JPH11208910A - Copier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize a necessary set work and shorten a copying time to the utmost, when a user appoints an OHP interleaving function. SOLUTION: This copier is provided with at least one OHP tray 22 which can set an OHP sheet, plural paper sheet trays 25, 26, 27 in which interleaving paper sheets can be set, a selection means for selecting the interleaving paper sheet tray in which the interleaving paper sheet with the same size as the size of OHP tray is stored and a first set means for setting in advance the use priority order for the interleaving of the paper sheet tray. The first set means selects and appoints a desired one from plural paper feed port priority order set program determined in advance the interleaf use priority order of the paper sheet tray and when plural paper sheet trays with the same size as the OHP tray size are detected by the selection means, by using the paper sheet tray selectively with the interleaf use priority order set in advance, the paper sheet with the same size as the paper sheet used as OHP can be set automatically as an interleaf.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying apparatus, and more particularly to a copying apparatus capable of automatically performing interleaving in copying an OHP sheet.

[0002]

2. Description of the Related Art In recent years, functions required of a copying apparatus have been diversified and complicated, and one of them is an OHP interleaving function.

[0003] The OHP interleaving function is mainly used when copying an original onto an OHP sheet used for an overhead projector (OHP), and when continuously copying onto a plurality of OHP sheets, the OHP sheet to be copied and discharged is used. This function automatically inserts (inserts) paper in between. The copying apparatus having this function executes the function in the following procedure. First, an OHP sheet is set in a predetermined sheet feeding port of the copying apparatus, and sheets having the same size and the same length and width are set in another sheet feeding port. Alternatively, another paper feed port containing paper to be used as an interleaf is selected and designated by key operation from the control panel. Next, when the OHP interleaving function is set by key operation from the control panel and the copy start key is pressed, the paper is first fed and discharged from the paper feeding port where the interleaving paper is inserted, and then the OHP is inserted.
The OHP sheet is fed and discharged from the sheet feeding port where the sheet is set. When there are a plurality of originals and the automatic original feeder is set in the copying apparatus, the above-described operation is continuously performed, and the slip sheet, the OHP sheet, the slip sheet,
An operation of discharging the sheet with the OHP sheet (Japanese Patent Laid-Open Publication No.
317078). FIG. 12 shows a conventional ODF using an ADF.
It is a flowchart of an HP slip sheet copy operation. In this control method, the timing of feeding the OHP sheet after feeding the paper for the slip sheet and the timing of switching the feed of the next sheet after the feeding of the OHP sheet are sent out earlier. The next sheet or sheet is not fed until the sheet or sheet passes through the sheet ejection sensor.

[0004]

However, in the above-mentioned conventional OHP interleaving function, the predetermined paper feeding port for setting the OHP sheet is limited to manual feed, and the paper feeding port for the interleaving paper is designated by a paper feeding port selection key. Was common. The paper size of the manual paper feed port is detected only in the paper width direction, and the length of the paper is detected to determine the paper size by using the function of measuring the paper passage time of the paper passage sensor during the copy operation. It is common to do. However, in such a configuration, even if the OHP sheet is manually set when the OHP interleaving function is designated by the user, a sheet having the same size as the OHP sheet is set unless a copy operation is performed. There was a problem that the function of automatically selecting a mouth could not be realized.

[0005] Therefore, use the instruction manual with a note stating "Please set the OHP sheet in the manual feed and specify the size" or "Please set the interleaf sheet to the same size as the OHP sheet". I was trying to do it.

In addition, when using this function, the user has to be very careful to take care not to mistake the setting direction of the OHP sheet with the paper size of the slip sheet. The instruction manual also states that "if a wrong paper size is selected, a paper jam will occur during the copying operation if a paper feed port containing paper larger than the OHP sheet is selected."

Further, some users copy special paper such as color paper or thick paper, including OHP sheets. When the OHP interleaving function is designated, paper is fed from the paper feeding port containing such special paper as interleaving paper. There was a problem that it would be troublesome to be done.

