JPH0711063Y2 - Reader - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading device such as a facsimile and, more particularly, to a reading device that facilitates treatment when a paper jam occurs.

2. Description of the Related Art An image transmitting / receiving device such as a facsimile is equipped with a reading device using an image sensor. In this type of reading device, a reading roller is rotatably provided so as to face the image sensor and sandwich a sheet passage path, and the sheet is conveyed while being pressed against the image sensor by the reading roller. In such a device, since the reading roller is in contact with and fixed to the image sensor at one point, when the paper is jammed (jammed) between the image sensor and the reading roller,
It was very difficult to pull out the paper.

Therefore, in the conventional reading device, the reading roller is fixed to the upper lid, and the reading roller is separated from the image sensor by raising the upper lid.

FIG. 3 is a side view showing a schematic configuration of such a conventional reader. In the figure, 1 is an image sensor for reading an image, 2 is a rotatable reading roller, and the image sensor 1
The reading roller 2 and the reading roller 2 are installed to face each other with a paper passage path AB indicated by a chain line therebetween, and the image sensor 1 is pivotally supported by a fixed pin 11 and is biased by a spring or the like (not shown). The force F generated by the means constantly presses the peripheral surface of the reading roller 2.

Reference numeral 3 denotes an upper lid provided so as to cover the paper passage path AB, the reading roller 2 is supported by the upper lid 3, and the reading roller 2 is separated from the image sensor 1 by lifting the upper lid 3. In the figure, 12, 13 and 14 are paper guides provided to guide the passage of paper.

In the reading device thus configured, when the paper is jammed (jammed) between the image sensor 1 and the reading roller 2, the upper lid 3 is lifted to separate the reading roller 2 from the image sensor 1, and the paper is pulled out. .

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-described conventional reading device, when the paper is jammed, the upper lid is lifted and the reading roller is separated from the image sensor to remove the jammed paper. However, with this method, the movement path of the reading roller must be secured, which leads to an increase in the size of the apparatus. Further, since the reading roller is fixed to the upper lid, it is not preferable in appearance.

In view of such problems of the conventional reading device, the present invention provides
An object of the present invention is to provide a device in which the image sensor is slightly separated from the reading roller in synchronism with the raising of the upper lid, and the paper can be easily removed when the paper is jammed.

Means for Solving the Problems In order to solve the above problems, a reading roller that conveys an original, an image sensor that presses the reading roller to read the original, and an image sensor that is provided on the reading roller side and that detects the original An opening / closing part that holds a guide for guiding the image sensor and means for separating the image sensor from the reading roller in the direction opposite to the moving direction of the guide by the opening operation of the opening / closing part.

Operation In the reading device of the present invention configured as described above,
When the upper lid is lifted when the paper is jammed, the first lever, which is integrated with the upper lid, swings upward, the second lever is pulled up accordingly, and the third lever swings to become integral with this. The image sensor is separated from the reading roller, and the jammed paper can be easily removed. After the paper removing operation, if the upper lid is lowered to the original position, the image sensor is returned to the normal operation position where it comes into contact with the peripheral surface of the reading roller by the operation reverse to the above.

Embodiment Hereinafter, the configuration of the present invention will be described in more detail with reference to an embodiment shown in the drawings.

1 and 2 are side views showing the construction of an embodiment of the reading device of the present invention. In the figure, members that are the same as or correspond to those in FIG. 3 described above regarding the conventional example are denoted by the same reference numerals, and redundant description will be omitted.

In the illustrated apparatus of the present invention, the path AB through which the paper passes
Although the image sensor 1 and the reading roller 2 are arranged so as to face each other across the same as in the conventional example described above, in the present invention, the upper lid 3 is fixed to the tip portion of the first lever 4. . The reading roller 2 is not fixed to the upper lid 3 unlike the conventional example, but is installed independently of the upper lid 3. The first lever 4 has a base end portion which is a first end.
The fixed pin 5 is swingably supported, and one end of the second lever 6 is supported by the pin 6a at an intermediate portion thereof.

An elongated hole extending in the longitudinal direction of the second lever 6 is formed in the middle portion of the second lever 6.
6b is provided, the long hole 6b is fitted in the second fixing pin 7, and the second lever 6 can slide on the second fixing pin 7 and move in the longitudinal direction. A sliding contact pin 6c is provided upright on the other end of the second lever 6.

The image sensor 1 is fixed to a third lever 8. The third lever 8 is pivotally supported by a third fixing pin 9, and the image sensor 1 is normally pressed against the reading roller 2 by the force F. Paper (state shown in FIG. 2), and the paper passes through the path AB. The sliding contact pin 6c of the second lever 6 is arranged at a position facing one side (left side in the drawing) of the lower portion of the third lever 8.

In the reading device configured as described above, the operation for removing the paper when the paper is jammed is performed as follows.
That is, when the upper lid 3 is first lifted as shown in FIG. 1, the upper lid 3 swings together with the first lever 4 about the first fixing pin 5 as shown by an arrow in the figure. Along with this swing, the second lever 6 connected by the pin 6a slides on the second fixing pin 7 through the elongated hole 6b and is pulled up as shown by the arrow in the figure. As described above, at the same time when the second lever 6 moves upward, the sliding contact pin 6c at the lower end of the second lever 6 slides in contact with the left side of the third lever 8 and moves, so that the third lever 8 moves toward the third fixing pin 9. The image sensor 1 integrated with the third lever 8 is oscillated around the center as shown by an arrow in the figure, and is separated from the reading roller 2 against the force F.
-Can be easily removed from between the reading rollers 2. A concave portion 6d is provided on the right side of the elongated hole 6b of the second lever 6, and when the separating operation of the image sensor 1 is performed as described above, the concave portion 6d is fitted to the fixing pin 7, The force F acting on the sensor 1 is used for locking. To return the reading device to the normal operation position, the upper lid 3 is pushed down to release the lock, and the image sensor 1 returns in the reverse order to contact the reading roller 2.

EFFECTS OF THE INVENTION As is clear from the above description, according to the reading device of the present invention, the image sensor is separated from the reading roller in synchronization with the opening of the upper lid, and the jammed paper can be easily removed. Since the separation of the image sensor is performed by the swing of the lever, the moving distance thereof is short, and the device can be accommodated in a small size.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 are side views showing an embodiment of the reading device of the present invention, and FIG.
FIG. 2 shows a state during a normal reading operation, and FIG. 3 is a side view showing an example of a conventional reading device. 1 ... Image sensor, 2 ... Reading roller, 3 ... Top cover, 4 ... First lever, 5 ... First fixing pin, 6 ... Second lever, 6a ... Pin, 6b ... Long hole, 6c …… Sliding contact pin,
7-second fixing pin, 8-third lever, 9-third fixing pin.

Claims (1)

[Scope of utility model registration request] 1. A reading roller that conveys a document, an image sensor that presses the reading roller to read the document, and an opening / closing section that holds a guide that is provided on the reading roller side and guides the document to the image sensor. A reading device including means for separating the image sensor from the reading roller in a direction opposite to the moving direction of the guide by the opening operation of the opening / closing section.