JPS61105533A - Image forming device - Google Patents

Abstract

PURPOSE:To form an image forming device superior in operability by displaying directly and quantitatively an image forming range or non-forming range through an original platen. CONSTITUTION:The first carriage 411 and needles 51 and 52 are driven in accordance with a set magnification to display the image forming range, and the first carriage 411 is driven to display the image non-forming range used as, for example, a binding margin in the left or the right of a copied picture. The forming position and breadthwise dimensions of this image non-forming range (binding margin) are set by the operation of an operation key 30a or 30b on an operation panel 30, and set breadthwise dimensions are displayed not only on a display part 30c but also on an original platen 2 by a moving scale 53 provided on the first carriage 411 and a fixed scale 21 provided on the original platen 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image forming apparatus applied to, for example, an electronic copying machine.

[Technical background of the invention and its problems]

As is well known, in recent years, electronic copying machines have been developed that have a function of reducing or enlarging a document image, or a function of creating an area where no image is formed to be used as a binding margin. However, these copying machines only quantitatively display the non-formation range of the image on the operation panel when the set copy magnification is set, so the operator has no control over how the original image is copied onto the paper. Will it be done?lI#iI! It was difficult.

Furthermore, since these displays are displayed on the operation panel, the operator must visually check both the document table and the operation panel when setting a document on the document table, which poses a problem in operability.

[Purpose of the invention]

This invention has been made based on the above circumstances, and its purpose is to be able to directly and quantitatively display the image formation range or non-image formation range through the document table, and to provide ease of operation. The purpose of the present invention is to provide an image forming apparatus with excellent performance.

[Summary of the invention]

The present invention uses, for example, a first carriage and a fixed scale provided on the document table to display the image formation range or non-formation range, and also provides a copying magnification that corresponds to the image formation range or non-formation range on the first carriage. Alternatively, a display section that quantitatively displays the width dimension is provided.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

7 and 8 schematically show an image forming apparatus, such as a copying machine, according to the present invention.

That is, 1 is a main body of a copying machine, and a document table (transparent glass) 2 is fixed to the upper surface of the main body 1 to support a document. A fixed scale 21 is provided at one end of the document table 2 as a reference for setting the document, and a document cover 1 which can be opened and closed is provided near the document table 2. and a work table are provided. The original set on the original platen 2 is moved back and forth by the optical system 3, which includes an exposure run f4 and mirrors 5, 6, and 7, reciprocating along the lower surface of the original platen 2 in the direction of arrow a. It is designed to be exposed and scanned at times.

In this case, mirror 6.7 moves at half the speed of mirror 5 so as to keep the optical path length constant.

The light reflected from the original by the scanning of the optical system, and the light reflected from the original by the light irradiation of the exposure lamp 4 is reflected by the mirror 5e, 6e, and then passes through the variable magnification lens block 8. The light is reflected by mirror 9 and guided to photoreceptor drum 10, so that an image of the document is formed on the surface of photoreceptor drum 1o.

The photosensitive drum 10 rotates in the direction of arrow C, and its surface is first charged by the charger 11, and then the image of the document is exposed to slit light to form an electrostatic latent image. is made visible by applying toner by the developing device 12. On the other hand, the paper (image-forming object) P is taken out one by one from the selected upper paper feed cassette 13 or lower paper feed cassette 14 by the feed roller 15 or 16, and the paper guide path 17
Alternatively, it is guided to a pair of registration rollers 19 through a pair of registration rollers 1918, and sent to a transfer section 6 by this pair of rollers 1911C. Here, each of the paper feed cassettes 13, 1
4 is removably provided at the lower right end of the main body 1, and either one can be selected on the operation panel described later. In addition, each of the above paper feed cassettes 13,
14 are respective cassette size detection switches 601.6
The cassette size is detected by 0□.

This detection switch 60. ．． 60. is composed of a plurality of microswitches that are turned on and off according to the insertion of cassettes and trays of different sizes.

On the other hand, the paper P sent to the transfer section comes into close contact with the surface of the photoreceptor drum 10 at the transfer charger 20, so that
The toner image on the photoreceptor drum 10 is transferred by the action of the charger 200 described above. The transferred paper P is peeled off from the photoreceptor drum 10 by the action of the peeling charger 21, conveyed on the conveyor belt 22, and sent to a pair of fixing rollers 23 as a fixing device provided at the rear end. By passing through this, the transferred image is fixed. Then, the paper P after fixing is
The paper is discharged onto a tray 25 outside the main body 1 by a pair of paper discharge rollers 24. After the photosensitive drum 10 has been transferred, the charge is removed by the charger 26, residual toner on the surface is removed by the cleaner 27, and the residual image is erased by the charge removal lamp 28 so that the drum returns to its initial state. ing. Note that 29 is a cooling fan for preventing the temperature inside the main body 1 from rising.

