JPS63142374A - Image forming device - Google Patents

Abstract

PURPOSE:To easily and securely specify a document by turning on a light emitting element which constitutes a specifying means for specifying a necessary part in the document only when an operating means is operated. CONSTITUTION:While a spot light source 131 is lighted at a couple of diagonal points Sa of a necessary range, the spot light source 131 is moved in the order of respective diagonal points Sb, Sc, Sd, and Sa constituting the necessary range E, which is displayed. Further, the spot light source 131 is turned off when it is returned to the diagonal point Sa. Namely, the spot light source 131 does not light at all times and is lighted only when the necessary range of the document is specified, so no unnecessary light is projected on an original platen 2. Further, when a position specifying key 30u is operated, the spot light source 131 blinks, so the specified position can be confirmed. Further, when a key for specifying the monitoring of the specified range is operated, the spot light source 131 moves and displays the specified range, which can, therefore, be confirmed.

Description

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

(Prior Art) As is well known, various electronic copying machines have been developed that specify a desired portion of a document image and erase and copy the image of the specified portion.

By the way, in this type of copying machine, as a means for specifying a desired part of a document, a carriage, which serves as a scanning means disposed on the back side of the document table, is movable in a direction perpendicular to the direction of movement of the carriage. A method has been developed in which a spot light source is provided and specification is made using this spot light source.

However, since the spot light source with the above configuration is always on even when not specifying a desired part of the document, it is difficult to distinguish between the specified part and other cases, which poses a problem in operability. Was.

(Problems to be Solved by the Invention) The present invention solves problems related to lighting control of a document image specifying means, and its purpose is to provide an image forming apparatus with good operability. That is.

[Structure of the Invention (Means for Solving the Problems)] The present invention provides an image forming apparatus capable of selectively specifying and erasing an original image, which includes a light emitting means and which is responsive to the operation of an operating means. a specifying means for specifying a desired portion of the document image by irradiating light onto the document set on the document table by the light emitting means, and specifying a desired portion of the document image; and a control means that lights up when the means is operated.

(Function) In this invention, the light-emitting element constituting the specifying means for specifying a desired part of the document is turned on only when the operating means is operated, thereby making it possible to easily and reliably perform the document specifying operation. There is.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 5 and 6 schematically show an image forming apparatus of the present invention, for example, a copying device. That is, 1 is a main body for copying, and a document table (transparent glass) 2 for holding a document is fixed on the top surface of the main body 1. This document table 2 is provided with a fixed scale 21 that serves as a reference for setting the document, and furthermore, a document cover 11 that can be opened and closed is provided near the document table 2. Then, the Wt placed on the document table 2 is
An optical system consisting of an exposure lamp 4 and mirrors 5, 6, and 7 moves back and forth along the lower surface of the document table 2 in the direction of arrow a, so that the document is exposed and scanned during the reciprocation. In this case, mirror 6.7 moves at half the speed of mirror 5 so as to maintain the optical exposure length. 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 lamp 4 is reflected by the mirror 5.6.7, passes through the variable magnification lens block 8, and further passes through the mirror 91. .

The photosensitive drum 10 rotates in the direction of the disclosure arrow. First, the surface is charged by the charging device 11, and then the image is subjected to slit n light at the exposure section ph, so that an electrostatic latent image is formed on the surface. It is formed.

This electrostatic latent image is produced by a developing device 12 that contains, for example, red or black toner, and is selectively operated as required.
1.122, the image is visualized by adhering toner.

The developing units 121 and 122 are provided one per copying hoe main body 1.
1152, and these developing devices 121.12
The color of the toner contained in the toner 2 is set, for example, by the connection state of a plurality of bins of a connector (not shown) provided on the copy body. That is, the developing device 12
1. A connector (not shown) is provided on the side of 122 to be connected to a connector provided on the copying machine main body 1 side, and at least two of the plurality of bins of this connector are connected by jumper wires. It is connected. This jumper wire connection is a color code indicating the color of the toner contained in the developing device. In such a configuration, when the developing device is inserted into the copying machine main body 1, the copying machine main body 1
The connector on the side and the connector on the developing device are connected, and the jumper wire on the developer side connects the bin on the copying machine main body side. The color of the toner contained in the container can be determined.