[0008] On the other hand, the instruction manual states that "if a wrong paper size is selected for a paper feed port containing paper larger than an OHP sheet, a paper jam will occur during a copy operation". As described above, when the copying operation is actually performed with this setting, there is a problem that the printing is stopped due to a paper jam.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a copying apparatus which can automatically perform an interleaving operation at the time of OHP sheet copying which is easy for a user to use. .

[0010]

In order to solve this problem, a copying apparatus according to the present invention comprises at least one OHP tray on which OHP sheets can be set, at least one interleaf paper tray on which interleaf paper can be set, and Selecting means for selecting an interleaf paper tray in which interleaf paper of the same size as the OHP tray is stored, and first setting means for presetting a priority order of use of the interleaf paper tray, The first setting unit is configured to execute a desired one from a plurality of paper supply port priority order setting programs in which the priority order of use of the slip sheet tray is determined in advance.
One of which is selected and designated by the selection means.
When a plurality of interleaf paper trays having the same size as the P tray are detected, the interleaf paper tray is selected and used in a preset use priority order.

Further, instead of the above-mentioned first setting means,
A second setting means for presetting the size of the interleaf paper tray having a higher use priority of the interleaf paper tray is provided, and the interleaf paper tray having the same size as the OHP tray on which the OHP sheet can be set by the selecting means is provided. When it is determined that there is no paper in the interleaf paper tray having the same size as the OHP tray, the interleaf paper tray having a higher use priority set in advance by the second setting means is selected. It was done. A third setting unit configured to prohibit selection of use of at least one of the plurality of interleaf paper trays;
Even if the OHP tray has the same size as the OHP tray, the interleaf paper tray for which the selection is prohibited is not selected.

Further, at least one OHP tray on which an OHP sheet can be set, at least one interleaf paper tray on which an interleaf paper can be set, and an interleaf paper having the same size as the OHP tray are accommodated. Selecting means for selecting a paper sheet tray, first setting means for presetting the priority order of use of the interleaving paper tray, and OHP interleaving function designating means for specifying an OHP interleaving function; When the OHP interleaving function is designated by the interleaving function designating means, the paper feeding information of the paper tray selected before that is reset, and the use priority order of the interleaving paper tray preset by the first setting means is set. The interleaf paper tray is selected according to the following.

Further, there is provided an interleaf paper tray selecting means capable of arbitrarily selecting and specifying an interleaf paper tray.
When the OHP interleaving function is designated by the OHP interleaving function designating means, the OHP tray cannot be selected by the paper tray selecting means. Further, when the size of the interleaving paper is different from the size of the OHP sheet in the copying operation by the OHP interleaving function, the OH
It is configured to detect that the rear end of the P sheet or the interleaf paper has been sent from the registration roller and to feed the interleaf paper or the OHP sheet.

An automatic document feeder, at least one OHP tray on which OHP sheets can be set, at least one interleaf paper tray on which interleaf paper can be set, and an interleaf having the same size as the OHP tray Selecting means for selecting an interleaf paper tray in which sheets are stored, first setting means for presetting the use priority order of the interleaf paper tray, and OHP interleaf function specifying means for specifying an OHP interleaf function OHP that has the OHP interleaf function specified
During the interleaf copy operation, when the use priority order is set in advance by the first setting means and there is no more paper in the interleaf paper tray being used, the used interleaf paper Another interleaf paper tray having paper of the same size as the tray size is automatically selected, and the OHP interleaf copy operation can be performed continuously without interruption.

