JPS628657A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To detect the two-sheet sending of the original with good accuracy by detecting the original length of the original during the travelling and comparing the reference value. CONSTITUTION:The distance, in which an original 1 travels, can be easily obtained by counting the number of the pulse of the pulse motor for travelling used for the travelling of the original 1 while the condition of a light receiving part 31 is changed and returned to the initial condition, and the distance is equivalent to the original length. A pulse number P2 equivalent to an original length L+alpha and a reference pulse number P1 from a reference value generating part 5 are compared by a comparing part 4. If the two-sheet sending of the original 1 occurs, the pulse number P2 from a detecting part 3 is naturally increased. Consequently, in the comparing part 4, it is decided that a detecting value P2 is greater than a reference value P1, and it is recognized that the two-sheet sending occurs.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine, and more particularly to a facsimile machine that has the same detection accuracy for simultaneous two-sheet feeding (hereinafter referred to as two-sheet feeding) of a document.

[Conventional technology]

Conventionally, this type of facsimile apparatus has been provided with various criteria for detecting document running abnormalities (hereinafter referred to as "jams"), including document jams during traveling and double-sheet feeding of documents. For example, to detect two-sheet feeding, a device uses the number of driving pulses of the document traveling motor as a reference. However, such conventional standards are generally set to loose values with redundancy in order to adapt to manuscripts of various sizes.

[Problem that the invention seeks to solve]

In the conventional facsimile machine described above, the standard value for detecting a jam is set loosely, so there are cases where a jam is detected and cases where a jam is not detected, depending on the relationship between the documents. . In other words, even if two sheets are fed, if the overlapping portion is within a small range, it is determined that the document as a whole has become long, and a jam is detected. However, even with two-sheet feeding, if the X area is large, the length of the document as a whole will hardly change, and the device will recognize it as a document of normal length. There is a drawback that detection of two-sheet feed is not performed.

[Means for solving problems]

The facsimile apparatus of the present invention includes a document running means for moving a document, a document reading means for reading image information of the document and converting it into an electric multiple number, a document length detecting means for detecting the entire document length of the document, and a document length detecting means for detecting the entire length of the document. A reference value generation means for generating a reference value corresponding to a document length, a comparison means for comparing a value detected by the document length detection means and the reference value, and a display means for displaying the result of the comparison means. There is.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 (al is a configuration diagram of an embodiment of the present invention, the same figure (bl
is a partial detailed view of the same figure (al, Figure 2 (al, (b)
FIG. 2 is an explanatory diagram showing the document length in this embodiment.

In this embodiment, a document 11, a substrate 2, a detection section 3, a comparison section 4,
It has a base plate, a value generating section 5, a display section 6, a document running section 11, and a document reading section 12.

It is assumed that the document 1 is input by the operator into the 7-axis device and has a constant document length.

The body 2 is the body of this facsimile machine. The detection unit 3 is a part that detects the document length. The comparison unit 4 compares the original length detected by the detection unit 3 with the standard value? A comparison is made to determine whether or not two-sheet feeding has been performed.

The reference value generating section 5 generates a reference value based on the number of pulses required by, for example, a pulse motor for traveling (not shown) in order to cause the document 1 of a certain length to travel through the document reading section 12 by the document traveling section 11. The display unit 6 is a man-machine interface that displays the content determined by the comparison unit 4.
Ru.

FIG. 1(b) shows the details of the detection section 30, and the light receiving section 3
1 is a phototransistor as a light receiving element, and a light emitting section 32 is a light emitting diode as a light emitting element. Light receiving section 31 and light emitting section 32
are placed facing each other at positions that sandwich the original 1t when the original 1 is traveling.

In addition, as shown in FIG. 2, the reference value 't'' P t of the number of pulses generated by the reference value generating section 5 is set corresponding to the document l with the -leg length shown in FIG. bl manuscript length L+a
The number of pulses generated by the detection unit 3 corresponding to the above is assumed to be P2. The above document length L+α is the document length when two sheets of document 1 are fed.

Next, the operation of this embodiment will be explained. The document 1 is passed over the document body 2 by the document traveling section 11 to the document reading section 12.
Similarly, the vehicle travels in the direction of arrow F.

When the document 1 travels and its leading edge reaches between the light receiving section 31 and the light emitting section 320, the state of the light receiving section 3''l changes because the light from the light emitting section 32 shines on it. When the document 1 travels and the rear end of the document 1 passes between the light-receiving section 31 and the light-emitting section 32, the state of the light-receiving section 31 returns to its original state.Here, the distance that the document 1 has traveled is This distance can be easily determined by counting the pulses i't of a pulse motor (not shown) used for traveling, from when the state of the light receiving section 31 changes until it returns to its original state. corresponds to the document length. That is, the detection unit 3 replaces the document length L+α with the number of pulses P2.

The number of pulses P corresponding to the document length L+α detected by the detection section 3 as described above and the reference number of pulses P from the reference value generation section 5! are compared in the comparison section 4. If the second
If two sheets of original l are fed as shown in the figure (bl), the number of pulses P from the detection unit 3 naturally increases. Therefore, in the comparison unit 4, the detected value P8
It is determined that there are many n12-sheet feeds, and it is recognized that this occurs. The display section 6 displays information regarding two-sheet feeding based on the comparison section 40 determination results.

In this embodiment, a constant document length and a corresponding pulse reference value have been described, but the reference value generation unit 5
Needless to say, several types of pulse reference values corresponding to several types of document lengths may be prepared, and the operator may switch between them depending on the document length.

〔Effect of the invention〕

As described above, the present invention has the advantage of being able to accurately detect two-sheet feeding of a document by detecting the document length of a traveling document and comparing it with a reference value.

[Brief explanation of drawings]

FIG. 1 1al is a block diagram of a simple embodiment of the present invention;
is a partial detailed view of the same figure (al), Figure 2 (al, (bl
FIG. 2 is an explanatory diagram showing the document length in this embodiment. 1... Manuscript, 2... Japanese text, 3...
...Detection section, 4...Comparison section, 5...
・Reference value generation section, 6...Display section, 11...
...Document running section, 12...Document reading section, 31.
... Light receiving section, 32 ... Light emitting section 0 rod IU
gJ well 2 diagram

Claims (1)

[Claims] In a facsimile machine, the facsimile apparatus includes a document running means for moving a document, and a document reading means for reading image information of the document and converting it into an electrical signal, and a document length detecting means for detecting the document length of the document; It is characterized by comprising a reference value generating means for generating a corresponding reference value, a comparing means for comparing a value detected by the document length detecting means with the reference value, and a display means for displaying the result of the comparing means. facsimile machine.