JPS63163920A - Printing device - Google Patents

Abstract

PURPOSE:To restart printing without retransmitting data from a host computer by utilizing the printed data accumulated in a printing device when printing non-guarantee errors such as paper jam, etc., occur. CONSTITUTION:When the errors such as paper jam, etc., occur, a printing control part 9 detects error information and after interrupting the processes of a first control part 5 and a second control part 8, it transfers the error information detected from a storage device 7 to a non-guarantee page number computing part 10. The computing part 10 refers to a non-guarantee page number storage table 11 and obtains the number of non-guarantee pages from the error information so as to transfer to a printing control part 9. The first control part 5 refers to a page head pointer storage part 12 and obtains a page head pointer ahead of the page head pointer, which is being printed, by the number of non-guarantee pages so as to set it as a printing restart page. As a result in case of outputting the printed data from a host, printing is possible from the head of the printing non-guarantee page.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention enables a printing device to print data for a non-guaranteed number of pages without having to resend it from a host φ computer when a non-guaranteed printing error such as a paper jam occurs. The present invention relates to a printing device for printing.

[Conventional technology]

FIG. 4 is a block diagram of a conventional printing apparatus disclosed in, for example, Japanese Unexamined Patent Publication No. 57-207940.
1) is a printing device; (2) is a printing device (a host computer that sends print data to 11 and monitors the status of the printing device il+; 13) l'! Host computer (2)
An interface for receiving print data from and notifying the status of the printing device +l+, (41 is a first page storage device that stores at least one page of received data, (6) is a printing device for the first page storage device (4) A first control unit that manages data and instructs the interface (31) whether or not to receive the next data; (6) is a second page in which one page of print data is transferred from the first storage device (4) and stored; Storage device, ()) is the second
A recording device that prints one page worth of print data stored in the page storage device (6), (8) prints one page worth of print data stored in the second storage device (6) to the recording device f+71. A second control unit (91 manages the entire printing device il+,
It is a print control unit that receives data from the host computer (2), checks the print results from the recording device (7), etc., and instructs the first control unit (6) and the second control unit to operate. .

Next, the operation will be explained.

Print data for each line is output from the host computer (2), and is sent to the first control unit (+1) through the interface (3).
In synchronization with the receiver, the received print data is stored in the first page storage device (4). If you receive one page of print data, it will be 8.
The g1 control unit (5) collectively transfers the print data in the first page storage device ftT41 to the second page storage device (6).

The second control unit (8) outputs the print data in the second page storage device (6) to the recording device (7), and the recording device (7) generates a necessary image pattern signal from the print data for each line and prints the data. Record on paper. When the recording device (7) finishes printing one page, it notifies the print control unit (9) of print completion information.

The first control unit (5) and the second control unit (8) execute processing asynchronously, and from the @1 page storage device *(<) to the second negative storage device (6
Only when transferring print data to page 1, the second control unit (8) transfers the print data in the second page storage device (6) to synchronize under the control of the print control unit (9) based on the print end notification. When outputting to the recording device, the first control section (5)
If the page storage device (4) has room to receive print data, it can receive print data from the host computer (2) in synchronization with the interface (3).

When a printing non-guaranteed error such as a paper jam occurs in the recording device (7), the error information is detected by the print control unit (91),
The print control section (9) includes a first control section (6) and a second control section (8).
), the interface (3) is activated via the first control unit (5) and the error information is notified to the host computer (2). At this time, in order to return the print data in the first page storage device (4) and the first storage device t+61 to the state before the error occurred, the host computer (2)
When the operator clears the cause of the error in the printing device (11) based on the error information notified to the host computer (2) and print data is output again from the host computer (2), printing starts from the top of the page where the error occurred.

[Problem that the invention seeks to solve]

Conventional printing devices are configured as described above, so
In electrophotographic printing devices where the recording device performs exposure, development, transfer, and fixing, when a printing non-guaranteed error occurs, the paper transport distance from transfer to fixation is long, and the print data that has already been transferred may be unfixed or Since a jam may occur, it is necessary to reprint the print data several minutes before the print non-guaranteed error occurred, and printing will not be possible unless the host computer resends the print data from the print non-guaranteed page. It was not possible to print from the beginning of a non-guaranteed page.