FIG. 11 is a flowchart of a conventional OHP interleaf copy operation using an ADF. In such a control method, OHP interleaf and OHP sheet, OHP sheet and OH
There is a disadvantage that the productivity is reduced because the next sheet is not fed until the previously fed sheet passes through the paper ejection sensor at the timing of switching the feeding of the P interleaving sheet.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, at least one OH on which an OHP sheet can be set is provided.
P tray, at least one interleaf paper tray on which interleaf paper can be set, selecting means for selecting an interleaf paper tray containing interleaf paper of the same size as the OHP tray, and the interleaf paper First setting means for presetting the priority order of use of the trays, wherein the first setting means is provided by a plurality of paper feed port priority order setting programs in which the priority order of use of the slip sheet tray is predetermined. One is selected and designated, and when a plurality of interleaf paper trays of the same size as the OHP tray are selected by the selection means, the interleaf paper trays are selected and used in a preset use priority order. Since the use priority order of the interleaf paper tray can be selected and set in several ways,
When the HP interleaf function is designated, the interleaf paper tray to be used is automatically selected.

According to a second aspect of the present invention, at least one OHP tray on which OHP sheets can be set, at least one interleaf paper tray on which interleaf paper can be set,
Selecting means for selecting an interleaf paper tray in which interleaf paper of the same size as the OHP tray is stored; and a second means for presetting the size of the interleaf paper tray having a higher use priority of the interleaf paper tray It is determined that there is no paper in the interleaf paper tray of the same size as the size of the OHP tray or the size of the OHP tray on which the OHP sheet can be set by the selection means. In this case, the interleaf paper tray having a higher use priority set in advance by the second setting means is selected, and only by setting an OHP sheet and designating the OHP interleaf function, a predetermined Even if there is no paper in the interleaving paper tray, the next interleaving paper tray is automatically selected according to the priority selection order. Therefore, a simple operation, such as simply giving an operation start instruction, is sufficient.

According to a third aspect of the present invention, there is provided at least one OHP tray on which OHP sheets can be set, at least one interleaf paper tray on which interleaf paper can be set,
Selecting means for selecting an interleaf paper tray in which interleaf paper of the same size as the OHP tray is stored; first setting means for presetting the use priority order of the interleaf paper tray; A third setting unit configured to prohibit selection of use of at least one interleaving paper tray among paper paper trays, wherein the selection is prohibited even if the size is the same as the OHP tray. The interleaf paper tray is not selected, and even if special paper such as color paper or thick paper is set in the predetermined interleaf paper tray for which automatic selection is prohibited, the special paper is inadvertently used as OHP interleaf. Has the effect that it can be prevented from being used.

According to a fourth aspect of the present invention, there is provided at least one OHP tray on which OHP sheets can be set, at least one interleaf paper tray on which interleaf paper can be set,
Selecting means for selecting an interleaf paper tray in which interleaf paper of the same size as the OHP tray is stored; first setting means for presetting a priority order of use of the interleaf paper tray; OHP interleaf function designating means for designating a function. When the OHP interleaf function is designated by the OHP interleaf function designating means, the paper feed information on the paper tray selected before that is reset, and the 1 is selected in accordance with the priority order of use of the interleaving paper trays set in advance by the setting means, and the paper tray previously used for normal copying is replaced by the next OHP paper tray. When used in the interleaving function, an effect of preventing an unintentional copy from being mistakenly made with the paper tray set to be used immediately before is provided.

According to a fifth aspect of the present invention, at least one OHP tray on which OHP sheets can be set, at least one interleaf paper tray on which interleaf paper can be set,
Selecting means for selecting an interleaf paper tray in which interleaf paper of the same size as the OHP tray is stored; first setting means for presetting a priority order of use of the interleaf paper tray; An OHP interleaf function designating means for designating a function and an interleaf paper tray selecting means capable of arbitrarily selecting and specifying an interleaf paper tray are provided, and the OHP interleaf function is designated by the OHP interleaf function designation means. Then, the OHP tray cannot be selected by the paper tray selecting means.
This has the effect of preventing the user from erroneously selecting a tray and performing a copying operation such as using an OHP sheet for interleaving paper.

