JP2881698B2 - Display control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display control device for a device having a display, such as a copying machine.

[Conventional technology]

Conventionally, for example, in a copying machine, when the copying machine is in a preheated state, all the display contents of a display of an operation unit are erased, and even if an abnormality occurs in the copying machine during that time, a warning is displayed. Did not.

[Problems to be solved by the invention]

As described above, while the display unit of the conventional device erases the display content, the display unit of the device is displayed even if the detecting unit detects the abnormal state of the device having the higher priority display content. Since there is no indication of the abnormal state of the device, there is a danger that the device will not be timely and accurately treated, and that the device will be damaged.

The present invention has been made in order to solve the problems of the conventional example described above, and even when the display unit that displays the control state of the control target is in the power saving state, the detection is performed. It is an object of the present invention to provide a display control device capable of promptly informing an operator of an abnormal state.

[Means for solving the problem]

A display control device according to the present invention includes a display unit that displays a control state of a control target, a power saving unit that sets the display unit to a power saving state, a detection unit that detects an abnormality of the control target, A release unit that releases the power saving state of the display unit when an abnormality is detected by the detection unit; and after the release of the release unit, the indication that the control target is abnormal based on the detection of the detection unit. And a control means for displaying the information on the display unit.

 The object to be controlled is a copying machine.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Structure) FIG. 1 is a front view of an operation unit of a copying machine according to an embodiment of the present invention, FIG. 2 is a front sectional view of the same copying machine, FIG. 3 is a control block diagram of the same copying machine, and FIG. FIG. 5 is a block diagram of the display control, FIG. 5 is a flowchart of the display control, and FIG. 6 shows an example of the abnormal state display. The same or corresponding parts in the respective drawings are denoted by the same reference numerals.

That is, in FIG. 2, the copying machine 1 has a body main body 3 in which a copying section 2 is built, and the body body 3 is composed of a platen 5, a light source 6, and mirrors 7, 8, 9, 10, 11, 12, and 12. , Lens 13,
The cassette 15 includes two cassettes 15 and 16 for storing sheets S. A paper feed roller 17 is provided above the cassette 15 and a paper feed roller 19 is provided above the cassette 16. A home position sensor S1 for detecting a home position of an optical system such as a light source 6 and mirrors 7, 8, and 9 is provided on an upper left side in the body 3 and a front end position of a document placed on a platen 5. A corresponding image sensor S2 is provided, and a sensor S3 for detecting the maximum movement position of the optical system is provided on the upper right side. Further, in the vicinity of the cassettes 15 and 16, sheet presence sensors S4 and S
5 and sheet size sensors S8 and S for detecting the size of sheets stored in the cassettes 15 and 16 according to the type of the cassette.
9 are arranged. A pair of transport rollers 20 is provided downstream of the paper feed roller 17 and a pair of transport rollers 21 is provided downstream of the paper feed roller 19, and the sheet S is detected downstream of the pair of rollers 20 and 21. A sheet sensor S10 and a pair of registration rollers 22 are provided. Furthermore, this roller pair 22
The copying unit 2 is provided downstream of the printer 1, and a fixing device 25 containing a transport device 23 and a heater 25 a is provided downstream of the copying unit 2. A discharge sensor S11, a transport roller 24, a flapper 26, and a discharge roller 27 are provided downstream of the fixing device 25.A discharge tray 29 is provided downstream of the discharge roller 27. ing. In addition, the flapper
26, a re-transport path 30 is provided. The re-transport path 30 includes a transport roller pair 31, a sheet sensor S12, a reversing roller pair 32, a sheet sensor S13, a re-feed roller pair 33, and an intermediate tray. 34 are arranged.

Further, a laser unit 35 is disposed in the body 3 of the vehicle, and the unit 35 includes a laser emitting unit 36, a polygon mirror 37, a polygon motor 39, and a mirror 40. The reference numeral 41 in FIG.
This is a shutter that blocks light projected on the shutter. The copying section 2 includes a cylindrical photosensitive drum 42,
An erase lamp 43, a primary charger 45, a color developing unit 46, a developing unit 47, a transfer charger 49, a separation charger 50, and a cleaner 51 are provided around the printer. Further, a pressing plate 52 for pressing a document to the platen 5 is supported on the upper portion of the body 3 so as to be freely opened and closed.

