in the figure in advance as shown in FIG. The sheet feed table 13 is brought to the illustrated feeding position by hitting and stopping the stopper 25. Then, it is biased by the spring 27 and held at this supply position. After that,
The sheet S is supplied from above the sheet supply table 13.

On the other hand, when the sheet S after recording is switched back, when the trailing edge of the sheet S is detected, the rollers 14 to 17 are stopped based on the operation of the control means and the operation of the operation lever 23 is notified. Then, as shown by the arrow in FIG. 6, the operation lever 23 is rotated counterclockwise in the figure and abutted against the left side stopper 24 to be stopped.
3 is a receiving position shown below the roller contact portion P. Then, it is biased by the spring 27 and held at this sheet receiving position. Then, the presence of the sheet supply table 13 at the receiving position is appropriately detected by the detecting means, and then the rollers 14 to 17 are reversed. Then, after recording, the sheet S is switched back and discharged to the sheet supply table 13 and received by the sheet supply table 13.

In this embodiment, the sheet supply table 13
Was manually moved, but it may be automatically moved. In that case, for example, at the time of switching back the post-recording sheet, after detecting the trailing edge of the post-recording sheet and stopping the feed rollers, the feed rollers are reversely rotated, and the driving means is appropriately operated to rotate the operation lever. And the sheet supply table is automatically moved to the receiving position.

[0024]

As described above, according to the present invention, after the sheet supplied from the front side is processed by the sheet processing section, the processed sheet is discharged to the back side as it is, and the processed state of the processed sheet is obtained. When you want to check the sheet, you can switch back to the back side, so it is convenient to feed paper when ejecting from the front side to the back side as needed, and it is also possible to process the processed sheets. It is possible to improve the operability such as feeding when it is not necessary to check the state one by one or when a large number of processed sheets are discharged. On the other hand, when switching back, the processing state of the processed sheet can be easily confirmed. As a result, in the sheet processing apparatus, it is possible to eliminate the conventional operational disadvantages such as sheet feeding, and further improve the operability of sheet feeding and the like. Moreover, according to the present invention, since the sheet conveying passage, the conveying direction switching means, and the like are not added, it is possible to improve the operability such as sheet feeding without inviting a complicated structure and a high cost. it can.

According to the second to fourth aspects, the processed sheet which has been switched back and returned to the front side can be smoothly received by the sheet supply base without being caught by the sheet supply base. You can

[Brief description of drawings]

FIG. 1 is an overall schematic configuration diagram of an internal mechanism of a serial printer which is an embodiment of the present invention.

FIG. 2 is a diagram illustrating a sheet supply state of the printer.

FIG. 3 is an explanatory diagram of a discharge state after sheet recording of the printer.

FIG. 4 is a diagram illustrating a sheet switchback state of the printer.

FIG. 5 is a configuration diagram showing a moving mechanism of a sheet supply table in a serial printer which is another embodiment of the present invention.

FIG. 6 is a state explanatory view when the sheet supply table is moved to a sheet receiving position.

[Explanation of symbols]

 13 sheet supply table 13a tip of sheet supply table 14 ・ 16 feed roller 22 cam 23 operation lever S sheet R sheet recording section (sheet processing section)

Claims (4)

[Claims] 1. A sheet processing apparatus for carrying out a sheet fed from the front side by a feed roller, processing the sheet in a sheet processing section, and then discharging the sheet to the back side, in which the feed roller is reversed. A sheet processing apparatus that includes a control unit that enables the feed roller to reversely rotate and switch back the processed sheet. 2. A sheet supply table for supplying a sheet is provided,
The sheet processing apparatus according to claim 1, wherein the top surface of the leading end of the sheet supply table is inclined forward. 3. The sheet processing apparatus according to claim 1, wherein a sheet supply table is provided, and the sheet supply table is movable between a supply position for supplying the sheet and a receiving position for receiving the switched-back sheet. 4. The sheet supply table is rotatably provided with an operation lever for rotating the sheet supply table via a cam to move to the supply position or the receiving position. The sheet processing apparatus according to item 3.