JP2926182B2 - Image processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention has a function of projecting a projection document on a screen like an overhead projector, and a function of forming an image of a document on paper or a transparent sheet like a copier,
The present invention relates to an image processing apparatus capable of creating a projection document and projecting the projection document.

[Prior art]

Conventional overhead projectors (hereinafter, referred to as OHP) are known in two types, a transmission type and a reflection type. The former transmissive type illuminates a projection original from the lower surface of a document table, and projects an image of the projection document on a screen through a projection lens and a reflection mirror arranged above the upper surface of the document table. It is. In the case of the reflection type, the projection document placed on the reflection type Fresnel lens is illuminated from above, and the reflection image of the projection document is projected on the screen through the projection lens and the reflection mirror arranged above the Fresnel lens. It is to project. And as a projection original used for the above-mentioned OHP, apart from a simple original in which figures and characters can be created by handwriting with a colored pen or the like directly on a transparent sheet, usually using an electrophotographic copying machine or the like, The necessary images are copied and created on the transparent sheet. Therefore, it is necessary to prepare a projection manuscript in advance when giving a class or explanation using OHP at a school, various explanation venues, conference rooms, and the like. For this reason, even if it is suddenly required to project a document that is not prepared as a projection document during explanation or during a meeting, a projection document cannot be created and cannot be projected without a copying machine nearby. Therefore, conventionally, as shown in FIG. 19 and FIG.
There has been proposed an image processing apparatus having both functions of a copying machine and a copying machine, wherein a projection original used for OHP can be obtained by copying using the above copying machine (Japanese Patent Laid-Open No. 59-201033 and Japanese Utility Model Application Laid-Open No. JP-A-62-84039). In FIG. 19, the original cover 203 on the apparatus main body 201 is openable and closable at the time of copying in the reflection type, and a reflection type light collector 205 such as a Fresnel lens is arranged on the upper surface of the original cover 203, and above it. The projection unit 207 is formed. The one in Fig. 20
The platen 202 on the apparatus body 201 moves during copying in the transmission type,
At the time of projection, the document table 202 is moved from above the light collector 205 arranged above the apparatus main body 201, and the projection unit 207 is illuminated by the illumination lamp 209 built in the lower part of the light collector 205.

[Problems to be solved by the invention]

In the conventional image processing apparatus as described above, when the original is set on the original platen or the original is replaced, the projection unit becomes an obstacle, and when the projection unit is stored in the apparatus body, the original platen moves. In such a case, the platen may collide with the projection unit and damage the apparatus. Therefore, an object of the present invention is to provide an image processing apparatus that can solve the above-described problems of the conventional image processing apparatus.

[Means for solving the problems]

That is, an image processing apparatus according to the present invention includes an input section for inputting an image of a document, a document table on which the document is set, and which is movable along the input section, and a projection document arranged in parallel with the input section. Is set on the reflection type light collecting plate, and an image forming unit that forms an image input from the input unit on a sheet, and is set on the reflection type light collecting plate while being supported on the reflection type light collecting plate. A projection unit that projects the image of the projection original, and that can move the platen in a state of being stored in a lower part of the platen; and a storage unit that allows the projection unit to move the platen. And a control unit for prohibiting an image forming operation of the image forming unit when the projection unit is not at the storage position. The image forming unit includes a paper feed port and a paper discharge port,
The projection unit is stored at a position that does not intersect with the paper supply and discharge path, so that the storage of the projection unit does not hinder the paper supply and discharge of the image forming unit.

