JP2010047350A - Printing device and paper discharge control method in printing device - Google Patents

Printing device and paper discharge control method in printing device Download PDF

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Publication number
JP2010047350A
JP2010047350A JP2008212001A JP2008212001A JP2010047350A JP 2010047350 A JP2010047350 A JP 2010047350A JP 2008212001 A JP2008212001 A JP 2008212001A JP 2008212001 A JP2008212001 A JP 2008212001A JP 2010047350 A JP2010047350 A JP 2010047350A
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JP
Japan
Prior art keywords
paper
paper discharge
printing
discharge tray
tray
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Pending
Application number
JP2008212001A
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Japanese (ja)
Inventor
Takahiko Nakamura
孝彦 中村
Original Assignee
Riso Kagaku Corp
理想科学工業株式会社
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Application filed by Riso Kagaku Corp, 理想科学工業株式会社 filed Critical Riso Kagaku Corp
Priority to JP2008212001A priority Critical patent/JP2010047350A/en
Publication of JP2010047350A publication Critical patent/JP2010047350A/en
Application status is Pending legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58Article switches or diverters
    • B65H29/60Article switches or diverters diverting the stream into alternative paths
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00Pile receivers
    • B65H31/24Pile receivers multiple or compartmented, e.d. for alternate, programmed, or selective filling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H43/00Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B65H43/02Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable detecting, or responding to, absence of articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H43/00Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B65H43/06Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable detecting, or responding to, completion of pile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimension; Position; Number; Identification; Occurence
    • B65H2511/10Size; Dimension
    • B65H2511/15Height
    • B65H2511/152Height of stack
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimension; Position; Number; Identification; Occurence
    • B65H2511/50Occurence
    • B65H2511/515Absence
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00Dynamic entities; Timing aspect
    • B65H2513/40Movement
    • B65H2513/42Route, path
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00Application field
    • B65H2801/03Image reproduction devices
    • B65H2801/06Office-type machines, e.g. photocopiers

Abstract

<P>PROBLEM TO BE SOLVED: To perform a simple paper discharge control, and to use a discharge tray full with the paper, as a destination of the discharged paper again, in a printing device having a plurality of discharge trays. <P>SOLUTION: The printing device having a plurality of discharge trays includes: a paper sensor detecting that the stacked amount of paper has reached a predetermined amount, for each discharge tray; an empty sensor detecting that the paper is not stacked on the discharge tray, for each discharge tray; and a paper delivery control means setting a delivery tray used as a destination of the discharged paper. The paper discharge control means continues the printing if it is detected that the stacked amount of paper on the discharge tray used as a destination of the discharged paper has reached a predetermined amount during printing, by switching the destination of the discharged paper to the other discharge tray in which it is detected that the paper is not stacked on the tray at the time, and on which the paper is stacked in such a manner that the printing surface thereof is in the same direction as that of the paper stacked on the discharge tray that has been used as a destination of the discharged paper. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to paper discharge control in a printing apparatus having a plurality of paper discharge trays.

Printing devices having a plurality of paper discharge trays are widely used. As described in Patent Document 1, in a printing apparatus including a plurality of paper discharge trays, when a paper discharge tray serving as a paper discharge destination becomes full during printing, another paper discharge is performed. Printing is continued by taking over the paper discharge in the tray.
JP 2003-326810 A

  In general, there are two types of output trays: a face-up output tray in which sheets are stacked face-up and a face-down output tray in which sheets are stacked face-down. There is a risk that the order of the order will be inconsistent. In order to avoid this, as described in Patent Document 1, if the printing order is adjusted when switching the paper discharge tray, the control becomes complicated. Conventionally, it has not been considered to use a paper discharge tray once full of paper as a paper discharge destination again.

  The present invention has been made in view of such a situation. In a printing apparatus having a plurality of paper discharge trays, simple paper discharge control is performed and a paper discharge tray in which a full sheet is generated is discharged again. The purpose is to make it available as a destination.

  In order to solve the above-described problem, the printing apparatus according to the first aspect of the present invention is a printing apparatus including a plurality of paper discharge trays, and a stacking amount of sheets reaches a predetermined amount for each of the paper discharge trays. A paper sensor for detecting this, an empty sensor for detecting that no paper is stacked for each paper discharge tray, and a paper discharge control means for setting a paper discharge tray to be used as a paper discharge destination. When the control unit detects that the paper stacking amount has reached a predetermined amount in the paper discharge tray used as the paper discharge destination during printing, it detects that the paper is not stacked at that time. It is possible to continue printing by switching the paper discharge destination to another paper discharge tray in which the print surface is the same direction as the paper discharge tray used as the paper discharge destination and the paper is stacked. Features.

