JP2003039805A - Printing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide printing equipment which enables attainment of an excellent printed matter, while reducing nonuniformity of an image even when a plurality of printing drums different in the constitution and the state are fitted for printing. SOLUTION: In this printing equipment, drum units 9A and 10A supporting the printing drums 9 and 10 and also having storage means 31 and 32 for storing information proper to the drums respectively can be fitted removably to the main body 1 of the equipment. The main body 1 of the equipment is provided with a discriminating control means 20 which can read out the information stored in the storage means 31 and 32 and which discriminates the respective constitutions and states of the printing drums 9 and 10 from the read information and controls the constitutions relating to ink discharge properties on the basis of the discriminated information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus having a plurality of printing drums.

[0002]

2. Description of the Related Art With the diversification of printing, various stencil printing apparatuses have been proposed as a printing apparatus capable of mounting a plurality of printing drums. For example, a plurality of print drums are removably arranged in parallel in the paper conveyance direction, and printing members such as a press roller and an impression cylinder are arranged to face each other, or the print drums are arranged to face each other. One of the printing drums can be moved in and out of contact with the other.
Alternatively, the outer peripheral surface of the printing drum can be swollen, 1
There is a type in which a plurality of printing drums are arranged around the circumference of one impression cylinder, and the outer peripheral surface of each printing drum can be bulged or can be brought into contact with and separated from the impression cylinder.

In the stencil printing machine, the time during which the printing drum is not used for printing and the ink viscosity in the printing drum are close to each other. That is, since there is a variation in the ejection property of the ink that goes out from the inside of the printing drum to the outside depending on the length of the leaving time, the leaving time is obtained by measuring the time from the end of printing to the start of the next printing with a measuring means such as a timer. The ink ejection property of the printing drum is adjusted uniformly according to this standing time.

[0004]

In a stencil printing apparatus capable of printing by mounting a plurality of printing drums, there are cases where monochromatic printing and multi-color printing are performed, and the frequency of use and the standing time differ for each printing drum. For this reason, it is difficult to sufficiently adjust the ink ejection property of each print drum even if the ink ejection property of the print drum is uniformly adjusted based on the leaving time as in the past, and it is difficult to adjust the print image for each print drum. There is a problem that comes out.

In the case of a stencil printing apparatus in which the printing drum can be attached to and detached from the apparatus main body, printing can be performed by exchanging with a printing drum suitable for the paper size. For this reason, a good image cannot be obtained unless each part is adjusted in consideration of the configuration conditions such as the aperture ratio of the printing drum mounted on the apparatus.

The ink dischargeability varies depending on the temperature difference and the viscosity difference of the ink, the plate making aperture of the plate making master, the pressure contact force of the printing pressure member at the time of printing, and the like. For this reason, if the configuration relating to the ink ejection property is not adjusted in consideration of such a configuration, there will be a difference in the image formed on each print drum.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a printing apparatus capable of suppressing variations in images and obtaining good printed matter even when printing is performed by mounting a plurality of printing drums having different configurations and states.

[0008]

In order to achieve the above object, the present invention provides, in claim 1, a plurality of drum units, which support a printing drum and have a storage unit for storing information peculiar to the drum, in an apparatus main body. On the other hand, in the detachable printing apparatus, the information stored in each storage unit provided in the apparatus main body can be read, the configuration and state of each printing drum is identified from the read information, and the ink is printed based on the identified information. A printing apparatus having an identification control unit that controls the configuration related to the ejection property has been proposed.

According to another aspect of the present invention, in a printing apparatus in which a plurality of print drums having ID marks unique to the drums are detachable from the apparatus main body, the configuration and state of the print drums provided in the apparatus main body and stored for each ID marker are stored. Therefore, a printing apparatus is proposed that has an identification control unit that identifies the configuration and state of the print drum for each ID marker and controls the configuration related to the ink ejection property based on the identified information.

According to a third aspect of the present invention, in the printing apparatus according to the first or second aspect, the unprinted plate master has a thermal head for perforating the plate, and the ink ejection property of each printing drum is determined from the identification information identified by the identification control means. Each of them is determined, and the perforation diameter of the plate by the thermal bed can be adjusted for each printing drum based on this ink discharge property.

According to a fourth aspect of the present invention, in the printing apparatus according to the first, second, or third aspect, at least the inner peripheral surface of each printing drum can be contacted with and separated from each other, and each rotatable ink ejection roller, and each of the printing drums. A drive means for moving each ink extruding roller to a position in contact with the inner peripheral surface and a position separated from the inner peripheral surface of each printing drum, and a drive source for rotationally driving each ink extruding roller, It is possible to adjust the rotation of each drive source and / or the number of times of contact / separation operation of the ink push-out roller by each drive means for each print drum based on the information on the left time of the print drum identified by the identification control means.

According to a fifth aspect of the present invention, in the printing apparatus according to any one of the first to fourth aspects, a printing pressure member provided so as to be capable of press-contacting the outer peripheral surface of each printing drum, and each printing pressure member. A printing pressure adjusting unit that adjusts the pressure contact force with respect to the outer peripheral surface of the drum, respectively, and obtains the ink ejection property of each printing drum from the identification information identified by the identification control unit. It is possible to adjust the pressure contact force for each print drum.

According to a sixth aspect of the present invention, in the printing apparatus according to any one of the first to fourth aspects, the printing pressure member is disposed to face the outer peripheral surface of each printing drum, and the outer peripheral surface of the printing pressure member. The discriminating unit has displacement means for bulging and displacing the outer peripheral surface of each printing drum, and printing pressure adjusting means for adjusting the pressure contact force of the outer peripheral surface of each drum with respect to the outer peripheral surface of the printing pressure member. The ink ejection property of each printing drum is obtained from the information, and the pressure contact force of each printing pressure adjusting means can be adjusted for each printing drum based on the ink ejection property.

According to a seventh aspect of the present invention, in the printing apparatus according to the fifth or sixth aspect, there is provided temperature detecting means for detecting the internal temperature of each printing drum, and the ink on each printing drum is detected based on the detection information from each temperature detecting means. The ejection characteristics are individually determined, and the pressure contact force of each printing pressure adjusting means can be adjusted for each printing drum based on the ink ejection characteristics.

According to an eighth aspect of the present invention, in the printing apparatus according to the fifth or sixth aspect, there is provided ink temperature detecting means for detecting the ink temperature in each printing drum, and each printing is performed based on the detection information from each ink temperature detecting means. The ink dischargeability of each drum is obtained, and the pressure contact force of each printing pressure adjusting means can be adjusted for each print drum based on the ink dischargeability.

According to a ninth aspect of the present invention, in the printing apparatus according to the fifth or sixth aspect, each of the printing drums has an ink viscosity detecting means for detecting an ink viscosity in each of the printing drums. The respective ink ejection properties are obtained, and the pressure contact force of each printing pressure adjusting means can be adjusted for each printing drum based on the ink ejection properties.

According to a tenth aspect of the invention, in the printing apparatus according to any one of the third to ninth aspects, based on the display means for displaying the content of the identification information or the content of the detection information, and the identification information and / or the detection information. The adjusting operation is individually performed by adjusting the printing pressure by the printing pressure adjusting means, the plate making perforation diameter adjustment by the thermal head, the rotation adjustment of the ink extruding roller by the drive source, or the adjustment of the number of times the ink extruding roller is moved in and out by the driving means. And an operation switch for issuing a command to perform at least one of the above.

As the identification information, an offset amount which is a horizontal deviation between the rotation center of the ink roller arranged in the print drum and the center of the printing member, the aperture ratio of the print drum, and the print drum are constituted. Examples include the type of screen and the time that the printing drum is not used for printing.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, some embodiments of a printing apparatus according to the present invention will be described. The components having the same function in each form are designated by the same reference numerals, and the configurations of the corresponding reference symbols described above are given. The description of the above shall be appropriately referred to.

The stencil printing machine shown in FIG. 1 includes drum units 9A and 9B which respectively support the printing drums 9 and 10 and which have storage means 31 and 32 for storing information specific to the drums. These drum units 9
A and 9B can be attached to and detached from the apparatus main body 1. The apparatus main body 1 is capable of reading and writing (read / write) information stored in the storage means 31 and 32, and has an identification control means 20 for identifying the configuration and state of each print drum from the read information. In addition to these configurations, the apparatus main body 1 includes a paper feed tray 3 on which paper 17 is set, a paper discharge tray 4 from which printed paper is discharged, plate making means 5 and 6, and plate discharge means 7
A, 7B, press rollers 11, 12 as printing members,
It is provided with an intermediate conveyance means 13 and a paper discharge conveyance means 14. An image reading device 2 for reading a document image is mounted on the top of the device body 1.

