JPH0592648A - Printer - Google Patents

Abstract

PURPOSE:To provide a simple and small-sized printer whose paper positioning means can have both of paper stopper function and paper position detecting function by one light transmission type sensor. CONSTITUTION:In a paper stopper sensor 202 constituted of a light transmission type sensor wherein a base part 202c having a light emitting element 202a and a photodetector 202b arranged thereto in opposed relationship is formed into a horizontal U-shape, the horizontal U-shaped base part 202c is arranged in opposed relation to the end part of the insertion route of printing paper and the positioning of the printing paper and the detection of the presence thereof are performed by one paper stopper sensor 202.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus for printing on a printing plate on which characters, symbols, patterns, etc. are engraved by abutting a sheet of paper through an ink ribbon with a printing hammer.

[0002]

2. Description of the Related Art A conventional printing device, such as a numbering or check writer, prints while manually selecting characters, symbols, or patterns, or characters, symbols, or patterns on the circumference of a roller. The device that prints by pressing and transporting the paper while rotating the printing plate roller that is provided with the printing plate, or the printing head and heat generated by printers such as electric typewriters and word processors. A device or the like for printing using a head or wire dots is known.

By the way, the conventional printing devices such as the electric typewriter and the word processor are extremely highly automated, but in order to enhance their versatility, the characters printed on the paper serve as a mere information medium. In many cases, the typeface to be printed is formed by a very common typeface, and the imprint of the character or the like to be printed is more uniform.

Therefore, for example, when a printing device of this type is used as a printing device for a postmark or serial number of a product voucher, a ticket, etc., an original ticket (a postmark, serial number, etc.) such as a ticket is not printed. A person having ordinary knowledge about the printing apparatus can easily duplicate the characters printed on the sheet, and there is a high possibility that the ticket or the like will be forged if only the printed matter) is available.

On the other hand, in the conventional printing device such as the numbering or check writer, the characters, symbols, designs, etc. of the printing plate are uniquely configured to make it difficult to copy the characters. In addition, since the imprint of a character or the like to be printed changes due to the change of the printing pressure, forgery of a ticket or the like can be made more difficult.

However, these conventional numbering and printing devices such as checkwriters are difficult to automate, so that there is a problem in that printing work on paper is troublesome.

On the other hand, like an automatic postmarking device for mail, for example, while rotating a printing plate roller provided with printing plates of characters, symbols, patterns, etc. on the peripheral surface of the roller, It can be said that the printing apparatus that presses and conveys the printing paper and prints is a printing apparatus that solves the above-mentioned drawbacks.

However, in the conventional printing apparatus of this type, since it is necessary to manually change the date and time of the printing plate by the operator, it is difficult to print the printing information which changes from moment to moment. Become.

Further, in this type of printing apparatus, since printing is carried out while the printing paper is being carried, a printing error or a printing position shift is likely to occur due to a paper transportation error or a paper slip occurring during the paper transportation.

As described above, as a method of preventing the occurrence of printing errors and printing position deviations associated with the conveyance of printing paper, a printing plate engraved with characters, symbols, designs, etc. is driven by a plunger. It is also conceivable that printing is performed by abutting the printing paper through the ink ribbon with the printing hammer.

However, as described above, in the printing apparatus of the type in which the printing hammer is driven by the plunger, the printing pressure is limited to a constant value by the ability of the plunger. It becomes impossible to fine-tune the printing pressure based on the imprint of the above, and when the printing paper itself is made up of multiple copy sheets, the printing pressure sufficient for copying the impression of the printing plate on the lower printing paper is applied. However, if a large number of print hammers are arranged in parallel in a print area having a width of several cm, a large number of plungers are required to drive these print hammers individually at substantially the same printing pressure. Since they must be arranged in parallel, there is a problem that the device itself becomes large.

[0012]

By the way, as a means for solving the problems of the above-mentioned conventional printing apparatus, a printing drum having printing plates of characters, symbols, patterns, etc. arranged on the peripheral surface of a column, Paper positioning means for placing the printing paper at a position facing the printing plate of these printing drums, an ink ribbon movably supported between the printing plate of the printing drum and the printing paper, and the above paper. A printing hammer disposed on the non-printing surface side of the printing paper set on the positioning means and supported so as to be able to come into contact with and separate from the printing plate of the printing plate drum, and to the printing plate by a blast output of compressed air. An air hammer for abutting the printing hammer, a printing drum driving means for rotating the printing drum at a constant angle while facing the printing plate to the printing surface of the printing paper, and a printing plate of the printing drum. Between the above and the above printing paper Ink ribbon driving means for moving the ink ribbon back and forth by a fixed amount, and air hammer driving means for driving the air hammer in a state where the printing plate is opposed to the printing surface of the printing paper set on the paper positioning means. Then, there is a method of configuring the printing device.

However, the paper positioning means of this type of printing apparatus has a paper stopper function for positioning the printing paper and a paper position detecting function for detecting whether or not the printing paper is positioned at a predetermined position. Since each of these required and required functions is generally configured independently, there is a problem that the device becomes complicated.

The present invention has been made in view of the above-mentioned points, and an object thereof is that the sheet positioning means has a sheet stopper function and a sheet position detecting function by one light transmission type sensor. It is to provide a simple and compact printing device that can be performed.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a printing plate drum in which printing plates of characters, symbols, designs, etc. are arranged on the peripheral surface of a column, and Paper positioning means for placing the printing paper at a position facing the printing plate of the printing drum, an ink ribbon movably supported between the printing plate of the printing drum and the printing paper, and the paper positioning means. A printing hammer disposed on the non-printing surface side of the printing paper fixedly mounted on the printing drum and supported so as to be able to come in contact with and separate from the printing plate of the printing drum, and the printing is performed on the printing plate by the protruding force of compressed air. An air hammer for abutting the hammer, a printing drum driving means for rotating the printing drum at a constant angle while facing the printing plate to the printing surface of the printing paper, a printing plate of the printing drum, and Do not quantify the above ink ribbon between print sheets. Printing device having reciprocating ink ribbon driving means and air hammer driving means for driving the air hammer in a state where the printing plate is opposed to the printing surface of the printing paper fixed on the paper positioning means In, the base of the paper stopper sensor, which is composed of a light-transmissive sensor in which the base for arranging the light emitting element and the light receiving element to face each other is formed in the shape of U, is placed at the end of the insertion path of the print paper. The configuration is such that they are opposed to each other.

