JPS61209464A - Picture forming device - Google Patents

Abstract

PURPOSE:To make a picture forming the possible range and the size of a transferred material visible and to attain an excellent operability by providing a fixed scale becoming the set reference of an original with the 1st optical display means for displaying a copying possible range and the 2nd optical display means for displaying a copying magnification, etc. CONSTITUTION:The fixed scale 21 becoming the set reference of the original is provided with a scale display part 130 as the 1st optical display means for displaying the copying possible range of the original along the longitudinal direction of the fixed scale 21. The scale display part 130 is constituted with a crystal liquid element, for instance, and each segment 1301 is selectively caused to light up and controlled by a main processor group 71 corresponding to the copying possible range in a direction (x), which is obtained by the paper size and the set magnification. In the central part of the fixed scale 21 a set state display part 131 as the 2nd optical display means is installed, and constituted with an original size display part 132, a copying magnification display part 133 and a paper size display part 134, all of which are composed of crystal liquid display elements, for instance.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to an image forming apparatus such as an electronic copying machine.

[Technical background of the invention and its problems]

As is well known, display means for displaying a copyable range has recently been developed in electronic copying machines having the function of reducing and enlarging original images. However, since this display means is provided on the back side of the document table and is displayed through the document table,
When placing an original on the document table, it sometimes became difficult to read.

In addition, since the reduction and enlargement factors are displayed on the operation panel, the operator must visually check both the document table and the control panel when setting the document on the document table, which poses a problem in operability. It had

[Purpose of the invention]

The present invention has been made based on the above circumstances, and an object thereof is to provide an image forming apparatus that is easy to see the image forming apparatus range d, the size of the transfer material, etc., and has excellent operability. It is.

[Summary of the invention]

The present invention is provided with a first optical display means for displaying a copyable range on a fixed scale serving as a reference for setting a document, and a second optical display means for displaying a copy magnification and the like.

[Embodiments of the invention]

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

6 and 7 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 to serve as a reference for setting the document.Furthermore, near the document table 2, there is a document cover 1 that can be opened and closed, and a work table 1!
is provided. The original set on the original platen 2 is moved back and forth by an optical system consisting of an exposure run f4 and a mirror 5, 6, 7 in the direction of arrow a along the lower surface of the original platen 2. It is designed to be exposed and scanned.

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

The light reflected from the original by the scanning of the optical system, that is, the light reflected from the original by the light irradiation of the exposure run f4, is reflected by the mirrors 5, 6.7, passes through the variable magnification lens block 8, and then passes through the mirror 9. The light is reflected by the photoreceptor drum 10 and guided to the photoreceptor drum 10, so that an image of the document is formed on the surface of the photoreceptor drum 100.

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. The image is visualized by applying toner by the developing device 12. On the other hand, the paper (image forming object) P is sent out from the selected upper paper feed cassette 13 or lower paper feed cassette 14 (e=-
The sheets are taken out one by one at the roller 15 or 16, and
7 or 18, and is guided to a pair of registration rollers 19, and sent to a transfer section by this pair of rollers 19. Here, each of the paper feed cassettes 13 and 14 is removably provided at the lower right end of the main body 1, and one of them can be selected on an operation panel to be described later. In addition, each of the above paper feed cassettes 13 and 14
are cassette size detection switch, Chiro 0e, 60 respectively.
．． The cassette size is detected by This detection switch 601.60. is composed of a plurality of microswitches that are turned on and off according to the insertion of cassettes of different sizes.

On the other hand, the paper P sent to the transfer section is transferred to the transfer charger 20.
By coming into close contact with the surface of the photoreceptor drum 10 at the portion , the toner image on the photoreceptor drum 10 is transferred by the action of the charger 200 . The transferred paper P is peeled off from the photoreceptor drum 10 by the action of the peeling charger 2, conveyed on the conveyor belt 22, and sent to a pair of fixing rollers 23 as a fixing device provided at the rear end. , the transferred image is fixed by passing through this. After fixing, the paper P is discharged to a tray 25 outside the main body 1 by a pair of paper discharge rollers 24. Further, after the photoreceptor drum 10 after the transfer is charged, the residual toner on the surface is removed by a cleaner 27 after the charge is removed by the charger 26 for removing electricity.
The wake-up lamp 28 erases the afterimage and returns to the initial state. Note that 29 is a cooling fan for preventing the temperature inside the main body 1 from rising.

