JP5428894B2 - CO2 emission management system and CO2 emission management method - Google Patents

Description

The present invention relates to a CO ₂ emission management system considering reduction of CO ₂ emission in a network system in which a plurality of image forming apparatuses are connected to a network, and CO ₂ emission management executed by this CO ₂ emission management system. Regarding the method.

Corresponding to the recent environmental load problem, CO ₂ emission has become a problem. Since the image forming apparatus includes not only power consumption but also consumables such as used paper and toner, a technique for obtaining the CO ₂ emission amount for both is known. As such a technique, for example, the invention disclosed in Patent Document 1 or 2 is known.

Among the above Patent Document 1 (JP 2002-6696), grasp the CO ₂ emission actual easy CO ₂ emission calculating process and CO ₂ emissions management system, and recommended for CO ₂ emissions reduction In order to provide an image forming apparatus capable of presenting a mode and performing improvement prediction, a value of power consumption consumed in a specific period is obtained by using the image forming apparatus, and converted into CO ₂ emission amount. By using the image forming apparatus, the consumption amount of the consumables consumed in a specific period is obtained to obtain the CO ₂ emission amount, and the respective emission amounts are added, and this is added to the CO ₂ emission in the specific period of the image forming apparatus. An invention characterized in that it is output as a quantity is described.

Patent Document 2 (Japanese Patent Laid-Open No. 2006-317355) is connected via a network to calculate power consumption and CO ₂ emissions for a plurality of devices having different specifications connected on the network. Select a monitoring protocol for acquiring power information related to power consumption of a device by referring to information related to the operation of the device acquired by the calculation condition acquiring unit that acquires information related to the operation of the device and the calculation condition acquiring unit. The invention is characterized by acquiring power information related to power consumption based on a monitoring condition setting unit and a monitoring protocol selected by the monitoring condition setting unit.

However, when the recommended mode in which the reduction of the CO ₂ emission amount can be expected as in the prior art is presented or displayed, even if the CO ₂ emission amount of the image forming apparatus is less than the upper limit value, the user does not select the recommended mode. The user can print out in a unique print setting mode. Therefore, if a print job with a large number of printed sheets is output in the normal print mode instead of the recommended mode, the upper limit value of the CO ₂ emission amount of the image forming apparatus is eventually exceeded. There may be cases.

Further, even if the CO ₂ emissions of the image forming apparatus exceeds the upper limit value, only to present or display the recommended mode, print output in the recommended mode are possible, CO ₂ emissions limit value of the image forming apparatus Is not managed. Therefore, as a result, the upper limit value of the CO ₂ emission amount of the apparatus may be exceeded. Furthermore, no consideration is given to a countermeasure when the upper limit value of the CO ₂ emission amount of the image forming apparatus is exceeded.

Therefore, an object of the present invention is to provide, in terms of relative upper limit of CO ₂ emissions of an image forming apparatus in the network environment to allow management or suppression of CO ₂ emissions, also possible to achieve improvement in convenience It is in.

In order to solve the above problem, a first means is a CO ₂ emission management system that reduces CO ₂ emission when using a plurality of image forming apparatuses connected to a network. and CO ₂ emission amount obtaining means for obtaining information that is converted from the power consumption amount for the job output in CO ₂ emissions, totals the CO ₂ emissions per print job output obtained by the CO ₂ emission amount obtaining means aggregation means and, an upper limit value storing means for storing an upper limit value of the CO ₂ emissions of a specific time period, CO ₂ of an image forming apparatus stored by the counting result with the upper limit value storing unit CO ₂ emissions by the aggregator A determination unit that compares and determines an upper limit value of the emission amount, and the network includes CO ₂ emissions stored in the upper limit value storage unit of each of the plurality of image forming apparatuses. A management device that manages the upper limit value of the amount and the acquisition information of the CO ₂ emission amount by the counting unit is further connected, and the management device sets the upper limit value of the CO ₂ emission amount based on the determination result based on the determination unit. Retrieving means for retrieving image forming apparatus information capable of proxy printing in response to notification from the excess image forming apparatus, and image forming apparatus information retrieved by the retrieving means and capable of proxy printing for unprinted print jobs Proxy notification means for notifying the output instruction source, and when any of the image forming apparatuses exceeds the upper limit value of the CO ₂ emission amount, the non-output printing is performed by the image forming apparatus notified from the proxy notification means. A job is output.

