JP2511668Y2 - Document separating and feeding device - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is a document mounted on a facsimile, a copying machine, or the like, which separates the documents set on a document setting table one by one and feeds them to the next process. It concerns separate feeders (commonly referred to as ADFs).

(Prior Art) Regarding a facsimile equipped with this type of ADF,
This will be described with reference to the drawings. D is a plurality of transmission originals set on the original set table, and a portion indicated by 1 is an ADF, and the plurality of originals D are separated one by one and fed to the next process. Two
Numerals 3 and 3 are conveying rollers, which guide the separated and fed document to the reading portion, and after reading the document, eject it. Reference numeral 4 is a contact glass of the reading unit, which illuminates an original passing therethrough with a light source 5, guides the reflected light to an imaging lens 7 by a mirror 6, forms an image on a reading sensor 8, and photoelectrically converts it. To read.

In addition, the received recording is the recording paper pulled out from the roll 9.
Guide 10 between the thermal head 11 and the platen roller 12,
After recording with the thermal head 11, cut with the cutter 13,
The sheet is discharged by the sheet discharge roller 14.

FIG. 4 is an enlarged view of the ADF1 portion, and 15 is a pressure plate. Reference numeral 16 is a pick-up roller, which is raised during document feeding and comes into contact with the lower surface of the document to feed the document D to the separating portion.
Reference numeral 17 is a feed roller, and reference numeral 18 is a separation roller that comes into pressure contact with the feed roller by an urging force of a spring member or the like (not shown). The feed roller 17 rotates as shown by the arrow, but the separation roller 18 does not rotate within the range of the predetermined limit torque. As a result, only one document at the bottom is separated and fed to the next process.

In FIG. 5, the separation pad 19 is used in place of the separation roller, and the separation pad 19 has elasticity and the feed roller 17
Is pressed against. Also in this configuration, the upper original is prevented from being fed, so that only the lowermost original is separated and fed.

By the way, in the ADF shown in FIG. 4, when the document D is set on the document setting table, if the document is held firmly in the hand and is inserted deeply, the leading end of the document is separated as shown in FIG. The rollers 18 may be lifted up and a plurality of them may be put together to enter between the feed roller 17 and the separation roller 18.
In such a state, the separating operation becomes impossible and a problem of double feeding occurs. This problem can also occur in the case of using the separation pad as shown in FIG.

In order to prevent this, there is known a structure in which a stopper is provided immediately before the separating section so that the leading edge of the original does not go further into the original when the original is set, and the stopper retracts at the start of separate feeding. Has been.

(Problems to be solved by the invention) However, providing such a stopper separately has a problem that the number of parts increases and the cost increases.

The present invention solves the above-mentioned conventional problems and provides a document separating / feeding function in which the feed roller has a pickup roller function as well as a stopper function without increasing the number of parts. An object is to provide a feeding device.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention has a separating member that also serves as a stopper for preventing excessive insertion of a document and hangs down near the rear end of the document setting table; The feed roller also moves diagonally upward and pushes the lower end of the hanging separating member toward the next process to incline the separating member, and also feeds the original to the inclined surface of the inclined separating member.

(Operation) According to this configuration, when the original is set, the separating member hangs near the rear end of the original setting table. Therefore, even if a manuscript held in the hand is inserted, the leading end of the original does not touch the separating member. Therefore, the original is set at a proper position. Then, when document feeding is started, the feed roller starts rotating and moves diagonally upward, pushing the lower end of the hanging separating member forward to tilt the separating member, and at the same time separating the document from the feeding roller. Send between the members. Therefore, the feed roller and the separating member cooperate to separate the originals one by one and feed them to the next process.

(Example) Hereinafter, an example will be described in detail with reference to the drawings.

FIG. 1 shows an ADF according to an embodiment of the present invention.
Is a separating member composed of a separating rubber 21 and a backing plate 22, and is a separating member hanging near the rear end of the document setting table, which also serves as a stopper for preventing excessive insertion of the document, and 23 is a surface which presses the surface of the backing plate 22 and It is a pressure spring that can be displaced along. Reference numeral 24 is a feed roller which also serves as a pickup roller, which is lifted obliquely upward as shown by an arrow A when the document is fed.

Next, the operation of this embodiment will be described. First, when setting a document, as shown in FIG. 1, the separating member 20 hangs down near the rear end of the document setting table. Therefore, when the document D is inserted, the leading end of the document touches the separating member 20. Stop. Next, when the feeding of the original is started, the feed roller 24 starts rotating and moves obliquely upward as indicated by an arrow A. Therefore, as shown in FIG. 2, the feed roller 24 pushes the lower end of the hanging separating member 20 forward to incline the separating member, and at the same time, contacts the lower surface of the document, so that the document D is separated from the feeding roller. Send in between. This state is the same as the state of the separation section of the conventional example shown in FIG.
And the separating member 20 cooperate to separate the originals one by one and feed them to the next step.

In the present embodiment configured as described above, even though the number of parts of the separating member 20 is almost the same as the case of FIG. 5 using the conventional separating pad, it also has a stopper function. Also, since the feed roller 24 also has the function of a pickup roller, an independent pickup roller becomes unnecessary.

(Effects of the Invention) As described above, according to the present invention, the separating member is provided with a stopper function at the time of setting a document without increasing the number of parts, while the feed roller is provided with
By providing the function of the pickup roller together, the conventional pickup roller can be omitted, and the quality can be improved and the cost can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an ADF according to an embodiment of the present invention, FIG. 2 is an operation explanatory diagram of the same embodiment, FIG. 3 is a configuration diagram of a facsimile equipped with the ADF, and FIG. FIG. 5 is a configuration diagram of a conventional ADF using a roller, FIG. 5 is a configuration diagram of a conventional ADF using a separation pad, and FIG. 6 is a diagram showing a state of double feeding in a conventional example. 20 ... Separator / separator, 21 ... Separator rubber, 22 ... Back plate,
23 ... Pressure spring, 24 ... Pickup roller and feed roller.

Claims (1)

(57) [Scope of utility model registration request] 1. A document separating / feeding device for separating documents set on a document setting table one by one and feeding them to the next step, wherein the document is hung near the end of the document setting table. A separating member that also serves as a stopper for preventing excessive insertion, and an obliquely upward movement when feeding a document, inclining the separating member by pushing the lower end of the hanging separating member toward the next process side, and the inclined surface of the inclined separating member. A document separating / feeding device comprising a feed roller which also serves as a pickup roller for feeding the document to the.