  According to the present invention, when a full sheet occurs, the discharge destination is switched to another discharge tray on which sheets are stacked with the same print surface as the discharge tray used as the discharge destination. It is not necessary to adjust the printing order when switching the paper tray. Therefore, paper discharge control is simplified. In addition, in order to switch the paper discharge destination to the paper discharge tray where it is detected that the paper is not stacked when the paper full occurs, the paper is temporarily removed from the paper discharge tray that has become full. The paper discharge tray where the paper is full can be used again as a paper discharge destination.

  Here, the paper discharge control means is a paper discharge tray that detects that no paper is loaded at that time, and the paper discharge tray used as the paper discharge destination has the same print surface as the paper surface. When there is no other paper discharge tray on which is stacked, printing can be temporarily stopped.

  The printer further includes a print setting acquisition unit that acquires a print setting including setting of a discharge destination and selection of whether or not to perform continuous discharge, and the discharge control unit is configured to specify a specific discharge destination as the print setting. If no paper discharge tray is set and continuous paper discharge is selected, printing starts from the paper discharge tray with the larger number of paper discharge trays with the same print side and stacking paper. The paper discharge destination at the time may be set. When the paper discharge tray that is the paper discharge destination is full, the print side is the same orientation so that the paper is transferred to the other paper output tray where the paper is loaded with the same orientation. This is because the more paper discharge trays on which sheets are stacked, the higher the possibility that paper discharge can be taken over.

  In order to solve the above problems, a paper discharge control method for a printing apparatus according to a second aspect of the present invention is a paper discharge control method for a printing apparatus having a plurality of paper discharge trays. When it is detected that a paper stack amount has reached a predetermined amount in a paper discharge tray used as a paper tip, the paper discharge tray detects that paper is not stacked at that time. Printing is continued by switching the paper discharge destination to another paper discharge tray on which paper is stacked with the same print surface as the paper discharge tray used as the paper destination.

  Here, during printing, if it is detected that the paper stacking amount has reached a predetermined amount in the paper discharge tray used as the paper discharge destination, it is detected that no paper is stacked at that time. If there is no other paper output tray that has the same print surface as the paper output destination and the side to be printed and is loaded with paper, do not switch the paper output destination. Printing can be paused.

  Also, before starting printing, a print setting including setting of a discharge destination and selection of whether or not to perform continuous discharge is acquired, and a specific discharge tray is not set as a discharge destination as the print setting. If continuous paper discharge is selected, the paper discharge destination at the start of printing is set from the paper discharge tray having the same print surface in the same direction and a larger number of paper discharge trays. You may do it.

  According to the present invention, in a printing apparatus including a plurality of paper discharge trays, simple paper discharge control is performed, and a paper discharge tray in which a full sheet is generated can be used again as a paper discharge destination.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating an example of a configuration of a printing system according to the present embodiment. As shown in the figure, the printing system includes a printing apparatus 10 and a personal computer (PC) 20 that functions as a printing control apparatus. The connection form between the printing apparatus 10 and the PC 20 is typically a LAN (Local Area Network) connection in which a plurality of PCs 20 share the printing apparatus 10, but the printing apparatus 10 and a personal computer (PC). 20 may be a local connection in a one-to-one connection.

  The printing apparatus 10 includes a plurality of sheet feeding apparatuses that differ in the number of sheets that can be fed and a plurality of paper discharge trays. In addition to the printer function for performing printing based on the print data sent from the PC 20, the printing apparatus 10 has a copy function for performing copy printing by reading an image of a document placed on a document table.

  A printer driver program developed for the printing apparatus 10 is installed in the PC 20, and the printer driver unit 210 is formed when the CPU of the PC 20 executes this program. When the printer driver unit 210 operates, the PC 20 functions as a print control apparatus.

  The printer driver unit 210 generates print data such as a document to be printed based on an instruction from the user and outputs the print data to the printing apparatus 10. In order to perform this process, the printer driver unit 210 includes a print condition setting unit 211 and a print data generation unit 212. The print condition setting unit 211 receives settings of print conditions such as print quality, number of printed sheets, paper size, paper type, paper feed device designation, paper discharge tray designation, and the like from the user. The print data generation unit 212 generates print data based on the document designated as the print target and the print condition setting received by the print condition setting unit 211, and outputs the print data to the printing apparatus 10.

  FIG. 2 is a diagram illustrating the configuration of the paper supply / discharge mechanism and the printing mechanism of the printing apparatus 10. As shown in the figure, the printing apparatus 10 includes a paper feed table 320a, a first paper feed tray 320b, a second paper feed tray 320c, a third paper feed tray 320d, and a fourth paper feed tray 320e as a paper feed mechanism. As a paper discharge mechanism, a face-down paper discharge tray 330a, a first face-up paper discharge tray 330b, a second face-up paper discharge tray 330c, and a third face-up paper discharge tray 330d are provided.

