JP3366779B2 - Automatic document feeder - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to an apparatus capable of reading an image, such as a copying machine or a facsimile apparatus, and separates a loaded bundle of documents one by one. And an automatic document feeder that conveys the document to a predetermined reading position. 2. Description of the Related Art In recent years, some copying machines have not only a function as a copying machine but also a plurality of functions in a single machine. For example, the function of a facsimile machine is provided by digitization. The development of things is progressing.
2. Description of the Related Art Conventionally, a facsimile apparatus is provided with a printing device (hereinafter, referred to as a stamp) that prints a mark (hereinafter, referred to as a completed mark) on a document to indicate that transmission of the document has been completed. Here, if the facsimile function is added to the copier,
The stamp must also be located on the copier. Also,
When the automatic document feeding unit is mounted on the copying machine, arranging the stamp on the automatic document feeding unit can provide more rational equipment than attaching the stamp to the copying machine body. As an automatic document feeding unit as described above, for example, a stamp for marking a document from which an image has been read is described in the specification and drawings of Japanese Patent Application No. 6-27782 already filed by the present applicant. There is described an automatic document feeder provided with a stamp mounted thereon and a cover which forms a part of the exterior of the apparatus main body and is supported so as to be openable and closable. In general, a stamp needs to be replaced or replenished with a consumable member such as ink regularly. Therefore, by arranging the stamp on a cover that can be opened and closed, the user can easily replace the consumables. In an automatic document feeder in which a stamp is arranged on an opening / closing cover which forms a part of an exterior, a print pattern of the stamp is printed on a guide plate or the like constituting a document conveying path. An opening for inserting the portion is formed, and by pressing the print pattern portion onto the document through the opening, the done mark is printed on the image surface of the document. For this reason, even if the opening / closing cover is not completely closed due to the carelessness of the user or the like, this does not normally affect the conveyance of the original, but it is naturally possible to print the done mark on the original. If the original is conveyed while foreign matter is accidentally inserted into the opening, the original and the apparatus may be damaged. Problems also arise. In order to solve the above-mentioned problem, the present invention comprises means for coping with a case where the opening / closing cover on which the printing means is arranged is not completely closed, and the means for printing the original by the printing means by this means. It is an object of the present invention to provide an automatic document feeder in which the reliability of the document is improved and the document and the apparatus are prevented from being damaged even when the opening / closing cover is not completely closed. In order to solve the above-mentioned problems, an automatic document feeder according to the present invention comprises a loading detecting means for detecting a bundle of documents loaded on a document placing portion; Transport means for separating the document bundle on the mounting portion, transporting the document bundle to a reading position, and discharging the document whose image has been read by the reading device at the reading position, and the reading position when a print mode is set. Control means for controlling the transport means so that the document is temporarily stopped at a marking position between the document position and the discharge position, and reading of the image surface of the document once stopped at the marking position is completed when the print mode is set. A printing means for printing a mark for indicating that the printing has been performed, and a mounting portion on which the printing means is arranged, and forming at least a part of an exterior of the apparatus main body, supported by the apparatus main body to be openable and closable, and closed. An opening / closing cover for supporting a printing means arranged at a position in the mounting portion at a position where printing can be performed on a document; and setting one of the printing mode and the non-printing mode as an operation mode of the apparatus for the control means. In an automatic document feeder provided with mode switching means, a cover detection means for detecting opening and closing of the open / close cover, and the print mode is set, and the document conveyance means starts conveyance of a document from the document placement unit. Control means for canceling a print mode and setting the non-print mode as an operation mode when it is determined that the open / close cover is at the non-close position by a detection signal from the cover detection means. It is characterized by the following. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing an internal structure of an automatic document feeder unit according to an embodiment of the present invention. The illustrated automatic document feeder unit is applied to a copying machine having a facsimile function. I do. 1 is a call roller for feeding a document (not shown) loaded on the document table 28 into the apparatus,
