JP4532707B2 - Case unit for printing drum - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a unit having a drum case for storing a printing drum.
[0002]
[Prior art]
Since a printing drum used in a stencil printing apparatus supplies ink from the inside of the drum to the outer peripheral surface of the drum, generally one color ink is used in one printing drum. For this reason, when printing with inks of different colors, they must be replaced with printing drums having inks of different colors, so that the printing drums are detachable from the stencil printing apparatus.
The printing drum detached from the stencil printing apparatus is stored and stored in a dedicated drum case in order to prevent ink drying and adhesion of dust. The drum case has a sticker of the same color as the ink color of the printing drum housed inside, so that the ink color can be seen from the outside of the case.
[0003]
[Problems to be solved by the invention]
Conventionally, since the printing drum is stored and stored in a drum case with the same color seal as the ink color, if there are multiple printing drums stored, there is a misplacement of the printing drum, and the drum case is opened and closed sequentially. Therefore, it was troublesome to confirm that the printing drum had a desired ink color.
[0004]
If the printing drum is left for a long time after printing, the water contained in the ink gradually evaporates and the ink is softened (loosened). The softening of the ink differs depending on whether the printing drum is stored in the drum case or left in the stencil printing apparatus. This is because there are few fluctuations in environmental conditions such as temperature and humidity inside the drum case, and the amount of evaporation is small because of the inside of the drum case, but in the stencil printing machine, the temperature, humidity, etc. before and after use. This is because the environmental conditions vary greatly and the amount of evaporation into the stencil printing apparatus is large. For this reason, even if the printing drum stored in the drum case and the printing drum that is still mounted on the stencil printing apparatus show the same standing time, the amount of ink transferred from the printing drum to the paper during printing The printing drum stored in the printer is greatly different from the printing drum installed in the stencil printing apparatus, and the printed image becomes uneven.
[0005]
It is an object of the present invention to provide a case unit that can reliably inform the user of the ink color of the printing drum stored in the drum case without opening and closing the drum case. Another object of the present invention is to provide a case unit that can suppress the occurrence of unevenness in a printed image due to the storage state by correcting the standing time in consideration of the storage state of the ink.
[0006]
[Means for Solving the Problems]
To achieve the above object, a unit having a drum case for storing a printing drum according to claim 1 comprises an ink color detecting means for detecting an ink color of a printing drum stored in the drum case, and a drum case. And display means for displaying at least the ink color detected by the ink color detection means. According to the first aspect of the present invention, when the printing drum is stored in the drum case, the ink color is detected by the ink color detecting means, and the detected ink color is displayed on the display means.
[0007]
According to a second aspect of the present invention, in the printing drum case unit according to the first aspect, the detecting means for detecting whether or not the stored printing drum is provided with a measuring means for measuring the standing time, and the detecting means When it is detected that the printing drum includes the measuring unit, the printing drum includes a correcting unit that subtracts and corrects the measurement time of the measuring unit. According to the second aspect of the present invention, when the printing drum provided with the measuring means is stored in the drum case, the measurement time by the measuring means is subtracted and corrected by the correcting means, so the measurement measured in the drum case. The time is later than the measurement time measured outside the drum case.
[0008]
A third aspect of the present invention is the printing drum case unit according to the first aspect, characterized in that the printing drum case unit has a connection terminal that is exposed to the outside of the drum case and can exchange data with a connected device. Yes. According to the third aspect of the present invention, various data detected in the drum case and various data from the device connected to the connection terminal are exchanged between the drum case and the device.
[0009]
According to a fourth aspect of the present invention, there is provided the printing drum case unit according to the third aspect, wherein the connection terminals are disposed on the upper and lower surfaces of the drum case, respectively, and the connection between the upper connection terminal and the lower surface is performed when the drum cases are stacked. The terminal is provided so as to be connectable to each other. According to the fourth aspect of the present invention, when the drum cases are stacked, the connection terminals of the cases are connected to allow data communication between the cases.
