JPH05188704A - Image forming device - Google Patents

Abstract

PURPOSE:To improve operability by setting specified magnification without providing a dedicated input key, etc., by using a magnification conversion zoom function. CONSTITUTION:When only an enlarging key 34 or a reducing key 36 is turned on in the case of zooming operation, copying magnification is successively enlarged or reduced by every 1(%) until attaining 200(%) or 50(%), for example. Meanwhile, when an unmagnification key 37 and the enlarging key 34 or the unmagnification key 37 and the reducing key 36 are in an on-state together, the copying magnification is successively set to specified magnification according to ascending order or descending order without through the zooming operation of every 1(%). Then, a microprocessor drives a magnification conversion means, and the movement of a lens and 4th and 5th mirrors to the specified magnification is finished, so that copying operation in accordance with a copying condition is performed in a main body and the same copying operation as the case of unmagnification is performed by turning on a copying key 33c by an operator.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic apparatus having a magnification conversion function, and more particularly to an image forming apparatus having a zoom function for continuously enlarging / reducing image magnification at equal intervals.

[0002]

2. Description of the Related Art In image forming apparatuses such as copying machines, in recent years, apparatuses having a multi-step copy magnification conversion function and a zoom function for continuously enlarging or reducing the copy magnification at equal intervals have been widely used. In such a device, in order to obtain a desired magnification in the zoom function, the operator continuously operates the enlargement key for continuously enlarging the copy magnification or the copy magnification until the desired magnification is set. I had to hold down the reduction key to reduce to.

For this reason, there has been a problem that as the desired copy magnification increases or the desired magnification decreases, the time for which the enlargement key or the reduction key is kept pressed becomes longer.

[0004]

Conventionally, when setting a magnification that is relatively frequently used, there is a case where a zoom function is used and a case where a middle input means for setting a specific magnification is used. It was Of these, the operator has to continue to press the enlargement key or the reduction key at the time of setting the specific magnification by the zoom function, and there is a problem that the setting takes time and labor. On the other hand, in the case of using the separately provided key input means for setting the specific magnification, the setting operation itself is extremely simple, but the device purposely provides the input means, resulting in a large size and high cost. was there.

In view of the above, the present invention eliminates the above-mentioned problems, and it is possible to easily set a specific magnification without continuously pressing a key and at the same time without providing a separate key input means for setting a specific magnification. It is an object of the present invention to provide an image forming apparatus that shortens the setting time when setting the image magnification and improves the operability.

[0006]

In order to solve the above-mentioned problems, the present invention provides an image forming apparatus having a magnification conversion means, in which the image magnification of the magnification conversion means is set to a first value by a feeding operation.
And a second key input for setting the image magnification of the magnification conversion means to be continuously reduced by the first magnification value. Means, a third input means for inputting predetermined information relating to image formation, and a closing operation of both the first key input means or the second key input means and the third input means. An image forming apparatus comprising: a control means for setting a magnification conversion means to one of a plurality of specific magnifications with a second magnification value having a magnification width larger than the first magnification value. To do.

Further, in the image forming apparatus having the magnification converting means, the first key inputting means for setting the image magnification of the magnification converting means so as to continuously increase by the first magnification value by the inserting operation, and the inserting operation. Second key input means for setting the image magnification of the magnification conversion means to be continuously reduced by a first magnification value, third input means for inputting predetermined information relating to image formation, The magnification conversion means is operated with a second magnification value having a magnification width larger than the first magnification value by the closing operation of both the first key input means or the second key input means and the third input means. An image forming apparatus, comprising: a control unit that sets a specific magnification that minimizes the second magnification value among a plurality of specific magnifications. I will provide a.

[0008]

According to the present invention, the above-mentioned means is performed by utilizing the magnification conversion zoom function, and the specific magnification can be set immediately without providing a dedicated input key or the like, and the operability is improved by shortening the setting time. I can do things.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic explanatory view of an image forming apparatus 10, which has a magnification conversion means, and a photoconductor at a substantially central portion of a main body 11 having an image forming process means 1 for charging, exposing, developing, transferring, cleaning, fixing, etc. Around the drum 12, a charging device 13, an exposure position 14a by an optical device 14, a developing device 16, a transfer peeling charger 17, a cleaning device 1
8, a static elimination lamp 20 is provided. Further, on the right side of the main body 11, cassettes 21a and 21b for accommodating the sheet P and a manual paper feed table 21c are provided. And the body 11
Inside, cassettes 21a, 21b, manual paper feed table 21c
A sheet conveyance path 24 is formed to guide the sheet paper P taken out from the pickup roller 22a, 22b, 22c and fed to the sheet discharge tray 23 on the left side of the main body through the photosensitive drum 12. The photoconductor drum 1 of the paper transport path 24
A registrar roller pair 26 is provided on the upstream side of 2, and a conveyor belt 27, a fixing roller pair 28, and a paper discharge roller pair 30 are provided on the downstream side.

The optical device 14 has a minimum image magnification of 50.
The lens 14e and the fourth and fifth mirrors 14f and 14g are moved by the magnification conversion means (not shown) so as to have a zoom function from [%] to a maximum image magnification of 200 [%], and the original table 31 is moved. First to third mirrors 14b to 1
The first optical path length 15a reaching the lens 14e via 4d and the fourth to sixth mirrors 14f to 14h from the lens 14e.
To the exposure position 14a of the photosensitive drum 12 via the second
The ratio of the optical path length 15b is changed.
Reference numeral 32 is a document cover that covers the document table 31.
Further, an operation panel 33 is provided on the upper surface of the main body 11, and this operation panel 33 is provided with a message display panel 33a for displaying a magnification, a message, and the number of sheets, and a display panel 33b for displaying the operation state of the main body 11. There is.

Further, a copy key 33 is provided on the operation panel 33.
c, a numeric keypad 33d, a paper size setting key 33e, a document size key 33f, etc. are provided, and an enlargement key 34 as a first magnification input means and a reduction key 36 as a second magnification input means for performing a zoom operation. , And an equal magnification key 37 which is a third input means is provided.

FIG. 3 is a block diagram of a control device 38 which is a control means. The microprocessor 38a has a copy key 33c on the operation panel 33 and an enlargement key 3 on its microprocessor 38a.
4, various operation keys 4 such as the reduction key 36, the same size key 37, etc.
4 or various switches / sensors 34 for detecting the paper feed timing and the like, detecting the toner concentration in the developing device 16, and detecting the automatic exposure are connected via the input interface circuit 41. On the other hand, the microprocessor 38a
Drives the photosensitive drum 12 of the image forming process means 1 of the main body 11, the developing device 16 and the like through the output interface circuit 42, and a magnification conversion means (not shown).
Is connected to a main body drive unit 43 for driving, a message panel 33a on the operation panel 33, a display panel 33b, and the like,
It controls it.

Next, the operation will be described. At the start of copying, normally, on the message display panel 33a, the copy magnification [100%], the number of copies [1], and the message "copy size" are displayed. In such a state, the operator inputs necessary copy conditions on the operation panel 33.

That is, in the case of copying one copy at the same size, when the paper size is selected by the paper size setting key 33e, the copy key 33c is turned on to immediately start copying. As a result, in the main body 11, the photosensitive drum 12
Is rotated and is uniformly charged by the charging device 13 in accordance with the rotation, and an electrostatic latent image of the same size as the original is formed at the exposure position 14a. Next, the photosensitive drum 12 is developed and visualized in the developing device 16, and reaches the transfer peeling charger 17. On the other hand, in synchronization with this, the cassette 21
The paper P of the size selected from a and 21b is supplied to the transfer position, the toner image on the photosensitive drum 12 is transferred,
Further, the paper P separated from the photoconductor drum 12 is conveyed to the fixing roller pair 28 side and fixed to complete a copy image, and then is discharged onto the paper discharge tray 23 by the paper discharge roller pair 30. On the other hand, after the transfer is completed, the photoconductor drum 12 is made ready for the next copy through the cleaning device 18 and the static elimination lamp 20, and the message display panel 33a displays “COPY FULL”, and the copy operation is completed.

When the copy size is not the same size but the paper size and the document size are standard sizes, the copy ratio is automatically set by selecting the paper size setting key 33e and the document size 33f, respectively. The set copy magnification is displayed on the message display panel 33a. That is, for example, if the paper is [A. 4] size,
Copy the manuscript [A. 3] When the size is selected, the copy ratio 71 [%] is displayed on the message display panel 33a,
Further, the microprocessor 38a of the control device 38 drives a magnification conversion means (not shown), and a drive motor (not shown) drives the lens 1 so that the copy magnification is 71%.
4e and the 4th and 5th mirrors 14f and 14g are moved, respectively. As a result, the main body 11 can be copied in accordance with the copy conditions, and "copy size" is displayed on the message display panel 33a. After that, the copy key 33c is turned on by the operator, and the same copy operation as that at the same magnification is performed.

Next, a case will be described in which the enlargement key 34, the reduction key 36, and the same size key 37 are used to perform magnification conversion by a zoom operation. At the start of copying, the operator inputs copy conditions such as the number of copies from the ten-key pad 33d and the paper size from the paper size setting key 33e.
4. When the reduction key 36 or the same size key 37 is turned on,
In the microprocessor 38a of the control device 38, the magnification setting routine shown in the flowchart of FIG. 4 is started and the routine proceeds to step 60. In step 60, it is compared whether or not the same size key 37 is turned on. If it is turned on, the process proceeds to step 61, and if it is not turned on, the process proceeds to step 62. In step 61, it is further compared whether or not the reduction key 36 is turned on. If it is turned on, the process proceeds to step 63, and if it is not turned on, the process proceeds to step 64. That is, when both the same size key 37 and the reduction key 36 are turned on, in step 63, a magnification determination process 1 to be described later is executed and the magnification setting routine ends.
In step 64, it is compared whether or not the enlargement key 34 is turned on. If it is turned on, the process proceeds to step 66. If it is not turned on, the process proceeds to step 67. If both the same size key 37 and the enlargement key 34 are turned on, a magnification determination process 2 to be described later is performed in step 66.
Is executed and the magnification setting routine ends. When only the same size key 37 is turned on, the copy magnification is set to 100% in step 67, the flow proceeds to step 69, the copy magnification 100% is displayed, and the magnification setting routine ends.

On the other hand, in step 62, it is compared whether or not the reduction key 36 is turned on. If it is turned on, the process proceeds to step 68. If it is not turned on, step 7 is performed.
Go to 1. In step 68, it is compared whether or not the current copy magnification is the minimum image magnification of 50 [%], and if it is not 50 [%], the process proceeds to step 70. In step 70, the copy magnification is set to the current copy magnification minus 1%, the copy magnification minus 1% is displayed on the message display panel 33a, and the process returns to step 62. While the reduction key 36 is turned on, the minimum image magnification is 50 [%].
Step 62 to step 70 will be repeated until it reaches. If the copy magnification reaches 50 [%] while repeating steps 62 to 70, the process proceeds from step 68 to step 69, and the display panel 33a displays 5%.
0% is displayed, and the magnification setting routine ends.

Next, in step 71, it is compared whether or not the enlargement key 34 is turned on. If it is turned on, the process proceeds to step 72. If it is not turned on, the magnification setting routine is ended. In step 72, it is compared whether or not the current copy magnification is the maximum image magnification of 200 [%], and 2
If it is not 00 [%], the process proceeds to step 73. Step 73
Then, 1 [%] is added to the current copy magnification and the copy magnification obtained by adding 1 [%] is displayed on the message display panel 33a, and the process returns to step 71. Then, while the enlargement key 34 is turned on, steps 71 to 73 are repeated until the maximum image magnification of 200 [%] is reached. While repeating steps 71 to 73, the copy magnification is 2
When it reaches 00 [%], step 72 to step 69
Then, the display panel 33a displays 200%, and the magnification setting routine ends.

Subsequently, the magnification determination processes 1 and 2 will be described with reference to FIGS. First, in the magnification determination process 1, it is determined in step 80 whether or not the current magnification is larger than 141%. If it is larger than 141%, the process proceeds to step 81. If it is 141 or less, the process proceeds to step 82. In step 81, the specific magnification of 141% is set on the display panel 3
After displaying on 3a, the process proceeds to step 83. Step 83
Then, it is determined whether or not the same size key 37 and the reduction key 36 are in the inserted state.
No. 4, go to step 85,
The magnification is set to 141%, and this processing 1 ends. In step 84, it is determined whether or not 2 seconds have passed since the display of the magnification 141% was started. If it has passed, the process proceeds to step 86, and if it has not passed, the process returns to step 83 again. .. That is, step 83 and step 84
Then, it is judged whether or not the continuous input state of the equal magnification key 37 and the reduction key 36 is continued for 2 seconds after the display of the magnification 141% is started. If it is continued, the display magnification is immediately lowered in step 86. The specific magnification is changed to 122%, and if it is not continued, the magnification is set to the display magnification and the process 1 is ended. Then, further step 87
If it is determined that the same size key 37 and the reduction key 36 are continuously pressed for 2 seconds at 88 and 88, the display is controlled to be changed to 100% which is a specific magnification below 122%.
As described above, first, the steps 80 and 8 described above are performed.
2, including step 89, step 90 and step 9
The range of the current magnification value is determined by 1 and the magnification corresponding to that is determined in step 81 and step 8.
6, step 92, step 93, step 94 and step 95. Then, step 83 and step 84, step 87 and step 8 which become a pair respectively
8, step 96 and step 97, step 98 and step 99, and step 100 and step 101,
The time when the same size key 37 and the reduction key 36 are continuously input is determined, and control is performed so as to proceed to the step of changing the display to a specific magnification smaller than the magnification currently being displayed or the step of determining the magnification. FIG. 6 shows magnification determination processing 2. The basic flow is almost the same as the magnification determination process 1 of FIG. The process 1 is different from the process 1 in the scaling factor determination process 2. When the current scaling factor is determined, the specific scaling factor immediately below is displayed, whereas when the current scaling factor is determined, it is immediately above. This is a point to display the specific magnification of. The outline of this process is as follows: Step 110, Step 11
1, step 112, step 113 and step 11
4 determines which range the current magnification value is in, and the magnification corresponding to it is determined in steps 115 and 1
16 Step 117, Step 118, Step 11
9 and step 120. Then 1 each
Steps 121, 122, and 1 that form a pair
23 and step 124, step 125 and step 12
6, step 127 and step 128 and step 12
9. In Step 130, the time when the same size key 37 and the enlargement key 34 are continuously input is determined, and the step of changing the display to a specific magnification larger than the specific magnification currently being displayed or the step 131 of determining the magnification. Controlled to proceed. That is, when the zoom operation is performed, the enlargement key 34 is simply used.
Alternatively, when only the reduction key 36 is turned on, the copy magnification is sequentially increased or reduced by 1 [%] until it reaches 200 [%] or 50 [%], respectively.
On the other hand, the same size key 37 and the enlargement key 34 or the same size key 3
When both 7 and the reduction key 36 are in the ON state, the copy magnification is sequentially set to the specific magnification according to the ascending order or the descending order without performing the zoom operation for each 1 [%].

In this way, the copy magnification is set by the zoom operation, the microprocessor 38a drives the magnification converting means, and the lens 14e and the fourth and fifth mirrors 1 are driven.
After moving 4f and 14g to a predetermined magnification, the main body 11
Then, it becomes possible to perform a copy operation according to the copy conditions, and the message display panel 33a displays "copy complete".
Is displayed, and the operator operates the copy key 33c to perform the same copy operation as in the case of the normal size.

With this configuration, even when the copy magnification is set by the zoom operation, the enlargement key 34 or the reduction key 36 together with the equal magnification key 37 are turned on to set the specific magnification immediately. It can be done, the waiting time for each setting is shortened, and the operability is significantly improved. Moreover, the specific magnification can be set by turning on the same size key 37 together with the conventionally used enlargement key 34 or reduction key 36, and it is not necessary to additionally provide an operation key for the specific setting, and the cost can be reduced. It will not be damaged.

The present invention is not limited to the above embodiment, and various design changes are possible. For example, the structure of the operation panel is arbitrary, and the third input is used for setting the maximum or minimum copying magnification. The means may be one of ten keys instead of the same size key, or a new operation key may be provided if space or cost allow. Further, the size of the specific magnification set during the zoom operation is not limited to the present embodiment, and may be changed, for example, every 10% as the specific magnification.

[0023]

As described above, according to the present invention, when the magnification is converted using the zoom function, the first magnification input means for enlarging the image magnification or the second magnification input means for reducing the image magnification are provided together. , The specific magnification can be set immediately by turning on any third input means, and it is necessary to continue to press the first magnification input means or the second magnification input means in order to set the specific magnification as in the conventional case. Therefore, the setting time and setting time of the specific magnification can be remarkably shortened and the operability is improved as compared with the related art without increasing the cost.

[Brief description of drawings]

FIG. 1 is a schematic explanatory diagram of an image forming apparatus main body.

FIG. 2 is a plan view of an operation panel.

FIG. 3 is a block diagram of a control device.

FIG. 4 is a flowchart showing a magnification setting routine.

FIG. 5 is a flowchart for explaining magnification determination processing 1.

FIG. 6 is a flowchart for explaining magnification determination processing 2.

[Explanation of symbols]

11 ... Main body, 14 ... Optical device, 33 ... Operation panel, 33
a ... Message display panel, 34 ... Enlargement key, 36 ... Reduction key, 37 ... Same size key, 38 ... Control device

Claims (2)

[Claims] 1. An image forming apparatus having a magnification conversion means, a first key input means for setting an image magnification of the magnification conversion means so as to continuously increase by a first magnification value by a closing operation, and a closing operation. Setting the image magnification of the magnification conversion means so as to continuously reduce by the first magnification value.
Key input means, third input means for inputting predetermined information relating to image formation, and input of both the first key input means or the second key input means and the third input means. An image forming apparatus comprising: a control unit configured to set one of a plurality of specific magnifications by a second magnification value having a magnification width larger than the first magnification value by an operation. apparatus. 2. An image forming apparatus having a magnification conversion means, a first key input means for setting the image magnification of the magnification conversion means to be continuously increased by a first magnification value by a loading operation, and a loading operation. Setting the image magnification of the magnification conversion means so as to continuously reduce by the first magnification value.
Key input main acid, third input means for inputting predetermined information relating to image formation, both the first key input means or the second key input means and the third input means. A control means for setting the magnification conversion means to a specific magnification that minimizes the second magnification value out of a plurality of specific magnifications with a second magnification value having a magnification width larger than the first magnification value by a closing operation. An image forming apparatus comprising: