JPS5923335A - Variable magnification copying device - Google Patents

Abstract

PURPOSE:To provide a titled device with a continuous variable magnification function, and also to determine continuously and freely original size and copy size within some range, by constituting so that the other one can be determined automatically when two of size and magnification of an original or a copy are inputted. CONSTITUTION:At the time of copying of unmagnification, it is executed by a regular operation of a form size selecting key 56, etc. When designating original size and copy size, the original size is inputted by an original size input key 40 and a designating key 45, a copy size input key 41 is inputted, and thereafter, is inputted in the same way, and magnification is displayed 49. When designating the original size and magnification, the original size is as mentioned above, and the magnification is inputted by a magnification input key 42 and a registering key 47, and is displayed 49. In this case, the device selects and displays 56 automatically copying paper of prescribed optimum size. When designating the magnification and copy size, the original is displayed 48 by inputting both of them as mentioned above. As for said each case, its each input is constituted so as to be changeable at any time, so that various inputs can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an iiJ variable-magnification copying apparatus, and more specifically,
This invention relates to a iiJ variable-magnification copying device equipped with a continuous variable-magnification function.

2. Description of the Related Art Variable-magnification copying devices capable of reducing and enlarging have been known. Most of these types of copying machines are capable of printing A4 size
It is a variable-size copying machine with stages, such as 5 sizes, A4 size to B5 size, and so on.

However, the demands of users are becoming more diverse, and there is a need for a variable magnification that suits the situation of the user using the copying machine, and there are limits to the variable magnification copying machine with stages.

The present invention has been made in view of the above circumstances, and provides a variable magnification copying device that has a continuously variable magnification function and is configured so that the original size and copy size can be freely set steplessly within a certain range. The purpose is to provide equipment.

In the present invention, in order to achieve the above object, when the operator inputs two of the three elements, original size, copy size, and magnification, the apparatus automatically determines the remaining one element. A new structure was adopted.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

Figure 1 and the following diagrams explain one embodiment of the present invention.
The figure is for explaining the schematic configuration of a continuously variable magnification copying apparatus to which the present invention is applied. In the figure, reference numeral 1 indicates a document table glass, and a zoom lens 2 is arranged below it g411.

3 is a photosensitive drum, 4 is a first mirror, and 5 is a photosensitive drum.
indicates the second mirror, 6 indicates the third mirror, and 7 indicates the fourth mirror, and the image of the original reflected by the fourth mirror 7 is at the joining portion 8.
An image is formed on the photosensitive drum 3 at .

A positive charger 9 and a secondary charger 1 are located near the photosensitive drum 3.
0, a developing device 11 is arranged. Reference numerals 12 to 15 indicate paper feeding cassettes, reference numerals 16 to 19 indicate copy sheets as transfer materials, and 20 indicates a transfer charger.

Under such a structure, when a document (not shown) is placed on the document table glass 1 and a predetermined magnification m is set, the zoom lens 2 is moved in the horizontal force direction in the figure. At this time, the optical path length between the zoom lens 2 and the document, that is, the physical world ■1
1) Optical path length l]1. If the optical path length with the exposure position of the zoom lens lens optical drum 3, that is, the optical path length on the image field side is h2, then there is a relationship of h2/h, -m, and the /nod amount of the zoom lens 2 is (h, -). 12)/2, and the focal length is f
Then, 1/f-1/h, 4-1/h
Zooming is performed so that the relationship becomes 2-1/h, 10 m-1/112.

Then, when the copy start key is pressed, the photosensitive drum starts rotating in the direction shown in FIG. The second mirror 5 and the third mirror 6 unite and start moving in the same direction at a speed of 1/2 m times the final speed of the drum.

Then, the original image is formed on the photosensitive drum in the imaging section 8 by an optical projection means comprising a first mirror 4, a second mirror 5, a third mirror 6, a zoom lens 2, and a fourth mirror 7.

The photosensitive drum 3 is positively charged by a positive charger 9, and then when it reaches the imaging section 8, an original image is projected thereon, and at the same time it is charged by a secondary charger to form an electrostatic image.
The image is visualized by the developing device 11. Next, the copy paper 16 sent from one of the paper feed cassettes 12 to 15
- 19 are brought into close contact with the photosensitive drum 3, and the developed image on the photosensitive drum is transferred onto the paper by the transfer charger 20.