[0010]
The invention according to claim 5 is the stencil printing apparatus in which the device connected to the connection terminal in the case unit for the printing drum according to claim 3 can select the ink color, and the ink color selected by the stencil printing apparatus It has a control unit that compares the information and the ink color information detected by the ink color detection means, and displays the selected ink color on the display device when they match. According to the invention described in claim 5, when the printing drum of the ink color selected by the stencil printing machine is stored, the selected ink color is displayed on the display means of the drum case storing the drum.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Several embodiments of the present invention will be described. In each embodiment, the same constituent elements are denoted by the same reference numerals as those used in the first embodiment, and redundant description will be omitted.
(First embodiment).
[0012]
The printing drum case unit 1 shown in FIGS. 1 and 2 includes a drum case 2 and a case set base 10 that functions as an interface for setting the drum case 2. The drum case 2 includes a lid 2A and a case main body 2B, and the lid 2A is supported by the hinge 8 shown in FIG. 2 so as to be opened and closed with respect to the case main body 2B. The lid 2A is arranged with the display surface 4A facing the outside of the case, and is provided with a display unit 4 such as a liquid crystal display device and a lamp 3 as display means for displaying at least the ink color. A lock member 7 that holds the lid 2 </ b> A in a closed state is provided on a side surface of the case 2 that faces the hinge 8. In the center of the lid 2A, a handle 6 is provided for hanging the case 2 and holding it.
[0013]
The upper surface 2a of the lid 2A and the lower surface 2b of the main body 2B, which are the upper surface and the lower surface of the drum case 2, are partly exposed to the outside of the case so that data can be exchanged with connected devices. A lid-side connector 5 and a case-side connector 9 are provided as terminals. The case side connector 9 is provided so as to be connectable to a base connector 11 as a connection terminal provided on the case set base 10, and is configured so that data can be communicated with the base connector 11. The lid-side connector 5 and the case-side connector 9 are provided so that the lid-side connector 5 and the case-side connector 9 can be connected to each other when the drum case 2 is laminated.
[0014]
As shown in FIG. 3, the drum case 2 is a case for storing the printing drum 21 in the interior 2C of the case. The printing drum 21 to be stored is supported so as to be rotatable in both forward and reverse directions by a shaft 22 that extends downward from the slide frame 23 and is supported by a pair of side plates 24 arranged in the axial direction of the printing drum 21. The shaft 22 is hollow, and a plurality of ink supply holes (not shown) are formed in the axial direction. One side plate 24 is provided with ink supply means 20. The ink supply means 20 includes an ink pack 26 in which printing ink is stored, an ink pump 27 and a pump motor 28 for extracting ink from the ink pack 26, and an ink flow path for connecting the ink pump 27 and the shaft 22. A tube 29 is provided. One side plate 24 is equipped with a measuring timer 32 as a measuring means for measuring the storage time of the stored printing drum 21.
[0015]
In the interior 2C of the case, a contact switch 33 as detection means for detecting whether or not the stored printing drum 21 includes a measurement timer 32, and ink of the stored printing drum 21 as shown in FIG. An ink color detection sensor 13 as an ink color detection means for detecting a color and a support member 12 that holds the printing drum 21 are provided. As shown in FIG. 3, the support members 12 are for placing the lower ends of the pair of side plates 24, and are arranged one by one in the axial direction of the printing drum 21. The contact switch 33 is provided on the support member 12 on the side plate 24 side to which the measurement timer 32 is attached.
[0016]
As shown in FIGS. 5 and 6, the ink color detection sensor 13 is a button switch having a plurality of push buttons 14, 15, 16, and 17 attached to the inner wall 2D of the case body 2B, and the push button is pressed. And turn on. Although this embodiment has four push buttons, the number of button switches is not limited to four.
