JPH0264582A - Image forming device - Google Patents

Abstract

PURPOSE:To effectively increase the information amount of an image forming body on which an image is formed by writing an image by means of an analog copying machine. CONSTITUTION:An original GE is set, a cover CA is closed, and image formation is started, and then, first data is supplied to a writing unit KA from a character generator 102. According to the data, a written image is formed on a photosensitive drum 7 by a shatter 41. When a next original is set after in image has been formed on a first original, a cover CA is opened, a switch is turned on, and next data is supplied to the writing unit KA through the opening operation. After ward, written data is sequentially renewed in the same way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) Tsukasa Kiba relates to an image forming apparatus using electrophotographic technology.

(Prior Art) Conventionally, in an ordinary copying machine of an image forming apparatus using electrophotographic technology, in order to improve the information m of the copied paper, images other than the original image, such as images of consecutive numbered pages, are used. There was nothing that could be formed. Furthermore, although it is possible to form images other than the original image using a digital copying machine, this method has the drawback of being extremely expensive and impractical.

(Problems to be Solved by the Invention) As mentioned above, in the conventional image forming system [31
There was a drawback in that there was no device for economically writing images such as number of pages.

Accordingly, the present invention performs maw processing using an analog copying machine, and image formation f! The purpose is to provide a

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned problems, the present invention provides a loading table on which a document is placed, and an openable/closable pressing member that presses the document against the loading table. an optical system that optically guides the image of the document on the device stand; a carrier that electrostatically forms the image guided by the optical system on the surface; and a uniformity that indicates the number of pages. a storage means storing data stored in the storage means, an output means outputting the data stored by the storage means, and an output means outputting the data outputted by the output means. An image forming v4 device characterized in that it comprises an updating means for updating data in aff1, and a character embedding means for sequentially forming an image in the image carrier according to the data updated by the updating means. 1. An image forming apparatus, wherein one end of a pressing member is supported on a mounting table so as to be openable and closable, and updating means is provided in the vicinity of a portion where the pressing member is supported. Further, an image forming apparatus having a display means for displaying data outputted by the output means is provided.

(Function) When a document is set in the uniformity forming device, the document pressing member is closed, and image formation is started, initial data is supplied from the character generator to the writing means, and the skinning member shields according to the data. A built-in image is formed on a photoreceptor on which an image has not been formed using a member. R's first manuscript ii! When image formation is completed and the next original is set, the original 1i holding member is opened and closed, the switch is turned on and off, and the second data is supplied to the writing means. Thereafter, the data of the images written sequentially is updated in the same manner.

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

FIG. 2 is a new schematic diagram of a copying machine as an image forming apparatus according to an embodiment of the present invention. On the top surface of the copying machine main body 1 (hereinafter referred to as main body 1), there is a glass document table 2. A cover A and an operation panel SO are provided, and an upper paper feed cassette part 3 and an upper paper feed cassette part 4 are provided on the right side of the main body.
is provided as a paper feeding section, and the upper paper feeding cassette 3A
and upper paper feed cassette 4A are installed. The cassette cover of the upper paper feed cassette 3A serves as a manual paper feed stand 5A for manually feeding the copy paper P1 as needed, and the manual paper feed devices installed there are collectively referred to as the manual paper feed section. 5
That's what it means. The copy paper P taken out at each paper feed section is transferred to a vapor stop switch 1 provided at the entrance of the image forming process.
8. There is a paper output tray 6 on the left side of the main body 1.
is installed.

Next, the internal structure of the main body will be explained. A photosensitive drum 7 is disposed at the center of the counter on the main body. Around the photosensitive drum 7, a charging device 8. Optical system 9
．． Add any characters to the original image and ii! Δ to the writing unit for forming 1ifl, developing device ff110. Transfer band Wi device 11. A stripping charger 12, a cleaning device 13, a static elimination lamp 14, and the like are arranged in this order. A copy paper transport path 17 is formed below the photosensitive drum 8 to guide copy paper fed from each paper feed section from a vapor stop switch 18 to a paper discharge tray 6. Copy paper transport path 1
7, there is a vapor stop switch 1 from the upstream side.
8. Registration roller vs. 19. Transfer charger 11, peeling charger 12. Definitely! Binding 20. A paper ejection device ff121 and a paper ejection tray 6 are sequentially arranged.

