JPS621561A - Paper feed apparatus of printer - Google Patents

Abstract

PURPOSE:To enable the use of short slip paper and to reduce the printing-unable blank part of the slip paper, by mounting a paper feed change-over mechanism for selectively bringing a set of a drive roller and a pressure contact roller and a set of a feed roller and a press roller to an operable state. CONSTITUTION:In performing printing to slip paper P3, the slip paper P3 is arranged to the printing start position at the front surface of a receipt P1 in such a state that a press roller 45 is spaced apart from a roller 43 and a change-over lever 50 is changed over to be arranged at a position II. A pressure contact roller 6 is moved downwardly and the grasping state of the receipt P1 is released. The press roller 45 is moved to hold the slip paper P3 between the roller 43 and the roller 45 but the receipt P1 is not held therebetween because the left-and-right width thereof is narrow. When the push-down operation of a desired key is performed, a solenoid 35 is excited when a type 23 was opposed to a printing line position to perform printing. The feed roller 43 is rotated and the slip paper P3 is fed by one line by said roller 43 and the press roller 45 and, because the receipt P1 holds a stop state and is not fed, no excessive blank is generated on the receipt P1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feeding device for a printing machine used in a cash register or the like.

[Prior Art and Problems to be Solved by the Invention] In general, cash register printing machines print on receipts handed to customers and journals for recording sales. Sometimes it is required to print on a single slip called a . For this reason, in conventional printing machines, in addition to the two sets of printing machine grooves and paper feeding mechanisms for the receipts and journals, which are continuous papers, there is a separate position for the printing mechanism and paper feeding mechanism for single sheets. It was set up. Therefore, it was inevitable that the printing machine as a whole would become larger and more complicated.

In addition, in the past, the guide path for continuous paper and the guide path for cut paper were overlapped at the printing position, and one printing mechanism printed on both sheets, but a guide path that curved the continuous paper into a U-shape was used. A feed roller for the cut sheet must be installed outside the machine.

For this reason, the distance from the feed roller to the printing position becomes large, which limits the length of the cut paper that can be used, and creates a large margin on the cut paper that cannot be printed.

[Means for Solving the Problems] In order to solve the above conventional problems, the present invention provides a drive roller (4) and pressure rollers (6, 6) provided corresponding to the drive roller (4). ”) and continuous paper (P1
, P2); a continuous paper guide path (T>) that guides the continuous paper (P1, P2) fed by the continuous paper feed mechanism through the printing section; ) A pair of feed rollers (43) disposed outside on both sides in the width direction of the continuous paper (P1) guided and fed within ) and a pressure roller (45) provided corresponding to the feed rollers (43). and a cut sheet (P3)
A cut paper feeding mechanism is used to feed the cut paper, and the cut paper (P3) fed by the cut paper feeding mechanism passes through a part of the continuous paper guide path (T>) and reaches the printing section of the continuous paper (P1, P2>). A cut guide member (,21
>, and a paper feed switching mechanism that selectively enables the pair of the drive roller (4) and the pressure roller (6) and the pair of the feed roller (43) and the pressure roller (45). .

[Operation] With the above configuration, the present invention can selectively operate the continuous paper feed mechanism and the cut paper feed mechanism using the paper feed switching mechanism to feed continuous paper and cut paper. Continuous paper is guided through a continuous paper guide path by a continuous paper feed mechanism consisting of a drive roller and a pressure roller. The cut sheet is guided to the cut sheet guide member through a portion of the continuous sheet guide path by a cut sheet feeding mechanism including a feed roller and a pressure roller. In this case, since the feed rollers are disposed outwardly on both sides of the continuous paper in the width direction, the feed rollers can be disposed as close to the printing section as possible without being obstructed by the continuous paper. Therefore, even cut sheets with short lengths in the feeding direction can be used, and the margins on the cut sheets that cannot be printed can be made smaller.