FIG. 8 shows the operation/4' channel 3Q provided on the main body IK. 301 is a copy key for instructing the start of copying;
0. 301 is a numeric keypad for setting the number of copies, etc.; 301 is a display unit that displays the operating status of each part and paper jams;
04 is a cassette for selecting the upper and lower paper feed cassettes 13 and 14.

30. 306 is a magnification setting key for setting the copy enlargement and RdlJ/magnification in a predetermined relationship; 30 is a zoom key for steplessly setting the enlargement and reduction magnification; ．． 30. is a display section that displays the set magnification; is a density setting section for setting copy density.

FIG. 9 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 3 is a lens motor, which is a motor for moving the position of the lens block 8 for changing the magnification. A mirror motor 32 is a motor for changing the distance 111 (optical path length) between the mirror 5 and the mirror 6.7 for changing the magnification.

A scanning motor 33 is a motor for moving the exposure lamp 4, the mirror 5, and the mirror 6.7 for scanning the original. A shutter motor 34 is a motor for moving a shutter (not shown) for adjusting the charging width of the photosensitive drum 10 by the charger 11 during zooming. 35 is a developing motor, which is connected to the developing device 12.
This is a motor for driving the developing roller, etc. 3
Reference numeral 6 denotes a drum motor for driving the photosensitive drum 10.
It is a motor for moving. A fixing motor 37 is a motor for driving the paper conveying path 22, the pair of fixing rollers 23, and the pair of paper ejecting rollers 24. A paper feeding motor 38 is a motor for driving the delivery rollers 15 and 16. A paper feeding motor 39 is a motor for driving the registration roller pair 19. A fan motor 40 is a motor for driving the cooling fan 29.

FIG. 10 shows a stirring mechanism for reciprocating the optical system 3. That is, the mirror 5 and the exposure lamp 4 are placed in the first carriage 411, and the mirror 6.7 is placed in the second carriage 411.
These carriages 41□, 41. is guide rail 421.42
It is guided by □ and can freely move in parallel in the direction of arrow a. That is, the four-phase 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, a second carriage 41.7 supporting the mirror 6.7. rail 42. The guide portion 46 of the rail 42. Two pulleys 47, 47 are rotatably provided apart from each other in the axial direction, and a wire 48 is stretched between these pulleys 4f, 4f. One end of this wire 48 is fixed to a fixed part 49, and the other end is fixed to the fixed part 49 via a coil spring 50. Furthermore, one end of the midway trap of the wire 48 is fixed to the first carriage 41□. Therefore, as the pulse motor 33 rotates, the belt 45 rotates and the first carriage 41□ moves, and accordingly, the second carriage, the carriage 41. also move. At this time, since the pulleys 47, 47 serve as movable pulleys, the first carriage 41. against the second carriage 41. move in the same direction at the outer speed. In addition,
1st. The direction of movement of the second carriage 411, 41□ is controlled by switching the direction of rotation of the propeller motor 330.

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 (P)Ce Py ), and the magnification setting key 30. ．． If the copy magnification specified by 30° is K, the copyable range (x, y) is x #Pz /K y = Py /. Of this copyable range (x, y), the X direction is displayed on the scale 2K as described later, and the y direction is displayed on the movable scale 53 provided on the light shielding plate 41 & top surface of the first carriage 41□. It is now possible to do so.

The first carriage 41 is moved to a predetermined position (
It is designed to move to a home position (according to the magnification). Then, when the copy key 30K is pressed, the first carriage 411 first moves to the second carriage 41. After that, the rung 4 is turned on and is moved in the direction away from the second carriage 41□.

When scanning of the original is completed, run f4 is turned off and the first
The carriage 411 is returned to the home position.

FIG. 11 shows the overall control circuit, in which the main processor group 71 and the first . 2nd subprocessor group 72.73
It is mainly composed of. The main processor group 71 includes the operation armpit 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 neutralizing lamp 28; the blade solenoid 27a of the cleaner 27; Each motor 31 to 40.58 is controlled to perform the above-described copying operation, and a scale display section 130 (to be described later)
It also controls the display of a setting status display section 13 consisting of original size, paper size, and copying magnification.

