JPH04232799A - Display unit - Google Patents

Abstract

PURPOSE:To eliminate the influence of print speed on the display speed in a display unit where an image is printed on a display sheet through a display unit. CONSTITUTION:A sheet carrying path for guiding and carrying a display sheet 4 is provided between a belt 30 for carrying the display sheet 4 at the display section in a display unit and a printer 8 for forming an image on the display sheet 4. Furthermore, a sheet carrying path shutter 17 for opening the sheet carrying path in the way is provided and a sheet containing chamber 23 is disposed at the opening of the sheet carrying path shutter 17. Printed display sheets 4 corresponding to single screen are stored in the sheet containing chamber 23 and then they are displayed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device that forms an image on a display sheet and moves the display sheet to display the image, and is particularly suitable for displaying color images.

0002

2. Description of the Related Art Conventionally, as a display device using a display sheet, a device in which an electrostatic toner image is formed into a belt-like endless sheet and displayed is known. Rather than displaying an image drawn on such an endless sheet, the present invention forms an image on an edged sheet such as a rolled display sheet or a strip of display sheet using a printer such as an inkjet printer. This is a display device that displays a display sheet by conveying it from the back while pressing it against a transparent plate such as a glass plate using a belt.

0003

SUMMARY OF THE INVENTION Such display devices, particularly those displaying color images, have a slow image printing speed, which limits the image display speed. This has become more noticeable as display devices have become larger.

0004

[Means for Solving the Problems] In view of the above problems, the present invention prints an image on a display sheet, and displays the display sheet by conveying it from the back while pressing it against a transparent plate such as a glass plate. In this display device, a sheet conveyance path between a printer and a belt is provided with a sheet storage and a sheet conveyance path shutter that opens to the sheet storage.

[0005]

[Operation] According to this, once the printed display sheet is stored in the sheet storage, one screen can be quickly displayed.

[0006]

[Embodiment] An embodiment of the present invention will be explained with reference to the drawings. Figure 1
2 is an enlarged side sectional view of the paper conveyance mechanism in the display device during paper feeding, FIG. 2 is an enlarged side sectional view of the paper conveyance mechanism in the display device during printing, and FIG. 4 is an enlarged side sectional view of the paper conveyance mechanism in the display device during printing. FIG. 6 is an enlarged side sectional view of the paper conveyance mechanism in the display device during paper conveyance.

The display device 1 is composed of a printer section 2 and a display section 3. The printer unit 2 includes a roll of paper 4, a paper feed roller 5 and a roller 6 that feed the paper 4, a cutter 7, and an inkjet printer 8 that prints color images. There is. Note that although paper is used as an example of the display sheet, it may also be a film, cloth, or the like, and its shape may also be one cut into strips. Further, the printer is not limited to the inkjet type.

The paper feed roller 5 is rotated by a motor 9,
The roller 6 is rotatably supported by an opening/closing lever 10, and when the opening/closing lever 10 is closed, the roller 6 comes into contact with the paper feed roller 5, and a microswitch 11 is activated.

Color image data sent to the printer 8 is sent from an external computer (not shown).

Roller 12, roller 13, roller 14, roller 15, paper guide plate 16, paper conveyance path shutter 17, roller 1
A paper conveyance path to the display section 3 is formed by the paper guide plates 19a, 19b and the paper guide plates 19a, 19b.

A paper sensor 20 is provided in front of the roller 12 and the roller 13. The roller 12 is driven by a motor 21, and the roller 14 is driven by a motor (not shown). Further, the paper conveyance path shutter 17 is opened by a motor 22 and communicates with a paper storage 22 provided below the paper conveyance path shutter.

Among the rollers 18a and 18b, the upper roller 18a is driven by a motor 24, and the lower roller 18
b is rotatably attached to a swinging rod 25, and the swinging rod 25 swings about a shaft 26 when a solenoid 27 is actuated to move toward and away from the upper roller 18a. A paper sensor 28 is provided in front of the rollers 18a, 18b.

The display section 3 includes a large glass plate 29.
It has an A0 size display area of 1188 mm in length and 840 mm in width, and is provided above the printer section 2. Further, a belt support roller 31 for stretching a belt 30 along the glass plate 29, a belt drive roller 32, a roller 33 paired with the belt drive roller 32, and a paper sensor 34 are provided. This belt 30 is a flexible sheet whose surface is covered with a rubber material.

The belt drive roller 32 is driven by a belt drive motor 35 through a plurality of gear groups, thereby moving the belt 23 along the glass surface from bottom to top (in the direction of arrow A in FIG. 2).