[0016]

According to the present invention, a paper stopper sensor is constituted by a light-transmissive sensor having a U-shaped base for disposing the light emitting element and the light receiving element so as to face each other. Since the base portion of the sheet is disposed so as to face the end of the insertion path of the print sheet, the print sheet is positioned and detected by the one sheet stopper sensor described above.

[0017]

Embodiments of the present invention will now be described in detail with reference to the drawings.

However, for the purpose of avoiding complication of the description, the configuration and operation of the range clearly conceivable from the description of the present specification, and the above and other objects and novel features of the present invention are illustrated and illustrated. Disclosure is omitted or simplified.

First, the construction of a printing apparatus embodying the present invention will be described with reference to FIGS.

The printing apparatus of the present invention prints on a printing plate on which characters, symbols, designs, etc. are engraved by a printing hammer driven by an air hammer to abut the printing paper via the ink ribbon. The feature is to do.

The printing apparatus as an embodiment is shown in FIGS.
As shown in FIG. 7, two printing drums 1A and 1B in which two types of printing plates A and B in which characters, symbols, designs and the like are engraved are arranged on the peripheral surface of the pillar, and these printing drums 1A and 1B. Paper positioning means 200 for placing the printing paper 2 (see FIG. 21) at a position facing the printing plates A and B of the plate drums 1A and 1B, and the printing plates A and B and the printing paper 2 of the printing plate drums 1A and 1B. Between the ink ribbon 3 which is reciprocally supported between the printing plate 2 and the printing plates A and B of the printing drums 1A and 1B which are arranged on the non-printing surface side of the printing paper 2 which is placed on the paper positioning means 200. Two sets of printing hammers 4A and 4B supported so that they can come into contact with and separate from each other, and printing hammers 4A
4 sets of air hammers 5A and 5B for abutting against each other, and a printing plate driving means 100 for rotating the printing plates 1A and 1B at a constant angle while facing the printing plates A and B to the printing surface of the printing paper 2. And an ink ribbon drive means 300 for moving the ink ribbon 3 back and forth between the printing plates A and B of the printing drums 1A and 1B and the printing paper 2, and the printing drums 1A and 1B.
Printing hammers 4A, which can be freely moved to and from printing plates A and B of B
Printing hammer supporting means 400A, 400 for supporting 4B
B and the printing paper 2 fixed on the paper positioning means 200
Air hammer driving means 50 for driving the air hammers 5A, 5B with the printing plates A, B facing the printing surface of
It is composed of 0A and 500B.

As shown in FIG. 1, the above-mentioned components are
It is extremely compactly arranged in the main body 8 of the device, which includes the housing 6 and the device substrate 7.

Inside the apparatus main body 8, as shown in FIG. 1, a substrate 10a of a microcomputer 10 for controlling the driving of each component other than the above-mentioned each component.
And a support substrate 11a of the numeric keypad 11 connected to the microcomputer 10, a support substrate 12a of the function key 12, a substrate 13a of the interface 13, and a support substrate 14a of the operator display 14 connected to the interface 13 and a customer ( (For customer) Support substrate 15a of display 15, printer 16 for issuing receipt, power supply connector 17, fuse case 18, external host computer 1 described later
From the air compressor 22 connected to the pressure regulating valve 20a of the external controller 20 to the connector 21 for connecting the cable connected to the external controller 20 connected to 9 and the air hammer driving means 500A and 500B for driving the air hammers 5A and 5B. A distributor 23 for distributing the compressed air, a power switch 24, and the like are provided (see FIG. 19).

Here, the numeric keypad 11, the function keys 12, the operator display 14, the customer display 15 and the like are exposed on the outer surface of the apparatus main body 8 through the openings formed in the housing 6, as shown in FIG. Has been done.

Further, on the front surface of the housing 6, a paper carry-in section 25 for inserting the printing paper 2 into the apparatus main body 8, and
Receipt attaching / detaching portions 27 for attaching / detaching the receipt paper 26 attached to the internal printer 16 are formed.

The receipt attaching / detaching portion 27 is used for the printer 16
It is formed so as to also serve as a discharge port for the receipt 26a punched out by and to expose the elongated hole 7a formed in the device substrate 7.

The long hole 7a of the device board 7 is formed in such a size that a hand can be inserted therethrough, and serves as a handle for carrying the device body 8, while saving the material of the device board 7 and reducing the weight thereof. Have contributed.

On the other hand, each of the above-mentioned components in this embodiment is constructed as described below.

First, as shown in FIGS. 3 to 5, each of the two printing drums 1A and 1B is composed of a columnar body having ten peripheral surfaces of equal area.

On the peripheral surface of the printing plate drum 1A, ten printing plates A-1 and A in which letters, numbers, etc. are engraved as shown in FIG.
-2, A-3, A-4, A-5, A-6, A-7, A-
8, A-9 and A-10 are detachably fixed by the printing plate screw 1a.

Further, on the peripheral surface of the printing plate drum 1B, ten printing plates B- are engraved with letters and numbers as shown in FIG.
1, B-2, B-3, B-4, B-5, B-6, B-
7, B-8, B-9, B-10 are detachably fixed by the printing plate screw 1a.