According to a sixth aspect of the present invention, at least one OHP tray on which OHP sheets can be set, at least one interleaf paper tray on which interleaf paper can be set,
Selecting means for selecting an interleaf paper tray in which interleaf paper of the same size as the OHP tray is stored; first setting means for presetting a priority order of use of the interleaf paper tray; An OHP interleaf function designating means for designating a function; and an interleaf paper tray selecting means capable of arbitrarily selecting and specifying an interleaf paper tray. If the size of the OHP sheet is different from the size of the OHP sheet, it is detected that the rear end of the OHP sheet or the interleaf paper has been sent out from the registration rollers, and the interleaf paper or the OHP sheet is fed. Has the effect of shortening the paper interval at the time of copying, and improving the copy productivity at the time of continuous copying of a plurality of sheets.

According to a seventh aspect of the present invention, there is provided an automatic document feeder and at least one O which can set an OHP sheet.
An HP tray, at least one interleaf paper tray on which interleaf paper can be set, selecting means for selecting an interleaf paper tray containing interleaf paper of the same size as the OHP tray, and the interleaf paper A first setting means for setting the priority order of use of the tray in advance, and an O for designating the OHP interleaving function
HP interleaf copy function designating means, and during the OHP interleaf copy operation in which the OHP interleaf function is designated,
When the use priority order is set in advance by the first setting means and there is no more paper in the interleaf paper tray being used, another paper having the same size as that of the used interleaf paper tray is present. The OHP interleaving copy operation is automatically selected, and the OHP interleaving copy operation can be performed continuously without interruption. If the paper in the interleaf paper tray used by the first setting means is set in advance and the used interleaf paper tray runs out, the same size as the used interleaf paper tray is used. This has the effect that another interleaving paper tray with paper can be automatically selected and the OHP interleaving copy operation can be performed continuously without interruption.

An embodiment of the present invention will be described below with reference to the drawings. The present embodiment is applied to a copying machine, and includes a copying machine main body and an optional automatic document feeder (hereinafter abbreviated as ADF) mounted on the copying machine main body.

The main body of the copying machine has a plurality of paper feed ports. At least one of the paper feed ports can set an OHP sheet, and performs a copy operation under the conditions set by the control panel.

As shown in FIG. 1, the copying machine has an optional ADF 2 attached to the copying machine main body 1 and controls the entire copying machine including the options in accordance with the copy condition specified by the control panel 3.
The document sent by the ADF 2 is read, image processing is performed on a sheet or an OHP sheet supplied from a set sheet feeding port, and the sheet is conveyed and discharged to a sheet discharge tray 4.

The ADF 2 is provided with a document tray 5 on which documents are placed, and the placed documents are sent out one by one to the platen glass 6 of the copying machine body 1 by copy start.

Next, the configuration of the copying machine body 1 will be described with reference to FIG. A photosensitive drum 7 is arranged inside the copying machine main body 1. The photosensitive drum 7 is rotated in a direction indicated by an arrow at the time of operation by a drive mechanism (not shown) on a shaft of the photosensitive drum 7. Around the outer periphery of the photosensitive drum 7, a discharging lamp 8, a charger 9, a developing unit 10, a transfer / separation charger 11, an LED
An array 12 and a cleaning blade 13 are arranged. The LED array 12 is for removing a latent image formed on the photosensitive drum 7 so as not to transfer an unnecessary image to copy paper.

After the photosensitive drum 7 is uniformly charged by the discharge lamp 8 as it rotates in the direction of the arrow, the original reading light is irradiated from the optical unit 14 to form an electrostatic latent image on the photosensitive drum 7. . The optical unit 14 includes a platen glass 6 for placing a document, an exposure lamp 15 for illuminating the document, an exposure lamp unit driving mechanism (not shown) for moving the exposure lamp 15 to irradiate the entire surface of the document, and an exposure lamp 15. A plurality of mirrors-1 for transmitting the reflected light of the original surface irradiated with light to the photosensitive drum 7
6, 17, 18 and the optical lens 19 are arranged.