The copy sheets 16 to 19 that have been transferred are separated from the photosensitive drum 3 by a separation static eliminator 21, guided to a conveyor belt 29, fixed by a fixing device 23, passed through an ejection roller 24, and then delivered to a tray 2.
It is discharged at 5.

On the other hand, on the photosensitive drum 3 after the transfer, residual toner is wiped off by the cleaner 26, and the next cycle is repeated again. By specifying the required size of copy paper, you can feed the paper into the cassettes 12 to 15 containing the paper.
is selected, and the paper feed rollers 35 to 38 and the transport roller 33
, 34 transport the paper into the apparatus.

In addition, the code|symbol 21 is a front static eliminator, 28 is a power transformer, and 29
30 is the main unit side drive motor, 30 is the suction fan of the conveyance section, 31
32 is a registration roller; 32 is an electronic servo motor that drives and drives the first mirror 4, the second mirror, and the third mirror 5, 6, which are synchronized relative to the final speed of the photosensitive drum;

Incidentally, the copying apparatus to which the present invention is applied employs an operation panel 39 as shown in FIG. 2, for example.

This operation panel 39 has a document size key 40 on one side. Copy size Hitokaki-412 Magnification Hitokaki 421
Magnification fine adjustment keys 43, 44. Size specification key 45 such as A size or B size. A length designation key 46 and a number key 47 for designating the size of the original or copy by length are arranged. At the bottom, there is a document size display 482, a magnification display 49. A copy size display 5o is arranged, and clear keys 51 to 53 are arranged corresponding to each of these displays.

On the other hand, what is indicated by the reference numeral 54 is a one-copy number setting key, and below it is a one-copy number counter 55. Copy paper size selection key 56. A skin adjustment/knee 57° copy start key 58 is provided, and each copy paper size selection key 56 is provided with a cassette loading indicator lamp 59.

By the way, the magnification fine adjustment keys 43 and 44 have the following configuration.

That is, a general method for configuring the magnification is to input using the numeric keypad, but when resetting the magnification, it is necessary to press the clear key and then make a new input using the numeric keypad.

Therefore, if a mechanism for finely adjusting the magnification is provided, this effort can be saved. This mechanism is often used in audio products, especially tuners, and instead of turning a knob and adjusting the pointer on a frequency scale to select a certain frequency, it displays the frequency digitally and presses a button. The structure is such that the lowest digit displayed is counted up or down to match the desired frequency.

On the other hand, in the case of a copying machine, for example, there are cases where a copy has been made with a certain magnification set, but the user wants to make the image a little larger or smaller. In such a case, press the countdown key 43 of the magnification fine adjustment keys 43 and 44.
If you press , the countdown will start as described above, and if you press the up key 44, you can count up.

That is, at the time when two of the copy size, document size, and magnification are selected, some magnification is displayed on the magnification display 49. At this point, the magnification fine adjustment key 43
．． 44 becomes operational. This magnification fine adjustment key 43.4
For example, the number 4 is set to count up or down by 0OO1 when pressed once, and when the countdown key is pressed once at 0.700 times, it becomes 0.701. If you continue to press it, the count up and down will continue.

At this time, the counting speed of the third lower digit is extremely fast, and the counting speed should be such that the second lower digit can be visually recognized.

Input signals from the magnification fine adjustment keys 43 and 44 are sent to the control device, and as a result, the lens is zoomed, thereby finely adjusting the magnification.

Further, the document table of the copying apparatus to which the present invention is applied has a structure as shown in FIG. 3, for example. That is, in FIG. 3, reference numeral 60 indicates an original table, and reference numeral 61 indicates an original table glass. A plurality of copy paper size display lamps 62 in the horizontal direction (paper feeding direction) are arranged along two sides of the document table glass 61, and further copy paper size display lamps in the vertical direction (direction perpendicular to the paper feeding direction). 63 are arranged. Also, along with these lamps, there are a number of copy range display lamps 64 in the horizontal direction. Copy range display lamps 65 are arranged in the vertical direction.

As a method for displaying the copy size and copy range, in addition to the display method using such a lamp or the like, a method of mechanically moving a pointer or the like indicating the size and range may be adopted.