The fixing device 20 mainly includes a heat roller 2OA and a pressure roller 5.
208. The heat roller 2OA and the pressure roller 20B are provided above and below the copy paper transport path 17. Heat roller 20A and pressure roller 2OB
is rotationally driven to sandwich the copy paper and transport the toner image transferred to the double-wafer cover downstream while heating and fixing it.

Each of the paper feed sections described above is provided as a pre-process of the copy paper transport path 17. The upper paper feed cassette section 3 is a means for supplying the copy paper P2 stored in the upper paper feed cassette 3A to the copy paper conveyance path 17, and includes a pickup row 515. Paper feed roller 22B
and a separation roller 22C. The upper paper feed cassette section 4 is a means for supplying the copy paper P3 stored in the upper paper feed cassette 4A to the copy paper transport path 17, and includes a pickup roller 16. It is composed of a paper feed row 522D, a separation roller 22E, and the like.

The manual paper feed unit 5 manually feeds the copy paper P1 placed on the paper feed tray 5A to the paper feed roller 22B of the upper paper feed cassette unit 3.
This is a device that supplies the liquid to the sandwiching portion between the separation roller 22C and the separation roller 22C.
It is composed of a feed roller 22A and the like.

The above-mentioned optical system 9 includes an exposure lamp 24. whose back is surrounded by a reflector 23. Mirrors M1 to M6 and lenses 25
It has a configuration with.

Inside the main body 1, an upper frame and a lower frame (not shown) are pivotally supported at one end via a support shaft (not shown), and the other ends of both frames are arranged at a predetermined angle, for example, 30 degrees. It is composed of

Inside the upper frame, there is a charging band 8 around the photoreceptor drum 7. Optical system 9. Exposure lamp 24° developing device 10.
The configuration includes devices such as a cleaning device Wt13 and a VH electric clamp 14. Furthermore, the upper frame
Manuscript stand 2. An upper paper feed cassette section 3 and a manual paper feed section 5 are attached to constitute an upper unit 1A.

The lower frame has a sketch paper cassette section 4. Transcription/l? i
)! 11, #JIIlftffJ? ? An ffi device 12 and a fixing device B'l 120 are provided by appropriate means, and constitute a lower unit 1B.

1M, which is removed by rotating the front cover on the main body, is configured to be openable and closable along the copy paper conveyance path 17 via a device (not shown) between the casings. If the housing is such that it can be rotated along the copy paper conveyance path 17, it is possible to easily replace the various rollers interposed therein, and to remove copy paper that has failed in conveyance.

The operation of the above-mentioned configuration in the v4 position will be explained below.

The photosensitive drum 7 is a drum (not shown). 1111, it is driven in the direction of arrow a in the figure in synchronization with the optical system 9.

When the photoreceptor drum 7 starts al\, the photoreceptor drum 7 is uniformly irradiated with light by the charger 8 for charging. The optical system 9 forms a crotch image of the document by scattered light on the surface of the photoreceptor drum 7, and
Form a latent image. The developing device 10 develops the electrostatic 'a image on the photosensitive drum 7 with toner. The toner image formed on the photosensitive drum 7 as described above is sent onto the transfer band device 11.

At this time, if a page number indicating the page number of the image currently being formed is to be written in addition to the original image, a character 1 is written on the surface of the photoreceptor drum 7 by the writing unit KA. The configuration and operation of this writing unit KA will be explained in detail later.

On the other hand, the copy paper P1, P2 or P3 (hereinafter referred to as copy paper P) supplied from each paper feed section is fed by a pair of registration rollers 1.
By the rotation of 9, the image is conveyed onto the transfer charger 11. The rotation of the registration roller pair 19 is synchronized so that a drive signal causes the toner image on the photosensitive drum 7 to overlap the copy paper P after a predetermined time has elapsed after the paper stop switch 18 is turned on.