On the other hand, in FIG. 1, the copying machine 1 is provided with an operation unit 55, which is provided with a power switch 56 on the right end, and a reset / stop key 57 and a start key 59 on the left side. Are located. A ten key 63 is arranged on the left side of the start key 59. Also,
A copy density display LED 66, a cassette stage selection display LED 67, and a selection key 68 for selecting the cassette 15 or 16 are provided on the left side of the numeric keypad 63. In addition, this selection key
On the left side of 68, a copy density adjustment key 70, an equal-magnification key 71, a zoom key 2 for instructing a copy magnification to a predetermined magnification in increments of 1%, and a standard magnification key 73 for instructing a standard reduction or a standard magnification.
Is arranged.

The start key 59 indicates that copying is possible or not.
An LED 104 is provided, and a preheating key 76 for operating a control means 86b for erasing the display content of the display is disposed above the LED 104. The preheating key 76 includes a preheating display LED 83. In addition, a copier 1
A liquid crystal display section 80 as a display means for displaying the control state of the liquid crystal display section is provided. Below the liquid crystal display section 80, a liquid crystal display section illumination lamp 103 is disposed.

On the other hand, as shown in FIG. 3, the copying machine 1 includes a control unit 86, and the control unit 86 includes a microcomputer, a RO
It is composed of M, RAM and timer. This control unit 8
6, a control means 86a for displaying the display means as shown in FIG. 4, a control means 86b for erasing the display, and a state in which the display contents of higher priority should be displayed while the display contents are being deleted. Detecting means 86c for detecting, when the detecting means 86c detects that it is in a state to display the display contents with higher priority, cancels the deletion of the display contents,
The display content having the higher priority is displayed on the liquid crystal display unit 80.
Each of the sensors S1 is connected to an input section of the control section 86, and an output section of the lamp 6 and the heater 25a via the laser unit 35, the shutter 41, the buzzer 87, and the AC driver 89 is connected to the output section. Each charger via AC load, high voltage generator HVT
45, 49, 50, the driving force from the main motor 93 is connected to the conveying roller pair 20 or 21 and the solenoid 100 that activates the paper feed clutch 90 that connects and disconnects the driving force from the main motor 93 is connected to the registration roller pair 22.・ Resist clutch 10 to be disconnected
1 is connected to the solenoid 102.The input / output unit further includes a main motor 93, an optical motor 95, and a stepping motor 96 via an operation unit 55, a sorter 85, a document feeder 91, and a motor control unit 92. It is connected.

(Operation) An operation will be described based on the above configuration.

When the power switch 56 is input, the control unit 86
The 25 heater 25a is turned on. Then, the temperature of the fixing device 25 becomes 190
When the temperature reaches ° C, the main motor 93 is rotated. then,
When the photosensitive drum 42 makes one rotation, the control unit 86
Stop 93.

Then, when the start key 59 is pressed, as shown in FIG. 3, the control unit 86 controls the main motor 93 and the high-voltage generator HV.
T, the document feeder 91 is turned on, and the sheet feeding operation is performed. A control unit 86 that detects by a sensor (not shown) that the photosensitive drum 42, which is uniformly charged by the primary charger 45 by the ON of the main motor 93, substantially rotates once.
The lamp 6 is turned on, the optical motor 95 is turned on, and the optical system such as the lamp 6, the mirror 7, etc. is advanced to expose and scan the original on the platen 5, and the image sensor S2 detects the image. After a predetermined time, the registration clutch 101 is connected by the solenoid 102 to activate the registration roller pair 22. Then, the control unit 86 controls the solenoid 100 simultaneously with the activation of the roller pair 22.
Is turned on, the paper feed clutch 90 is connected for a predetermined time, the paper feed roller 17 or 19 and the conveying roller pair 20 or 21 are rotated again, and the sheet S is fed again. Rotate pair 22. At this time, the sheet S held between the pair of registration rollers 22 is projected onto the photosensitive drum 42 by the optical system, visualized by the developing device 46 or 47, and conveyed in synchronization with the image. Then, the sheet S conveyed in synchronization with the image on the photosensitive drum 42 by the registration roller pair 22 is transferred with the image on the drum 42 by the transfer charger 49, and is separated from the photosensitive drum 42 by the separation charger 50. You. At this time, when the optical system such as the lamp 6, the mirror 7, etc. is detected by the sensor S3, the optical system is reversed and returned to the home position. Then, the sheet S to which the image has been transferred is conveyed to the fixing device 25 by the conveying device 23, and the image is fixed by the fixing device 25. Further, the sheet S is conveyed by a conveying roller 24 to a flapper 26, and guided by the flapper 26 to a sheet discharge roller pair 27,
The sheet is discharged to a sheet discharge tray 29 by the roller pair 27.

The control unit 86 operates the control unit 86a to display the number of copies, the copy magnification, and the cassette size on the liquid crystal display unit 80 provided in the operation unit 55, and further displays a warning such as no paper. Can also. At this time, the liquid crystal display unit illumination lamp 103 disposed below the liquid crystal display unit 80 is turned on, and the content of the liquid crystal display can be made clear.

Here, the operation of the preheating key 76 will be described. As described above, when the temperature of the fixing unit 25 reaches 190 ° C. and the photosensitive drum is rotated once, the copying machine is ready for copying. The input of the preheating key 76 is permitted only in the copy preparation completed state. When the preheating key 76 is pressed, the control unit 86 controls the AC driver 89 to turn off the heater 25a of the fixing device 25, thereby setting a power saving state. The control unit 86 operates the control unit 86b to turn on the LEDs of the operation unit 55, that is, the copy density display LED 66, the cassette stage selection display LED 67, and the copy enable / disable display LED 104.
Turn off the power to reduce power consumption.
Clear all display contents of 0, and turn on the illumination lamp 103 on the liquid crystal display.
Turn off. If all the display contents on the operation unit 55 are erased in this preheating state, the user of the copying machine will not know that the copying machine is in the preheating state.
The user is informed of the preheating state by turning on the preheating display LED 83 on 76. To cancel the preheating state, the preheating key 76 may be pressed again. When the preheating key 76 is pressed again, the preheating display LED 83 is turned off, the other displays are returned to the state before the preheating state, and the motor 25a of the fixing device 25 is turned on.

Further, the control unit 86 constantly detects an abnormality of each part of the copying machine, and when an abnormality occurs, the detection unit 86c and the control unit 86a operate to immediately cancel the erasure of the display content,
A warning display of the occurrence of an abnormality as shown in FIG. In the abnormal state, the copying operation is completely stopped, and all the keys of the operation unit 55 are not allowed to be input. If any abnormality occurs in the preheating state of the device, the display contents of the liquid crystal display section 80 are all erased, so that in the conventional example, the user cannot be warned of the abnormal state.

In this embodiment, when an abnormality occurs in the preheating state as shown in FIG. 5, the control unit 86 detects this and operates the detection unit 86c and the control unit 86a to display the display on the liquid crystal display unit 80. It is possible to cancel the erasure of the contents and forcibly display the abnormal state, which is the display content with the highest priority, to warn the user that the copying machine is in an abnormal state.

In this case, the liquid crystal display unit illumination lamp 103 is also turned off in the preheating state, but when an abnormality occurs, the liquid crystal display unit illumination lamp 103 is forcibly turned on to more clearly notify the user of the abnormal state of the copier. Can be warned.

(Other Embodiments) As described above, in this embodiment, when the device is in the abnormal state, the abnormal state is displayed on the liquid crystal display unit 80. However, in other embodiments, the device is abnormal. When this occurs, a specific LED on the operation unit 55 is turned on or blinked, so that an abnormality display of the device can be performed without using a liquid crystal display. Further, in another embodiment, the number of copies, the copy magnification, and the cassette size are displayed by a 7-segment LED instead of the liquid crystal display as in this embodiment.
If you want to display using the 7 segment
It is also possible to display abnormal information on the LED to warn of equipment abnormality.

〔The invention's effect〕

As described above, according to the present invention, when an abnormality of a control target is detected while the display unit is in the power saving state in order to suppress power consumption, the power saving state of the display unit is released and the abnormality is controlled. By displaying the fact on the display unit, the detected abnormal state can be promptly notified to the operator even when the display unit is in the power saving state.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an operation unit of a copying machine according to an embodiment of the present invention, FIG. 2 is a front sectional view of the same copying machine, and FIG. FIG. 4 is a block diagram of a display control, FIG. 5 is a flowchart of the same display control, and FIG. 6 is an example of an abnormal state display. 76 is a preheating key, 80 is a liquid crystal display unit, 83 is a preheating LED, 86 is a control unit, 86a is a display control unit, 86b is a display erasure control unit, 86c is a display content detection unit, 103 is a liquid crystal display unit illumination It is a lamp.

Claims (2)

(57) [Claims] A display unit for displaying a control state of a control target; a power saving unit for setting the display unit to a power saving state; a detection unit for detecting an abnormality of the control target; and an abnormality detected by the detection unit in the power saving state. And a canceling unit for canceling the power saving state of the display unit when is detected, and after the canceling of the canceling unit, displaying on the display unit that the control target is abnormal based on the detection of the detecting unit. A display control device comprising control means. 2. The display control device according to claim 1, wherein said control target is a copying machine.