CN102169362A - Print server for taking electricity through printer parallel port and electricity-taking method thereof - Google Patents
Print server for taking electricity through printer parallel port and electricity-taking method thereof Download PDFInfo
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- CN102169362A CN102169362A CN2011100008419A CN201110000841A CN102169362A CN 102169362 A CN102169362 A CN 102169362A CN 2011100008419 A CN2011100008419 A CN 2011100008419A CN 201110000841 A CN201110000841 A CN 201110000841A CN 102169362 A CN102169362 A CN 102169362A
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Abstract
The invention provides a print server for taking electricity through a printer parallel port without using an external power supply and an electricity-taking method thereof. The work of the existing print server is dependent on the external power supply, so a print service system is complex in structure. The print server provided by the invention is characterized in that an idle pin in the printer parallel port is used for taking electricity, and an acquired voltage is further adjusted so as to acquire an output voltage which is directly used as a working voltage of the print server. The invention provides a method for taking the electricity through the parallel port. The structure of the whole print system is simplified, the parallel port electricity-taking is stable and is difficult to be interfered by the outside, and the stable continuous work of the print server is ensured.
Description
Technical field
The present invention relates to the method for a kind of printer parallel port power taking, the printing server that specifically refers to pass through the method for printer parallel port power taking and pass through the power taking of printer parallel port.
Background technology
The parallel port printing server is directly connected to printer as the service equipment of parallel port printer by the parallel port, is connected in the network by network interface simultaneously, and the computer in the network can both be printed on the printer of parallel port by printing server via network.
The main purpose of design of existing parallel port is the transmitted in both directions of data and control signal, is used for computer and directly connects printer at the beginning of design.Printer there is no need to consider that as the peripheral hardware of computer printer is by the demand of parallel port to the computer power supply.The time of occurrence of printing server will be later than the definition time of parallel port, does not therefore consider the real needs of printing server when the definition parallel port.In the environment for use of existing printing server, printing server is that independent circumscribed exchange power supply by interchange commentaries on classics direct current is powered, because the volume and weight of circumscribed exchange power supply is all bigger, therefore in power supply process than the situation that is easier to occur coming off, thereby have influence on the operation stability of printer and total system.
Summary of the invention
The present invention aims to provide a kind of simple in structure, without external power supply, can also provide the method for printing server by the power taking of printer parallel port simultaneously by the printing server of printer parallel port power taking.
Printing server by the power taking of printer parallel port of the present invention, printing server is plugged on the printer by the parallel port, described printing server comprises shell, parallel port, netting twine interface, printed board, it is characterized in that, also be provided with a seamless circuit in the printed board, the input end of described seamless circuit is the idle stitch of printing server parallel port, and the output terminal of seamless circuit is as the power supply of printing server.
The present invention also provides the method for printing server parallel port power taking, described printing server is plugged on the printer by the parallel port, it is characterized in that, idle stitch in the printer parallel port is as the power taking stitch, the power taking stitch contacts with the corresponding stitch of printing server, this stitch of printing server is as input end, and behind the seamless circuit, the magnitude of voltage of output terminal is the operating voltage of printing server.
The invention has the beneficial effects as follows: when install in system (1), need not to arrange independently supply line, as long as printing server is plugged on the printer by the parallel port for printing server.(2) avoided coming off or kicking the situation of the printing server power failure that the external power supply electric wire causes, made the operation of printing server more stable, and further guarantee the operation stability of total system owing to external power supply.
Description of drawings
Fig. 1 is the present invention's 25 stylus printers seal server and 25 needle printer parallel port synoptic diagram;
Fig. 2 is the present invention's 36 stylus printers seal server and 36 needle printer parallel port synoptic diagram;
Fig. 3 is the circuit diagram of seamless circuit among the present invention.