This invention was made in order to solve the above-mentioned problems, and when a non-guaranteed printing error occurs, the number of non-guaranteed pages is calculated, and the pointer of the print data stored in the printing device is set to the number of non-guaranteed pages. The object of the present invention is to provide a printing device that reprints a non-printable page from the beginning after reversing it by a certain amount.

[Means for solving problems]

When the printing device f according to the present invention detects a printing non-guaranteed error, the printing device f calculates the number of pages from the printed page (transferring) at the time of error occurrence to the non-guaranteed page that has been printed (transferred) based on the error information. Store the non-guaranteed page*n output and non-guaranteed page count storage table to find the number of non-guaranteed pages, and the page start pointer in the @1 page storage device for at least the maximum number of non-guaranteed pages to find the page start pointer of the non-guaranteed page. A page top pointer storage section is configured on the printing device.

[Effect]

The printing device according to the present invention has the non-guaranteed page number calculation section, the non-guaranteed page number storage table, and the page top pointer storage section on the printing device, so that print data for the maximum number of non-guaranteed pages to be printed is stored in the first page memory. By leaving it in the device, when a printing non-guaranteed error occurs, after calculating the number of non-guaranteed pages, the page top pointer that is the number of non-guaranteed pages before the page top pointer storage is calculated, and from the printing non-guaranteed pages, the host computer Printing can be resumed without retransmitting print data from the printer.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

In Figure 1, flol is a non-guaranteed page number calculation unit that calculates the number of non-guaranteed members when a non-guaranteed error occurs, and (!l) is the non-guaranteed page number that stores the content of the non-guaranteed error and the corresponding number of non-guaranteed pages. The storage table (1z) is a page head pointer storage section that stores page head pointers for the maximum number of non-printable pages that are being printed and have been printed among the print data in the first storage device (4).

In the figure, (1) to (91) indicate the same items as in FIG. Department (
5) is to leave printing data for the maximum number of non-printing guaranteed pages in the first page storage device (41), and to store the page top pointers in the page top pointer storage section Q2. do.

FIG. 2 is a diagram showing an example of the configuration of the paper conveyance system of the recording device (7) on the printing device +11, where (101) is a continuous paper supply unit that supplies continuous paper, and (102) is a continuous paper supply unit that scoops continuous paper. Continuous paper stack section, (103) is a photoelectric drum,
(104) is an exposure section that exposes the image pattern on the photoelectric drum (103), (105) is a development section that attaches printing ink (toner, etc.) to the exposed area on the photoelectric drum (103), and (106) is A transfer section (107) is a transfer section that transfers the printing ink from the photoelectric drum (103) onto the paper, and a fixing section (107) that fixes the printing ink on the paper. In the figure, A to F are printing non-guaranteed error detection units, and n=n+5 indicates the number of pages of paper.

FIG. 3 shows an example of a non-guaranteed page number storage table that stores the number of non-guaranteed members.

Next, the operation will be explained.

The printing operation from the output of print data by the host computer (2) to the printout by the recording device 1 (7) is the same as in the conventional example. However, the first controller (5)
Printed print data for the maximum number of pages with printing non-guaranteed remains in the page storage device (4), and their page head pointers are updated and stored in the page head pointer storage unit (121) for each printed page.

If a printing non-guaranteed error such as a paper jam occurs in the recording device (7), the error information is detected by the print control unit (9), and the print control unit (9) is activated! After interrupting the processing of the second control unit (8), the first control unit +51 transfers the error information detected from the recording device (7) to the non-guaranteed page count calculation unit (101).The non-guaranteed page count calculation unit (!α is the non-guaranteed negative number storage table (11
), find the corresponding non-guaranteed negative number from the error information, and transfer it to the print control unit (9).

The print control unit (9) transfers the non-guaranteed number of pages to the first control unit (6), and instructs the second control unit (8) to clear the print data in the second page storage device (61). section (61 refers to the page start pointer storage section Q21, finds the page start pointer that is the number of non-guaranteed pages before the page start pointer being printed, and sets it as the Indo restart page.

Next, as in the conventional example, error information is notified to the host computer (2), and the operator
When the host computer (2) outputs print data again after the cause of the error has been resolved, printing can be performed from the beginning of the non-printable page.

Next, an example of calculating the number of non-guaranteed pages when a printing non-guaranteed error occurs will be described with reference to FIGS. 2 and 3.

When an error is detected by the non-guaranteed error detection units A to F in Figure 2, if the page of the paper being printed is n+2, for example, if a paper jam occurs at the part ^, then the number of pages including the page being printed is n+2.
Four pages from +2 to n+5 become the non-guaranteed number of pages, and if a transfer error occurs in the portion E, one page, page 1+2, which is being printed becomes the non-guaranteed number of pages. (For non-guaranteed errors in the paper conveyance system, such as paper jams, the paper cannot be conveyed, so the unfixed pages become the non-guaranteed number of pages.) First, if a paper jam occurs in section A, the recording device i
t fil creates error information, stops printing, and notifies the print control unit (9). The print control unit (91 transfers error information to the non-guaranteed page number calculation unit (lα).

Based on the error information, the non-guaranteed page number calculation unit (lO) determines that the non-guaranteed negative number is 4 pages from the non-guaranteed page number storage table (11), since the error is detected in part A. Note that the non-guaranteed number of pages in Figure 3 also includes negative numbers during printing, so the print data negative numbers in the printing device fil include:
2nd page storage device (a negative number of 61 is not added. In the example of FIG. 2, the maximum number of non-printable pages is 4 pages.

In the above embodiment, the 81!1 page storage device (4) and the second page storage device (6) are provided separately for storing print data, but only the first page storage device (4) is used to store print data. The page and the page being output may be managed using a pointer or the like.

In addition, in the Kami Kiei Example, the number of printed non-guaranteed members was calculated based on the printed page being transferred at the time of error detection, but the transferred page or the printed page before transfer (printed Data) may be used as a reference, and the recording device (7) may also be used as a reference.
Other methods that can calculate the number of printing non-guaranteed members based on error information from the above may also be used.

〔Effect of the invention〕

As described above, according to the present invention, since the non-guaranteed negative number calculation section, the non-guaranteed page number storage table, and the page top pointer storage section are configured on the printing device, when a printing non-guaranteed error occurs, the host computer can print This has the effect that printing can be restarted from the print page (print data) for which printing is not guaranteed without resending the data.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a printing device according to an embodiment of the present invention;
FIG. 2 is a configuration diagram of a paper conveyance system according to an embodiment of the present invention, FIG. 3 is a format diagram of a non-guaranteed true number storage table according to an embodiment of this invention, and FIG. 4 is a configuration diagram of a conventional printing device. shows. In the figure, (11 is a printing device, (21 is a host computer, (3) is an interface, (4) is a first page storage device, (5) is a first control unit, and (6) is a second page storage device. , (7) is the recording device, (8) is the second control unit, (9) is the print control unit, (I0) is the non-guaranteed true number calculation unit, lt+ is the non-guaranteed page number storage table, (I21 is the top of the page This is the pointer storage section. In addition, the same reference numerals in the figures indicate the same or equivalent parts. To the substitute Masuo Oiwa Figure 1 Figure 2 Figure 3 Figure 4

Claims (3)

[Claims] (1) An interface that receives print data from the host computer or sends information inside the printing device to the host computer, and a first interface that stores the received print data.
a page storage device, a first control unit that controls transmission and reception of data from the host computer and print data, a second page storage device that stores print data for one page, and converts the print data into an image pattern and prints it. a recording device that controls printing, a second control unit that controls printing, and controls the first control unit and the second control unit to print the next page or perform error processing based on print completion information or error information from the recording device. a print control unit that calculates the number of non-guaranteed pages to be printed in the event of a non-guaranteed printing error based on error information from the recording device; and a page head pointer storage section for storing a page head pointer in the first page storage device in order to reprint the page. (2) The amount of print data stored in the first page storage device is greater than or equal to the maximum number of non-print guaranteed pages + 1, and the print data for the maximum number of non-print guaranteed pages is retained even after printing is completed. A printing device according to claim 1. (3) The page start pointer stored in the page start pointer storage section is characterized by having at least the maximum number of printing non-guaranteed pages of page start pointers that are currently being printed and have been printed before the page start pointer of the print data that is being printed. A printing apparatus according to claim 1.