The plate making means 5 and 6 are thermal heads 52 and 6 for making plate making perforations on a roll-shaped unmade plate master 50.
2. Platen rollers 51, 61 and printing drums 9, 10 which are arranged to face each thermal head and are driven to rotate.
Feed rollers 53 and 63 for respectively conveying the master to the
Master cutting means (not shown), thermal head drive substrate 5
4 and 64 are provided respectively. In this embodiment, the plate making means 5 makes the master wound around the printing drum 9, and the plate making means 6 makes the master wound around the printing drum 10. Further, the plate discharging means 7A is a printed master wound around the printing drum 9, and the plate discharging means 7B is a printing drum 1.
The printed masters wound around 0 are discarded. The thermal heads 52 and 62 form the plate-making images corresponding to the images read by the image reading device 2 on the plate-making masters 50 and 60, respectively.
The thermal head drive substrates 54, 6 based on the signal from 0.
The thermal energy for drilling is controlled appropriately by 4. The masters made by the plate making means 5 and 6 are the outer peripheral surfaces 9a and 10a of the printing drums 9 and 10 (hereinafter referred to as "drum outer peripheral surface 9").
a, 10a ”) and the ends thereof are clamped by a clamper (not shown) and wound.

The print drums 9 and 10 are rotatably supported by the drum unit frames 48 and 49, respectively, and are arranged in parallel in the paper transport direction indicated by the arrow X and mounted on the apparatus main body 1. The print drums 9 and 10 are connected to the drum drive motors 29 and 30 via a drive transmission system (not shown), and are driven and rotated by the drum drive motors 29 and 30, respectively. Printing drums 9 and 10
The ink rollers 22 and 25 and the doctor rollers 21 and 24 arranged to face each other with a slight gap therebetween
And are rotatably supported by the frames 27 and 28 shown in FIGS. 3 and 4, respectively. 3 and 4 show only the configuration on the print drum 9 side, and the reference numerals in parentheses indicate the configuration on the print drum 10 side. Ink rollers 22, 25
Is transmitted by a driving force transmission means (not shown) such as a gear or a belt, which rotates the drum driving motors 29 and 30, and is rotationally driven in the clockwise direction in the figure in synchronization with the printing drums 9 and 10. The doctor rollers 21 and 24 are rotatably supported by the frames 27 and 28, and the rotational drive force from the drum drive motors 29 and 30 is transmitted by a drive force transmission means (not shown), which is opposite to the ink rollers 22 and 25. Driven to rotate. Ink reservoirs 23 and 26 are formed in the proximity portions of the ink roller 22 and the doctor roller 21, and between the ink roller 25 and the doctor roller 24, respectively. Inks of different colors are appropriately supplied to the ink reservoirs 23 and 26, respectively. In this embodiment, red ink is supplied to the ink reservoir 23 and black ink is supplied to the ink reservoir 26. As shown in FIG. 1, on the frames (not shown) of the printing drums 9 and 10, temperature sensors 87 and 88 such as thermistors as temperature detecting means for detecting the temperatures inside the drums are provided.

FIG. 2 is a perspective view showing the construction of the printing drum 9 side. Since the configuration on the print drum 10 side is substantially the same as that shown in FIG. 2, the print drum 9 side will be described here as an example. In FIG. 2, the reference numeral in parentheses indicates the configuration on the print drum 10 side. In FIG. 2, reference numeral 45A indicates an ink supply pipe for supplying ink to the ink reservoir 23. An ink viscosity detection roller 42A is arranged below the doctor roller 21 so that the outer peripheral surface of the ink roller 22 is in sliding contact with the outer peripheral surface of the ink roller 22. In the present embodiment, the ink viscosity detection roller 42A is rotationally driven by the ink viscosity detection motor 43 which is a drive source. In the print drum 9, an ink temperature sensor 46 is provided as an ink temperature detecting means for detecting the ink temperature of the ink reservoir 23.

The ink viscosity detecting roller 42B which is in sliding contact with the outer peripheral surface of the ink roller 25 in the printing drum 10 is rotationally driven by the ink viscosity detecting motor 44. An ink temperature sensor 47 as an ink temperature detecting means for detecting the ink temperature of the ink reservoir 26 is provided inside the printing drum 10.
Is provided.

In FIG. 5, reference numerals 150A and 150B indicate ink viscosity detecting means. Ink viscosity detection means 150A
Is applied to the printing drum 9 side, and the ink viscosity detecting means 150B is applied to the printing drum 10 side. Both are applied to the ink viscosity detection motors 43, 44
Are the same except that they are different. Ink viscosity detection means 1
50A and 150B are ink viscosity detection rollers 42A and 4
Ink viscosity detection motors 43 and 44 that rotate 2B at a constant rotation speed, drive power supplies 151 and 152 as power supplies for supplying power to the ink viscosity detection motors 43 and 44, and ink viscosity detection motors from the drive power supplies 151 and 152. 43,
Current value detecting means 15 for detecting the current value supplied to
It is a circuit provided with 3,154 respectively.

In the ink viscosity detecting means 150A, 150B, the voltage value converting means 155, 156 having a constant electric resistance for the change of the current value I supplied from the driving power sources 151, 152 to the ink viscosity detecting motors 43, 44. And a voltage value (V = V) generated when the current value I supplied to the ink viscosity detection motors 43 and 44 flows through the reference resistance R between both terminals of the reference resistance R.
Voltage detectors 157 and 158 for measuring (IR) are respectively provided. By the voltage detectors 157 and 158, the voltage value (V = V = V) generated when the current value I supplied to the ink viscosity detection motors 43 and 44 flows through the reference resistance R.
By measuring (IR), the change in the current value I can be read as a voltage value. The voltage detectors 157 and 158 are respectively connected to A / D converters 159 and 160 that convert a voltage value as an analog amount into a voltage value as a digital amount, and the voltage values are changed by these A / D converters 159 and 160. It is converted into a digital signal and becomes an ink viscosity detection signal. The A / D converters 159 and 160 are connected to the discrimination control means 20, and the ink viscosity detection signal converted into a digital signal is taken into the discrimination control means 20.

As shown in FIG. 2, storage means 31, 32.
Is attached to one of the side plates (not shown) of the printing drums 9 and 10 located in the paper width direction Y. In the device body 1,
When each drum unit is attached to the apparatus main body 1, units 33 and 34 for reading / writing information stored in the storage means 31 and 32 are arranged in contact with or in non-contact with the storage means 31 and 32. Has been done. The storage means 31 and 32 are the drum unit frame 4 shown in FIG.
It may be attached to 8,49.

In the stencil printing machine, as shown in FIG. 2, the printing roller 11 is selectively displaced between a printing pressure position where the press roller 11 is in pressure contact with the drum outer peripheral surface 9a and a non-printing pressure position separated from the printing pressure position. Pressure member displacing means 39A and press roller 1
Printing pressure adjusting means 80A for adjusting the pressure contact force of the first drum outer peripheral surface 9a.

The printing pressure member displacing means 39A includes arm members 36a, 36 for rotatably supporting the shaft of the press roller 11.
b, a shaft 37 rotatably supported by the frames 18 and 19 in the apparatus body 1 and fixed to the ends of the arm members 36a and 36b, and the arm 36a and the shaft 36 at the substantially central portion between the press roller 11 and the shaft 37. 36b is inserted into the arm 36a,
An intermediate connecting stay 35 that connects 36b to each other, and a base end thereof is fixed to a central portion of a shaft 37, and a free end of the intermediate connecting stay 35 engages with a central portion of the intermediate connecting stay 35 to intermediately rotate the shaft 37 at a predetermined angle. Vertical operation arm 3 that is transmitted to the connecting stay 35
8, a spring mounting arm 65 fixed to one end of the shaft 37 and having a cam follower 65a, both ends of the spring mounting arm 65 and the spring holder 67 are locked so that the press roller 11 is pressed against the drum outer peripheral surface 9a. It mainly comprises a biasing spring 66 and a printing pressure cam 78 that is mounted on a cam shaft 78a to which the rotation synchronized with the rotation of the printing drum 9 is transmitted and that is selectively engaged with the cam follower 65a of the spring mounting arm 65. . With this structure, when the cam shaft 78 rotates and the shaft 37 rotates, the arm members 36a and 36b swing and the press roller 11 presses and separates from the drum outer peripheral surface 9a. Press roller 12
The printing pressure member displacing means 39B for
It has the same configuration as A.

The printing pressure adjusting means 80A is mounted on the frame 19 via a bracket (not shown), and has a worm 75 attached to its output shaft, which enables forward and reverse rotation of the printing pressure control motor 74A and the inside of the spring holder 67. With a screw shaft 70 that penetrates through the spring holder 67, a worm wheel 71 that constantly meshes with the worm 75, and a slit plate 72A that is fixed to the end of the screw shaft 70 and that detects the rotational speed of the worm wheel 71. , A pulse detection sensor 73A that clamps the slit plate 72A at a predetermined interval
A shield plate 68 protruding from the outer peripheral portion of the spring holder 67, and a shield plate 68 supported at a predetermined position on the frame 19 via a member (not shown).
And a sensor 69A for detecting a home position indicating a position indicating a pressure standard state of the rotation speed detection sensor 72A. With such a configuration, the printing pressure control motor 74A rotates. Then, the spring holder 67 moves on the screw shaft 70, the length of the spring 67 is changed, and the pressure contact force of the press roller 11 can be adjusted.