The printing plates A shown in FIG. 7 and FIG.
For convenience of illustration, the numbers such as B are written in a positive form that is easy to read, but the actual letters of each printing plate A and B are engraved in a negative form in which the letters shown in the figure are reversed. Has been (cast).

The typeface, size, arrangement, etc. of the characters of these printing plates A and B are not limited to the example shown in the figure, but may be arbitrarily formed according to the needs of the user. Needless to say.

Each of these printing drums 1A and 1B is shown in FIG.
As shown in FIG. 5, two parallel plate drum shafts 30 rotatably mounted horizontally between a pair of rotating side plates 28, 29.
A and 30B have respective printing drum shafts 30A and 30B
It is rotatably supported so as to rotate integrally with and is driven to rotate at a constant angle by the printing drum driving means 100.

The printing plate driving means 100 is composed of printing plate pulleys 101A and 101B, a printing plate driving belt 102, a printing plate drum motor 103, a printing plate motor pulley 104 and the like.

The printing plate pulleys 101A and 101B are fixed to the end portions of the respective printing plate drum support shafts 30A and 30B which extend outward through the rotary side plate 28 on the left side in FIG. ..

Further, the stamp plate drum motor 103 is arranged so that it is located between the pair of rotating side plates 28 and 29.
It is screwed to 8.

The rotary shaft 10 of the stamp plate drum motor 103
Both ends of 3a pass through the rotary side plates 28 and 29 and extend outward, respectively. As shown in FIG. 4, the stamp plate motor pulley 104 is fixed to the end of the rotary side plate 28 side. Has been done.

Further, as shown in FIGS. 5 and 6, the end portion of the rotary shaft 103a on the rotary side plate 29 side of the stamp plate drum motor 103 is fixed to the rotary side plate 29 by the presence or absence of a slit 31a. A slit plate 31 for turning on / off the home position sensor 32 is fixed.

The printing plate drive belt 102 is formed of a timing belt that does not cause slippage due to rotation, and is appropriately rotatable between the printing plate pulleys 101A and 101B and the printing plate motor pulley 104. It is stretched around with tension.

As a result, the respective printing drums 1A and 1B are
By driving the printing plate motor pulley 104 of the printing plate drum motor 103, the printing plate drum motor 103 is rotated in a predetermined direction (the rotation direction does not need to be specified).

By the way, when one printing plate drum 1A, 1B is rotationally driven by one printing plate drum motor 103 in this way, each printing plate A, B of each printing plate drum 1A, 1B is driven.
In order to make both printing pressures on the printing paper 2 uniform, it is necessary to preliminarily adjust the printing surfaces of the printing plates A and B and the printing surface of the printing paper 2 to be flat. There is.

However, the above-mentioned adjustment is extremely difficult even with a high degree of skill, and even if an accurate adjustment can be made, the printing plate drive belt 102 and each printing plate pulley 101A. , 101B, a slight play between the printing plate driving belt 102 and the printing plate pulleys 101A, 101B.
Readjustment is often forced due to changes in B such as elongation and wear over time.

Therefore, it is desirable that this kind of drive system is constructed so that fine adjustments can be easily and accurately performed by the hand of a user or the like without requiring a high level adjustment technique.

Therefore, the printing drum driving means 1 of the present embodiment.
In 00, as shown in FIGS. 9 to 11, the stamp surface adjusting means 60 is provided at an appropriate position on the outer periphery of the stamp driving belt 102 (in the example shown, an intermediate portion between the stamp pulleys 101A and 101B).
0 is provided.

As shown in FIG. 10, the stamp surface adjusting means 600 includes a stamp surface adjusting ring 601, a ring support shaft 602 for rotatably supporting the stamp surface adjusting ring 601, and a stamp surface for supporting the ring support shaft 602. The adjusting base 603 and the adjusting screw 604 for fixing the stamp face adjusting base 603 to the rotary side plate 28 are included.

Here, in the stamp face adjusting base 603, the stepped portion 603a at the fixed end thereof is fitted into the base support hole 28a formed in the turning side plate 28, and the turning side plate 28 is provided.
Is formed with a short axis that is shorter than the thickness of.

Therefore, the stamp face adjusting base 603 is configured such that the adjusting screw 604 is slightly loosened so that the rotary side plate 2 is
It is rotated integrally with the adjusting screw 604 without being detached from No. 8 and is very strongly fixed to the rotating side plate 28 by only slightly tightening the adjusting screw 604.

Further, the ring support shaft 602 is arranged so as to face a position where the center of rotation of the stamp face adjusting ring 601 is eccentric with respect to the center of rotation of the stamp face adjusting base 603.

According to the stamp surface adjusting means 600, by rotating the stamp surface adjusting base 603 by rotating the adjusting screw 604 in the loosening direction, as shown in FIG. 11, the stamp surface adjusting ring 601 is eccentrically rotated to drive the stamp plate. The printing plate drive belt 102 comes into contact with the outer peripheral surface of the belt 102 and is relaxed according to the amount of rotation of the adjusting screw 604.

The amount of eccentricity of the stamp face adjusting ring 601 at this time is monitored through a monitoring hole 33a formed in the fixed side plate 33 described later.

As a result, each of the printing plate pulleys 101A, 10A
The printing drums 1A and 1B are rotated in the opposite directions via 1B.

Therefore, according to the printing surface adjusting means 600, the printing surface of each of the printing plates A and B is adjusted so as to be flat with respect to the printing surface of the printing paper 2 by rotating the adjusting screw 604. By an extremely easy operation, both printing pressures of the respective printing plates A and B of the respective printing drums 1A and 1B to the printing paper 2 can be adjusted to be uniform.

Next, the printing plates A of the printing drums 1A and 1B,
A paper positioning unit 200 for fixing the print paper 2 (see FIG. 21) at a position facing B will be described.

Paper positioning means 200 in this embodiment
As shown in FIG. 3 and the like, includes a paper guide plate 201, a paper stopper sensor 202, a pair of paper pressing cylinders 203, and the like.