【Example】

Hereinafter, an embodiment of the image processing apparatus of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 7, an apparatus main body 1 having an image forming function capable of forming a projection original by copying or the like includes a document table 2 movably mounted on an upper part of the apparatus main body 1, An image input unit for inputting an image of the document, for example, a reading unit 3 provided on the upper surface of the apparatus main body 1 and scanning a document on a document table 2 is provided. Reference numeral 4 denotes a mechanism for image formation built in the apparatus main body 1, for example, a printing mechanism. The apparatus main body 1 has the reading section 3 on its upper surface.
And a projection unit 6 attached to the side surface of the apparatus main body 1 and supported on the upper part of the light collector 5. The image forming function, for example, the copying function, of the apparatus main body 1 is incorporated in the apparatus main body 1, a reading table 3 movably mounted on the upper part thereof, a reading unit 3 installed on the upper surface of the apparatus main body 1 to scan a document. This is achieved with the printing mechanism 4. The printing mechanism 4 includes a printing unit, an automatic supply unit for the roll paper stored in the apparatus main body 1, a manual paper feeding unit, and a paper discharging unit. That is, the platen 12 driven by the motor 11 as shown in FIGS.
A printing unit, for example, a thermal head 13, a paper feed roller 14 closely attached to its lower part, and a paper discharge roller 15 closely adhered to its upper part are provided. Paper guides 16 and 17 are provided above and below the paper feed port A, a paper guide 18 for reversing the paper is provided around the platen 12, and a paper discharge port B is opposed to the paper guide 16 at the paper discharge port B. A paper guide 19 is provided. The paper feed port A and the paper discharge port B are formed above and below the same side end of the apparatus main body 1 and are closed when not in use by a member comprising a paper feed tray 21 rotatably mounted around a shaft 91. In use, the paper feed tray 21 is tilted down to open. The motor 11 that drives the platen 12 is a timing belt
Drive is transmitted to the platen 12 via the 101 and the intermediate gear 102 while being reduced to a predetermined rotational speed. A paper guide 23 in which a tray of roll paper 22 is stacked is provided in the apparatus main body 1, and the roll paper 22 is fed to the paper discharge roller 15 via the platen 12. S1 is a paper feed switch (sensor), S2 is a roll paper detection switch, S3
Is a paper ejection switch. The document table 2 movably mounted on the upper portion of the apparatus main body 1 is provided with a transparent plate 24 such as glass for supporting a document 25, and one end of the transparent plate 24 is supported by a support shaft (not shown). The motor 90 is driven from the light collector 5 side to the reading unit 3 side by the motor 90 together with the document cover 26 which is supported and is mounted so that the other end side can be opened and closed in the vertical direction about the support shaft. The reading unit 3 provided on the upper surface of the apparatus main body 1 and scanning a document on the document table 2 is configured by a contact image sensor 132 and the like. The reading unit 3 is provided with a copy end switch S4. When the reading unit 3 starts reading, the document table 2 moves at a constant speed, and the document illuminated by the light source 131 through the transparent plate 24 is condensed through the condensing lens array 133 to the contact type image sensor 132 that scans at regular intervals. As a result,
The data is read at regular intervals in the sub-scanning direction. The read data for each line is digitally processed by the control unit 134 for each bit in the main scanning direction and is binarized. This binarization processing will be described in detail with reference to FIG.
As shown in (1), the image sensor 132 has photoelectric conversion elements arranged in a line, and when irradiated with light, charges are accumulated in each element. The amount of this charge corresponds to the increase or decrease of light. Light data from the image sensor 132 is processed by the binarization processing circuit 251 and input to the thermal head 13 from the data input unit. Also, a timing pulse generation circuit
Reference numeral 253 outputs a timing pulse to the image sensor 132, the binarization processing circuit 251 and the output gate circuit 255. Note that the output gate circuit 255 divides one of them and outputs the other directly through a quaternary counter 257 to output a timing pulse, and the pulse selected by the output gate circuit 255 is sent from the write clock input unit to the thermal head 13. Is entered. That is, as shown in FIG. 11 (B), the image sensor 132 generates a voltage proportional to the charge accumulated in the internal element at the output at a ratio of 1: 1 with the timing of the sensor clock by the timing pulse generation circuit 253. . Next, as shown in FIG. 11 (C), at the pulse position of the timing pulse generation circuit 253, digitization can be performed by determining 1 or 0 depending on whether the output is above or below the slice level. This is controlled by the binarization processing circuit 251. If the data is sent to the thermal head 13 and copied as it is, the original can be copied at the same magnification. However, the reduced copy may be enlarged and projected as follows. For example, if the binarization is stopped once every four bits, the length of one line of bits decimated once every four times becomes a line of 3/4. By adding 1/4 of the blank space to 1 line, and transferring it to the thermal head 13 for printing, an image having a size of 3/4 in the main scanning direction is obtained. That is, when the timing pulse output from the timing pulse generation circuit 253 is counted by the quaternary counter 257, the first