The printing pressure adjusting means 80B is basically the same in construction as the printing pressure adjusting means 80A, the worm 75 is mounted on the output shaft of the printing pressure control motor 74B, and the rotation of the screw shaft 70 is pulsed with the slit plate 72B. The position of the spring holder 67 indicating the standard printing pressure is detected by the detection sensor 73B and the sensor 69B. With this configuration, when the printing pressure control motor 74B rotates, the spring holder 67 moves on the screw shaft 70, the length of the spring 67 is changed, and the pressure contact force of the press roller 12 can be adjusted.

As shown in FIG. 1, in the printing drums 9 and 10, rotatable ink ejecting rollers 161A and 161A, which can respectively come in contact with and separate from the inner peripheral surfaces of the printing drums 9 and 10, respectively.
161B is provided downstream of the ink rollers 22 and 25 in the rotational direction of the printing drums 9 and 10. The ink pushing rollers 161A and 161B are, as shown in FIG.
4 and a position separated from the inner peripheral surfaces of the printing drums 9 and 10.
As shown in FIG. 7, the driving means 260A and 260B move the printing drums 9 and 10 to contact the inner peripheral surfaces thereof.
The driving means 260A moves the ink pushing roller 161A in and out of contact with it, and the driving means 260B moves the ink pushing roller 161B in and out of contact with it. These drive means 260A and 260B are provided with a drive motor 168 which is a drive source.
Since the A and 168B are the same except that they have the same structure, the structure of the driving means 260A will be mainly described here.
The description of the configuration of 60B is omitted.

The ink push-out roller 161A is rotatably supported at both ends of its support shaft 161a by one end of an arm 162, and is connected to the drive shaft 99a of a drive motor 99.
It receives the driving force from A and is rotated in the same direction as the ink roller 22. The operation of the drive motor 99A is controlled by the identification control means 20 described later.

The arm 162, which is a plate-like member supporting one end of the ink pushing roller 161A, is bent at the other end to form a receiving portion 162a. An elongated hole 162b is formed substantially at the center of the arm 162, and an elongated hole 162c is formed at the other end.
Are formed. The arm 162 has an elongated hole 162b in a pin 163 planted outward in the frame 27, and an elongated hole 162c in a support shaft 164 rotatably supported by a bearing member (not shown) provided in the frame 27. Are supported on the outside of the frame 27 by inserting and engaging with each other.

A cam plate 165 and a worm wheel 166A are attached to the support shaft 164. The disc-shaped cam plate 165 is fixed to the end portion of the support shaft 164 at a position eccentric from the center thereof, and is arranged at a position where it can contact the outer peripheral surface of the large diameter portion of the support portion 162a. There is. The arm 162 constantly cams the receiving portion 162a by the urging force of a tension coil spring 167 stretched between a bracket (not shown) provided on the back surface of the other end and a bracket (not shown) provided on the back surface of the frame 27. It is pulled toward the outer peripheral surface side of the plate 165.

The frame 27 is provided with a stepping motor 168A as a drive source. The worm wheel 166 is attached to the output shaft of the stepping motor 168A.
A worm 169A that meshes with A is attached.
The stepping motor 168A rotates the cam plate 165 by its operation, so that the ink pushing roller 161 is rotated.
Selectively position A in a first position and a second position. When the large diameter portion of the cam plate 165 is in contact with the receiving portion 162a, the outer peripheral surface of the ink pushing roller 161A resists the biasing force of the tension coil spring 167 and the inner peripheral surface of the printing drum 9 and the ink roller. The cam plate 16 is positioned at a second position shown in FIG.
When the large-diameter portion of 5 is separated from the receiving portion 162a, its outer peripheral surface is brought closer to the inner peripheral surface of the printing drum 9 and the outer peripheral surface of the ink roller 22 by the urging force of the tension coil spring 167, and abuts on them. The smallest diameter portion of the cam plate 165 is the receiving portion 1.
62a, the inner peripheral surface of the printing drum 9 and the ink roller 22 are driven by a predetermined biasing force of the tension coil spring 167.
Is positioned at a first position shown in FIG. When the minimum diameter portion of the cam plate 165 faces the receiving portion 162a, a slight gap is set between them. The operation of the stepping motor 168A is
It is controlled by the identification control means 20 described later.

In this embodiment, the driving means 260A is composed of an arm 162, a cam plate 165, a tension coil spring 167, a worm wheel 166A and a worm 169A, a stepping motor 168A and the like.

When the driving unit 260A is used as the driving unit 260B, the ink pushing roller 16 is attached to the arm 162.
1B is rotatably mounted, the cam plate 165 and the worm wheel 166B are attached to the support shaft 164, and the worm 169B meshing with the worm wheel 166B is attached to the output shaft of the stepping motor 168B. In the present embodiment, the stepping motors 168A and 168B are exemplified as the driving sources of the driving means 260A and 260B, but other motors may be used. Alternatively, an actuator such as an electromagnetic solenoid is used as a drive source for the arm 1
62 to move the ink ejecting rollers 161A and 161B
It is also possible to adopt a mode in which the contact and separation operations are performed.

The structures of the storage means 31 and 32 will be described, but since both have the same structure, they will be collectively described in FIG. An IC memory such as a non-volatile flash memory is used as the storage means 31 and 32. Storage means 31, 3
2 is RAM104A, 104B and RAM105A, 1
05B, built-in clocks 106A and 106B, backup power supplies 107A and 107B, and contact terminal units 108 and 10.
9 are provided respectively. The ink rollers 22 and 25, which are information peculiar to the drum, are provided on the ROMs 104A and 104B.
Information that is the amount of horizontal deviation between the rotation center of the drum and the rotation centers of the press rollers 11 and 12, drum opening rate information that is the range of the holes formed on the drum outer peripheral surfaces 9a and 10a, and the drum. The thickness information of the screens forming the outer peripheral surfaces 9a and 10a and the leaving time information of the printing drums 9 and 10 are stored. Of the above information, the leaving time information can be rewritten every time printing is completed.

The identification control means 20 is a computer equipped with a well-known CPU, and has the printing pressure control motors 74A, 74.
B, thermal head control boards 54 and 64, main body drive section,
Drive motors 99A and 99B, which are drive units in the drum, stepping motors 168A and 168B, various sensors, and ink viscosity detection means 150A and 150B are connected.
The main body drive section includes a drive motor for plate making and sheet feeding, a drive motor for intermediate conveying means and discharge conveying means, drum drive motors 29, 30 and the like, which are not shown. Units 33 and 34 are connected to the identification control means 20. The various sensors include ink temperature sensors 46, 47 and sensors 69A, 69.
B, pulse detection sensors 73A and 73B, and in-drum temperature sensors 87 and 88 are included.

FIG. 7 shows an operation panel 170 provided on the apparatus main body 1. On the operation panel 170, an LCD 171 as a display means for displaying the content of the identification information or the content of the detection information from each sensor, a ten-key 172, a plate-making key 173 for starting the plate-making operation, a print key 174 for starting the printing operation, A selection key 179 is provided. LC
A touch panel switch D171 displays a manual setting key 175, a thermal head setting key 176, a standing up setting key 177, and a density setting key 178. The selection key 179 is a cross key used when selecting an image displayed on the LCD 171 or various switches.
The operation panel 170 having such a configuration, including the LCD 171 and each key, is communicably connected to the identification control means 20. The manual setting key 175, the thermal head setting key 176, the standing-up setting key 177, the density setting key 178, and the selection key 179 are provided separately from the adjustment operation based on the identification information and / or the detection information, the printing pressure adjusting means 80A, Printing pressure adjustment by 80B, thermal head 5
2, 62, plate making perforation diameter adjustment, drive motors 99A, 9
9B rotation adjustment of ink ejection rollers 161A, 161B or stepping motors 168A, 168
It is an operation switch for issuing a command for performing at least one of the number of times of contact / separation operation of the ink push-out rollers 161A and 161B by B.

The identification control means 20 stores the pattern tables shown in FIGS. 8 to 12. The pattern table shown in FIG. 8 is used to obtain the rank numerical value that is the configuration and state of the print drum from the drum specific information stored in the storage means 31 and 32. FIG. 9 is a pattern table for obtaining the ink ejection property from the rank value obtained from FIG. FIG. 10 is a pattern table showing the relationship between the ink temperature and the ink viscosity and the ink ejection property. Figure 1
Reference numeral 1 is a pattern table showing the relationship between the plate making perforation diameter of the thermal heads 52 and 62 and the printing pressure of the press rollers 11 and 12 with respect to the ink ejection property. FIG. 12 is a pattern table showing the relationship between the idling rotation speed, which is the rotation speed of the ink pushing rollers 161A and 161B, and the standing time.

