JP2005134424A - Document reading device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a document reading device capable of correctly detecting a left document by combinations of a sensor and soft processing. <P>SOLUTION: The document reading device includes an FBS sensor S1 that detects the placement of a document on a flat bed, a timer measurement means 10a that measures a predetermined time, and a left document determination means that outputs an alarm when the document is left, which is determined if a predetermined operation is not carried out with an operation key 80a within the predetermined time after the detection of the document by the FBS sensor S1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a document reading apparatus having a flat bed scanner (hereinafter referred to as FBS) type document reading unit, and more particularly to a document reading apparatus having a function of preventing a document from being left on a document table. .

  The FBS-type document reading unit reads a document image by placing a document on a document table and scanning the scanner. At this time, the document placed on the document table is closed by the document cover, and the user cannot see the document. Therefore, when the user is in a hurry, the discharged recording paper is distracted. Often, a document is left on the platen. In order to solve such inconveniences, various means for preventing misplacement of documents have been devised.

For example, if the opening / closing of the document cover is not detected after the document reading is completed, it is considered that the document is misplaced and a warning is issued (Patent Document 1).
JP-A-8-234331

  However, in such a conventional apparatus, the document is misplaced after the document reading is completed, and it is configured on the assumption that the document lid is closed and the copying operation is performed. When the copying operation is performed with the document opened, it is impossible to detect a misplaced document.

  In addition, since the presence or absence of a document is not observed, even if the document is read without being placed, it is considered that the document has been left behind, and thus the detection accuracy is lacking.

  The present invention has been made in view of such circumstances, and an object thereof is to provide an original reading apparatus that can detect a misplacement of an original more accurately while having a simple structure.

  Claim 1 proposed to achieve the above object is an original reading apparatus having a flat bed, an FBS sensor for detecting the placement of the original on the flat bed, a timer timing means for measuring a predetermined time, If the FBS sensor detects a document and does not execute a predetermined operation using the operation key within the predetermined time, it is considered that the document remains and a document remaining judgment means for outputting an alarm. And.

  A second aspect of the present invention is the first aspect of the present invention, wherein the remaining document determining means is further set by the timer timing means from when the FBS sensor detects the original after a predetermined operation is performed by the key operation. If the FBS sensor does not detect that there is no document before a predetermined time elapses, it is considered that the document remains, and an alarm is output.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the flatbed is further provided with a document lid open / close detection sensor for detecting opening / closing of the document lid, until the timer timing means passes a predetermined time. During this period, the document lid open / close detection sensor detects opening or closing, and when the FBS sensor determines that no document is detected, the operation is terminated.

  According to the first aspect of the present invention, the misplacement of the original can be accurately detected by the combination of the sensor and the software processing, and the misplacement of the original can be prevented. In addition, it is possible to detect the misplacement of a document even when a copy operation is performed before the document is read or when the document cover is opened.

  According to the second aspect of the present invention, it is possible to accurately detect the misplacement of the original after the completion of the original reading and to prevent the misplacement of the original by combining the sensor and the software processing. Further, even when a copying operation is performed with the document cover open, it is possible to detect a misplaced document.

  According to the third aspect of the present invention, it is possible to accurately detect that the document has been removed by the combination of the sensor and the software processing.

  Embodiments of the present invention will be described below.

  FIG. 1 shows an example of a document reading apparatus F according to the present invention. Here, as an example of the document reading device F, a configuration of a device having an FBS-type document reading unit is shown, but a device having an automatic document feeder (ADF) function may be used. The function is applied when a document is read by a flatbed scanner (FBS).

  FIG. 1 is a schematic front view of the document reading device F. FIG. Reference numeral 1 denotes a document reading unit main body whose upper surface is a glass platen 1a, and A is a document attached to the side of the document reading unit main body 1 so as to be freely opened and closed so as to press a document placed on the document table 1a. The lid S3 is a scanning body in which a light source (not shown) such as a fluorescent lamp and a CCD (not shown) are unitized. S1 is an FBS sensor that detects the presence or absence of a document on the document table 1a, and S2 is a document lid open / close detection sensor that detects the open / closed state of the document lid A.

  The scanning body S3 irradiates a document with light from a light source, receives the reflected light on a CCD, and converts it into image information as an electrical signal. When scanning the FBS document D placed on the document table 1a, the scanning body S3 travels in parallel on the lower surface of the document table 1a from the standby position P1 to the P2 position, and reads the image information of the document D during that time.

  The FBS sensor S1 is installed on the side of the document table 1a or the like, and a known sensor such as a reflection type, a light receiving type, or a limit switch is employed. Alternatively, the scanning body S can be run along the document table 1a, and the presence or absence of the document can be detected based on the scanning information.

  The document lid open / close detection sensor S2 may be provided on the document reading unit main body 1 side as shown in the figure, or may be provided on the document lid A side, and may be configured to recognize the closing direction and the opening direction of the document lid A. Alternatively, a configuration in which a light receiving element is incorporated and the opening / closing of the document cover A is detected based on the amount of received light may be employed.

  FIG. 2 is a block diagram showing an internal configuration of the document reading apparatus F according to the present invention. Here, the document reading device F is shown having a facsimile communication function, but the present invention is not limited to this, and it can also be provided with only a copy function. (FBS) is applied when reading an original.