Light irradiation is performed as shown in FIG.
Is applied as a document reading light to the photosensitive drum 7 via the document, mirrors 16 and 17, the optical lens 19 and the mirror 18. The photosensitive drum 7 on which the electrostatic latent image has been formed in this manner is developed by the developing unit 10 thereafter.
The toner image formed on the photosensitive drum 7 by this development is transferred to a copy sheet fed from a sheet feeding unit by a transfer / separation charger 11, heat-fixed by a fixing unit 20, and then discharged by a sheet discharging roller 21. The paper is discharged to the paper discharge tray 4.

On the other hand, the toner remaining on the photosensitive drum 7 without being transferred by the cleaning blade 13 is scraped off, that is, the photosensitive drum 7 is cleaned and reused.

The paper feed unit for setting copy paper includes a manual feed tray 22, a manual feed roller 23, a registration roller 2
4. paper feed cassettes 25, 26, 27, paper feed rollers 28, 29, 30 for feeding paper from the respective cassettes and registration rollers 24
And intermediate rollers 31, 32, and 33 for sending them out. The manual feed tray 22 is provided with a plurality of manual paper size detection sensors 34. In the embodiment of the present invention, the manual feed tray 22 can use an OHP sheet. Reference numeral 35 denotes a registration sensor.

The control panel 36 shown in FIG. 3 is a unit for displaying operation and setting contents for the user to operate the copying apparatus. Control panel 36
Are a start key 37, a paper feed port selection key 38, an operation key 39 for selecting and specifying an OHP interleaf mode function, a set number of sheets,
Reset key 40 for resetting the specification of magnification, document size, paper size, paper feed port, etc., numeric keypad 41 for inputting numerical values such as the number of copies to be set, clear stop key 42 for stopping copying and clearing numerical values, magnification Up key 43 for increasing values and the like, down key 44 for decreasing values, a user mode key 45 for performing various mode settings, and a key 4 for setting document size and paper size.
6 and 47, and a display 48 using LEDs for indicating setting states of various functions. Reference numeral 49 denotes a display unit for displaying the selected paper feed cassette or manual feed tray.

When performing normal copying, first, the original is
2 Start key 3 on control panel 36
Press 7. Then, the original is fed by the ADF, and the same size paper is sent out from the paper feed cassette to the registration roller 24.
Registration sensor 3 provided in this registration roller section
After detecting the arrival of the copy paper by 5, the original reading light from the optical unit is irradiated on the photosensitive drum 7, the paper is sent out by the registration roller 24, the paper is conveyed at a predetermined timing, and the paper is discharged after development and fixing. .

Next, the function of the present invention will be described. The functions of the present invention are realized by combining the functions of the following 13 items. (1) OHP interleaving mode copy operation function. (2) A paper feed selection function of the same size based on the OHP interleaf size. (3) Paper feed port designation information reset function. (4) Priority paper port selection function. (5) A plurality of paper feed port priority order setting / storage functions. (6) Automatic selection prohibition paper feed port setting function. (7) Automatic paper feed port switching function during copying. (8) An automatic interleaf paper feeding port selection function realized by a combination of the priority paper feeding port selecting function in the OHP interleaving mode. (9) An automatic slip sheet feed port selection function realized by a combination of a plurality of feed port priority order setting / storage functions in the OHP slip sheet mode. (10) An automatic interleaf paper feed port selection function realized in combination with the automatic selection prohibition paper feed port setting function in the OHP interleaf mode. (11) An automatic interleaf paper feed port selection function realized by a combination with the automatic paper feed port switching function during copying in the OHP interleaf mode. (12) A function for prohibiting the selection of a predetermined paper feed port by a key operation in the OHP interleaf function setting state. (13) The interleaf paper is fed from the interleaf paper tray before the OHP sheet is sent out and discharged from the registration rollers, or the interleaf paper is fed out from the registration rollers and discharged. Function to feed OHP sheets.