A pulse can be generated at the fourth time as shown in FIG.
An output gate circuit outputs a timing pulse when the output of the quaternary counter 257 is 0 and outputs a timing pulse when the output is 1.
If it is stopped using 255, the timing clock shown in FIG. 11 (E) is obtained. Only when a pulse is applied to the write clock input unit, the thermal head 13 takes the data in the data input unit supplied from the binarization processing circuit 251 as valid and takes in the data internally. Parts are ignored.
As a result, the data stored in the thermal head 13 is as shown in FIG. The above is the method of packing data 3/4 times in the main scanning direction. In the sub-scanning direction, this is achieved by setting the feed speed of the reading to 4/3 times the feed speed of the sheet fed by the platen 12. When printing is performed as described above, the original is copied on a transparent paper for OHP in a size of 3/4, and this copy can be placed on the light collector 5 and enlarged and projected. The projection function of the projection unit 6 is such that a projection lens, which will be described later, can perform focusing even when the distance between the screen and the apparatus main body 1 changes, so that it is sufficient to perform enlarged projection according to the purpose. Next, on the upper surface of the apparatus main body 1, a reflection type light collector 5 is provided in parallel with the reading section 3. The reflection type light collector 5
Normally, it is composed of a Fresnel lens 27 and a reflective layer 28 formed of a metal deposition layer formed on the back surface thereof, and one end thereof is pivotally attached to the apparatus main body 1 and can be opened and closed as shown in FIG. As shown in FIG. 4, S5 is a light collector set switch for detecting whether the light collector 5 is securely set on the apparatus main body 1. The printing mechanism 4 is built in the apparatus main body 1 below the light collector 5. In this embodiment, the printing mechanism 4 for printing with the thermal head 13 is shown as the image forming mechanism, but may be an image forming mechanism such as an electronic copying machine or a laser printer. The projection unit 6 supported on the upper part of the light collecting plate 5
When the image forming function of the apparatus main body 1 is used, the arm 7 can be housed on the side of the apparatus main body 1 when the image forming function is used.
The projection unit 6 is not located at the side end of the apparatus main body 1 having the paper feed port A and the paper discharge port B, but instead falls on the opposite side, so that the image forming function can be used when the projection unit 6 is stored. It has become. 6 and 8.
As shown, not only the projection lens 111 in the machine frame 31 but also an illumination lamp 112 composed of a halogen lamp for illuminating a projection original placed on the light collector 5 and light source reflection mirrors 113 arranged on both sides thereof And condenser lens 114, and cooling fan
115 and built-in. The illumination lamp 112 is connected to the projection unit 6.
The lid 116 attached to the upper surface of the device can be opened and mounted or removed. On the machine frame 31, a reflection mirror 32 for projecting a reflection image of a projection document onto a screen is pivotally mounted at one end and is openable and closable. The reflecting mirror 32 is mounted so as to be able to rotate 360 ° about the projection lens 111. Therefore, it can be projected in any direction in all directions. As shown in FIG. 8, the light emitted from the illumination lamp 112 is
Along with the light reflected by the light source reflection mirror 113, the light is projected on the light collector 5 by the condenser lens 114. The Fresnel lens constituting the light collector 5 is an eccentric mirror, and the center of its size is the same as the center of the projection lens 111, and the optical center of the Fresnel lens shifted by the amount of eccentricity is the illumination. It is located at the center between the lamp 112 and the projection lens 111. Since the center of the size of the Fresnel lens coincides with the center of the reflection mirror 32, the image of the projection original on the Fresnel lens surface is entirely contained in the projection lens 111, and the image is not cut off. S6 is a mirror storage switch for detecting whether or not the reflection mirror 32 is stored, and S7 is a main body installation switch.
