JP3371866B2 - Image forming device - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention combines copy functions.
Image forming device such as a facsimile machine that you have
It is related to power supply to the indicator.

[0002]

2. Description of the Related Art Generally, an image forming apparatus such as a facsimile machine having a copy function (hereinafter abbreviated as "multifunction machine") or a digital copying machine is an auto document feeder (ADF) or a flat bed type. A document placing table for reading is provided. The ADF is for continuously and automatically feeding a large number of documents to be read to an optical reading system to continuously read an image from each document surface.

Further, the flatbed-type reading original placing table has a cover glass as a transparent original supporting plate, and a user reads one original to be read at a predetermined position on the cover glass. They are placed one by one and read by an optical reading system. The reading method using such a flat bed type document placing table is generally called book reading. The cover glass as the document supporting plate constitutes a flatbed scanner (FBS) together with the optical reading system.

When copying an original document by a digital copying machine or a multi-function peripheral, a reading mode (resolution) corresponding to the number of copies and the type of the original document (normal image information of a character or a figure or a photograph). ) Is specified, the start button is pressed to start reading the original, and the copy copy is printed on the specified number of sheets of recording paper.

Incidentally, in consideration of recent environmental problems, it has been attempted to reduce power consumption as much as possible in this kind of image forming apparatus. For that purpose, for example,
So that you can do it within the preset time,
After that time has passed, the power to the display and printer heater is turned off.
Power supply is cut off and the image forming apparatus is operated in low power mode.
I am trying to let you. That is, the key is in low power mode.
When it is determined that there is an operation, the timer is activated and preset.
Display or printer heater until the specified time has elapsed.
I am trying to supply power.

[0006]

However, as mentioned above,
Until the preset time elapses after the timer is activated
During the period, power is supplied to the display and printer heater.
Then, for example, if a paper jam occurs or interrupt handling is performed.
If you have done the work, while doing that process
The time is judged and the power supply to the display is cut off.
However, the status such as paper jam or interrupt processing is displayed on the display.
There was a problem that it might not be displayed .

The present invention has been made to solve such a problem, and provides an image forming apparatus capable of ensuring power supply to a display unit in an image forming apparatus operated in a low power mode. With the goal.

[0008]

The present invention according to claim 1
Displays the operation section where the operation keys are arranged and the processing content.
Display unit and recording unit that prints captured images on recording paper
A switch for supplying electric power to the display unit, and a timer
And the switch is operated by operating the operation key of the operation section.
With the closing operation, the timer is activated and the timer is
Means for opening the switch when the set time is reached
And a predetermined operation of the operation section when the switch is closed.
Printing on the recording paper of the recording section by operating the key
An image forming apparatus that is executed, wherein the recording of the recording unit is performed.
While printing to paper, there is an interrupt that stops it
When it occurs, stop the operation of the timer before the set time is reached.
It is characterized by comprising a timer stopping means.

According to a second aspect of the present invention, in the image forming apparatus according to the first aspect, printing on the recording paper of the recording unit is performed.
The interrupt that stops the execution of
It is a key operation .

According to a third aspect of the present invention, in the image forming apparatus according to the first or second aspect, the recording of the recording section is performed.
Occurrence of an interrupt that stops printing on paper causes a paper jam.
It is characterized in that it is a paper jam detection of a sensor for detecting a jam .

In the present invention, the timer is operated by operating the operation keys.
Is displayed until the preset time has elapsed after activating
Power is supplied to the printing section, but
During printing, paper jams, interrupt operations, etc. may occur.
When an interrupt occurs that stops the execution of
Switch that supplies power to the display because it stops operating
Keep it closed to prevent paper jams and interrupt processing.
Which state can be displayed continue to on the display unit.

[0012]

[0013]

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a side view of the reading portion of the image forming apparatus to which the present invention is applied. The image forming apparatus is configured as a multifunction machine having both the copying function and the facsimile function as described above. In FIG. 2, a multifunction machine 1 as an image forming apparatus is provided with a device case 2,
A presser lid 3 and a document feeding section 4 are provided.