  The printing apparatus 10 performs printing on the printing paper fed from one of the paper feeding mechanisms by the print head 312 and discharges the paper to one of the paper discharge trays. The face-down paper discharge tray 330a is disposed on the upper surface side of the printing apparatus 10 and is at a position half rotated with respect to the print head 312, and is discharged in a face-down state with the print surface down. The first face-up paper discharge tray 330b, the second face-up paper discharge tray 330c, and the third face-up paper discharge tray 330d are arranged on the side surface of the printing apparatus 10 and are on the transport direction side during printing. The paper is discharged face up with the face up.

  As described above, in the present embodiment, the printing apparatus 10 includes one paper discharge tray that is discharged face-down and three paper discharge trays that are discharged face-up. Since the printed sheets are stacked on top of each other, in order to obtain a print result in which the printed surfaces are arranged in the page order, printing is performed in the page order when paper is ejected from the paper ejection tray that is ejected face down. If the paper is discharged from the paper discharge tray that is discharged face-up, it is necessary to print in the reverse order of the pages. A plurality of paper discharge trays for discharging face down may be provided. Further, a post-processing device that performs stapling, punching, or the like on the printed paper may be disposed in front of the face-up paper discharge trays 330b to 330d.

  The printing apparatus 10 includes, as a printing mechanism, a print head 312 that extends in a direction orthogonal to the paper conveyance direction and has a large number of nozzles. The print head 312 is independent for each ink color, and black or color ink is ejected from each print head to perform color printing in line units.

  In addition, the printing apparatus 10 includes a control unit 110 including a controller board on which a CPU, a memory, and the like are arranged, an image reading unit 130 that reads an image of a document placed on a document table, and an operation panel that receives an operation from a user. Unit 150 and other functional units (see FIG. 3).

  The printing paper fed one by one from one of the paper feed mechanisms is fed into a paper feed system conveyance path (path indicated by a thick black line in the figure) by a drive mechanism such as a roller constituting the conveyance drive unit 350. And is guided to the resist portion Rg. Here, the registration portion Rg is provided to perform alignment and skew correction of the leading edge of the printing paper, and includes a pair of registration rollers. The fed printing paper is temporarily stopped at the registration unit Rg and conveyed toward the printing mechanism at a predetermined timing.

  The printing paper is image-formed line by line with the ink ejected from the printing head 312 while being conveyed at a speed determined by printing conditions by an annular conveying belt 352 provided on the opposite surface of the printing head 312.

  When the printing paper on which the upper surface is printed is discharged to the third face-up discharge tray 330d, it is conveyed by the switching mechanism 382 in the direction of the third face-up discharge tray 330d, and the print surface is faced up. Are discharged and stacked on the third face-up discharge tray 330d. When the paper is discharged to the second face-up paper discharge tray 330c, it is conveyed by the switching mechanism 383 in the direction of the second face-up paper discharge tray 330c, and discharged as it is with the printing surface facing up. Stacked on the tray 330c. When paper is discharged to the first face-up paper discharge tray 330b, it is conveyed in the direction of the first face-up paper discharge tray 330b by the switching mechanism 384, and is discharged as it is with the printing surface facing up. It is loaded on the tray 330b.

  When paper is discharged to the face-down paper discharge tray 330a, it is further transported inside the housing by a driving mechanism such as a roller. Then, the switching mechanism 386 guides and discharges the paper in the direction of the face-down paper discharge tray 330a and stacks the paper on the face-down paper discharge tray 330a with the printing surface facing down.

  Each paper discharge tray has a tray shape protruding from the housing, and has a certain thickness. In addition, each paper discharge tray is inclined so that the printed paper that has been discharged is naturally arranged and overlapped in the process of sliding along the inclination by the wall formed at the lower position of the inclination. It has become.

  The face-down discharge tray 330a, the first face-up discharge tray 330b, the second face-up discharge tray 330c, and the third face-up discharge tray 330d have a predetermined number of sheets that can be stacked. A paper full sensor 332a, a paper full sensor 332b, a paper full sensor 332c, and a paper full sensor 332d for detecting that the amount reaches a predetermined amount near the number of sheets that can be stacked are provided in each paper discharge tray. That is, the paper full state means that the print paper stack amount has reached a predetermined amount near the stackable number of sheets. Each paper discharge tray is provided with a tray empty sensor 334a, a tray empty sensor 334b, a tray empty sensor 334c, and a tray empty sensor 334d for detecting whether or not the paper discharge tray is empty.

  For double-sided printing, which prints on both sides of the printing paper, the front side (the first printed side is called “front side”, and the side that is printed next in double-sided printing is called “back side”) Without being guided to the paper discharge tray, the switching mechanism 386 further conveys the inside of the housing. Then, it is drawn into the switchback route SR and performs switchback, and the front and back are reversed with respect to the conveyance route. After reversing the front and back, it is guided again to the registration portion Rg by a driving mechanism such as a roller and temporarily stops. Thereafter, the sheet is conveyed toward the printing mechanism at a predetermined timing.