S8 and S9 are a projection unit set switch and a projection unit storage switch, respectively, which detect whether the position of the projection unit 6 is at the set position or the storage position as a projection unit position detecting means. By detecting the position of the projection unit 6 in this way, the illumination lamp 112 is always turned off when the projection unit 6 is stored along the apparatus main body 1. Also,
When the projection unit 6 is in a state other than the storage state or the set state, copying cannot be performed, thereby preventing the document table 2 and the projection unit 6 from colliding and damaging the apparatus. That is, the illumination lamp 112 is set to the projection unit set switch S8.
Cannot be turned on when is not turned on, and when the projection unit set switch S8 is turned off while the illumination lamp 112 is turned on, the illumination lamp 112 is immediately turned off. Further, a friction of the arm 7 is attached to a shaft 8 on which the projection unit 6 is mounted via the arm 7. As shown in FIG. 9, this friction has an arm lock spring 41 wound around the shaft 8 several times, one end of which is fixed to the arm 7 by a spring stopper 42, and the other end of which is fixed. But is in contact with the arm lock release lever 43. Arm 7 is horizontal When moving vertically, since the spring 41 is fixed to the arm 7 by the spring stopper 42, the shaft 8
, The arm 7 can be moved in the vertical direction. Reverse arm 7 To move the arm horizontally, the spring 41 is tightened against the shaft 8 and the arm 7 is locked and the arm 7 is locked.
Does not fall. To release this, unlock lever 43
When the is pressed, the spring 41 is loosened with respect to the shaft 8, and the arm 7 can be tilted while pressing the lever 43. The arm 7 is extendable and retractable, and as shown in FIG. 10, outer cylinders attached to the shaft 8 side and the projection section 6 side, respectively.
51 and 52, and inner cylinders 53 and 54 fixed in the outer cylinders 51 and 52 and protruding from the outer cylinders 51 and 52, respectively. The inner cylinders 53 and 54 are fitted to each other, and can slide up and down. Reference numeral 55 denotes a stop lever pivotally mounted in the inner cylinder, one end of which is urged by a spring 56 to press the ball 57 into a locking hole 58 formed in the inner cylinder 53,54. The other end of the stop lever 55 is connected to a telescopic button 59 provided on the outer cylinder 51. By pressing the telescopic button 59, the ball 57 is disengaged from the outer inner cylinder 54 and the arm 7 can be extended and contracted. ing. Of course, when the telescopic button 59 is released, the ball 57 is pressed into the predetermined locking hole 58 to hold the arm 7 at a predetermined length. As shown in FIG. 12, a power supply unit 81 controlled by a control unit including a control device 134 such as a CPU is connected to the device main body 1 and the illumination lamp 112. The power supply unit 81 includes a power switch S10, a power supply 82, a relay 83 interposed between the power supply 82 and the illumination lamp 112, and a relay 84 interposed between the power supply 82 and the apparatus main body 1. Switching means is provided to prevent both contacts of the relays 83 and 84 from being turned on under the control of the control device 134. Note that the capacity of the power supply 82 is set to be larger than the larger power consumption of the device body 1 and the illumination lamp 112 and smaller than the sum of the power consumption of the device body 1 and the illumination lamp 112. As shown in FIG. 1, a rotatable handle 33 is provided on the side opposite to the projection section 6 of the apparatus main body 1, and an operation panel 34 is also rotatably mounted on the inner side of the apparatus main body 1. ing. As shown in FIGS. 3 and 7, the operation panel 34 has a paper selection switch B1 and a magnification selection switch B2.
And a lamp switch B3 for turning on / off the lighting lamp 112
And a copy switch B4 for starting copying, a mode (character / photograph) changeover switch B5, and a density adjustment volume V. The paper selection switch B1 specifies whether the paper to be printed is a sheet for OHP projection or a thermal paper. The magnification selection switch B2 designates whether the copy magnification is equal, enlargement, or reduction. When the lamp switch B3 for instructing the operation of the projection unit 6 is pressed when the illumination lamp 112 is off, the relay 83 in FIG. 12 is turned on to turn on the illumination lamp 112, and the illumination lamp 1 is turned on.
When pressed when 12 is lit, relay 83 turns off,
The illumination lamp 112 is turned off. When the copy switch B4 for instructing the operation of the image forming unit is pressed when the copying operation is not performed, the relay 84 is turned on to start copying, and when pressed during the copying operation, the relay 84 is turned on.
Turns off to stop the copy operation. When the lamp switch B3 is turned on, even if the copy switch B4 is turned on, it is ignored. On the contrary, while the paper is set and the copy switch B4 is turned on to perform copying, even if the lamp switch B3 is turned on, it is ignored. There is no priority between the copy switch B4 and the lamp switch B3. Copying is not possible while the illumination lamp 112 is on, and it is only necessary that the illumination lamp 112 cannot be turned on during copying. If the user inserts a paper into the paper feed port A to set paper while the illumination lamp 112 is on, the power supply and the illumination lamp 112
