JPS63287941A - Projector - Google Patents

Abstract

PURPOSE:To simplify the constitution of a projector at a low cost by using a light output from a picture light emission source for the irradiation of screen and an exposure for photosensitive recording medium and correcting a luminance matched with the sensitivity of exposure at the time of exposing the recording medium. CONSTITUTION:At the time of using as a projector, a mirror 8 and a cover 10 respectively exist in positions A and C shown with a continuous line. The picture is displayed on a cathode-ray tube 6 with a picture signal from a driving circuit 4 and the light beam forms an image on a screen 9 through an image formation lens 7 and the mirror 8. When a hard copy is required, by depressing a switch 41 the picture signal is accumulated in a memory circuit 3 and the display on the cathode-ray tube is stopped, then the cover 10 and the mirror 8 are respectively moved in the positions D and B shown with alternate long and two short lines. The picture signal from a memory 3 is balanced in terms of color with the control signal from a luminance control circuit 5 in a driving circuit 4 and light emission is executed in the cathode-ray tube 6 so as to expose a microcapsule sheet 23 through the lens 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a projector capable of obtaining a copy of an image.

[Prior Art] Conventionally, (1) A cathode ray tube is built in, and a lens system exposes silver halide photographic paper to light. (2) There were video printers that digitized video signals and outputted them to color printers.

[Problems to be solved by the invention] However, in this conventional video printer,
Although it has the function of a printer, when viewing a television screen, an additional image output device such as a CRT is required.

[Object of the Invention] The present invention has been made in order to solve the above-mentioned problems, and provides a projector having a printer function and a projector function for outputting images, with an inexpensive and simple configuration. It is intended to.

[Means for Solving the Problem] In order to achieve this object, the projector of the present invention has two directions: the direction in which the light from the image generation source is projected onto the screen for viewing by the operator, and the direction in which the photosensitive recording medium is exposed. so that it changes to

Furthermore, it is equipped with a brightness control means, so that when an operator views the image, the brightness of each color constituting the primary colors of the image light emitting source is adjusted to the viewing sensitivity, and when a photosensitive recording medium is exposed, the brightness of each color is adjusted to photosensitive recording. Match the exposure sensitivity of the medium.

[Function] According to the invention having the above configuration, the light from the image light emitting source is imaged on the screen when viewed by the operator, and can be used as a projector.

When outputting an image, light is imaged onto a photosensitive recording medium and exposes the photosensitive recording medium.

At this time, the brightness of each color that makes up the primary colors is automatically changed and corrected to match the exposure sensitivity of the photosensitive recording medium, so the color balance of the image formed on the photosensitive recording medium will not be disrupted. .

[Example] An example embodying the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic configuration of a projector to which the present invention is applied.

The 10 dioctor 1 includes an input reproduction circuit 2 for inputting image signals, a memory circuit 3 for storing image signals, a drive circuit 4 for adjusting the output balance of each color signal constituting the three primary colors, and a drive circuit 4 for adjusting the output balance of each color signal constituting the three primary colors. The luminance control circuit 5 and the like constitute a luminance control means for changing the output balance of each color signal. It also has a pond circuit, but its explanation will be omitted this time.

Further, the cathode ray tube 6, which is an image light emitting source, is disposed facing downward, and an imaging lens 7 is disposed directly below it, facing the cathode ray tube 6, and further below, between the solid line position A and the chain-dashed line position B. A movable mirror 8 is provided.

Further, on the left side surface of the projector 1, a screen cover 10 is disposed that is movable between the screen 9 and the position C shown by the solid line and the position shown by the chain line that can cover the screen 9.

Further, a copying device 20 is arranged below the mirror 8,
In the copying machine 20, between a pair of paper feed rolls 21 and a take-up roll 22, there is a
A microcapsule sheet 23 known from Japanese Patent Application Laid-Open No. 58-88739 is provided. When the mirror 8 is located at the chain line position IB, the image displayed on the cathode ray tube 6 is formed by the lens 7 onto the microcapsule sheet 23 at the E position.

The color developer paper 24 is placed in a color developer sheet cassette 25, and the color developer paper 24 sent out by the color developer sheet feed roller 26 passes through the color developer sheet guide 27, and is overlapped with the microcapsule sheet 23. In this state, it passes through a pressure development device 28 and is subjected to pressure development. Thereafter, the developer paper 24 is separated from the microcapsule sheet 23 by a separation claw 29 disposed on the right side thereof, and then fixed by a thermal fixing device 30 and output. An unused microcapsule sheet 23 is stored in a microcapsule sheet cartridge 31.

Note that the microcapsule sheet 23 and the color developing paper 24 constitute the photosensitive and pressure sensitive recording medium of the present invention.

A working section 40 is arranged on the outside of the projector 1, and a hard copy switch 41 is arranged above it.

Next, the operation of this projector will be explained.

First, when using it as a projector, the mirror 8 is
The screen cover 10 is located at the solid line position A, and the screen cover 10 is located at the solid line position C. An image is displayed on the cathode ray tube 6 based on the image signal output from the drive circuit 4, and the light emitted from the cathode ray tube 6 and passed through the imaging lens 7 is reflected by the mirror 8 and focused on the screen 9. imaged. The operator can view the image output by looking at this screen 9.

Here, red (R) constitutes the primary color of the cathode ray tube 6.