The identification control means 20 includes storage means 31, 32.
At the time of communication with the thermal head 52 corresponding to the ink ejection property, the ink ejection property is obtained from the pattern tables of FIGS.
The press roller 1 that controls the voltage applied to 62 to control the thermal head drive substrates 54 and 64 so as to adjust the heat generation energy and that corresponds to the ink dischargeability.
Printing pressure control motors 74A, 74B
Is configured to control the operation of the. The identification control means 20 determines the ink ejection roller 16 based on the standing time information.
The number of rotations [idling rotation number] of 1A and 161B is obtained from the map of FIG. 12, the driving of the drive motors 99A and 99B is controlled by the number of idling rotations, and the ink push-out rollers 161A and 161B is held at the first position (contact position) shown in FIG. 4, and is moved to and held at the second position (separated position) shown in FIG. It is configured to control the drive.

The overall operation of the stencil printing machine will be described with reference to FIG. Here, it is assumed that the printed master is wound around the print drums 9 and 10, and new masters are wound around both drums.

When the plate making key 173 of FIG. 5 is operated, the printed master is discarded from the printing drums 9 and 10 by the plate discharging means 7A and 7B shown in FIG. At the same time, the original image is read by the image reading device 2, the heat generation of the thermal heads 52 and 62 is controlled so as to form a plate-making image corresponding to the original image, and the plate-making masters 50 and 60 are perforated.

The plate-made master is the drum outer peripheral surface 9a, 1
0b, the number of prints is set by the ten keys 172 of FIG. 7, and the print key 174 is operated, the printing operation starts. In the printing operation, the drum drive motor 29 of FIG.
30 is driven to rotate the printing drums 9 and 10 in the direction of the arrow, and a paper feed system drive motor (not shown) is driven so that the paper 17 stacked on the paper feed tray 3 is moved by the paper feed roller group 15. The sheets are separated one by one and fed toward the registration roller pair 16. The supplied paper 17 is
The printing timing is adjusted by the pair of registration rollers 16 and the sheet is sent between the press roller 11 and the printing drum 9 (first printing unit) which are in contact with and separated from each other. The sent paper 17 is pressed against the drum outer peripheral surface 9a by the printing pressure of the press roller 11, and the ink in the printing drum 9 is exposed on a screen (not shown).
The image is printed by being transferred through the plate-making master.

The sheet 17 printed by the first printing unit is placed between the press roller 12 and the printing drum 10 which are in contact with and separated from each other (second sheet).
It is sent to the printing section) by the intermediate conveying means 13. The sent paper 17 is pressed against the outer peripheral surface 10a of the drum by the printing pressure of the press roller 12, and the ink in the print drum 10 is transferred through the screen and the plate-making master to print an image. The sheet 17 printed by the second printing unit is conveyed to the sheet discharge tray 4 by the sheet discharge conveying unit 14. Such a printing operation is performed until the set number of prints is reached, and when the printing of the predetermined number of prints is completed, the printing operation is stopped.

The adjustment operation by the identification control means 20 will be described. This operation is executed after the drum units 9A and 10A are mounted on the apparatus main body 1. When the drum units 9A and 9B are correctly set in the apparatus main body 1, the information stored in the storage means 31 and 32 is read from the units 33 and 34, and the information is displayed on the LCD 17 shown in FIG.
It is displayed in 1. The identification control unit 20 obtains the ink ejection property of each printing drum from the read information using the pattern tables shown in FIGS.
It is displayed on D171.

In the identification control means 20, the manual setting key 17
If No. 5 is not operated, the recommended setting set in the pattern table is executed. Here, the applied voltage to the thermal heads 52 and 62 and the printing pressure of the press rollers 11 and 12 are adjusted based on the ink ejection property obtained from the pattern tables shown in FIGS. 8 and 9, and the ink ejection is performed based on the standing time information. The number of rotations of the rollers 161A and 161B is adjusted.

When the information stored in the storage means 31 and 32 is, for example, an offset of 3.5 mm, a plate cylinder aperture ratio of 28%, and a screen of 320, the rank values are -1, 0, +1 respectively. Is added, the ink ejection property of each printing drum is classified into "medium" from FIG. Then, based on the information of the "medium" ink ejectability, the thermal head drive substrates 54 and 64 are controlled so that the plate making perforation diameter by the thermal heads 52 and 62 becomes "medium" as shown in FIG. The printing pressure control motors 74A and 74B are controlled so that the printing pressure is 14.0 to 16.0 kgf.

In the present embodiment, the ink temperature and the in-drum temperature are detected by the ink temperature sensors 46 and 47 and the in-drum temperature sensors 87 and 88, respectively. Therefore, the ink ejection property is obtained from the detection information from the pattern table of FIG. , Printing pressure control motors 74A, 74 based on ink dischargeability
B is controlled. For example, when the ink temperature is 28 to 40 ° C., the ink ejection property is “large”, so the printing pressure is 12.
The printing pressure control motors 74A and 74B are controlled so as to be as small as 0 to 14.0 kgf. Alternatively, the thermal head drive substrates 54 and 64 are set so that the plate making perforation diameter is “medium to small”.
May be controlled to control the applied voltage to the thermal heads 52 and 62.

The standing time detected by the identification control means 20 is
For example, in the case of 26 hr (hour), the idling rotation number of the ink extruding rollers 161A and 161B before printing is performed 30 times, and in the case of leaving time of 10 hr (hour), the idling rotation number is reduced to 15 times. .

13, 14, and 15 show the display contents of the LCD 171 when the manual setting key 175 of FIG. 7 is operated. FIG. 13 is a screen displayed when the manual setting key 175 is operated and the thermal head setting key 176 is operated. On this screen, an ink discharge property of each print drum, a current recommended setting, a manual input screen, and a key 179 for selecting the recommended setting are displayed. When the operation device operator (operator) operates the ten-key pad 172 of FIG. 7 to set the pulses for the thermal heads 52 and 62, and the print key 174 of FIG. 5 is operated, the thermal head is based on the manually input information. The applied energy (applied voltage) to 52 and 62 is controlled to adjust the plate making perforation diameter. When the adjustment operation is performed with the recommended setting without performing the adjustment with the manual setting, the key 179 is operated and the print key 174 is operated.
By operating, the adjustment operation according to the above-described recommended setting is executed.

FIG. 14 is a screen displayed when the manual setting key 175 is operated and the stand-by standing setting key 177 is operated. On this screen, the time left for each printing drum, the current recommended setting display, the manual input screen, and a key 179 for selecting the recommended setting are displayed. The operator operates the ten-key pad 172 of FIG.
When the number of idling rotations of 61A and 161B is set and the print key 174 of FIG. 7 is operated, the stepping motors 168A and 168B are driven and the ink pushing rollers 161A and 161B are moved from the second position (separated position).
After moving to the first position (contact position), the rotation of the drive motors 99A and 99B is controlled based on the manually input information, and the ink ejection rollers 161A and 161B rotate for the set number of rotations. When selecting the recommended setting, the key 179 may be operated.

FIG. 15 shows a screen displayed when the manual setting key 175 is operated and the density setting key 178 is operated. In this screen, the ink ejection property of each printing drum,
A current recommended setting display, a manual input screen, and a key 179 for selecting the recommended setting are displayed. When the operator operates the ten-key pad 172 of FIG. 7 to set the printing pressure of the ink rollers 11 and 12, and the print key 174 of FIG. 7 is operated, the printing pressure control motor 74 is operated based on the manually input information.
The rotation directions and the rotation amounts of A and 74B are controlled, and the ink rollers 11 and 12 are applied with the set printing pressure to the drum outer peripheral surfaces 9a and 10B.
Press against a. To select the recommended setting, press key 17
9 should be operated.

As described above, since the ink dischargeability is obtained from the unique information of the print drums 9 and 10 and each part is controlled according to the ink dischargeability, the configuration and state of the print drums 9 and 10 mounted on the apparatus main body 1 are determined. According to the above, an appropriate adjustment is performed and a good printed matter can be obtained.

In FIG. 16, the storage means 31, 32 are replaced by I
This is a form using D-labeled 97A and 97B. ID indicator 9
7A and 97B are well-known items such as bar code seals and DIP switches, and are provided on the side plates (not shown) of the printing drums 9 and 10 or the drum unit frames 48 and 49.
These ID markers 97A and 97B are merely for identifying the drum and do not have a memory function.

In the CBU of the identification control means 20A when the ID indicators 97A and 97B are used, the ROM 104 and the RAM are provided.
105 and the ID recognition devices 98A and 98B for reading the ID indicators 97A and 97B are connected. The built-in clock 106 and the backup power supply 107 are connected to the RAM 105. C
Similar to the identification control unit 20, the PU is connected to a series of components from the printing pressure control motor to the ink viscosity mark detection unit.