  In double-sided printing, the back side is printed using the same procedure as the front side, and printing paper with images formed on both sides is placed in one of the paper discharge trays according to the specification of the paper discharge port included in the printing conditions. Paper is discharged and stacked.

  In the printing apparatus 10, switchback for paper reversal is performed using the space provided in the face-down paper discharge tray 330a. The space provided in the face-down paper discharge tray 330a is configured to be covered so that the printing paper cannot be removed from the outside during switchback. As a result, it is possible to prevent the user from accidentally pulling out the printing paper during the switchback operation. Further, the face-down paper discharge tray 330a is originally provided in the printing apparatus 10, and the switch-back is performed using the space in the face-down paper discharge tray 330a, so that the printing apparatus 10 can be separately provided. It is not necessary to provide a switchback space. Therefore, an increase in the size of the housing can be prevented. Furthermore, since the face-down paper discharge tray 330a and the switchback path are not shared, the switchback process and the discharge of other sheets can be performed in parallel.

  FIG. 3 is a block diagram illustrating a functional configuration of the printing apparatus 10 according to the present embodiment. As shown in the figure, the printing apparatus 10 includes a control unit 110, a communication processing unit 120, an image reading unit 130, an operation panel unit 150, a print execution unit 310, a paper feed unit 320, a paper discharge unit 330, and a conveyance drive unit 350. It has.

  The communication processing unit 120 performs protocol processing corresponding to the connection form in order to communicate with the PC 20. For example, in the case of LAN connection, communication processing by TCP / IP is performed. Further, the communication processing unit 120 receives print data that is image information from the PC 20 that is one of the input sources of image information.

  The image reading unit 130 is one of input sources of image information, and includes a document table, a light receiving element, a light source, a lens, a scanning mechanism, and the like, and reads image data of a document placed on the document table and converts it into an electrical signal. Then, a process of outputting the image information to the control unit 110 is performed. The image reading unit 130 may be installed in the printing apparatus 10 or may be installed outside the printing apparatus 10.

  The print execution unit 310 is a mechanism for forming an image on a print sheet using an image forming medium. In this embodiment, the print execution unit 310 performs printing by ejecting ink line by line from a print head 312 having a width that covers the print sheet. Inkjet mechanism is adopted. However, as an image forming medium, a serial type ink jet mechanism or a laser type printing mechanism using toner or the like may be employed.

  As shown in FIG. 2, the paper feed unit 320 for supplying printing paper includes a paper feed stand 320a exposed to the outside, a gantry-type first paper feed tray 320b, a gantry-type second paper feed tray 320c, and a gantry-type. The third paper feed tray 320d and the gantry-type fourth paper feed tray 320e are provided. A plurality of printing sheets can be set in each sheet feeding mechanism in a stacked state. The size of A4, B5, etc. and the type of paper such as plain paper, inkjet paper, etc. are defined for the printing paper, and printing paper of the same size and the same paper type is set in one paper feeding mechanism. To. Each paper feed mechanism is provided with a paper feed sensor so that paper out can be detected.

  The paper discharge unit 330 for stacking the discharged printed printing paper includes a plurality of paper discharge trays. In the present embodiment, as shown in FIG. 2, a face-down discharge tray 330a, a first face-up discharge tray 330b, a second face-up discharge tray 330c, and a third face-up discharge tray 330d are provided. .

  Each paper discharge tray is provided with a paper full sensor 332 (see FIG. 2) and a tray empty sensor 334 (see FIG. 2). The paper full sensor 332 detects that the print paper loaded on the paper discharge tray 330 has reached a predetermined amount near the number of sheets that can be stacked. The tray empty sensor 334 detects whether or not the paper discharge tray 330 is empty. The paper full sensor 332 detects, for example, the weight of the stacked printing paper, or by detecting the stacked height by reading reflected light to determine whether or not the stacked printing paper has reached a predetermined amount. Can do. Alternatively, by counting the number of discharged sheets, it can be determined whether or not the stacked print sheets have reached a predetermined amount. The tray empty sensor 334 can determine, for example, whether the paper discharge tray is empty by reading reflected light.

  The conveyance drive unit 350 is a drive mechanism that conveys printing paper, and includes a motor and the like. Further, a transport belt 352 that functions as a transport mechanism at the time of transporting printing paper at a predetermined print transport speed at the time of printing is provided at a position facing the print head 312. Further, there are provided a plurality of switching mechanisms (see FIG. 2) for switching the conveyance path to guide the printing paper to the paper discharge tray used for paper discharge.

