JPH04134331A - Projection device - Google Patents

Abstract

PURPOSE:To execute projection according to exposure order shown by the display of information which is previously recorded on a projection sheet, to facilitate an operation and to eliminate a mistake by displaying the information of a bar code or the like on the projection sheet. CONSTITUTION:A projection tray where the projection sheet 46 is set is arranged on one side of an original platen 44 and the bar code showing the order or the classification of the projection is displayed on the sheet 46 according to the content thereof. Therefore, when the sheet 46 which is projected is housed in a sheet housing part by a user, the bar codes on the respective sheets 46 are read by a read means, thereafter. Besides, it is controlled by a control means whether the sheet 46 sent from the housing part is temporarily held or carried to a projection part according to the outputted information. Thus, the operation is facilitated and the mistake of the order of the projection or the like does not occur.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a projection device such as an overhead projector (hereinafter referred to as OHP) or an electronic whiteboard that projects a projection sheet or slide onto a screen.

[Prior Art] This type of projection device generally enlarges and sequentially projects the contents of a large number of projection sheets prepared in advance onto a screen, and the projected images are used for lectures and research presentations. It is used to do things.

As shown in FIG. 8, in the conventional projection apparatus, a large number of projection sheets 346 are stacked in the order in which the user projects images and stored in a sheet supply tray 301.
2, the projection sheet 346 is sent out to the projection section 344 in order from the bottom and projected.

[Problems to be Solved by the Invention] However, in the conventional projection apparatus described above, it is necessary for the user to sort a large number of projection sheets in advance and arrange them on the projection section. Therefore, as the number of projection sheets increases, the working time becomes longer and the work becomes more complicated. In particular, when the number of projection sheets increases, there is a risk that the order will be incorrect.

This invention was made in view of the above points, and by simply recording code information on the projection sheet in advance, the projected notes can be automatically projected according to the order and classification based on the code information, making it easy to handle. The object of the present invention is to provide a projection device that is easy to use and does not cause errors in projection order.

[Means for Solving the Problems] In order to achieve the above object, the projection projector according to the present invention includes: a) displaying information such as a bar code on the projection sheet, and b) reading means for reading the information display. ,
C) a buffer means for temporarily holding the projection sheet; and d) a control means for controlling conveyance for projection sorting in accordance with the output of the reading means.

[Operation] According to the projection projector of the present invention having the above-described configuration, each projection sheet is preliminarily provided with information display, for example, a bar code indicating ranking or classification. After the user stores the sheet to be projected into the sheet storage section, the barcode of each projection sort is read by the reading means, and the read information is output to the control means. The control means determines whether the projection sheet sent out from the storage section is conveyed to the buffer means and temporarily held, whether it is conveyed directly to the projection section, or whether the projection sheet from the buffer means is conveyed to the projection section, according to the output information. control. In this way, the work of sending a large number of projection sheets to the projection unit for projection according to a predetermined order, or sending them to the projection unit for projection according to predetermined classifications is automatically performed. .

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

1 and 2 are perspective views of a projector according to an embodiment of the present invention as seen from the front and back sides, and FIGS. 3 and 4 are schematic configuration diagrams as seen from the side and back sides, and FIGS. 5
The figure is a block diagram of control, FIG. 6 is a schematic configuration diagram, and FIG. 7 is a front view of an OHP sheet having a bar code.

As shown in FIG. 1, the OHP 1 includes support legs 32,
A translucent screen 36 that can be written on with a felt pen or the like is attached to the front frame of a panel frame 34 that is vertically supported by the support legs 32.

On the back side of the screen 36, as shown in FIG. 2, the upper end of an image reflecting mirror 38 is rotatably attached to the upper end of the panel frame 34, and by extending the telescopic stay 39, the image reflecting mirror 38 is opened. held in state.

A scanner 40 that can read images projected onto the screen 36 and characters written on the screen 36 is installed at one end of the front side of the panel frame 34 .
The screen 36 is provided vertically along the screen 36.
It has a structure that allows scanning in the directions of arrows G and H (Fig. 1).

On the other hand, as shown in FIG. 3, a projector lens 47 is provided below the image reflecting mirror 38, and a light-transmissive document table on which an OHP (projection) sheet 46 is placed is provided below the projector lens 47. (Projection unit) 44 is arranged.

