JPH02308180A - Copying device with variable power function - Google Patents

Abstract

PURPOSE:To prevent a miscopy arising from non-confirmation of a set magnification by providing a warning means canceling a copying start instruction issued through a copy key when plural magnification deciding means decide variable power. CONSTITUTION:Magnification setting means 14 to 16 set a copying magnification, and the start of a copying process is instructed through the copy key 2. The magnification deciding means 100 to 106 judge whether a magnification set by the magnification setting means 14 to 16 is unmagnified or not when the copy key 2 is operated. If so, the warning means 100 to 106 cancel a copying start instruction issued through the copy key 2. Namely, when a copying magnification is variable power, a copying action is inhibited. Thus, a miscopy arising from the non-confirmation of a copying magnification can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a copying apparatus with a variable magnification function that can perform a copying operation by appropriately changing the copying magnification.

(b) Conventional technology In a copying machine with a variable magnification function, a copying magnification is set and input using keys on an operation panel, and a desired variable magnification copy is performed. In such a copying apparatus, an operator presses a reset button to clear the setting mode after use, or an auto clear function automatically clears the setting mode several minutes after copying is completed to return to the original size.

For this reason, when the copy magnification is set to variable magnification and is waiting for it to be cleared, the operator may press the copy key without noticing this, resulting in a copy error.

Therefore, in Japanese Patent Application Laid-Open No. 61-188529, a device that emits light is provided around the copying magnification display, and when the magnification is changed, the display color of the light emitting device is changed to inform the operator of the set magnification. A copying device has been proposed.

(c) Problems to be Solved by the Invention In the above-mentioned prior art, since the variable magnification special light-emitting device remains in a state where copying is possible even when the light is changing, there is a risk that the operator may not notice the light-emitting device and cause a copy error. was still there.

Furthermore, in conjunction with the simplification of the operation panel section, products with a common copy count display section and magnification display section have been commercialized. These display sections normally display the number of copies, and only when a key for confirming the magnification or a key for setting the magnification is pressed, the display switches from the number of copies to the magnification for several minutes. Therefore, if the previous operator has made an enlarged or reduced copy, the next operator may copy without checking the set magnification when copying at the same magnification, resulting in a copy error. There was a risk.

The present invention has been made in view of the problems of the prior art, and it is an object of the present invention to provide a copying apparatus with a variable magnification function that is highly operable and economical.

(d) Means for solving the problem The present invention provides a magnification setting means for setting a copy magnification;
a copy key for commanding the start of a copying process; a magnification determining means for determining whether or not the magnification set by the magnification setting means is equal to the same magnification when the copy key is operated; and the magnification determining means The copying apparatus with a variable magnification function includes a warning means for canceling the copy start command by the copy key when it is determined that the reproduction is not the same size.

(e) Since the copying operation is prohibited when the effective copying magnification is variable magnification, it is possible to prevent erroneous copying due to unconfirmation of the copying magnification.

(F) Embodiments Hereinafter, five embodiments in which the present invention is applied to a copying apparatus will be described in detail with reference to the drawings.

FIG. 1 shows an operation unit (1) of a copying apparatus as an embodiment of the present invention.The operation unit (1) has a copy key (2) at the right end for instructing the start of a copying process. provided. A reset key (12) is provided above the copy key (2) for canceling the mode set by key operations on the operating section (1). And the copy key (2
) is a number setting key for setting the number of copies from 1 to 99 <41. (5) and a clear/stop key (3) are provided for canceling the set number of copies when setting the number of copies and for stopping copying at the time of continuous copying. The number of copies set with this number setting key (41, (5)) is displayed on the left display (9).This display (9)
is a 3-digit display consisting of a 7-segment display, and displays the number of copies or the magnification. Display (9
) is provided with a density display (lO) for displaying the density of the copied image. The density of the copied image can be adjusted using three keys: up key, down key, and auto key (6
) is set by The auto key is operated to automatically set the density of a copy image, and the up key or down key is operated to manually set the copy density. When the copy density is automatically set, the density display <10
>"AUTO" lights up and the copy density is set manually, the set density will be 7 on the density display (10).
displayed in stages.

A status indicator (7) is provided on the right side of the indicator (9) and the density indicator (10) to indicate the occurrence of a jam, out of toner, or non-installation of a key counter. On the left side of the display (9) and density display (10) are keys (14) to (16) for setting the copy magnification.
) is provided. The key (14) is a normal magnification key, and the key (15) is a magnification selection key for selecting six types of preset magnification from 50 to 141%. When you operate the magnification selection key (15), the LED group above it (
11), the LED corresponding to the selected magnification is lit. key (16
) are two magnification setting keys for arbitrarily setting the copy magnification for enlargement or reduction. And these keys (1
4) - (16) or when you press the magnification confirmation key (
13), the percentage display (
8) lights up, and the set copy magnification is displayed on the display (9).

FIG. 2 is a block diagram of the control section of the main body of the copying apparatus.

The copying machine is controlled by a microcomputer system including MPU (100). In order to store control programs etc. connected to MPU (100) in this microcomputer system (1)
A ROM (102), a RAM (1041) that temporarily stores data during control by the MPU (100) and has various flag areas necessary for control, and an MPU (100) are located inside the main body. 110 interface <106) for controlling input/output of the device.

Note that RAM (104) is backed up by a backup battery (114) such as a lithium battery connected to voltage Vcc. When the voltage Vcc is no longer supplied, the voltage of the backup battery (114) becomes RAM
(104). Therefore, even if the main switch of the copying machine is turned off, the data in the RAM (104) is retained.

The data of the key matrix (108) of the operation unit (1) and the output of the sensor circuit (110) including a jam sensor are input to the input port of the I10 interface (106).

In addition, the output boat of the I10 interface (106) has multiple drive devices (112) such as motors and solenoids.
is connected.

Next, the control procedure of the MPU (100) configured as described above will be explained based on the flowcharts shown in FIGS. 3A to 4B.

FIGS. 3A and 3B are flowcharts showing the main routine. First, in step 5101, RAM <
After clearing the copy key count value provided in the predetermined area of 104> to zero, the process advances to step 8103, where it is determined whether or not the copy key has been pressed, and if the copy key has been pressed, the copy key count value is incremented. 510
Proceed to step 7.

In step 5107, it is determined whether a timer flag is set in the flag area of RAM (104). The timer flag is set to M after the copying process ends.
This is a flag that is set when the timer value started counting by the internal timer of P U +100) reaches a predetermined time written in advance in the ROM (102), and is set as the INTE flag shown in FIGS. 4A and 11B.
Set in the RRUPT routine.

This INTERR1JPT routine uses MPU (100
The internal timer No. 3 interrupts the main routine at predetermined intervals to perform processing. FIG. 4A and FIG. 4B show the processing contents of the INTERRUPT routine,
In step 5201, it is determined whether the copying device is in a state where copying is possible, and if "YES", step 5
The process advances to step 203, where it is determined whether a copying operation is in progress. If 4NO°' is determined in step 5203, the process advances to step 5205, where keys (12) to (1
6) is operated, and if "NO", the process advances to step 5207.

“NO” in step 5201 or step 520B,
If ``YES'' is determined in either step 5205, the process proceeds to step 8223, where the timer flag is reset and the timer value is cleared to zero, after which the process returns to the main routine.

In step 5207, the timer value is incremented and the process proceeds to the next step 5209, where it is determined whether the timer value has reached the first set value previously written in the ROM (102).

If "YES", the timer flag is set, and then the process advances to step 8213. If “NO”, step 5
The process proceeds to step 225, where it is determined whether or not a key on the operation section (1) has been operated.

If YES is determined in step 5225, the timer value is cleared to zero (step 5227), and then
Proceeding to step 5229, the timer flag is reset and the process returns to the main routine. If the determination is "No", the process proceeds to step 5229, resets the timer flag, and returns to the main routine.

In step 8213, a key (12) related to the copy multiple
It is determined whether a key other than (16) has been operated.

If “YES”, the timer value is set to the above-mentioned first setting value (step 5215).

Proceed to step 5217. If “NO”, the process advances to step 5217.

In step 5217, the timer value is set to ROM (102).
It is determined whether the second setting value written in is reached. This second set value is a reference set value for operating an auto-clear function that forcibly cancels the mode set by key operations on the operation unit (1). Y in step 5217
If ES"', reset the timer flag, clear the timer value to zero, and write RAM (1
Step S219) f&, to reset the copy prohibition flag set in the flag area of 04)
Proceed to step 5221. In step 5221, the copy key count value is cleared to zero, and the number of copies, copy magnification, copy density, etc. set by key operations on the operation unit (1) are cleared, and then the process returns to the main routine. If 'No' in step 5217, the process returns to the main routine.

Now, if it is determined "YES" in step 5107, the process proceeds to step 5109, and it is determined whether the copy magnification is 100%.If "NO", the process proceeds to step 5111, and the copy key count value becomes 2. Determine whether it has been reached. “No” in step 5107, or step 5
If “YES” is determined in step 109, step 5113
The process proceeds to step 5123, where the copy key count value is cleared to zero, and the process proceeds to step 5123.

If it is determined as ``NO'' in step 5111, the number of copies is stored in the RAM (104), and then the percentage display (8) is lit and the copy magnification is displayed blinking on the display (9). and set the copy prohibition flag. Then, the process advances to step 5121.

That is, the states of the display device (9) and the percentage display device (8) become as shown in FIGS. 5(a) to 5(b).

If it is determined "YES" in step 5111, step 511 clears the copy key count value to zero.
17), then proceed to step 5119. Step 5119
After storing the copy magnification in RAMTiO3), the percentage display (8) is turned off, the number of copies is displayed on the display (9), and the copy prohibition flag is reset. The process then proceeds to step 5121.

In step 5121, it is determined whether the copy prohibition flag is set. If “YES”, return to step 5103; if “NO”, return to step 512
Proceed to step 3.

In step 5123, a series of copying processes are performed;
Proceed to the next step 5125. In step 5125, it is determined whether continuous copying is to be performed. If "YES", the process returns to step 8123, and if "NO°'", the main routine is ended.

In this way, in this embodiment, if the timer value that starts counting after the copy is completed is greater than or equal to the first set value and less than or equal to the second set value, when the copy key (2) is operated, the display (9) is displayed. ), the copy magnification is blinking and a copy prohibition flag is set, so the copy operation is not performed, and the copy operation will only be performed when the copy key (2) is operated again.

In this embodiment, the first set value and the second set value are written in the ROM (1021), but they may be configured to be input and set using, for example, a key on the operating section or a dip switch.

(g) Effects of the Invention As described above, in the copying apparatus according to the present invention, when the currently set copying magnification is variable magnification, when the operator attempts to start a copying operation, the copying magnification is displayed blinking and Since copying operations are prohibited, a warning is given to the operator,
Moreover, copy mistakes can be prevented.

Furthermore, this warning means is only activated during the period from the elapse of a predetermined period of time after the end of copying until it is auto-cleared, so if the operator replaces the original and performs a variable size copy, regardless of the warning means, copying will be performed. It becomes possible.

Therefore, both operability and economy are improved.

[Brief explanation of the drawing]

FIG. 1 is an illustrative diagram of the operation unit of a copying apparatus with variable magnification function according to the present invention, FIG. 2 is a block diagram of the control system, and FIGS. 3A to 4B.
The figure is a flowchart for explaining the operation of this embodiment.
FIG. 5 is an illustrative diagram showing the state of the sheet number display that also serves as a magnification display when a warning occurs. (1)...Operation unit (2)...Copy key (8)
... Percentage display (9) ... Magnification display and number of sheets display (100) ... MPU f102)
...ROM (1041...RAM Fig. 8A Fig. 8B Fig. 4B Fig. 5 (a) (b)

Claims (1)

[Claims] 1. A magnification setting means for setting a copying magnification; a copy key for instructing the start of a copying process; and when the copy key is operated, the magnification set by the magnification setting means is A magnification change function comprising: a magnification determining means for determining whether the magnification is the same size; and a warning means for canceling the copy start command by the copy key when the magnification determining means determines that the magnification is not the same size. Copying equipment.