The ROM 104 stores the configuration and state of the print drum for each ID marker, and the pattern tables of FIGS. 6 to 10. The identification control unit 20A recognizes the ID information of each print drum read by the ID recognition devices 98A and 98B, and determines the configuration condition and the standing time of each drum ROM10.
4 is read out to the RAM 105. Based on this information, a predetermined ink ejection property is obtained from the pattern tables of FIGS. 8 to 12, and the heating voltage is adjusted by controlling the applied voltage to the thermal heads 52 and 62 corresponding to this ink ejection property. The thermal head drive boards 54 and 64 are controlled. Further, the identification control means 20A is
From FIG. 12, the printing pressures of the press rollers 11 and 12 corresponding to the ink dischargeability are obtained, the operations of the printing pressure control motors 74A and 74B are controlled, and the number of idling rotations of the ink pushing rollers 161A and 161B is determined based on the standing time information from FIG. The driving roller 99 is obtained by the number of times of idling rotation.
A, 99B drive and stepping motor 168A, 16
8B driving is controlled.

ID markers 97A and 97B having such a configuration
Read the ID of the print drum from the
The information related to the above is read out from the ROM 104, the ink ejection property is obtained by using the pattern tables of FIGS. 8 and 9, and the heat generation of the thermal heads 52 and 62 and the press roller 11, which is a configuration related to the ink ejection property from the ink ejection property, Since the printing pressure of 12 is adjusted, appropriate adjustment is performed according to the configuration and state of the printing drums 9 and 10 mounted on the apparatus main body 1,
Good printed matter can be obtained.

FIG. 17 shows a modification of the operation panel. This operation panel 170A has a density setting key 17 shown in FIG.
8 to replace the new density setting key 180 with the operation panel 1
70A, the density, the printing pressure level, etc. are displayed on the display unit 181 using an LED or the like. The density setting key 180 is a key 180a used to reduce the print density, a key 180b used to set the standard density, and a key 180c used to increase the print density.
It consists of

In this embodiment, when the key 180b is operated,
The printing pressure control motors 74a and 74b are controlled so that the printing pressure is from 14.0 to 16.0 kgf in FIG. 11, and the lighting position of the lamp of the display unit 181 is controlled correspondingly to this. When the key 180a is operated, the printing pressure control motors 74a, 74a,
74b is controlled, and in response to this, the lighting position of the lamp of the display unit 181 is also controlled to change. Key 180
When c is operated, the printing pressure control motors 74a and 74b are controlled so that the printing pressure changes in a stepwise higher direction, and in response to this, the lamp lighting position of the display unit 181 is also controlled to change. .

FIG. 18 shows the LCD 17 when the manual setting key 175 is operated and the standing up setting key 177 is operated.
It is a modification of the image displayed in No. 1. In the example shown in FIG. 14, the ink extruding rollers 161A, 1
The screen configuration is such that the number of idling rotations of 61B is input with the ten key 172, but in the example shown in FIG. 18, the leaving time of each printing drum is input with the ten key 172. The LCD 171 shown in FIG. 18 displays a leaving time of each print drum, a current recommended setting, a manual input screen, and a key 179 for selecting the recommended setting.

When the leaving time can be manually input as described above, the print drum 9 recorded on the ROM 104 for each ID,
It can be adjusted even when the leaving time of 10 and the actual leaving time of the printing drums 9 and 10 mounted on the apparatus main body 1 are different. When the drum units 9A and 10A include the storage means 31 and 32, the storage time can be stored in each storage means, and there is no gap between the stored storage time and the actual storage time. However, ID indicator 9
In the case of the drum units 9A and 10A equipped with 7A and 97B, since the standing time cannot be stored in the drum units 9A and 10A side, the drum units 9A and 10A removed from the apparatus body 1 were used in another stencil printing machine. In this case, the standing time stored in the ROM 104 is different from the actual standing time.

Therefore, when the drum units 9A and 10A used in such another apparatus are mounted on the apparatus main body 1, the operator manually inputs the leaving time so that the memory contents of the ROM 104 and the actual drums can be changed. It is possible to fill the gap with the above state and perform appropriate adjustment according to the configuration and state of the printing drums 9 and 10 mounted on the apparatus main body 1 to obtain a good printed matter.

The adjustment control performed in the above-described embodiment is premised on the case where the adjustment control is not performed. However, the storage means 31, 32 or the ROM 104 stores the adjustment history indicating when the adjustment control was performed. Is also good. In this case, a pattern table in consideration of the adjustment history contents is created, and if the adjustment control has already been performed, the above-mentioned identification control means 20, using the adjustment history pattern table,
Each adjustment control may be performed at 20A.

In the above embodiment, the press rollers 11 and 12 are used as the printing members, and the press rollers are contacted with and separated from the outer peripheral surfaces 9a and 10a of the drum. The type is not limited to this type. For example, the present invention may be applied to a stencil printing machine using a well-known impression cylinder that can freely come into contact with and separate from the drum outer peripheral surfaces 9a and 10a as a printing pressure member. In this case, the printing pressure drive motor for controlling the printing pressure by the impression cylinder may be connected to the identification control means 20 or the identification control means 20A and may be the control target.

FIG. 19 shows a stencil printing machine of the type in which the printing drums 40 and 41 are arranged so as to face each other and printing is performed on the paper 17 between them. The stencil printing machine shown in FIG.
Only one plate making means 5 is provided, the drum unit for making the plate is set at a position where the printing drum 290 is mounted to perform the plate making, and the printing drum around which the master is wound is set at a desired position. In the stencil printing apparatus shown in FIG. 19, the printing drums 40 and 41 serve as printing members for each other.

In the stencil printing machine shown in FIGS. 19 and 20, the printing drums 40, 41, 290, 291, 292,
293 is the outer peripheral surface 40a, 41a, 290a,
291a, 292a, 293a has a well-known configuration in which it can be bulged and displaced outward.

In FIG. 19, the plate making means 5 and the plate discharging means 7A correspond to the printing drum 40, and the plate making means 6 and the plate discharging means 7B correspond to the printing drum 41. In FIG. 19, reference numerals 187 and 188 denote drum drive motors, reference numerals 82 and 85 denote ink rollers, and reference numeral 81,
Reference numeral 84 is a doctor roller, reference numerals 83 and 86 are ink reservoirs, and reference numerals 161A and 161B are ink ejection rollers. Reference numerals 480 and 490 denote the print drum 40,
The drum unit frame which supports 41 respectively and can be attached or detached with respect to the apparatus main body 100 is shown. Printing drum 40,
The drum 41 is supported by the drum unit frames 480 and 490 to form the drum units 40A and 41A. Reference numerals 93 and 95 denote storage means, and reference numerals 94 and 96 denote units for reading / writing information stored in the storage means 93 and 95, respectively. Storage means 93,
95 is attached to either the print drum 40, 41 or the drum unit frame 480, 490,
4, 96 are arranged on the apparatus main body 100 side. The stencil printing apparatus shown in FIG. 19 does not have an ink viscosity detecting means, but it may be mounted like the stencil printing apparatus of FIG.

In FIG. 20, plate discharge means 7A, 7B, 7
C and 7D are print drums 290, 291, and 29, respectively.
2, 293. Reference numerals 114 and 11
5, 116, 117 are print drums 290, 291, 29
Drum drive motor for rotating 2,293, reference numeral 12
5, 126, 127 and 128 are ink rollers, reference numeral 12
1, 122, 123 and 124 are doctor rollers, reference numeral 12
Reference numerals 9a, 129b, 129c and 129d denote ink reservoirs, and reference numerals 161A, 161B, 161C and 161D denote ink ejection rollers. Reference numerals 401 and 40
2, 403, 404 are print drums 290, 291, 2
The drum unit frames that respectively support 92 and 293 and are detachable from the apparatus main body 200 are shown.
The print drums 290, 291, 292, 293 are supported by the drum unit frames 401, 402, 403, 404, so that the drum units 290A, 291A,
292A and 293A. Reference numerals 131 and 132,
Reference numerals 135, 136, 1 denote storage means 133, 134.
37 and 138 are storage means 131, 132, 133 and 13
4 shows units for reading / writing information stored in FIG. Storage means 131, 132, 13
3,134 are printing drums 290, 291, 292, 2
93 or drum unit frame 401, 402, 4
It is attached to either 03 or 404, and the unit 135 or 1
36, 137, 138 are arranged on the apparatus main body 200 side.

The stencil printing machine shown in FIG. 19 includes displacement means for bulging and displacing the drum outer peripheral surfaces 40a, 41a and printing pressure adjusting means for adjusting the pressure contact force of one drum outer peripheral surface to the other drum outer peripheral surface. I have it. The stencil printing machine shown in FIG. 20 also has drum outer peripheral surfaces 290a, 291a, 2
Displacement means for expanding and displacing 92a, 293a, and the impression cylinder 2 of the drum outer peripheral surfaces 290a, 291a, 292a, 293a.
Although the printing pressure adjusting means for adjusting the pressure contact force of the outer peripheral surface 250a of each of 50 is provided, the same configuration as that shown in FIG. 19 is applied, and therefore the description thereof is omitted here.

