JP2005007893A - Terminal of circuit board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal layout configuration of a circuit board for enabling an accurate detection of the connection of the terminals on the circuit board. <P>SOLUTION: The circuit board 10 has an approximately rectangular outer shape, and an approximately circular test terminal 20 is provided on the upper half part of a counter surface 13. A plurality of terminals 21 to 27 each of which having an approximately rectangular shape are provided in two rows, i.e., an upper row and a lower row, on the lower half part of the counter surface 13 of the circuit board 10. In the upper row, an I/O terminal 21 for data input/output, a power supply terminal 22 for supplying power, and a chip select terminal 23 for inputting a chip select signal CS are disposed. In the lower row on the counter surface 13 of the circuit board 10, a ground terminal 24, a read/write terminal 25 for inputting a read/write control signal W/R, a clock terminal 26 for inputting a clock signal CLK, and a ground terminal 27 are provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a circuit board provided in a printing recording material container that contains a printing recording material.

  In recent years, an ink cartridge including a circuit board having a storage device that stores information about ink in the ink cartridge has been put into practical use. The circuit board is provided with a terminal for receiving power supply, stored information, etc. from the printer or sending stored information to the printer.

  A conventional terminal arrangement structure will be described with reference to FIG. The circuit board 500 has a ground terminal 510 as a center, a first terminal array in which a data input / output terminal 520 is arranged on one side and a read / write signal terminal 530 is arranged on the other side, and a first terminal array In addition to being located in the upper stage, a power supply terminal 540 is provided as a center, and a second terminal row in which a clock signal terminal 550 is disposed on one side and a chip select signal terminal 560 is disposed on the other side.

  The printer 580 is provided with contact pins 570 corresponding to the terminals 510 to 560, respectively. When the ink cartridge is mounted on the mounting portion of the printer, the terminals 510 to 560 and the contact pins 570 are mutually connected. The circuit board 500 and the printer 580 can exchange power and data. The ground terminal 510 is used by the printer 580 to determine whether or not the ink cartridge is correctly installed. By detecting contact (conduction) between the ground terminal pin of the printer 580 and the ground terminal 510, the ground terminal 510 is used. Installation of the ink cartridge is detected.

International Publication No. WO99 / 59823

  However, conventionally, even when the other terminals 520 to 560 and the contact pin 570 are not in contact with each other due to the displacement of the circuit board 500, the continuity is detected and it is determined that the ink cartridge is mounted. there were. In such a case, there is a problem that the data stored in the storage device cannot be read / written even though it is determined that the ink cartridge is mounted.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a circuit board terminal arrangement structure capable of accurately detecting contact with terminals on the circuit board. It is another object of the present invention to provide a printing recording material container capable of accurately detecting whether or not the printing recording material container is mounted.

  In order to solve the above problems, a first aspect of the present invention provides a circuit board including a storage device that stores information relating to a printing recording material. The circuit board according to the first aspect of the present invention includes two or more ground terminals arranged at both ends in one direction on the circuit board, the circuit board, and the printing board. A plurality of terminals used for writing and reading information relating to the recording material, including a plurality of terminals including a power supply terminal and a control signal terminal, and the two or more ground terminals are not closest to the power supply terminal It is characterized by that.

  The circuit board according to the first aspect of the present invention includes two or more ground terminals arranged at both ends in one direction on the circuit board, so that contact with the terminals on the circuit board is accurately detected. In addition, a short circuit between the power supply terminal and the ground terminal can be prevented.

  In the circuit board according to the first aspect of the present invention, the plurality of terminals and the ground terminals are arranged in the same column, and two of the two or more ground terminals are the most in the row. You may arrange | position at an outer end, respectively. Even when such a configuration is provided, contact with the terminals on the circuit board can be accurately detected.

  In the circuit board according to the first aspect of the present invention, the plurality of terminals are arranged to form a plurality of rows, and two of the two or more ground terminals are two of the plurality of rows. You may each arrange | position at the outermost end of one row | line | column inside. The plurality of terminals may include a clock signal terminal, and the clock signal terminal may be sandwiched between two ground terminals among the two or more ground terminals. When such a configuration is provided, the clock signal can be stabilized. Further, the plurality of terminals may include power supply terminals, and two of the two or more ground terminals may be arranged at outermost ends of columns different from the column including the power supply terminals. When such a configuration is provided, a short circuit between the power supply terminal and the ground terminal can be prevented.

In the circuit board according to the first aspect of the present invention, the plurality of terminals include a data input / output terminal, a power supply terminal, a selection signal terminal, a read / write control signal terminal, and a clock signal terminal,
The plurality of columns are:
A first column in which the data input / output terminal and the selection signal terminal are respectively disposed on both sides of the power supply terminal;
A second column in which the read / write control signal terminal and the clock signal terminal are respectively disposed between the two ground terminals;
The first row is disposed closer to the center of the circuit board than the second row,
The terminals arranged in the first row and the terminals arranged in the second row may be alternately arranged. When such a configuration is provided, it is possible to prevent a short circuit between the terminals and to prevent unnecessary contact with each terminal.

  In the circuit board according to the first aspect of the present invention, the plurality of terminals may be arranged in the row forming direction at intervals of about 1 mm.

  According to a third aspect of the present invention, there is provided a print recording material container used by being mounted on a printing apparatus. A print recording material container according to a third aspect of the present invention is a circuit board having a storage chamber for storing a print recording material and a storage device for storing information related to the print recording material stored in the storage chamber. A circuit board having a plurality of terminals arranged in one direction on the circuit board and two or more ground terminals arranged at both ends in the one direction on the circuit board, The two or more ground terminals are not closest to the power supply terminal.

  The printing recording material container according to the third aspect of the present invention has two or more ground terminals disposed at both ends in one direction, and two or more ground terminals that are not closest to the power supply terminal. Since the circuit board is provided, it is possible to accurately detect whether or not the printing recording material container is mounted, and to prevent a short circuit between the power supply terminal and the ground terminal.

  In the printing recording material container according to the third aspect of the present invention, the plurality of terminals include a power supply terminal, a control signal terminal, and a clock signal terminal. Of the two or more ground terminals, two ground terminals are The power supply terminal may be different from the line including the power supply terminal and may be disposed at the outermost end of the same line as the clock signal terminal. When such a configuration is provided, the clock signal can be stabilized and a short circuit between the ground terminal and the power supply terminal can be prevented.

In the printing recording material container according to the third aspect of the present invention, the plurality of terminals include a data input / output terminal, a power supply terminal, a selection signal terminal, a read / write control signal terminal, and a clock signal terminal,
The plurality of columns are:
A first column in which the data input / output terminal and the selection signal terminal are respectively disposed on both sides of the power supply terminal;
A second column in which the read / write control signal terminal and the clock signal terminal are respectively disposed between the two ground terminals;
The first row is disposed closer to the center of the circuit board than the second row,
The terminals arranged in the first row and the terminals arranged in the second row may be alternately arranged. When such a configuration is provided, it is possible to prevent a short circuit between the terminals and to prevent unnecessary contact with each terminal.

  In the printing recording material container according to the third aspect of the present invention, the plurality of terminals may be arranged in the row forming direction at intervals of about 1 mm. In the case of having such a configuration, an incorrect mounting of the printing recording material container tends to cause a contact failure of each terminal on the circuit board, but the ground terminal arranged at both ends or the outermost end on the circuit board. Thus, it is possible to appropriately detect contact failure of each terminal on the circuit board.

  In the printing recording material container according to the third aspect of the present invention, the printing recording material container may be an ink cartridge or a toner cartridge. In either case, it is required to accurately detect the mounting of the cartridge.

  Hereinafter, terminals of a circuit board according to the present invention will be described based on examples in the following order with reference to the drawings.

A. Configuration example of terminal of circuit board according to first embodiment C. Circuit configuration example of circuit board according to first embodiment Example of configuration of ink cartridge provided with circuit board according to first embodiment. Other examples

A. Configuration Example of Terminals of Circuit Board According to First Embodiment A configuration of terminals of the circuit board according to the first embodiment will be described with reference to FIGS. FIG. 1 is an explanatory diagram illustrating a configuration example of terminals of a circuit board according to the first embodiment. FIG. 2 is a side view of the circuit board shown in FIG. FIG. 3 is an explanatory view schematically showing the contact state between the terminals of the circuit board and the contact pins on the printer side according to the first embodiment.