  The control unit 110 includes a CPU, a memory, an image processing device, and the like. When these devices perform processing, the operation panel control unit 111, the paper feed control unit 113, the paper discharge control unit 114, and the transport control unit are performed. 115, an image processing unit 116, and an ejection processing unit 117 are formed.

  The operation panel control unit 111 performs processing for interpreting a screen displayed on the operation panel unit 150 and a user operation input via the operation panel unit 150. The paper feed control unit 113 sets a paper feed mechanism that feeds the print paper used for printing according to the printing conditions, and performs control for taking the print paper from the paper feed mechanism into the transport driving unit 350 at a predetermined timing. The paper discharge control unit 114 sets a paper discharge tray as a paper discharge destination for printed printing paper according to printing conditions. Then, the conveyance control unit 115 is notified of the set discharge tray so that the printing paper is discharged from the set discharge tray. Further, when the paper discharge tray 330 serving as a paper discharge destination becomes full, the paper discharge tray 330 that takes over the paper discharge is set as necessary.

  The conveyance control unit 115 controls the sheet conveyance in the conveyance driving unit 350 including the conveyance belt 352 and other driving mechanisms. Specifically, a transport speed and a transport path are set, and a control signal is output to the transport drive unit 350 so as to transport the paper according to the settings. The transport speed is determined by printing conditions such as print quality and paper type, and the transport path is determined by a set paper feed mechanism, a set paper discharge tray, double-sided print settings, and the like.

  The image processing unit 116 converts the RGB format print data into the CMYK format, and further converts the image data into image data that can be interpreted by the print execution unit 310. The image data is data indicating the number of ink drops in dot units, for example. The discharge processing unit 117 controls ink discharge processing in the print head 312 based on the image data.

  FIG. 4 is a block diagram illustrating a configuration of the paper discharge control unit 114 which is a characteristic functional unit of the present embodiment. As shown in the drawing, the paper discharge control unit 114 includes a paper discharge setting unit 1141, a printing condition acquisition unit 1142, and a paper discharge tray state acquisition unit 1143.

  The paper discharge setting unit 1141 sets a paper discharge tray to be used as a paper discharge destination when “Auto” is selected as a paper discharge destination setting by the user. In addition, when the paper discharge tray being used becomes full during printing, a paper discharge tray that takes over the paper discharge is set as necessary.

  Specifically, when continuous printing is instructed by the user, a paper discharge tray that has the same face method as the paper discharge tray that is full of paper and has no paper loaded is discharged. Is set as the paper discharge destination.

  The print condition acquisition unit 1142 acquires the discharge destination setting and the setting related to continuous discharge from the print condition set on the PC 20 or the print condition set on the operation panel unit 150 and notifies the discharge setting unit 1141 To do. The discharge tray state acquisition unit 1143 acquires the detection result of the paper full sensor 332 and the detection result of the tray empty sensor 334 of each discharge tray 330 and notifies the discharge setting unit 1141 of the detection result.

  Next, a basic print processing procedure of the printing apparatus 10 will be described. As described above, the printing apparatus 10 is provided with a copy function for reading and copying an image in addition to a printer function for performing printing based on print data sent from the PC 20. Therefore, a printing procedure corresponding to each function is performed.

  That is, when print data is received as image information from the PC 20, the print processing unit 116 performs processing for expanding the received print data into image data, and the print execution unit 310 performs print processing. In this case, setting of printing conditions is performed by the printer driver unit 210 of the PC 20.

  When a copy operation is received from the user via the operation panel unit 150, the image reading unit 130 performs image reading processing of the document placed on the document table, and the print execution unit 310 converts the image data as image reading information into image data. A printing process based on this is performed. In this case, the printing conditions are set by the operation panel unit 150 and the operation panel control unit 111.

  Next, a printing condition setting process when printing is performed by the printing apparatus 10, particularly a discharge destination setting process will be described. When printing by the printing apparatus 10, the user can set printing conditions such as paper size, paper type, number of copies, paper discharge destination, etc. prior to printing. The printing conditions are set by the printer driver unit 210 of the PC 20 when printing is performed using the printer function, and the operation panel unit 150 and the operation panel control unit of the printing apparatus 10 are used when printing is performed using the copy function. 111.

  The setting of the paper discharge tray (paper discharge destination) will be described with reference to FIG. FIG. 5 shows an example of a print condition setting screen 510 when print conditions are set by the printer driver unit 210 of the PC 20. In the printing condition setting screen 510, the setting items are classified into menu pages such as “basic”, “layout”, and “finishing”, and the discharge destination can be selected on the menu page related to “finishing”. The selection of the destination can be set by a pull-down format discharge destination selection menu 511.