In FIG. 3, the lines indicating the size inside the document table glass 61 are drawn for convenience of explanation, and nothing is written on the actual document.

The document table having such a structure operates as follows.

First, the copy paper size input by the operator or automatically selected by the apparatus is displayed by lighting the copy paper size display lamps 62 and 63 in the horizontal and vertical directions. Next, copy range display lamp 64.
At 65, the range of the original to be copied is displayed. In the case of reduced or normal size copying, the original size (for example, up to A3) and height will be displayed by lighting, and if you have entered the magnification and copy size, the original size determined by the two will be displayed. Ru. That is, in the latter case, since the range indicated by the copy range display lamps 64, 65 is copied, the operator only has to place the document within that range and copy. Therefore, in any case, the range of the original to be copied, that is, the effective image area, will be displayed on the original table 6o.

Incidentally, the copying apparatus to which the present invention is applied is controlled by a control circuit as shown in FIG.

In FIG. 4, parts that are the same as or correspond to those in FIGS. 1 to 3 are designated by the same reference numerals, and their explanations will be omitted.

In FIG. 4, reference numeral 66 indicates a control device, and this control device includes an operating section 39. A paper size signal 67 from the paper feed cassettes 12 to 15, a document presence/absence signal 68. Original detection signal 69. A document detection signal 70 and the like when a document feeder is provided is input, and various operations as described below are performed.

The reference numeral 71 is a lens sensor, which is connected to the zoom lens 2.
is shifted by a lens drive motor 73 driven by a motor drive circuit 72, and the lens drive motor 13
The rotation of is detected by the encoder 74 and is constantly input to the control device 66 as a position detection signal.

Further, reference numeral 75 denotes a motor that drives the mirror optical system 76, and its rotation is controlled by a PLL control circuit 77, and the control command is output from the control device 66. The PLL control circuit 17 includes an optical system drive motor 75
This device detects the rotation of the oscillator 80 using an encoder 78 and a sensor 79, compares it with the frequency of the oscillator 80 of the reference θU number, and controls the rotation so that the phase difference is always zero. Also,
The PLI, control M111 circuit 77 divides the reference frequency based on a command from the control device 66, and creates a reference comparison frequency based on the command. Then, the rotation of the motor 75 is controlled so that the frequency detected by the encoder 78 matches the divided reference frequency.

The photosensitive drum 1.3 is rotated by a drive motor 81, and the rotation of this motor 81 is also controlled by an encoder 8.
2. It is detected by the sensor 83, and the PLL control circuit 84 compares the frequency θυ with the frequency of the reference frequency oscillator 85, as described above, and the control device 66 controls the frequency so that the difference becomes O.

Note that the fixing device, the developing device, and other non-driving systems 86 other than the optical system and the photosensitive drum are controlled by the motor drive circuit 87 . The drive is controlled via a drive motor 88.

Next, the operation of the multi-ear device according to the present invention configured as above will be explained.

(1) When making a full size copy, first press the copy paper size selection key 56, and the key lights up. Each copy paper size selection key 56 is provided with a cassette loading lamp 59, which is lit when a cassette of that size is loaded in the apparatus. Even if you press a key whose lamp 59 is not lit, that is, a key in which a cassette of that size is not loaded, the paper size selection key 56 itself will light up, but at the same time the 9 paper supply lamp prompts you to load the cassette. (not shown) lights up to instruct loading of a cassette of that size.

Therefore, if a cassette of this size is loaded, it will be possible, but if multiple copies are required, the number key 54 is pressed to specify. Then, adjust the concentration using the concentration adjustment lever 57.
If you make settings and press the copy start key 58, you can make a copy.Also, it is also possible to make a full size copy by using the variable size copy operation method which will be described later.

At this time, it is sufficient to specify the same size for both the original size and the COBZ/RS, or to specify the magnification as 1.

Next, the case of making a variable size copy will be explained.

(2) When specifying original size/f size and copy size.

When you press the manuscript size key 40, it lights up. Next, press one of the size designation keys 45 to designate A'' size, B size, etc., and then press the number key 47 to determine the document size.

Then, the original size display 48 displays the size A3 or B3.