In the embodiment described later, the network is denoted by reference numeral NT, the plurality of image forming apparatuses are denoted by reference numerals 201 to 20N, the CO ₂ emission amount acquisition unit is acquired by the CO ₂ emission amount acquisition unit 109, and the aggregation unit is acquired by the aggregation unit 110. the upper limit value storage means the upper limit value storage unit 111, the judging means judging unit 112, the management device code 114, the search means to search section 115, proxy notifying means, respectively it in the proxy notification unit 116, the corresponding To do.

According to the present invention, which is configured as above, in order for the upper limit of the CO ₂ emissions of an image forming apparatus in the network environment to allow management or suppression of CO ₂ emissions, the convenience Improvement can also be achieved.

1 is a block diagram showing an overall configuration of an image forming system in a network environment according to an embodiment of the present invention. It is a flowchart which shows the process sequence which performs a proxy printing process according to the instruction | indication of a proxy printing instruction | indication part. It is a flowchart which shows the process sequence of the search and determination of a substitute image forming apparatus by a search part. It is a flowchart which shows the process sequence of the notification process in a proxy notification part. 6 is a diagram illustrating a processing example of a use permission process of the image forming apparatus. FIG. FIG. 2 is a block diagram illustrating an example of an image forming apparatus in a specific shared group connected to a network managed by a management apparatus.

The present invention provides a plurality of image forming apparatus in a particular sharing group connected to the network, and manages the CO ₂ emissions for the upper limit of the CO ₂ emissions of a specific period of each image forming apparatus in the sharing group, When the CO ₂ emission amount in a specific period of a specific image forming apparatus in the sharing group exceeds the upper limit value, the print job output of the image forming apparatus that exceeds the upper limit value of the CO ₂ emission amount is forcibly disabled. the other image forming apparatus that does not inhibit the CO ₂ emissions exceed the upper limit value of the CO ₂ emissions management server is connected to the shared group for the upper limit of the CO ₂ emissions of a specific time period by Search, and search by the management server, and perform other printing processing of the print job of the disabled image forming apparatus using another image forming apparatus in the determined sharing group as a shared apparatus It is like that.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an overall configuration of an image forming system in a network environment according to an embodiment of the present invention. In the figure, an image forming system according to the present embodiment is connected to a plurality of image forming apparatuses 201, 202,... 20N (N: an integer of 2 or more) connected to a network NT in an image environment. PCs (personal computers) 301, 302,... 30M (M: integer greater than or equal to 1) capable of instructing the printing apparatus to print output to the forming apparatuses 201 to 20N, and a management apparatus 114 connected in a network environment It basically consists of

  One image forming apparatus 201 includes a CPU (microprocessor) 101, a memory 102, an HDD 103, a display unit 104, a data transmission / reception unit 105, a network I / F 106, an image forming unit 107, a CO2 emission amount calculation unit 108, and a CO2 emission amount acquisition. A section 109, a totaling section 110, an upper limit storage section 111, a determination section 112, a warning notification section 113, and a proxy printing instruction section 117. The CPU 101 includes a ROM and a RAM (not shown), uses the RAM as a work area and a data buffer, and executes control of the entire image forming apparatus 201 and each unit according to a program stored in the ROM. The memory 102 forms image image data of a print job or temporarily stores data when the CPU 101 performs data processing. The HDD 103 can write (accumulate) image data of a print job formed by the memory 102 and read the accumulated data. The display unit 104 also functions as an input unit that displays various information related to print settings of the image forming apparatus or can input various settings when printing. The data transmission / reception unit 105 is for transmitting and receiving data between the image forming apparatus 201 and devices connected to the network NT via the network I / F 106 of the image forming apparatus. The image forming apparatus 107 reads out the image image data formed by the memory 102 or the image image data temporarily stored in the HDD 103 and prints it on a recording sheet. Each unit of the image forming apparatus 201 is connected to the CPU 101 via a bus, and connected to the network NT via a network I / F 106 connected to the bus.