Since it has nothing to do with the heat of irradiation, paper can be fed. As shown in FIGS. 4 and 5, a coupling member made up of a magnet 66 is attached to the upper end of the paper feed tray 21 of the rotating member.
The document cover 26 is attracted to the cover 67 to prevent the document cover 26 from opening and, consequently, the document table 2 from moving. Similarly, the rotatable handle 33 is shown in FIG.
As shown in (B), the head can be swung about the shaft 60 so as to be stored along the side end of the apparatus main body 1. In addition, it has a role of restricting the movement of the document table 2 according to the rotation. That is, the handle 33 pivotally attached to the apparatus main body 1 includes:
The following coupling member is provided. That is, the cam 61 is formed at the rotation fulcrum of the handle 33. In addition, insertion holes 63 and lock holes 64 are provided in the frames of the apparatus body 1 and the document table 2.
The lock pin 62 is movably inserted into the insertion hole 63 and the lock hole 64. Lock pin 62
Is biased toward the cam 61 by a spring 65. When the handle 33 is in the housed state along the apparatus main body 1 as shown in FIG.
The document table 2 is depressed by 65 so as to move out of the lock hole 64 of the document table 2. On the other hand, FIG. 13 (B)
When the handle 33 is raised to be portable as in
The lock pin 62 is pushed up by 61, and the lock pin 62
Are locked in the lock holes 64 so that the document table 2 cannot be moved. Next, the operation of the image processing apparatus of the present invention will be described. First, when using the image forming function of the apparatus of the present invention, the original cover 26 is opened, a copy original is placed on the transparent plate 24 so that the image surface faces the transparent plate 24, and the original cover 26 is closed. By pressing the copy switch B4 provided on the operation panel 34, the copying operation is started. Therefore, by supplying a sheet for projection for thermal coloring, thermal copying, etc., instead of the thermal paper for copying, to the paper feeding section of the apparatus main body 1, a projected original for OHP can be instantaneously obtained from the copied original. In the case of manual paper feed, feed tray 21
To feed the paper from the paper feed port A, and print between the paper feed roller 14 and the platen 12. In the case of roll paper, the paper is supplied directly from the paper guide 23 between the platen 12 and the paper discharge roller 15 for printing. Further, when the image processing apparatus of the present invention is used as an OHP, the document table 2 is moved from a reflection type light collector 5 composed of a Fresnel lens attached to the upper surface of the apparatus main body 1,
A projection original is placed on the light collector 5, and a lamp switch B3 provided on the operation panel 34 is pressed. Then, the projection original is illuminated by the illumination lamp 112, and the illuminated light strikes the light collector 5 and is reflected, and the reflected light is reflected by the projection lens in the projection unit 6.
It reaches the screen through 111 and reflective mirror 32,
This is for projecting an image of a projection original. Next, the operation will be described in detail with reference to the flowcharts of FIGS. 14 (A) to (D). In FIG. 14 (A), at step 300, the power switch S
When 10 is turned on, the power is turned on. In steps 302 to 307, the setting switch S7, the projection unit set switch S8, the light collector set switch S5, the paper feed switch S1, the roll paper detection switch S2, and the paper discharge switch S3 are set.
ON / OFF is checked, and if the switches S7, S8 and S5 are both ON and if the switches S1, S2 and S3 are both OFF, it is determined that the switch is normal in step 308 and the operation of the operation panel 34 in step 309. Enable. On the other hand, if any one of the switches S7 or S5 is OFF or any one of the switches S1, S2 or S3 is ON, it is determined in step 310 that the switch is abnormal, and
Loops until an error occurs (the copy switch B4 is lit). Here, if the projection unit set switch S8 is OFF, it is further checked in steps 312 and 313 whether the mirror storage switch S6 and the projection unit storage switch S9 are ON or OFF, and whether the reflection mirror 32 and the projection unit 6 are stored. Is determined, and if any of these switches is OFF, step 310 is executed.
To judge that the switch is abnormal. When the operation of the operation panel 34 becomes possible, as shown in FIG. 14 (B), ON / OFF of the paper selection switch B1, magnification selection switch B2, and mode selection switch B5 are checked in steps 312, 313, 314. At 315, 316, and 317, selection of paper, selection of magnification, and mode switching are performed. When the selection of the paper and the magnification and the switching of the mode are completed, it is checked in step 318 whether the illumination lamp 112 is on. If the light is off, it is determined in step 319 whether the projection unit 6 is set (the projection unit set switch S8 is ON). If the projection unit set switch S8 is OFF, step 3