As shown in FIG. 6, an OHP is provided on one side of the document table 44.
A 2-inch OHP sheet is placed to set the sheet 46. As shown in FIG. 7, the OHP sheet 46 has a bar code 4 indicating the order and classification of projections according to its contents.
6 is displayed. The OHP units 6 are separated and transported one by one by a transport roller 202. A barcode reader 2 is installed between the OHP tray 201 and the document table 44.
03 is installed, and the barcode 46' displayed on the OHP sheet 46 is read and output to the control device 91.

The gates 204 and 205 are arranged on the conveyance path of the OHP sheet 46 between the barcode reader 203 and the document table 44, and switch the conveyance direction of the sheet 46. gate 205
A buffer 211 for storing the OHP sheet 46 is located below the
~216 are deployed. In addition, each buffer 211 to 2
16 are each equipped with gates 206-210.

For example, when storing to the buffer 212, the gate 204
．． 207 to the position indicated by the dotted line, and gate 2
06.208.209.210 is moved to the position indicated by the solid line. When the OHP sheet 46 is stored in the buffer 212, it is stored in the RAM 90 (FIG. 5) of the control device 91.

Below the document table 44, as shown in FIG.
A mirror 45 that reflects light emitted from a projector light source 42 in the copying device 41 at right angles toward the document table 44 is rotatably mounted in the directions of arrows E and F. The projector light source 42 is arranged at a position where it is bent at a right angle by a mirror 45 with respect to the document table 44, and is always cooled by a fan 43 while the projector light source 42 is turned on. In FIG. 3, reference numeral 55 is an exposure table, and 84 is a Fresnel lens. The Fresnel lens 84 moves below the document table 44 during projection, and retreats in the direction when copying.

As shown in FIG. 4, the copying device 41 includes a document table 44,
The arm plate 83 is rotatably mounted on the document table 44, and the copy document 83 is placed on the document table 44.
A copy light source 48 movable in both A18 directions so as to scan and expose the HP sheet 46, and a plurality of folding mirrors 4
9, an exposure unit 50 consisting of a fixed folding mirror 51, and the scanner 4.
L E D to expose the image read in at 0 (Figure 1)
It has two exposure parts of 52.

The present copying device 41 uses a photosensitive recording medium 53, which is mainly made of a photocurable resin using a well-known photopolymerization initiator, as disclosed in, for example, Japanese Patent Application Laid-Open No. 62-143044. A photocurable resin that hardens when exposed to red, green, and blue wavelengths of light, and microcapsules that contain dye precursors for dyes such as magenta, magenta, and yellow.
It is applied onto a sheet that serves as a base material. The photosensitive recording medium 53 is housed in a cartridge 54 so as not to be exposed to light. The photosensitive recording medium 53 passes over an exposure stage 55 that exposes the photosensitive recording medium 53 from within the cartridge 54 to form a color latent image, and passes through the pressure developing device 5.
6. Pressure-developed photosensitive recording medium 53 and color developer sheet 60
The hook is passed through a separation roller 58 for separating the sheets and then to a take-up roller 59. The pressure developing device 56 is composed of a pair of pressure rollers 57 and the like that superpose the photosensitive recording medium 53 on which a latent image has been formed by exposure to light and the color developer sheet 60 and develop the image under pressure.

The developer sheet 60 is constructed by coating a base paper with a developer described in, for example, Japanese Patent Laid-Open No. 58-8739, and is placed in the cassette 61 so that the developer-applied surface faces upward. It is set. At the top of the cassette 61, a suction cup 62 for feeding the developer sheets 60 one by one is arranged.

The heat fixing device 70 includes a heat roller 71 having a built-in heater 75, an endless belt 74 installed between the heat roller 71 and the roller 72, which is used for coloring and glossing the developer sheet 60, and the developer sheet 60. It is comprised of a pressure roller 73 that applies a predetermined pressure to the heat roller 71 so that the colorant sheet 60 and the endless belt 74 are brought into close contact with each other. A paper discharge tray 76 is attached to the outside of the heat fixing device 70.

Next, the configuration of a control circuit for exposing data read by the scanner 40 to the LED 52 will be described with reference to FIG.

The control device 91 includes a central processing device 92 that processes various calculations.
(hereinafter referred to as a CPU), a read-only memory 93 (hereinafter referred to as a ROM) in which data used for calculations and control is stored in advance, and a random access memory 90 that temporarily records data resulting from calculations. (hereinafter referred to as RAM
), an input interface 94 that receives input signals from the scanner 40, panel switch 101, and barcode reader 203, and an output interface 95 that outputs output signals to the LED control circuit 102.

Further, a motor 104 for transporting the OHP sheet 46 and a solenoid 105 for driving the gate are connected to the output interface 95 via a drive circuit 103 . .

The operation of the image recording apparatus configured as above will be explained.

When used as an OHP (projector), as shown in FIG. 3, first, the image reflection mirror 38 is rotated in the direction of the arrow to raise it, and the telescopic stay 39 is pulled out to the fixed position. Next, the OHP sheet 46 is set on the OHP tray 201.

When a start switch (not shown) is pressed to operate the apparatus, the OHP sheets 46 are separated one by one by the transport roller 202 and transported to the document table 44.

During this transportation, the barcode reader 203 reads the exposure order, and at this time, for example, the OHP to be exposed first
Sheet 46. The OHP sheet 46 to be exposed third, as in the case where the OHP sort 46 to be exposed fourth is sent following the OHP note 46 to be exposed second.
is not fed and the control device 9■ determines that the fourth sheet 46 is not the OHP sheet scheduled to be exposed next.
The gate 204 is moved to the position indicated by the dotted line and the buffers 211~
The OHP sheet 46 in 216 is stored in the unstored buffer.

For example, when storing to the buffer 212, the gate 204
．． 207 to the position indicated by the dotted line, and gate 2
06.208.209.210 is moved to the position indicated by the solid line. Once stored in the buffer 212, this information is stored in the RAM 90 of the control device 91. After that,
When the OHP sheet 46 to be exposed third is sent, the gate 204 is moved to the position indicated by the solid line and the OHP sheet 46 is moved to the position shown by the solid line.
Leads to 4. When the exposure of the third OHP sheet 46 is completed, the fourth OHP sheet stored in the buffer 212 is
While transporting the P sheet 46 to the document table 44, the third OHP sheet 46 on the document table 44 is transferred to the paper ejection tray 2.
20.

Next, in FIG. 3, the mirror 45 is set at a predetermined position in the direction of arrow F, and the reflector plate 83 is retracted in the direction of arrow -. The light emitted from the projector light source 42 is reflected by a mirror 45, transmitted through an original platen 44 and an OHP sheet 46, condensed by a lens 47, reflected by an image reflection mirror 38, and projected onto a screen 36. be done.

When copying the OHP sheet 46 placed on the document table 44, the mirror 45 is rotated in the direction of arrow E, the reflector 83 is rotated in the direction of arrow J, and the OHP sheet 46 is rotated.
Press 6. Then, when the copy start button (not shown) is pressed, the copy light source 48 is activated as shown in FIG.
lights up, and the exposure unit 50 scans and exposes in the B direction.

The reflected light from the OHP sheet 46, which is the original, is reflected by the folding mirror 49, 51 and begins to expose the photosensitive recording medium 53. In synchronization with the scanning of the exposure unit 50, the photosensitive recording medium 53 is moved in the same direction. When the exposure for one screen is completed, the exposure unit 50 moves back in the direction of arrow A and returns to its original position. On the other hand, the photosensitive recording medium 53 after exposure has been completed.
This means that a latent image of the desired color image has been recorded.

The photosensitive recording medium 53 is conveyed by rollers 81 and 82 to the pressure roller 57 of the pressure developing device 56, and stops when the leading edge of the latent image reaches the pressure roller 57.

In synchronization with the movement of the photosensitive recording medium 53, the developer sheet 60 is fed out from the cassette 61 by a suction cup 62 until the tip of the developer sheet 60 corresponds to the tip of the latent image on the photosensitive recording medium 53. After being transported, it stops.

