JPH08216484A - Method and apparatus for recovering jam of printer - Google Patents

Abstract

PURPOSE: To shorten the time up to restart of printing and to conserve resources by determining whether a jam is eliminated or not after the jam occurs on the way of printing, skipping to read the page immediately before the occurrence of the jam at the time of eliminating, receiving data to be printed from next page, and restarting the printing. CONSTITUTION: When the page number of print is designated from a host computer, a data receiver 1 receives the content, a printing mechanism 8 prints it via a printer controller 4 and a mechanism controller 7. A page counter 2 counts the number of printed pages, and the number-of-pages memory 3 stores the number of the pages. If a jam occurs during printing, whether the jam is eliminated or not is decided. If the jam is eliminated, the print is restarted. At this time, the page to be restarted is compared with the page started from the initial, and if they are the same, it is returned to the initial printing page, of if they are not the same, the data is received from the page where the jam occurs, and the print is restarted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jam recovery method and apparatus for a printer, and more particularly, after a jam occurs during printing, the printer operation is controlled when printing is resumed and the printing is resumed after the jam occurs. The present invention relates to a jam recovery method and device.

[0002]

2. Description of the Related Art FIG. 3 shows a basic flowchart of a conventional jam recovery method. The configuration necessary for the related art is also shown in the configuration shown in FIG. 1 for carrying out the present invention. Generally, an operator selects print contents while viewing a print menu displayed on the display of a personal computer, and gives an instruction to start printing via a keyboard. The printer side receives the print data (S
21), printing is started according to the print menu by the print mechanism via the built-in printer controller (S).
22). As the printing progresses, the printer controller constantly monitors the detection signal of the jam sensor and determines whether or not a jam has occurred (S23). When a jam occurs during printing (YES), the operator removes the jam. The printer controller determines whether the jam has been resolved (S
24), if it is canceled during printing (YES),
Returning to step S21, printing is restarted from the beginning. If no jam has occurred in step S23 (NO), printing in step S22 is continued.

As described above, when printing from the host computer to the printer, it is often impossible for the host computer to know how many pages have been printed at the present time. Therefore, when a jam occurs during printing in a normal application program, as described in the above steps, after the jam condition of the printer is cleared by the operator, the data is reprinted from the beginning by the instruction of the printer controller. It will be.

[0004]

By the way, when the contents of a floppy disk are printed with a display and a keyboard such as a personal computer, printing is stopped at the time of occurrence of a jam and the jam is resolved. After doing, you can print from the page after the jam occurs while looking at the display.

However, particularly in the case of printing the received data by the facsimile, the data is retransmitted from the sending facsimile, or the received data in the receiving memory built in the receiving facsimile is read again and printed. I often fix it. As described above, after the printer recovers from the jammed state, in order to restart the printing from the first page, the page that has been normally printed before is printed again, which wastes time and resources. There was a problem.

In order to solve the above-mentioned problem, an object of the present invention is to restart printing after the occurrence of a jam, without printing again until the page on which the data transmitted from the host computer is normally printed on the printer side. In this way, it is possible to provide a jam recovery method that shortens the time required to restart printing and saves resources.

[0007]

According to the present invention, in the jam recovery method of the printer, when the data to be printed is received from the host computer, the printing mechanism starts the printing, and at the same time when the printing is started, the counting means is started. The number of pages normally printed is counted by the above, the counted number of pages is stored in the storage unit, and the printer control unit determines whether or not the printing is completed for each page.

When a jam occurs during printing, the printer control means determines whether the jam is resolved,
When the problem is resolved, the printer control unit refers to the number of pages stored in the storage unit, skips the pages up to immediately before the occurrence of the jam, receives the data to be printed from the next page, and restarts the printing. It is characterized by doing so.

When a jam occurs again after the jam is resolved, the page just before the occurrence of the jam is skipped, data to be printed is received from the next page, printing is restarted, and this step is repeated. Be done. The present invention is also a printing apparatus for receiving print data from a host computer and performing printing, the data receiving unit receiving data to be printed from the host computer, and printing with the print data from the data receiving unit. Simultaneously with the start, a counting unit that counts pages that are normally printed, a storage unit that stores the number of pages counted by the counting unit, and determines whether or not printing is normally completed for each page, When a jam occurs during printing, it is determined whether or not the jam is resolved, and when it is resolved, the normal page number stored in the storage unit is referred to, and the normal page number immediately before the occurrence of the jam is skipped, A printer control that receives the data to be printed from the page immediately after the jam and instructs the host computer to restart printing. Characterized by comprising a means.

Further, when the jam occurs again after the jam is resolved, the printer control means skips the page until immediately before the jam again, receives the data to be printed from the next page, and restarts the printing. Instruct them to do so.

[0011]

1 is a block diagram of an embodiment of an apparatus for carrying out a jam recovery method according to the present invention. In the figure, the structure surrounded by a dotted line is a main part structure for carrying out the present invention.
A data receiving unit 1 receives data transmitted from the host computer 20. A page counter 2 counts the number of printed pages and detects the end of printing. A page number storage unit 3 is a memory that holds the number of pages counted by the page counter 2. A printer controller 4 controls the entire printer, such as determining whether to print or discard data based on the jam detection signal from the jam sensor 9 and the number of print pages held in the page number storage unit 3. It is something to do.

Reference numeral 5 denotes a drawing unit, which is a host computer 20.
Data is stored in the page memory 6 as an image to be printed. A page memory 6 temporarily stores print pages. A mechanism controller 7 controls the operation of the print mechanism 8 and notifies the printer controller of the operating state of the print mechanism. A print mechanism 8 prints on paper under the control of the mechanism controller 7. A jam sensor 9 detects a jam that occurs during printing and notifies the mechanism controller 7 of the jam. 10 is a data transmission unit,
In accordance with the notification from the printer controller 4, the host computer 20 is notified of the printer status.

The host computer 20 is, for example, built in a facsimile machine or a personal computer. Therefore, in the case of a personal computer, the data in the data receiving section 1 on the printer side is the print menu displayed on the display. When the operator confirms the print menu, the print instruction is transmitted to the printer side via the keyboard. As described above, in the case of a personal computer, since the page is restarted from the page where the jam has occurred while looking at the display, it can be determined that the present invention is rarely applied.

On the other hand, in the case of a facsimile, if a jam occurs, if the receiving facsimile has a built-in memory for the received data, it is read again from the memory. The data will be retransmitted from the sending facsimile. FIG. 2 is a basic flowchart of the jam recovery method according to the present invention. The numbers in parentheses in the figure correspond to the respective component numbers in the configuration of FIG. That is, the device in which the step is performed is shown.

First, the page number for printing is designated from the host computer of the transmitting facsimile or from the built-in memory of the receiving facsimile (S1). The data receiving unit 1 receives this content (S2), and prints by the print mechanism 8 via the printer controller 4 and the mechanism controller 7 (S3). The page counter 2 counts the number of printed pages and determines whether each page is finished (S
4), the page number storage unit 3 stores the number of pages (S
5).

Next, when a jam is detected by the jam sensor 9 during printing (S6), this information is sent to the printer controller 4 via the mechanism controller 7.
When the operator attempts to eliminate the jam, the jam controller 4 determines whether the jam has been resolved (S
7). If it is resolved (YES), printing is restarted (S8). Here, the printer controller 4 compares the restarted page (P ') with the page (P) where printing was originally started, and determines whether they are the same (S9). If they are the same (YES), the original print page is returned, and if they are not the same (NO), data is received from the page (P ') in which the jam has occurred (S10), or is read from the memory and printing is restarted. .

Steps after printing is restarted (S1
1, S12) is the same as steps S4 and S5 described above, and it is determined whether a jam occurs in the printer controller 4 via the jam sensor 9 and the mechanism controller 7 (S).
6) It is determined whether the jam has been resolved (S7). As is clear from the steps described above, in the present invention,
The printer counts the number of pages that have been printed at present (page counter 2) and holds the value (page number storage unit 3). When the jam condition of the printer is resolved,
Printing is restarted, and it is determined whether to print data according to the held value (S9).

That is, at the time of normal printing in which no jam occurs, the number of pages currently printed while printing is counted and the value is held. Then, when a jam occurs and is resolved, data is retransmitted from the host computer, but in the present invention, the number of pages is counted without printing before the jam occurs, that is, up to the page held in the normal state. Only do. After that, normal printing is performed, and printing and counting of the number of pages are performed.

[0019]

As described above, according to the present invention,
If a jam occurs during printing, after clearing the jam condition, the data retransmitted from the host computer is skipped to just before the page where the jam occurred, and then printing is restarted to open the same page multiple times. Since there is no need to print, there is the effect of significantly reducing the loss of time and resources.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of an apparatus to which a jam recovery method according to the present invention is applied.

FIG. 2 is a flowchart of a jam recovery method according to the present invention.

FIG. 3 is a flowchart of a conventional jam recovery method.

[Explanation of symbols]

 1 ... Data receiving unit 2 ... Page counter 3 ... Page number storage unit 4 ... Printer controller 5 ... Drawing unit 6 ... Page memory 7 ... Mechanism controller 8 ... Printing mechanism 9 ... Jam sensor 10 ... Data transmission unit 20 ... Host computer

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Claims (5)

[Claims] 1. A jam recovery method for a printer, wherein (a) printing is started by a printing mechanism when data to be printed is received from a host computer, and (b) normal printing is performed by a counting means at the same time as the start of printing. The pages are counted, (c) the counted number of pages is stored in the storage unit, (d) the printer control unit determines whether or not printing is completed for each page, and (e) a jam occurs during printing. When it occurs, the printer control unit determines whether or not the jam has been resolved. (F) When the jam has been resolved, the printer control unit refers to the number of pages stored in the storage unit, and immediately before the occurrence of the jam. Printer jam characterized by skipping pages, receiving data to be printed from the next page, and restarting printing Coverry method. 2. When a jam occurs again after the jam is resolved, the pages up to immediately before the occurrence of the jam are skipped,
The jam recovery method according to claim 1, wherein data to be printed is received from the next page and printing is restarted. 3. The jam according to claim 1, wherein the host computer is built in a facsimile and is retransmitted from a transmitting facsimile when a jam occurs or is reread from a receiving data memory in the receiving facsimile. Recovery method. 4. A printing apparatus for receiving print data from a host computer and performing printing, a data receiving unit for receiving data to be printed from the host computer, and a print start by the print data from the data receiving unit. At the same time, a counting unit that counts the pages that are normally printed, a storage unit that stores the number of pages counted by the counting unit, and whether or not the printing has normally completed for each page is determined. When a jam occurs, it is determined whether or not the jam is resolved. When the jam is resolved, the normal page number stored in the storage means is referred to, the normal page number immediately before the jam occurs is skipped, and the jam occurs. The printer control that receives the data to be printed from the page immediately after and instructs the host computer to restart printing. Printing apparatus characterized by comprising a means. 5. The printer control unit, when a jam occurs again after the jam is resolved, skips a page until immediately before the jam occurs, receives data to be printed from the next page, and restarts printing. The printing device according to claim 4, wherein the printing device is instructed to do so.