Reference numeral 2 denotes a press lever for pressing the call roller 1, reference numeral 3 denotes a document set detection filler, reference numeral 4 denotes a document stopper, and press levers 2, document set detection fillers 3, and drive shafts (not shown) of the document stopper 4 are coaxial with each other. Are located. Reference numeral 5 denotes a separation belt driven roller, 6 denotes a separation belt, 7 denotes a separation roller, 8 denotes a separation belt driving roller, and the separation belt 6 is stretched by the separation belt driven roller 5 and the separation belt driving roller 8. A separation roller 7 is in contact with 6. 9
Is a size detection sensor that detects the length of the document in the sub-scanning direction, 10 is a pull-out driving roller that conveys the document to the image reading unit at a predetermined timing, 11 is a pull-out driven roller that abuts on and is driven by the pull-out driving roller 10, and 12 A document set sensor serving as a loading detection unit that detects that a document has been set by detecting an operation of the document set detection filler 3;
Reference numeral 13 denotes a registration sensor for detecting the leading end of the document conveyed from the pull-out driving roller 10, and the above-described members constitute a paper feed / separation mechanism. Reference numeral 14 denotes a conveyance belt driving roller, 15 denotes a conveyance belt fixing roller, 16 denotes a conveyance belt holding roller, 17 denotes a conveyance belt, 18 denotes a contact glass, 19 denotes a conveyance belt driven roller, and the conveyance belt 17 is Conveyor belt drive roller 14
And the conveyor belt driven roller 19,
It is fixed and held on the contact glass 18 by the conveyor belt fixing roller 15 and the conveyor belt pressing roller 16. Such a member constitutes a transport mechanism on the contact glass 18. Further, reference numeral 20 denotes a reversing drive roller for receiving a document from the transport belt 17 and transporting the document, reference numeral 21 denotes a reversing entrance driven roller which abuts on and is driven by the reversing drive roller 20, and reference numeral 22 denotes reversing / detecting means serving as transport detecting means. Discharge sensor, 23 is a guide roller that guides the document conveyed by the reversing drive roller 20, 24 is a switching claw that switches the document conveyance path between the discharge side and the reversal side, 25 is abutting on the reversal drive roller 20 to be driven Reversing exit driven rollers, 26
Is a paper discharge drive roller for discharging the document to the outside, 27 is a paper discharge driven roller that abuts on and is driven by the paper discharge drive roller 26, 28 is a document table which is a document mounting portion on which a plurality of documents can be loaded, and 29 is a document table. The reference table 30 is used to reverse the original from the conveyor belt 17
Reference numeral 20 denotes a body document guide that guides the document, and 31 denotes a document discharge unit that receives a discharged document. Such a member constitutes a paper discharge mechanism. 2 and 3 are enlarged views of the vicinity of the stamp in the automatic document feeder unit shown in FIG. 1, respectively. FIG. 2 shows a state where the stamp 50 is not performing a printing operation. Reference numeral 3 denotes a state when the stamp 50 is executing a printing operation. Reference numeral 40 denotes a rib formed on a guide plate 41 constituting a document conveyance path. The rib 40 is arranged at a marking position where printing is performed on the document. Numeral 50 denotes a stamp as a printing means, and numeral 51 denotes a stamper having a print pattern engraved on the front surface for indicating that reading has been completed. By driving the stamp 50, the stamper 51 is inserted into the conveyance path through the insertion hole 43, which is an opening formed in the guide plate 42, facing the rib 40. The “Done” mark is printed. FIG. 4 is a block diagram showing a main control unit and a drive system in the automatic document feeder unit shown in FIG.
Reference numeral 100 denotes a main control unit serving as control means; 101, a feed motor for driving the calling roller 1, separation roller 7, separation belt driving roller 8, and pullout driving roller 10; 102, a conveyance belt motor for driving the conveyance belt driving roller 14; , 103 is a reversing / discharge motor for driving the reversing drive roller 20 and the paper discharge drive roller 26, 104 is a calling solenoid for driving the press lever 2 and the document stopper 4, 105 is a reversing solenoid for driving the switching claw 24, 106 107 is a gear train having a one-way clutch (not shown), R is a return spring, and T is a timing belt. The main control unit 100 controls the operations of the sheet feeding motor 101, the conveying belt motor 102, the reversing / discharging motor 103, and the calling solenoid 104. Based on the control, the calling roller 1, the holding lever 2,
Document stopper 4, separation roller 7, separation belt drive roller 8,
The pull-out drive roller 10, the transport belt drive roller 14, the switching claw 24, the paper discharge drive roller 26, the reverse drive roller 20, and the like are driven. Further, the main control unit 100 receives detection signals from the size detection sensor 9, the document set sensor 12, the registration sensor 13, the reversal / discharge sensor 22, and a cover detection sensor 65 described later. Is connected. The operation / display unit 110 includes a display panel 111 for displaying information necessary for the user, such as alarm information, a reading start button 112, and a mode switching button 11.