FIG. 9 shows nine operation panels 30 provided on the main body 1. 30. 30. is a copy key that commands the start of copying;
301 is a numeric keypad for setting the number of copies, etc.; 301 is a display unit for displaying the operating status of each unit, paper jam, etc.; 30.
are cassette selection keys for selecting upper and lower paper feed cassettes 13 and 14; 30. 30. is a cassette display section that displays the selected cassette; 30 is a magnification setting key for setting the enlargement/reduction magnification of copying in a predetermined relationship; 30 is a zoom key for steplessly setting the enlargement/reduction magnification; 30. 30. is a display section that displays the set magnification; 30m and 30b are operation keys for setting the width of the image non-forming range (stitch margin), respectively, and 30c are for setting the copy density.
is a display section that displays the width dimension of the set binding margin.

FIG. 10 shows an example of the configuration of a drive source for each drive section of the copying machine configured as described above, and is composed of the following motors. That is, numeral 31 is a lens motor, which is a motor for moving the position of the lens pro 8 for changing the magnification. Reference numeral 32 denotes a mirror motor for changing the distance (optical path length) between the variabler 5 and the mirror 6.7 for zooming. 3
3 is a scanning motor, which connects the exposure lamp 4 and mirror 5;
, a motor for moving the mirror 6.7 for document scanning. Reference numeral 34 denotes a shutter tanabata, which is a motor for moving a shutter (not shown) for adjusting the charging width of the photosensitive drum 10 by the charger 1111C during zooming. 35 is a developing motor, which is connected to the developing device 1.
This is a motor for driving the developing roller No. 2, etc. 3
A drum motor 6 is a motor for driving the photosensitive drum 10. 37 is a fixing motor that connects the paper conveyance path 22, the fixing roller pair 23 and the paper ejection roller pair 2.
This is a motor for driving 4.

A paper feeding motor 38 is a motor for driving the delivery rollers 15 and 16. 39 is a paper feed motor;
This is a motor for driving the registration roller pair 19. A fan motor 40 is a motor for driving the cooling fan 29.

FIG. 11 shows a drive mechanism for moving the optical system 3 back and forth. That is, the mirror 5 and the exposure lamp 4 are placed in the first carriage, the mirror 6.7 is placed in the second
These carriages 41□, 418 are supported by carriages 41°, respectively, and these carriages 41□, 418 are supported by guide rails 42□, 42
．． It is guided by IIC and can freely move in parallel in the direction of arrow a. That is, the four-phase nine-speed motor 33 drives the pulley 43. An endless belt 45 is stretched between the pulley 43 and the idle pulley 44, and one end of a first carriage 411 that supports the mirror 5 is fixed to a midway portion of the belt 45. On the other hand, the rail 42. of the second carriage 41□ supports the mirror 6.7. In the guide section 46 of
Rail 42. Two 7'-IJ47 spaced apart in the axial direction of
．． 47 is rotatably provided, these pulleys 4
A wire 48 is stretched between 7 and 41. One end of this wire 48 is attached to the fixed part 49, and the other end is attached to the coil sger ring 5.
0 to the fixing portion 49, respectively.

Further, a first carrier is provided in the middle of the wire 48.

Ji41. One end is fixed. Therefore, no J?
As the motor 33 rotates, the belt 45 rotates and the first carry (41□) moves, and the second carry (41) also moves accordingly. At this time, pulley 4
7. Since 47 acts as a movable pulley, the 1st gear and the 4th gear
11 to the second carriage 41. move in the same direction at 1/2 the speed. In addition, 1. Second carriage 41
1.41. The moving direction of the pulse motor 33 is controlled by switching the rotation direction of the pulse motor 33.

Further, on the document table 2, a copyable range corresponding to the specified paper is displayed. That is, the paper size specified by the paper selection key 304 is set as (Px + Py), and the magnification setting key 30. ．． If the copying magnification specified by 30° is K, the copyable range (x, y) is as follows: x=Px/K y=pa/K. Of this copyable range (x, y), the X direction is indicated by the pointers 51 and 52 provided on the back surface of the document table 2, and the y direction is indicated by the light shielding plate 4 of the first carriage 411.
It is displayed by a moving scale 53 provided on the upper surface of 1a.