  The circuit board 10 has a substantially rectangular outer shape, and includes a positioning through-hole 11 when mounted on the ink cartridge, and a positioning notch 12 formed at a part of the outer periphery when mounting the ink cartridge. I have. The circuit board 10 includes a plurality of terminals 20 to 27 on a surface 13 facing the printer, and a storage device 30 connected to the terminals 20 to 27 on a bonding surface 14 to the ink cartridge (see FIG. 2). ).

  The upper half of the facing surface 13 of the circuit board 10 is provided with a substantially circular test terminal 20 used when testing the storage device 30 at the time of factory shipment, and the lower half is arranged in two rows vertically. A plurality of substantially rectangular terminals 21 to 27 are provided. The terminals arranged in the upper row are the I / O terminal 21 for data input / output, the power supply terminal 22 for power supply, and the chip select signal (for selectively activating the storage device 30) from the left side in FIG. A chip select terminal 23 for inputting a selection signal CS. The terminals arranged in the lower row are the ground terminal 24 from the left side in FIG. 1, the read / write terminal 25 for inputting the read / write control signal W / R to the storage device 30, and the storage device 30. A clock terminal 26 for inputting a clock signal CLK (synchronization signal), and a ground terminal 27.

  As is apparent from FIG. 1, the circuit board 10 according to the present embodiment includes the ground terminals 24 and 27 at both ends of the lower row of the two terminal rows, and the other inside the ground terminals 24 and 27. Terminals 21 to 23, 25, and 26 are provided. The clock terminal 26 is disposed between the ground terminals 24 and 27. Further, the ground terminals 24 and 27 are arranged in a different row from the power supply terminal 22 and have a positional relationship in which the distance between the terminal side of the power supply terminal 22 and the terminal side does not take the closest distance. That is, the ground terminals 24 and 27 are not closest terminals to the power supply terminal 22. In addition, the ground in this embodiment means a reference voltage for signals, and it is assumed that the voltage is positive or negative.

  In this embodiment, the circuit board 10 has dimensions of a height of 11.9 mm, a width of 7.5 mm, and a thickness of 0.71 mm. Each of the terminals 21 to 27 has a height of 1.8 mm and a width of 1.0 mm. However, each dimension value is only an example, and for example, there may be a difference of about ± 0.5 mm. The interval between adjacent terminals, for example, the interval between the I / O terminal 21 and the power supply terminal 22 is, for example, about 1 mm. There may also be a difference of about ± 0.5 mm, for example, between the terminals.

  The contact state between the circuit board 10 according to the present embodiment and the contact pins on the printer will be described with reference to FIG. On the printer side, contact pins P1 to P7 are provided corresponding to the terminals 21 to 27, respectively. When the ink cartridge is mounted on the mounting portion of the printer, the terminals and the contact pins P1 to P7 are arranged. Contacting each other, power is supplied from the printer to the storage device 30 of the circuit board 10, and data can be exchanged between the printer and the storage device 30.

  The ground terminals 24 and 27 are used by the printer to determine whether or not the ink cartridge is correctly installed. The printer has two ground terminal contact pins P4 and P7 on the printer side. 24 and 27 are in contact with each other, and detection of continuity detects the mounting of the ink cartridge.

  The circuit board 10 according to the present embodiment is most susceptible to vertical and horizontal inclination and displacement with respect to the arrangement direction of the terminals, and the ground terminals 24 and 27 are provided at both ends where contact between the terminals and the contact pins is likely to occur. I have. Therefore, when the printer detects contact between the ground terminals 24 and 27 and the ground terminal contact pins P4 and P7, the other terminals 21 to 23, 25 and 26 and the other contact pins P1 to P3, P5 and P6. The possibility that they are not in contact with each other is extremely low, and it is possible to avoid a situation in which the storage device 30 cannot be accessed even though the mounting of the ink cartridge is detected.

  Further, since the ground terminals 24 and 27 are not closest to the power supply terminal 22, a short circuit between the power supply terminal 22 and the ground terminals 24 and 27 can be prevented.

