JPS61222769A - Automatic paper-supplying device for perfect printing - Google Patents

Abstract

PURPOSE:To perform perfect printing, by providing a primary containing box for containing papers printed on the face side, a transverse-direction reversion containing box, a longitudinal-direction containing box and a reversing roller. CONSTITUTION:A paper printed on the face side thereof is contained into the primary containing box 2 by a switching lever 10, is reversed in the transverse direction by a transverse-direction reversing roller 5, and is transferred into the longitudinal-direction containing box 3. Further, the paper is reversed in the longitudinal direction by a longitudinal-direction reversion roller 6, is trans ferred into a longitudinal-direction reversion containing box 4, is fed to a platen 12 by the box 4, and is printed on the back side thereof. The paper printed on both sides thereof and fed out from a discharging roller 11 is automatically switched by the lever 10, and is fed out to a stacker 7. Accordingly, where an automatic paper-supplying device and a reversing device are combined with each other as one body, the paper can be printed alternately on the face side and the back side and contained into the stacker 7, under control from a CPU.

Description

[Detailed description of the invention] The present invention relates to a double-sided printing automatic paper feeding device for a printer.

The demand for printers has been remarkable recently, and it is now common knowledge that when cut paper is used, printing is performed on one side of the paper.

These printers are single-sided printers that feed paper only in one direction and on one side, and in the case of two-sided printing, it is necessary to flip and replace each sheet.

Furthermore, the automatic sheet feeder for cut sheets that has been in use recently is one-sided, one-way type, and two-sided printing cannot be performed as is.

The present invention was developed to solve these impossible problems, and a sheet of paper is separated and fed out from a hopper containing new paper, and the direction is changed by a switching lever on the upper part of the discharge roller, and the paper is fed into a reversing mechanism. At this point, the paper is reversed and sent to the platen section again to print on the back side.The paper that has been printed on both sides and sent out from the ejection roller can be automatically switched with a switching lever and sent to the stacker side. It is possible to print on both sides of a sheet of paper.

If the automatic paper feeding device and the reversing device are combined and integrated in this way, the front and back sides can be printed alternately under the control of the CPU and stored in the stacker.

If it is possible to print on both sides of a single sheet of paper, the amount of paper used can be roughly halved, saving stamp costs for mailing, improving storage efficiency in archives, and contributing to effective use of floor space.

Next, its operation will be explained based on an embodiment shown in the drawings.

FIG. 1 is an explanatory structural diagram, in which a new paper is accommodated in the paper picker and fed out by a rubber roller.The paper passes through the guide plate 8 and reaches the spout of the platen, where printing is performed.

When printed and sequentially sent out, the direction is determined by the switching lever 10 via the ejection roller 11, and the leading end is sent into the primary storage box 2.

When the rubber rollers built into the pokuku continue to bit in and the bag is completely accommodated, it is bitten and sent out by the rotation of the horizontal reversing roller 5 under the command of the CPU, and is sent into the horizontal reversing storage box 3.

When the transfer is completed, the built-in roller rotates and the paper is fed into the vertical storage box 4.

A built-in roller sends its tip to the platen's injection port, and a sensor activates to stop the motor, thus stopping paper feeding.

At this time, the paper is completely reversed and the back side is sent out to the printing surface of the platen. After printing on the back side, the paper passes through the discharge roller 11, and then the destination direction is switched by the switching lever lO, and the paper is discharged in the direction of the stacker 7.

Figure 2 shows the transport of paper with printing only on the front side.
2) They are printed and stored in the order of letters a<v>.

Figure 3 shows the state in which paper with double-sided printing is transported in the following order: (A) (B) (C) (E)

FIG. 4 shows an example of 30 inverted storage boxes. The appearance of the box 3 is provided with a comb roller shaft 13 in the vertical direction, and a rubber roller 14 and a Cheno foil 15. Fix bevel gear 18.

Also, a rubber roller shaft 16 is provided in the outer lateral direction, and the rubber roller 17 and the bevel gear 18' are connected to the roller shaft 16.

Lever 19 on the opposite side of the box. Feed roller 20. Solenoid 21. A return spring 22 is provided, and the operation of the solenoid 21 brings the rubber roller 20 into contact with the back side rubber rollers 14 and 17 by scissoring the paper.
The paper is sent out during the first suction time.

-Next storage box 2. The vertically inverted storage box 4 is also provided with a similar transmission mechanism.

The details of its operation will be explained below.

A new sheet of paper is placed in the hopper 1, and a rubber roller is rotated by a motor 26 by a control circuit, and the contact pressure of the rubber roller separates one sheet of paper and feeds it out onto the platen 12.

The paper is sent through the guide plate 8, and when the leading edge of the paper reaches the spout of the platen, the detection circuit is activated and the motor 26
It will stop and paper feeding will also stop.

Subsequently, the printer 9 operates in response to a signal from the control circuit via the CPU, and performs predetermined printing.

The leading edge of the paper reaches the discharge roller 11 and is sent out.