Next, the pressure roller 57 of the pressure developing device 56 is rotated in the direction of the arrow and pressed against the roller 57 by a well-known driving device (not shown). Then, the photosensitive recording medium 53 is conveyed while being pressed while being overlapped with the color developer sheet 60.
The uncured microcapsules on the photosensitive recording medium 53 are destroyed by pressure, and a color image corresponding to the latent image on the photosensitive recording medium 53 is developed on the color developer sheet 60.

The color developer sheet 60 is separated from the photosensitive recording medium 53 by the separation roller 58 and guided toward the heat fixing device 70 .

In the heat fixing device 70, the color developer sheet 60 is pressed against the endless belt 74 by a heat roller 71 and a pressure roller 73, and is brought into close contact with the heater 75.
is heated to accelerate the development of color images. At the same time, the binder polymer (binder resin) for fixing the color developing medium to the base paper of the color developer sheet 60 is thermally melted, and the surface becomes smooth and the surface of the color developer sheet 60 has an appropriate gloss. can get.

The color developer sheet 60 that has undergone coloring and gloss treatment is separated from the endless belt 74 by the curvature of the roller 72.
The paper is discharged to the paper discharge tray 76.

Further, when copying an image projected on the screen 36 or characters written on the screen 36, a scanner 40 provided on the right side of the front of the screen 36 is used.

If monochrome is acceptable, the screen 36 is scanned once in the direction of arrow G. The read data such as images and characters is temporarily stored on the RAM 90, which is input via the input interface 94 shown in FIG. The stored data is sent to the LED control circuit 102 via the output interface 95. The LED 52 corresponds to red, green, and blue wavelengths and exposes the photosensitive recording medium 53 according to the transmitted data to form a monochrome latent image.

If you want to output in full color, scan it through red, green, and blue filters, store the data corresponding to red, green, and blue on the RAM 90, and then
This is obtained by sequentially transmitting the data to the D control circuit 102.

If you want multiple copies, you can specify the number on the operation panel and get copies for the specified number of schools.

The means for recording the exposure order on the OHP sheet 46 does not have to be the bar code 46', but any means that can be converted into electrical symbols such as letters, symbols, and figures may be used. Furthermore, the data to be recorded may include not only the exposure order but also the exposure amount, exposure time, and the like.

Further, the light source for exposing the data read by the scanner 40 is not limited to the LED 52, but may be an LCD, a laser, or the like.

Furthermore, the image added on the screen 36 can be immediately OH
Copy it to the P sheet 46 and print it on the OHP sheet 46 on the spot.
It is also possible to create and project on the screen 36.

[Effects of the Invention] As is clear from the above detailed description, according to the projection apparatus of the present invention, the user can record on the projection sheet in advance without aligning the projection sheet with the projection section and then setting it. Projection is performed according to the exposure order indicated in a certain information display. This reduces the time required for the user to set up the
Further, it is possible to prevent the projection order from being changed due to a setting error, and it is easy to handle, and it is possible to perform error-free projection.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an OHP (projector) according to an embodiment of the present invention seen from the side, and FIG. 2 is a perspective view of the OHP shown in FIG. 1.
FIG. 3 is a schematic configuration diagram of the OHP shown in FIG. 1 seen from the side, FIG. 4 is a schematic configuration diagram of the OHP shown in FIG. 1 seen from the back, and FIG. 5 is a diagram of the present invention FIG. 6 is a block diagram showing the configuration of the control device of the present invention. FIG. 6 is a schematic diagram of the conveyance system for the P sheet of the present invention. FIG. 7 is a plan view showing an embodiment of the OHP sheet used in the OHP of the present invention. Fig. 8 is a schematic configuration diagram of an OHP sheet conveyance system in a conventional OHP. 36...Screen, 44... Original table (projection unit),
46...OHP sheet, 46°...barcode, 2
01...OHP) tray, 202...conveyance roller,
203... Barcode League, 204-210...
Gate, 211-216...Buffer, 220...
paper output tray

Claims (1)

[Scope of Claims] A projection device configured to project a projection sheet sent from a storage section for the projection sheet to a projection section onto a screen, etc., wherein information display such as a bar code is provided on the projection sheet, and the information display is A projection apparatus comprising: a reading means for reading; a buffer means for temporarily holding the projection sheet; and a control means for controlling conveyance of the projection sheet in accordance with the output of the reading means.