B. Circuit Configuration Example of Circuit Board According to First Embodiment Next, an example of a circuit configuration of the circuit board according to the first embodiment will be described with reference to FIG. FIG. 4 is a block diagram schematically showing the circuit configuration of the circuit board according to the first embodiment.

  As described above, the circuit board 10 includes the storage device 30 on the joint surface 13 with the ink cartridge. The storage device 30 according to this embodiment includes a memory cell 31 that is serially accessed, a read / write control unit 32 that controls reading and writing of data with respect to the memory cell 31, and a read / write control in synchronization with the clock signal CLK. The EEPROM includes an address counter 33 that counts up when reading and writing data between the printer 100 and the memory cell 31 via the unit 32.

  The contact pin P1 of the printer 100 is used for inputting / outputting data to / from the printer 10, and the contact pin P2 is used for supplying the power supply voltage VDD from the printer 100 to the power supply terminal 22 of the circuit board 10. The contact pin P3 is used for sending a chip select signal CS, the contact pins P4 and P7 are used for supplying a pull-up voltage VCC, and the contact pin P5 is used for sending a read / write control signal. Used, the contact pin P6 is used to send out the clock signal CLK.

  The contact pin P4 is connected to the cartridge out detection terminal of the central processing unit (CPU) 60 inside the printer 100, and is connected to the cartridge out detection power source VCC via a pull-up resistor, and the potential of the cartridge out voltage VCC is obtained. Have The contact pin P7 is grounded inside the printer 100 and has a ground voltage VSS.

C. Configuration Example of Ink Cartridge Comprising Circuit Board According to First Embodiment A configuration example of an ink cartridge to which the circuit board 10 according to the first embodiment is mounted will be described with reference to FIGS. FIG. 5 is a perspective view showing the overall configuration of the ink cartridge to which the circuit board 10 according to the first embodiment is mounted. FIG. 6 is an enlarged view showing the mounting portion of the circuit board 10 in FIG. 4 in an enlarged manner. FIG. 7 is an explanatory diagram showing a state when the ink cartridge is mounted on the printer.

  The ink cartridge 40 has a form for mounting on a so-called off-carriage type printer that does not include an ink cartridge on the carriage. An off-carriage type printer is generally a large printer, and an ink cartridge used for such a large printer is larger than an ink cartridge used for an on-carriage type printer.

  The ink cartridge 40 includes a circuit board mounting portion 41 for mounting the circuit board 10, an ink supply port 42 for supplying ink in the ink cartridge 40 to the printer, and an ink cartridge for smooth ink supply. An air supply port 43 for sending air into the printer 40 and a guide portion 44 for mounting on the printer are provided. The ink cartridge 40 has an outer dimension in which the length of the side (depth direction) perpendicular to the side (width direction) where the guide portion 44 and the like are formed is longer than the width direction. When the relationship between the ink cartridge 40, the depth dimension, and the width dimension of the circuit board 10 is expressed by a ratio of the two, for example, the ratio is 15: 1 or more.

  As shown in FIG. 5, the circuit board 10 is positioned in the through hole 11 and the notch 12 and is fixed to the circuit board mounting portion 41 of the ink cartridge 40.

  When the ink cartridge 40 is mounted on the printer, the guide portion 44 of the ink cartridge 40 guides the guide pin 101 on the printer side, the circuit board mounting portion 41, the ink supply port 42, the air supply port 43, the printer The contact pin 102 on the side, the ink supply port 103, and the air supply port 104 are appropriately contacted and joined.

  A process executed by the printer 100 on the circuit board 10 when the ink cartridge 40 is mounted on the printer 100 will be described with reference to FIG.

  The contact pin P7 of the printer 100 is grounded inside the printer, and the contact pin P4 is connected to the cartridge out detection terminal of the CPU 60. When the ink cartridge 40 is mounted on the printer 100, the contact pins P1 to P7 of the printer 100 and the terminals 21 to 27 of the circuit board 10 come into contact with each other. At this time, if the contact pins P4 and P7 of the printer 100 are in contact with the ground terminals 24 and 27 of the circuit board 10, the CPU 60 detects the ground voltage VSS. That is, the printer 100 (CPU 60) detects that the ink cartridge 40 is mounted, detects conduction between the contact pins P4 and P7 and the ground terminals 24 and 27 of the circuit board 10, and determines that the ink cartridge 40 is correctly mounted. .