The displacement means 191 and the printing pressure adjustment means 208 provided in the stencil printing machine shown in FIG. 19 will be described with reference to FIG. The displacement means 191 on the printing drum 40 side and the displacement means 208 on the printing drum 41 side are described in JP-A-11-
Since the technology is already known in Japanese Patent No. 114136, only its schematic configuration will be described here.

The displacement means 191 mainly includes a pair of bases 192 arranged in the paper width direction, a first support member 193, a second support member 194, a support plate 197, an electromagnetic solenoid 198 as a drive source, a stopper 199 and the like. It is configured. The base 192 is disposed on the support shaft 182 of the printing drum 40, and is fixed to the support shaft 182 by a mounting member (not shown). The first support member 193 is swingably supported by the base 192 via the shaft 101.
The base 192 is connected to the first support member 93 via the tension spring 104. Due to the biasing force of the tension spring 104, a counterclockwise rotating biasing force about the support shaft 101 is applied to the first support member 93.

The second support member 194 includes a pair of side plates 194a arranged outside the base 192 and each side plate 194a.
It is mainly composed of a reinforcing member 194b for connecting with each other and a locking rod 194c provided between the side plates. The second support member 194 is swingably supported by the swing shaft 102 by a bearing 194d arranged in the center of the reinforcing member 194b.

The ink roller 82 is rotatably supported by a shaft 82a between the side plates and is rotationally driven by a drive motor (not shown). The doctor roller 81 is also arranged between the side plates. A cam follower (not shown) that comes into contact with a cam portion (not shown) that rotates in synchronization with the rotation of the printing drum 40 is provided at the end of the support shaft 82a. Ink roller 82
When the cam follower comes into contact with the convex portion of the cam portion, the outer peripheral surface thereof is separated from the inner peripheral surface of the porous support plate constituting the drum outer peripheral surface 40a, and when the cam follower leaves the convex portion of the cam portion. In addition, the outer peripheral surface of the flange is configured to project from the outer peripheral surface of the flange (not shown).

The support plate 197 is fixed on the support shaft 182 by a mounting member (not shown). A solenoid 198, a stopper 199, etc. are attached to the support plate 197. A stopper 199 having an L shape, one end 199a of which is bent outward in a hook shape and engageable with the locking rod 194c, has its bent portion 199b pivoted to the support plate 197 by the support shaft 103. It is freely attached and is connected to the plunger 198a of the solenoid 198 in an elongated hole 199c formed between the one end 199a and the bent portion 199b. The stopper 199 is biased by a biasing means (not shown), and a clockwise biasing force about the support shaft 103 is applied.

According to the displacement means 191 having such a structure, when the solenoid 198 is driven to release the locked state between the stopper 199 and the locking rod 194c, the ink roller 82 moves downward about the shaft 101. Once moved, the drum outer peripheral surface 40a bulges toward the drum outer peripheral surface 41a.

Reference numeral 185 indicates a printing pressure adjusting means on the printing drum 40 side. The printing pressure adjusting means 185 is used for the tension spring 1
04 and the first support member 193. The configuration of the printing pressure adjusting means 185 is the printing pressure adjusting means 80 shown in FIG.
There is a configuration similar to that of A. Here, the printing pressure control motor 186 is used.
Is equipped with. That is, by rotating the printing pressure control motor 186, the spring force of the tension spring 104 is adjusted,
The ink roller 82 adjusts the pressure contact force of the printing drum 40 that swells toward the drum outer peripheral surface 41a and presses against it.

The displacement means 208 is mainly composed of a base 215, a support member 216, a support member 219, a solenoid 220, a stopper 221 and the like. The base 215 is
Side walls 215a are provided at both ends. Each of the side wall portions 215a has a substantially U-shape, and the printing drum 41
Grooves 215b into which the support shafts 205 can be fitted are formed respectively. On the front end side between the side wall portions 215a, a rod-shaped reinforcing member 215c (not shown) for preventing the side wall portions 215a from falling is attached, and a notch portion (not shown) is formed in the center of the front end of the base 215. . The base 215 is fixed by a mounting member (not shown) with each groove 215b fitted to the support shaft 205.

The supporting member 216 includes two side plates 216a arranged outside each side wall portion 215a and each side plate 216a.
The support shaft 2 is mainly configured by a connecting rod 216b that connects the two and side plates 216a and a locking rod 216c provided between the side plates 216a.
It is swingably supported by the base 215 by 22. The base 215 also connects the tension spring 223 to the support member 216. Due to the urging force of the tension spring 223, the support member 216 is centered on the support shaft 222,
A clockwise biasing force is applied.

An ink roller 85 and a doctor roller 84 are arranged between the side plates 216a. Ink roller 8
5 is rotatably supported by each side plate 216a by a support shaft 85a, and is rotationally driven by a drive motor (not shown). At both ends of the support shaft 85a, cam followers that come into contact with cam portions (not shown) are provided. When the cam follower comes into contact with the convex portion of the cam portion, the ink roller 85 has its outer peripheral surface separated from the inner peripheral surface of the porous support plate forming the drum outer peripheral surface 41a, and the cam follower contacts the concave portion of the cam portion. When they come into contact with each other, the outer peripheral surface thereof is configured to project from the outer peripheral surface of a flange (not shown).

Support member 219 formed by bending a plate material
Is attached to the inner surface of the base 215 by screwing or the like, and the solenoid 220 is attached to the support member 219. The stopper 221 has a rod 221d, and is rotatably supported by a support shaft 225 on a bracket (not shown) fixed to the base 215. Further, a tension spring (not shown) is stretched between the stopper 221 and a bracket (not shown), and the stopper 221 is given a counterclockwise rotating biasing force about the support shaft 225. The tip of the stopper 221 is
It is formed in a shape that can be engaged with the locking rod 216c. One end of the rod 221d includes the plunger 2 of the solenoid 220.
A pin 227a provided on the other end of the operating piece 227 rotatably supported by 20a is engaged. Actuating piece 227
Is a mounting member 228 attached to the solenoid 220.
It is rotatably supported by.

When the solenoid 220 is driven by the displacing means 208 having such a structure to release the locked state between the stopper 221 and the locking rod 216c, the ink roller 8 is released.
5 moves upward around the support shaft 222, and the drum outer peripheral surface 41a bulges toward the drum outer peripheral surface 40a. In this way, the two drum outer peripheral surfaces 40a and 41a bulge each other, so that the drum outer peripheral surfaces 40a and 40b are pressed against each other.

Reference numeral 235 indicates a printing pressure adjusting means on the printing drum 41 side. The printing pressure adjusting means 235 is used for the tension spring 2
It is arranged between 23 and the base 215. The printing pressure adjusting means 235 has the same structure as the printing pressure adjusting means 80b shown in FIG. 2, and is provided with a printing pressure control motor 236 here. That is, by rotating the printing pressure control motor 236, the spring force of the tension spring 223 is adjusted, and the press contact force of the printing drum 41 that bulges toward the drum outer peripheral surface 40a by the ink roller 85 and presses is adjusted. Is configured. The printing pressure of the printing drum 41 is adjusted. In this embodiment, the print drum 4
0 and 41 are usually 3 between the outer peripheral surfaces 40a and 41a of the drum.
They are arranged so as to be separated by about a millimeter, and this separation distance is used as an offset amount.

The operation of the stencil printing machine shown in FIG. 19 will be briefly described. Here, the printed master is wound around the print drums 40 and 41, and a new master is printed on the print drum 4.
A case will be described below in which both 0 and 41 are wound and double-sided printing is performed. The stencil printing machine includes an operation panel 1 shown in FIG.
70 is applied.

When the plate making key 173 shown in FIG. 7 is operated, the printed master is discarded from the printing drums 40 and 41 by the plate discharging means 7A and 7B shown in FIG. In parallel with this, the original image is read by the image reading device 2 and the thermal heads 52, 6 are formed to form a plate-making image corresponding to the original image.
2 is subjected to heat generation control, and plate-making perforations are performed on the plate-making masters 50 and 60.

The master made by plate making is the outer peripheral surface 40a of the drum,
41a, the number of prints is set by the ten keys 172 of FIG. 7, and the print key 174 is operated, the printing operation starts. In the printing operation, the drum drive motor 1 shown in FIG.
87 and 188 are driven to rotate the printing drums 40 and 41 in the directions of the arrows, and a drive motor (not shown) is driven to feed the sheets 17 stacked on the sheet feed tray 3.
Are separated one by one by the paper feed roller group 15 and are fed toward the registration roller pair 16. The fed paper 17 is sent between the drum outer peripheral surface 40a and the drum outer peripheral surface 41a (printing unit), which are swelled and pressed against each other, at the printing timing by the registration roller pair 16. Both sides of the sent paper 17 are pressed against the outer peripheral surfaces 40a and 41a of the drums by the printing pressure in the printing unit, and the ink in the print drums 40 and 41 is transferred through a screen (not shown) and a plate-making master. Double sided images are printed.