CO ₂ emission calculation unit 108, based on the calculation of CPU 101, calculates the CO ₂ emissions from the power consumption amount for the print job output of the image forming apparatus 201. The CO ₂ emission amount acquisition unit 109 can acquire information on the CO ₂ emission amount calculated by the CO ₂ emission amount calculation unit. The totaling unit 110 totals the CO ₂ emission amount for each print job output acquired by the CO ₂ emission amount acquisition unit 109 based on the arithmetic processing of the CPU 101. The upper limit storage unit 111 preliminarily sets and stores information on the upper limit value of the CO ₂ emission amount for a predetermined specific period of each of the image forming apparatuses 201 to 20N. Determination unit 112, and CO ₂ emissions aggregation data obtained by aggregating an aggregate unit 110, the CO ₂ emissions limit of the image forming apparatus is stored in the upper limit storage unit 111 compares, based on the calculation results of the CPU 101, Judge the size. The warning notification unit 113 notifies the image forming apparatuses 201 to 20N or the management apparatus 114 of warning information based on the determination result of the determination unit 112.

The management device 114 includes a search unit 115 and a proxy notification unit 116, and is connected in a network environment, and CO ₂ emission acquired from each of the image forming apparatuses 201 to 20N in a specific shared group connected to the network NT. Information on the upper limit value and CO ₂ emission amount is managed for each of the image forming apparatuses 201 to 20N. The search unit 115 includes first and second search candidate units 115a and 115b. When detecting the warning notification information from the warning information notification unit 113, the search unit 115 detects the CO for each image forming apparatus managed by the management unit 114. _{2. From} the information on the discharge amount, an image forming apparatus that can perform proxy printing is searched from the image forming apparatuses in a specific shared group. The proxy notification unit 116 notifies the image forming apparatuses 201 to 20N or the PCs 301 to 30M or the like via the network NT of the information on the image forming apparatuses 201 to 20N that can be searched for by the search unit 115. In other words, image forming apparatus information capable of proxy printing is notified to an output instruction source (in this case, one of PCs 301 to 30M) of a print job that has not been output.

  The proxy printing instructing unit 117 is based on the notification from the proxy notifying unit 116 of the management device 114, and the image forming apparatus 20Y that can perform proxy printing searched by the searching unit 115 (where Y is an integer of 1 ≦ Y ≦ N). And Y ≠ X, where X will be described later).

FIG. 2 is a flowchart showing a processing procedure for executing proxy printing processing in accordance with an instruction from the proxy printing instruction unit 117.
In the figure, information on the upper limit value of the CO ₂ emission amount for a predetermined specific period of the image forming apparatuses 201 to 20N is preset and stored in a nonvolatile memory such as NVRAM (step S101). CO ₂ emission calculation unit 108 calculates the CO ₂ emissions from power consumption for each print job in the image forming apparatus on the basis of the calculation processing of CPU 101, the information of the calculated CO ₂ emissions CO ₂ emissions acquired The part 109 acquires (step S102). The totaling unit 110 totals and manages the CO ₂ emission amount for each print job output acquired by the CO ₂ emission amount acquisition unit 109 based on the arithmetic processing of the CPU 101 (step S103). CPU101 compares the CO ₂ emissions aggregated data aggregated by the aggregating unit 110, and a CO ₂ emission amount upper limit value of the image forming apparatus 201~20N stored in the upper limit value storage unit 111 (Step S104) .

Then, the determination unit 112 determines the comparison result, CO ₂ emissions of the image forming apparatus 201~20N that are aggregated by aggregation unit 110, CO ₂ emissions of the image forming apparatus is stored in the upper limit storage unit 111 When the amount upper limit value is exceeded (step S105—Yes), the CPU 101 sets the image forming apparatus that has exceeded the CO ₂ emission amount upper limit value (for example, “20X”, where X is an integer of 1 ≦ X ≦ N. ) Is temporarily spooled in the HDD 103 (step S106). Further, the warning notification unit 113 notifies the image forming apparatus 20X and the management apparatus 114 of warning notification information indicating that the print job output of the image forming apparatus 20X exceeding the upper limit value of the CO ₂ emission amount cannot be used (step S107). ).