At this time, since the switching lever 1O, which is provided next, is operated in response to the back side printing command, the leading edge of the paper is fed into the primary storage box.

When the leading edge of the paper enters the box, it is detected by a sensor and the paper feeding motor 23 begins to rotate.

When the paper reaches the back of the storage box, the sensor activates the control circuit, operates the solenoids 22 of the feed roller group 19 to 22, and the feed roller 20 comes into contact with the rubber roller 14 rotating by the interlocking shaft 25, and the paper is moved inside. Feed the pinched paper horizontally to the left.

Its tip contacts the outer periphery of the rotating horizontal reversing roller 5, rotates, and sends it out into the horizontal reversing storage box 3. It is further sent by an internal roller, and when the right end hits the box, the control circuit is activated by the senna. A group of feed rollers 19
The twist/id 22 of ~22 operates to bring the rotating rubber roller 17 and feed roller 20 into contact, and feed the paper being pinched to the rotating vertical reversing roller 6.

The paper with one-sided printing is sent out by the outer periphery contact friction as the roller 6 rotates and is fed into the vertical reversal storage box 4 from above, where it is passed by a vertical feeding rubber roller 17 and a group of paper feeding rollers 19 installed inside the box. When the leading edge of the paper reaches the blowing section of the platen, the control circuit is operated by the sensor and the motor 23 is stopped.

The paper printed on the front side in this manner is reversed by the rollers in the box as well as a reversing roller, etc., and when it reaches the platen, normal printing is performed on the back side by the printer control circuit.

When printing on the back side is performed and the leading edge of the paper reaches the discharge roller 11 and is then fed out, the switching lever lO is moved to the stacker 7.
Since the paper is switched to the feeding direction, the paper is sequentially stored in the stacker 7.

Next, regarding the reversing section, when the paper with prints on its surface reaches the entrance of the primary storage box 2, a sensor detects this and operates a control circuit to rotate the motor 23.

The horizontal rubber roller shaft 13 is rotated by the Cheno wheel 15 and the Cheno wheel 24, and therefore the rubber row 17 is also rotated synchronously.

When a command to horizontally or vertically feed the paper in each box comes from the control circuit, the solenoids 21 of the paper feed roller group 19 to 22 suck the paper, and the feed roller 20 freely attached to the tip of the lever 19 moves the paper. is pressed against the rotating rubber roller 17, so it is sent out in the direction of rotation.

When paper is sent out from each storage box, solenoid 2
1 is no longer energized, the lever 19 is pulled up by the return spring 22, and the feed roller 20 is separated from the rotating rubber roller 14 or 17.

By specifying the destination using the switching lever lO in this manner, printing can be performed on only the front surface of the paper or on both sides.

As described above, the present invention allows paper to be reversed with simple operation and in a small space, and can also be housed in the front stage of an automatic paper feeder that is currently in use, and can print automatically on both sides of the paper freely using a control circuit. It is a convenient device that can be used.

Next, the effects of the present invention can be listed as follows: - Paper consumption can be saved. You can save simple thoughts.

Thirdly, when documents are filed and stored, there is less bookshelf space, so floor space can be used more effectively.

Therefore, if the two devices are widely used in the OA industry, it will save resources from a national standpoint, and each company will save costs, which will greatly benefit society.

[Brief explanation of drawings]

Figure 1 is an explanatory general arrangement structure diagram, Figure 2 is an explanatory diagram of the flow of paper with front side printing only, Figure 3 is an explanatory diagram of the flow of paper with back side printing, and Figure 12g is an explanation of the horizontally inverted storage box. FIG. 1 Hopper 2 - Next storage box 3 Horizontal reversal storage box 4 Vertical reversal storage box 5 Horizontal reversal roller 6 Vertical reversal roller 7 Stacker 8 Guide plate 9 Printer 10 Switching lever 11 Ejection σ-roller 14 Rubber roller 15 Cheno foil group 16 JF rubber roller Shaft 17 Rubber roller 18 Bevel gear 18' Bevel gear 19 Lever 19' Lever 20 Feed roller 20' Feed roller 21 Lenoid 21' Lenoid 22 Return spring 22' Return spring 23 Motor 24 Cheno 25 Interlocking shaft 26, motor

Claims (1)

[Claims] In an automatic paper feeding device that automatically feeds paper one sheet at a time toward a platen of an office machine, prints on the front side of the paper, then reverses the paper and prints on the back side. In front of the hopper 1, which selectively feeds sheets of paper, there are provided a primary storage box 2, a horizontal reversal storage box 3, a vertical storage box 4, and reversal rollers 5 and 6, which store the surface-printed items. The stored paper is stored in the primary storage box 2 by the switching lever 10, reversed horizontally by the horizontal reversing roller 5, transferred to the vertical storage box 3, and then reversed vertically by the vertical reversing roller 6. The automatic paper feeder for double-sided printing transfers the paper to a vertical reversal storage box 4 and feeds it to a platen 12.