Move on to feed operation 20. If the projection unit 6 is set, step 321
When the lamp switch B3 is turned on in step, the illumination lamp 112 is turned on in step 322, and the process proceeds to step 320. When the illumination lamp 112 is turned on and the projection original is set on the light collector 5, the projection original is projected on the screen via the projection lens 111 and the reflection mirror 32. If it is determined in step 318 that the illumination lamp 112 is on, the state of the projection unit 6 is determined in step 323. If the projection unit set switch S8 is OFF (the projection unit 6 is not set), In step 324, the illumination lamp 112 is turned off, and the process proceeds to step 311 in FIG. 14 (A). If the projection unit set switch S8 is ON in Step 323, the lamp switch B3 is turned ON in Step 325, and Step 3
The illumination lamp 112 is turned off at 26, and step 3 in FIG.
Move to 27. When the process proceeds to the sheet feeding operation in step 320, the state of the sheet feeding switch S1 is determined in step 328 as shown in FIG. 14 (C). That is, it is checked whether manual paper is set in the paper feed port A. If the paper feed switch S1 is ON, the state of the roll paper detection switch S2 is determined in step 329. That is, it is checked whether roll paper has been set. If the roll paper has not been set, the platen 12 is driven in step 330 to feed the manual paper. If the paper feed switch S1 is OFF in step 328, it is checked in step 331 whether the roll paper detection switch S2 is ON or OFF. If OFF, the process proceeds to FIG. 14A. When the roll paper detection switch S2 is turned on in Step 331 or the paper feeding operation is started in Step 330, the state of the paper discharge switch S3 is checked in Step 332. The paper output switch S3
If it is turned on, an error will occur if the installation switch S7 is off in step 333, and the process will proceed to step 311. If the setting switch S7 is ON, the projection unit set switch S8 is checked in step 334. If it is ON, the process proceeds to step 337. If it is OFF, it is checked in step 360 whether the illumination lamp 112 is turned on. If it is turned on, it is turned off in step 361, an error occurs, and the routine goes to step 311. If it is off, in steps 335 and 336, the mirror storage switch S6, the projection unit storage switch S9, and the condenser set switch S5
Is checked, and if it is OFF, an error occurs and the process proceeds to step 311. If it is ON, the ON / OFF of the light collector set switch S5 is checked in step 337. If the condenser set switch S5 is OFF, an error occurs and step 311 is executed.
If it is ON, the copy end switch S4 is checked in step 338, the document table 2 is manually set to the origin position, and if the copy end switch S4 is turned on, step 33
Move to 9. If the copy end switch S4 is OFF, the process returns to step 342 to check the switch until the copy end switch S4 is turned ON. When the process proceeds to step 339, it is determined in step 340 whether or not the illumination lamp 112 is lit, as shown in FIG.
If it is lit, the process proceeds to step 327 of FIG. 14 (A). That is, while the illumination lamp 112 is on, the copying operation cannot be performed even if the sheet is set. If the illumination lamp 112 is off, the copy switch B4 is checked in step 341. If it is off, FIG.
The process proceeds to step 342 to check the switches. When the copy switch B4 is turned on, a copy operation is started in step 343. This drives the motor 90,
The document table 2 on the light collector 5 starts moving to the left. Then, after reading the original by the reading unit 3, printing is performed by the thermal head 13. At this time, if the setting switch S7 and the light collector set switch S5 are turned off in steps 344 and 345, the copying operation is stopped in step 346, and the process proceeds to step 311 in FIG. 14 (A). If both the setting switch S7 and the light collector set switch S5 are ON, it is checked in step 347 how the state of the projection unit set switch S8 was before starting the copy operation. If the projection unit set switch S8 is OFF, step 34
At 8,349, the storage state of the reflection mirror 32 and the projection unit 6 is checked. When the storage state is released (the mirror storage switch S6 and the projection unit storage switch S9 are turned off), the copying operation is stopped at step 346. Even if the projection unit set switch S8 is ON, if the projection unit set switch S8 is turned OFF in step 350, the copying operation is stopped. If the ON state of the projection unit set switch S8 is maintained, it is checked in step 351 whether reading of the document has been completed. If the copy end switch S4 is turned on, step 352 is performed.
Terminates the copy operation, discharges the sheet in step 353, and returns to step 327 in FIG. 14 (A). If the copy end switch S4 is OFF, it is determined in step 354 whether the sheet has ended (whether the rear end of the sheet has passed the sheet feed switch S1 or the roll sheet detection switch S2 and a predetermined time has elapsed).
If the check is completed and the copy operation is completed, the copy operation is completed. Copy switch B4 is turned on in step 355 even if it does not end
If it is (forced), the copy operation is stopped, and if it is OFF, the process proceeds to step 356.

[Effects of the embodiment]

According to the embodiment described above, the projection unit 6 is connected to the apparatus main body 1.
And a paper feed port A and a paper discharge port B of the printing mechanism 4 are provided on the side opposite to the storage position, so that the projection unit 6 When stored in the lower part of the table 2, the projection unit 6 does not intersect with the paper feeding and discharging paths of the printing mechanism 4, so that image formation such as copying with the projection unit 6 stored can be performed. In addition, the storage state of the projection unit 6 is detected so that the document table 2 being moved does not collide with the projection unit 6 during image formation, and the movement of the document table 2 when the projection unit 6 is in the storage state. Because it is possible, it can be used extremely safely.

[Modification]

FIGS. 15 and 16 show a modification of the present invention, in which the arm 301 of the projection unit 6 can expand and contract in a plurality of stages, and the apparatus main body 1 is retracted in a state where the arm 301 is contracted.
It can be stored in the side of. The projection unit 6 can be rotated by the arm 301, and can be compactly stored in the side of the apparatus main body 1 by rotating 90 degrees in the horizontal direction during storage. . In this case, the position of the projection unit 6 hardly interferes with the copying function. FIG. 17 and FIG. 18 show another modification of the present invention, in which the arm 302 of the projection unit 6 can be stored in a side part of the apparatus main body 1 in a contracted state.

