JPH0756560B2 - Copying device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying apparatus having a variable magnification copying mechanism capable of continuously forming a variable magnification image in a preset magnification range.

[Conventional technology]

Conventionally, the scaling function in this type of device has a fixed scaling mode and a continuous scaling mode, and according to the operator's mode designation,
For example, a copy image having a desired scaling ratio can be obtained according to a fixed reduction from A4 size to B5 size or a scaling ratio of a step size input from a scaling setting switch or the like.

[Problems to be Solved by the Invention] However, the magnification range set in the apparatus having the above-described function is usually limited to about 50% to 200%. To obtain an image enlarged to 100%, the operator needs to enlarge the copied image once enlarged to 200% to 150% to obtain a copied image of 300%. (Magnification) must be calculated in advance, and if magnification is strictly specified, it will be forced to retake copies for image matching, resulting in complicated operations and paper waste. was there.

The present invention has been made to solve the above problems, and when a scale factor of a copy image that exceeds a preset continuous scale factor setting range is input, the scale factor within the scale factor range is optimal. To provide a copying apparatus capable of automatically calculating and displaying a combination of a first magnification, a minimum number of consecutive times thereof and a second magnification to be multiplied, and obtaining a copy image of a desired magnification with a minimum number of times of image formation. With the goal.

[Means for solving problems]

A copying apparatus according to the present invention includes a magnification setting unit capable of inputting and setting an arbitrary scaling factor within a range of a prescribed scaling factor, a first display unit for displaying the scaling factor, and a second unit for displaying the number of sheets. Display means, a minimum number of consecutive times that can be realized according to a scaling factor out of the setting range input from the scaling factor setting means so as to fall within the allowable range of the scaling factor, and a first scaling factor used at this minimum number of consecutive times. And a magnification calculating means for calculating a magnification ratio which is a combination of the first magnification and a second magnification which is further multiplied, and a control means for controlling so as to realize copying of the magnification ratio. , The first display means can switch and display a combination of the minimum number of consecutive times that can be realized according to the out-of-range change magnification input from the magnification setting means, and a combination of a first magnification and a second magnification. Sir Together, wherein the second display means is obtained by enabling display switching a message requesting replacement of the original.

[Action]

According to the present invention, when an out-of-set range changing magnification exceeding a preset magnification value is input from the multiplying-factor setting means, the multiplying-factor calculating means can realize the minimum consecutive number of times that can be realized in accordance with the inputted out-of-setting-range changing magnification. And a calculation for combining the first magnification with the second magnification, and the result is displayed on the first display means as a combination of the first magnification and the minimum number of consecutive times and the second magnification that can be realized within a preset magnification range. And a message requesting conversion of the original is displayed on the second display means.

〔Example〕

FIG. 1 is a control block diagram of a copying machine showing an embodiment of the present invention, in which 1 is a control unit main body, 2 is a CPU (central processing unit) which also serves as a magnification calculation means of the present invention, for example, manufactured by Intel Corporation. 8085 chips are used. An interrupt controller 3 uses, for example, an Intel 8259 chip, and receives a drum clock and the like. A RAM 4 has a capacity for storing random data, for example, 2 Kbytes. A ROM 5 stores the control program of the CPU 2. Reference numeral 6 is an I / O port controller, which uses, for example, an Intel 8255 chip. Reference numeral 7 is data / advice, which exchanges addresses 2-6 and data with each other.

FIG. 2 is a block diagram showing the construction of a copying machine showing an embodiment of the present invention.

In this figure, reference numeral 11 denotes a system controller, which is composed of a control unit main body 1, an input / output interface (not shown), and the like. Reference numeral 12 is an optical system sensor, 13 is a drum clock, and 14 is an operation unit for setting the magnification, the number of sheets, and the density. A state sensor 15 detects various states such as the presence or absence of recording paper and toner, and the temperature of the fixing heater. A potential sensor 16 detects the potential of the drum or the like. A display unit 17 displays the magnification, the number of sheets, and the density set by the operation unit 14. Reference numeral 18 denotes a drum driving unit that drives the photosensitive drum. A high-voltage controller 19 controls the voltage applied to the charger. A paper feeding unit 20 feeds a recording paper from a paper feeding cassette, for example, in synchronization with the scanning of the original. Reference numeral 21 denotes an optical system driving unit which drives a document scanning unit (not shown) in a predetermined direction.

In the copying apparatus configured as described above, when a magnification outside the preset range exceeding the preset magnification range is inputted from the magnification input means (operation section 14), the magnification calculation means (control section 1 in the system control 11). ) Calculates the first magnification, the minimum number of consecutive times and the second magnification, and the control means (control unit 1) performs the variable magnification copying operation based on the calculated first magnification, the minimum number of consecutive times and the second magnification. Is controlled, it is possible to obtain a copy image of a desired magnification with the minimum number of times of image formation only by inputting a magnification outside the magnification range.

FIG. 3 is a plan view of the operation unit 14 shown in FIG.
Is a copy key, and 32 is a ten-key for setting the copy magnification and the like, and for inputting the number of copies and the like. 33 is a clear key, which clears the input from the numeric keypad 32. Reference numeral 34 denotes a display device which is a second display means, and displays a set number of sheets, a paper jam position, and a message requesting document conversion described later. 35
Is a fixed enlargement key, for example, enlarges A4 size to A3 size. 36 is the same size key, and sets the copy magnification to 100%. 37
Is a fixed reduction key, for example, to reduce A3 size to A4 size. Reference numeral 38 denotes a magnification setting key which serves as a magnification setting means. Each time the + portion is pressed, the magnification is incremented by 1% and the maximum magnification can be set to 142%, for example. Also, each time the minus part of the magnification setting key 38 is pressed, the magnification is counted down by 1% and the minimum magnification of 65% can be set. 39 is a magnification display, which displays the magnification with the magnification setting key 38 in%. When the power is turned on, the same size is displayed, that is, 100% is displayed. Reference numeral 40 denotes a display for displaying a magnification as the first display means of the present invention, which displays a message of characters or numbers by a dot matrix such as liquid crystal. Further, the display 40 has an entry key 40a for entering the displayed content. 41 to 45 are mode setting keys, and when the mode setting key 41 is pressed, a copy mode that can be set is displayed on the display 40. When the mode setting key 42 is pressed, the double-sided copy mode is set. Further, when the mode setting key 44 is pressed, the copy mode outside the magnification range is set.

Next, referring to FIGS. 4 (a) to 4 (e), the display
The display operation of 40 will be described.

4A to 4E are schematic diagrams for explaining the display operation of the display 40 shown in FIG. 3, and FIG. 4A shows the display state when the mode setting key 41 is pressed, FIG. 7B shows the display state when the mode setting key 44 is pressed, and the underlines UL1 to UL3 are displayed in blinking. The figure (c) shows the state in which the out-of-range magnification (other than 64-142%), for example, 500% is set by the ten key 32, and the figure (d) shows the magnification shown in the figure (c) by the entry key 40.
In response to step a, the CPU2 displays the combination of the minimum possible magnification value and the copy magnification. For example, 1.42 ⁴
Display x1.23 x 100% as 142% x 4 + 123%. In the figure (e), the numeric keypad 32 is used to zoom out of the magnification range, for example 30%.
6 shows a state in which the copy magnification is displayed in combination with the minimum feasible magnification value when is set.

First, the mode setting key 41 is pressed to display the character information on the display 40 as shown in FIG. 4 (a). Here, when the operator presses the mode setting key 44, the underlines UL1 to UL3 are displayed in a blinking manner as shown in FIG. 4 (b), and the magnification information from the ten key 32 is waited, for example, 50
When 0% is input (see FIG. 4 (c)), when the operator confirms this magnification and presses the entry key 40a, C
A state in which PU2 displays a combination of the minimum number of consecutive times that can realize a magnification outside the magnification range (500% in this example), the first magnification used in this minimum consecutive number, and the second magnification to be further multiplied by this first magnification. , I.e. 1.42 ⁴ x 1.23 x 100%,
It is displayed as 142% × 4 + 123% (see FIG. 4 (d)). This is to notify the operator that if the copy of 142% is performed four times and the copy of 123% is performed once, the copy of 500% (1.42 ⁴ × 1.23 = 5.001) can be obtained. At this time, the CPU 2 automatically sets the copy magnification to 142% and waits for the copy key 31. Then, when an unillustrated original is placed on the original placing table and the copy key 31 is pressed, a 142% enlargement copy is started, and after the copy is completed, "H06" is displayed on the display 34.
(Abbreviated symbol that means that the original is replaced and the copy key 31 is pressed) is displayed, and the next copy key 31 is waited. Then, similarly, “H06” is displayed on the display 34. For this reason, the operator replaces the copied sheet with the original placed on the original placing table, places it as the next original, and waits for the copy key 31 to be pressed. When this copying is completed, "H06" is displayed on the display 34 in the same manner, the enlargement ratio is automatically changed from 142% to 123%, and the next copy key 31 is waited. In this way, the desired out-of-range magnification can be achieved with the smallest number of times that can be realized. Similarly, in the state shown in FIG. 4 (b), when the operator inputs 30% from the numeric keypad 32, the CPU 2 calculates the out-of-setting magnification and the first realization of the minimum feasible number of times. The second magnification is 64% × 2 + as shown in FIG. 4 (e).
Display in combination with 73%. This means that if you make 2 copies of 64% and 1 copy of 73%, you get 30% (0.64 ² × 0.73 =
0.299) to inform the operator that a copy will be obtained.

Next, the magnification setting operation outside the setting range will be described with reference to FIG.

FIG. 5 is a flow chart for explaining a setting operation when a magnification outside the setting range is input. In addition, (1) to (18)
Indicates each step. Further, a case will be described where 500% is set for enlargement and 30% is set for reduction when the magnification is out of the setting range. Furthermore, the letters in the figure indicate the registers.

First, when the entry key 40a is pressed, it is judged whether or not the magnification input to the ten key 32 exceeds 100% (1). If it exceeds 100%, that is, enlargement copy outside the magnification range is set. If this is the case, set the repeat counter “1” that counts the number of 142% copies (2), and store the magnification “500” out of the magnification range input from the numeric keypad 32 in the DE register provided in the predetermined area BUF of RAM4. (3), then divide the DE register contents by 1.42,
As a result, it is stored in the DE register (4). Next, it is judged whether the content of the DE register is 142 or less (5). If NO, that is, if it is larger than 142%, "1" is added to the repeat counter and the process returns to step (4) (6).

On the other hand, in the determination of step (5), YES, that is, 142%
In the following cases, 123% is stored as the final magnification in the predetermined area BUF on the RAM 4 in the following cases (7). Then
As shown in FIG. 4 (d), the magnification is displayed on the display 40 outside the range, and 142% is displayed on the magnification display 39 to end the control (8).

On the other hand, if it is determined in step (1) that the magnification input to the numeric keypad 32 does not exceed 100%, that is, if reduction copying outside the setting range is set, a repeat counter that counts the number of 142% copies is displayed. "0" is set (9), then 100 is stored in the DE register (10), and DE
Multiply the register contents by "0.64" and store the result in the DE register (11). Next, it is determined whether the contents of the DE register are less than or equal to the magnification input with the numeric keypad 32,
(12), NO, that is, the DE register content is the numeric keypad 32
If it is larger than the input magnification, the contents stored in the DE register in step (11) are stored in the BC register on the RAM 4 (13). Then, "1" is set in the repeat counter and the process returns to step (11) (14).

On the other hand, if the result of determination in step (12) is YES, that is, if the contents of the DE register are equal to or less than the magnification input by the numeric keypad 32, the contents of the BC register are transferred to the DE register (15), then , Magnification value “30” input with ten keys 32 is set in DE register (“41” in this case)
Divide by the result, that is, the final magnification value (73%)
Store in DE register (16). Then, the content of the DE register is stored in the predetermined area BUF as the final magnification, and 73% is stored (1
7). Next, as shown in FIG. 4 (e), the display 40 displays the magnification outside the magnification range, the magnification display 39 displays 64%, and the control ends (18).

Next, an image forming operation with a magnification other than the magnification range according to the present invention will be described with reference to FIG.

FIG. 6 is a flow chart for explaining the image forming operation according to the present invention. Note that (1) to (13) indicate each step.

First, when the copy key 31 is pressed, it is determined whether or not the scaling mode outside the magnification range is set (1), YES
If so, the process proceeds to step (4). If NO, that is, if the normal copy mode is set, the scaling is set according to the set magnification value (2). Then, the content of the display 34 is switched from "H06" to the normal number display (3). Then, the normal copy sequence is executed (4), and after the copy is completed, it is judged whether the copy sequence is the normal copy sequence (5). If NO, the control is ended and YES
Then, it is further judged whether or not the END flag indicating the end of the final copy is "1" (6). If it is "1", the out-of-range variable magnification mode is cleared and the control is ended (7).

On the other hand, if NO in step (6), it is further determined whether the content of the repeat counter is "0" (8). If YES, that is, if copying at the maximum or minimum magnification is completed. For example, the END flag is set to "1" (9), and the magnification stored in the predetermined area BUF is displayed on the magnification display 3
9 is displayed (10), "H06" is displayed on the display 34, and control is terminated (11).

On the other hand, if the judgment in step (8) is NO, the content of the repeat counter is decremented by "1" (12), and "H0" is displayed on the display unit 34.
6 ”is displayed and the control ends (13).

In the above embodiment, the case where the out-of-range scaling mode is set when the mode setting key 44 is pressed has been described, but a scaling factor in which the scaling factor exceeds the maximum and minimum scaling factors specific to the apparatus is set. It may be configured such that it is automatically set at the point of time. Further, in the above embodiment, the model in which the maximum magnification and the minimum magnification can be set from 64% to 142% has been described as an example, but the invention is not limited to this magnification, and the maximum magnification and the minimum magnification unique to each device can be set. It is only necessary to set a combination magnification corresponding to the above.

〔The invention's effect〕

As described above, according to the present invention, a magnification setting means capable of inputting and setting an arbitrary scaling factor within a range of a prescribed scaling factor, a first displaying means for displaying the scaling factor, and a first number for displaying the number of sheets. A second display means, a minimum number of consecutive times that can be realized in accordance with a scaling factor out of the setting range that is input from the scaling factor setting means so as to fall within the allowable range of the scaling factor, and a first number used in this minimum number of consecutive times. A copying apparatus including a scaling factor calculating unit configured to calculate a scaling factor that is a combination of a scaling factor and a second scaling factor that is further multiplied by the first scaling factor, and a control unit that controls to realize copying of the scaling factor. In the first display means, a combination of the first consecutive magnification and the second consecutive magnification, which is achievable in accordance with the out-of-range variation magnification inputted from the magnification setting means, is switched and displayed. Possible In addition, since the message requesting replacement of the original can be switched and displayed on the second display means, the realization of the variable magnification outside the setting range is combined within the limited variable magnification setting range and the numerical value is inputted. Since it is possible to obtain a copy image with the desired magnification with the minimum number of image formations,
An accurate scaled image with little paper waste can be obtained by a simple operation. Then, the first display unit displays the first magnification, the minimum number of consecutive times, and the second magnification, and the second display unit displays a message requesting conversion of the document. The procedure has only to be advanced according to the display of, and has an excellent advantage that the operation is very easy to understand.

[Brief description of drawings]

1 is a control block diagram of a copying machine showing an embodiment of the present invention, FIG. 2 is a block diagram of a copying machine showing an embodiment of the present invention, and FIG. 3 is an operating section shown in FIG. 4A to 4E are schematic views for explaining the display operation of the display shown in FIG. 3, FIG. 5 is a flowchart for explaining the magnification setting operation outside the magnification range, and FIG. 6 is a flowchart illustrating an image forming operation according to the present invention. In the figure, 1 is a control unit body, 2 is a CPU, 3 is an interrupt controller, 4 is RAM, 5 is ROM, 6 is an I / O port controller, 7 is a data / address bus, 11 is a system controller, and 12 is an optical system. Sensor, 13 is a drum clock, 14 is an operation unit, 15 is a state sensor, 16 is a potential sensor, 17 is a display unit,
18 is a drum drive unit, 19 is a high voltage controller, 20 is a paper feed unit, 21 is an optical system drive unit, 31 is a copy key, 32 is a numeric keypad, 33 is a clear key, 34 is a display unit, 35 is a fixed enlargement key,
36 is the same size key, 37 is a fixed reduction key, 38 is a magnification setting key,
Reference numeral 39 is a magnification display, 40 is a display, 40a is an entry key, and 41 to 45 are mode setting keys.

Claims (1)

[Claims] 1. A magnification setting means capable of inputting and setting an arbitrary magnification ratio within or outside a prescribed magnification range, a first display means for displaying the magnification ratio, and a second display means for displaying the number of sheets. A minimum continuous number that can be realized in accordance with an out-of-set scaling factor input from the scaling factor setting unit so as to fall within the allowable range of the scaling factor, and a first scaling factor used at this minimum consecutive number, A copying apparatus comprising: a magnification calculation means for calculating a magnification change, which is a combination of a first magnification and a second magnification, and a control means for controlling the copying of the magnification. The one display means can switch and display the combination of the minimum number of consecutive times that can be realized according to the out-of-set range change magnification input from the magnification setting means, and the first and second magnifications. ,Previous The second display means, a copying apparatus which is characterized in that to enable display switching a message requesting replacement of the original.