3, operation members such as ten keys 114 are arranged. operation·
The display unit 110 is shared with the copier, and the main control unit 1
The necessary information is displayed to the user on the display panel 111 based on various signals from 00, and further, an operation signal corresponding to the user's operation on the operation member is output to the main control unit 100, and is not shown. Signals are also input and output to and from the main control unit of the copying machine. Next, the basic operation of the automatic document feeder of this embodiment will be described. The document feed path in the automatic document feeder unit feeds a document into a feed / separation mechanism provided on the left side in FIG. 1, and the document is sent to the transport belt 17 while being inverted, and the document transported by the transport belt 17 is After stopping at a predetermined reading position on the contact glass 18 and scanning by a scanner (not shown) arranged below the contact glass 18,
The path is configured to be discharged to a document discharge section 31 below the document table 28 through a paper feed mechanism. When an original is placed on the original table 28 with its front side facing upward, the original lifts the presser lever 2, and in conjunction therewith, the original set detection filler 3 disposed coaxially with the drive shaft of the original stopper 4. Is lifted, the document set sensor 12 detects that a document is set on the document table 28. In response to the detection signal from the document set sensor 12, the main control unit 100 restores the calling solenoid 104 shown in FIG. As a result, the presser lever 2 is pressed toward the page roller 1 by the return spring R, and the document stopper 4 formed integrally with the presser lever 2 is released. Next, when the paper feed motor 101 is rotated clockwise in FIG. 4, the recall roller 1, the separation roller 7, and the pull-out drive roller 10 are driven. Separated by the separation belt 6. At this time, the power is not transmitted by the one-way clutch of the gear 106, so that the separation belt 6 is in a stopped state.
The separated document is stopped at the position where the leading end is detected by the registration sensor 13. Next, the feed motor 101 and the transport belt motor 1
02 rotates counterclockwise in FIG. 4 and pull-out drive roller 10
And separation belt drive roller 8, transport belt drive roller 14
Is driven, the document is conveyed to the reading position on the contact glass 18 and stopped. At this time, the gear 107 is idled by the one-way clutch, and power is transmitted only by the gear 106, so that the call roller 1 and the separation roller 7 are stopped. However, each of the gear 107 and the separation roller 7 is also provided with a one-way clutch, and is capable of idling in the document advancing direction. After the scanning is completed, the original fed to the reversing drive roller 20 by the transport belt 17 is discharged to the original discharge section 31 by the discharge drive roller 26. Next, at the time of document reversal, the main control unit 100 turns on the reversing solenoid 105 shown in FIG.
The document is guided to the reversing path by the switching claw 24, and the reversing drive roller 20 is used.
To return to the contact glass 18. At this time, the transport belt motor 102 rotates clockwise, transports the document to the reading position by the transport belt 17, and stops. The reversing / discharge motor 103 always rotates counterclockwise. Here, the reversing / discharge sensor 22 is arranged on the downstream side of the reading position in the document conveying path, and the marking position is set slightly downstream of the document detecting position by the reversing / discharge sensor 22. Further, the stamp 50 that performs a printing operation at the marking position operates according to the same principle as the electromagnetic solenoid. That is, as shown in FIG. 3, the stamper 51 is fixed to the plunger portion of the solenoid, and the main control unit 10
When the print signal from 0 is turned on, the stamper 51 projects and stamps the original on the rib 40. When the printing signal is turned off after the stamping is completed, the stamp 50 returns the stamper 51 to the position shown in FIG. This return operation is
The adjustment may be performed by the weight of 51, or may be forcibly returned by the force of the spring. In addition,
The stamper 51 is held at a position where the stamper 51 does not protrude from the insertion hole 43 into the transport path during standby for a printing operation. Next, the configuration of the stamp unit in the automatic document feeding unit of the present embodiment will be described. FIG. 5 is an exploded perspective view of the vicinity of a mounting portion of the opening / closing cover in the automatic document feeding unit of the present embodiment, and FIG. 6 is a perspective view of the opening / closing cover and the stamp housing portion in the automatic document feeding unit of the present embodiment. 60 and 61 are guide plates 42, respectively.
