JPH0414352B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winding-type copying machine, etc., which is equipped with a mechanism for winding up a document holding sheet and a cover of a copying machine, a microfilm photographing machine, etc., and is capable of moving the mechanism. This invention relates to a cover device.

Conventionally, the document holding lid of a copying machine, etc. has a rear end such as a resin plate that is rotatably supported by a hinge.
The front side can be opened and closed by rotating it up and down by hand.

Therefore, the wind generated when opening and closing the document holding lid may cause the document to shift, the document may stick to the lid due to friction, or the opening/closing angle at the hinge portion may be within a predetermined range when the lid is opened or closed. If the lid returned and you got your hand caught, or if you lifted it beyond a certain range, it would open all at once, making it troublesome to hold down the document.

In addition, some small-sized copying machines have a document table that moves from side to side, but in the case of thick documents, the document must be held down by hand, which is cumbersome to handle, and it is difficult to copy thick documents. In some cases, the lid could not completely block out light, and there were drawbacks such as black lines appearing on the copy area, making it impossible to make clear copies.

The present invention has been made in order to solve the above-mentioned conventional drawbacks, and the drawer tip of the cover is locked to one end of a table having a document placement surface, and the cover is rolled up and stored. In a take-up type cover device such as a copying machine that covers a document on a document placement surface with a cover that is drawn out by running a take-up body, the take-up body is attached to a guide member attached to a placing table. It has a mechanism that moves along the winding body and moves up and down, and a cover holding member that is pressed in the direction of the document placement surface is attached to the cover feeding opening side of the winding main body. The device is characterized in that a guide portion is attached to the moving direction side of the collecting body, which contacts the document and moves a mechanism that moves up and down in accordance with the thickness of the document.

The present invention will be explained in detail below.

First, the principle of the present invention will be explained based on FIGS. 1 to 4. In the figure, reference numeral 1 denotes a document loading table of a copying machine, 2 a winder which is urged to rotate in the winding direction by an elastic body, and 3 a document holding sheet wound around the winder 2. As shown in FIG.

A frame 3a is fixed to the drawing end of the document holding sheet 3, and this frame 3a is fixed to the document table 1.

Further, a sheet pressing plate 5 for guiding the feeding and winding of the original holding sheet 3 is attached to the feeding opening of the winding machine 2 via a sheet holding spring 6 in the form of a plate spring.
is brought into close contact with the upper surface of the original platen 1.

Then, by manually running the winder 2, the original holding sheet 3 is pulled out. At the end of its travel, the winder 2 engages with and is fixed to a hook 7 fixed to the document platform 1, and the document P is pressed against the upper surface of the document platform 1 by the presser sheet 3.

In this way, the present invention runs the winder 2 to feed out the presser sheet 3, so that the presser sheet 3 is
Since a new sheet surface is fed out so as to be placed on top of the original P without moving while rubbing the top, there is no misalignment or smearing of the original P unlike in the prior art described above.

Next, specific examples of the present invention will be shown.

In FIGS. 5 to 7, the tip of the drawer of the document holding sheet 3 is fixed to the document table 1 side, and the take-up machine 2
2 shows the internal mechanism of the winder 2 that automatically moves the winder 2.

FIG. 5 is a sectional view of the winder 2, in which the document holding sheet 3 is wound around a hollow pipe 10 with one end fixed to the same. A bushing A11 and a bushing B12 are fixed to both ends of the hollow pipe 10. Inside the hollow pipe 10, a shaft 14 is installed, one end of which is rotatably supported by a bearing 13 provided on the bushing A11 side, and the other end of which passes through the bushing B12. Located between 10 and
An elastic body 15 such as a coil spring is attached to the shaft 14.
is inserted, and one end of this elastic body 15 is connected to the shaft 1.
4, and the other end is fixed to bush B12.

The shaft 14 is rotatable relative to the bush B12. In addition, the above bush A11
is rotatably supported by a bearing A17 to which the cover 16 of the winder 2 is fixed, and the bush B12
A shaft 14 passing through is fixed to the bearing B18 via a fixing screw 19. Furthermore, the above bearing B
A rolling roller 20 is installed at 18 , and a main body support section 21 is installed at the other end of the cover 16 located on the opposite side of this rolling roller 20 . The fixing screw 19 is attached to the hollow pipe 1 in order to apply initial tension to the elastic body 15 that urges the hollow pipe 10.
It is also used when setting the shaft 14 after rotating the shaft 14 with 0 fixed.

Main body support part 2 installed at the end of the winder 2
1 is provided with a guide hole 21a, into which a guide rail 22 fixedly installed on the document table 1 is inserted (see FIGS. 6 and 7).

Therefore, the winding machine 2 can run along the guide rail 22.

Further, a bracket is integrally provided on the main body support portion 21, and a prime mover 23 such as a motor is installed. A wire 25 stretched across the front and back of the original platen 1 is wound around the pulley 24 of the prime mover 23, and as shown in FIGS.
5, so that the winder 2 can be moved back and forth along the guide rail 22.

Here, a sheet presser plate 5 is attached to the feed-out opening of the document presser sheet 3 of the winder 2 via a sheet presser spring 6, and presses the document presser sheet 3 against the upper surface of the document table 1. Therefore, even if the thickness of the document changes, it can be held down without lifting up.