On the other hand, sheets of paper (material to be transferred) are taken out one by one from the selected upper paper feed cassette 131 or lower paper feed cassette 132 by a feed roller 141, 142 and a pair of rollers 151, 152, The image is guided through the image to a pair of registration rollers 17, and guided to a transfer section by the pair of registration rollers 17.

Here, the paper feed cassettes 131 and 132 are removably provided at the lower right end of the main body 1, and either one can be selected on the operation panel described later. Further, the cassette size of each of the paper feed cassettes 131 and 132 is detected by a cassette size detection switch 601 and 602, respectively. The cassette size detection switches 601 and 602 are composed of a plurality of microswitches that are turned on and off according to the insertion of cassettes of different sizes.

Furthermore, a manual feed guide 13affi is provided on the upper surface of the paper feed cassette 131, and the paper manually inserted through the manual feed guide 13a is transferred to the feed roller 1.
4a to the roller pair 15t, and thereafter, the paper is conveyed in the same manner as the paper fed from the paper feed cassette 131.

On the other hand, the paper sent to the transfer section comes into close contact with the surface of the photoreceptor drum 10 at the transfer charger 18, so that the toner image on the photoreceptor drum 1o is transferred by the action of the charger 18. . This transferred paper P is transferred to the peeling charger 1
The transferred image is electrostatically separated from the photoreceptor drum 10 by the action of step 9, is conveyed by a conveyor belt 20, and is sent to a fixing roller 21 as a fixing device provided at the end of the conveyor belt. It will be established. After fixing, the paper is discharged to a tray 25 outside the main body 1 by a pair of delivery rollers 22. Further, the photosensitive drum 10 after the transfer is returned to its initial state by removing residual toner on the surface with a cleaner 26 and erasing afterimages with a snow removal lamp 27. Furthermore, 29
is a cooling fan to prevent temperature rise inside the main body 1? It is.

Further, the exposure lamp 4 and the mirror 5 are mounted on a $1 carriage 4.
11, and the mirror 6.7 is mounted on the second carriage 412.
It is set in.

Further, the first carriage 411 is provided with a spot light source 131 that is movable in a direction orthogonal to the moving direction of the first carriage 411. That is, in FIGS. 7 and 8, a guide shaft 130 is provided along the lamp 4 in a portion of the first carriage 411 where the light of the lamp 4 is blocked, and this guide shaft 130 has a guide shaft 130 for erasing the original. A spot light source 131 serving as a means for indicating a range is movably provided. As shown in FIG. 8, this spot light source 131 consists of a light emitting element 132, such as a light emitting diode or a lamp, and a lens 133, which are provided opposite to the document table 2. The light generated by the light emitting element 132 is transmitted through the lens. 133, the document table 2 is irradiated with a spot light having a diameter d. This spot light has a brightness that allows it to pass through the document G set on the document table 2, which is, for example, as thick as a postcard. Further, the spot light [131] is connected to a timing belt (belt with fg) 134 disposed along the guide shaft 130.

The timing belt 134 is connected to a pulley 136 provided on the rotating shaft of the pulse motor 135 and a driven pulley 137.

Therefore, by rotating the pulse motor 135, the spot light source 131 is moved in a direction perpendicular to the scanning direction of the first carriage 411.

Further, a position sensor 138 consisting of a microswitch for detecting the initial position of the spot light source 131 is provided on the first carriage 41 located at the end of the guide shaft 130 on the pulse motor 135 side.

For example, when the spot light source 131 is moved, the spot light source 131 first comes into contact with the position sensor 138 and its initial position is detected.

Furthermore, an erasing array 15 in which a plurality of light emitting elements are arranged along the longitudinal direction of the photoreceptor drum 10 is located between the charger 11 for charging the photoreceptor drum 10 and the exposure section ph.
0 is provided, and when performing partial erasure of a document image, the light emitting elements constituting this erasure array are turned on corresponding to the erasure area designated by the spot light source 131, for example, and the light emitting elements of the photoreceptor drum 10 are illuminated. It is designed to remove static electricity. Therefore, the portion from which the charge has been removed remains static even if it is exposed to light at the exposed portion ph. 4. Since no latent image is formed, the original image will be erased.