[0017]
The side plate 24 facing the inner wall 2D is formed with a plurality of openings 34, 35, 36, and 37 for arbitrarily storing the push buttons 14 to 17 when the printing drum 21 is stored in the case 2. The opening 34 is arranged to accommodate the push button 14, the opening 35 is arranged to accommodate the push button 15, the opening 36 is arranged to accommodate the push button 16, and the opening 37 is arranged to accommodate the push button 17. The push buttons are configured not to be pressed by the outer surface 24a of the side plate 24 in the state of being accommodated in the opening. In this embodiment, the opening 37 corresponding to the push button 17 is not formed. Each opening is formed in the side plate 24 so that its position and number differ depending on the ink color. In this embodiment, the push button 14 is pushed by the side plate of the printing drum having yellow ink, and the push button 15 is pushed by the side plate of the printing drum having magenta ink. The push button 16 is pushed by the side plate of the printing drum having cyan ink, and the push button 17 is pushed by the side plate of the printing drum having black ink. 5 and 6, the printing drum 21 is a printing drum having black ink.
[0018]
As shown in FIGS. 2 and 3, the case set base 10 is provided with a base connector 11, a controller 30 as control means, and a main body connection connector 37. The main part of the controller 30 is composed of a well-known microcomputer. In this embodiment, the controller 3 controls the lamp 3 and the display part 4 based on the data communication performed between the connectors and the detection result of the ink color detection sensor 13. A function to control and correction means for subtracting and correcting the measurement time by the measurement timer 32 when the contact switch 33 detects that the printing drum 21 has the measurement timer 32 are provided. This correction means may be a mathematical expression that subtracts an arbitrary time from the value measured by the measurement timer 32, or may be a data table in which values subtracted in advance for each measurement time are mapped. These mathematical formulas and correction tables are stored in the storage unit of the controller 30. Further, the correction data used for the correction table is obtained from experiments and stored in the storage unit of the controller 30.
[0019]
As shown in FIG. 4, a base connector 11, a main body connection connector 37, and a power source 31 are connected to the controller 30. The case-side connector 9 is connected to the lamp 3, the display unit 4, the lid-side connector 5, and the ink color detection sensor 13. The measurement timer 32 is connected to the case side connector 9 via the contact switch 33. That is, the case set base 10 and the drum case 2 are connected by the base connector 11 and the case side connector 9. When both are connected, the current supplied from the power supply 31 is supplied to the drum case 2 side.
[0020]
Ink color display processing and measurement means correction processing by the printing drum case unit 1 having such a configuration will be described with reference to flowcharts shown in FIGS.
In step 100 of the flowchart shown in FIG. 7, it is determined whether any one of the push buttons 14 to 17 of the ink color detection sensor 13 is pressed and turned on. If the ink color detection sensor 13 is on, the process proceeds to step 101 and the lamp 3 of the drum case 2 is turned on assuming that the printing drum 21 is stored in the drum case 2, and the process proceeds to step 102 to detect the detected ink color. Is displayed on the display unit 4 to finish this process.
[0021]
In step 100, if the ink color detection sensor 13 is not turned on, for example, if the stored printing drum 21 is taken out, the process proceeds to step 103, the lamp 3 of the drum case 2 is turned off, and the process proceeds to step 104. Then, “Drum Pear” is displayed on the display unit 4 and this processing is completed.
[0022]
As described above, when the printing drum 21 is stored in the drum case 2, the lamp 3 is turned on while the ink color of the stored printing drum is displayed on the display unit 4, and the printing drum 21 is not stored. Since the lamp 3 is extinguished and “drumless” is displayed on the display unit 4, the user can be notified of the ink color and the presence or absence of the printing drum 21 without opening and closing the drum case 2 one by one.
[0023]
In step 110 of the flowchart shown in FIG. 8, it is determined whether or not the printing drum 21 housed in the drum case 2 includes a measuring unit, that is, a measuring timer 32. Here, the presence or absence of the measurement timer 32 is determined based on whether or not the contact switch 33 is turned on. When the contact switch 33 is turned on and the printing drum 21 is provided with the measurement timer 32, the process proceeds to step 111, the measurement time of the measurement timer 32 is subtracted and corrected by the correction means, the process is completed, and the measurement timer 32 is provided. If not, the measurement time is not corrected and the process ends.