As shown in FIGS. 4 and 12, the paper guide plate 201 is provided between the pair of fixed side plates 33 and 34 together with the two guide plate stays 204 that support the paper guide plate 201.
A guide plate screw 205 holds and fixes the plate substantially horizontally.

The height of the paper guide plate 201 is equal to that of the housing 6.
It is set so as to match the height of the sheet carry-in section 25 for inserting the print sheet 2 on the front side of the apparatus into the apparatus body 8.

Further, at a position of the sheet guide plate 201 facing the printing plates A and B of the printing plate drums 1A and 1B, an opening 201a for advancing and retracting the printing hammers 4A and 4B and a notch 201b are provided. Each is formed.

As shown in FIG. 12, the paper stopper sensor 202 is the same light transmission type as the home position sensor 32 in which a base portion 202c for arranging the light emitting element 202a and the light receiving element 202b in a U-shape is formed. And is fixed to the fixed substrate 33 with its U-shaped base 202c facing the end of the insertion path of the printing paper 2.

On the other hand, the pair of paper pressing cylinders 203 are
As shown in FIGS. 3 and 5, the pair of rotating side plates 28, 2
The pair of L-shaped rods 36 supported by the rotary side plate stays 35 for fixing the sheets 9 to each other are fixed so that the sheet pressing head 203a faces the sheet guide plate 201.

As shown in FIGS. 1 and 19, compressed air from the distributor 23 is sucked and exhausted from the distributor 23 at a predetermined timing via the distributor 206 and the paper pressing solenoid valve 207, as shown in FIGS. By
The respective paper pressing heads 203a are configured to come into contact with and separate from the print paper 2.

Next, the printing plates A and B of the printing plate drums 1A and 1B.
The ink ribbon driving means 300 that moves the ink ribbon 3 back and forth between the printing paper 2 and the printing paper 2 in a fixed amount will be described.

The ink ribbon drive means 300 is, as shown in FIGS. 3, 12, and 26, the ink ribbon rewind spool 301 around which the ink ribbon 3 is wound.
An ink ribbon take-up spool 302 around which the ink ribbon 3 is wound, a rewinding pulley 303 supporting the ink ribbon rewinding spool 301, a take-up pulley 304 supporting the ink ribbon take-up spool 302, and a fixed side plate 34. The ink ribbon motor 305 fixed to the ink ribbon motor 305, the ink ribbon motor pulley 306 fixed to the rotating shaft 305a of the ink ribbon motor 305, and the state in which the ink ribbon 3 is wound around the ink ribbon take-up spool 302 side (see FIG. 26). Ink ribbon winding completion sensor 307 that outputs a detection signal in the state (shown) and a state in which the ink ribbon 3 is wound around the ink ribbon rewind spool 301 side (FIG. 4).
Ink ribbon motor rewind completion sensor 308 that outputs a detection signal in a state shown in FIG.
And a rewinding pulley 303, and a rewinding belt 309 hung between the ink ribbon motor pulley 306 and the take-up pulley 304.
It consists of and.

Here, the rewinding pulley 303 and the take-up pulley 304 are, as shown in FIG.
4 are rotatably supported by a rewinding pulley shaft 303a and a winding pulley shaft 304a.

In addition, the ink ribbon rewind spool 30
1, and the ink ribbon take-up spool 302 includes a rewinding pulley 303, a coil spring 311, and a coil spring 311 provided between the take-up pulley 304 and the fixed side plate 34.
Due to the elasticity of 312, the respective end portions are pressed by the fixed side plate 33 to the crocodile, and the respective rewinding pulleys 3
03 and between the take-up pulley 304 and the fixed side plate 33 are supported detachably in parallel and horizontally so as to rotate with an appropriate frictional force.

These ink ribbon rewinding spools 30
1 and the ink ribbon take-up spool 302 are rewinding belts that are wound between the ink ribbon motor pulley 306 and the rewinding pulley 303 by rotating the rotating shaft 305a of the ink ribbon motor 305 in the forward and reverse directions. Three
09, and the take-up belt 31 wound between the ink ribbon motor pulley 306 and the take-up pulley 304.
Each of them is driven to rotate in the direction of winding the ink ribbon 3 via 0.

In the ink ribbon driving means 300 of this type, as is well known, the ink ribbon rewinding spool 301 and the ink ribbon take-up spool 302 are caused by the thickening of the ink ribbon 3 when winding the ink ribbon 3.
Since the peripheral speeds of the ink ribbon 3 and the peripheral speed of the ink ribbon 3 are different from each other, the ink ribbon 3 is excessively strained or loosened due to the difference in the peripheral speed.

Therefore, in the ink ribbon driving means 300 in this embodiment, as shown in FIG. 26, the ink ribbon motor pulley 306 is wound around the rewinding motor pulley 306a and the winding belt 31.
It is composed of two pulleys, a take-up motor pulley 306b around which 0 is wound, and a rewind motor pulley 306a and a take-up motor pulley 306b.
And a rotating shaft 305a of the ink ribbon motor 305, a one-way rotating clutch (ball cam clutch) that allows the rewinding motor pulley 306a and the winding motor pulley 306b to rotate only in the winding direction of the ink ribbon 3.
A rewinding clutch 313 and a take-up clutch 314 are provided to prevent excessive tension of the ink ribbon 3.

However, as described above, the rewinding motor pulley 306a and the winding motor pulley 306 are used.
b and the rotary shaft 305a of the ink ribbon motor 305, a rewinding clutch 313 and a winding clutch 3 are provided.
When 14 is provided, the rewinding motor pulley 306a and the take-up motor pulley 306b are each free to rotate in the unwinding direction of the ink ribbon 3, so that excessive tension of the ink ribbon 3 can be prevented, but the ink ribbon 3 can be prevented. There is a high possibility that winding looseness due to relaxation of No. 3 will occur.

