JP2001260493A - Network printer system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a network printer system which can do error recovery without resending data from a computer apparatus. SOLUTION: In the network printer system comprising a printer 3 and an N-memory server 5, the printer 3 reads back a printer intermediate language accumulated in the server 5 in parallel with the output of data from an undischarged page again to the printer 3 when a printer error is generated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a network printer, and more particularly to a network printer system for cooperatively utilizing printer data with another machine via a network.

[0002]

2. Description of the Related Art In general, a printer uses a language (PDL-Print) capable of understanding an output file from a computer device such as a PC (Personal Computer).
erDescription (Language), and the controller is a printer intermediate language, Dis.
play List file (hereinafter, "DL file")
That. ) To convert it to bitmap data and output it to the engine.

In such a printer, a storage auxiliary means such as an HDD is provided, and a DL file is sequentially stored in the printer simultaneously with output, so that a DL file stored in the event of a printer error (for example, a jam) can be stored. There is a technology that facilitates error recovery work by reading from the next page.

[0004]

However, this technique cannot be applied to a printer which is inexpensive and does not have an HDD or the like, and needs to be output again from the computer from the first page.

In such a case, when the computer device and the printer are connected one-to-one, even if an error occurs in the printer, the computer device can issue a new output instruction. Has become common, and when outputting via a server, it is not clear that an error has occurred in the printer until the printer actually goes to the printer. Then, the output file is accumulated in the spooler of the server even when the file is re-outputted, so that the file must be requested by the server administrator to be deleted, which requires a very complicated procedure.

In order to realize the technology even when an inexpensive printer has no HDD, it is conceivable to store the DL file in another computer connected to a network.

However, if error recovery is directly introduced into such a network printer system, the DL file must be downloaded from another computer when data is still being transmitted from the computer at the time of the error. Is confused and cannot output normally.

Accordingly, an object of the present invention is to provide a network printer system capable of performing error recovery without retransmitting data from a computer device.

[0009]

In order to solve this problem, a network printer system according to the present invention is a network printer system including a network-connected printer and a memory server.
An input unit for receiving data from the network, an interpretation control unit for converting the data into a printer intermediate language, a development control unit for expanding the printer intermediate language into a bitmap and storing it in a page memory, and a printer intermediate language via the network An engine having a controller having a memory data input / output unit for transmitting and receiving to and from a memory server, a jam detection unit for detecting a paper jam, a toner empty detection unit for detecting a toner shortage, and a discharge counter for counting the number of discharged sheets The printer intermediate language stored in the memory server in parallel with the data output is read back from the undischarged page to the printer when a printer error occurs.

Thus, error recovery can be reliably performed without retransmitting data from the computer device.

A network printer system according to the present invention is a network printer system comprising a network-connected printer and a memory server. The printer has an input unit for receiving data from a network, and converts the data into a printer intermediate language. A controller having an interpreting control unit, a developing control unit that develops the printer intermediate language into a bitmap and stores it in a band memory, and a memory data input / output unit that transmits and receives the printer intermediate language to and from a memory server via a network. A jam detection unit for detecting a paper jam, a toner empty detection unit for detecting a toner shortage, and an engine having a discharge counter for counting the number of discharged sheets.
In parallel with the data output, the printer intermediate language stored in the memory server is read back to the printer again after performing a flow arbitration with the memory server from the first band of the undischarged page when a printer error occurs.

Thus, even if the printer does not have a page memory, error recovery can be reliably performed, and output can be performed at a speed matching the engine speed by flow arbitration.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a network printer system comprising a printer and a memory server connected to a network, wherein the printer has an input unit for receiving data from the network, Interpretation control unit that converts the
A controller having a development control unit that develops a printer intermediate language into a bit map and stores it in a page memory, a controller that has a memory data input / output unit that transmits and receives the printer intermediate language to and from a memory server via a network, and detects a paper jam And an engine having a discharge counter for counting the number of discharged sheets. The printer intermediate language stored in the memory server in parallel with the output of the data. When a printer error occurs, the page that has not been ejected is read back to the printer, and has the effect that error recovery can be reliably performed without retransmitting data from the computer device.