  On the other hand, when any of the contact pins P4 and P7 of the printer 100 is not in contact with the ground terminals 24 and 27 of the circuit board 10, the CPU 60 detects the cartridge out voltage VCC. That is, the printer 100 cannot detect conduction between the contact pins P4 and P7 and the ground terminals 24 and 27 of the circuit board 10, and determines that the ink cartridge 40 is not correctly mounted.

  When the printer 100 detects the continuity between the contact pins P4 and P7 and the ground terminals 24 and 27 of the circuit board 10 and determines that the ink cartridge 40 is correctly installed, the printer 100 supplies the power VDD to the power terminal 22. The chip select signal CS is transmitted to the storage device 30 that is desired to be accessed.

  The storage device 30 that has received the chip select signal CS becomes active and waits for a control signal of the printer 100. For example, when reading data stored in the storage device 30, the printer 100 inputs a clock signal CLK corresponding to a desired address on the memory cell 31 to the clock terminal 26, and at the same time, reads A write control signal W / R is input to the read / write terminal 25.

  The clock signal CLK input to the clock terminal 26 is input to the address counter 33. The address counter 33 counts up the address in synchronization with the input clock signal CLK, and designates the address on the memory cell 31. The read / write control signal W / R input via the read / write terminal 25 is input to the read / write control unit 32 and analyzed. The read / write control unit 32 reads data from the address of the memory cell 31 specified by the address counter 33 according to the analyzed read command, and sends the read data to the printer 100 via the I / O terminal 21. .

  As described above, the circuit board 10 according to the first embodiment includes the ground terminals 24 and 27 at both ends where the contact between the terminal and the contact pin is likely to occur. The other terminals 21 to 23, 25 and 26 are not in contact with the other contact pins P1 to P3, P5 and P6 even though the contact pins P4 and P7 for the ground terminal are in contact with each other. Can be reduced or eliminated. As a result, it is possible to accurately detect the mounting of the ink cartridge. In addition, it is possible to avoid a situation in which the storage device 30 cannot be accessed even though the mounting of the ink cartridge is detected.

  In general, as in this embodiment, when the ratio between the width dimension of the circuit board 10 and the depth dimension of the ink cartridge 40 is large, a slight displacement of the ink cartridge may cause a terminal on the circuit board. It tends to appear as a large deviation between the contact pin and the contact pin, and a situation where any of the terminals is not in contact with the contact pin is likely to occur. However, by using the circuit board 10 according to the present embodiment, even when the external dimensions of the circuit board and the ink cartridge are greatly different, it is possible to accurately detect the mounting of the ink cartridge.

  Furthermore, since the ground terminals 24 and 27 are not the closest terminals to the power supply terminal 22, a short circuit between the power supply terminal 22 and the ground terminals 24 and 27 can be prevented. Further, since the clock terminal 26 is sandwiched between the ground terminals 24 and 27, the clock signal CLK can be stabilized.

D. Other Embodiments Other embodiments will be described with reference to FIGS. FIG. 8 is an explanatory diagram showing a configuration example of the terminals of the circuit board according to the second embodiment. FIG. 9 is an explanatory diagram showing a configuration example of the terminals of the circuit board according to the third embodiment. FIG. 10 is an explanatory diagram showing a configuration example of the terminals of the circuit board according to the fourth embodiment. The circuit boards according to the second to fourth embodiments have the same configuration as that of the circuit board 10 according to the first embodiment except for the terminal arrangement. The same reference numerals as those used in the examples are attached and the description thereof is omitted.

  A second embodiment will be described with reference to FIG. The circuit board 200 according to the second embodiment is provided with a substantially circular test terminal 20 used for testing the storage device 30 at the time of factory shipment in the upper half of the facing surface 13 and arranged in two upper and lower stages. A plurality of substantially rectangular terminals 201 to 207 are provided in the lower half of the facing surface 13. Among the plurality of rectangular terminals, terminals arranged in the upper stage are for selectively activating the data input / output I / O terminal 201, the power supply power supply terminal 202, and the storage device 30 from the left side in the figure. This is a chip select terminal 203 for inputting the chip select signal. The terminals arranged in the lower stage are a ground terminal 204 from the left side in the drawing, a read / write terminal 205 for inputting a read / write control signal to the storage device 30, and a clock signal (synchronization signal) for the storage device 30. Are a clock terminal 206 and a ground terminal 207.

