JPH05127475A - Control panel for copying machine - Google Patents

Abstract

PURPOSE:To switch language without exchanging a liquid crystal module by incorporating different language ROMs in respective LCD controllers and selecting the LCD controller in accordance with a selecting condition. CONSTITUTION:The plural LCD controllers having plural different languages are installed in a control panel for a copying machine, which is provided with the liquid crystal module 7 of a character type where set contents, operating procedure and the state of a device are displayed, a start key 2, ten keys 3, and a control key 4. One of the LCD controllers is automatically selected in accordance with a paper size or power source voltage by driving a selector by a CPU.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation panel of a copying machine including a liquid crystal display.

[0002]

2. Description of the Related Art FIG. 3 is a plan view showing an operation panel of a conventional copying machine. The flat panel body 1 includes a start key 2 for instructing the start of copying, a numeric keypad 3 corresponding to the numbers 0-9, various control keys 4, an application key 5, and a liquid crystal (LCD) module 7. Each of the centralized display units 6 is provided.

FIG. 4 is a block diagram showing details of the liquid crystal module 7 shown in FIG.

The liquid crystal module 7 includes a CPU 71 and a C
An input / output interface 72 connected to the PU 71, a key matrix 73 connected to the input / output interface 72, and an L connected to the input / output interface 72
A CD controller 74, a liquid crystal cell 76 connected to the LCD controller 74 via a common output signal line 75 and a segment output signal line 77, and a driver 78 for driving the liquid crystal cell 76. The LCD controller 74 has a built-in character ROM (read only memory) and stores, for example, the pattern shown in FIG.

In the above structure, when displaying characters on the liquid crystal module 7, first, when the CPU 71 displays data corresponding to the character, for example, "A", the upper data "0100" and the lower data "0001" are input. Output to the output interface 72. The input / output interface 72 inputs the data of the CPU 71 to the LCD controller 74. The LCD controller 74 selects the character “A” corresponding to the data, sends a segment output signal to the liquid crystal cell 76, and sends “A” to the LCD controller 74.
Is displayed.

[0006]

However, in the above-mentioned prior art, the character ROM of the LCD controller is used.
Owns only a certain fixed pattern, for example, in the case of a copying machine for Europe, it is necessary to replace the LCD controller with a liquid crystal cell reshaped in European characters as shown in FIG. In addition, there is a problem that the CPU software must be created for each destination.

To solve this problem, for example,
Although there is Japanese Utility Model Laid-Open No. 62-99068, since it is intended to display a plurality of languages on the display section at the same time, there is a problem that it is difficult to see and the display space is wide.

It is an object of the present invention to provide an operation panel of a copying machine which enables language switching without replacing the liquid crystal module.

[0009]

In order to achieve the above object, the present invention provides a character type liquid crystal display for displaying setting contents, operating procedures, device status, etc., and a copying machine equipped with various keys. The operation panel is provided with a plurality of LCD controllers having a plurality of different languages and a selection means for selecting one of the plurality of controllers according to a selection condition.

The selection condition can be a paper size for copying or a power supply voltage.

[0011]

According to the above-mentioned means, each of the LCD controllers has a different language ROM incorporated therein, and one of the LCD controllers is selected according to the selection condition. Therefore, display according to a desired language can be performed without replacing the liquid crystal module.

[0012]

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

FIG. 1 is a block diagram showing an embodiment of an operation panel of a copying machine according to the present invention. In the figure, the same reference numerals are used for the same elements as those shown in FIG. 4, and therefore, duplicated description will be omitted here.

The selector 11 is connected to the address (A) line of the CPU 71, and the input / output interface 72 is connected to the data (D) line. I / O interface 7
The LCD controller 74 is connected to the LCD controller 12 in addition to the LCD controller 74, and these controllers are selected by the output signal of the selector 11. Furthermore, CPU
An input data buffer 13 is connected to 71 via a data line, and a plurality of photo couplers 14 for paper size detection are connected to the input data buffer 13.

Next, the operation of the embodiment having the above configuration will be described with reference to the flowchart of FIG.

For example, when the paper size data is 5 bits and the MSB is "1" (that is, when light is received), it is set as an overseas paper size (legal size, letter size), and when it is "0" (that is, When receiving light), the size is set to Japanese paper size (rows A and B).

Now, assume that the Japanese paper size is set (for example, A4 size is set to "00100").
Then, as shown in FIG. 2, first, the CPU 71 checks the paper size (step 201). CPU71
Reads the paper size code, determines the Japanese paper size of MSB "0", and runs Japanese software (step 20).
2). The CPU 71 outputs address data so that the selector 11 selects the LCD controller 74 in which the Japanese ROM is stored. If the paper size code is set to foreign paper, the CPU 71 runs the foreign software (step 203) to display the LCD in the foreign language ROM.
The address data is output so as to select the controller 12. Then, the display data is sent from the CPU 71 to the input / output interface 72, and the input / output interface 72 sends the characters of the corresponding data to the liquid crystal cell 76 for display.

The means for discriminating the destination depends on the paper size, but the power supply voltage for each destination is stored in advance and the LCD controller 74 or LCD controller 12 is automatically selected according to the voltage at the time of use. You may do it.

[0019]

Since the present invention is configured as described above, it has the following effects.

In the operation panel of the copying machine according to the first aspect of the present invention, a plurality of different characters are used in the operation panel of the copying machine equipped with a character type liquid crystal display for displaying setting contents, operating procedures, device status, etc. Since a plurality of LCD controllers provided with languages and a selection means for selecting one of the plurality of controllers according to the selection conditions are provided, display according to each language is performed without replacing the liquid crystal module. be able to.

In the operation panel of the copying machine according to the second and third aspects, since the selection condition is the paper size for copying or the power supply voltage, it is possible to simplify the automatic switching of the LCD controller.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an operation panel of a copying machine according to the present invention.

FIG. 2 is a flowchart showing the operation of the present invention.

FIG. 3 is a plan view showing an operation panel of a conventional copying machine.

FIG. 4 is a block diagram showing details of the liquid crystal module shown in FIG.

FIG. 5 is an explanatory diagram showing an example of storage of a character pattern in a ROM.

FIG. 6 is an explanatory diagram showing an example of a character pattern for Europe.

[Explanation of symbols]

 1 Panel Main Body 2 Start Key 3 Numeric Keypad 4 Control Key 5 Application Key 6 Central Display 7 Liquid Crystal Module 11 Selector 12, 74 LCD Controller 13 Input Data Buffer 14 Photocoupler 71 CPU 72 Input / Output Interface 73 Key Matrix 75 Common Output Signal Line 76 Liquid crystal cell 77 Segment output signal line 78 Driver

Claims (3)

[Claims] 1. A plurality of LCD controllers having a plurality of different languages in an operation panel of a copying machine having a character type liquid crystal display for displaying setting contents, operating procedures, device status, etc. and various keys, An operation panel of a copying machine, comprising: a selection unit that selects one of the plurality of controllers according to a selection condition. 2. The operation panel of a copying machine according to claim 1, wherein the selection condition is a paper size for copying. 3. The operation panel of a copying machine according to claim 1, wherein the selection condition is a power supply voltage.