JP2559444Y2 - Document reading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a document reading device that sets a document at a predetermined position and reads the document in a facsimile machine, a copying machine, or the like.

SUMMARY OF THE INVENTION The present invention relates to a document reading device for setting a document at a right angle to a document conveying roller and reading the document in a facsimile machine, a copying machine, and the like, and in particular, an opening in an upper case of the document reading device. When a pair of pressure rollers are provided, a pair of transport rollers are provided in the opening of the lower case, and when the upper case is overlaid on the lower case, the pressure roller and the transport rollers transfer the document between the transport rollers. While holding the document, the document positioning member is released to the outside of the document conveyance path by the document positioning member release mechanism, and the document is conveyed by the pressure roller and the conveyance roller to the document reading section arranged between the pair of pressure rollers to read the document. In addition to simplifying and reducing the size of the document reading device,
The document can be transported reliably and can be used without difficulty in a portable facsimile machine or the like.

2. Description of the Related Art In general, a facsimile apparatus reads an item described in the document by a document reading unit while sending the document for transmission to a document reading unit by a conveyance roller, and then transmits the read item by a transmission unit. It is supposed to.

In the facsimile apparatus described above, the original must be sent straight to the reading unit by the transport roller, and for this purpose, the original must be set at a right angle to the transport roller.

The document reading apparatus reads the document by setting the document at a right angle to the document transport roller in the facsimile apparatus as described above.

As a conventional document reading apparatus of this type, a pair of width guides 104 and 105 are mounted on both sides in the width direction of a tray (document receiver) 103 which is mounted facing a paper insertion slot 102 of a facsimile apparatus 101 as shown in FIG. A document in which the width guides 104 and 105 press both sides of the document 106 so that the document 106 is set at right angles to a transport roller (not shown) in the facsimile apparatus 101 is widely used.

[Problem to be Solved by the Invention] The above-described conventional document reading apparatus is configured by attaching a pair of width guides 104 and 105 on both sides of a tray 103, and faces the paper insertion opening 102 of the facsimile apparatus 101. However, the following problems have been encountered because of the use of such a device.

(1) In order to accommodate the document 106, the tray 103 must be at least larger than the size of the document 106, so that the document reading device also becomes large.

(2) Since it is so-called externally attached to the facsimile apparatus 101 or the like, an installation space for the document reading apparatus must be secured.

(3) The width guides 104 and 105 need to be movable in order to correspond to the originals 106 having different widths, which complicates the structure.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has as its object to provide a document reading apparatus which can be reduced in size with a simple structure and can be incorporated in a facsimile apparatus.

Means for Solving the Problems A document reading apparatus according to the present invention has a lower case having an opening on the upper side, a rotatable and detachably attached to the lower case, and an opening on the lower side. The upper case, a pair of pressure rollers mounted substantially parallel to the opening of the upper case, and between the pair of pressure rollers, the opening of the upper case and the reading unit are mounted substantially parallel. Document reading section, and substantially parallel to the opening of the lower case,
When the opening of the upper case and the opening of the lower case are opposed to each other, a pair of transport rollers attached to a position facing the pair of pressure rollers, and between the pair of transport rollers. A document positioning member attached substantially parallel to the pair of conveyance rollers, and configured to abut a leading end of a document conveyed to a document conveyance path defined by a gap between the lower case and the upper case; and an opening of the upper case. A document positioning member release mechanism that releases the document positioning member from the document conveyance path when the opening and the opening of the lower case face each other.

[Operation] When the leading edge of the document is pressed against the paper positioning member, the document is set at a right angle to the transport roller. When the upper case is overlaid on the lower case after the document is set on the transport roller at a right angle in this way, the pressing roller and the transport roller are opposed to each other, and the document is sandwiched between the rollers, and the document positioning member is disposed. Since the document is released from the document conveyance path by the document positioning member release mechanism, the document is conveyed straight toward the front document reading section by rotating the conveyance roller.

Embodiment Next, the present invention will be described with reference to FIGS. Reference numeral 1 denotes a document reading apparatus 1 of the present invention used for a facsimile apparatus. The document reading apparatus 1 has a lower case 2 having an opening on the upper side, and is rotatably and detachably attached to the lower case 2. And an upper case 3 having an opening on the lower side. When the upper case 3 is overlaid on the lower case 2 and a so-called lid is closed, the upper case 3 is located between the lower case 2 and the upper case 3. An appropriate gap is generated, and the gap becomes the document conveying path 4,
A document 6 inserted from a document insertion port 5 at one end of the conveyance path 4 is conveyed by a conveyance roller described below and sent out from a document outlet 7 at the other end of the document conveyance path 4.

At the ends of the lower case 2 on the side of the document insertion port 5 and the side of the document feed port 7, a pair of conveying rollers 8, 9 are arranged in parallel with the opening, and these conveying rollers 8, 9 are not shown. The motor is rotated by a roller drive mechanism including a motor and a gear train.