According to a second aspect of the present invention, there is provided a network printer system including a network-connected printer and a memory server.
An input unit for receiving data from the network, an interpretation control unit for converting the data into a printer intermediate language, a development control unit for expanding the printer intermediate language into a bitmap and storing it in a band memory, and a printer intermediate language via the network An engine having a controller having a memory data input / output unit for transmitting and receiving to and from a memory server, a jam detection unit for detecting a paper jam, a toner empty detection unit for detecting a toner shortage, and a discharge counter for counting the number of discharged sheets The printer intermediate language stored in the memory server in parallel with the data output is read back to the printer again while performing a flow arbitration with the memory server from the first band of the undischarged page when a printer error occurs. It is reliable even for printers without page memory. After performing error recovery has the effect that it is possible to output at a rate that matches the engine speed by flow arbitration.

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. In these drawings, the same members are denoted by the same reference numerals, and duplicate description is omitted.

(Embodiment 1) FIG. 1 is an explanatory diagram showing a configuration of a network printer system according to Embodiment 1 of the present invention, and FIG. 2 is a block diagram showing a hardware configuration of the network printer system according to Embodiment 1 of the present invention. FIGS. 3 and 4 are block diagrams showing the software configuration of the network printer system according to the first embodiment of the present invention.
5 is a flowchart showing a normal operation of the network printer system according to the first embodiment of the present invention, and FIGS. 5 and 6 are flowcharts showing an error operation of the network printer system according to the first embodiment of the present invention.

As shown in FIG. 1, Embodiment 1 of the present invention
In the network printer system, the printer 3 and the finisher 4 include an N-Memory server (memory server).
5 are connected on the LAN 1 so that they can communicate with each other.

Then, a file output instructed by application software or the like on the operation control device 2 connected to the same LAN 1 is transmitted to the printer 3 via a server (not shown), and the printer 3 outputs a DL file (printer intermediate). Language), and this data is printed out while being stored in the N-Memory server 5.

Here, the printer 3, the finisher 4, and the N-Memory server 5 are configured as shown in FIG.

That is, the printer 3 comprises a controller 6 for developing data received from the network into a bitmap, and an engine 7 for outputting the developed bitmap. The controller 6 includes an input unit 8 that receives an output file from the operation control device 2 from the LAN 1 and a printer that outputs input data to a printer intermediate language DL.
An interpretation control unit 9 for converting the file into a file, a DL memory 10 for storing the DL file, a development control unit 12 for developing the DL file to a bitmap, a page memory 11 for storing the developed bitmap data, and one page. An output control unit 13 for outputting a set of data to the engine;
N-Memory input / output unit (memory data input / output unit) for inputting / outputting files to / from N-Memory server 5
It consists of 14. The engine 7 includes a jam detector 15 for detecting a paper jam of the printer, a toner empty detector 16 for detecting a toner shortage, and a discharge counter 17 for counting the number of discharged sheets. Similarly, the finisher 4 is also provided with a jam detection unit 15 for detecting a paper jam in the conveyance path and a discharge counter 17 for counting the number of discharged sheets.

Further, the N-Memory server 5 has the LA
A network input / output unit 19 connected to N1 for inputting / outputting a DL file, and an H for storing the received DL file;
The DD 18 and the necessary D
An N-Memory control unit 20 controls reading and writing of the L file.

It is desirable that the N-Memory server 5 is realized by a PC (personal computer) in terms of cost.

FIG. 3 shows the printer 3 and the N-Memory.
3 shows a software configuration of the server 5.