, among the motors 31 to 40, the motor 35°37.4
A toner motor 77 that supplies toner (0 and developing 512K) is controlled by the main processor group 71 via a motor driver 78, and the percentage controllers 31 to 34 are controlled by the first sub processor group 72 via a pulse motor dryer huff 9. The motors 36, 39, and 38 are controlled by the second sub-groove group 73 via the motor driver 80. Further, the exposure lamp 4 is controlled by the main processor group 71 via the lamp regulator 81, and the heater 23h
is controlled by the main processor group 71 via the heater control section 82. Then, the first processor from the main processor group 71
．． Commands to drive and stop the motors are sent to the second processor group 72, 73, and the first processor group 72,73 receives a command to drive and stop the motor. Second sub-process, group 72,
Main grosse from 73.

A status indicating the drive/stop state of each motor is sent to the motor group 71. Furthermore, the first sub-processor group 72 includes:
A position sensor 8 that detects each initial position of the motors 31 to 34
Location information from 3 has been input.

FIG. 12 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 performs key human power detection on an operation panel (not shown) and various display controls through an input/output port 92. Further, the microcomputer 91 is expanded by input/output ports 93-96. The input/output port 93 is connected to the high voltage transformer 26, motor driver 78, rung regulator 81, and other outputs, and the input/output port 94 is connected to a size switch for detecting paper size and its individual inputs. A copy condition setting switch and its respective inputs are connected to the port 95. Note that the input/output port 96 is for an option.

FIG. 13 shows an example of the configuration of the first sub-processor group 72. That is, 101 is a microcomputer, which is connected to the main processor group 71. 102 is t! This is a programmable interval timer for controlling the phase switching interval time of the motor.
When the count is out, an end signal is output to the interrupt line of the microcomputer 101. A reference clock pulse is input to the timer 102. Furthermore, the microcomputer 101 receives position information from the position sensor 83 and is connected to input/output ports 103 and 104.

The motors 31 to 34 are connected to the input/output port 104 via the multi-purpose motor driver 79. The input/output port 103 is used for outputting the status signal of the main motor to the main process group 71, etc.

FIG. 14 shows an example of the second subgroup vstvm. That is, 110 is a microcomputer connected to main processor #21. Reference numeral 112 is a programmable interval timer for controlling the phase switching interval time of the main pulse motor, and when a set value is set by the microcomputer 111, it counts based on the setting value, and outputs an end pulse when it counts out. This ending no J? The signal is latched by the latch circuit 113, and its output is supplied to the interrupt line of the microcomputer 111 and the input/output port input line.

Further, an input/output port 114 is connected to the microcomputer 111, and this input/output port 114Fc is connected to the motors 36, 3B, 39 .
58 are connected.

Figure 15 shows the control circuit of a pulse motor. -) 127 (I/O port 1 in Figures 13 and 14)
04,114) K is pulse motor driver lz
z (Fig. 1 x o) +#Smotor driver 79.80
) is connected to this pulse motor driver 122
2 pulse motor 123 (the pulse motors 31 to 34)
Equivalent to ゜36.38.39＞(7) 6 volumes mAIA, BI
B is connected.

Figure 16 shows the speed control method of a pulse motor.
The figure (a) shows the speed curve of the Nolles motor, and the figure (b) shows the phase switching interval. As is clear from this figure, the phase switching intervals are long at first, gradually shorten, eventually become equal intervals, gradually become longer again, and then stop. That is,
This shows the through-up and through-down of the pulse motor, which starts from the self-starting region, starts at 9, is used in the high-speed region, and then eventually falls. In addition, tl.

t2...tx indicates the time of the phase switching interval.

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

As shown in FIG.
A scale display section 130 as an optical display means is provided along the longitudinal direction of the fixed scale 2□. The scale display section 130 is composed of, for example, a liquid crystal display element, and each segment 130□ corresponds to the copyable range in the X direction determined by the paper size and the set magnification. The lighting is controlled selectively.

Note that FIG. 1 shows a state in which all segments 1301 are lit.

Further, in the center of the fixed scale 2, a setting state display section 13 is provided as a second optical display means. This setting status display section 131 is a document size display section 132. It consists of a copy magnification display section 133 and a paper size display section 134, and each of these display sections 132, 133, and 134 is composed of, for example, a liquid crystal display element. this house,
The magnification display section 133 is the display section 30 of the operation/main panel 30.
．． The paper size display section 134 displays the size of the paper stored in the upper or lower paper feed cassette 13 or 14 selected by the cassette selection key 304. The size of this paper can be recognized from the output signals of the microswitches 60□ and 6o mentioned above. In addition, the document size display section 13
2 displays, for example, the size of the document determined from the set magnification and paper size.