[Embodiment] Hereinafter, an embodiment in which the present invention is embodied in a register printing machine will be described based on the drawings. A platen 2 is fixed between the frames 1 on both the left and right sides of the printing machine, and the platen 2 has a guide portion 2a extending almost horizontally, and a guide portion 2a extending substantially horizontally.
A printed portion 2b rising substantially perpendicularly from a is integrally formed. The front surface of the printing section 2b has a pair of left and right printing surfaces 2c, each of which has the width of a printing line for a plurality of digits A1 to 86.

As shown in FIGS. 2 and 3, a lower feed shaft 3 supported behind the platen 2 has a pair of left and right drive rollers 4. As shown in FIGS. A pressure roller 6 is rotatably supported at the tip of a support arm 5 rotatably supported below the left drive roller 4, and has a pressure roller 6 at a position in contact with the upper drive roller 4 and at a position away from it. It is possible to move between A pressure roller 6-, which presses against the right drive roller 4, is rotatably supported at a fixed position below the drive roller 4 on the right side. A leaf spring 7 disposed below the support arm 5 applies a spring force to the support arm 5 in the direction in which the pressure roller 6 is pressed against the drive roller 4 . A switching cam 9 is fixed to an operating shaft 8 disposed above the support arm 5, and when the switching cam 9 is placed at the solid line position in FIG. Together,
When the pressure roller 6 is separated from the drive roller 4 against the spring force of the leaf spring 7 and the switching cam 9 is placed at the position indicated by the two-dot chain line, the switching cam 9 is separated from the support arm 5 and the leaf spring The pressure roller 6 is brought into pressure contact with the drive roller 4 by the spring force 7. When the left and right pressing ports 6, 6 contact the opening drive roller 4 in this way, the receipt P1 is created by the cooperation of the left and right pressing ports 4.6.6. The journal P2 is fed upward from the lower surface of the guide portion 2a along both printing surfaces 2G.

A guide plate 10 is disposed below the guide portion 2a, and cooperates with the guide portion 2a to guide the receipt P1 and the journal P2. An elastic plate 11 is fixed to the tip of the guide position 10, and the tip elastically lightly presses the receipt P1.

A pair of left and right support frames 7 are provided at both front sides of the platen 2.
1 are arranged, and first to fourth support shafts 12 to 15 are supported between their four corners.

Six toothed boobies 917 are fixed on the left and right sides of the second support shaft 13, and the remaining first... Six conventional boots 916, 18, 19 are attached to the left and right sides of the third and fourth support shafts 12, 14, 15, respectively. The four pulleys 16 to 19 corresponding to each digit constitute six sets of pulley units on the left and right sides. A type belt 20 made of an elastic material is supported around each pulley unit. Those type belts 20 are attached to pulleys 17
．． 16 are substantially parallel to the printing surface 2C and facing the printing surface 2C, the front running portion 20a and the boos 916, 18
The upper running portion 20b has a substantially horizontal space.

The pulleys 18 and 19 are supported in a circular motion so that a rear running part 20G is parallel to the front running part 20a, and a lower running part 20d is formed between the pulleys 19 and 17, which is slightly lower than the front running part 20a. Therefore, a space S is formed inside each type belt 20. Between the front running portion 20a and the printing surface 2C is a continuous paper guide path T for guiding the receipt P1 and journal P2 to a printing point corresponding to a printing hammer 38, which will be described later.

A large number of engagement teeth 22 are continuously formed on the inner peripheral surface of each type belt 20 and mesh with the engagement teeth of the toothed pulley 17. Accordingly, the rotation of the second support shaft 13 with its toothed boot 917 causes the type bells 1 to 20 to revolve on the pulley unit. Further, a large number of type characters 23 are integrally formed on the outer peripheral surface of the type belt 20. In addition, each type belt 2
At the same position as 0, a portion 24 is provided after the printed character.

Guide plates 25 are fixed to each of the pulleys 16 to 19 so as to be located on both sides of each type belt 20 to prevent the type belt 20 from coming off the pulleys 16 to 19.

As shown in FIG. 1, a motor 26 is fixed to one of the frames 1, and a gear 27 on the motor shaft meshes with an idle gear 28. As shown in FIG. And that idle gear 2
8 is the gear 2 coaxial with the idle gear 28.
9 and another gear 30 meshing with the gear 29, the toothed boo 917 is transmitted to the second support shaft 13 as the second support shaft 13 rotates.
As a result of the rotation, each type belt 20 is rotated all at once in the direction of arrow Q in FIG. The rotation of the idle gear 28, that is, the rotation of the gear 29, is transmitted to the feed shaft 3 through gears 31 and 32, so that the opening drive roller 4 is rotated in the paper feeding direction. Further, as shown in FIG. 3, a clutch 33 is interposed between the feed shaft 3 and the opening driving roller 4 on the feed shaft 3, so that after printing on the type belt 20, the portion 24 is connected to the printing surface 2C. Both clutches 33 are engaged and the drive roller 4 is rotated when the continuous paper Pi on the platen 2 is opposed to the
, P2 is given a paper feed of one line.

A holder 34 is fixedly supported between the support frames 7 so as to be located in the inner space S of the type belt 20, and the holder 34 has a solenoid 35 and an armature 36 facing each type belt 20, respectively. And, there is a striking part 3 at the tip.
7 are provided, respectively. The solenoid 35 is normally demagnetized, the armature 36 is placed at the position shown in solid line in FIG. Further, when the solenoid 35 is energized, the armature 36 is attracted, the printing hammer 38 projects forward, and the back surface of the type belt 20 is struck by the striking portion 37, so that printing by the type 23 is performed. .

An ink roll 41 is disposed behind the rear running portion 20c of the type belt 20, and is adapted to apply ink for printing to the type 23 on each type belt 20.

As shown in FIGS. 2 and 3, the printing section 2 of the platen 2
A pair of left and right feed rollers 43 are fixed to an upper feed shaft 42 disposed in front of b. The two feed rollers 43 are located on both sides of the receipt P1 on the left printing surface 2C, and the distance between the two feed rollers 43 is approximately the same as the left and right width of the cut sheet P3. As shown in FIGS. 4 and 5, a pair of left and right operating levers 44 are rotatably supported at the intermediate portion in front of the left printing surface 2c.
Based on the rotation of this operating lever 44, the lower ends of the
A pressure roller 45 corresponding to the feed roller 43 is supported through a through hole 2d formed in the printing portion 2b so as to be able to approach and separate from the feed roller 43. When the pressure roller 45 is placed at the solid line position in FIG.
is held on both sides. In addition,
The cut sheet P3 has a wider horizontal width than the receipt P1 and the journal P2.

As shown in FIG. 1, the left frame 1 is provided with a guide groove 21 that is open upward, and guides the cut paper P3 through the continuous paper guide path on the front surface of the receipt P1. . Also, the cut sheet P3 is in the guide groove 21.
When the cut sheet P3 touches the lower end of the sheet P3, the cut sheet P3 is positioned to start printing.

As shown in FIG. 3, the upper feed shaft 42 is equipped with a gear 46.
is fixed, and its gear 46 is connected to a gear 48 on the lower feed shaft 3 via an intermediate gear 47. The one clutch 33 is interposed between the gear 48 and the lower feed shaft 3. Therefore, the type belt 20
After printing, when the portion 24 faces the printing surface 2C, the feed roller 43 is rotated in the paper feed direction, and cooperates with the pressure roller 45 to feed the cut sheet P3 by one line.