The above guideline 61.52 is the data IJ as shown in Figure 12.
54 and 55 via a wire ring 56. The googly 55 is rotated by a motor 58, and by driving the motor 58 in accordance with the paper size and magnification, the distance between the pointers 51 and 52 can be changed. ing.

Further, the first cartridge 411 is moved to a predetermined position (home position according to the magnification) by driving the motor 33 according to the paper size and magnification. And copy key 30. When pressed, the first carriage 411 first moves to the second carriage 41 . After that, the land 4 is turned on and the second carriage 4 is moved in a direction away from the second carriage 4.

When scanning of the original is completed, the lamp 4 is turned off and the first lamp is turned off.
The carriage 411 is returned to the home position.

FIG. 13 shows the overall control circuit, including the main processor group 71 and the first group 71. 2nd subgrossetsa group 72.73
It is mainly composed of. The main processor group 71 includes an operation knob 30 and various switches and sensors such as the cassette size detection switch 60. ．． 60. A high-voltage transformer 76 that detects inputs from input devices 75 such as, and drives the various chargers, the static elimination run f28, the blade solenoid 27& of the cleaner 27, the heater 23a1 of the fixing roller pair 23, the exposure lamp 4, It controls each of the motors 30 to 40, 58, etc. to perform the above-described copying operation and also to control the display of the display section 130, which will be described later.

Among the above motors 31 to 40.58, motor 35.37
, 40 and the developing unit 12 are controlled by the main processor group 71 via a motor driver 78. The motors 36, 39, 38, 58 are controlled by the second sub-gross setter group 73 via the nozzle motor driver 80.
controlled by Further, the exposure run f4 is controlled by the main processor group 71 via the feed/f regulator 81, and the heater 23% is controlled by the main processor group 71 via the heater control section 82. And main processor group 7
1 to 1st. Commands to drive and stop each motor are sent to the second sub-processor group 72 and 73, and statuses indicating the driving and stopping states of each motor are sent from the first and second sub-processor groups 72 and 73 to the main group 7. Sent. Further, the #cl sub-processor group 72tlC controls the motors 31 to 72tlC.
Position information from a position sensor 83 that detects each of the 34 initial positions is input.

FIG. 14 shows an example of the configuration of the main processor group 71. That is, 91 is a one-chip microcomputer (hereinafter simply referred to as microcomputer), which detects the human power of keys on an operation knob (not shown) and controls various displays through an input/output port 92. Also, my ;791
is expanded by input/output ports 93-96. The input/output port 93 is connected to a high voltage transformer 76, motor driver 78, lamp regulator 81, and other outputs, and the input/output port 94 is connected to a size switch for detecting paper size and other human power. The output port 95 is connected to a copy condition setting switch, its extraction input, and the like. In addition, input/output date 9
6 is for options.

FIG. 15 shows an example of the configuration of the first subgrossor group 72. That is, 101 is a microcomputer, which is connected to the main processor group 71. 102 is a programmable interval timer for controlling the phase switching interval time of the pulse motor; when a set value is set from the microcomputer 101, it counts based on it; and when it has counted out, the end timer is sent to the microcomputer 101. Output to interrupt line. The timer 102 includes a reference clock,
The t4 pulse is input. Also, microcontroller l0II
The IC receives position information from the position sensor 83 and is connected to input/output terminals 103 and 104. The motors 31 to 34 are connected to the input/output capo 104 via the pulse motor driver 79. In addition, the above input/output ys-to-zos is
It is used for outputting status signals of each pulse motor to the main output group 71, etc.

FIG. 16 shows an example of the configuration of the second sub-process group 73. That is, 110 is a microcomputer, which is connected to the main processor group 71. Reference numeral 112 is a programmable interval timer for controlling the phase switching interval time of the nozzle smoke, and when a set value is set from the microcomputer 111, it counts based on it.
When the count is out, the end signal is output. This end signal is latched by the latch circuit 113, and its output is supplied to the interrupt line and input/output/-) input line of the microcomputer 111. In addition, the microcomputer 111 has an input/output I-
A motor 36 is connected to this input/output port 114 via the /9 motor driver 80.
．． 3B, 39°58 are connected.

Fig. 17 shows the control circuit of the motor.
-104, 114) K is Norms motor driver z2z (No. 1315i0) or Luss motor driver 79
．． A pulse motor 123 (equivalent to 80 tlC) is connected to a pulse motor driver 122 (equivalent to the above/mentioned pulse motors 31 to 34, 36, 311).