FIG. 2 shows a scale display section 130. This shows an example of the display on the setting status display section 131, and shows a case where a 9. A4 original is reduced by 86 inches and copied onto a B5 sheet. At this time, the scale display section 130 displays a segment 130. which indicates the copyable range in the X direction under this condition. ．． 130□ is lit.

The copyable range in the X direction is displayed with the center of the fixed scale 2□ as a reference. The display control of the scale display unit 130 includes, for example, segments 130, . 1'30. (D position information f: ROM
This position information may be stored in a read-only memory (read-only memory) and read out in accordance with the copyable range.

FIGS. 3 to 5 show states in which the applicable range is displayed using the scale display section 130 and the moving scale 53, respectively. That is, FIG. 3 shows a case where an A4 original G is copied onto A4 paper at a magnification of 100 inches. Further, FIG. 4 shows a case where an A5 original G is copied onto A4 paper at a magnification of 141%. Furthermore, Figure 5 shows A
4/1. ．． This is a case where original G of No. 2 is to be copied onto A4 paper at a magnification of 120 inches. In this case, since there is no standard document size equivalent to A471.2, the document size display section 13
2 is not displayed.

According to the above embodiment, the scale display section 130 is provided along the longitudinal direction of the fixed scale 2K, and the scale display section 13
0 segment) Z,? 0. is lit as appropriate to display the copyable range in the X direction. In this way, the scale display section 13
By providing 0 on the fixed scale 2□, the copyable range can be seen even when a document is set on the document table 2, so that the copyable range can be easily confirmed.

Further, the fixed scale 2□ includes an original size display section 132, a copy magnification display section 133. A setting status display section 131 consisting of a paper size display section 134 is provided. However, when setting a document on the document table 2, necessary information can be visually confirmed by moving the user's line of sight to the operation panel 30, which provides good operability.

In the above embodiment, the scale display section 130 and the setting state display section 131 are configured with a liquid crystal display element, but they are not limited to this, and can also be configured with, for example, a light emitting diode or an EL (electroluminescence) element. .

Moreover, if the setting status display section 131 is a dot matrix display, it is possible to display I, ETTER (letter) size, FOLI
O (folio) size etc. can also be displayed.

It goes without saying that various other modifications can be made without changing the cost of this invention.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to provide an image forming apparatus in which the image forming range, the size of the transfer material, etc. are easy to see, and the operability is excellent.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of an image forming apparatus according to the present invention; FIG. 2 is a plan view showing only the main parts; FIG. 2 is a plan view showing different display states from FIG. 1; 5 is a plan view of the flat part showing different display states, FIGS. 6 and 7 are views showing the configuration of an image forming apparatus to which the present invention is applied, FIG. 6 is an overview perspective view, and FIG. The figure is a side sectional view,
Fig. 8 is a plan view showing the configuration of the operation channel, Fig. 9 is a perspective view showing the structure of the drive section, Fig. 10 is a perspective view schematically showing the drive mechanism of the optical system, and Fig. 11 is the entire structure. Fig. 12 is a block diagram showing the main processor group;
Fig. 13 is a block diagram of the first sub-processor group, Fig. 14 is a block diagram of the second sub-processor group, Fig. 15 is a schematic block diagram showing the i4 pulse motor control circuit, and Fig. 16 is the speed control of the pulse motor. It is a diagram for explaining the method. 1...Copying machine main body, 2...Original table, 2□...Fixed scale, 2. ... opening, 30 ... operation/mother panel, 30 m, 30 b-operation key, 411-@1st
Carriage, 41a... Light shielding plate, 53... Moving scale, 71... Main processor group, 130... Scale display section, 131... Setting state display section. Applicant's agent Patent attorney Takehiko Suzue Figure 1
Figure 2 Figure 3 Figure 4 Figure 5 O Showa Year Month Day

Claims (1)

[Scope of Claims] 1) An image forming apparatus that has a scale that serves as a reference for setting a document, and that optically scans the set document to form an image corresponding to the image of the document on a transfer material. a first optical display means provided on the scale for displaying an image forming possible range by moving in the longitudinal direction of the scale; and a second optical display means provided for the scale for displaying at least the size of the transfer material.
An image forming apparatus comprising: an optical display means. 2) The second optical display means displays the document size and image formation magnification.
The image forming apparatus described in . 3) The image forming apparatus according to claim 1, wherein each of the first and second optical display means is a liquid crystal display device. 4) The image forming apparatus according to claim 1, wherein each of the first and second optical display means is a light emitting display device.