JPS6298368A - Copying machine - Google Patents

Abstract

PURPOSE:To stop a main body from performing wrong operation based upon abnormal data generated owing to the runaway of an operation part by providing an operation control part, a main body control part, etc., and detecting the abnormality of the operation part. CONSTITUTION:The main body 21 of the main body control part 20, the operation part CPU 31 of the operation control part, a display part 32, the operation part 33, etc., are provided. Specific data is added by the operation control part 30 to data sent from the main body control part 20 and the resulting data is sent back to the main control part 20. Then, the main body control part 20 judges and detects the availability of the sent-back data to prevent copying operation based upon abnormal data from being carried out. Thus, wrong main body operation based upon abnormal data generated owing to the runaway of the operation part 33 is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying apparatus that detects an abnormality in an operation control section and stops execution of main body operation using different data.

[Conventional technology]

In recent years, as copying machines have become faster and more multi-functional, copy control functions have increased, making it difficult to control all control systems such as operation control using the main body control unit, as in the past. Therefore, it is considered effective to provide an operation control system in the operation section and to perform data communication between the main body and the operation section.

[Problem that the invention seeks to solve]

However, if the system described in item 1-- is used as is, malfunctions of the operation control section may occur due to causes inside or outside the neck attachment, which poses a problem in that the effectiveness of communication data is reduced.

[F-stage to solve problems]

In view of the indignation of Jl. It is an object of the present invention to solve this problem by detecting the effectiveness of 'l'11 in the main body control section and preventing execution of a copying operation using different data.

〔Example〕

An embodiment of the present invention will be described below based on the drawings. Fig. 1 is a circuit diagram of this embodiment, and 21 is a main body control section 2.
0 is the main body CPU, 31 is the operation unit CP of the operation control unit 30.
Reference numerals U and 32 are also display sections, and 33 is an operation section.

In addition, 21S is connected from the main body CPU 21 to the operation unit CPU 31.
21d is the operation unit display data that is also sent in 4-bit increments, 31d is the operation unit CPt.
This is key data sent from J3L to main body CPU2L in 4 bits each.

What is shown in FIG. 2 is an external view of the 1 display section 32 and the operation section 33, where 1 is a copy start key.

2 is a copy stop key, 3 is a group of numeric keypad numeric set and clear keys, 4 is a reduction key, 5 is a same size key, 6 is an enlargement key, 7 is a magnification setting key, 8 is a copy density key, 9 is a 7 segment i 10 is a copying machine status display section, 11 is a fixed-form magnification display section, 12 is a 7-segment magnification display section, and 13 is a density display section. That is, these display units 32 allow the operator to display necessary information (
This allows you to know the number of copies set, magnification, copy density, etc.) and the condition of the main body.

Therefore, a flowchart for controlling the copy operation is shown in FIG. 3, and an example will be explained. Note that 5t-S10 indicates each step of the flowchart.

First, as shown in FIG. 4, after the start signal 21S is sent from the main body CPU 21 to the operating unit CPU 31, the operating unit display data (see FIG. 5) 21d is also sent in lower and upper 4 bits by data communication. (Sl), and is displayed on the operation unit 33 according to the data. That is, the fifth
In the display data in the figure, b3 to 0 of address 00 displays the minus digit (0 to 9) of the copy number display section 9, and address OO
b7-4 of address 01 and b3-0 of address 01 similarly display the g's digit and hundreds's digit. b3~0 of address 02 displays the - digit of the variable magnification display section 10, and b7~0 of address 02
4 and b3 to b0 of address 03 similarly display the + digit and hundreds digit. At address 04, from b to 0, the current magnification state is hit, and the corresponding display section lights up. For example, in the state of A3→A4R, bl
turns on and the A3→A4R display lights up (S2)
. Specific data Cl0101010B) is entered into address 05 as data for detecting operation unit runaway (S3), and address 06 is a checksum.

The main body of the copying apparatus u is operated by sending key data 31d input from the keys of the operation section 33 to the main body CPU21. When the key of the operation unit 33 is pressed, the key code data (see FIG. 7) corresponding to the pressed key is encoded by the operation unit CPU 31 (S4), and the key code data corresponding to the pressed key is encoded by the operation unit CPU 31 (S4)
The key data 31d (see FIG. 6) sent to the main body CPtJ21 is entered at addresses 00 b7 to o (S5).

Operation unit runaway detection data sent from the main CPU 21 to address 01 (address 05 of display data in Figure 5)
) (56) and start signal 2 as shown in Figure 4.
The lower and upper 4 bits from 1s are sent to the main body CPU 21 (S7), and the main body receives the received input key data 31.
Perform main unit operations according to d0 For example, copy start +
When -1 is pressed, copying is executed. However, even if an abnormality occurs in the operation unit 33, causing a malfunction, and the input key data 31d becomes data different from the pressed key.

Unless a communication abnormality is detected, the main unit will operate according to the data. For example, when you press the magnification setting key 7 to change the magnification, the operation unit CPU3
Even if an abnormality occurs in 1 and copy start key 1 data is sent instead of the magnification key data, the 5 main unit will still perform the copy operation. The data for detecting part runaway is added and sent, and the data is added to the input key data 31d from the operation part 33 to the main body and sent back. Main body CPU21
Now, the input key data 31d sent back (Figure 6)
The data for detecting the operation wing running at address 01 and the main body CP
Compare the display data 21d of U21 (FIG. 5) with the operation unit runaway detection data at address 05 (S8).

If they are the same, the address O of the input key data (Figure 6)
The main body operation according to the O key code is executed (S9).

However, if they are different, the operation unit CPU 31
It is determined that there is an abnormality, the key code is canceled, and the main body operation section is not executed (S10).

〔Effect of the invention〕

As described above, the present invention has the effect that by detecting an abnormality in the operating section, it is possible to prevent execution of an erroneous main body operation based on abnormal data caused by runaway operation of the operating section.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a circuit of an embodiment of the present invention;
FIG. 2 is an external view of the display section and operation section of the operation control section, FIG. 3 is a flowchart showing copy operation control, and FIG. 4 is a timing chart of signals between the main body CPU and the operation section CPU. 55 is a diagram showing display data, FIG. 6 is a diagram showing key data sent from the operating section to the main body, and FIG. 7 is a diagram showing key code data corresponding to the keys of the operating section. 20... Main body control section 21d... Operation section display data 30... Operation control section 31d... Key data 32... Display section 33・・・・・・Arolog diagram showing the circuit 4 of the operation unit unreleased a month. Fig. 1 shows the display section of the 4-operation unit 5P area and an external view of the operation unit. Fig. 2 shows the copy operation control. Off-road 1,000 yards Figure 3

Claims (1)

[Claims] A means for determining the main body condition information sent from the main body control section and displaying it on the display section, and a means for changing the operation input information into predetermined data and sending it back to the main body control section to perform the copying operation. In a copying apparatus having an operation control section, the operation control section adds specific data to the data sent from the main body control section and sends it back to the main body control section, and also checks the validity of the sent data. 1. A copying device characterized in that a main body control section determines whether or not the image quality is different.