JPH11272434A - Picture forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute the cancel of the specific number of jobs by instructing the cancel of plural jobs. SOLUTION: A laser printer 1 is provided with a controller 2, operation panel 4, and printer engine 13. The operation panel 4 is provided with a number of cancel job designating key. Also, this is provided with a job end judging function, number of cancel job decrement function, and number of remaining cancel job judging function. Thus, the job cancel of the designated number of jobs can be automatically attained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a printer, a copying machine, a facsimile, etc., and more particularly, to an image forming apparatus having a function of canceling data during printing.

[0002]

2. Description of the Related Art Various image forming apparatuses have been proposed which receive coded print data sent from a host, convert the print data into figures and characters corresponding to the codes, and output the converted figures. In such an image forming apparatus, by using a predetermined job cancel instruction unit such as a switch while receiving print data of one print job,
A job cancel function for discarding data already stored in the image forming apparatus in the print job and discarding subsequent received data, and determining job end by a predetermined job end determination function, and terminating the data discard. Are known.

For example, Japanese Patent Laying-Open No. 5-77525 proposes a technique in which printing is canceled by key input and printing is resumed by key input again. Further, Japanese Unexamined Patent Publication No.
Japanese Patent Application Laid-Open No. 11396 discloses a technique for discarding data until a sheet ejection command is detected in order to minimize the output of meaningless disordered pages and to perform appropriate data cancellation processing without skipping the next job. Proposed.

[0004]

Any of the print job canceling functions proposed so far cancel the print job being output when the operation is executed. Other print jobs stored in the buffer and other print jobs stored in the host could not be canceled. Therefore, in order to cancel a useless print job that has been sent to the image forming apparatus by mistake, a situation may occur in which a predetermined operation is not actually canceled even if a predetermined operation is performed. In such a case, there is a problem that a later print job cannot be canceled.

Accordingly, it is an object of the present invention to provide an image forming apparatus capable of canceling a plurality of jobs by giving an instruction to cancel the jobs.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, an operation of a job cancel instructing unit is performed to delete data already stored in the apparatus in a print job receiving print data. An image forming apparatus having a job canceling function for performing discarding and subsequent discarding of received data and terminating data discarding upon completion of a job is provided with a cancel job number designating means for designating the number of jobs to be canceled. Has the function of executing the job cancellation for the number of jobs specified by (1).

[0007] To achieve the above object, the present invention provides a second aspect.
According to the invention described in the first aspect, when the number of jobs to be canceled is designated by the cancel job number designation means, the job end is determined by the job end determination function, and the cancel job is decremented by the cancel job number decrement function at the end of the job. The number is decremented by 1, and the number of remaining canceled jobs is determined by the remaining canceled job number determining function.

According to the present invention, there is provided a cancel job number designating means for designating the number of jobs to be canceled, and a job end determining function, a cancel job number decrement function, and a remaining cancel job number determining function. The job can be automatically canceled in minutes.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a hardware configuration of the laser printer. The printer 1 is connected to the host 3
And are connected by a network. The printer 1 includes a controller 2, an operation panel 4, and a printer engine 13.

In accordance with the control mode set at that time and the control code from the host 3, the controller 2
The print data from the host 3 is converted into video data,
A general term for a control mechanism that outputs data to the printer engine 13. The host I / F 5, program ROM 6, font R
OM7, panel I / F8, CPU9, RAM10, NV
-RAM 11, engine I / F 12, option RAM
14 is provided.

The host I / F 5 is an interface for control signals and data from the host 3 to the printer 1 and status signals from the printer 1 to the host 3. The program ROM 6 stores programs for processing data in the controller 2 and controlling peripheral modules. The font ROM 7 has various types of fonts used for printing. The panel I / F 8 is an interface for signals for switching the state, mode, font, and the like of the printer 1.

The CPU 9 reads data (print data, control data) from the host 3 according to the program ROM 6.
Process. The RAM 10 is a work memory for processing by the CPU 9, a buffer for managing data from the host 3 in page units and temporarily storing the data, and a bit for converting data stored in the buffer into an actual print pattern and storing video data. Used for map memory, etc.

The NV-RAM 11 is a non-volatile RAM for storing data to be stored even when the power is turned off. The engine I / F 12 is an interface for a control signal from the controller 2 to the printer engine 13 and a status signal from the printer 1 to the controller 2.

The operation panel 4 for transmitting and receiving signals to and from the controller 2 via the panel I / F 8 includes a display unit for displaying the status of the printer 1 and a switch unit for switching the mode, font, and the like of the printer 1. Similarly, the printer engine 13 creates and develops an electrostatic latent image on the photoreceptor according to the video signal and the control signal from the controller 2,
In addition, transfer paper is fed from the paper feed unit, and transfer and fixing are performed.
Form an image.