【The invention's effect】

ADVANTAGE OF THE INVENTION According to the image forming apparatus which concerns on this invention, the document table which is moving at the time of image formation is reliably prevented from colliding with a projection part, damage of an apparatus can be prevented and it can be used safely.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and is an overall explanatory view when used as an OHP, FIG. 2 is a perspective view showing a state where each part is stored in a predetermined position, FIG. 3 is a top view showing an internal structure, FIG. 4 is a schematic cross-sectional view when used as an OHP, FIG. 5 is a schematic cross-sectional view with the light collector opened, FIG. 6 is a main-portion cross-sectional view of the projection unit, FIG. FIG. 8 is a schematic view of a projected state of the OHP, FIG. 9 is an enlarged sectional view of friction of the arm, FIG. 10 is a sectional view of the arm, and FIGS. 11 (A) to 11 (G) are functions for forming reduced images. 12, FIG. 12 is a connection diagram of a switch control circuit, FIGS. 13 (A) and 13 (B) are cross-sectional views showing a platen lock mechanism by a handle, and FIGS. 14 (A) to (D) explain the operation. Flow chart, Figures 15 to 18
The drawings are respectively a plan view and a side view showing a modification, and FIGS. 19 and 20 are schematic cross-sectional views showing a conventional example. DESCRIPTION OF SYMBOLS 1 ... Device main body 2 ... Original platen 3 ... Reading part 4 ... Printing mechanism 5 ... Condenser, 6 ... Projection part 11 ... Motor, 12 ... Platen 13 ... Thermal head, 14 ... … Paper feed roller 15… Paper discharge roller, 16, 17, 18, 19… Paper guide 21… Paper feed tray, 22… Roll paper 23… Paper guide, 24… Transparent plate 25… Original, 26 Original document cover 31 Machine frame 32 Reflective mirror 33 Handle 34 Operation panel S1 Paper feed switch S2 Roll paper detection switch S3 Paper ejection switch S4 Copy end switch S5… Condenser set switch, S6… Mirror storage switch S7… Main body installation switch, S8… Projector set switch S9… Projector store switch

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshihiko Hirose 3167 Yamamiyacho, Kofu City, Yamanashi Prefecture Inside Nippon Seimitsu Kogyo Co., Ltd. (72) Inventor Takashi Kazuta 3167 Yamamiyacho, Kofu City, Yamanashi Prefecture Nippon Seimitsu Kogyo Co., Ltd. (72) Inventor Eiji Nakazawa 3167 Yamamiyacho, Kofu City, Yamanashi Prefecture Inside Nippon Seimitsu Kogyo Co., Ltd. (72) Inventor Hiroshi Saito 3167 Yamayamacho Town, Kofu City, Yamanashi Prefecture Nippon Seimitsu Industry Co., Ltd. (72) Inventor Masaki Oshima Yamanashi 3167 Yamamiya-cho, Kofu, Japan (56) References JP-A-59-201033 (JP, A) JP-A-62-116982 (JP, A) JP-A 1-117162 (JP, U ) Japanese Utility Model Showa 62-99047 (JP, U) Japanese Utility Model Showa 58-121035 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G03B 21/132

Claims (2)

(57) [Claims] An input section for inputting an image of a document, a document table on which the document is set and movable along the input section, and a projection document arranged in parallel with the input section are set. A reflection type light collector, an image forming unit for forming an image input from the input unit on a sheet, and the projection original set on the reflection type light collector while being supported on the reflection type light collector Projecting the image of, and a projecting unit that can move the platen while being stored in the lower part of the platen, and whether the projection unit is at the storage position where the platen can be moved. An image processing apparatus comprising: detecting means for detecting; and control means for prohibiting an image forming operation of the image forming unit when the projection unit is not at the storage position. 2. An image processing apparatus according to claim 1, wherein said image forming section has a paper feed port and a paper discharge port, and stores said projection section at a position not intersecting with the paper feed and paper discharge path. .