The Reference numeral of embodiment 1: 1-printer parallel port, 2-printing server parallel port, the 3a-printer stitch that leaves unused, the 3b-printing server stitch that leaves unused;
The Reference numeral of embodiment 2: 4-printer parallel port, 5-printing server parallel port, the 6a-printer stitch that leaves unused, the 6b-printing server stitch that leaves unused.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
25 pin parallel port printing servers comprise shell, 25 pin parallel ports, netting twine interface, printed board, and this printing server is plugged on the printer by the parallel port.The printer parallel port 1 of being pegged graft is 25 pin parallel ports, and printing server parallel port 2 is corresponding one by one with the stitch of printer parallel port 1, as shown in Figure 1.The sheet metal of the corresponding stitch 3b of printing server contacts with the sheet metal of printer power taking stitch 3a, and by printer power taking stitch 3a power taking.Also have a seamless circuit on the printing server circuit printing plate, printing server stitch 3b is as the input end of seamless circuit, and the output end voltage of seamless circuit is as the printing server supply voltage.
The principle of the main foundation of selection of power taking stitch is: each stitch of (1) printer parallel port all has definition separately, transmits different signals.Though but some stitch also has corresponding definition, these stitch are not applied in the current printer, do not play any effect in signal processing; Can not have influence on these stitch the operate as normal of printer as the power taking stitch; (2) selected stitch should have voltage, electric current, could realize the function of power taking like this.
In the 25 pin parallel port printers, can select 14 stitch to carry out power taking, the reasons are as follows as the power taking stitch:
1) although 25 pin parallel port standards has definition for the 14th stitch, but in the entire process flow process of existing parallel port printing server and POS printer, all do not use the 14th stitch, therefore, adopt the power supply of the 14th stitch can not influence the operate as normal of printing server and POS printer.
2) in the definition of parallel port, it is effective that 14 stitch are defined as low level, and peacetime state is high level 5V, and we are stabilized in 5V with supply voltage, can not have influence on the operate as normal of other stitch of parallel port equally.Also guarantee to support the printer of parallel port power supply simultaneously.Connect the parallel port voltage security that can guarantee computer behind the computer, the parallel port that can not burn computer.
3) printing server utilizes the seamless circuit to change into the required voltage of printing server after 14 pin power takings of parallel port again.In a single day there is low level output can carry out insulation blocking in case this circuit also guarantees die terminals, not influenced by high level with the protection chip.
Embodiment 2
36 pin parallel port printing servers comprise shell, 36 pin parallel ports, netting twine interface, printed board, and this printing server is plugged on the printer by the parallel port.The printer parallel port 4 of being pegged graft is 36 pin parallel ports, and printing server parallel port 5 is corresponding one by one with the stitch of printer parallel port 4, as shown in Figure 1.The sheet metal of the corresponding stitch 6b of printing server contacts with the sheet metal of printer power taking stitch 6a, and by printer power taking stitch 6a power taking.Also have a seamless circuit on the printing server circuit printing plate, the stitch 6b of printing server is as the input end of seamless circuit, and the output end voltage of seamless circuit is as the printing server supply voltage.
The principle of the main foundation of selection of power taking stitch is: each stitch of (1) printer parallel port all has definition separately, transmits different signals.Though but some stitch also has corresponding definition, these stitch are not applied in the current printer, do not play any effect in signal processing; Can not have influence on these stitch the operate as normal of printer as the power taking stitch; (2) selected stitch should have voltage, electric current, could realize the function of power taking like this.
In the 36 pin parallel port printers, can select 35 stitch to carry out power taking, the reasons are as follows as idle stitch:
1) although 36 pin parallel port standards has definition for the 35th stitch, but in the entire process flow process of existing parallel port printing server and parallel port printer, all do not use the 35th stitch, therefore, adopt the power supply of the 35th stitch can not influence the operate as normal of printing server and parallel port printer.
2) in the definition of parallel port, it is effective that 35 stitch are defined as low level, and peacetime state is high level 5V, and we are stabilized in 5V with supply voltage, can not have influence on the operate as normal of other stitch of parallel port equally.Also guarantee to support the printer of parallel port power supply simultaneously.Connect the parallel port voltage security that can guarantee computer behind the computer, the parallel port that can not burn computer.
3) printing server utilizes the seamless circuit to change into the required voltage of printing server after 35 pin power takings of parallel port again.In a single day there is low level output can carry out insulation blocking in case this circuit also guarantees die terminals, not influenced by high level with the protection chip.
Described seamless circuit comprises chip MC34063, and this chip is the ambipolar linear integrated circuit of a monolithic, is exclusively used in direct current and becomes direct current transducer, can work under the input voltage of 3.0-40V.This seamless circuit comprises the short-circuit current restriction, low quiescent current, and working oscillation frequency is from 100HZ to 100KHZ.Through after the adjustment of this seamless circuit, output voltage is Vout=3.3V, and the power supply that can be used as printing server uses.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. pass through the printing server of printer parallel port power taking, printing server is plugged on the printer by the parallel port, described printing server comprises shell, parallel port, netting twine interface, printed board, it is characterized in that, also be provided with a seamless circuit in the printed board, the input end of described seamless circuit is the idle stitch of printing server parallel port, and the output terminal of seamless circuit is the power supply of printing server.
2. printing server according to claim 1 is characterized in that, the power taking stitch of 25 pin parallel port printers is the 14th stitch.
3. printing server according to claim 1 is characterized in that, the power taking stitch of 36 pin parallel port printers is the 35th stitch.
4. the method for printing server parallel port power taking, described printing server is plugged on the printer by the parallel port, it is characterized in that, idle stitch in the printer parallel port is as the power taking stitch, the power taking stitch contacts with the corresponding stitch of printing server, this stitch of printing server is as input end, and behind the seamless circuit, the voltage of output terminal is the operating voltage of printing server.
5. electricity-fetching method according to claim 4 is characterized in that, the power taking stitch of 25 pin parallel port printers is the 14th stitch.
6. electricity-fetching method according to claim 4 is characterized in that, the power taking stitch of 36 pin parallel port printers is the 35th stitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100008419A CN102169362A (en) | 2011-01-05 | 2011-01-05 | Print server for taking electricity through printer parallel port and electricity-taking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100008419A CN102169362A (en) | 2011-01-05 | 2011-01-05 | Print server for taking electricity through printer parallel port and electricity-taking method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102169362A true CN102169362A (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100008419A Pending CN102169362A (en) | 2011-01-05 | 2011-01-05 | Print server for taking electricity through printer parallel port and electricity-taking method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0081439A2 (en) * | 1981-12-03 | 1983-06-15 | KERMA Sociéte Anonyme | Ski pole |
| CN1089044A (en) * | 1992-12-28 | 1994-07-06 | 北京昆仑电子印刷技术公司 | The network print controller of sharing printed in Chinese and western languages |
| JPH08187920A (en) * | 1995-01-13 | 1996-07-23 | Canon Inc | Printer controller |
| CN1164687A (en) * | 1996-04-26 | 1997-11-12 | 三星电子株式会社 | Computer capable of power supply to peripheral equipment using concurrent terminal |
-
2011
- 2011-01-05 CN CN2011100008419A patent/CN102169362A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0081439A2 (en) * | 1981-12-03 | 1983-06-15 | KERMA Sociéte Anonyme | Ski pole |
| CN1089044A (en) * | 1992-12-28 | 1994-07-06 | 北京昆仑电子印刷技术公司 | The network print controller of sharing printed in Chinese and western languages |
| JPH08187920A (en) * | 1995-01-13 | 1996-07-23 | Canon Inc | Printer controller |
| CN1164687A (en) * | 1996-04-26 | 1997-11-12 | 三星电子株式会社 | Computer capable of power supply to peripheral equipment using concurrent terminal |
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Application publication date: 20110831 |