[0024]
As described above, when the printing drum 21 having the measurement timer 32 is stored in the drum case 2, the measurement time of the measurement timer 32 is subtracted and corrected. It is possible to make a difference in the leaving time.
For this reason, the leaving time corresponding to the storage state of the printing drum 21 can be measured, and the occurrence of unevenness in the printed image due to the storage state can be suppressed.
[0025]
9 and 10 show a form in which the arrangement location of the ink color detection sensor 13 is changed. In FIG. 9, the ink color detection sensor 13 is mounted on the inner wall 2E on the front side of the case body 2B. The push buttons 14 to 17 are provided in a positional relationship facing the ink pack 26 when stored in the drum case 2. The ink pack 26 is optionally provided with a plurality of openings for accommodating the push buttons 14-17.
[0026]
The opening 44 is arranged to accommodate the push button 14, the opening 45 is arranged to accommodate the push button 15, and the opening 46 is arranged to accommodate the push button 16. Each push button is configured not to be pushed by the outer surface 26a of the ink pack 26 in a state of being accommodated in each opening. Each opening is formed in the ink pack 26 so that its position and number differ depending on the ink color. 9 and 10, the printing drum 21 is a printing drum having black ink. As described above, the ink color detection sensor 13 can be provided in various places in the drum case 2.
(Second Embodiment)
In this embodiment, as shown in FIG. 11, a stencil printing apparatus 50 capable of selecting an ink color is connected to a main body connection connector 37 as a connection terminal, and a plurality of drum cases 2 are stacked. In the lowest drum case 2 stacked on the case set base 10, the case side connector 9 is connected to the base connector 11. The drum cases 2 are connected to each other by a lid side connector 5 and a case side connector 9, respectively. A current is supplied to each drum case 2 from a power supply 31 via each connector.
[0027]
The stencil printing apparatus 50 includes a plate making unit 51 for making a master to be wound around a printing drum 21 detachably provided on the apparatus main body 50A, a plate discharging unit 52 for discarding the master after printing, and a mounted printing drum. The apparatus main body 50 </ b> A is provided with a press roller 57 as a printing pressure member that moves toward and away from the lower part 21. The printing drum 21 is mounted at the approximate center of the apparatus main body 50A. The facing portion between the mounted printing drum 21 and the press roller 57 constitutes a printing unit 61 that transfers an image onto the paper 54.
[0028]
On the right side of the apparatus main body 50A, a paper feed table 53 for placing the paper 54 is provided so as to be lifted and lowered. A paper feed roller 55 that feeds the paper 54 toward the printing unit 61 is disposed above the paper 54 placed on the paper feed tray 53. A pair of registration rollers 56 for sending the fed paper 54 to the printing unit 61 at a predetermined timing is disposed between the paper feeding roller 55 and the printing unit 61. On the left side of the apparatus main body 50A, there is disposed a paper discharge table 60 that serves as a paper discharge portion for printing and printing. The paper discharge table 60 is provided with a known end fence 58 and side fence 59.
[0029]
The stencil printing apparatus 50 includes an ink color detection sensor 63 as an ink color detection means for detecting the ink color of the printing drum 21 mounted on the apparatus main body 50A, and a drum attachment / detachment sensor 64 for detecting the presence or absence of the printing drum 21. It is disposed on the main body 50A. A display unit 65 and an ink color selection unit 70 are provided on the upper portion of the apparatus main body 50A. The display unit 65 displays the ink color of the installed printing drum 21, the selected ink color, and various information. Since the ink color detection sensor 63 has the same configuration as the ink color detection sensor 13, detailed description thereof is omitted.
[0030]
A main body side connector 68 serving as a connection terminal to the main body connection connector 37 provided on the case set base 10 is provided at the lower part of one side surface of the apparatus main body 50A. A control device 62 is provided below the device main body 50A. The control device 62 is composed of a well-known microcomputer and has a function of switching the operation of the stencil printing device 50 and the display content displayed on the display device 65 as appropriate.