Next, these individual functions will be described. First, the OHP interleaving function of the item (1) will be described.
In the copying apparatus of this embodiment, O
An HP interleaf copy operation is performed. An original is placed on the platen glass 6, an OHP sheet is set on the manual feed tray 22, and A4 paper is set on the paper feed cassette 25. Next, the OHP interleaving function is designated by the operation keys 39 of the control panel 36. Then the display section 4 on the control panel
The display 9 indicates that the OHP paper feed port 22 and the interleaf paper feed port 25 are automatically selected. Thereafter, when a copy operation is instructed by the copy start key 37, first,
5, one sheet is fed, and the sheet is developed and fixed through the same transport path as the normal copying operation, and is conveyed to the sheet discharge tray 4.
Next, the OHP sheet is fed from the OHP paper feed port 22 and is carried out to the discharge tray 4 through the same transport path as in the normal copying operation, after development and fixing.

When the ADF 2 is connected, instead of placing the original on the platen glass 6, the original is placed on the original tray 5 of the ADF and an OHP sheet is set on the manual feed tray (paper feed port) 22. A4 paper is set in the paper cassette 25. Then, the OHP interleaving function is designated by the operation keys 39 of the control panel 36. Then, the manual feed tray (OHP paper feed port) 22 and the interleaf paper feed port 25 are automatically selected on the display unit 49 on the control panel, and a display indicating that the automatic selection is performed is displayed. Thereafter, when a copy operation is instructed by the copy start key 37, the ADF2
Feeds one document onto the platen glass 6, then feeds one sheet from the interleaf paper feed port 25, passes through the same transport path as in the normal copy operation, develops, fuses, and discharges it to the output tray 4. Is done. Next, the OHP sheet is fed from the OHP paper feed port 22, is developed and fixed through the same transport path as in the normal copying operation, and is conveyed to the discharge tray 4, whereupon the ADF discharges the original and simultaneously feeds the next original. Then, the above-described series of operations is repeated, and the operation is continued until there are no more documents on the document tray 5 of the ADF 2.

The above is a series of operations of the OHP interleaf copy operation. The interleaf paper feed port may use the paper feed cassettes 26 and 27 instead of the paper feed cassette 25. It may be set to any of the paper feed cassettes 25, 26, and 27. However, the OHP paper supply port and the interleaf paper supply port are not the same paper supply port (cassette or manual tray).

Next, a description will be given of the paper feed selection function of the same size based on the OHP interleaving size of the item (2).

As an example, the paper feed port in which the OHP sheet can be set is the manual feed tray 22 and the manual feed tray 22
The HP sheet is set in the vertical direction (hereinafter, referred to as A4R), the A4 paper is set in the sheet cassette 25 in the horizontal direction (A4), the A4R is set in the sheet cassette 26, and the B4 is set in the sheet cassette 27, respectively. Suppose you were. When the user sets the document A4 in the ADF 2, if the OHP interleaving mode is not set, the sheet cassette 25 in which the same size is set is selected as the copy sheet feeding port based on the document size A4. After this, control panel 3
6 by operating the operation key 39 for the OHP interleaving mode on
In the HP interleaving mode, the flow chart shown in FIG. 4 is executed to automatically select the OHP sheet, that is, the paper feeding cassette 26 having the same size as the manual feeding size based on the manual feeding size as the OHP interleaving paper feeding port. Is done.

A description will be given of the paper feed port designation information reset function of the item (3). Normally, the display section 49 on the control panel 36 displays the setting state. If the copying machine is in a copy enabled state after the power is turned on, the paper feeding port selected by the copying apparatus itself is displayed.