The device case 2 incorporates an optical reading system (OP). Although details of the optical reading system are not shown, a lamp 9 as a light source and a reflection mirror are attached to a moving frame driven by a step motor, and a condenser lens and an image pickup device for image reading ( A CCD) is fixed in the device case 2. The lamp 9 serving as a light source reciprocates in the horizontal direction (direction of arrow S).

A transparent cover glass 8 is mounted on the upper surface of the apparatus case 2 as a support plate for placing a document to be read when used in the FBS mode. The cover glass 8 constitutes an FBS together with a lamp 9 and a reflection mirror which are light sources attached to the moving frame of the optical reading system.

The pressing lid 3 is provided with a substrate 5, a paper feed tray 6 and a discharge tray 7, and is attached to the upper end portion of the device case 2 by a hinge mechanism so as to be openable and closable. That is, the holding lid 3 acts as an opening / closing plate that opens and closes the cover glass 8. The document feeder 4 is a main component of the ADF, and takes in the document to be read in the paper feed tray 6 and reverses it. Subsequently, the document to be read is conveyed in the document feeding unit 4, and when it passes over the transparent plate, the image of the document to be read is read by the optical reading system and is discharged to the discharge tray 7.

Next, the document feeding section 4, which is a main component of the ADF, will be described. At the entrance of the document feeder 4,
The document width detecting sensors 4l are installed at a predetermined pitch. Inside the document feeding unit 4, there are provided a feeding roller 4a and a separation roller 4b for taking in the uppermost document to be read on the paper feed tray 6. Further, a sheet feeding auxiliary roller 4c is provided on the side of the feeding roller 4a, and the driving force from the feeding roller 4a is transmitted by the belt 4d.

The sheet feeding auxiliary roller 4c rotates in the same direction as the feeding roller 4a due to the driving force transmitted from the belt 4d as the feeding roller 4a rotates, and descends to feed the sheet. It abuts on the upper surface of the document to be read at the uppermost position on the paper tray 6, and assists the paper feeding by the feeding roller 4a. Feeding roller 4a
A transport roller 4e and a pair of driven rollers 4f and 4g are provided on the downstream side of the separation roller 4b.

In the ADF mode, the feeding roller 4a
The document to be read that has been taken into the document feeder 4 by the separation roller 4b and the separation roller 4b is conveyed by the conveyance roller 4e and a pair of driven rollers 4e.
After being conveyed while being sandwiched between f and 4g and being inverted, it passes over the transparent plate 4k. The image of the document to be read is read by the optical reading system through the transparent plate 4k.

The document to be read that has passed on the transparent plate 4k is conveyed by a pair of discharge rollers 4h and 4i, and the discharge port 4 is provided.
It is discharged onto the discharge tray 7 from j. Further, a document sensor 41 for detecting that a document is set is provided at the tip of the paper feed tray 6. This document sensor 4l
Is configured using, for example, a photoelectric sensor.

FIG . 1 shows an image forming apparatus having the above structure.
It is a schematic block diagram which shows a control part. The control unit 20 includes a central processing unit (CPU) 21, a network control unit (NCU) 22, a modem 23, an image memory 24, a RAM 25, a ROM 26, and a codec 2.
7, display unit 28, operation unit 29, reading unit 30, recording unit 3
1. An interface 32 of a personal computer (PC) is provided. 33 is a PC interface.
A control unit 2 is a PC connected to the face 32.
0 display unit 28 and print heater 31 of recording unit 31
It is a main power supply for supplying power to b (the power supply for the control unit 20 is omitted). A timer operated by a program is set in the CPU 21.

Network control unit (NC
U) 22 controls the closing and opening of the telephone line L and detects the sending and receiving of dial pulses corresponding to the fax number of the other party. The modem 23 modulates and demodulates transmission / reception data. The image memory 24 stores received image data.
The image data (image data) read by the data or the optical reading system is temporarily stored.

The RAM 25 functions as a work area for storing temporary data and the like obtained by the arithmetic processing according to the control program. The ROM 26 stores various control programs necessary for controlling the operation of this machine.

The codec 27 encodes (encodes) the image data read by the reading section 30 by the MH, MR, MMR system or the like when transmitting it to another facsimile device or the like.
To do. In addition, the image data received from another facsimile device is decoded (decoded). The display unit 28 includes a liquid crystal display panel and a light emitting diode (LED), and displays various information such as the operating state of the device.

The operation unit 29 is provided with a copy key 29a and an interrupt key 29b. Further, the operation unit 29 is provided with various keys necessary for operating the apparatus such as a ten key, a start key and a stop key. Interrupt key 29
b is used when an image of a new original is interrupted and formed during the image formation of a certain original.

Further, the operation unit 29 is provided with a copy / communication key for selecting the copy mode or the facsimile communication mode of the copy / facsimile multifunction machine, and a character or the like for the manuscript. Modes such as a reading mode key to set the reading mode (resolution) of the copy according to the image information or the photo information, a key to set the automatic reduction, and the automatic recording paper selection mode. A docky is provided. These modes can be configured to be selected and set by a touch panel on the screen of the display unit 28.

The reading unit 30 is composed of an optical reading system. As described above, the signal from the CCD 30a for image reading is input to the image processing circuit 30b, and the original image data is image information such as characters. , Or the photographic information, that is, the image area separation processing is performed according to the characteristics such as the density distribution and variation of the original image data, and then the binarization processing is performed on each image area. Further, the reading unit 30 is connected with an original sensor 30c (corresponding to the reference numeral 4l in FIG. 2), a light source 30d (corresponding to the reference numeral 9 in FIG. 2), and a motor 30e through an appropriate interface. ing.

The recording unit 31 is composed of an electrophotographic printer, and receives image data read by an image reading system or an optical reading system (in the claims, it is said that both image data are taken in.
U) is copied onto recording paper of a fixed size supplied from a paper feed cassette (not shown ) . It is also possible to provide a clock unit for counting the current time and print the time at that time on the received document using the output thereof. Reference numeral 31a is a sensor for detecting a paper jam (jam), and 31b is a printer heater.

Reference numeral 32 is an interface of a personal computer (PC) to which an external PC 33 is connected. T1 is C
A switch for shutting off (turning off) the supply of the main power supply 34 to the display unit 28 with a signal from the PU 21, T2 is a main power supply 3 to the printer heater 31b of the recording unit 31 with a signal from the CPU 21.
4 is a switch for shutting off (off) the supply of No. 4.

[0031]

The control will be described below with reference to FIGS. 1 and 3 to 5.
The operation of the controller 20 will be described.

First, when the controller 20 is powered on,
The CPU 21 starts the processing program (S1 in FIG. 3),
Turning on the switches T1 and T2, the display unit 28 and the printer
Power is supplied from the main power source 34 to the switch 31b (see FIG. 3).
S2), the timer is started (S3 in FIG. 3). One
Then, it is judged whether or not the copy key 29a is turned on.
(S4 in FIG. 3), the determination result is YES (hereinafter, YES
Abbreviated as Y), make a copy print on the recording paper.
(S5 in FIG. 3), NO (hereinafter, NO is abbreviated as N)
If there is facsimile reception or external PC data reception
It is determined whether or not (S15 in FIG. 5), and the determination result is Y.
If so, the image is received and stored in the image memory 24 (S in FIG.
16), if N, it is determined whether the time is up (Fig.
5 S17). If this determination result is Y, the switch T1
And T2 are turned off and display 28 and printer heater 31b are turned on.
Power supply is shut off (S18 in FIG. 5), and if N, then
Return to S4 of 3 and check whether copy key 29a is turned on.
judge. Then, the switches T1 and T2 are turned off.
And any operation key, for example, copy / communication key operation
(S19 in FIG. 5), the switches T1 and T2 are turned on.
Then, the timer is started, and after that, the copy key 29a
Judgment whether it is turned on, facsimile reception or external
Whether or not the PC data is received and whether the time is up
The determination is repeated. The copy key 29a is
Judgment whether or not a fax is received,
Whether to receive PC data and whether to time up
Since the judgment of No. does not continue, it will be N immediately after the judgment.
As a result, the switch T1
And turn off T2. That is, operation of the operation keys of the operation unit
Operation closes the switch and activates the timer
However, the switch is opened when the set time of the timer is reached.
Means are configured.

Whether or not the copy key 29a is turned on is determined.
If it is determined to be Y in the setting (S4 in FIG. 3), or
Judgment as to whether it is received by Similia or external PC data
If Y is determined in (S15 of FIG. 5), the recording paper is printed.
The process of printing is executed (S5 in FIG. 3). This run
Inside, it is judged whether there is a paper jam (S6 in Fig. 3) and
It is determined whether the keypad 29b has been operated (S in FIG. 3).
9, S10) of FIG. 4 is performed. Whether there is a paper jam
If the result of the determination (S6 in FIG. 3) is Y, the display unit
28 indicates that the paper is jammed (S7 in FIG. 3) and the timer is stopped.
Stop (S8 in FIG. 3). Stopping this timer causes the switch
Switch T1 does not turn off, eliminating paper jams
The display continues until. In addition to the paper jam of the recording paper by the sensor 31a, the paper jam during the operation of the ADF can be detected by the sensor 4l. That is, execution of printing on the recording paper of the recording unit
During which a paper jam interrupt occurs that stops its execution
The timer that stops the timer before the set time is reached.
Ma stop means is configured .

Determining whether or not there is a paper jam (S in FIG. 3)
If the result in 6) is N, the current print is the last page.
It is determined whether or not (S9 in FIG. 3), and if N, an interrupt
It is determined whether or not the read key 29b is operated (S in FIG. 4).
10). If this judgment result is N, the recording paper on the next page
The print process is executed (S5 in FIG. 3), and if Y, then the Thailand
Stop (S11 in Fig. 4) and copy key at interrupt.
On / off judgment (S12 in FIG. 4) and the judgment result.
If the result is Y (on), the recording paper is
The print process is executed (S13 in FIG. 4), and this process is interrupted.
It is continued until there is an operation to cancel the lock (S1 in FIG. 4).
4) . That is, during printing on the recording paper of the recording unit
There is an interrupt called the operation of the interrupt key to stop its execution
When it occurs, stop the operation of the timer before the set time is reached.
Timer stop means is configured .

Also, by stopping the timer, the switch
Since T1 is not turned off, interrupt processing is canceled.
Until then, the display of the contents can be continued. And
When the interrupt processing is completed, there is no interrupt and the last page
If there is, restart the timer (S3 in FIG. 3,
In this case, switches T1 and T2 are on
To continue. ), It is determined whether or not the copy key 29a is turned on.
Setting (S4 in FIG. 3), facsimile reception or external PC
Determining whether data is received (S15 in FIG. 5) and time
After repeating the determination whether it is up (S17 in FIG. 5),
Switch T1 and T2 are turned off by the judgment of im-up Y
To do. Recording of remaining pages interrupted by execution of interrupt processing
Print processing on paper is performed by operating the copy key.
It

[0037]

[0038]

[0039]

[0040]

As shown in the processing of S17 and S18 in FIG . 5 , when the set time of the timer elapses, the main power supply to the display unit is stopped, the printer heater is turned off, and the low power mode is set. The image forming apparatus is operated at. However, as shown in process of S6, S8 of FIG. 3, the paper jam trigger occurs a timer is stopped, low power mode based on the time-up - which prevents the transition to de.

Further, as shown in the processing of S10 and S11 in FIG. 4, the timer is stopped even when the interrupt key is on to prevent the shift to the low power mode due to the time-up. ing. In this way, when a paper jam rear interrupt processing, low power mode - because by preventing the transition to de continues the power supply of the display unit, is possible to improve the operability can view the status of processing it can.