The looseness of the ink ribbon 3 due to the looseness causes the rewinding pulley 303 and the take-up pulley 304.
And the coil spring 31 disposed between the fixed side plate 34
This can be prevented by increasing the resilience of 1, 312 and increasing the frictional force between the rewinding pulley 303 and the winding pulley 304 and the fixed side plate 33.

However, in such a method, the load on the ink ribbon motor 305 is excessively increased, and slipping of the rewinding belt 309 and the take-up belt 310 is likely to occur, resulting in poor take-up of the ink ribbon 3. There is a high fear.

Therefore, in the ink ribbon drive means 300 of this embodiment, the ink ribbon winding completion sensor 307,
The ink ribbon rewinding completion sensor 308 has a function of canceling the slack of the ink ribbon 3 due to slackening.

These ink ribbon winding completion sensors 3
07 and ink ribbon rewinding completion sensor 308
Indicates a state in which the winding of the ink ribbon 3 around the ink ribbon take-up spool 302 has been completed (the state shown in FIG. 26),
Alternatively, a state in which the winding of the ink ribbon 3 around the ink ribbon rewinding spool 301 has been completed (a state shown in FIG. 4).
Then, as shown in FIG. 26, a pair of switch pieces 307a, 3 formed of a good electrical conductor having appropriate elasticity, respectively.
08a is short-circuited by the detection pieces 3a and 3b made of a good electric conductor attached to both ends (terminations) of the ink ribbon 3 to output a detection signal to the microcomputer 10.

That is, a pair of switch pieces 307a and 308 of the ink ribbon winding completion sensor 307 and the ink ribbon rewinding completion sensor 308, respectively.
a is a pair of rotating side plates 2 as shown in FIGS.
Rotating side plate stay 35 for fixing 8 and 29 to each other
Are fixed via support substrates 307b and 308b made of an insulator, and their free ends are
Ink ribbon 3 on the ink ribbon take-up spool 302 side
And the peripheral surface of the ink ribbon 3 on the ink ribbon rewinding spool 301 side are elastically abutted, respectively.

Therefore, this ink ribbon drive means 300
According to the above, the pair of switch pieces 307a and 308a of the ink ribbon winding completion sensor 307 and the ink ribbon rewinding completion sensor 308 are elastically abutted on the peripheral surface of the ink ribbon 3, respectively. By the pressing force of these switch pieces 307a and 308a, the loosening of the ink ribbon 3 due to the loosening is eliminated.

On the other hand, the rotating side plates 28, 2 in this embodiment.
As shown in FIGS. 5 and 12, the reference numeral 9 designates a fixed side plate 33,
3 is rotatably supported by a rotating side plate support shaft 40 via a spacer 41. In FIG. 3, the rotating side plate support shaft 40 rotates about the rotating side plate support shaft 40 with respect to the fixed side plates 33, 34. By rotating the moving side plates 28 and 29 counterclockwise and exposing the ink ribbon 3 as shown in FIG. 12,
The ink ribbon 3 can be replaced.

Further, the rotating side plates 28 and 29 are shown in FIG.
As shown in, in the notch 34a of the one fixed side plate 34,
The end 42b of the locking rod 42, which is slidably fitted and supported on the rotating side plates 28 and 29, on the side of the handle 42a, and the through hole 33b of the other fixed side plate 33, the locking rod 42 of the locking rod 42. It is configured to be engaged with the fixed side plates 33 and 34 by fitting the other end portions 42c respectively.

That is, in the state where the rotary side plates 28, 29 are rotated with respect to the fixed side plates 33, 34, as shown in FIGS. 14 and 15, the small diameter formed on the handle 42a side of the locking rod 42. While the portion 42d corresponds to the notch 34a of the fixed side plate 34, the locking rod 42 is positioned so that the other end 42c of the locking rod 42 faces the position separated from the through hole 33b of the other fixed side plate 33. It is displaced toward the handle 42a side.

Therefore, by pushing the handle 42a of the locking rod 42 in the state shown in FIG. 14, as shown in FIG. 13, the rotating side plate 2 is moved relative to the fixed side plates 33 and 34.
8, 29 are locked.

Further, as shown in FIGS. 13 and 15, a locking rod 42 is provided at the end 42b of the locking rod 42 on the handle 42a side in order to prevent the locking rod 42 from being blindly moved or separated due to vibration or the like. With the handle 42a of 42 pressed, the locking rod 42
A rubber ring 42e and a pin 42f, which are pressed and held by the fixed side plate 34 by rotating, are disposed.

On the other hand, as shown in FIG. 4, the fixed side plates 33 and 34 are fixed side plate supports 4 fixed on the device substrate 7.
The device substrate 7 is fixed by screws on both sides of the device substrate 7.
Is integrated with.

Next, the printing hammer support means 400A and 400B in this embodiment will be described.

These print hammer support means 400A,
As shown in FIGS. 3, 4 and 16, 400B is arranged on the non-printing surface side of the sheet positioning unit 200, and is different from the printing plates A and B of the printing plate drums 1A and 1B. Two
The print hammers 4A and 4B are supported so that they can come into contact with and separate from each other.

Printing hammer support means 400A, 400
B is a print lever 401 to which ten print hammers 4A are individually fixed, a print lever 402 to which seven print hammers 4B are individually fixed, and a base end of each print lever 401 of the print hammer 4A. A print lever support shaft 403 movably supported and each print lever 402 of the print hammer 4B.
A print lever support shaft 403 that swingably supports the base end of the
A print lever holding plate 405 that holds the free end of each print lever 401 of the print hammer 4A, and a print lever holding plate 4 that holds the base end of each print lever 401 of the print hammer 4A.
06, a print lever holding plate 407 that holds the free end of each print lever 402 of the print hammer 4B, and a print lever holding plate 408 that holds the base end of each print lever 402 of the print hammer 4B.

Here, the respective print lever support shafts 403, 404
As shown in FIG. 3, two sets of printing hammers 4A, 4B
Of the print levers 401, 4 so as to correspond to the opening 201a of the paper guide plate 201 and the notch 201b.
Supports 02.

Further, these print lever support shafts 403, 4
As shown in FIG. 16, 04 is a pair of fixed blocks 40.
It is pivotally supported between both ends of 9,410.

These pair of fixed blocks 409 and 410
As shown in FIG. 4, is fixed to both sides of the fixed block support 44 on the fixed side plate support 43 by screws to be integrated with the device substrate 7.

The fixed block support 44 may be integrally formed with the fixed side plate support 43.

On the other hand, the print lever holding plates 405, 40
6, 407 and 408 are two sets of 17 printing hammers 4.
The print levers 401 and 402 are held so that the letters A and 4B correspond individually to the characters and the like on the stamp plates A and B, respectively.

The print lever holding plates 406 and 408 are fixed between both ends of a pair of fixed blocks 409 and 410, respectively.

Further, the print lever holding plates 405, 407
Are fixed to both side portions of a support block 411 which is laterally fixed to the center portions of the pair of fixed blocks 409 and 410, respectively.

These print lever holding plates 405, 40
6, 407, 408 and the support block 411,
It also functions as a reinforcing material for the fixed blocks 409 and 410.

Next, the printing hammer 4 is applied to the printing plates A and B.
The air hammer driving means 500A, 500B for driving the two sets of air hammers 5A, 5B by the rush output of the compressed air in the direction in which the A and 4B collide will be described.

Two sets of 17 air hammers 5A, 5B
Is, as shown in FIG. 3, FIG. 4, and FIG.
Each print lever 40 of each of the seven print hammers 4A, 4B
1, 402 to correspond to the support plates 501 and 502.
Each of them is arranged and fixed in a staggered manner.

As described above, in this embodiment, the air hammers 5A and 5B are arranged and fixed in a staggered manner, so that the installation space of the air hammers 5A and 5B becomes extremely small and the apparatus body 8 is In addition to being compact, it is possible to arrange a large number of printing hammers 4A, 4B very close to each other in a relatively narrow printing space.

Each air hammer 5A, 5B is shown in FIG.
As shown in FIG. 5, the hammer portion 5a and the print cylinder 5b slidably supporting these hammer portions 5a are respectively configured.

The support plates 501 and 502 are shown in FIGS.
As shown in FIG. 6, the air hammers 5A and 5B are horizontally fixed on the pair of fixing blocks 409 and 410 via the spacers 503 and 504, and the heights of these spacers 503 and 504 are changed. Hammer part 5a
It is configured so that the stroke of can be adjusted.

Air hammer driving means 5 in this embodiment
00A and 500B are, as shown in FIG. 1, FIG. 3, and FIG. 19, first printing cylinder 5b− of air hammer 5A.
The first solenoid valve 5c-1 for selectively supplying the compressed air supplied from the air compressor 22 via the distributor 23 to the first to tenth printing cylinders 5b-10. 10 solenoid valve 5c-1
0 and the 11th printing cylinder 5b-1 of the air hammer 5B
No. 1 to No. 17 solenoid valves 5c-11 to selectively supply compressed air supplied from the air compressor 22 via the distributor 23 to the seventeenth printing cylinders 5b-17. 17 solenoid valve 5c
-17 and.

As described above, in the air hammer driving means 500A and 500B according to the present embodiment, each solenoid valve 5c is replaced by the first solenoid valve 5c-1 to the tenth solenoid valve 5c-1.
Solenoid valve 5c-10, eleventh solenoid valve 5c-11 to seventeenth solenoid valve 5c-1
7 and the compressed air supplied from the air compressor 22 is supplied to the respective solenoid valves 5c divided into these two groups through the distributor 23, so that each solenoid valve The pressure of the compressed air supplied to 5c can be made uniform.

Therefore, this air hammer drive means 500
According to A and 500B, the occurrence of printing defects due to a time lag during the operation of each solenoid valve 5c is prevented.

As shown in FIG. 3, each solenoid valve 5c has a pressure adjusting screw 5d, and the pressure adjusting screw 5d can adjust the amount of air supplied to each printing cylinder 5b. Is configured.

The operation of the printer according to the present invention constructed as described above will be described below.

As shown in FIG. 18, this printing device is used as a terminal device of the external controller 20 controlled by the host computer 19 via the modem 700, for example.

In this embodiment, as shown in FIG. 21, "East" indicating the position of the blade, "3" indicating the group number, and the serial number are assigned to the printing paper 2 which is a two-sheet binding copy paper. Three tickets of 3000 yen with "6029" indicating, "6-20" indicating the date, "AM11: 32" indicating the time, and "3" indicating the classification are printed. A case will be described as an example.

The drive control circuit of the printing apparatus of this embodiment is constructed as shown in FIG. 19 and is operated according to the operation program shown in FIG.

This operation program is stored in advance in the ROM of the microcomputer 10, and by turning on the power switch 24 of the apparatus main body 8 shown in FIG.
It will be started.

In FIG. 20, when the operation program is started, first, the stamp plate drums 1A and 1B are rotated so as to be located at their home positions and then stopped, and if necessary, the time and group number are set. Initial settings such as settings and changes are made.

Next, using the ten-key 11 and the function key 12 shown in FIG. 2, the number of issued tickets, the type and amount of issued tickets, etc. are designated in accordance with the customer's request.

In this example, the function key 12 "3000" and "x" and the ten key 11 "3".
Are pressed respectively. Here, if the key is pressed by mistake, after pressing the "cancel" of the function key 12, it is pressed again.

As a result, the operator display 1
4 and the customer display 15, the total amount and total number of the designated tickets and the group number are respectively displayed, and in this state, waiting for the insertion of the printing paper 2, that is, the microcomputer 10 (hereinafter, simply microcomputer. The ON signal from the paper stopper sensor 202 (also referred to as an OFF signal) is awaited.

Then, in the above-mentioned state, the print sheet 2 is inserted along the sheet guide plate 201 as shown in FIG. 22 through the sheet insertion section 25 shown in FIG.
As shown in FIG. 23, the leading end of the sheet stopper sensor 2
02 by contacting the U-shaped base portion 202c,
When the irradiation optical path of the light emitting element 202a with respect to 2b is blocked, an ON signal from the paper stopper sensor 202 is output to the microcomputer 10, and the paper pressing solenoid valve 207 (air switch) is turned on as shown in FIG.

As a result, as shown in FIG. 19, compressed air is supplied to each sheet pressing cylinder 203 through the distributor 206, and as shown in FIG. 24, the sheet pressing head 203.
a is lowered, and the rear end of the printing paper 2 is moved to the paper guide plate 20.
1 fixed in place.

Then, the corresponding solenoid valve 5c (air switch) is turned on based on the previous input data.

That is, at the home position of each stamp plate drum 1A, 1B, in this example, the stamp plate A- shown in FIG.
The fifth, sixth, and seventh solenoid valves 5c-5, 5c-6, and 5c-7 for driving the print hammer 4A facing the "AM", "1", and "1:" marking surfaces of 1 are Each is turned on.

As a result, as shown in FIG. 19, the fifth, sixth, and seventh print cylinders 5b are passed through the distributor 23.
Compressed air is supplied to -5, 5b-6, and 5b-7, and
As shown in FIG. 5, the hammer portion 5a of each corresponding air hammer 5A instantly protrudes, and through the print lever 401,
Only the printing hammers 4A facing the "AM", "1" and "1:" marking surfaces of the stamp plate A-1 are driven respectively, and the letters "AM11:" etc. are first displayed on the time printing surface of the printing paper 2. Is printed.

During the printing operation, the stamp plate drum motor 1
04 is controlled by the microcomputer 10 to be temporarily stopped for the time required to operate all the print hammers 4A and 4B.

When a predetermined stop time of the stamp plate drum motor 104 elapses, the stamp plate drum motor 104 is driven and each of the stamp plate drums 1A and 1B is driven by 36 degrees (1/1).
It is rotated at a constant angle by 0 rotation.

After that, as shown in FIG. 20, the microcomputer 1
0 determines whether the stamp plate drums 1A and 1B have rotated 360 ° (one rotation).

At this moment, since it is determined to be "NO", the corresponding solenoid valve 5c (air switch) is turned on based on the previous input data as in the above.

That is, at this point, in the case of this example,
The printing hammers 4A and 4B facing the "2" and "2" printing surfaces of the printing plate A-2 and the "2" printing surface of the printing plate B-2 shown in FIGS. 7 and 8 are driven. 3, 9th, 16th
Each solenoid valve 5c-3, 5c-9, 5c-16
Are turned on respectively.

As a result, similarly to the case described above, the third, ninth, and sixteenth printing cylinders 5 are passed through the distributor 23.
compressed air is supplied to b-3, 5b-9, 5b-16,
The hammer portion 5a of each of the corresponding air hammers 5A and 5B instantly protrudes, and through the print levers 401 and 402,
"2" and "2" marking faces of the stamp plate A-2, and the stamp plate B-
By driving only the print hammers 4A and 4B facing the "2" mark surface of 2, respectively,
Characters such as "2 AM11: 2" and "2" are printed.

Then, as in the case described above, when the predetermined stop time of the stamp plate drum motor 104 elapses, the stamp plate drum motor 104 is driven again and each stamp plate drum 1A, 1
B is rotated by a constant angle of 36 degrees (1/10 rotation).

After that, as shown in FIG. 20, the microcomputer 1
0 determines again whether or not the stamp plate drums 1A and 1B have rotated 360 ° (one rotation).

At this point in time, it is determined to be "NO" again, so that the corresponding solenoid valve 5c (air switch) is turned on based on the previous input data, as described above.

In this way, the respective stamp plate drums 1A, 1B
Each printing hammer 4 facing the corresponding printing surface of each printing plate A, B while being rotated by 36 degrees (1/10 rotation)
The solenoid valves 5c for driving A and 4B are turned on, and the hammer portions 5a of the corresponding air hammers 5A and 5B are instantly projected.
The printing hammers 4A and 4B facing the printing surfaces of the respective printing plates A and B are respectively driven through the printing papers 2 and 3, so that the printing paper 2 is printed with "East 3 6029" and "6-20A".
Characters such as “M11: 323” are printed.

As in the case described above, when the predetermined stop time of the stamp plate drum motor 104 elapses, the stamp plate drum motor 104 causes each of the stamp plate drums 1A and 1B to rotate 36 degrees (1/10 rotation). ) Again, the microcomputer 10 determines whether or not the stamp plate drums 1A and 1B have rotated by 360 ° (one rotation), as shown in FIG.

At this point, the stamp plate drums 1A and 1B are set to 1
Since it is rotated, the microcomputer 10 makes a "YES" determination, and it is determined whether the home position sensor 32 is on or off.

Here, when the home position sensor 32 is off, the stamp plate drums 1A and 1B are stopped at a position deviated from their home positions, and therefore, as shown in FIG. The drum motor 103 is driven again.

The driving of the stamping plate drum motor 103 is stopped when the stamping plate drums 1A and 1B are correctly positioned at their home positions, that is, when the home position sensor 32 is turned on.

In this way, when the stamp plate drums 1A and 1B are correctly positioned at their home positions and stopped, the ink ribbon motor 305 is driven and the ink ribbon 3 is wound by a fixed amount.