The sheet 17 printed by the printing section is conveyed to the sheet discharge tray 4 by the sheet discharge conveying means 14. Such a printing operation is performed until the set number of prints is reached, and when the printing of the predetermined number of prints is completed, the printing operation is stopped.

When the identification control means 20 or the identification control means 20A is applied to the stencil printing machine having such a configuration, each drive motor or sensor is connected to the identification control means 20 or the identification control means 20A. As a result, the printing pressure adjusting means 185, 235 and the thermal heads 52, 6 are started.
2. Drive motors 99A and 99B and stepping motor 1
68A, 168B, etc. will be controlled based on the ink ejection property obtained from the information read from the storage means 93, 95, depending on the configuration and state of the printing drums 40, 41 mounted on the apparatus main body 100. Appropriate adjustments can be made and good printed matter can be obtained.

The printing pressure adjusting means in the stencil printing machine shown in FIG. 20 is the same as that shown in FIG. 21, and there are a total of four printing pressure control motors. That is, the printing pressure control motor used for the printing drum 290 is 186
A, the printing pressure control motor used for the printing drum 291 is 1
86B. The printing pressure control motor used for the printing drum 292 is 236A, and the printing pressure control motor used for the printing drum 294 is 236B. In addition, the ink roller 125,
Two displacing means 191 are provided as displacing means for 126, and displacing means 2 as displacing means for the ink rollers 127 and 128.
Two 08 are provided. Also, the printing drum 29
Inks of different colors are supplied to 0, 291, 292, and 293. Here, it is assumed that the printing drum 290 is supplied with black ink, the printing drum 291 is supplied with cyan ink, the printing drum 292 is supplied with magenta ink, and the printing drum 293 is supplied with yellow ink.

The operation of the stencil printing machine shown in FIG. 20 will be briefly described. Here, a case where the printed master is wound around all the printing drums and a new master is wound around all the printing drums for printing will be described. It is assumed that the operation panel 170 shown in FIG. 7 is applied to this stencil printing apparatus.

When the plate making key 173 shown in FIG. 7 is operated, the printed master is printed on the printing drums 290, 291, 292, 2 by the plate discharging means 7A, 7B, 7C, 7D shown in FIG.
Discarded from 93. In parallel with this, the original image is read by the image reading device 2, and the read image is color-separated into ink colors to form a plate-making image.
2 is subjected to heat generation control, and plate-making perforation is performed on the plate-making master 50 to form a plate-making image corresponding to yellow. When the master made by plate making is wound around the outer peripheral surface 290a of the drum, the apparatus is temporarily stopped, the print drum is replaced with the print drum 292 of the next color, and plate making corresponding to magenta is performed. After that, the plate making operation is continued until the winding of the plate made master on all the printing drums is completed.

When the plate making operation is completed, the number of printed sheets is set by the ten keys 172 of FIG. 7 and the print key 174 is operated, the printing operation is started. In the printing operation, the drum drive motors 114, 115, 116, 117 of FIG. 20 are driven to rotate the print drums 290, 291, 292, 293 in the arrow direction, and the impression cylinder 250 is rotated in the arrow direction by the drive motor (not shown). . In association with these operations, a paper feed system drive motor (not shown) is driven to separate the sheets 17 stacked on the paper feed tray 3 one by one by the paper feed roller group 15 and head toward the registration roller pair 16. Will be fed. The fed paper 17 is the registration roller pair 16
The printing timing is adjusted by the sheet feeding method, the sheet is sent to the impression cylinder 250, is held by a well-known nail (not shown) of the impression cylinder 250, and is wound around the outer peripheral surface 250a of the impression cylinder 250. Then, the yellow image is printed from the print drum 293 in the first rotation of the impression cylinder 250, and the print drum 292 is printed in the second rotation.
From the printing drum, the cyan image is printed from the printing drum 291 in the third rotation, and the black image is printed from the printing drum 290 in the fourth rotation.

When the impression cylinder 250 makes four revolutions, the nail (not shown) is opened to release the paper 17 on which the four colors have been printed. After being opened, the sheet 17 is conveyed to the sheet ejection tray 4 by the sheet ejection conveying unit 14. Such a printing operation is performed until the set number of prints is reached, and when the printing of the predetermined number of prints is completed, the printing operation is stopped.

When the identification control means 20 or the identification control means 20A is applied to the stencil printing machine having such a configuration, each drive motor or sensor is connected to the identification control means 20 or the identification control means 20A. As a result, the thermal head 52 starts the printing pressure adjusting means 191 and the printing pressure adjusting means 208, and the thermal head 52 stores the storage means 131, 132, 133, and 13.
4 is controlled based on the ink ejection property obtained from the information read out from No. 4, and appropriate adjustment can be performed according to the configuration and state of the printing drums 290, 291, 292, 293 mounted on the apparatus main body 200. Good prints can be obtained. The stencil printing machine shown in FIG. 20 does not have the structure of an ink pushing roller, but the printing drums 290, 29
Of course, it does not matter even if it is provided in 1, 292, 293.

In the above-described embodiment, when the ink push-out rollers 161A and 161B occupy the first position shown in FIG. 4, the inner peripheral surfaces of the print drums 9 and 10 and the print drums 40 and 41 and the ink rollers 22, 25 and the outer peripheral surfaces of the ink rollers 82 and 85 are contacted and rotated. For this reason,
The so-called "loose ink" adhering to the inner peripheral surface of each drum is extruded from the inside of each printing drum to the outer peripheral surface of each drum by the extruding action of the ink extruding rollers 161A and 161B. It is possible to encourage the supply of new ink from. The loose ink attached to the ink pushing rollers 161A and 161B is returned from the outer peripheral surfaces of the ink pushing rollers 161A and 161B to the respective ink reservoirs via the outer peripheral surfaces of the respective ink rollers.
For this reason, the loosened ink is mixed with the ink in each ink reservoir, adjusted to have an appropriate viscosity, and reused for printing, and the amount of discarded ink can be reduced.

In the present embodiment, the ink pushing rollers 161A and 161B are the drive motors 99A and 99B.
The number of rotations is controlled by controlling the drive of the drive motors 99A and 99B, but the invention is not limited to such a form. For example, the ink push-out rollers 161A and 161B may be rotatably provided on the arm 162 and may rotate together with the rotation of each ink roller and each printing drum when the first position is occupied. Alternatively, the number of times the ink push-out rollers 161A and 161B are brought into contact with and separated from each other, that is, the number of times the stepping motors 168A and 168B are driven is controlled based on the standing time information, and the number of times of ink push-out and rotation by the ink push-out rollers 161A and 161B is printed. The configuration may be such that adjustment is possible for each drum.

[0099]

According to the present invention, the configuration and state of each printing drum is identified from the information read from the storage means, and the configuration relating to the ink ejection property is controlled by the identification control means based on the identified information. Appropriate adjustments are made according to the configuration and state of the print drum mounted on the apparatus body, and good printed matter can be obtained.

According to the present invention, the configuration and state of the print drum is identified for each ID mark from the configuration and state of the print drum stored for each ID label, and the configuration relating to the ink ejection property is identified based on the identified information. Since the control is performed by the identification control means, appropriate adjustment can be performed according to the configuration and state of the print drum mounted on the apparatus main body, and a good printed matter can be obtained. Further, since it is not necessary to store the information peculiar to the drum on the printing drum side, the cost can be reduced as compared with the case where the storage means is provided.

According to the present invention, the ink ejection property of each printing drum is obtained from the identification information identified by the identification control means, and the plate-making master using the thermal bed, which has a structure related to the ink ejection property based on the ink ejection property. Since the plate-making perforation diameter is adjusted for each printing drum, the plate-making perforation diameter can be adjusted to an appropriate size according to the configuration and state of the printing drum attached to the apparatus main body, and a better printed matter can be obtained.

According to the present invention, the number of rotations and the number of contact / separation operations of the ink ejecting roller, which is a structure related to the ink ejection property, are adjusted for each printing drum based on the information about the standing time of the printing drum identified by the identification control means. As a result, it is possible to adjust the ink viscosity to an appropriate value according to the configuration and state of the printing drum mounted on the apparatus main body, and it is possible to obtain a better printed material.

According to the present invention, the ink ejection property of each printing drum is obtained from the identification information identified by the identification control means, and the pressure contact force of the printing member, which is the structure relating to the ink ejection property, is determined based on this ink ejection property. Since it is adjusted for each print drum, the printing pressure member can be adjusted to an appropriate pressure contact force according to the configuration and state of the print drum mounted on the apparatus main body, and a better printed matter can be obtained.

According to the present invention, the ink dischargeability of each printing drum is obtained from the detection information from the temperature detection means, and the pressure contact force by the printing pressure adjusting means, which is a structure related to the ink dischargeability based on the ink dischargeability, is printed. Since the adjustment is performed for each drum, the printing pressure member can be adjusted to an appropriate pressure contact force according to the temperature inside the printing drum mounted on the apparatus main body, and a better printed matter can be obtained.

According to the present invention, the ink ejection property of the printing drum is obtained from the detection information from the ink temperature detection device, and the pressure contact force by the printing pressure adjusting device, which is a structure related to the ink ejection property based on the ink ejection property, is printed. Since it is adjusted for each drum, it is possible to adjust the printing pressure member to an appropriate pressure contact force according to the ink temperature of the printing drum installed in the main body of the device.
A better printed matter can be obtained.

According to the present invention, the ink dischargeability of the printing drum is obtained from the detection information from the ink viscosity detection means, and the pressure contact force by the printing pressure adjusting means, which is a structure related to the ink dischargeability based on the ink dischargeability, is printed. Since it is adjusted for each drum, it is possible to adjust the printing pressure member to an appropriate pressure contact force according to the ink viscosity of the printing drum mounted on the main body of the device,
A better printed matter can be obtained.

According to the present invention, the content of the identification information or the content of the detection information is displayed on the display means, and the identification information and / or
Alternatively, separately from the adjustment operation based on the detection information, the printing pressure adjustment by the printing pressure adjustment means, the plate making perforation diameter adjustment by the thermal head, the rotation adjustment of the ink ejection roller by the drive source, or the ink ejection by the drive means is performed separately from the adjustment operation based on the detection information. Since the number of times the rollers are brought into and out of contact with each other can be adjusted, it is possible to manually make fine adjustments and a desired printing state with reference to the result displayed on the display unit, and obtain a desired printed matter.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a printing apparatus according to an embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view showing an internal configuration of one printing drum and a configuration of a printing pressure adjusting unit.

FIG. 3 is an enlarged view showing a second position of an ink pushing roller and a configuration of a driving unit.

FIG. 4 is an enlarged view showing a first position of an ink push-out roller and a configuration of a driving unit.

FIG. 5 is a circuit diagram showing a configuration example of ink viscosity detection means.

FIG. 6 is a block diagram showing a storage unit, an identification control unit, and a main configuration connected to the storage unit.

FIG. 7 is a plan view showing a configuration example of an operation panel including operation switches.

FIG. 8 is a pattern table for obtaining the level of the print drum.

FIG. 9 is a pattern table for obtaining the ink ejection property of a printing drum.

FIG. 10 is a pattern table showing the relationship between ink temperature and ink viscosity and ink dischargeability.

FIG. 11 is a pattern table for determining the perforation diameter and the printing pressure based on the ink ejection property.

FIG. 12 is a pattern table for obtaining the number of rotations of the ink pushing roller from the standing time.

FIG. 13 is a plan view showing a screen configuration displayed on the display means when the thermal head is manually adjusted.

FIG. 14 is a plan view showing the configuration of a screen displayed on the display means during manual adjustment of standing up.

FIG. 15 is a plan view showing a screen configuration displayed on a display unit when a print density is manually adjusted.

FIG. 16 is a block diagram showing an ID mark, an identification control unit corresponding to the ID mark, and a main configuration connected to the ID mark.

FIG. 17 is a plan view showing another configuration example of an operation panel including operation switches.

FIG. 18 is a plan view showing another example of the screen configuration displayed on the display means at the time of manual adjustment of standing up.

FIG. 19 is an overall configuration diagram of a stencil printing apparatus which is another embodiment of the present invention.

FIG. 20 is an overall configuration diagram of a stencil printing apparatus which is another embodiment of the present invention.

FIG. 21 is an enlarged view showing the internal structure of the printing drum whose outer peripheral surface bulges.

[Explanation of symbols]

1, 100, 200 Device main body 9, 10 Printing drum 9A, 10A, 40A, 41A Drum unit 20, 20A Identification control means 22, 25, 82, 85 Ink roller 27, 28, 89, 90 Ink roller drive source 31, 32 , 93, 95 storage means 40, 41, 290 to 293 swelling type printing drums 46, 47 ink temperature detection means 50, 60 unmade master 52, 62 thermal heads 97A, 97B ID markers 80A, 80B, 185, 235 Pressure adjusting means 87, 88 Temperature detecting means 99A, 99B Ink pushing roller drive sources 131, 132, 133, 134 Storage means 150A, 150B Ink viscosity detecting means 161A, 161B Ink pushing roller 171 Display means 175, 176, 177, 178 , 180 operation switches 191, 208 Position means 260A, the drive means 290A~293A drum unit 260B ink extrusion roller

Claims (10)

[Claims] 1. A printing apparatus, wherein a plurality of drum units that support a printing drum and that have storage means for storing information specific to the drum are detachable from the apparatus main body, are provided in the apparatus main body, and each storage means A printing apparatus capable of reading the stored information, identifying the configuration and state of each print drum from the read information, and having an identification control unit that controls the configuration relating to the ink ejection property based on the identified information. 2. A printing apparatus in which a plurality of printing drums each having an ID mark unique to the drum are detachable from the apparatus main body, are provided in the apparatus main body, and the configuration and state of the printing drums for each ID marker are stored. The printing apparatus includes an identification control unit that identifies the configuration and state of the print drum for each ID marker and controls the configuration related to the ink ejection property based on the identified information. 3. The printing apparatus according to claim 1 or 2, further comprising a thermal head for making plate perforations in an unprinted plate master, and determining the ink ejection property of each printing drum from the identification information identified by the identification control means. A printing apparatus in which the plate making perforation diameter by the thermal bed can be adjusted for each printing drum based on the ink dischargeability. 4. The printing apparatus according to claim 1, 2 or 3, wherein at least an ink ejecting roller that can be contacted with and separated from the inner peripheral surface of each printing drum and is rotatable, and an inner peripheral surface of each printing drum. The driving means for moving the respective ink pushing rollers to a position in contact with each of the printing drums and a position separated from the inner peripheral surface of each printing drum, and a driving source for rotationally driving the respective ink pushing rollers. A printing apparatus in which the number of rotations of each drive source and / or the number of times of contact / separation operation of an ink push-out roller by each drive unit can be adjusted for each print drum based on the information about the standing time of the print drum identified by the unit. 5. The printing apparatus according to claim 1, wherein the printing pressure member is provided so as to be capable of being pressed against the outer peripheral surface of each printing drum, and each drum of each printing pressure member. Printing pressure adjusting means for adjusting the pressure contact force with respect to the outer peripheral surface, respectively, to obtain the ink ejection property of each printing drum from the identification information identified by the identification control device, and each printing pressure adjustment device based on the ink ejection property. A printing device that can adjust the pressure contact force for each printing drum. 6. The printing apparatus according to claim 1, wherein the printing member is arranged to face the outer peripheral surface of each printing drum, and each printing is performed on the outer peripheral surface of the printing member. The identification means has displacement means for bulging and displacing the outer peripheral surface of the drum and printing pressure adjusting means for adjusting the pressure contact force of the outer peripheral surface of each drum with respect to the outer peripheral surface of the printing pressure member. A printing apparatus in which the ink ejection property of each printing drum is obtained from information, and the pressure contact force of each printing pressure adjusting unit can be adjusted for each printing drum based on the ink ejection property. 7. The printing apparatus according to claim 5 or 6, further comprising temperature detecting means for detecting the internal temperature of each printing drum, and the ink dischargeability of each printing drum based on the detection information from each temperature detecting means. A printing apparatus in which the pressure contact force by each printing pressure adjusting unit can be adjusted for each printing drum based on the ink discharge properties obtained. 8. The printing apparatus according to claim 5 or 6, further comprising ink temperature detecting means for detecting the ink temperature in each printing drum, and the ink in each printing drum based on the detection information from each ink temperature detecting means. A printing apparatus in which each ejection property is obtained, and the press contact force by each printing pressure adjusting unit can be adjusted for each printing drum based on the ink ejection property. 9. The printing apparatus according to claim 5 or 6, further comprising ink viscosity detecting means for detecting ink viscosities in the respective printing drums, and inks in the respective printing drums based on detection information from the ink viscosity detecting means. A printing apparatus in which each ejection property is obtained, and the press contact force by each printing pressure adjusting unit can be adjusted for each printing drum based on the ink ejection property. 10. The printing apparatus according to claim 3, wherein the identification information and / or the detection information is displayed on the display unit for displaying the content of the identification information or the content of the detection information. Independently of the adjustment operation based on the above, the printing pressure adjustment by the printing pressure adjustment means, the plate making perforation diameter adjustment by the thermal head, the rotation adjustment of the ink ejection roller by the drive source, or the contact and separation operation of the ink ejection roller by the drive means A printing apparatus having an operation switch that issues a command for performing at least one of the number of times adjustment.