  As is apparent from FIG. 8, the circuit board 200 according to this embodiment includes ground terminals 204 and 207 at both ends thereof. The I / O terminal 201 and the chip select terminal 203 for data input / output are formed wider than the I / O terminal 21 and the chip select terminal 23 in the first embodiment, but the ground terminals 204 and 207 are circuits. The other terminals 202, 205, and 206 are disposed at both ends of the substrate 200, and the other terminals 202, 205, and 206 are provided inside the ground terminals 204 and 207. The clock terminal 206 is disposed between the ground terminals 204 and 207. Further, the ground terminals 204 and 207 are arranged in a different column from the power supply terminal 202 and are not closest to the power supply terminal 202.

  Therefore, by using the circuit board 200 according to the second embodiment, it is possible to accurately detect the mounting of the ink cartridge. In addition, it is possible to avoid a situation in which the storage device 30 cannot be accessed even though the mounting of the ink cartridge is detected. Further, the clock signal CLK can be stabilized and a short circuit between the power supply terminal 202 and the ground terminals 204 and 207 can be prevented.

  A third embodiment will be described with reference to FIG. The circuit board 300 according to the third embodiment includes a plurality of test terminals 20 having a substantially circular shape that are used when testing the storage device 30 at the time of shipment from the factory in the upper half of the opposing surface 13 and are randomly arranged. Round terminals 301 to 306 are provided in the lower half of the facing surface 13. The circular terminal inputs a clock signal (synchronization signal) to the ground terminal 301, the read / write terminal 302 for inputting a read / write control signal to the storage device 30, and the storage device 30 from the left in the drawing. Clock terminal 303, power supply terminal 304 for power supply, I / O terminal 305 for data input / output, and ground terminal 306.

  As is clear from FIG. 9, the circuit board 300 according to the present embodiment includes ground terminals 301 and 306 at both ends thereof, and the other terminals 302 to 305 are disposed inside the ground terminals 301 and 306. ing. Further, the ground terminals 301 and 306 are not closest terminals to the power supply terminal 304.

  Therefore, by using the circuit board 300 according to the third embodiment, it is possible to accurately detect the mounting of the ink cartridge. In addition, it is possible to avoid a situation in which the storage device 30 cannot be accessed even though the mounting of the ink cartridge is detected. Furthermore, a short circuit between the power supply terminal 304 and the ground terminals 301 and 306 can be prevented.

  A fourth embodiment will be described with reference to FIG. The circuit board 400 according to the fourth embodiment is provided with a substantially circular test terminal 20 used for testing the storage device 30 at the time of factory shipment in the upper half of the opposing surface 13 and is arranged in a line. A plurality of rectangular terminals 401 to 407 are provided in the lower half of the facing surface 13. The substantially rectangular terminal includes a ground terminal 401 from the left in the drawing, a read / write terminal 402 for inputting a read / write control signal to the storage device 30, and a clock signal (synchronization signal) for the storage device 30. A clock terminal 403 for input, a power supply terminal 404 for power supply, an I / O terminal 405 for data input / output, a chip select terminal 306 for inputting a chip select signal, and a ground terminal 307.

  As is clear from FIG. 10, the circuit board 400 according to the present embodiment includes the ground terminals 401 and 407 at the outermost end, and the other terminals 402 to 406 are provided inside the ground terminals 401 and 407. It has been. Further, the ground terminals 401 and 407 are not closest terminals to the power supply terminal 404.

  Therefore, by using the circuit board 400 according to the fourth embodiment, it is possible to accurately detect the mounting of the ink cartridge. In addition, it is possible to avoid a situation in which the storage device 30 cannot be accessed even though the mounting of the ink cartridge is detected. Furthermore, a short circuit between the power supply terminal 404 and the ground terminals 401 and 407 can be prevented.

  As described above, the circuit board according to the present invention has been described based on some examples. However, the embodiments of the present invention described above are intended to facilitate understanding of the present invention and limit the present invention. is not. The present invention can be changed and improved without departing from the spirit and scope of the claims, and it is needless to say that the present invention includes equivalents thereof.