  Here, in the pull-down format discharge destination selection menu 511, as shown in FIG. 6, “face-down discharge tray”, “first face-up discharge tray”, “ “Auto” can be selected in addition to the “second face-up paper discharge tray” and the “third face-up paper discharge tray”. When the user wants to designate a specific paper discharge tray, the “face-down paper discharge tray”, “first face-up paper discharge tray”, “second face-up paper discharge tray”, and “third face-up paper discharge tray” are selected. If any one is selected and the selection of the paper discharge tray is left to the printing apparatus 10, "Auto" may be selected. Note that when displaying this menu, the printer driver unit 210 can communicate with the printing apparatus 10 and acquire information on the usable paper discharge tray.

  In addition, the user can set whether or not to perform continuous paper discharge in the continuous paper discharge setting column 512. Here, the continuous paper discharge is a paper discharge method in which paper discharge is handed over to another paper discharge tray having the same face direction when the paper discharge tray being used becomes full. Here, the face direction is face-up or face-down.

  That is, in this embodiment, for example, when the first face-up paper discharge tray 330b is a paper discharge destination and the first face-up paper discharge tray 330b becomes full, the second face direction is the same. Paper discharge can be taken over to either the face-up paper discharge tray 330c or the third face-up paper discharge tray 330d. When the taken-out paper discharge tray becomes full, it can be taken over to another paper discharge tray having the same face direction. At this time, when the first face-up discharge tray 330b is full and released, the first face-up discharge tray 330b can be used again as a discharge destination.

  For this reason, if it is set to perform continuous paper discharge, printing continues by discharging paper from other paper discharge trays in the same face direction that can be discharged when the paper discharge tray in use is full. If the setting is not to perform continuous paper discharge, a paper discharge error occurs and the printing process is temporarily stopped when the paper discharge tray being used becomes full. However, even if it is set to perform continuous paper discharge, if there is no paper discharge tray in the same face direction that can be discharged, a paper discharge error occurs and the printing process is temporarily stopped.

  If the user wants to continue printing by discharging paper to another paper output tray even when the paper output tray is full, the user can set continuous paper discharge and use the When the paper tray is full, if it is desired to avoid the printing result from being distributed to a plurality of paper discharge trays, it is possible not to set continuous paper discharge.

  The setting of whether or not to perform continuous paper discharge is applied both when a specific paper discharge tray is designated and when “Auto” is selected. In other words, when setting to perform continuous paper discharge, whether the specific paper tray is specified or “Auto” is selected, the paper discharge tray being used is full. Then, the paper discharge is taken over to another paper discharge tray in the same face direction in which paper can be discharged.

  FIG. 7 shows an example of a paper discharge destination setting screen 150a displayed on the operation panel unit 150 when setting the paper discharge destination on the operation panel unit 150 of the printing apparatus 10 when printing is performed using the copy function. Yes. In this example, the button group 151 is used to select a discharge destination for copy printing from the “face-down discharge tray”, “first face-up discharge tray”, “second face-up discharge tray”, and “third face-up discharge tray”. Either “paper tray” can be selected. In addition, it is possible to set whether or not to perform continuous paper discharge from the button group 152. Any setting contents are the same as when the printing conditions are set by the printer driver unit 210 of the PC 20.

  Next, the discharge control of the printing apparatus 10 at the time of printing will be described with reference to the flowchart of FIG.

  When a print execution instruction is received from the user, the print condition acquisition unit 1142 of the discharge control unit 114 acquires the print conditions set by the user, and the discharge setting unit 1141 sets the discharge destination based on the print conditions ( S101).

  FIG. 9 is a flowchart for explaining details of processing for setting a paper discharge destination. As shown in the drawing, in the paper discharge destination setting process, first, it is determined whether or not “Auto” is selected as the paper discharge destination set as the printing condition (S1011).

  As a result, when “Auto” is not selected as the paper discharge destination (S1011: No), a specific paper discharge tray is specified, and thus the specific paper discharge specified according to the user's instruction is performed. The tray is set as the paper discharge destination (S1012). That is, according to a user instruction, any one of the face-down discharge tray 330a, the first face-up discharge tray 330b, the second face-up discharge tray 330c, and the third face-up discharge tray 330d is set as a discharge destination. To do.

  On the other hand, when “Auto” is selected as the paper discharge destination (S1011: Yes), it is further determined whether or not “continuous paper discharge” is set (S1013). If “continuous discharge” is not set (S1013: No), the face-down discharge tray 330a is set as the discharge destination (S1014). This is because if the paper is discharged to the face-down paper discharge tray 330a, the print result in the page order can be obtained by performing the print in the page order, so that the time until the start of printing can be shortened.

  If “continuous paper discharge” is set (S1013: Yes), a paper discharge tray with many same face directions is set as a paper discharge destination (S1015). This is because, when “Continuous paper discharge” is set, when the paper discharge tray that is the paper discharge destination becomes full, the paper is taken over to another paper discharge tray in the same face direction. This is because the possibility of handing over the paper discharge increases when there are more paper discharge trays in the same face direction. In this embodiment, since there is one face-down paper discharge tray and three face-up paper discharge trays, one of the face-up paper discharge trays is set as a paper discharge destination.