Figures 7 and 8 a, b, and Figure 9 a, b
2 shows another drive method of the winder 2, in which the prime mover 2 is mounted on the main body support part 21 installed at the end of the winder 2 on the cover side.
3 may be built-in (FIGS. 7 and 8), or it may be moved not only by pulleys and wires but also by gears 26 and racks 27 (FIG. 9).

FIG. 10 is an explanatory diagram when the prime mover that drives the take-up machine 2 is installed on the side of the original platen 1, away from the take-up machine 2. , the wire 28 is wound around the wire 28, and both ends are passed through the idler 29 to the winding machine 2.
By connecting it to the main body support portion 21 of
The main body support part 21 moves while being fed out.

In the above configuration, it is possible to use the drive of the prime mover 23 of the winder main body and the power source of the light source in combination, and in order to synchronize with the light source, the moving speed of the winder main body must be adjusted to the moving speed of the light source. It is sufficient to synchronize them, and this can be done by calculating and adjusting the diameter of the pulley driven by the prime mover in advance.

Further, the drawer end of the document holding sheet 3 may be hooked onto the document table 1 side, or may be completely fixed with screws or the like.

As described above, the present invention is implemented by locking the drawer end of the sheet (cover) 3 on the placing table having the original placing surface on the upper surface and running the winding machine 2 that winds up and stores the sheet 3. This is a winding-type cover device for a copying machine, etc., which covers a document on a document placement surface with a sheet 3 that is fed out by a winder. It is constructed by attaching a guide part that operates a mechanism that moves up and down.

Next, a mechanism for moving the winding machine 2 up and down will be explained. The mechanism operates when the guide comes into contact with the document.

Figures 11a, b, and c and Figures 12a, b, and c show a first embodiment of a mechanism for moving up and down according to the present invention. separated, link arm 30,
31, the winder 2 is connected to the winder 2 so as to be able to move up and down.
A guide plate 33 supported by is installed. Therefore, when the guide plate 33 comes into contact with the thick original P, as shown in FIGS.
is lifted up.

In this case, the angle θ of the guide plate 33 is
In order to prevent the document from shifting when it comes into contact with the document P, it is set as small as possible so that it is easy to ride on the document P.

13a, b, c and 14a, b, c show a second embodiment of the mechanism for vertically moving up and down according to the present invention. In the figures, the main body support part 21 of the winder 2 is separated into a slide part 21a. The main body support part 21 is lifted by a slide 36 having a female screw engaged with a slide shaft 35 having a male screw when a slide motor 34 is operated. A guide plate 3 supported by an elastic body 32 on the traveling direction side.
It is activated by a sensor installed in 3.

The sensor installed on the guide plate 33 may be a limit switch, and the same operation can be obtained by using a worm gear or the like for the threaded portion. Note that 3 in the figure
7 is a slide guide.

As explained in detail above, the roll-up cover device for copying machines, etc. according to the present invention has a simple structure, is easy to handle, and can hold the document securely and in accordance with the thickness. By moving the take-up main body, the document holding sheet (cover) is placed on top of the document and is fed out, so that the movement of the holding sheet (cover) and the movement of the document caused by the wind that occurs during this movement prevents the document from shifting or being pecked. It will be resolved.

Further, the document holding sheet side can be fixed and the winder side can be automatically run, and the winder main body and the light source can be driven in synchronization.

[Brief explanation of drawings]

FIGS. 1 to 4 are diagrams explaining the principle of the present invention, and FIG.
The figure is a cross-sectional view showing the structure of a winder according to the present invention, FIGS. 6 and 7 are explanatory diagrams showing a drive system of a winder-type cover device equipped with the winder, and FIGS. 8a and b
9 to 9 a, b are explanatory diagrams of other drive systems according to the present invention, FIG. 10 is an explanatory diagram of still another drive system according to the present invention, FIGS. 11 a, b, c, and 12 a, b , c are explanatory diagrams showing a mechanism for raising and lowering the winding machine according to the present invention, and FIGS. 13 a, b, and c and FIGS. It is an explanatory view showing a mechanism for raising and lowering the . 1... Document loading table, 2... Winding machine (winding body),
3... Document holding sheet (cover), 5... Sheet holding plate (cover holding member), 6... Sheet holding spring, 20... Rolling roller, 21... Body support part, 21a... Guide hole, 22 ... Guide rail, 23 ... Prime mover, 24 ... Pulley, 25 ...
wire.

Claims (1)

[Scope of Claims] 1. The drawer tip of the cover is locked to one end of a placing table having a document placing surface, and the cover is paid out by running a winding body that winds up and stores the cover. In a roll-up cover device for a copying machine or the like that covers a document on a document placement surface with a cover, the take-up body has a mechanism that moves along a guide member attached to the placement table and moves up and down. A cover holding member is attached to the cover feeding port side of the winding main body and is biased in the direction of the document placement surface, and a cover holding member is attached to the moving direction side of the winding main body and comes into contact with the document, A roll-up cover device for a copying machine or the like, characterized in that a guide section is attached to move a mechanism that moves up and down in accordance with the thickness of the document.