[0031]
As shown in FIG. 12, the control device 62 includes an ink color detection sensor 63, a drum attachment / detachment sensor 64, a display unit 65, a main body side connector 68, a power supply 67, a device driving unit 69 of the stencil printing apparatus 50, and an ink color selection means. 70 are electrically connected to each other.
[0032]
The case set table 10 compares the ink color information selected on the stencil printing apparatus 50 side, that is, the ink color selected by the ink color selection means 70 with the ink color information detected by the ink color detection sensor 13, and both A controller 300 is provided as a control unit that displays the selected ink color on the display units 4 and 65 when they match. The controller 300 is connected to the base connector 11, the main body connection connector 37, and the power supply 31.
[0033]
The drum identification process in such a configuration will be described with reference to the flowchart of FIG. In step 200 of FIG. 5, a desired ink color is selected by the ink selection means 70, and it is determined whether there is a printing drum corresponding to the ink color selected in step 201. Here, the ink color information detected by the ink color detection sensor 63 and the ink color information selected by the ink color selection means 70 are compared. If they match, the printing drum corresponding to the selected ink color is present in the stencil printing apparatus 50, and the process proceeds to step 202. If they do not match, the printing drum corresponding to the selected ink color is not printed. Since it is not in the printing apparatus 50, the process proceeds to step 203. In step 202, the ink color of the installed printing drum is displayed on the display unit 65, and this process is terminated.
[0034]
In step 203, it is determined whether or not the drum case 2 has a printing drum corresponding to the ink color selected in step 201. Here, the ink color information detected by the ink color detection sensor 13 of each ink case is compared with the ink color information selected by the ink color selection means 70. As a result of the comparison, if the ink color information selected by the ink color selection means 70 matches the ink color information detected by the ink color detection sensor 13, the process proceeds to step 204, and the drum case detecting the matching ink color The second lamp 3 is turned on, the process proceeds to step 205, the ink color of the printing drum stored in the drum case 2 is displayed on the display unit 4, and the process is terminated.
[0035]
In step 203, if the ink color information selected by the ink color selection means 70 does not match the ink color information detected by the ink color detection sensor 13 of each drum case 2, that is, the printing drum corresponding to the drum case is stored. If not, or if it has already been taken out, the routine proceeds to step 206, where the lamp 3 of the drum case 2 without ink color information is turned off, and in step 207, the display 4 of the drum case that does not contain the printing drum is displayed. “Drum pear” is displayed and the process is terminated.
[0036]
In this manner, the selected ink color and the presence or absence of the printing drum are displayed on the drum case in which the printing drum of the ink color selected by the stencil printing apparatus 50 is stored or on the display units 4 and 65 of the stencil printing apparatus 50. Therefore, the user can easily know the location of the printing drum having the desired ink color.
[0037]
In each embodiment, the push button switch is exemplified as the ink color detecting means. However, the invention is not limited to the above-described embodiment as long as the ink color of the printing drum can be detected. May be an optical sensor that detects ink color from its reflectance, or may be a magnetic sensor that provides magnetic information corresponding to the ink color on the printing drum side and reads the magnetic information. .
[0038]
【The invention's effect】
According to the present invention, when the printing drum is stored inside the drum case, the ink color is detected by the ink color detection means, and the detected ink color is displayed on the display means. The ink color of the printing drum can be reliably notified to the user without opening and closing the drum case.
[0039]
According to the present invention, when the printing drum provided with the measuring means is stored in the drum case, the measuring time by the measuring means is subtracted and corrected by the correcting means, so that the measuring time measured in the drum case is Since it becomes later than the measurement time measured outside the case, the leaving time is corrected in consideration of the storage state of the ink, and the occurrence of unevenness of the printed image due to the storage state can be suppressed.