As shown in FIGS. 4 and 5, the left and right frames 1
A switching lever 50 is provided at the left, middle, and right end of the lever shaft 49, which is rotatably supported between the rear ends. The coupling levers 51, 52 are fixed. A connecting link 53,54 whose one end is rotatably connected to the upper end of both operating levers 44 is connected to a pin 56 at the upper end of the switching lever 50 and the connecting lever 51 through a long hole 55 transparently provided at the other end. connected. The pin 56 and the connecting link 53゜54
A spring 58 is stretched between the pin 57 and the pin 57 fixed to the pin 57 . The spring force of five toggle springs acts on the lower end of the switching lever 50. When the switching lever 50 is placed at the first position (2) indicated by the two-dot chain line in FIG. and is held in that position by the spring force of the toggle spring 59. Furthermore, when the switching lever 50 is placed in the second position (2) shown by the solid line in FIG. Retained. In this case, it goes without saying that the holding force of the toggle spring 59 is greater due to the tensile force of the spring 58.

As shown in FIG. 4, a connecting lever 60 is fixed to the right end of the operating shaft 8, and a connecting lever 52 at the right end of the lever shaft 49 is connected by a connecting link 61. When the switching cam 9 is placed in the first position (2), the switching cam 9 is placed in the position indicated by the two-dot chain line in FIG.
When the switching cam 9 is located at the solid line position, the switching cam 9 is located at the solid line position.

Therefore, the switching lever 50. Connection lever 51, 52.60
The connecting links 53, 54, 61, etc. constitute a switching member 70 that switches between the separation and pressure states of the drive roller 4 and the pressure roller 6, and between the feed roller 43 and the pressure roller 45, respectively.

Next, the operation of the printing machine configured as above will be explained. First, in order to print on the receipt P1 and the journal P2, the switching lever 50 is set to the first position (3). In this way, the switching cam 9 is placed at the position indicated by the two-dot chain line in FIG. 2, and the pressure roller 6 is moved toward the drive roller 4 by the spring force of the leaf spring 7. 6. Also, the second
As shown by the two-dot chain line in the drawings and FIG. 5, the pressure roller 45 is arranged at a position separated from the feed roller 43.

When the start switch (not shown) of the register is turned on in this state, the motor 26 is rotated, the toothed pulley 17 is rotated via the idle gear 28 and gears 29 and 30, and each type belt 20 is rotated to the first position. They are rotated all at once in the direction of arrow Q in the figure.

In this state, when a desired key (not shown) is pressed down, the desired characters 23 on the character bells 1 to 20 of each digit A1 to 86 are moved to the receipt P1. When facing the printing position of the journal P2, the solenoid 35 facing the type belt 20 is energized and the printing hammer 38 strikes the back side of the desired type 23, thereby performing printing. In this way, when the required characters 23 of each character belt 20 face the printing positions of the required digits A1 to 80, printing is performed for each of the digits A1 to 86.

In this way, the type belt 20 rotates around the receipt P.
After each digit A1-A6 of journal P2 is printed, when the printing part 24 of the printing belt 20 faces the printing position of the receipt P1 and journal P2, the clutch 33 on the feed shaft 3 is engaged. The drive roller 4 is rotated, and the receipt P1 and journal P2 are fed by one line by the cooperation of the drive roller 4 and the pressure roller 6.6-.

Next, to print on the cut sheet P3, proceed as follows. First, with the press roller 45 separated from the feed roller 43, when the cut sheet P3 is inserted from above into the guide groove 21 of the frame 1 at its left side and brought into contact with the lower end of the guide groove 21, The cut sheet P3 is placed at the printing start position in front of the receipt P1.

Next, in this state, the switching lever 50 is switched to the second position (3) shown by the solid line in FIG. In this way, the switching cam 9 is rotated to the solid line position in FIG. 2, the left pressure roller 6 is moved downward, and the gripping state of the receipt P1 is released. Further, the pressure roller 45 is moved to the solid line position in FIG. 2, and the cut sheet P3 is held between the left and right feed rollers 43 and the pressure roller 45 on both sides thereof. In this case, the distance between the left and right rollers 43°45 is wider than the left and right width of receipt P1, so receipt P
1 is never pinched. Note that even if the driving roller 4 and the pressure roller 6 are released from holding the register 1-Pl, the elastic plate 11 fixed to the guide plate 10
is holding the receipt P1, so the receipt P1
It does not sag or fall downward.

Thereafter, when a desired key is pressed down, the solenoid 35 is energized and printing is performed when the printed characters 23 of each digit A1 to A6 are opposed to the print line position in the same manner as described above. After printing, when the portion 24 faces the printing surface 2C, the clutch 33 is engaged, the gear 48 is rotated, and the intermediate gear 4
7 and a gear 46, the feed roller 43 rotates. Therefore, the feed roller 43 and the pressure roller 45 cooperate to feed the cut sheet P3 by one line. In this case, the receipt P1 is also transferred to the drive roller 4 and the pressure roller 6.
Since it is not held between the feed roller 43 and the pressure roller 45, it remains in a stopped state and is not fed.

Therefore, no extra blank space is formed on the receipt P1. Note that, as a matter of course, printing and subsequent paper feeding are performed on the journal P2 in the same manner as when printing the receipt described above.

To take out the cut sheet P3, move the switching lever 50 to the first position again.
Switch the pressure roller 45 to the position ■ and move the pressure roller 45 to the feed roller 4
It can be taken out by separating it from 3.

In this way, printing on the cut sheet P3 is performed on the register P1.
It can be done in this position.

After printing is completed, when the start switch is turned off,
The motor 26 is stopped at the rotating position where the type portion 24 of the type belt 20 faces the ink roll 41, and the type belt 20 is stopped.

In the embodiment described above, the printing on the receipt P1 and the cut paper P3 is switched manually, but the driving force of a solenoid that is activated based on the detection of the insertion of the cut paper P3 can be used. It may also be configured so that it can be switched. Further, in the above embodiment, a printing machine having a type belt is used, but this may be applied to a printing machine having a normal type drum.

[Effects of the Invention] As described above, according to the present invention, continuous paper and cut sheets can be fed by selectively interoperating the continuous paper feed mechanism and the cut sheet feed mechanism using the paper feed switching mechanism. Continuous paper is guided through a continuous paper guide path by a continuous paper feed mechanism consisting of a drive roller and a pressure roller. The cut sheet is guided to the cut sheet guide member through a portion of the continuous sheet guide path by a cut sheet feeding mechanism including a feed roller and a pressure roller. In this case, since the feed rollers are disposed outwardly on both sides of the continuous paper in the width direction, the feed rollers can be disposed as close to the printing section as possible without being obstructed by the continuous paper.

Therefore, it is possible to use even a cut sheet having a short length in the feeding direction, and it is possible to reduce the blank area of the cut sheet where printing cannot be performed.

[Brief explanation of the drawing]

The drawings show an embodiment embodying the present invention, and FIG. 1 is an exploded perspective view, FIG. 2 is a side sectional view, and FIG.
The figure is a perspective view showing the 0-ra group for paper feeding, FIG. 4 is a perspective view showing the main part of the invention, and FIG. 5 is an enlarged side view. Frame 1, drive roller 4, pressure roller 6.6', feed roller 43, pressure roller 45, switching member 70, receipt P1, journal P2, cut paper P3, continuous paper guide path T

Claims (1)

[Claims] 1. It has a drive roller (4) and pressure rollers (6, 6') provided corresponding to the drive roller (4), and feeds continuous paper (P1, P2). Continuous paper feed mechanism that feeds continuous paper, and continuous paper (P
1, P2) through the printing section, and a continuous paper guide path (T) that guides the continuous paper (P1) that is fed through the continuous paper guide path (T). It has a pair of feed rollers (43) and a pressure roller (45) provided corresponding to the feed rollers (43), and has a cut sheet (P3).
), and a cut paper feed mechanism for feeding the cut paper (P) fed by the cut paper feeding mechanism.
3) is in pressure contact with the drive roller (4) and a cut guide member (21) that guides the continuous paper (P1, P2) so that it passes through a part of the continuous paper guide path (T) and the printing section of the continuous paper (P1, P2). A paper feed device for a printing machine, comprising a paper feed switching mechanism that selectively enables a set of a roller (6) and a set of the feed roller (43) and a pressure roller (45).