When the management device 114 detects warning notification information transmitted from the warning notification unit 113, the search unit 115 provides information on the CO ₂ emission amount of each image forming device in a specific shared group G1 managed by the management device 114. Based on the above, the image forming apparatus 20Y capable of proxy printing is searched and determined (step S108). The proxy notification unit 116 retrieves the information of the image forming apparatus 20Y that is searched by the search unit 115 and can be used for proxy printing, and outputs the print job output spooled in the image forming apparatus 20X that has become unusable via the network NT. Notify the instruction source. In the case of a copy print job, the display unit 104 of the image forming apparatus 20Y is notified, and in the case of print printing from the PC 30Z (where Z is an integer of 1 ≦ Z ≦ M), the display unit 104 of the image forming apparatus 20Y. Is also notified to the printing instruction source PC 30Z (step S109).

  Based on the notification from the proxy notification unit 116, the proxy printing instruction unit 117 instructs the image forming apparatus 20 </ b> Y capable of proxy printing searched by the search unit 115 to perform proxy printing of the print job spooled in the HDD 103. The proxy image forming apparatus 20Y performs proxy printing processing (step S110).

FIG. 3 is a flowchart illustrating a search and determination processing procedure of the substitute image forming apparatus by the search unit.
In the same figure, the management apparatus 114 has image forming apparatuses 201 to 20N (see FIG. 6) in a specific shared group G1 (G1 represents one of a plurality of groups) connected to the network NT. The CO ₂ emission amount upper limit value acquired from the information and the CO ₂ emission amount information are managed (step S201). When the warning notification information is detected from the warning notification unit 113 (step S202), the search unit 115 is managed by the management device 114. A search for an apparatus capable of proxy printing is started from the image forming apparatuses 201 to 20N in the shared group G1 that has been set (step S203).

In the search, first, in the first search candidate unit 115a, the CO ₂ emission amount is less than the upper limit value from the information of the CO ₂ emission amount upper limit value and the CO ₂ emission amount of each image forming apparatus managed by the management apparatus 114. The image forming apparatus is searched as a proxy printing candidate (step S204). Next, the second search candidate unit 115b searches the image forming apparatuses 201 to 20N searched by the first search candidate unit 115a for the proxy printing candidate for the image forming apparatus that has returned from energy saving. (Step S205).

Thereafter, from among the searched image forming apparatuses in the second search candidate section 115b, a difference amount (margin amount) proxy image the largest image forming apparatus between the upper limit value and CO ₂ emissions CO ₂ emissions The device 20Y is determined (steps S206, S207, S209).

Thus, by searching and determining an image forming apparatus in a state where energy saving has been restored preferentially as a substitute printing apparatus, it is possible to reduce the CO ₂ emission amount of the image forming apparatus during the energy saving restoration operation. Become.

Further, when all the states of the image forming apparatuses 201 to 20N searched by the second search candidate unit 115b are in the state of shifting to energy saving (step S206), the searched image forming apparatuses in transition of energy saving are selected. , the amount of difference between the upper limit and the CO ₂ emissions CO ₂ emissions (margin amount) determines the largest image forming apparatus as an alternate image forming apparatus 20Y (step S208, S209).

FIG. 4 is a flowchart illustrating a processing procedure of notification processing in the proxy notification unit.
In FIG. 4, the proxy notification unit 116 searches for and determines a proxy image forming apparatus that can perform proxy printing in the search unit 115, and then starts notification processing (step S301). When the print job spooled in the image forming apparatus 20X that has become unusable because it exceeds the CO ₂ emission amount upper limit value is an instruction to output a copy print job from the unusable image forming apparatus 20X ( In step S302, S303-Yes, S304), the proxy notifying unit 116 searches the search unit 115 and displays information regarding the determined proxy image forming apparatus 20Y on the display unit 104 of the image forming apparatus 20Y to notify the proxy. . Further, when the print job spooled in the image forming apparatus 20X that has exceeded the upper limit of CO ₂ emission amount and has become unusable is an output instruction of a print print job from the PC 30Z connected to the network NT (step) (S302, S303-No, S305), the proxy notifying unit 116 searches the search unit 115 and displays the information related to the determined proxy image forming apparatus 20Y on the display unit 104 of the image forming apparatus 20Y for notification. The notification is also sent to the print instruction source PC 30Z.

FIG. 5 is a diagram illustrating a processing example of use permission processing of the image forming apparatus.
The upper limit value of the CO ₂ emission amount for a predetermined period of the image forming apparatus is set and stored in the upper limit value storage unit 111 in advance. The totaling unit 110 totals the CO ₂ emission amount for each print job output of the image forming apparatuses 201 to 20N acquired from the CO ₂ emission amount acquisition unit 109. Further, the period (time) is measured and managed by a function such as RTC (real time clock) during a predetermined period in which the upper limit value of the CO ₂ emission amount is set. In the processing example shown in FIG. 5, the cycle of the predetermined period 1 is started at the initial period SO (point S0), and the counting of the CO ₂ emission amount by the counting unit 110 is started. When CO ₂ emissions were aggregated in aggregation unit 110 at the point S1, which is a period has elapsed to exceed the CO ₂ emission amount upper limit value stored in the upper limit storage unit 111, the point S2 from the point S1 in the predetermined period 1 During the period, the print job output of the image forming apparatus 20X is disabled.

When reaching the point S _2, CO ₂ cycles of a predetermined period 1 defining an upper limit value of the emission is completed, the point S2 in the course of the point S3, has been CO ₂ emissions aggregated in aggregates 110 Clear data information. Then, the output of the print job of the image forming apparatus 20X which has been disabled is permitted, and information indicating that the image forming apparatus 20X is usable is notified to the display unit 104 and displayed. Since the CO ₂ emission amount of the counting unit 110 is 0 at the point S3, the cycle of the next predetermined period 2 is started from this point S3, and the counting of the CO ₂ emission amount by the counting unit 110 is started in this cycle. The process shown in FIG. 2 is executed.

  FIG. 6 is a block diagram illustrating an example of an image forming apparatus in a specific shared group connected to the network managed by the management apparatus.

  The management apparatus 114 forms and manages a specific shared group for the plurality of image forming apparatuses 201 to 20N connected to the network NT. Formation of the shared group by the management apparatus 114 forms the image forming apparatuses 201 to 20N that can share and use proxy printing as the shared group G1 based on the use environment conditions of the users who use the image forming apparatuses 201 to 20N. . The shared group G1 is set up and managed for each office, and the image forming apparatuses 201 to 20N managed as one shared group, or the image forming apparatus 201 installed and managed for each organization (each department). -20N is formed as one shared group.

As described above, according to the present embodiment, 1) the CO ₂ emission amount with respect to the upper limit value of the CO ₂ emission amount of each of the image forming apparatuses 201 to 20N connected to the network NT is managed, and the specific image forming apparatus 20X If CO ₂ emissions exceeds the upper limit value of the CO ₂ emissions, optimum image forming apparatus 20Y which in other image forming apparatus connected to the network NT, and does not exceed the upper limit value of the CO ₂ emissions Make proxy printing with. This allows CO ₂ emissions management and control for the upper limit of the CO ₂ emissions of the image forming apparatus 201 to 20N. In addition, it is possible to realize an image forming apparatus system with high usability (convenience) by shared use in the image forming apparatuses 201 to 20N connected to the network NT.
2) In the plurality of image forming apparatuses 201 to 20N in the specific sharing group G1 connected to the network NT, the CO with respect to the upper limit value of the CO ₂ emission amount in the specific period of each of the image forming apparatuses 201 to 20N in the sharing group G1 ₂ and a management device 114 that manages the emission amount, and when the CO ₂ emission amount in a specific period of the specific image forming apparatus 20X in the shared group G1 exceeds the upper limit value, the image that exceeds the upper limit value of the CO ₂ emission amount The print job output of the forming apparatus 20X is forcibly disabled. This allows CO ₂ emissions management and control for the upper limit of the CO ₂ emissions of a specific time period.
3) When the print job output of the image forming apparatus 20X that exceeds the upper limit value of the CO ₂ emission amount is forcibly disabled, the management apparatus 114 discharges the CO ₂ that is connected to the shared group G1 by the search unit 115. Another image forming apparatus that does not exceed the upper limit of the amount is searched and determined. In this way, it is possible to perform proxy printing processing of the print job of the disabled image forming apparatus 20X using the image forming apparatus 20Y searched and determined by the search unit 115 of the management apparatus 114 as a shared apparatus. Therefore, it is possible to improve the usability (convenience) associated with the shared use of the image forming apparatuses 201 to 20N connected in the shared group G1 of the network NT.
There are effects such as.

  It should be noted that the present invention is not limited to this embodiment, and various modifications are possible, and all technical matters included in the technical idea of the invention described in the scope of claims are the subject of the present invention. .

101 CPU
104 display unit 109 CO ₂ emissions acquiring unit 110 counting part 111 upper limit storage unit 112 determination unit 113 warning notification unit 114 managing apparatus 115 search unit 115a first search suggestions portion 115b second search suggestions 116 proxy notification unit 201 -20N Multiple image forming apparatuses 301-30M Personal computer G1 Specific sharing group NT network

JP 2002-006696 A JP 2006-317355 A

Claims (11)

A CO ₂ emission management system for reducing CO ₂ emission during use of a plurality of networked image forming apparatuses,
The image forming apparatus includes:
CO ₂ emission acquisition means for acquiring information converted into CO ₂ emission from power consumption for print job output;
A counting means for counting the CO ₂ emission amount for each print job output acquired by the CO ₂ emission amount acquiring means;
Upper limit storage means for storing the upper limit value of the CO ₂ emission amount for a specific period;
It said aggregator compares the CO ₂ emissions limit value of the memory image forming apparatus by counting result with the upper limit value storing means CO ₂ emissions, a determination unit,
And the network manages the upper limit value of the CO ₂ emission amount stored in the upper limit value storage means of each of the plurality of image forming apparatuses and the acquisition information of the CO ₂ emission amount by the aggregation means The device is further connected,
The management device
Search means for searching for image forming apparatus information capable of proxy printing in response to a notification from an image forming apparatus that exceeds an upper limit value of CO ₂ emission based on a determination result based on the determination means;
Proxy notification means for notifying the output instruction source of the print job that has not been output, the image forming apparatus information that is searched by the search means and is capable of proxy printing;
Comprising a, any of the image forming apparatus is characterized in that to output a print job of the non-output by an image forming apparatus that has received If you exceed the upper limit value of the CO ₂ emissions, the notification from the proxy notification means CO ₂ Emission management system. The CO ₂ emission management system according to claim 1,
The plurality of image forming apparatuses form a specific sharing group;
The management device, the CO ₂ emissions management system characterized by managing information acquired upper limit value and the CO ₂ emissions of each image forming apparatus in the share group to which the formed. A CO ₂ emission management system according to claim 2,
The specific sharing group, CO ₂ emissions and forming a plurality of image forming apparatus capable of sharing the use of the proxy printing based on the operating environment of the user who uses the image forming apparatus as a group Quantity management system. The CO ₂ emission management system according to any one of claims 1 to 3,
When the upper limit value of the CO ₂ emission amount is exceeded based on the determination result based on the determination unit, the image forming apparatus includes the output instruction source information of an unoutput print job of the image forming apparatus and the image forming apparatus. A CO ₂ emission reduction system comprising warning information for displaying warning information indicating that the print job output cannot be used on the display means and notifying the management apparatus. A CO ₂ emission management system according to any one of claims 1 to 4,
The search means includes
And CO ₂ emission amount upper limit value of each image forming apparatus wherein the management apparatus manages said and CO ₂ emissions and proxy printing candidate image forming apparatus is less than the upper limit value of the CO ₂ emission amount based on the respective image forming apparatuses First search candidate means for
Second search candidate means for searching for a proxy printing candidate from the image forming apparatus of the first search candidate means;
A CO ₂ emission management system comprising: The CO ₂ emission reduction system according to claim 5,
The second search candidate means preferentially selects an image forming apparatus in a state of returning from the energy saving mode from among the image forming apparatuses of the first search candidate means, as a proxy printing candidate.