39) are connected to each winding A, S, B, and T.

Figure 18 shows the speed control method of the armpit motor, (a) is the speed curve of the armature motor, and (b) is the speed curve of the armpit motor.
The figure shows the phase switching interval. As is clear from this figure, the phase switching is long at first, gradually becomes shorter, becomes evenly spaced, becomes gradually longer again, and then stops. That is, this indicates the through-up and through-down of the pulse motor, starting from the self-starting region, starting up, being used in the high-speed region, and then eventually falling down. In addition, tl, t2...
-tx indicates the phase switching interval time.

Next, the main parts of this invention will be further explained.

In this apparatus, as described above, the first carriage 41. The pointers 51 and 52 are driven to display the image forming range, and the first cylinder and the fourth gear are driven to prevent the formation of an image to be used as a binding margin, for example, on the left or right side of the copied image. It is possible to display the range. The non-formation range of this image (hereinafter referred to as
The formation position of the binding margin (referred to as a binding margin) and its width are determined using the operation key 317m or 3 in the operation analogue 30 described above.
0b is operated, the set width dimension is displayed on the display section 30aVc, and the first
The image is displayed on the document table 2 by a moving scale 53 provided on the carrier 411 and a fixed scale 21 provided on the document table 2. That is, as shown by the solid line in Figure 1,
1st Kyari, Ji41. is normally placed on standby at a position indicating the set copyable range. In this state, when the operation key 30m is pressed, the motor 33 is driven, and the first carriage 411 is moved in the direction of the fixed scale 2m. and,
For example, as shown by the dotted line in the same figure, the first
When □ is close to fixed scale 2□, press the operation key 30m.
, 30b are operated as appropriate to set the required width δ of the binding margin. This width dimension δ is expressed as the distance between the fixed scale 21 and the movable scale 53. Therefore, the operator can check the binding margin with the document G set on the document table 2.

Of course, the display section 30eK of the operation door 30 quantitatively displays the width dimension of this binding margin.
The width dimension can also be set quantitatively with reference to 0e. The display on the display section 30e is, for example, a /4 russ motor 3.
By counting No. 3 driving nozzles, the moving distance of the first carriage 411 can be determined, so the width dimension is calculated based on this moving distance. Here, “＋
The display “, ′-” indicates the position where the binding margin is formed.
In the case of "+", for example, a binding margin is formed on the left side of the copied image, and in the case of "-", it means that a binding margin is formed on the right side. However, if the document is set upside down, the position where the binding margin is formed will also be reversed. FIG. 1 shows the position of the moving scale 53 in the "6+" display, and FIG. 2 shows the position of the moving scale 53 in the "-" display.
It is the edge of the.

Furthermore, as shown in FIGS. 1 to 3, a fixed scale 2.
An opening 23 having a size of mXn is provided at one end of the document table 2 (transparent plus) so that the document table 2 (transparent plus) is exposed. Therefore, even if the binding margin is set in the -1 direction as described above, or even if the binding margin is set to δ=Osw, the opening 2. Since the moving scale 53 can be visually observed, the binding margin can be adjusted. You can check the width dimension of.

In this way, when the copy key 30 is pressed after setting the width of the binding margin, the exposure timing of exposure run 'f4 or the feeding timing of paper P is known, for example, according to the set width of the binding margin. As shown in FIG. 4, a binding margin P is formed together with the paper PK copy image.

On the other hand, as shown in FIGS. 1 to 3, the first carriage 4
1. The above-described display section 130 is provided on the surface of the light shielding plate 41h at a position close to the movable scale 53 and substantially parallel to the opening 2°. The display section 130 can selectively display the set copy magnification and binding margin as shown in FIG. 5(,). FIG. 5(,) shows a state in which all segments of the display unit 130 are lit, and in the same figure, 131 is a display indicating the copying magnification;
132 is a display showing the binding margin, 133 is a display showing the position where the binding margin is formed, 134 is a display showing the copying magnification and the setting value of the binding margin, and 135 and 136 are displays showing the units of the copying magnification and binding margin, respectively. .

The display signal supplied to this display section 130 is almost the same as the display section "ap30c" of the operation panel 30 described above. A display 134 indicating the setting values of the binding, copy magnification, and binding margin, and the position where the binding margin is formed are displayed. The signal 133 shown is similar to the signal supplied to the display sections 30@, 30e of the operation armpit 30, and the display 1 indicating the copy magnification is added to these signals.
31. Display 132 indicating binding margin. and copy magnification.