As shown in the figure, the control software of the printer 3 operates on an RTOS (real-time OS) 23, and has a Main task 29 for managing various tasks at the top. A so-called Mopy output, in which the DL file is stored in the N-Memory server 5 one level below the Main task 29 and the output time is shortened by re-outputting and using this data for the second and subsequent copies, is managed. Mo to do
There are a py task 27 and tasks 28 for controlling other printer operations. These tasks are respectively performed by the built-in memory 21 built in the printer 3 and the N-M
It is necessary to be able to use the external memory using the memory server 5 without being conscious of it. The memory management function 26 manages these controls.

Below the memory management function 26, a memory upper function 24 for handling the built-in memory,
There is an N-Memory management function 25 for handling an external memory of the N-Memory server 5, and a Network driver 22 for controlling a network.

Here, the N-Memory server 5 is a PC
Etc., and in this case, De
The N-Memory server application 32 runs on the sktopOS 31 and has the built-in memory 30 and the HDD 1
8 is exchanged with the printer 3 via the network driver 22.

In the network printer system configured as described above, when an error occurs, the N-Memory
The operation of performing error recovery using the DL file of the y server 5 will be described with reference to FIGS.

The user instructs the operation control device 2 to output data such as an application to the printer 3 and performs file transfer (step S1). As a result, the output file is sent to the printer 3 via a server (not shown), and the printer 3 first sets the DL page counter to 0, and then the interpretation control unit 9 sequentially converts the received file into a DL file and outputs the DL page. The DL file of the counter number is developed in the DL memory 10 (step S2). At the same time, the DL file is also transferred to the N-Memory server 5 (step S3). The N-Memory server 5 receives the DL file and stores it in the HDD 18 together with the file ID and page information (step S4). And
When the N-Memory server 5 finishes storing the DL file, it returns an OK Ack to the printer 3 (step S5).

In the printer 3, the expansion control unit 12 expands the DL file as a bit map in the page memory 11, checks the Ack from the N-Memory server 5,
The engine output is instructed (step S6). During output,
The output control unit 13 monitors an error state from the engine 7 and the finisher 4 (Step S7).

Then, it is determined whether or not an error has occurred (step S8). If an error has occurred in the engine 7 or the finisher 4, error processing is performed (step S8).
9). Also, if output is normal without error, DL
Increment the page counter by one (step S1)
0).

Then, it is determined whether or not the DL file is the last page (step S11). If the DL page is not the last page, the process returns to step S2 to output the next and subsequent pages. Also, when the output completion of the last page is confirmed, N-
It designates the file ID to the memory server 5 and instructs the memory server 5 to delete the DL file (step S12). As a result, the N-Memory server 5 deletes the corresponding DL file from the HDD 18 (step S13), and returns a completion notification to the printer 3 (step S14). The printer 3 confirms the completion notification from the N-Memory server 5 and ends (step S15).

Next, the error processing in step S9 will be described in detail with reference to FIGS.

When an error occurs, if data is being received, the printer 3 instructs the operation control device 2 or the server to temporarily suspend the page being processed in the file being transmitted after the page currently being processed ( Step S16). Upon detecting this signal, the operation control device 2 or the server temporarily suspends the transmission (step S17).

After that, the printer 3 continues to transfer the DL file to the N-Memory server 5 up to the page currently being processed (step S18), and notifies the N-Memory server 5 that an error has occurred (step S19). Next, the contents of the current output page memory 11 are cleared (step S20), and the engine 7 or the finisher 4 is cleared.
Monitor and obtain error information from the server (step S2)
1). Then, it is determined whether the user has removed the error state by removing the paper from the printer 3 or the finisher (step S22). If the error state has not been released, the timer from the start of the error occurrence is checked and a certain time has elapsed. It is determined whether or not it has been performed (step S23). If the predetermined time has not elapsed in step S23, the process returns to step S21 again to obtain error information again.
If it is determined in step S23 that the predetermined time has elapsed, a message indicating that output was not possible due to timeout is displayed on the printer panel, and the process ends (step S24). In this case, the user removes the error condition and gives an output instruction from the operation control device 2 again.

When the error state is released in step S22, the printer 3 checks the discharge counter 17 of the finisher 4 (step S25). Then, the printer 3 obtains the discharge counter value, and the printer 3
The recovery server 5 requests the memory server 5 to transmit the DL file of the discharge counter + 1 page in order to recover the image (step S26). As a result, the N-Memory
The server 5 searches for the DL file of the corresponding page (step S27), and transmits the DL file to the printer 3 (step S28).

The printer 3 converts the received DL file
It is stored in the L memory 10 (step S29). The development control unit 12 develops the DL file into a bitmap, stores it in the page memory 11, and activates the engine output after developing one page (step S30). After the start, the DL page counter is compared with the discharge counter value (step S3).
1). If the discharge counter value is small, the error recovery output needs to be continuously performed.
Returning to step 25, the output from the N-Memory server 5 is continued.

When the discharge counter value becomes equal to the DL page counter value, an end notification is given as NM as recovery end.
It is issued to the memory server 5 (step S32).
Thereby, the N-Memory server 5 prepares for receiving the DL file again (step S33). Then, the printer 3 ends the error processing routine (step S3).
4) Return to step S10.

As described above, according to the first embodiment of the present invention, the DL file stored in the N-Memory server 5 in parallel with the data output is output to the next page of the discharge sheet count when a printer error occurs. Since the data is read back from the computer to the printer, error recovery can be reliably performed without resending data from the computer device.

(Embodiment 2) FIG. 7 is an explanatory diagram showing a configuration of a network printer system according to Embodiment 2 of the present invention, and FIG. 8 is a block diagram showing a hardware configuration of the network printer system according to Embodiment 2 of the present invention. FIG. 9 is a block diagram showing a software configuration of the network printer system according to the second embodiment of the present invention.
FIGS. 0 and 11 are flow charts showing a normal operation of the network printer system according to the second embodiment of the present invention, and FIGS. 12 and 13 are flow charts showing an error operation of the network printer system according to the second embodiment of the present invention. .

As shown in FIG. 7, Embodiment 2 of the present invention
In the network printer system of FIG.
A memory server (memory server) 5 is connected to the LAN 1 so as to be communicable with each other.

Then, a file whose output is instructed by application software or the like on the operation control device 2 connected to the same LAN 1 is transmitted to the printer 3 via a server (not shown), and the developed data is transmitted to the N-Memory. The data is stored in the server 5 and output.

Here, the printer 3 and the N-Memory
The y server 5 has a configuration as shown in FIG.

That is, the printer 3 comprises a controller 6 for developing data received from the network into a bitmap, and an engine 7 for outputting the developed bitmap. The controller 6 includes an input unit 8 that receives an output file from the operation control device 2 from the LAN 1 and a printer that outputs input data to a printer intermediate language DL.
Interpretation control unit 9 for converting to a file, expansion control unit 12 for expanding a DL file to a bitmap, band memory 101 for storing a DL file and expanded bitmap data, and bitmap data in band memory 101 to an engine An output control unit 13 for outputting, and an N-M for inputting / outputting a DL file to / from the N-Memory server 5
and an memory input / output unit (memory data input / output unit) 14. The engine 7 includes a jam detector 15 for detecting a paper jam of the printer, a toner empty detector 16 for detecting a toner shortage, and a discharge counter 17 for counting the number of discharged sheets.

Further, the N-Memory server 5 has the LA
A network input / output unit 19 connected to N1 for inputting / outputting a DL file, and an H for storing the received DL file;
The DD 18 and the necessary D
An N-Memory control unit 20 controls reading and writing of the L file.

As in the first embodiment, N-Mem
It is desirable that the ory server 5 be realized by a PC (personal computer) in terms of cost.

In this embodiment, an inexpensive printer is assumed. For example, an ink jet printer or the like has a low body cost and does not have a page memory or the like. In this case, a band memory system is generally used, which has only a memory for a fixed width of a page and develops an image in units of this width.

FIG. 9 shows the printer 3 and the N-Memory
3 shows a software configuration of the server 5.

As shown in the figure, the control software of the printer 3 operates on an RTOS (real-time OS) 23, and has a Main task 29 for managing various tasks at the top. Then, a DL file is stored in the N-Memory server 5 one level below the Main task 29, and the second and subsequent copies are used to re-output and use this data to manage the Mopy output which shortens the output time. And a task 28 for controlling other printer operations. These tasks are respectively performed by the N-Memory via the built-in memory 21 built in the printer 3 and the LAN 1.
It is necessary to be able to use the external memory using the server without being conscious of it. The memory management function 26 manages these controls.

Below the memory management function 26, a memory upper function 24 for handling the built-in memory,
There is an N-Memory management function 25 for handling an external memory of the N-Memory server 5, and a Network driver 22 for controlling a network.

Here, the N-Memory server 5 is a PC
Etc., and in this case, De
The N-Memory server application 32 runs on the sktopOS 31 and has the built-in memory 30 and the HDD 1
8 is exchanged with the printer 3 via the network driver 22.

In the network printer system configured as described above, when an error occurs, the N-Memory
The operation of performing error recovery using the DL file of the y server 5 will be described with reference to FIGS. 10, 11, 12, and 13. FIG.

The user instructs the operation control device 2 to output data of an application or the like to the printer 3 and performs file transfer (step S41). As a result, the output file is sent to the printer 3 via the server (not shown), and the printer 3 first sets the DL page counter to 0.
After that, the interpretation control unit 9 sequentially converts the received file into a DL file and expands it into the band memory 101 (step S42). At the same time, download the DL file to N-Mem
It is also transferred to the org server 5 (step S43). N-
The memory server 5 stores the DL file in the HDD 18 together with the received file ID, page information, and band information (step S44). And N-Memor
When the y server 5 finishes saving the DL file, it is OK Ac
k is returned to the printer 3 (step S45).

In the printer 3, the development control unit 12 develops the DL file as a bitmap in the band memory 101 again, confirms Ack from the N-Memory server 5, and issues an output instruction of the engine 7 (step S4).
6). During output, the output control unit 13 monitors an error state from the engine 7 (step S47).

Then, it is determined whether or not an error has occurred (step S48). If an error has occurred in the engine 7, error processing is performed (step S49). If the output processing is performed normally without error, the DL band counter is counted up by 1 (step S50).

Then, it is determined whether or not the DL file is the last band (step S51). If the DL file is not the last band, the process returns to step S42 to continuously output the next band and thereafter. When the output of the last band is reached, the DL page counter is counted up by one (step S5).
2).

It is determined whether or not the DL file is the last page (step S53). If it is not the last page, the process returns to step S42 to output the next page and subsequent pages. If it is confirmed that the output of the last page has been completed, the N-Memory
Instruct the server 5 to delete the DL file by designating the file ID (step S54). This gives N
-The Memory server 5 stores the corresponding DL file in H
The file is deleted from the DD 18 (step S55), and a completion notification is returned to the printer 3 (step S56). The printer 3 confirms the completion notification from the N-Memory server 5 and ends (step S57).

Next, the error processing in step S49 will be described in detail with reference to FIGS.

When an error occurs, if data is being received, the printer 3 instructs the operation control device 2 or the server to temporarily suspend the pages following the page currently being processed in the file being transmitted (step S1). S58).
Upon detecting this signal, the operation control device 2 or the server temporarily suspends the transmission (step S59).

After that, the printer 3 continues to transfer the DL file to the N-Memory server 5 up to the page currently being processed (step S60), and notifies the N-Memory server 5 that an error has occurred (step S61). Next, the current contents of the band memory 101 are cleared (step S62), and error information from the engine 7 is monitored and obtained (step S63). Then, it is determined whether or not the error state has been cleared by the user removing the paper in the printer 3 (step S64). If the error state has not been cleared, the timer from the start of the error occurrence is checked to determine whether a predetermined time has elapsed. A determination is made (step S65). If the predetermined time has not elapsed in step S65, the process returns to step S63 again to obtain error information again. If it is determined in step S65 that the predetermined time has elapsed, a message indicating that output was not possible due to timeout is displayed on the printer panel, and the process ends (step S66). In this case, the user removes the error condition and gives an output instruction from the operation control device 2 again.

When the error state is released in step S64, the printer 3 checks the discharge counter 17 of the engine 7 (step S67). And
The printer 3 obtains the discharge counter value and sets the N-Memo.
The recovery server 5 requests the ry server 5 to transmit the DL file of the discharge counter plus the first page (step S68). Thus, the N-Memory server 5 searches for the DL file of the corresponding page (step S69), and transmits the DL file of the corresponding page to the printer 3 (step S70). At this time, the first band to the last band of the corresponding page are sequentially transmitted while watching the flow control stop signal from the printer 3.

The printer 3 stores the received DL file in the band memory 101 (Step S71). The expansion control unit 12 expands the DL file into a bitmap, puts it in a free area of the same band memory 101, and starts the engine output as needed (step S72). At this time, as soon as the band memory 101 becomes available, the N-Memory server 5
, And sequentially receive the DL files sent from. Then, when the band memory 101 becomes full, a stop signal of the flow control is issued, and when the output is made empty, the stop signal is cleared. As described above, the printer 3 uses the N-Memory
The output is performed in accordance with the engine speed while arbitrating the flow with the server 5.

The DL page counter and the discharge counter value are compared each time one page is discharged (step S73). And
If the discharge counter value is small, it is necessary to continue the error recovery output.
Output from the Memory server 5 is continued.

When the discharge counter value becomes equal to the DL page counter value, an end notification is issued to the N-Memory server 5 as the end of error recovery (step S7).
4). As a result, the N-Memory server 5 returns to D
The reception preparation of the L file is performed (step S75). Then, the printer 3 ends the error processing routine (Step S76), and returns to Step S50.

As described above, according to the second embodiment of the present invention, the DL file stored in the N-Memory server 5 in parallel with the data output is output to the next page of the discharge sheet count when a printer error occurs. N from the first band
-Read back to the printer again while performing the flow arbitration with the Memory server 5, so that even an inexpensive printer without a page memory such as an ink jet printer can reliably perform error recovery and perform the engine arbitration by the flow arbitration. It is possible to output at a speed that matches the speed.

In the first embodiment, an example in which the finisher 4 is connected has been described. However, there is no problem in operation whether or not the finisher 4 is provided. However, when the finisher 4 is not connected, it is necessary to use the discharge counter 17 of the engine 7.

In the description of the flowchart of the first embodiment with reference to FIG. 4, the DL file of the N-Memory server 5 is deleted after the output is completed. Alternatively, the second and subsequent copies may be output using this DL file as Mopy output.

In the second embodiment, one page being processed at the time of an error is performed on a page-by-page basis, and the error processing is performed after the entire band is put into the N-Memory server 5 and then the error processing is performed. N- to the band
It may be inserted into the memory server 5 and immediately stopped, and recovery may be performed in band units based on the DL page counter and DL band counter information. In this way, although the processing is somewhat complicated at the time of error recovery, there is a merit that the error can be stopped quickly.

In the embodiment of the present invention, N-Mem
ory server 5 mainly PC (personal computer)
Has been described as an example, but this is a general-purpose computer and workstation, as well as memory and HDD
May be realized by another printer having a built-in printer.

The present invention can adopt various embodiments as long as the gist of the present invention is not impaired.

[0070]

As described above, according to the present invention, the printer intermediate language stored in the memory server in parallel with the data output is read back from the undischarged page to the printer when a printer error occurs. Therefore, an effective effect that error recovery can be reliably performed without retransmitting data from the computer device is obtained.

Further, according to the present invention, the printer intermediate language stored in the memory server in parallel with the data output is re-executed while performing flow arbitration with the memory server from the first band of the undischarged page when a printer error occurs. Since it is read back to the printer, even if it is an inexpensive printer without page memory such as an ink jet printer, error recovery can be performed reliably and flow arbitration can output at a speed matching the engine speed Is obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of a network printer system according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a hardware configuration of the network printer system according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a software configuration of the network printer system according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing a normal operation of the network printer system according to the first embodiment of the present invention.

FIG. 5 is a flowchart showing an operation of the network printer system according to the first embodiment of the present invention when an error occurs;

FIG. 6 is a flowchart showing an operation of the network printer system according to the first embodiment of the present invention when an error occurs;

FIG. 7 is an explanatory diagram showing a configuration of a network printer system according to a second embodiment of the present invention.

FIG. 8 is a block diagram illustrating a hardware configuration of a network printer system according to a second embodiment of the present invention.

FIG. 9 is a block diagram illustrating a software configuration of a network printer system according to a second embodiment of the present invention.

FIG. 10 is a flowchart showing a normal operation of the network printer system according to the second embodiment of the present invention.

FIG. 11 is a flowchart showing a normal operation of the network printer system according to the second embodiment of the present invention.

FIG. 12 is a flowchart illustrating an operation of the network printer system according to the second embodiment of the present invention when an error occurs;

FIG. 13 is a flowchart illustrating an operation of the network printer system according to the second embodiment of the present invention when an error occurs;

[Explanation of symbols]

3 Printer 5 N-Memory server (memory server) 6 Controller 7 Engine 8 Input unit 9 Interpretation control unit 11 Page memory 12 Expansion control unit 14 N-Memory input / output unit (memory data input / output unit) 15 Jam detection unit 16 Toner empty Detecting unit 17 Discharge counter 101 Band memory

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C061 AP01 HH01 HJ06 HK15 HN05 HN24 HQ17 HV09 HV14 HV36 HV58 2C087 AB06 BC02 BC05 BC07 BD01 BD12 BD13 BD46 CB05 DA10 5B021 AA02 EE01 9A001 BB04 BZ03 HJ34 KK

Claims (2)

[Claims] 1. A network printer system comprising a network-connected printer and a memory server, the printer comprising: an input unit for receiving data from the network; an interpretation control unit for converting the data into a printer intermediate language; A controller having a development control unit that develops the printer intermediate language into a bitmap and stores it in a page memory, and a memory data input / output unit that transmits and receives the printer intermediate language to and from the memory server via the network. It comprises a jam detector for detecting a paper jam, a toner empty detector for detecting a toner shortage, and an engine having a discharge counter for counting the number of discharged sheets, and is stored in the memory server in parallel with the output of the data. Printer intermediate language A network printer system wherein an undischarged page is read back to the printer when an error occurs. 2. A network printer system comprising a network-connected printer and a memory server, the printer comprising: an input unit for receiving data from the network; an interpretation control unit for converting the data into a printer intermediate language; A controller having a development control unit that develops the printer intermediate language into a bitmap and stores it in a band memory, and a memory data input / output unit that transmits and receives the printer intermediate language to and from the memory server via the network. It comprises a jam detector for detecting a paper jam, a toner empty detector for detecting a toner shortage, and an engine having a discharge counter for counting the number of discharged sheets, and is stored in the memory server in parallel with the output of the data. Printer intermediate language A network printer system wherein, when an error occurs, read back to the printer from the first band of the undischarged page while performing flow arbitration with the memory server.