Please note that the document size that can be input is 1, for example up to A3, and larger sizes (B3 or larger) or sizes that do not exist,
For example, A1.2. Even if you input B5.5 etc., the control device 6
6, when it becomes impossible to make a determination, the input stops and no further display is made.

On the other hand, if it is desired to specify the document size by length, the user does not press the size designation key 45, but instead presses the postfix number key 47 after pressing the document size input key 40. Then, the length is displayed on the original size display 48 in units of millimeters or inches. In this case, it is thought that it is easier to input the length in the paper feeding direction, but it is also possible to enter the length in the direction perpendicular to the paper feeding direction. However, in the following explanation, it will be assumed that the length in the paper feeding direction is determined manually.

Also, when changing the document size and length (secondly, by pressing the clear key 51, the input content, the document size key 40 lights up, and the original size display 48
The display will disappear and you can re-enter the information using the procedure described above.

Note that in the initial stage, each display 48 to 50
There are no examples shown.

Next, when the copy size key 41 is pressed, it lights up, and when the copy size or length is input in the same manner as described above, it is displayed on the copy size display 50. Clear key 5 if you want to change
Press 3 and re-enter.

When the above two operations are completed, a message appears on the display 49. -The ratio of the length of the original size 1 and the copy size in the paper feed direction is displayed here. If a magnification is entered at this point, the initially entered information disappears and the magnification is displayed.

That is, even after inputting two of the three elements, original size, copy size, and magnification, they can be input one after another. For example, copy size.

If the original size is entered in this order and then the magnification, the copy size input display disappears and the copy size determined by the magnification and the original size is newly displayed.

When the copy size is input as a standard paper size such as A size or B size, the key of the selected copy paper size is displayed on the copy paper selection key 56 by lighting. When the copy size is input in terms of length, the apparatus selects the minimum copy paper that can accommodate the entire length, and lights up the copy paper selection key 56 for that size.

On the other hand, if the copy paper cassette automatically selected by the apparatus is not loaded, the copy paper selection key 56 corresponding to the size of the copy paper is lit, and a paper supply lamp (not shown) is also lit.

In addition, the original size, copy size, and magnification described above
Even after two of the elements have been entered and the device has automatically selected copy paper, the size can be reselected by pressing select key 56.

In this case, the key for the newly selected size lights up, and the key for the copy paper size automatically selected by the device disappears.

Note that either the original size or the copy size may be input first.

After completing the above operations, enter the number of copies and press number key 5.
4 and presses the copy start key 58 to start copying.

(3) When specifying the original size and magnification The method of inputting the original size is the same as in the case described above. That is, the standard paper size or length is input, and then the magnification key 42 is pressed to light it up, and when the magnification is input using the number key 47, it is displayed on the magnification display 49. If you want to change the magnification, press the clear key 52 and re-enter. The range of magnification varies depending on the variable magnification mechanism.

After completing the above operations, the copy size display 50
will be displayed. If you enter a standard paper size for the document size, the length of that size in the paper feed direction multiplied by x i will be displayed, and if you specify the length for the document size, the magnification will be added to it. The multiplied length will be displayed.

At the same time, the apparatus automatically selects the minimum size copy paper that accommodates the entire length of the visible image in the paper feeding direction, and lights up and displays the copy paper size using the copy paper selection key 56.

If the entire document does not fit within the maximum copy paper size A3, or if the cassette containing the copy paper automatically selected by the device is not loaded, the A3 lamp 59 will blink in the former case, and the copy paper of that size will be displayed in the latter case. The selection key 56 lights up, and a paper supply lamp (not shown) also lights up. Of course, it is also possible to select another copy paper.

At this point, the copy size can be input in the same manner as described in (2), and the originally input contents can be replaced. Well, it doesn't matter which you enter the original size or magnification first. When the magnification is displayed on the magnification display 49, the magnification fine adjustment keys 43 and 44 are operable, and by pressing these keys, the magnification can be finely adjusted as described above. Accordingly, fine adjustments can be made by operator input or by the device to automatically copy to the selected copy sheet size.

Magnification Fine Adjustment - 1' - If you press 43 and 44 continuously and the length of the microscope image in the paper feed direction does not fit on the copy paper you are currently copying, or If the length of the paper in the paper feed direction of the optical image is adjusted to fit the size of copy paper in the lower row, the device reselects the paper size one row higher in the former case, and the paper size one row lower in the latter case. , 100% copying is possible.