[0040]
When there is a connection terminal that is exposed to the outside of the drum case and can exchange data with the connected device, various data detected in the drum case and various devices from the device connected to the connection terminal Data communication is performed between the drum case and the device, and various information can be surely notified to the user without opening and closing the drum case.
[0041]
When the connection terminals are arranged on the upper and lower surfaces of the drum case and the drum cases are stacked, the connection terminals on the upper surface and the connection terminals on the lower surface are provided to be connectable. Since the connection terminals are connected and data communication between cases can be performed, the ink color etc. can be displayed on the display means of each case, and the ink color of the printing drum stored in the drum case can be opened and closed. It is possible to notify the user more reliably without doing.
[0042]
The equipment connected to the connection terminal is a stencil printer that can select ink color. The ink color information selected by this stencil printer and the ink color information detected by the ink color detection means are compared, and they match. In the case of having a control unit that displays the selected ink color on the display device, if the printing drum of the ink color selected by the stencil printing device is stored, the drum case storing the drum is stored. Since the selected ink color is displayed on the display means, the user can be surely notified of the ink color of the printing drum stored in the drum case without opening and closing the drum case.
[Brief description of the drawings]
FIG. 1 is a perspective view of a case unit for a printing drum showing a first embodiment.
FIG. 2 is a front view of a case unit for a printing drum.
FIG. 3 is a cross-sectional view showing an open state of a drum case and a storage state of a printing drum.
FIG. 4 is a block diagram showing a connection state of electrical components in the first embodiment.
FIG. 5 is an enlarged cross-sectional view showing a configuration example of ink color detection means.
FIG. 6 is an enlarged cross-sectional view showing an ink color detection state by an ink color detection means.
7 is a flowchart showing an example of an ink color display process shown in FIG.
FIG. 8 is a flowchart illustrating an example of a measurement unit correction process.
FIG. 9 is an enlarged cross-sectional view showing another configuration example of the ink color detection means.
10 is an enlarged cross-sectional view showing an ink color detection state by the ink color detection means shown in FIG. 9. FIG.
FIG. 11 is a schematic configuration diagram illustrating a connection state between a printing drum case unit and a stencil printing apparatus according to a second embodiment.
FIG. 12 is a block diagram mainly showing a connection state of electrical components of the stencil printing apparatus.
FIG. 13 is a flowchart illustrating an example of drum identification processing.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case unit 2 Drum case 2a Drum case upper surface 2b Drum case lower surface 2C Drum case inside 4 Display means 4A Display surface 5 Connection terminal (upper connection terminal)
9 Connection terminal (Connection terminal on the bottom)
13 Ink color detection means 21 Printing drum 32 Measuring means 33 Detection means 50 Stencil printing apparatus 300 Control unit

Claims (5)

A unit having a drum case for storing a printing drum,
Ink color detection means for detecting the ink color of the printing drum stored in the drum case;
A case unit for a printing drum, comprising a display unit that is arranged with a display surface facing the outside of the drum case and displays at least the ink color detected by the ink color detection unit. In the case unit for printing drums of Claim 1,
Detecting means for detecting whether the printing drum to be stored has a measuring means for measuring the standing time;
A printing drum case unit, comprising: a correcting unit that subtracts and corrects a measurement time of the measuring unit when the detecting unit detects that the printing drum includes the measuring unit. In the case unit for printing drums of Claim 1,
A case unit for a printing drum having a connection terminal that is exposed to the outside of the drum case and can exchange data with a connected device. The printing drum case unit according to claim 3,
The connection terminals are arranged on the upper and lower surfaces of the drum case, respectively, and when the drum cases are stacked, the connection terminals on the upper surface and the connection terminals on the lower surface are provided so as to be connectable. The printing drum case unit according to claim 3,
The device connected to the connection terminal is a stencil printing apparatus capable of selecting an ink color, and compares the ink color information selected by the stencil printing apparatus with the ink color information detected by the ink color detection means, A case unit for a printing drum having a control unit that displays the selected ink color on the display device when the two match.

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