The search means sets the image forming apparatus having the largest difference amount between the CO ₂ emission amount upper limit value and the CO ₂ emission amount among the substitute print candidates searched by the second search candidate means as a substitute image forming apparatus. A CO ₂ emission management system characterized by determining. The CO ₂ emission reduction system according to claim 5,
When all of the image forming apparatuses searched by the second search candidate means are in the energy saving mode state, the CO ₂ emission amount upper limit value is selected from the image forming apparatuses in the energy saving mode state searched by the second search candidate means. CO ₂ emissions management system, characterized in that the difference amount between the CO ₂ emissions to determine the largest image forming apparatus as an alternate image forming apparatus. A CO ₂ emission management system according to claim 4,
The proxy notification unit has a function of determining an output instruction source of a non-output print job spooled in the image forming apparatus that has notified the warning information from the warning notification unit. In the case of an instruction to output a copy print job from the image forming apparatus that has notified the warning information, information regarding the substitute image forming apparatus that can perform the proxy printing searched by the search unit is displayed on the image forming apparatus that has notified the warning information. A CO ₂ emission management system characterized by displaying on a means. A CO ₂ emission management system according to claim 8,
The proxy notifying unit, when the instructor of output of the unprinted print job is an output instruction of a print print job from a personal computer, stores information regarding the proxy image forming apparatus capable of proxy printing searched by the search unit. The CO ₂ emission management system is characterized in that the warning information is displayed on the display means of the image forming apparatus that has been notified, and is also notified to the personal computer that is the instruction source for the output of the unprinted print job. A CO ₂ emission management system according to any one of claims 1 to 9,
It exceeds the upper limit value of the CO ₂ emissions on the basis of the determination result based on the determination means, the print job output by the image forming apparatus becomes unavailable, defines the upper limit of the CO ₂ emissions limit value storage unit When the predetermined period is reached, the data information of the CO ₂ emission amount totaled by the totaling means within the predetermined period is cleared, and the output of the print job of the image forming apparatus which has been disabled is permitted, and the image A CO ₂ emission management system, wherein information indicating that the forming apparatus is usable is displayed on a display means. A method for reducing CO ₂ emissions in an image forming network system for reducing CO ₂ emissions during use of a plurality of network-connected image forming apparatuses,
The image forming apparatus includes:
The information converted from the power consumption amount for the print job output to the CO ₂ emissions acquired in CO ₂ emissions obtaining means,
Aggregate the CO ₂ emissions for each print job output obtained by the aggregation means ,
The upper limit value storage means stores the upper limit value of CO ₂ emissions for a specific period,
And counting result of CO ₂ emissions, the determination means whether one of the image forming apparatus by comparing the CO ₂ emission amount upper limit value of the stored image forming apparatus exceeds the upper limit value of the CO ₂ emissions Judgment,
The management device separately connected to the network is
Managing the upper limit value of each CO ₂ emission amount acquired from the plurality of image forming apparatuses and the acquired information of the aggregated CO ₂ emission amount,
Based on the determination result of the determination means, the search means searches for image forming apparatus information that can be subjected to proxy printing in response to a notification from the image forming apparatus that has exceeded the upper limit of the CO ₂ emission amount,
Notify the proxy notifying means output instruction source of the print job not yet output the substitute printing the image forming apparatus information can retrieved by said retrieval means,
When any one of the plurality of image forming apparatuses exceeds the upper limit value of the CO ₂ emission amount, the image forming apparatus notified by the proxy notification unit outputs the unoutput print job. And a CO ₂ emission management method for an image forming network system.

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