The copy paper P fed onto the transfer band 'F11 device 11 is
Transfer band? The toner image on the photosensitive drum 7 is transferred at ¥f611. The copy sheet P on which the toner image has been transferred is peeled off from the photosensitive drum 7 by a peeling band 71 12 and guided to a fixing device 20 . A toner image is melted and fixed on the copy paper P by a fixing device 20, and the copy paper P is guided to a wandering M unit ff21. Then, the copy paper P is delivered to the paper ejection tray 6 by the paper ejection device 21.
is discharged.

On the other hand, after the toner image on the photoreceptor drum 7 is transferred to the copy paper P, the residual toner remaining on the photoreceptor drum 7 is scraped off by a cleaning device 13. Furthermore, the afterimage of the charge on the photosensitive drum 7 is erased by the static elimination lamp 14 in preparation for the next copying operation.

The above series of operations is performed by a microcomputer controlling objects such as motors, lamps, and heaters in a fixed sequence in response to signals from operation switches, detection switches provided at appropriate locations, and other signal output means. This is achieved by

Next, we will discuss the drive system of the above-mentioned biting unit KA in the third section.
This will be explained with reference to the figures.

FIG. 3 is a perspective view of the drive system of the writing unit KA and the photosensitive drum 7. The writing unit KA is provided at a predetermined distance from the surface of the photosensitive drum 7, which is rotationally driven in the direction of the arrow a in the figure. The arrow 9A in the figure is the scattered light of the original M4 image supplied by the optical system 9, and is imaged on the imaging section 9B. The field unit KA is supported by shafts 30A and 30B, both ends of which are fixed within the main body so as to be parallel to the central axis direction of the photosensitive drum 7. Further, the writing unit KA is fixed to a part of the endless timing belt 31.

The timing belt 31 has one end supported by a pulley 32A, and the other end connected to the pulse motor 3 via a pulley 32B.
It is supported by 3. The pulse motor 33 is connected to a motor (not shown), and its rotation direction and rotation speed are controlled. By this rotational operation of the pulse motor 33, the self-loading unit KA is operated in the direction indicated by the arrow in the figure, and is set at a predetermined position in the direction indicated by the arrow in the figure. The writing unit KA is connected to a control l (not shown) via a harness 34.
It is connected to the device and is supplied with the character data to be written.

Next, the writing unit KA will be explained in detail with reference to FIGS. 4 to 8.

FIG. 4 is a perspective view of the writing unit KA.

Looking at FIG. 4, it can be seen that the writing unit KA is marked with an arrow C.
A shutter 41 is provided, one end of which is pivotally supported by a support shaft 40 so as to be able to move in an arc in a direction. A pinion 42 is fixed to one end of the support shaft 40 . Opposing the pinion 42, a rack 43 is provided inside the barring unit KA. The binion 42 and the rack 43 are provided so that their respective uneven surfaces fit together.

The rack 43 is supported by a solenoid 43.

The operation of the shutter 41 mentioned above will be explained using FIG. 5.

The rack 43 moves in the direction of arrow d in the figure by turning the solenoid 44 on and off. The solenoid 44 is
Connected to the control device. The on/off state of the solenoid 44 is controlled by supplying and stopping a drive signal from a control device (not shown). Solenoid 44 turns on and rack 4
3 is pulled upward, the pinion 42 moves toward the arrow 0 shown in the figure.
An arc movement is performed in one direction. Along with this movement of the pinion 42, the shutter 41 is also moved in an arc in the direction of the arrow C1 shown in the figure via the support shaft 40. When the solenoid 44 is turned off, the opposite operation is performed, and the shutter 41 is moved in a circular arc in the direction of arrow C2 in the figure.

Next, the internal structure of write unit KA will be explained with reference to FIG.

FIG. 6 is a sectional view of the writing unit in FIG. 4 taken along line KAeE-E' in the direction of the arrow.

Inside the writing unit KA, an LED array 50 is provided so as to face the photosensitive drum 7 . The LED array 50 is connected to a PC board 51, and each ED chip is turned on and off in a timely manner.

An imaging element 52 such as a SELFOC lens array is fixedly disposed between the LED array 50 and the photosensitive drum 7.

The light beam output from the LED array 50 is transmitted to the imaging element 52.
At this time, the image is formed on the photoreceptor drum 7 at the image formation position.At this time, the shutter 41 is operated in the direction of the arrow 01 in the figure as described above. The scattered light 9A supplied to the image portion r!r is blocked.

The LED array 50 described above has an appearance shown in FIG. 7.

In the LED array 50, LED chips 60 are arranged in a staggered manner.
The configuration includes one. The width FO of the LED chip 60 is longer than the distance 8 divided by 11 from the top of the top chip to the bottom of the bottom chip of the LED deep 6o. This is because the LED chips 60 that should be adjacent to each other are arranged so as to expose the same position by the width F1. LED chips 60 on LED array 50
The adjacent LED chips 16 are arranged as described above.
This is to avoid creating areas that are not exposed to light for each question.

The on/off timing of the shutter 41 and the LED array 50 described above will be explained with reference to the timing chart of FIG. 8.

Time t1 shown in FIG. t2. Δt1 and Δt2 are explained below.

tl: Time required for the shutter 41 to completely block the scattered light 9A after the shutter 41 head-on signal is supplied.

t2: Time required for the shutter 41 to completely release the scattered light 9A after the off signal is supplied to the shutter 41.

Δt1: Time from when lighting control of the LED array 50 is started until the shutter 41 is supplied with an on signal.

Δt2: Time from when the shutter 41 completely releases the scattered light 9A until the lighting of the LED array 50 is ended.

1. By controlling the lighting of the LED array 50 at the above-mentioned timing, it is possible to prevent the shape formed by the time required for opening and closing the shutter 41 from being formed on the photoreceptor drum 7 as an electrostatic latent image. .

The form of the write operation in the above-mentioned write unit KA will be explained with reference to FIGS. 9 to 11.

FIG. 9 shows the LED array 50. in the self-contained unit KA.
FIG. 4 is a perspective view with an imaging element 52 and a shutter 41 removed. The width SH is the scattered light 9△ with respect to the photoreceptor drum 7.
It shows the imaging width of .

Here, the width SH, the width A, the width G hidden by the shutter 41
1. The relationship between the vertical width G2 and the width of the written character is calculated by scattering light 9A.
This will be explained with reference to FIG. 10, which is a view seen in the direction of the arrow in the figure.

As can be seen from FIG. 10, the relationship is shown as vertical width G2>width ST11 width A>horizontal width G1>width I.

The vertical width G2>width 5t-1 is naturally set for the photosensitive drum 7.
This is to completely block the scattered light 9A from reaching the writing position on the surface.

The reason for setting width A>width G1>width I is for the following purpose. The reason why width A>width G1 is as described above. The reason why the width Gl>width I is set is that if the width is 015 width, the portion of (width - width G1) will be imaged by the scattered light 9a, and the written character will be incomplete.

Therefore, in order to form complete self-contained characters, each device was configured to maintain the above-mentioned relationship.

The written characters KK in the above-mentioned apparatus are as shown in FIG. 11, for example. The black part of the written character is L.
ED chip 60 is formed when the light is turned off.

However, no grid-like lines are actually formed in the written characters KK.

Next, a mechanism for counting documents as the cover CA on the main body is opened and opened will be explained with reference to FIGS. 11 to 13.

Figure 11 shows the main body 1 with cover ○A open.
FIG.

The cover 〇A is rotatably provided in the direction of arrow J in the figure via a support shaft.

This contact type switch SW has a configuration as shown in FIG. 12. FIG. 12 is a side view of the contact switch SW. A transmission member 65 is supported in a small hole W H formed in the charge 64 by an elastic member such as a spring, and a force is applied in the direction of arrow N1 in the figure. A control i! (not shown) is provided below this transmission member 65. A contact switch SW is provided.

The contact type switch SW having such a configuration is turned on when the cover CA is closed and the transmission member 65 in contact with the cover ○A is pressed in the direction of the arrow N2 shown in the figure. The contact switch SW is provided near the support shaft. This can reduce malfunctions and erroneous operations.

Returning to FIG. 13, what is placed on the document table 2 is the document GE. The above-mentioned written characters KK for the manuscript GE
The relationship between the writing position and the position of the LED array 50 is the first
This will be explained with reference to FIG.

FIG. 13 is a front view of the document table 2. FIG.

Here, the original G placed on the left side of the original table 2 in the figure.
If the writing position of the writing character KK is position 70A in E, the position of the LED array 50 of the self-writing unit KA in the drive system of the writing unit KA is as follows.

That is, in the image forming possible range WA on the photosensitive drum 7 (hereinafter referred to as circle W), position 8170A is the range WA.
When the LED array 50 is at a distance of x2 from the upper limit of
The position of is controlled to be a distance of x2 from the lower limit of range WA. This is because the original image is inverted by the lens 25 in the optical system 9 described above. In order to supply the inverted original image to the photosensitive drum 7, the LED array 5
The t control is performed so that the position of 0 becomes the above-mentioned position.

Next, the operation panel SO for executing the above-described character writing will be explained using the 15th factor.

FIG. 14 is a front view of the operation panel SO.

The block on the right side of the figure is provided with a preheat key 802 for preheating the main body, an interrupt key 81 for setting an interrupt mode for interrupt copying, and a copy key 82 for executing a copying operation.

A numeric keypad 83 is provided to the left of the copy key 82 for setting the number of copies and the like. Above the numeric keypad 83,
A display section 84 is provided to display the set number of copies and the like. This display section 84 shows the writing unit KA when the character writing mode is selected and during copying operation.
The number of pages to be written is displayed. Numeric keypad 83
On the left side of the display section 84 are provided cassette setting keys 85A and 85B for setting the paper feed cassette to be used. A status display section 86 that displays the status on the main body is provided to the left of the cassette setting keys 85A and 85[3. On the left side of the status display section 86, there are provided a density adjustment key 87 for adjusting the density of copying and an automatic exposure key 88 for automatically increasing the density of copying by 14 m5. Auto exposure key 8
To the left of 8 is the equal/magnification key 8 for setting the same-size copy.
9 is provided. To the left of the same size key 89, an enlargement key 90 is provided for setting a predetermined enlarged copy.

To the left of the enlargement key 90, reduction keys 91A, 91B, and 91C are provided for setting a predetermined reduction copy. To the left of the reduction key 91C is an arbitrary enlarged copy (1%
There are provided an enlargement key 92A for setting an arbitrary reduction (up to 154% in increments of 154%) and a reduction key 92B for setting arbitrary reduction copying (up to 65% in 1% increments). A magnification display section 93 for displaying the set magnification is provided above the enlargement key 92A and reduction key 92B. A character writing mode setting key 94 for setting a character writing mode is provided to the left of the reduction key 92B. On the left side of the character writing mode setting key 94, a page continuous copying key 95 is provided for forming two pages of original images by pressing the copying key 82 once. Area designation keys 96A, 96B, 96G, and 96D are provided to the left of the page continuous copying key 95 for designating the writing position f170A.

Next, the control system on the main body in the above-mentioned character writing mode will be explained with reference to FIG.

In the center of the figure is the CP that controls IIJ 1m11 on the main body.
There is U100. The input section of the CPU 100 includes a character writing mode setting key 94. Page continuous copying key 95°Each area specification key for specifying the writing position 101°Operation panel SO
The other input key 2 above is connected to the character generator 102 for the character KK and the output portions of the contact type switches SW described above.

The output section of the CPU 100 is connected to the input sections of the drivers 103 and 104, and the input sections of the drivers 10 and 5, respectively. The driver 103 is connected to a solenoid 44 for operating the shutter 41. The driver 104 is connected to the LED array 50 and the character generator 1
Each of the LED chips 60 is turned on at a timing corresponding to the data of 02. The driver 105 is connected to the pulse motor 53, and controls the amount and direction of rotation of the pulse motor 53 based on the area designation key 101 and in accordance with signals from the CPU 100. Further, for example, when writing a page as writing characters KK, the data contents of the character generator 102 are updated by turning on the contact switch SW to write the next number.

The operation of the copying machine with the above configuration will be explained with reference to FIG. 16. Here, writing of consecutive pages will be explained.

First, the power is turned on, the original GE is set in the main body 1, which is in a copying operation standby state, and the cover A is closed.

Next, the state of the copied image is set using each key on the operation panel SO. At this time, the character writing mode is first set by pressing the character writing mode setting key 94. Furthermore, use the area designation key 101 to write to f! ! 70A is specified.

Subsequently, after the number of copies is set using the numeric keypad 83, the copying key 82 is pressed to start the copying operation.

As described above, when the cover OA is closed, the contact switch SW is turned on, and the output data of the character generator 102 is updated to output the next number.

With the start of the T copying operation, the self-loading unit KA is positioned using the drive signal CPLJl 00 as described above. Subsequently, the shutter 41 is lowered and the LE
Character writing is performed in the D array 50.

For each original GE, a GE replacement operation is first performed. The output data of the character generator 102 is updated again when the cover ○A is opened due to the replacement operation of the original GE, and the next number is output.

In this way, until character writing mode is released,
31 on the duplicate image! Page writing will be performed at the number.

The copy paper P on which pages have been written is ejected to the top of the main body in a format as shown in FIG. 17, for example. However, this is the case where the set number of copies is one.

The apparatus configured as described above is efficient because it performs page writing, which conventionally did not allow copy sheets to be attached, in the same manner as the copying operation.

Note that the present invention is not limited to this embodiment.

It does not matter if it is an optical switch instead of a contact type switch. By changing the content of the character generator and changing the area designation, cause 18 or as shown in Figure 19,
Writing characters KK can be written on both 11KM of the original.

Regarding the LED array, by increasing the number of LED chips, it is possible to write more complex characters over a wider range.

The present invention is not limited to copying machines, but can be applied to image forming V4W1 using electrophotographic technology to obtain similar effects.

[Effects of the Invention] As described in detail above, according to the present invention, since one-stroke writing processing is performed in an analog manner, the amount of information on an image-formed object on which an image is formed can be economically improved.

[Brief explanation of the drawing]

1 to 17 show an embodiment of the present invention, in which FIG. 1 is a perspective view of a copying machine, FIG. 2 is a sectional view of the copying machine, and FIG. 3 is a drive of a loading unit. A perspective view of the system, FIG. 4 is a perspective view of the writing unit, FIG. 5 is a side view of the shutter drive system, FIG. 6 is a sectional view of the writing unit, FIG. 7 is a front view of the LED array, and FIG. 8 9 is a perspective view of the LED array, imaging element, and shutter. FIG. 10 is a front view of the photosensitive drum to explain the writing width. FIG. 11 is a self-written character. Figure 12 is a side view of the contact type switch, Figure 13 is a front view of the document table, Figure 14 is a front view of the operation panel, Figure 15 is a block diagram of the control system, and Figure 16 is a diagram for explaining the control system.
The figure is a flowchart of the page number character writing mode, FIG. 17 is a diagram for explaining the state of image formation on copy paper after copying is completed, and FIGS. 18 and 19 are copy sheets for image formation in other embodiments. FIG. KA...Writing unit, 7...Photosensitive drum, 3
3...Pulse motor, 41...Shutter, 50...
・LED array, 52...Imaging element, CA...Cover, SW...Contact type switch, 94...Character writing mode setting key, 95...Page continuous copy key 100・
...cpullol...area setting key 102...
・Character generator

Claims (3)

[Claims] (1) A loading table on which a document is placed; an openable and closable pressing member that presses the document against this loading table; an optical system that optically guides the image of the document on the placing table; an image carrier that electrostatically forms an image guided by the image on its surface; a storage device that stores image data indicating the number of pages; and an output device that outputs the data stored by the storage device; Update means for updating the data output by the output means by opening and closing the pressing member, and character writing means for sequentially forming an image in the image carrier according to the data updated by the update means. An image forming apparatus characterized by: (2) One end of the pressing member is directed to be openable and closable on the mounting table,
2. The image forming apparatus according to claim 1, further comprising updating means provided near a portion where the pressing member is designated. (3) The image forming apparatus according to claim 1 or claim 2, further comprising a display means for displaying the data outputted by the output means.