  In this document reading apparatus F, 10 is constituted by a CPU, and a control unit that controls each part, 20 is an NCU that sends a dial signal to the telephone line L, and controls connection to the telephone line L, and 30 is a facsimile communication. A modem for modulating and demodulating signals, a ROM 40 for storing a control program in advance, a RAM 50 for storing various data, a document reading unit 60 for reading image data from a set document, and 70 A display unit composed of an image liquid crystal display or the like, an operation unit 80 composed of various keys, and 90 a printer.

  Here, the control unit 10 includes a timer timing unit 10a that counts at least a predetermined time. If a predetermined operation operation is not executed using the operation key 80a within a predetermined time after the FBS sensor S1 detects the original, it is considered that the original remains and an alarm (not shown) is output. That is, no operation is performed even though the document is placed on the document table, it is considered that the document is left with the document placed and the user is notified by an alarm.

  Conventionally, it is not a design matter to leave a document before reading it, and it is not a design matter, and when copying with the document cover open, the document will not be hidden by the document cover. According to the present invention, the document can be misplaced even in the above case and can be detected.

  According to the above, the combination of the sensor and the software processing can accurately detect the misplacement of the original and can prevent the misplacement of the original. In addition, it is possible to detect the misplacement of a document even when a copy operation is performed before the document is read or when the document cover is opened.

  After the operation is executed, the remaining document determining means is configured such that the FBS sensor S1 does not detect the absence of the document between the time when the FBS sensor S1 detects the document and the elapse of a predetermined time set by the timer timing means 10a. Then, it is assumed that the document remains, and an alarm is output. That is, after the operation is performed (for example, after the document reading is completed), when the FBS sensor S1 detects the document and a predetermined time elapses, an alarm is output.

  As described above, the combination of the sensor and the software processing can accurately detect the misplacement of the document even after the operation is executed, and can prevent the misplacement of the document.

  As described above, the document reading device F is provided with the document lid open / close detection sensor S2 that detects the opening / closing of the document lid A, and the document lid A is opened / closed until a predetermined time elapses. Yes, when the FBS sensor S1 determines that no document is detected, the operation is terminated.

  That is, when the opening / closing of the document cover A is detected before the timer expires, and it is detected that there is no document, the operation is terminated as if the document was removed.

  At this time, it is only necessary to detect whether the document cover A is open or closed. That is, when the document cover A is closed, it is detected that the document cover A is opened, and when the document cover A is opened, it is detected that the document cover A is closed. For example, when copying a thick book, the document cover A cannot be closed for copying. Even in such a case, according to the above configuration, misplacement can be detected, and it can also be detected that the document has been removed.

  FIG. 3 is a flowchart (S100 to S106) showing an example of the basic operation.

  After the document is detected on the document table 1a (S100), the key operation 80a (S102) and the document cover A are not opened and closed (S105), and if a predetermined time elapses (S103), an alarm is output (S104). ).

  If there is a key operation before the timer expires, the operation is executed (S106). Thereafter, if there is no document on the document table 1a (S100), the operation is terminated.

  On the other hand, if there is a document (S100), the timer is started again (S101) and the above monitoring is performed.

  Until the timer expires (S103), the document cover A detects opening / closing (S105), and if there is no document (S100), the operation is terminated.

  On the other hand, if there is a document (S100), the timer is started again (S101) and the above monitoring is performed.

  After the operation is executed (S106), if a document on the document table 1a is detected (S100), a timer is started (S101), the above monitoring is performed, and when the timer expires (S103), an alarm is output (S104). However, if there is no document on the document table 1a (S100), the operation is terminated.

  Here, the notification means is not limited to an alarm, and may be configured to display a voice message or a message such as “forgetting the original” on the display unit 70.

  Moreover, the predetermined time which the timer time measuring means 10a measures may be variably settable.

The figure which shows an example of the external appearance of the original document reading apparatus of this invention 1 is a block diagram showing an example of a basic configuration of a document reading apparatus according to the present invention. Flow chart showing basic operation of the present invention

Explanation of symbols

F Document reading device A Document cover D Document 1 Document reading unit body 1a Document table (FBS)
S1 FBS sensor S2 Document cover open / close detection sensor 10 Control unit 10a Timer timing means 20 NCU
30 modem 40 ROM
50 RAM
60 Document Reading Unit 70 Display Unit 80 Operation Unit 80a Operation Key 90 Printer

Claims (3)

In a document reading apparatus having a flat bed,
An FBS sensor for detecting the placement of the document on the flat bed, a timer timing unit for measuring a predetermined time, and a predetermined time using an operation key within the predetermined time after the FBS sensor detects the document. A document reading apparatus comprising: a document remaining determining unit that outputs an alarm when the operation is not performed, assuming that the document remains. In claim 1,
After the predetermined operation operation is performed by the key operation, the document remaining determination means is between when the FBS sensor detects the document and until a predetermined time further set by the timer timing means elapses. An original reading apparatus characterized in that when the FBS sensor does not detect that there is no original, the original is regarded as remaining and an alarm is output. In claim 1 or claim 2,
The flat bed is further provided with a document lid opening / closing detection sensor for detecting opening / closing of the document lid, and the document lid opening / closing detection sensor is opened or closed before a predetermined time elapses. The document reading apparatus is characterized in that the operation is terminated when the FBS sensor determines that no document is detected.

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