On the back side of the display section 3, there is a first winding roller 36 for winding up the paper after displaying, and a second winding roller 36 for rewinding the paper 4 that has been wound up by the first winding roller 36. A roller 37 is provided.

Next, the operation of the embodiment of the present invention will be explained step by step. First, when the leading edge of the paper roll 4 is carried between the paper feed roller 5 and the roller 6 and the opening/closing lever 10 is closed, the microswitch 11 is turned on. . Then, the motor 9 starts, the paper feed roller 5 rotates, and the paper 4 is automatically fed.

At this time, as shown in FIG.
and the roller 18b are in contact with each other, and the paper conveyance path shutter 17 is closed. Therefore, the paper 4 is
, roller 14, roller 15, paper conveyance path shutter 17
It is guided by the rollers 18a and 18b and is conveyed toward the display section 3.

The paper 4 that has been carried to the belt 30 and roller 33 is conveyed along the glass plate 29 as the belt 30 moves, and is wound around the first winding roller 36 at the rear of the display device 1 .

At this point, the display device 1 is in a state where it can display an image, and image formation and display are executed in response to signals from an external computer (not shown).

According to the image print start signal from the computer, the roller 18a and the belt 30 stop, and the paper conveyance path shutter 17 becomes open. On the other hand, since printing of images has started, the sheets of paper 4 are being conveyed one after another. Therefore, the paper 4 whose advance is stopped by the rollers 18a and 18b is stored in the paper storage 22 as shown in FIG.

When an image of equal size is printed on the display surface of the display device, the solenoid 27 is turned off and the rollers 18a and 18b are separated, as shown in FIG. At the same time, the belt 30 starts rotating again, so the paper 4 is conveyed, and one screen worth of images stored in the paper storage is displayed.

[0022] In this embodiment, since one screen can be displayed at a time, it is much easier to see than when the image is displayed according to the print speed, and while the displayed image is being viewed, the next image can be printed. As a result, it does not make you feel that it takes a long time to print, and as a result, it feels like it is being displayed quickly. A pair of rollers 1 is placed in front of the belt 30.
8a and 18b are provided, and since the paper is stopped by these, paper jams on the paper guide plates 19a and 19b can be prevented.

In this embodiment, a pair of rollers 18a and 18b are provided to prevent paper from jamming in the paper guide plates 19a and 19b when paper conveyance by the belt 30 is stopped. If so, even if the belt 30 is stopped, the paper will be stored in the paper storage 22 without jamming, so the rollers 18a and 18b will not be necessary.

[0024]

[Effects of the Invention] According to the present invention, once the printed display sheet is stored in the sheet storage, one screen can be quickly displayed, making it much easier to see than displaying according to the printing speed. Since the next image is printed while the displayed image is being viewed, the user does not feel the printing time, and as a result, the image appears to be displayed quickly.

[Brief explanation of the drawing]

[Fig. 1] Enlarged side sectional view of the paper transport mechanism in the display device during paper feeding

[Figure 2] Side sectional view of the display device

[Figure 3] Side enlarged sectional view of the paper transport mechanism in the display device during printing

[Fig. 4] An enlarged side sectional view of the paper transport mechanism in the display device during paper transport for display.

[Explanation of symbols] 1. Display device 4. Paper 8 Printer 16 Paper information board 17 Paper conveyance path shutter 18a, 18b Roller 29 Glass plate 30 Belt

Claims (3)

[Claims] Claim 1: A continuous long display sheet, a printer that forms an image on the display sheet, a transparent plate installed above the printer, and a display sheet stretched parallel to and in contact with the transparent plate. The printer is equipped with a conveyor belt, and a sheet conveyance path that guides and conveys sheets from the printer to the conveyor belt.
In a display device that displays images by rotating a conveyor belt and moving a display sheet along a transparent plate, there is a sheet conveyance path shutter that opens midway through the sheet conveyance path, and a sheet storage device in the open position of the sheet conveyance path shutter. A display device characterized by having a storage. 2. A continuous long display sheet, a printer for forming an image on the display sheet, a transparent plate installed above the printer, and a display sheet stretched parallel to and in contact with the transparent plate. The printer is equipped with a conveyor belt, and a sheet conveyance path that guides and conveys sheets from the printer to the conveyor belt.
In a display device that displays images by rotating a conveyor belt and moving a display sheet along a transparent plate, there is a sheet conveyance path shutter that opens midway through the sheet conveyance path, and a sheet storage device in the open position of the sheet conveyance path shutter. A display device comprising: a storage; and a sheet conveyance stop member behind a sheet conveyance path shutter in a sheet conveyance direction. 3. The display device of claim 2, wherein the sheet stopping member of claim 2 is a pair of rollers.