FIG. 9 shows an operation panel 30 provided on the main body 1 of the copying machine. 30a is a copy key for commanding the start of copying;
30b is a numeric keypad for setting the number of copies, etc.; 30c is a display unit for displaying the operating status of each part, paper jams, etc.;
30d is a density setting section for setting the copy density; 30e is a count command key for displaying the total number of copies and the number of copies for each color; 30f is an ID that allows copying only when the identification codes (ID codes) match. When the copy mode is set, the ID count key is used to display the number of copies corresponding to each ID code. Edit key to operate when performing, 30h
is the magnification key operated when setting the copy magnification, and 301 is the upper and lower paper feed cassettes 13! , 13
Cassette selection key operated when selecting 2, 30j
30 is a color change key that is operated when copying with a different toner color, and 30 is a color change key that is operated, for example, when the edit key 30Cl is operated and in this state the spot light source 131 is used to specify the erasing range of the document, etc., this specified a mode memory key 30 to be operated when storing the erasure range etc. in the memory or reading out information such as the erasure range etc. stored in the memory in advance;
Reference numeral 1 indicates an information key that is operated when you want to obtain information corresponding to each mode.For example, when a paper jam occurs, if you operate this key, the display 3, which will be described later, will be displayed.
00 displays information for clearing paper jams. 30m is a function check key, and when you operate this function check key 30m, the display 30 shows what function is set.
It can be displayed on o. 30n is a dial for adjusting the contrast of the display 300.

Reference numeral 300 denotes a display device consisting of, for example, a liquid crystal dot matrix panel, and on this display device 300, for example, the setting status of the copying machine is displayed in characters, and the various keys 30e, 3
When 0f, 30Q to 30m are operated, the corresponding characters are displayed. Furthermore, if, for example, a paper jam occurs during a copying operation,
The display 300 displays the level of paper jams and countermeasures in text and graphics. On both sides of this display 300, the display 300
Operation keys 30r to 3 for selecting various functions displayed on
04.30s to 30g are arranged. Also, 30p
is a movement key for moving the above-mentioned spot light source 131, and this movement key 30p can be tilted in all directions as shown by arrows 300 to 30t.
30t, the spot light source 131 is moved in the same direction.

30u is the spot light It! 131 is a position designation key for inputting the coordinate position indicated.

FIG. 1 shows the main parts of the control circuit. Control unit 51
The control section 51 controls the operation of the entire copying machine, and the control section 51 includes the aforementioned operation panel 30 and various sensors 52.
, a memory 53, a motor control section 54 that controls the operation of the motors 135 and 139, an array drive section 160 that selectively drives the erasing array 150, and a spot light source 131 are connected.

Further, a charger (not shown), a motor for operating various parts, and the like are connected to the control section 51.

Next, the gist of the invention will be explained.

In the normal waiting state, various currently set information is displayed on the display 300 of the operation panel 30, as shown in FIG. 2(a).

That is, this display 300 currently shows the copy magnification "10".
0%'', paper size A4'', and developing device color black''.In this state, the operation panel 30
For example, when the edit key 300 is operated, the contents displayed on the display 300 are changed as shown in FIG. That is, the operation keys 3ol to 304 each have a partial erasure copying function, a color multiple copying function, and a double-sided copying function that become possible when an optional transport device that transports the copied original to the transfer unit is installed. The operation keys 305 to 308 are set to a margin copy function, a frame erase copy function, a page continuous copy function, and a centering function, respectively. In this state, when the operation key 301 is operated and the partial erasure copying function is set, the display on the display 30o is changed to the state shown in FIG. 3(C).

In this display state, the operation key 306 displays a function for specifying a desired range of the document by specifying diagonal points. When you operate this operation key 306,
The display section m1 corresponding to this blinks, and a desired range of the document can be specified using the spot light source 131. A maximum of 6 points can be specified in the manuscript in this passage specification mode.
The coordinates of the diagonal points of each designated location are stored in the memory 140. Further, the number of these specified locations is displayed numerically inside the display section n1. This designated location is cleared by operating the operation key 30s.

On the other hand, on the display 300, a display is displayed to specify whether to erase the inside or outside of the specified range, corresponding to the operation keys 304 and 30g. That is, a display n2 for specifying deletion of the inside of the specified range is displayed corresponding to the display m2 of the operation key 304, and a display n3 for specifying deletion of the outside of the specified range is displayed corresponding to the display m3 of the operation key 308. be done.

In the above display state, when the operation key 306 is operated,
The spot light source 131 sets the original erasure range designation mode. The operation for specifying the erasure range in this mode will be explained.

In this case, as shown in FIG. 3, the original G is set on the scale 21 of the original table 2 with the copy side facing up.

To designate a desired range E of this document G, first, the spot light source is moved from the home position shown in the figure to one diagonal point S1 of the desired range E by operating the movement key 30p.

The spot light source 131 is normally turned off, and when the movement key 30p is operated, the spot light source 131 is moved while being turned on. Then, when the spot light source 131 reaches the diagonal point indicated by 81, when the position specifying key 30u is operated, the spot light source 131 blinks, and the position coordinates of this diagonal point S1 are stored in the memory 140 via the control unit. be remembered. This position coordinate can be determined, for example, from the number of pulses supplied to the pulse motors 135 and 139 that move the spot light source 131.

After this, operate the movement key 30p again to select the spot light source 1.
31 from the diagonal point S1 to the diagonal point $2, when the position designation key 30u is operated, this spot light source 13
1 flashes, and the position coordinates of this diagonal point S2 are stored in the memory 14.
Stored as 0.

With the erase range specified in this way, the second
When the operation key 304 of the display 30o shown in FIG. Specified as a range.

When the copy key 30a of the operation panel 30 is operated with the erase range specified in this way, the copying operation will be performed.
Under the control of the control unit 51 and the array driving unit 160, the light emitting elements of the erasing array 150 are turned on corresponding to the specified erasing range, and the charge in the area where the light emitting elements are turned on is erased, so that the image of this area is will be deleted.

On the other hand, with the required range of the manuscript specified, the second
When the operation key 301 of the display 30o shown in FIG. 131.

That is, when the operation key 30o is operated, the control unit 51 reads out the stored position coordinates from the memory 140, and in accordance with the position coordinates, the spot light source 131 is first switched from the home position to the off state. It is moved to one diagonal point 3a of the required range E shown in FIG. and,
At this diagonal point Sa, the spot light source 131 is turned on, and in this state, the spot light source 131 is moved in the order of diagonal points Sb, 5c1Sd, and Sa forming the required range E, as shown by the arrows in the same figure. The specified required range E is displayed. Note that the spot light source 131 is turned off after returning to the diagonal point 3a.

According to the above embodiment, the spot light source 131 is not lit all the time, but is lit only when a required range of the document is specified, and therefore has the advantage that unnecessary light is not irradiated onto the document table 2. There is.

Further, when the position designation key 30u is operated in a state where a desired portion of the document is designated, the spot light source 131 blinks, so that the designated position can be easily confirmed.

Furthermore, when a desired part of the document is specified, if an operation key is pressed to specify the monitor of the specified range, the specified range is moved and displayed by the spot light source 131, so that the specified range can be confirmed. It is something.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the invention.

[Effects of the Invention] As described in detail above, according to the present invention, the specification of the document is made by lighting up the light-emitting element constituting the specification means for specifying a desired portion of the document only when the operation means is operated. It is possible to provide an image forming apparatus that can be easily and reliably operated.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of an image forming apparatus according to the present invention, FIGS. 2 to 4 are diagrams for explaining the operation, and FIGS. 5 and 6 are diagrams showing image forming apparatus. The structure of the device is shown in FIG. 5, an external perspective view, a side sectional view, and a spot light source structure. FIG. 8 is a perspective view, FIG. 8 is a side sectional view of the main part, and FIG. 9 is a plan view showing the configuration of the operation panel. 1... Copying body, 30... Operation panel, 3C1.
...Movement key, 30u...Position specification key, 300...
-Display device, 51...control unit, 131...spot light source. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 3 Figure 4 Figure 7 Figure 8

Claims (3)

[Claims] (1) An image forming apparatus capable of selectively specifying and erasing an original image, which has a light emitting means, is moved in an arbitrary direction along the document table in response to operation of an operating means, and is The method further comprises: a specifying means for specifying a desired part of the document image by irradiating light onto the document set on the document table; and a control means for lighting the light emitting means when the operation means is operated. Features of the image forming device. (2) The image forming apparatus according to claim 1, wherein the control means includes a position specifying means, and causes the light emitting element to blink in response to an operation of the position specifying means. (3) The control means has a confirmation means, and moves the specification means in response to the operation of the confirmation means to display the range specified by the specification means. image forming device.