  For example, in the first embodiment, the case where the circuit board 10 is mounted on the ink cartridge 40 used for the off-carriage type printer has been described. However, as shown in FIG. The ink cartridge 48 may be mounted. Even in such a case, by using the circuit boards 10, 200, 300, and 400 according to the first to fourth embodiments, it is possible to accurately detect whether or not the ink cartridge is mounted and to mount the ink cartridge. In spite of the detection, it is possible to avoid a situation where the storage device 30 cannot be accessed.

  In addition, the arrangement of the terminals in each of the above embodiments is merely an example, and it is sufficient that the ground terminals are arranged at both ends of the circuit board. Alternatively, when the terminals are arranged in a plurality of stages, the terminals may be arranged at the outermost end in one of the terminals. This is because the effects of the present invention can be obtained as long as such a configuration is provided.

  In the first embodiment, the circuit board 10 is mounted on the ink cartridge 40. However, the circuit board 10 may be mounted on the toner cartridge. This is because when the toner cartridge is mounted, a problem similar to that at the time of mounting the ink cartridge occurs, and this problem is solved by using the circuit board 10.

  In the first embodiment, 15: 1 is used as an exemplary value of the ratio of the depth dimension of the ink cartridge 40 and the width dimension of the circuit board 10, but the ratio of the dimension values is not limited to this. For example, an example value of 10: 1 to 30: 1 may be used. In any case, when the ratio of the depth dimension of the ink cartridge 40 to the width dimension of the circuit board 10 is so large that an appropriate contact with the circuit board 10 cannot be realized by improper mounting of the ink cartridge 40, This is because the effects of the present invention can be obtained.

It is explanatory drawing which shows the structural example of the terminal of the circuit board which concerns on a 1st Example. It is a side view of the circuit board shown in FIG. It is explanatory drawing which shows typically the contact state of the terminal of the circuit board concerning a 1st Example, and the contact pin by the side of a printer. 1 is a block diagram schematically showing a circuit configuration of a circuit board according to a first embodiment. 1 is a perspective view showing an overall configuration of an ink cartridge to which a circuit board 10 according to a first embodiment is mounted. It is an enlarged view which expands and shows the mounting part of the circuit board 10 in FIG. FIG. 6 is an explanatory diagram illustrating a state when the ink cartridge is mounted on a printer mounting unit. It is explanatory drawing which shows the structural example of the terminal of the circuit board which concerns on a 2nd Example. It is explanatory drawing which shows the structural example of the terminal of the circuit board which concerns on a 3rd Example. It is explanatory drawing which shows the structural example of the terminal of the circuit board which concerns on a 4th Example. 1 is a perspective view illustrating an overall configuration of an on-carriage type ink cartridge to which a circuit board 10 according to a first embodiment is mounted. It is explanatory drawing which shows the arrangement configuration of the terminal of the conventional circuit board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Circuit board 11 ... Through-hole 12 ... Notch 13 ... Opposite surface 14 ... Joining surface 20 ... Test terminal 21 ... I / O terminal 22 ... Power supply terminal 23 ... Chip select terminal 24, 27 ... Grounding terminal 25 ... Lead Write terminal 26 ... Clock terminal 30 ... Memory device 31 ... Memory cell 32 ... Read / write control unit 33 ... Address counter 40 ... Ink cartridge 41 ... Circuit board mounting part 42 ... Ink supply port 43 ... Air supply port 44 ... Guide unit 48 …ink cartridge)
DESCRIPTION OF SYMBOLS 100 ... Printer 101 ... Guide pin 102 ... Contact pin 103 ... Ink supply port 104 ... Air supply port 200 ... Circuit board 201 ... I / O terminal 202 ... Power supply terminal 203 ... Chip select terminal 204, 207 ... Grounding terminal 205 ... Lead Write terminal 206 ... Clock terminal 300 ... Circuit board 301, 306 ... Ground terminal 302 ... Read / write terminal 303 ... Clock terminal 304 ... Power supply terminal 305 ... I / O terminal 400 ... Circuit board 401, 407 ... Ground terminal 402 ... Read / write terminal Write terminal 403 ... Clock terminal 404 ... Power supply terminal 405 ... I / O terminal 406 ... Chip select terminal P1-P7 ... Contact pin EP ... External power supply