After the transition to the low power mode, copy / communication is performed.
It is determined whether or not there is a key input (S19 in FIG. 5), and the determination result
If the result is Y (Yes), turn on the switches T1 and T2,
Returning to the processing of S3 in FIG. 3, the timer is started. Since
The same operation as above is repeated below. Also, copy / communication
The result of the judgment as to whether or not the input of the transmission key is present (S19 in FIG. 5) is N.
If so, facsimile reception or external PC data reception
It is determined whether or not (S20 in FIG. 5), and the determination result is N.
If there is, a determination is made as to whether or not there is a copy / communication key input (see FIG. 5).
Returning to S19), this operation is repeated.

Facsimile reception after shifting to low power mode
Signal or external PC data reception (S in FIG. 5)
20) If the result is Y, turn on T2 (S2 in FIG. 5)
1) print the received image on the recording paper (S2 in FIG. 5).
2) Then, turn off T2 and input copy / communication key
The process returns to the determination of whether or not there is (S19 of FIG. 5).

As shown in S20 to S22 of FIG . 5 , the power supply to the display unit is turned off during the facsimile reception or the external PC data reception, but the printer heater is turned off.
The image forming apparatus is operated in a low power mode by turning on the power of the computer. For facsimile reception or external PC data reception, by printing the received image on recording paper without displaying it on the display unit,
This is because the reception destination can confirm the reception of the image.

In the above example, when the set time of the timer elapses, the power supply to the display unit is stopped and the printer heater is turned off to shift to the low power mode. However, the energy saving setting key ( saving Eneki -) is provided, if necessary those該省Eneki - Purintahi by turning on - electricity to motor
Alternatively, the power supply may be turned off to shift to the low power mode.

[0047]

As described above , according to the present invention,
While printing on the chart paper in the recording section,
An interrupt that stops the execution, such as an interrupt operation, has occurred.
Sometimes the timer does not time out, so
The switch that supplies power to the display remains closed.
The status of the paper jam or interrupt processing is displayed on the display.
An image forming device that can be continuously displayed and has good operability.
Can be obtained.

[0048]

[0049]

[Brief description of drawings]

FIG. 1 is a block diagram of a control unit of an image forming apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic side view of a reading portion of the image forming apparatus.

3 is an operation explanatory diagram of a control unit of the image forming apparatus shown in FIG.
Is .

FIG. 4 is an operation explanatory diagram of a control unit of the image forming apparatus shown in FIG.
Is .

5 is an operation explanatory diagram of a control unit of the image forming apparatus shown in FIG.
Is .

[Explanation of symbols]

1 Image forming device 2 body case 3 Presser lid 4 Document feeder 5 substrates 6 paper feed tray 7 Output tray 8 cover glass 20 Control unit 21 Central Processing Unit (CPU) 25 RAM 28 Display 29 Operation part 29a Tenki 30 Reader 30b image processing circuit 30c Document sensor 31 Recording Department

Claims (3)

(57) [Claims] 1. An operation unit in which operation keys are arranged, a display unit for displaying processing contents, a recording unit for printing captured images on recording paper, a switch for supplying electric power to the display unit, and a timer. , Closing the switch by operating an operation key of the operation unit and operating the timer,
When the switch is closed, it has a control means for opening the switch when the set time of the timer is reached, and when a predetermined operation key of the operation section is operated, printing on the recording paper of the recording section is executed. The image forming apparatus, further comprising timer stop means for stopping the operation of the timer before the set time is reached when an interrupt for stopping the execution of the print on the recording paper of the recording unit occurs. An image forming apparatus characterized by the above. 2. The image forming apparatus according to claim 1, wherein the interrupt for stopping the execution of printing on the recording paper of the recording unit is an operation of an interrupt operation key of the operation unit. 3. The image forming apparatus according to claim 1, wherein the interrupt for stopping the execution of the printing on the recording paper of the recording unit is the paper jam detection of the sensor for detecting the paper jam.