(-1) When magnification and copy size are specified The manual method for magnification and copy size is the same as the method described above. Of course, you can enter either the magnification or the copy size first. In this case, the copy size can be set manually by either standard size or length.

The original size display 48 displays the length of the original to be copied in the paper feeding direction.

If you enter the original size, it will replace what you originally entered.

Magnification fine adjustment keys 43 and 44 can also be used; if the magnification is continuously increased, the area of the original to be copied becomes smaller, and if the magnification is continuously decreased, the opposite is true.

Also, if you enter the copy size as a length, the device will automatically select copy paper that will fit the entire length, and if you enter the copy size as a standard paper size, the paper of that size will be transported into the device. At the same time, the key corresponding to that size in the copy paper size selection key 56 lights up.

The above is an outline of the four roughly divided copying operations, and the specific control operations will also be explained based on the flowcharts shown in FIGS. 5 and 6, for example.

First, when the copying operation starts strongly, it is determined in step S1 whether or not there is any key human effort. If there is no key manpower, proceed to step S.

repeat. If there is key manpower, step S2
Then, it is determined whether the clear key has been pressed. If it has not been pressed, the process advances to step S3. Also, if the clear key has been pressed, step S
4 is the manuscript size.

The flags corresponding to each of the magnification and copy size are reset, and the process advances to step S3.

In step S3, it is determined whether or not the document size flag has been set. If it is determined that the document size flag has been set, the process proceeds to step S. If it has not been set, the process proceeds to step S6, in which the document size is specified. It is determined whether or not there was. If the document size is not specified, the process advances to step S5.

If the original size is specified, proceed to step S.

The document size flag is set.

Then, the process proceeds to step S8, and it is determined whether the document size is A3 size or not. If it is a dog, the process proceeds to step S, the document size flag is reset, and the process returns to step S.

If it is determined in step S8 that the document size is smaller than A3, the process proceeds to step S10, the document size is stored in the memory, and the process proceeds to step Sl+.

On the other hand, in step S5, it is determined whether or not the magnification flag is set, and if the magnification flag has been set, step S5
, 2, it is determined whether the copy size flag is set.

If it is determined in step 7'SI2 that the copy size flag is not set, step 513
It is determined whether a copy size has been specified.
If there is, the process advances to step 514 and a copy size flag is set. Then, proceed to step 515 and A3
It is determined whether the f size is a dog or not, and if it is large, the process advances to step S16, the copy size flag is reset, and the process returns to the start.

Further, if it is determined in step S1 that the copy size flag is set, and in step S13
If it is determined that no copy size has been specified, the process advances to step Sl+.

Further, if it is determined in step S15 that the copy size is not larger than A3 size, step SI
Proceed to step 7 and store in copy size memory. and,
Proceed to step Sl+.

By the way, if it is determined in step S5 that the magnification flag is not set, the process advances to steps S and 8, and it is determined whether or not a magnification has been designated.

If there is no magnification designation, the process proceeds to step S12; if there is a designation, the process proceeds to step SHI, where the magnification flag is set, and the process proceeds to step S520.

In step S20, it is determined whether or not the magnification can be set, and if it is determined that it is not possible, step S5
Proceed to 2+, the magnification flag is reset, and return to the start.

If it is determined in step S28 that the magnification can be set, the process returns to step S22 and stores the magnification in the memory.

On the other hand, in step 511, it is determined whether any two of the original size, magnification, and copy size have been selected, and if it is determined that they have not been selected (in step 511, the process returns to step S and the process is continued). If selected, the process advances to step S23. In step S23, it is determined whether or not the original size and magnification have been designated. If they have been designated, the process advances to step S24, where the copy size is determined from the original size and magnification. Calculated.

If it is determined in step S23 that there is no designation, the process proceeds to step S25, where it is determined whether or not the magnification and copy size have been specified; if it is determined that there has been, the process proceeds to step S, where the magnification and copy size are specified. Calculate the scanning distance of the original from the copy size.

Further, if it is determined in step S25 that there is a designation, the process advances to step S27, and a magnification is calculated from the document size and copy size.