In such a configuration, the host I / F 5
The data transmitted from the host 3 to the printer 1 through the CPU 9 is the print data and the print control data (S
P, CR, IF, HT, VT, etc.) and others. The print data and print control data are
The data is temporarily stored in a reception buffer on the RAM 10. The received data once stored is retrieved one by one by the control program on the program ROM 6 and processed. For example, if the extracted data is a character code, an intermediate code including a print position, a print size, a character code, font information, and the like is created and stored in an intermediate buffer provided on the RAM 10.

If the extracted data is a command such as a control code or an escape sequence, a predetermined process is performed on the command. For example, if it is a print position specification, the next character code position is set to the specified position, or if the font is changed, the font information of the next character code is specified. Processing is performed, such as making a font.

In this way, when the print command from the host 3 is processed, or when the processed data exceeds one page, the intermediate code stored in the intermediate buffer is converted into video data in accordance with the control program. Perform the following processing. When the conversion is completed, the controller 2 issues a print start command to the printer engine 13 via the engine I / F 12, and transfers video data in synchronization with the print start command. The print data from the host 3 is printed via the printer engine 13 in a series of flows as described above.

FIG. 2 is a flowchart of the print job cancel control according to the embodiment of the present invention. During normal print processing, data is fetched from the host 3 (S1), and normal processing is repeated to form an image.
3 (S3). The normal processing in step S3 is the same as the conventional processing, so that the details are omitted here.

In general print job cancel control, if it is determined that a print job cancel input has been made (Y in S2), the flow branches to step S4 to delete (cancel) the already-developed pages already developed in the apparatus. ), And the received data is canceled in steps S6 to S8. In the present invention, before canceling the received data, the number of jobs to be newly canceled in step S5 is input, and the number is stored internally as a variable.
As an example, if the number of jobs is input as 3, the variable “can” is internally stored. job = 3 ".

Next, in steps S6 to S8, the received data is canceled as in the conventional case, and a job end determination function is executed (S7). When it is determined that the job is ended (Y in S8), the job is held. The number of canceled jobs is decremented (S9). Then, the decremented variable is checked (S10). If the variable is not 0 (N in S10), the process returns to step S6, and the next job is continued to be canceled. On the other hand, if this is 0 (Y in S10), the cancellation of the job is terminated, and the process returns to step S1 to resume normal printing. Therefore, steps S6 to
Loop for the number of jobs to cancel S10,
The specified number of jobs will be canceled. In the case of this example, “ca” is used in step S10 of the first loop.
n job = 2 ", N is determined in step S10, and the process returns to step S6. The second time is "can job
= 1 ", the same processing is performed. The third time, "can job
= 0 ”, the end is determined, and the process returns to the normal process of step S1. This means that the three jobs have been canceled.

Laser printer 1 according to an embodiment of the present invention
Has a controller 2, an operation panel 4, and a printer engine 13. The operation panel 4 has a cancel job number designation key, and has a job end determination function, a cancel job number decrement function, and a remaining cancel job number determination function. Then, the job can be automatically canceled for the designated number of jobs.

[0022]

As described above, according to the present invention, a plurality of print jobs stored in the image forming apparatus or a plurality of print jobs stored in the host can be operated by one operation. Since arbitrary multiple jobs or all jobs can be canceled, there is no problem that a job intended to be canceled is output as in the past, or canceling of each job is completed to surely cancel the job. This eliminates the need for a troublesome operation such as repeating the operation many times, and can improve the usability.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a hardware configuration of a laser printer.

FIG. 2 is a flowchart of print job cancel control according to the embodiment of the present invention.

[Explanation of symbols]

 1 Printer 2 Controller 3 Host 4 Operation Panel 5 Host I / F 6 Program ROM 7 Font ROM 8 Panel I / F 9 CPU 10 RAM 11 NV-RAM 12 Engine I / F 13 Printer Engine 14 Option RAM

Claims (2)

[Claims] An operation of a job cancel instructing means is performed to discard data already stored in the apparatus in a print job receiving print data and to discard subsequent received data, and to discard data when the job ends. An image forming apparatus having a job cancel function for terminating, comprising a cancel job number designating means for designating the number of jobs to be canceled, and having a function of executing job cancellation for the number of jobs designated by the designating means. Image forming device. 2. The job termination determining function according to claim 1, wherein when the number of jobs to be canceled is designated by the cancel job number designating means, the job termination is judged by the job termination judging function. An image forming apparatus wherein the number of remaining cancel jobs is decremented by one and the number of remaining cancel jobs is determined by a remaining cancel job number determining function.