Further, a pair of pressure rollers 10 and 11 are attached at the ends of the upper case 3 on the document insertion port 5 side and the document feed port 7 side and opposite to the transport rollers 8 and 9. When the lids are closed, the rollers 10 and 11 are pressed against the transport rollers 8 and 9, respectively, to press the original 6 against the transport rollers 8 and 9.

A document reading unit 12 is provided between the pressure rollers 10 and 11 in the upper case 3.

The document reading unit 12 is of a known solid-state scanning type, and includes a lamp for projecting light on the document 6, a contact type IC image sensor for forming an image of the document 6 via a light guide system, and a conveyance speed of the document 6. An encoder or the like for generating a corresponding reading synchronization signal is provided, and the surface of the document 6 is scanned to read the image information.

A document positioning member 22 disposed in the lower case 2 in parallel with the document conveying rollers 9 and 10 on the document conveying path 4 to abut the leading end of the document 6 to be conveyed;
A document positioning member release mechanism 23 is provided to release the document positioning member from the document conveying path 4 when the document is transported.

The document positioning member 22 is arranged near and parallel to the conveyance roller 8 on the document insertion port 5 side.

The document positioning member release mechanism 23 is disposed below the document conveyance path 4, has the document positioning member 22 at one end, and is rotatably attached to the lower case 2 by a shaft 24 at the other end. A pair of left and right rotating arms 25, and a rotating force applied to the rotating arm 25, and the document positioning member
A spring member 26 that raises 22 from below the document transport path 4 to a position blocking the document transport path 4 and a central part of the rotating arm 25 that closes the upper case 3 At this time, the document is pressed by the pressing portion 28 provided in the upper case 3 to rotate the rotating arm 25 against the spring force of the spring member 26, thereby moving the document positioning member 22 to the document conveying path 4 And the pressed part 27 which escapes downward.

Reference numeral 29 denotes a size display section provided near the document insertion opening of the lower case 2 for positioning in the width direction according to the size of the document 6.

Note that a transmission unit (not shown) for transmitting information read by the document reading unit 16 through an acoustic coupler or a telephone network is provided in the lower case 2.

The upper case 3 is detachable from the lower case 2 so that the upper case 3 can be detached from the lower case 2 to perform a so-called hand scan.

Since the embodiment has the configuration as described above, the upper case 3 is opened, the leading end of the document 6 is pressed against the document positioning member 22, and the width direction of the document 6 is displayed in accordance with the display of the size display section 29. The original 6 is set with the position of the document 6 set.

When the upper case 3 is closed after the document 6 is set, the document positioning member release mechanism 23 is operated by the upper case 3, and the document positioning member 22 is released below the document conveying path 4, The document 6 can be conveyed.

Although the embodiment shown in the drawings shows a case where the original reading apparatus of the present invention is incorporated in a facsimile apparatus, it may be incorporated in a copying apparatus or the like. Further, the structures of the document positioning member and the document positioning member relief mechanism are not limited to those of the embodiment, and the document positioning member relief mechanism may be manually operated as necessary.

[Effects of the Invention] The original reading apparatus of the present invention has the configuration described above, and thus has the following effects.

(1) Since a tray or a width guide unlike a conventional document reading apparatus is not used, the apparatus can be downsized. (2) It is easy to assemble it into a facsimile machine, that is, to incorporate it into a facsimile machine. (3) With a simple operation of pressing the leading edge of the document against the document positioning member, the document can be reliably set at a right angle to the document transport roller.

[Brief description of the drawings]

FIG. 1 is a perspective view of the original reading apparatus of the present invention, FIG. 2 is a sectional view of the same, FIG. 3 is a sectional view of a state in which a cover is closed, and FIG. 4 is a sectional view of a conventional example. DESCRIPTION OF SYMBOLS 1 ... Original reading device, 2 ... Lower case, 3 ... Upper case, 4 ...
Document conveyance path, 5: document insertion port, 6: document, 8, 9: conveyance roller, 10, 11: pressure roller, 11: document reading section, 22: document positioning member, 23: document positioning member escape mechanism.

Claims (1)

(57) [Scope of request for utility model registration] A lower case having an opening at an upper side; an upper case rotatably mounted on the lower case so as to be detachably attachable and having an opening at a lower side; and an opening of the upper case. A pair of pressing rollers mounted in parallel, a document reading unit between the pair of pressing rollers, the opening of the upper case and the reading unit mounted substantially in parallel, and the opening of the lower case Are substantially parallel to each other, and when the opening of the upper case and the opening of the lower case are opposed to each other,
A pair of transport rollers attached to a position facing the pair of pressure rollers, between the pair of transport rollers, and mounted substantially parallel to the pair of transport rollers, and the lower case and the upper case A document positioning member for abutting a leading end of a document conveyed to a document conveyance path constituted by a gap, and when the opening of the upper case is opposed to the opening of the lower case, the document positioning member is A document reading device comprising: a document positioning member release mechanism for releasing the document from the document conveyance path.