In the automatic document feeder unit according to the present embodiment, the discharge unit cover 60 is screwed to the unit body, and other automatic document feeders without the stamp 50 are provided. In the paper unit, the paper output unit cover 61
Is screwed to the unit body. 62
Reference numeral denotes a stamp storage portion that protrudes outward from the paper output unit cover 60, and supports the opening / closing cover 63 so as to be openable and closable. A space in which the stamp 50 can be stored is formed in the stamp storage section 62, and the stamp 50 is supported by a bracket 54 fixed to the inner surface of the opening / closing cover 63. Also, stamp 50
Are connected to the main control unit 100 by a harness 53. An opening 64 is formed in the stamp housing 62 so as to face the insertion hole 43 of the guide plate 42, and a cover detection sensor 65 constituted by a photo interrupter or the like is arranged. Further, a protruding piece 66 and a hooking claw 67 are formed on the inner surface of the opening / closing cover 63, and by moving the opening / closing cover 63 to the closed position, the hooking claw 67 is
68 is latched to hold the opening / closing cover 63 in the closed position. As a means for holding the opening / closing cover 63 in the closed position, a means other than the hooking claws 67 and the hooking holes 68 may be used for holding by the magnetic force of a magnet. When the cover 63 is held at the closed position, the cover detection sensor 65 detects the protruding piece 66 and outputs a detection signal to the main control unit 100. Here, the installation positions of the cover detection sensor 65 and the projecting piece 66 are reversed,
May be arranged on the opening / closing cover 63, and the protruding piece 66 may be arranged inside the stamp storage section 62. By closing the opening / closing cover 63 and holding it in the closed position, the stamp 50 is supported through the opening 64 at the driving position shown in FIGS. Next, the control operation for the stamp 50 in the automatic document feeder of this embodiment will be described. When the user operates the mode switching button 113 of the operation / display unit 110, the main control unit 100 provides a print mode for executing printing on the original by the stamp 50 or a non-print mode for stopping the operation of the stamp 50. One of the operation modes is set. When the print mode is set, the main control unit 100 controls the reversing drive roller after a certain time from the timing when the reversing / discharge sensor 22 detects the document.
By stopping the document 20, the document is temporarily stopped at the marking position, and a drive signal is output to the stamp 50 during the stop period. The stamp 50 prints the completion mark at a predetermined position of the document by input of the drive signal, and after the printing is completed, the document is again started to be conveyed, inverted and returned to the reading position, or
Alternatively, the document is discharged to the document discharge unit 31. When the print mode or the non-print mode is set, the cover may be opened or closed by carelessness of the user.
It is believed that 63 may not be completely closed.
In such a case, even if the print mode is set as the operation mode of the apparatus, the stamp 50 is not supported at the driving position, and therefore, the stamp 50 cannot perform printing on the document. Further, even when the non-printing mode is set, foreign matter may be inserted into the document transport path through the opening 64 and the insertion hole 43, so that the reliability and safety of document transport are reduced. . In the automatic document feeding unit of the present embodiment, a plurality of programs corresponding to the case where the opening / closing cover 63 is at the non-closed position are set in the main control unit 100 in advance, and these control programs are, for example, Is selected by changing the setting position of a dip switch, for example, and the main control unit 100 executes control for responding to the case where the open / close cover 63 is in the non-closed position based on the selected control program. Hereinafter, the opening / closing cover 6 by the main control unit 100
Control for responding when 3 is in the non-closed position (hereinafter referred to as
(Referred to simply as control). In the following description, when the reading start button 112 is pressed, the operation / display unit 110
Outputs a paper feed command to the main control unit 100, and the main control unit 100
It is assumed that separation and conveyance of the original loaded in 8 is started.