Claims (14)

A circuit board comprising a storage device for storing information relating to a printing recording material,
Two or more ground terminals disposed at both ends in one direction on the circuit board;
A plurality of terminals disposed on the circuit board and used for writing and reading information on the recording material for printing, and including a plurality of terminals including a power supply terminal and a control signal terminal;
The circuit board according to claim 1, wherein the two or more ground terminals are not closest to the power supply terminal. The circuit board according to claim 1,
The plurality of terminals are arranged to form a plurality of rows;
Of the two or more ground terminals, two ground terminals are respectively disposed at outermost ends of one of the plurality of rows. The circuit board according to claim 2,
The plurality of terminals include a power supply terminal,
Of the two or more ground terminals, two ground terminals are respectively disposed at outermost ends of a row different from the row including the power supply terminals. The circuit board according to any one of claims 1 to 3,
The circuit board, wherein the plurality of terminals are arranged in the row forming direction at intervals of about 1 mm. A printing recording material container used by being mounted on a printing apparatus,
A storage chamber for storing the printing recording material;
A circuit board having a storage device for storing information relating to the printing recording material accommodated in the accommodation chamber, wherein a plurality of terminals arranged in one direction on the circuit board and one on the circuit board A circuit board having two or more ground terminals disposed at both ends in the direction of
The printing recording material container, wherein the two or more ground terminals are not closest terminals to the power supply terminal. In the printing recording material container according to claim 5,
The plurality of terminals are arranged to form a plurality of rows;
Of the two or more ground terminals, two ground terminals are respectively disposed at outermost ends of one of the plurality of rows. In the printing recording material container according to any one of claims 5 and 6,
The printing recording material container, wherein the plurality of terminals are arranged in the row forming direction at intervals of about 1 mm. In the printing recording material container according to any one of claims 5 to 7,
The print recording material container is an ink cartridge. In the printing recording material container according to any one of claims 5 to 8,
The printing recording material container is a toner cartridge. The printing recording material container according to any one of claims 5 to 9, further comprising:
A connection end surface having two edges and connected to the printing apparatus, the connection end surface having a printing recording material supply port in the center;
The circuit board is a printing / recording material container disposed at any edge of the connection end face. A circuit board comprising a storage device for storing information relating to a printing recording material,
Two or more ground terminals disposed at both ends in one direction on the circuit board;
A plurality of terminals including at least a power supply terminal, which are disposed on the circuit board and used for writing and reading information on the printing recording material,
The two or more ground terminals and the plurality of terminals are arranged to form a plurality of rows,
The power supply terminal is a circuit board arranged at the center of a column different from the column where the ground terminal is arranged. A circuit board comprising a storage device for storing information relating to a printing recording material,
Two or more ground terminals disposed at both ends in one direction on the circuit board;
A plurality of terminals including at least a power supply terminal, which are disposed on the circuit board and used for writing and reading information on the printing recording material,
The two or more ground terminals and the plurality of terminals are arranged to form a plurality of rows,
Of the plurality of rows, the row including the ground terminal is a circuit board including the most terminals. A printing recording material container used by being mounted on a printing apparatus,
A storage chamber for storing the printing recording material;
A circuit board having a storage device for storing information relating to the printing recording material accommodated in the accommodation chamber, wherein a plurality of terminals arranged in one direction on the circuit board and one on the circuit board A circuit board having two or more ground terminals disposed at both ends in the direction of
The plurality of terminals include at least a power supply terminal and are arranged to form a plurality of rows,
The power supply terminal is a printing recording material container disposed in the center of the plurality of rows not including the ground terminal. A printing recording material container used by being mounted on a printing apparatus,
A storage chamber for storing the printing recording material;
A circuit board having a storage device for storing information relating to the printing recording material accommodated in the accommodation chamber, wherein a plurality of terminals arranged in one direction on the circuit board and one on the circuit board A circuit board having two or more ground terminals disposed at both ends in the direction of
The plurality of terminals include at least a power supply terminal and are arranged to form a plurality of rows,
Among the plurality of rows, the row including the ground terminal is a printing recording material container including the largest number of terminals.

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