The emission brightness of the three colors green (G) and blue (B) is set in the same way as the emission brightness of a normal cathode ray tube, and can be used as a normal projector.

Next, if you want to make a hard copy of an image, operate M
By pressing the hard copy switch 41 on 2O,
The image signal at that point in time is stored in the memory circuit 3, and the copying operation of that image is thereby started.

That is, first, the display on the cathode ray tube 6 is stopped, and then the screen cover 10 is moved from the solid line position C to the chain line position ID by a movable mechanism (not shown) to block external light. It is moved from the solid line position A to the chain line position B by movable v&lateral (not shown).

Next, the image signal stored in the memory is transferred to the drive circuit 4.
The signal is output to the cathode ray tube 6 and displayed as an image on the cathode ray tube 6.

At this time, the characteristics of the luminance of each of the three primary colors that make up the primary colors displayed on the cathode ray tube 6 are as shown in Figure 2: (1) The peak wavelength of the luminance is 450,550 for blue, green, and red, respectively. , 630 nm. Note that some cathode ray tubes have a red peak wavelength of 610 nm.

(2) Red emission band is narrow.

It has such characteristics.

The photosensitivity characteristics of the microcapsule sheet 23 are as shown in FIG. 3: (1) The peak wavelength of red is 650 nm.

(2) Red sensitivity is low.

It has such characteristics.

In this way, the light emission sensitivity of the cathode ray tube 6 and the light sensitivity of the microcapsule sheet 23 are different, and the microcapsule sheet 23 is exposed by setting the brightness of the three colors of blue, green, and red in the same way as when used as a projector. As a result, an image output with a color balance different from the color balance of the image viewed by the operator is obtained.

Therefore, when making a hard copy, the brightness control circuit 5 gives a control signal to the drive circuit 4 that balances the three colors of the output image, changes the gain of the drive circuit 4 for each color, and balances the colors. In this case, a signal is given to increase the luminance of red light. Similarly, a signal is given to slightly increase the luminance of blue light.

The amount by which the luminance is adjusted varies depending on the cathode ray tube and microcapsule sheet used.

Next, the cathode ray tube 6 is caused to emit light with the color balance as described above, and an image is output. The image emitted from the cathode ray tube 6 is focused onto the microcapsule sheet 23 at position E by the etymological lens 7, thereby exposing the microcapsule sheet 23 to light. After a suitable exposure time, the cathode ray tube 6 is turned off again.

Next, the exposed microcapsule sheet 23 is wound up by the take-up roll 22 and moved to the right. At the same time, the developer paper 24 in the developer sheet cassette 25
is fed into the color developer sheet guide 27 by the color developer sheet feed roller 26. Thereafter, the microcapsule sheet 23 is overlapped with the microcapsule sheet 23, and in this state, pressure development is performed in a pressure development device 28. The pressure-developed microcapsule sheet 23 and developer paper 24 are separated by a separating claw 29, and the microcapsule sheet 23 is wound onto a take-up roll 22. On the other hand, the developer paper 24 is inserted into the heat fixing device 30, where it is fixed and polished, and is outputted to the outside of the projector 1 as an output image.

After the image is output, the mirror 8 is moved to the solid line position A again.
Then, at the same time as the screen cover 10 moves from the M line position to the solid line position C, the brightness v1011 circuit 5 outputs a color balance control signal similar to a normal cathode ray tube output to the drive circuit n4 to 6 is displayed, and the input images and information are projected onto the screen 9 again. At this time, the screen cover 10 is located at the solid line position C, so that it can be used as a normal projector again.

The present invention is not limited to the embodiments detailed above, and various changes can be made without departing from the spirit thereof.

In this embodiment, a switching mirror is used to switch the optical path between the screen and the photosensitive recording medium, but a half mirror is used as the mirror, and a shutter is installed on the 5-optical recording medium side.
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[Effects of the Invention] As is clear from the detailed description above, according to the present invention,
Hard copies of images can be made at low cost and with a simple configuration.

In particular, in this embodiment, since the luminescence intensity of each color constituting the primary colors is matched to the exposure sensitivity of the flash recording medium, exposure can be performed without any time loss, and a hard copy can be quickly output.

[Brief explanation of the drawing]

1 to 3 show embodiments embodying the present invention. FIG. 1 is a cross-sectional view of a projector, FIG. 2 is a diagram showing the phosphor emission characteristics of a cathode ray tube, and FIG. 1 is a diagram showing the exposure sensitivity of an angry light recording medium. In the figure, 1 is a projector, 6 is a cathode ray tube, 8 is a mirror, 9 is a screen, and 23 is a microcapsule sheet. Patent Applicant Katsuji Kawashiro, President and Director of Brother Industries, Ltd. Figure 1 Figure 2 Figure 3

Claims (2)

[Claims] (1) In a projector equipped with a printer that can output images using a photosensitive recording medium, the light output of an image emitting source such as a cathode ray tube is used both for illuminating the screen and for exposing the photosensitive recording medium. A projector characterized by comprising: (2) A patent claim characterized in that, in the projector, the brightness of each color constituting the primary colors is changed during screen irradiation or exposure to a photosensitive recording medium so as to match the viewing sensitivity or the sensitivity of the photosensitive recording medium, respectively. The projector according to item 1.