On the other hand, when the copy size is calculated in step S24, the process proceeds to step S28, where it is determined whether or not there is a paper feed cassette corresponding to the calculated value.If there is not, the process proceeds to step S2.
Proceeding to step Q, the cassette with the closest size and no missing copy information is selected and displayed.Proceeding to step S30, the flags for original size, magnification, and copy size are reset.

If it is determined in step S28 that there is a cassette corresponding to the calculated cobi size, step S3
1, the cassette is selected and a display is made, and the process goes through step S30 to step S3□, where it is determined whether or not the copy button has been pressed. If it is determined that the copy button has not been pressed, the process returns to the start. If so, a copy will be made.

On the other hand, if the document size, that is, the document scanning distance is calculated in step S26, the document size is displayed in step SSS, and copying is performed through steps S and <+S32.

Further, if the magnification is calculated in step S27, the process advances to step S34, where "double a;" is displayed and the scanning speed of the lens is multiplied by "!". Control is performed to match f:, and step S. , S32, the copying is performed.

In this way, operations (2) to (4) described above are performed.

As is clear from the above description, according to the present invention, when the operator inputs two of the three elements of document size, copy size, and magnification, the remaining one element is automatically determined. To obtain a multifunctional hanging device M that can respond to the diversifying needs of users, as it adopts a configuration that allows variable magnification copying in a stepped or continuous manner. I can do it.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the present invention. Fig. 1 is a schematic configuration diagram of a copying apparatus to which the present invention is applied, Fig. 2 is a plan view of the operation panel, and Fig. 3 is a plan view of the document table. , FIG. 4 is a block diagram of the control circuit, and FIGS. 5 and 6 are flowcharts 1 for explaining the control operation. 1... Original table glass 2... Zoom lens 3.
...Photosensitive drum 9...Positive charger 10...
・Secondary charger 11...Developer 12-15...
-Paper feed cassette 20...Transfer charger 21...Separation static eliminator 23...Fixer 66...Control device 240

Claims (1)

[Scope of Claims] (1) It has input means for each of the original size, copy size, and magnification, and when two of the three elements of the original size, copy size, and magnification are input, the remaining one is input.
1. A variable-magnification copying apparatus characterized by comprising control means for automatically determining two elements in a stepwise or continuous manner. (2) The apparatus further includes a plurality of copy paper h sets, and the plurality of copy paper cassettes are automatically selected and copy paper is automatically supplied. Variable magnification 1 summer photography device. (3) The variable-magnification copying apparatus according to claim 1, characterized in that the document size is configured so that a standard size or vertical and horizontal lengths can be input. (4) The variable magnification copying apparatus according to claim 1, wherein the copy size is configured so that a standard size or vertical and horizontal lengths can be input. (5) The variable-magnification copying apparatus according to claim 1, characterized in that it is configured such that both the original size and the copy size can be input in standard size or length and width. (6) The ijJ according to claim 1, characterized in that the magnification is configured so that it can be entered numerically.
Variable-magnification transcription device. (The variable magnification copying apparatus according to claim 1, characterized in that the magnification fine adjustment means is provided in addition to the magnification input means. The variable magnification copying apparatus according to claim 7, characterized in that the variable magnification copying apparatus is configured such that it can be operated even after two of the three elements are input. A variable magnification copying apparatus according to claim 1, characterized in that it is possible to select a copy paper of a minimum size that can accommodate the entire length or width of a microscopic image. 00) Input original size and magnification. 2. The variable magnification copying apparatus according to claim 1, wherein the control means is capable of selecting a minimum size of copy paper that can accommodate the entire length and width of the visible image on the photosensitive drum. . 01) Claim 1, characterized in that the document table on which the document is placed is configured to be able to indicate the range of the document to be copied and the size of the copy paper by electrical or mechanical means. 410. The variable magnification copying apparatus according to any one of Items 410 to 410. 02. The document table according to any one of claims 1 to 10, wherein the document table on which the document is placed is provided with a scale in addition to means for indicating the document size of standard paper. Variable reproduction device. 03) Even after inputting two of the three elements (original size, copy size, and magnification), they can be input sequentially, and the input contents will be deleted in the order of input according to the elements input later. A variable magnification copying apparatus according to any one of claims 1 to 12, characterized in that: