JPS61245148A - Copying machine - Google Patents

Abstract

PURPOSE:To confirm whether or not there is a forgetfully unerased part in a page which is not displayed currently by turning off a power source after rewinding a board sheet up to the 1st page if the power source is turned off while a page other than the 1st page is displayed. CONSTITUTION:When a page other than the 1st page, e.g. the 3rd page is displayed on the board sheet 3, a mark sensor 47 detects a page detection mark to confirm the display of the 3rd page in this case and outputs a signal L from an input B to an AND gate 69 as a signal H through an inverter 74. At this time, a gate 69 inputs an input signal A after it is inverted to a signal H through an inverter 74 and inputs an input signal C after it is inverted to a signal H through an inverter 73, and the gate 69 outputs a signal H to drive a roller 36 through a gate 70. Then, when sensors 46 and 47 detects the mark of the 1st page, the roller 36 is stopped and the input B changes into a signal H; and a gate 68 outputs a signal H to turn off a relay 61, thereby turning off the power source of the device completely.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an image forming apparatus, and particularly to a copying apparatus that copies an image written on a sheet member having a length of multiple pages page by page. It is related to.

[Prior art]

2. Description of the Related Art Conventionally, a copying apparatus has been proposed in which characters, nine figures, etc. are written on each page of a sheet member having a length corresponding to a plurality of pages, and copies are made for each page while winding up the sheet member with a take-up roll or the like. For example, if such a copying device is used at a conference, etc., the content of the meeting can be written on a sheet member as a blackboard and the content can be copied at the same time, and attendees do not need to copy the content of the meeting written on the sheet member. It is a convenient device.

[Problems with conventional technology]

However, the above-described copying apparatus has a sheet member with a length corresponding to a plurality of pages, and the writing surface of the sheet member always exposes only one page.

All other pages are either wound around take-up rollers (and rewind rollers) or are located within the reproduction device where they are not visible from the outside. therefore.

For example, when a meeting ends, the characters on the sheet member located in the writing section of the copying device can be seen by the attendees, so they will not forget to erase them, but the characters on other pages of the sheet member will be erased. It is not possible to check whether it has been written,
Sometimes I forget to turn it off.

In general, the contents of meetings are often kept secret, and there is a risk that they may be read by outsiders.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional drawbacks, an object of the present invention is to provide a copying apparatus that can reliably confirm an image written on a movable sheet member having the length of multiple pages and prevent forgetting to erase the image. That is.

[Key points of the invention]

In order to achieve the above object, the present invention provides a copying machine having a sheet member having a length of multiple pages, means for moving the sheet member, and means for copying an image written on the sheet member. In the device.

The apparatus is characterized by having a power supply holding means that holds the power supply until the sheet member moves to a predetermined position when the power switch is turned off.

[Embodiments of the invention]

Hereinafter, two embodiments of the present invention will be described in detail with reference to the drawings.

In this embodiment, it is possible to copy a normal original as well as an image on a sheet member. This will be explained using a so-called blackboard copying machine.

FIG. 2 is a perspective view showing the overall structure of the blackboard-duty copying machine of this embodiment, and FIG. 3 is a perspective view of the blackboard-copying machine of this embodiment in a blackboard copying state.

In the figure, the blackboard-duty copying machine has a board section 1 and a copying section 2.
The board section 1 is composed of a frame la, a board sheet 3. It consists of an i-working section 4, and has a board optical system and a winding device inside. The copying section 2 is provided with a document table including a document cover 2a at the top thereof, and is mounted so as to be movable back and forth on a rail 5a provided on the copying machine table 5.

When copying a document by placing it under the document cover 2a, use the second
The copying section 2 is moved forward as shown in the figure, and when an image on the board sheet 3 is to be copied, the copying section 2 is retracted to the rear as shown in FIG.

FIG. 4 is a diagram showing the internal configuration of the copying section 2. As shown in FIG. The document table is composed of a document glass 6, a document cover 2a + a leading edge indicator plate 2b, etc. When copying a document (not shown) placed on the document glass 6, the light from the light source 7 is used to irradiate to
The reflected light from the original is transferred to the first mirror for copying 8. The photosensitive surface 12 of the photosensitive drum 11 is irradiated (exposed) via the copying lens 9 a +the second copying mirror 10 . At this time, a uniform charge is applied to the photosensitive surface 12 by the charger 13 in advance,
The non-image portion is neutralized by the blank lamp 14, and an electrostatic latent image is formed on the photosensitive surface 12 by the above-described exposure. The electrostatic latent image formed on the photosensitive surface 12 is transferred to the developing device 1.
6, the toner image is visualized and transferred to a transfer paper fed from a paper feed cassette 18 via a paper feed roller 19 and a timing roller 20 in synchronization with the toner image in a transfer device 17. After the transferred toner image on the transfer paper is thermally fixed by a fixing device 21, the transfer paper is discharged to the outside of the machine by a paper discharge roller 22. On the other hand, residual toner on the photosensitive surface 12 that has not been completely transferred by the transfer device 17 is removed by a cleaner 23, and a uniform charge is applied to the photosensitive surface 12 by a charger 13 in preparation for re-exposure.

On the other hand, below the original glass 6, the housing 2b of the copying section 2 is provided with an exposure opening 24 for board copying (hereinafter referred to as exposure opening) and an exposure opening 25 for original copying. A shank 26 is provided to prevent light from entering the machine.

Next, the configuration of the board section 1 will be explained using FIG. 5. The winding device is a winding reroller 35.36. Feed roller 37a~
37d, etc., and the sheet-like board sheet 3 is wound around the winding roller 36 in large numbers.
to the winding roller 35 via the feed rollers 37a to 37d.
At this time, the winding is performed at a constant speed by a drive mechanism (not shown), and the unwinding is performed by winding on the take-up reroller 36. Further, the board sheet 3 is kept flat by the bank-up board 38. This backup board 38 is provided at a position corresponding to the portion (opening) not covered by the frame 1a, and characters can be read through the opening.

Write figures etc. on board sheet 3. During this writing, the backup board 38 covers the board sheet 3 from the rear, making it easier to write characters, etc. on the board sheet 3.

In addition, the blackboard optical system is a fluorescent lamp 39. The first mirror 40, the second
Mirror 41. Light from the fluorescent lamp 39 is irradiated onto the board sheet 3, which is composed of a blackboard lens 42 and the like, and which is formed in a planar shape between the above-mentioned feed rollers 373 and 37b.

FIG. 7 shows the optical path of reflected light 32 from the board sheet 3 when the light from the fluorescent lamp 39 is irradiated onto the board sheet 3 on which characters 1, figures, etc. are drawn.

As shown in the figure, the reflected light 32 is bent 90 degrees by a first mirror 40 arranged at 45 degrees with respect to the two reflected lights 32, and further bent 90 degrees downward by a second mirror 41. The photoreceptor drum 11 in the copying section 2 is exposed through the blackboard lens 42 . Also.

The original glass 6, shutter 26, etc. located on the optical path of the reflected light 32 are moved when it is detected by a detection means (not shown) that the copying section 2 is in a position to copy an image on the board sheet 3. 1. For example, the shutter 26 shown in FIG. 4 has been moved to the position shown by the dotted line, and the document glass 6 and document cover 2a have also been moved to positions where they do not block the exposure port 24, and the document passing through the blackboard lens 42 has been moved to the position indicated by the dotted line. The reflected light 32 is.

The photosensitive surface 12 passes through the exposure opening 24 provided in the housing 2b.
can be irradiated with light. Further, when the copying lens 9a is at the solid line position blocking the optical path of the reflected light 32, it can also be moved to the dotted line position 9b.

Further, as shown in FIG. 6 on the board sheet 3.

A first page detection mark 43 is provided at one location on the top edge,
At the bottom end, there are page detection marks 44a at regular intervals m,
44b, . Also, there is a first page detection mark 4 inside the board section 1.
3 and page detection marks 44a, 44b to 44e, respectively, are provided with mark sensors 46 and 47, and when both mark sensors 46 and 47 detect the marks, the first page is exposed at the writing position. There is.

On the other hand, the operation section 4 is operated by a power switch 48 as shown in FIG.
．． Each page instruction switch 49a to 49e.

Copy switch 50. Emergency stop switch 54. and weight lamp 51. Each page instruction switch 49a to 49e
Page display lamps 52a to 52e that light up when turned on
and an alarm lamp 53. The wait lamp 51 lights up when copying conditions are not met, such as when there is no transfer paper or when the fixing device 21 has not reached a predetermined temperature.

The alarm lamp 53 lights up when a detection means (not shown) detects that the copying section 2 is not in a position to copy an image on the board sheet 3. Further, the emergency stop switch 54 is a switch to be operated in an emergency, for example, when a finger is caught between the frame 1a and the board sheet 30, and is disposed in a recess provided in the operating portion 4.

A blackboard/blackboard copying machine with the above mechanism is shown in Figure 1 (a).
It has a power supply circuit shown in ) and a control circuit that controls part of the machine shown in the same figure. In the same figure.

An alternating current (hereinafter referred to as AC) load circuit 55 is used as a power source for the AC motor and fluorescent lamp 39 that require single-phase AC power in the board section 1, and a direct current (hereinafter referred to as DC) control circuit 5.
Reference numeral 6 includes a control circuit for controlling the relay 61 and the AC load circuit 55 in the board section 1, and the like.

The AC load circuit 55 receives AC current from a plug 57 connected to an outlet (not shown), and the fuse 5
8. Emergency prevention switch 54. It is input via the power switch 48. Further, an outlet 59 is connected in parallel to the AC load circuit 55, and a plug 60 is connected to the outlet 59.

Further, the DC control circuit 56 includes a switch 48a (48 and 48a are double switches), a relay 61, etc., which is turned on at the same time as the power switch is turned on, and the DC control circuit 56 has an AC voltage. The voltage is transformed by a transformer 62, converted to a DC voltage by a rectifier circuit 63, and a DC current is input.

The contact 61a of the relay 61 is connected in parallel with the above-mentioned power switch 48, and after the relay 61 is turned on, the AC current input from the plug 57 is transferred to the power switch 48 and the contact 6.
1a.

On the other hand, the AC load circuit 64 of the copying section 2 is used as a power source for a motor for rotating the photosensitive drum 11 in the copying section 2, a heat source for the fixing device 21, and the like. This AC load circuit 64 receives an AC current input through the plug 60 connected to the outlet 59 described above, and at this time, the fuse 65. Operation unit 4
It is input via the power switch 31 on the copying unit side, which is not provided in the. Further, the DC control circuit 65 is a control circuit that performs overall control of the copying section 2, and inputs a DC voltage obtained by reducing the AC voltage input from the plug 60 by a transformer 66 and rectifying it by a rectifier circuit 67.

Further, the DC control circuits 56 and 65 are connected by a connection line via an interface (not shown), and control signals are inputted and outputted between the board section 1 and the copying section 2.

On the other hand, the control circuit in FIG.
Two AND gates 68, 69 .
OR gate 70. Set-reset flip-flop (hereinafter referred to as FF) 71. Three inverters 72, 72.7
4, the on/off signal of the power switch 48a is input to input A, and the input B is input to determine whether the board sheet 3 is in the position where the first page is displayed (home position). A copying operation signal sent from the DC control circuit 65 of the copying section via the interface is inputted to the input C.

Further, when the power switch 48 is on, a high signal is input to the input A, and when it is off, a low signal is input to the input A.

Further, when the board sheet 3 is at the home position, a high signal is input to the human power B, and when it is not at the home position, a low signal is input. Furthermore, when the copying section 2 is performing a copying operation, a high signal is input to the input C, and when the copying section 2 is not performing a copying operation, a low signal is input. Input A is FF71
A signal is input to the set terminal of the FF 71 and outputs a signal to turn on and off the relay 61 from the output terminal of the FF 71. The input A is also input to the inverter 72, the signal of the input A is inverted by the inverter 72, and the output of the inverter 72, together with the inverted outputs of the inputs B and C by the inverter 73, is
When all the signals input to the D gate 68 and input to the AND gate 68 are high signals, the FF 71 is reset by the output of the AND gate 68, and the output of the above-mentioned 0FF 71 is inverted. Also, the AND gate 69 has input A, input B, and input C.
All the inverted signals of are input, and when all of these inverted signals are high signals, a signal for rewinding the board sheet 3 is outputted via the OR gate 70. In addition to the output signal of the AND gate 69, a signal for normally rewinding the board sheet 3 is input to the OR gate 70.

When using the blackboard copying machine using the circuit configuration described above, first press the power switch 48 of the operation unit 4, and then turn on the AC load circuits 55, 64, . and DC control circuit 56.65 to AC
and supplying DC power to the board section 1. Each mechanism of the copying section 2 is driven and the control circuit etc. are operated. At this time, a high signal is output from input A to the set terminal of FF71, and the FF
A signal for driving the relay 61 is output from the output terminal 71. This signal turns on the contact 61a of the relay 61, and the AC current input from the plug 57 is transferred to the power switch 48.
Alternatively, the power flows through the contact 61a and supplies power to the AC load circuit 55 and the like.

Next, characters or the like are written on the board sheet 3, and each page of the board sheet 3 on which one character or the like is written is copied. During this time, the power switch 48. The contact 61a is in the on state, and the AC load circuit 55 and the like are connected to the board section 1. Power is supplied to the mechanism drive 1 mechanism control in the copying section 2. When the meeting, etc. is over, the power switch 48 is turned off, but the board seat 3
Different processes are performed depending on the page that is exposed in the opening of the frame la.

For example, if the mark sensors 46 and 47 confirm that the first page of the board sheet 3 is displayed,
A high signal is input from input B to the AND gate 68, and since the power switch 48a is off at this time, the inverter 7
2, a high signal is input to the AND gate 68, and since no copying operation signal has been received, the AND gate 68 outputs a high signal to the reset terminal of the FF 71 to turn off the relay 61. Therefore, the AC load circuit 55
Since the power switch 48 and contact 61a are turned off, no power is supplied to the device, the first page of the board sheet 3 is exposed, and the power to the device is completely turned off. At this time, the first page can of course be viewed by the attendees of the meeting, and if the content of the meeting has been written on the first page of the board sheet 3, it can be erased.

On the other hand, when the board sheet 3 is displayed other than the first page, for example, the third page, the page detection mark 44
The mark sensor 47 detects c.

Check the appearance on the third page of board sheet 3, and
A low signal from input B is outputted to AND gate 69 via inverter 74 as a high signal.

At this time, the input A signal is inverted to a high signal and input to the AND gate 69 via the inverter 72.

The signal at the input C is inverted to a high signal and inputted through the inverter 73, and the output of the AND gate 69 becomes a high signal and drives the winding roller 36 through the OR gate 70, and the mark sensors 46 and 47 Each first page detection mark 43. When the page detection mark 44a is detected, the take-up roller 36 is stopped and the input B changes from a low signal to a high signal, so the output of the AND gate 68 becomes a high signal and turns off the contact 61a of the relay 61 as described above.

Turn off the device completely. Therefore, the board sheet 3 is rewound from the third page to the first page after the power switch 48 is turned off until the relay 61 is turned off, and during that time the characters written on the board sheet 3 cannot be checked. When an attendee confirms the writing of one character, etc., the writing on that page can be sequentially erased.

As described above, in the two embodiments, when the power switch 48 is turned off when a page other than the first page of the board sheet 3 is displayed, rewinding is started, and the rewinding is stopped after reaching the first page, and then the power is turned off. Yes.

The written page on the board sheet 3 can be reliably checked at the end of a meeting, etc.

In this embodiment, writing starts from the first page.

Since it was assumed that the pages would be changed and written sequentially, it was rewound to the first page when the power switch 48 was turned off. However, if you wanted to check even more strictly, when the power switch 48 was turned off, it would be rewound to the first page. After the final page appears, the device is rewound to the first page, and then the power is turned off.

It may be possible to check all pages. With this configuration, the possibility of forgetting to turn off the power is further reduced.

〔Effect of the invention〕

As explained in detail above, according to the present invention, when the main power of the copying machine is turned off, a sheet member having multiple pages returns to the first page, so it is possible to ensure that there is writing on pages that are not exposed. This allows you to visually check whether you have forgotten to erase the contents of a meeting, etc.

Therefore, the confidentiality of the content written on the sheet member, such as the content of the meeting, is ensured.

[Brief explanation of drawings]

FIG. 1(a) is a power supply circuit diagram of the copying apparatus of the present invention. FIG. 1(b) is a control circuit diagram of the copying apparatus of the present invention. FIGS. 2 and 3 are perspective views of the blackboard copying device. FIG. 4 is a configuration diagram of the copying section. FIG. 5 is a configuration diagram of the board section. Figure 6 is a configuration diagram of the board sheet. FIG. 7 is a configuration diagram illustrating the optical path within the board sheet. FIG. 8 is a configuration diagram of the operating section. 1... Board section 2... Copy section 3... Board sheet 12... Photosensitive drum 43... First page detection marks 44a, 44b... Page detection marks 46, 47...
・Mark sensor 48...Power switch 55.64...AC load circuit 56.65...DC control circuit 61...Relay 61a...Contact 68.69...AND gate 70...OR Gate 71 ・ ・ ・ FF 72 to 74... Inverter patent Applicant Casio Computer Co., Ltd. Same as above
Casio Electronics Industries Co., Ltd. Figure 4

Claims (1)

[Claims] In a copying apparatus having a sheet member having a length corresponding to a plurality of pages, means for moving the sheet member, and means for copying an image written on the sheet member, when the power switch is turned off, the sheet member until it moves into position.
A copying apparatus characterized by having a power supply holding means for holding a power supply.