  The priority order of the first face-up discharge tray 330b, the second face-up discharge tray 330c, and the third face-up discharge tray 330d, which are face-up discharge trays, is set in advance. Make it fixed. For example, the priority order may be determined in descending order of maximum loading capacity.

  When the paper discharge destination is set, the page printing order is set according to the face direction of the paper discharge destination (S102). That is, when the face-down paper discharge tray is set, the print order is set in the order of pages, and when the face-up paper discharge tray is set, the print order is set in the reverse order of the pages.

  Then, according to the printing order, paper feed, image formation, and paper discharge printing processes are performed (S103). When printing of all pages to be printed is completed (S104: Yes), the printing process is terminated.

  If printing has not been completed (S104: No), it is determined whether the paper full sensor 332 of the paper discharge tray 330 serving as the paper discharge destination has detected full paper (S105). If the full sheet is not detected (S105: No), the paper feed / image formation / paper discharge printing process is repeated (S103).

  On the other hand, when the paper full sensor 332 of the paper discharge tray 330 serving as the paper discharge destination detects that the paper is full (S105: Yes), it is determined whether continuous paper discharge is set (S106). If the continuous discharge is not set (S106: No), the user does not want to take over the discharge destination, so printing is temporarily stopped as a discharge error due to the occurrence of full paper (S109).

  When continuous paper discharge is set (S106: Yes), the empty state of the paper discharge tray 330 at that time is acquired with reference to the tray empty sensor 334 (S107). That is, even if the paper discharge tray has become full in the past, the paper discharge tray from which the paper has been removed by the user is determined to be empty. For this reason, it can be used again as a paper discharge destination. Note that only the discharge tray in the same face direction as the discharge tray set as the discharge destination may be the acquisition target of the empty status.

  Then, it is determined from the acquired empty state of the paper discharge tray whether there is an empty paper discharge tray in the same face direction as the paper discharge destination where the paper is full (S108). If there is no empty paper discharge tray in the same face direction as the paper discharge destination that is full of paper (S108: No), there is no paper discharge destination that can take over the paper discharge, so printing as a paper discharge error due to the occurrence of paper full Is temporarily stopped (S109).

  If there is an empty paper discharge tray in the same face direction as the paper discharge destination that is full of paper (S108: Yes), the paper discharge tray is changed to a paper discharge destination (S110). When there are a plurality of empty paper discharge trays in the same face direction as the paper discharge destination that is full of paper, the paper discharge destination is set according to a predetermined priority order. For example, the priority order may be determined in descending order of maximum loading capacity.

  Then, paper discharge, image formation, and paper discharge printing processing are continued by discharging paper to the changed paper discharge destination (S103). As described above, according to the present exemplary embodiment, in order to set a paper discharge tray that takes over paper discharge depending on the empty state of the tray at the time when the paper is full, the paper discharge tray that has once become full is used again as a paper discharge destination. Will be able to.

  FIG. 10 is a diagram schematically illustrating how the discharge destination is set by the discharge control. Here, for the sake of simplicity, it is assumed that two face-up discharge trays, a “first face-up discharge tray” and a “second face-up discharge tray” are provided. In addition, it is assumed that continuous printing is set, the “first face-up discharge tray” is set as a discharge destination at the start of printing, and all the discharge trays are empty at the start of printing.

  Printing proceeds with the first face-up discharge tray as the discharge destination. As shown in FIG. 10A, when the paper full sensor of the first face-up discharge tray detects full paper, The tray empty sensor of the face-up discharge tray detects that the second face-up discharge tray is empty.

  Since the second face-up discharge tray has the same face direction as the first face-up discharge tray, the discharge is taken over by the second face-up discharge tray as shown in FIG. Will continue. Assume that the user removes all the sheets stacked on the first face-up paper discharge tray as shown in FIG. 10C while paper is being discharged to the second face-up paper discharge tray.

  Further, when printing progresses and the paper full sensor of the second face-up paper discharge tray set as the paper discharge destination detects full paper as shown in FIG. 10D, at that time, the first face-up discharge is performed. A tray empty sensor for the paper tray detects that the first face-up paper discharge tray is empty. That is, at the time shown in FIG. 10 (a), the first face-up paper discharge tray, which was full of paper, has been removed at the time shown in FIG. 10 (c). It can be used. However, if the sheet is once removed and then returned to the first face-up discharge tray, the first face-up discharge tray is not considered empty at this point.

  Since the first face-up paper discharge tray has the same paper discharge direction as the second face-up paper discharge tray, the paper is taken over by the first face-up paper discharge tray as shown in FIG. Will continue. In this way, continuous printing can be executed.