This document is temporarily stopped at the reading position on the contact glass 18 as described above, and then sent to the reversing / discharge unit after the image is read. When the print mode is set, the document stops at the marking position and the done mark is printed. When the non-printing mode is set, the sheet passes the marking position and is reversed or discharged. FIG. 7 is a flowchart showing the control by the main control unit of the present embodiment. In the first control, after the input of the paper feed command, the detection signal from the cover detection sensor 65 determines that the opening / closing cover 63 is in the non-closed position, and prints the operation mode according to the operation signal from the operation / display unit 110. When the mode is set (S1-1 and S1
In the case of -2, the main control unit 100 cancels the print mode and sets the non-print mode (S1-
3) Feeding is started (S1-4). If the answer is NO in either S1-1 or S1-2, the sheet feeding is started immediately (S1-5). By executing the above control, the printing mode is continued and the original does not stop at the marking position even though the stamp 50 is in a state where printing is not possible. It can be prevented that the transport time up to the point is extended by useless stoppage. As described above, according to the present invention,
The cover detecting means detects whether or not the printing means is at a position where the printing means can print on the document by detecting the opening / closing of the openable / closable cover on which the printing means is disposed and which can be opened and closed. Is determined, it is possible to cope with the case where the opening / closing cover on which the printing means is arranged is not completely closed. Further, the control means determines that the opening / closing cover is in the non-closed position by a detection signal from the cover detection means when the printing mode is set and the document conveyance means starts conveying the document from the document placing portion. In this case, by canceling the print mode and setting the non-print mode as the operation mode, the print mode is continued and the document temporarily stops at the marking position even though the print unit is in a state where printing is not possible. Therefore, it is possible to prevent the transport time from the start of transport to the discharge of paper from being extended by useless stoppage.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view showing an internal configuration of an embodiment of an automatic document feeder according to the present invention. FIG. 2 is an enlarged view of the vicinity of a stamp in the automatic document feeding unit shown in FIG. FIG. 3 is an enlarged view near a stamp in the automatic document feeder unit shown in FIG. 1; FIG. 4 is a configuration diagram illustrating a main control unit and a drive system in the automatic document feeder unit illustrated in FIG. 1; FIG. 5 is an exploded perspective view of the vicinity of a mounting portion of an opening / closing cover in the automatic document feeder unit according to the embodiment of the present invention. FIG. 6 is a perspective view of an opening / closing cover and a stamp storage unit in the automatic document feeder unit according to the embodiment of the present invention. FIG. 7 is a flowchart illustrating control by a main control unit according to the embodiment of the present invention. [Explanation of Signs] 3: Original set detection filler, 12: Original set sensor, 13: Register sensor, 18: Contact glass,
22: reversal / discharge sensor, 42: guide plate, 43: insertion hole, 50: stamp, 51: stamper, 54: bracket, 60: discharge cover, 62: stamp storage, 63
... Opening / closing cover, 64 ... Opening, 65 ... Cover detection sensor, 100 ... Main control unit, 103 ... Reversal / discharge motor,
110 operation / display section, 111 display panel, 112 reading start button, 113 mode switching button, 114 numeric keypad.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroshi Fukano 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd. (56) References JP-A-7-79313 (JP, A) JP-A Sho 58-137847 (JP, A) JP-A-7-10357 (JP, A) JP-A-7-87249 (JP, A) JP-A-64-17557 (JP, A) JP-A-2-32266 (JP, A) U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G03G 15/00 G03G 21/00 G03G 21/14 B41J 29/00-29/70 B65H ⁷ /00-7/20 B65H 43/00 -43/08 H04N 1/00 H04N 1/04-1/207

Claims (1)

(57) [Claim 1] A loading detecting means for detecting a bundle of originals loaded on an original placing portion, and separating and transporting the original bundle of the original placing portion to a reading position; At this reading position, the conveying means for discharging the document whose image is read by the reading device at the reading position, and when the print mode is set, the document is temporarily stopped at the marking position between the reading position and the discharging position. Control means for controlling the transport means so as to perform printing, and printing means for printing a mark for indicating that reading has been completed on the image surface of the document temporarily stopped at the marking position when the printing mode is set; and A mounting portion on which the means is disposed is provided, and forms at least a part of the exterior of the apparatus main body, is supported by the apparatus main body so as to be openable and closable, and the printing means disposed on the mounting portion in the closed position with respect to the document Printable An automatic document feeder, comprising: an opening / closing cover supported by the printer; and a mode switching unit for setting one of the printing mode and the non-printing mode as an operation mode of the apparatus with respect to the control unit. Hippo to detect
And over detection knowledge unit, the printing mode is set the document transportable
A document is started to be conveyed from the document placing section by a feeding unit.
At the time, the detection signal from the cover detection means,
When it is determined that the open / close cover is in the non-closed position
Cancels the print mode and sets the non-print
An automatic document feeder, comprising: control means for setting a mode .