At this time, as shown in FIG. 26, all the ink ribbons 3 are wound on either the ink ribbon rewinding spool 301 or the ink ribbon winding spool 302, and the ink ribbon winding Completion sensor 3
07 or ink ribbon rewinding completion sensor 308
If any one of them is turned on, the rotation direction of the ink ribbon motor 305 is reversed as shown in FIG.

In this way, when the ink ribbon 3 is wound by a fixed amount, the drive of the ink ribbon motor 305 is stopped.

Next, the paper pressing solenoid valve 207.
(Air switch) is turned off.

As a result, as shown in FIG. 19, the compressed air supplied to each sheet pressing cylinder 203 through the distributor 206 is exhausted into the apparatus main body 8 and the sheet pressing head 203a rises to guide the sheet. The printing paper 2 can be taken out from the plate 201.

Then, by taking out the printing paper 2 after the printing from the paper insertion portion 25 of the apparatus main body 8 shown in FIG. 2, the front end of the printing paper 2 is received by the light receiving element 202b.
It is determined whether or not the paper stopper sensor 202 is turned off (may be turned on) out of the irradiation light path of the light emitting element 202a with respect to, and the set number of tickets are issued by the microcomputer 10 as shown in FIG. Is done.

Here, when printing on another printing sheet is required, the above-mentioned operation is repeated for the required number of sheets by feeding back to the step after the initial setting.

After the printing of the set number of sheets is completed,
When the "total" key of the function keys 12 is turned on, as shown in FIG. 18, the data printed by this printing device is totaled by the external controller 20 and sent to the host computer 19 via the modem. Be managed centrally.

After that, when all the printing operations are completed and the "end" key of the ten-key pad 11 is turned on, the acceptance slip is output by the external controller 20 via the host computer 19, and the power switch 24 is turned off. By doing so, the operation of the printing device is stopped.

[0139]

As described above, according to the present invention, since one light transmission type sensor has both the paper stopper function and the paper position detecting function, the paper positioning means is simple and , Can be configured in a small size.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a printing apparatus according to an embodiment of the present invention.

FIG. 2 is an external view of the printing apparatus.

FIG. 3 is a side sectional view of the printing apparatus.

FIG. 4 is a side center sectional view of the printing apparatus.

FIG. 5 is a schematic perspective view of a printing plate drum driving means of the printing apparatus.

FIG. 6 is a cross-sectional view of a home position sensor of a printing drum driving unit of the printing apparatus.

FIG. 7 is a schematic view of a printing plate of the printing device.

FIG. 8 is a schematic view of another printing plate of the printing apparatus.

FIG. 9 is an explanatory diagram of a stamp surface adjusting unit of the printing apparatus.

FIG. 10 is a cross-sectional view of the stamp face adjusting means.

FIG. 11 is an explanatory diagram of an adjustment state of the stamp face adjusting means.

FIG. 12 is a schematic perspective view of an ink ribbon driving unit of the printing apparatus.

FIG. 13 is an explanatory diagram of a locking structure of a rotating side plate of the printing apparatus.

FIG. 14 is an operation mode diagram of the locking structure of the rotating side plate.

15 is a cross-sectional view taken along line XX of FIG.

FIG. 16 is a schematic perspective view of a print hammer support means of the printing device.

FIG. 17 is a schematic plan view showing an arrangement of air hammers of the printing apparatus.

FIG. 18 is a schematic diagram of a ticket issuing system using the printing device of the present invention.

FIG. 19 is a block diagram showing a drive circuit of the printing apparatus of the present invention.

FIG. 20 is a flowchart showing the operation of the drive circuit of the printing apparatus of the present invention.

FIG. 21 is a schematic plan view of a printing sheet used in the printing apparatus of the present invention.

FIG. 22 is a perspective view showing a state in which printing paper is set on a paper guide plate of the printing apparatus.

FIG. 23 is a schematic cross-sectional view showing a detected state of a print sheet set on a sheet guide plate of the printing apparatus.

FIG. 24 is a schematic cross-sectional view showing a fixed state of the printing paper set on the paper guide plate of the printing apparatus.

FIG. 25 is a schematic cross-sectional view showing a printing state on printing paper set on a paper guide plate of the printing apparatus.

FIG. 26 is a cross-sectional view of an ink ribbon driving unit of the printing device.

[Explanation of reference symbols] 1A, 1B printing drum 2 printing paper 3 ink ribbon 3a, 3b detection piece 4A, 4B printing hammer 5A, 5B air hammer 22 air compressor 100 printing drum driving means 102 printing plate driving belt 103 printing drum motor 104 plate motor pulley 200 paper positioning means 201 paper guide plate 202 paper stopper sensor 300 ink ribbon drive means 400A, 400B print hammer support means 500A, 500B air hammer drive means A, B print plate

Claims (1)

[Claims] 1. A printing plate drum having a printing plate of characters, symbols, patterns, etc. arranged on the peripheral surface of a column, and a paper sheet on which printing paper is placed at a position facing the printing plate of these printing plate drums. Positioning means, an ink ribbon reciprocally supported between the printing plate of the printing plate drum and the printing paper, and the printing paper disposed on the non-printing surface side of the printing paper set in the paper positioning means. A printing hammer supported so as to be able to come into contact with and separate from the printing plate of the plate drum, an air hammer for abutting the printing hammer against the printing plate by a blast output of compressed air, and a printing surface of the printing paper. And a printing plate driving means for rotating the printing plate drum at a constant angle while facing the printing plate, and an ink ribbon for reciprocating the ink ribbon by a fixed amount between the printing plate of the printing plate drum and the printing paper. Drive means and paper position determination In a printing apparatus having an air hammer driving means for driving the air hammer in a state in which the printing plate is opposed to a printing surface of a printing paper set on the means, a base unit for disposing a light emitting element and a light receiving element to face each other. A printer, wherein a U-shaped base portion of a paper stopper sensor formed of a light-transmissive sensor formed in a letter shape is arranged so as to face an end portion of an insertion path of a print sheet.