1 is a block diagram illustrating an example of a configuration of a printing system according to an embodiment. FIG. 4 is a diagram illustrating a paper feeding mechanism, a paper discharge tray, and a printing paper conveyance path of the printing apparatus. FIG. 2 is a block diagram illustrating a functional configuration of a printing apparatus according to the present embodiment. 3 is a block diagram illustrating a configuration of a paper discharge control unit. FIG. FIG. 10 is a diagram illustrating an example of a print condition setting screen when a paper discharge destination is set by a printer driver unit of a PC. It is a figure explaining a paper feed destination selection menu. FIG. 10 is a diagram illustrating an example of a print condition setting screen when setting a discharge destination in the printing apparatus. 10 is a flowchart for explaining paper discharge control during printing. 10 is a flowchart for explaining a paper discharge destination setting process. FIG. 6 is a diagram schematically illustrating how a paper discharge destination is set.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Printing device 110 ... Control part 111 ... Operation panel control part 113 ... Paper feed control part 114 ... Paper discharge control part 115 ... Conveyance control part 116 ... Image processing part 117 ... Discharge processing part 120 DESCRIPTION OF SYMBOLS ... Communication processing part 130 ... Image reading part 150 ... Operation panel part 210 ... Printer driver part 211 ... Print condition setting part 212 ... Print data generation part 310 ... Print execution part 312 ... Print head 320 ... Paper feeding unit, 330 ... paper discharge unit, 330a ... face-down paper discharge tray, 330b ... first face-up paper discharge tray, 330c ... second face-up paper discharge tray, 330d ... third face-up paper discharge tray, 332 ... Paper full sensor, 334 ... tray empty sensor, 350 ... transport drive unit, 352 ... transport belt, 382 ... switching mechanism, 383 ... switching mechanism, 384 ... switching mechanism 386 ... switching mechanism

Claims (6)

  1. A printing apparatus having a plurality of paper discharge trays,
    A paper sensor for detecting that a paper stack amount has reached a predetermined amount for each paper discharge tray;
    An empty sensor for detecting that paper is not stacked for each of the paper discharge trays;
    Paper discharge control means for setting a paper discharge tray to be used as a paper discharge destination,
    The paper discharge control means
    When it is detected that the stacking amount of paper reaches a predetermined amount in the paper discharge tray used as the paper discharge destination during printing, the paper discharge tray detects that the paper is not stacked at that time. The printing is characterized in that printing is continued by switching the paper discharge destination to another paper discharge tray on which sheets are stacked with the same print surface as the paper discharge destination used as the paper discharge destination. apparatus.
  2. The printing apparatus according to claim 1,
    The paper discharge control means is a paper discharge tray that detects that no paper is stacked at that time, and the paper is stacked with the print surface in the same direction as the paper discharge tray used as the paper discharge destination. A printing apparatus that pauses printing when no other paper discharge tray exists.
  3. The printing apparatus according to claim 1,
    A print setting acquisition means for acquiring a print setting including setting of a discharge destination and selection of whether to perform continuous discharge;
    The paper discharge control unit is configured such that, as the print setting, when a specific paper discharge tray is not set as a paper discharge destination and continuous paper discharge is selected,
    A printing apparatus, wherein a paper discharge destination at the start of printing is set from a paper discharge tray having a larger number of paper discharge trays on which sheets are stacked with the same printing surface.
  4. A discharge control method in a printing apparatus having a plurality of discharge trays,
    When it is detected that the stacking amount of paper reaches a predetermined amount in the paper discharge tray used as the paper discharge destination during printing, the paper discharge tray detects that the paper is not stacked at that time. The discharge is characterized in that printing is continued by switching the discharge destination to another discharge tray on which sheets are stacked with the same print surface as the discharge tray used as the discharge destination. Paper control method.
  5. The paper discharge control method according to claim 4,
    During printing, if it is detected that the paper stack reaches the specified amount on the paper discharge tray used as the paper discharge destination, the paper is detected that no paper is loaded at that time. When there is no other paper discharge tray that has the same print surface as the paper discharge destination and where the print surface is stacked, the paper is temporarily printed without switching the paper discharge destination. A paper discharge control method characterized by stopping.
  6. The paper discharge control method according to claim 4,
    Before starting printing, get the print settings including the output destination setting and whether to perform continuous discharge,
    If the specific paper discharge tray is not set as the paper discharge destination as the print setting and the continuous paper discharge is selected, the print tray of the paper discharge tray on which the print surface is the same direction is stacked. A paper discharge control method, wherein a paper discharge destination at the start of printing is set from a paper discharge tray having a larger number.
JP2008212001A 2008-08-20 2008-08-20 Printing device and paper discharge control method in printing device Pending JP2010047350A (en)

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