The signal for driving the displays 135 and 136 indicating the setting value of the binding margin is selectively supplied by the main processor 7. In such a configuration, for example, the first carriage 411 is normally on standby at a position indicating an image forming range according to the copying magnification, so that the display unit 130
Correspondingly, the copying magnification is also displayed as shown in Figure 3). When the binding margin is set in this state, the width of the binding margin corresponding to the set value is displayed as shown in FIG.

According to the above embodiment, by selectively driving the first carriage 41□, it is possible to display the image forming range according to the copying magnification and the non-forming range of the image used as the binding margin.

Therefore, since the image forming range and non-forming range can be viewed directly on the document table 2 while comparing them with the original, these ranges can be easily confirmed.

In addition, the image forming range and non-forming range pressure are determined by the first cartridge 4.
11, no special configuration is required and an increase in the number of parts can be suppressed.

Furthermore, a display section 130 is provided on the first carriage 4,
Since the display unit 130 quantitatively displays the image formation range and non-image formation range, when setting a document on the document table 2, the operator can move his/her line of sight to the operation panel 30. It has excellent operability because you can check the setting values.

Incidentally, in the above embodiment, the display section 130 is connected to the first carrier,
．． Although the light shielding plate 41a is provided on the upper surface of the light shielding plate 41a, the present invention is not limited thereto, and it may be provided on the outer surface of the first carriage 41□ as shown in FIG. With such a configuration, the display section 130 can be isolated from the heat of the exposure run f4, so that deterioration of the display section 130 can be prevented.

Further, as the display section 130, a liquid crystal display or a segment structure light emitting diode can be used.

It goes without saying that various other modifications can be made without departing from the gist of the invention.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to directly and quantitatively display the image formation range or non-image formation range through the document table, and it is possible to provide an image forming apparatus with excellent operability. .

[Brief explanation of the drawing]

FIGS. 1 and 2 show an embodiment of the image forming apparatus according to the present invention, and FIG. 3 is a plan view of the main parts showing different operating states, and FIG. 3 shows a binding margin display pattern. FIG. 4 is a perspective view showing an example of forming a binding margin, FIG. 5 is a plan view of the main part shown to explain the display state of the display section, and FIG. 6 is a perspective view of other parts of the display section. The perspective view of the main parts of the embodiment, FIG. 7, and FIG. 8 show the configuration of the image forming apparatus.
Fig. 7 is an overview perspective view, Fig. 8 is a side sectional view, Fig. 9 is a plan view showing the structure of the operation panel, Fig. 10 is a perspective view showing the structure of the drive section, and Fig. 11 is the drive of the optical system. FIG. 12 is a perspective view schematically showing the mechanism; FIG. 12 is a perspective view schematically showing the pointer drive mechanism; FIG. 13 is a configuration diagram showing the overall control circuit;
Figure 4 is a configuration diagram of the main processor group, Figure 15 is a configuration diagram of the first sub-processor group, Figure 16 is a configuration diagram of the second sub-processor group, and Figure 17 is a schematic diagram showing the control circuit of the pulse motor. FIG. 18 is a diagram for explaining the speed control method of the pulse motor. 1...Copying machine main body, 2...Original table, 2. . . . Fixed scale, 28 . . . Opening, 30 . - Moving scale, 71... Main processor group, 130...
Display section. Applicant's agent Patent attorney Suzue Takehiko M-side engraving (
No change in content) 28 Figure 5 (a) (b) (C) 6th prisoner Figure 7 Figure 14 Figure 15 Tada 16th prisoner Figure 18 Procedure amendment December 5, 1980

Claims (4)

[Claims] (1) The document placed on the document table is optically scanned by a scanning means that moves along the document table, and a reflected light image from the document is formed on an image carrier to form a charge pattern. ,
In an image forming apparatus that develops this charge pattern and then transfers and fixes it to a transfer material to form an image, the scanning means is driven according to a set image forming magnification or a set non-image forming range, and this scanning a control means for selectively displaying an image forming range and a non-image forming range by the means and one side of the document table; a control means provided in the scanning means for selectively displaying the set image forming magnification and non-image forming range; 1. An image forming apparatus comprising: a display means for quantitatively displaying information. (2) The scanning means is stopped at a position where y=Py/K, where Py is the dimension in the scanning means movement direction of the transfer material and K is the image forming magnification. The image forming apparatus according to item 1. (3) The image forming apparatus according to claim 1, wherein the display means comprises a liquid crystal panel. (4) The image forming apparatus according to claim 1, wherein the display means comprises a light emitting element having a segment structure.