When the user wants to copy from a paper feed port other than the paper feed port, the user designates a paper feed port with the paper feed port selection key 38. This specification information is kept held and does not change until another paper feed port is specified by the paper feed port selection key 38. However, when the reset key 40 is pressed, the paper feed port designation information is reset, and the paper feed port selected by the same copying apparatus as in the initial state, that is, when the power is turned on and the copy enabled state is displayed. . This is because when the reset key 40 is pressed, the paper feed port designation information reset function is activated, and as a result, the copying apparatus itself selects and displays the paper feed port.

A description will be given of the priority paper feed port selection function of the item (4). As an example, the priority order of the paper feed port is
2. The paper feed cassettes 25, 26, and 27 are arranged in this order, the paper feed port with paper is given priority, the paper feed port on which OHP sheets can be set is the manual feed tray 22, and the OHP sheets are set on the manual feed tray 22 in the A4R. The paper A4R is set in each of the paper cassettes 26 and 27, and the paper cassette 25 has a paper size of A4R and no paper. The priority paper feed port selection function at this time is realized by executing the flowchart shown in FIG. In this case, since the paper feed port 25 has no paper, the priority is the highest but is not applicable, and the paper feed port 26 having the next highest priority is automatically selected.

A description will be given of a plurality of paper feed port priority order settings of the item (5) and a function of storing the settings. In this embodiment, when a paper feed port for setting an OHP sheet is set as the manual feed tray 22 and all the paper feed cassettes including the manual feed tray are set to have A4R paper, the interleaf paper feed port is automatically determined. Incorporates the following three paper feed port priority order settings as a program. 1) The priority order of the paper supply ports is set in the order of the paper supply port 25, the paper supply port 26, the paper supply port 27, and the paper supply port 22. 2) The paper feed port priority order is set in the order of the paper feed port 22, the paper feed port 25, the paper feed port 26, and the paper feed port 27. 3) The priority order of the paper supply ports is set in the order of the paper supply port 27, the paper supply port 26, the paper supply port 25, and the paper supply port 22.

The three priority determination programs are provided as independent modules, and the user can select a module having a desired priority by operating a predetermined key on the control panel 36 as shown in FIG. Like that. This operation is the following procedure.

First, the user mode key 45 is pressed. Then, C00 is displayed on the display 48 to indicate that the above-described mode setting state has been established. Next, zoom up key 4
3, and a function switching operation is performed by the down key 44.
The feed priority setting item is C84, and the zoom up key 43 and the down key 44 are used to set the numerical value to 84. Then, the start key 37 is pressed. Then, a numerical value indicating the current paper supply priority order is displayed on the display 48.
Then, a desired paper feed port priority order is selected from the above three paper feed port priority settings with the ten keys 41, and the start key 37 is pressed. After that, the user mode key 45 is pressed to return to the normal state, that is, the set number display state.

The priority order of the paper feed ports is set and stored by the above operation procedure. By performing this setting, when the OHP interleaving mode function is performed, the content of the flowchart shown in FIG. 7 is executed based on the setting storage information, so that the paper feeding port desired by the user is automatically set as the interleaving port. Priority.

The automatic selection prohibition paper feed port setting function of the item (6) will be described. In this embodiment, the paper feed cassettes 25 and 26
The automatic paper source selection function operates when
This logic is shown in the flowchart of FIG. For example, if only the paper feed port 25 is set as the automatic selection prohibited paper feed port, the next-stage paper feed port 26 is selected. Paper feed ports 25 and 26
Is prohibited, the next paper feed port 27 is selected.

The function of the automatic paper source selection is to select the paper source when a special paper or the like is set in a specific paper source by the user, and to select the paper source if there is paper. If special paper or the like is set in a paper feed port having a higher priority only with the function, there is a possibility that special paper that is more expensive than plain paper may be used by mistake. In this embodiment, this is realized by storing the automatic selection prohibition paper source information in the backup memory (non-volatile memory) and incorporating logic for skipping the relevant paper source by referring to the stored information when executing the automatic paper source selection function. doing.

The automatic paper feed port switching function during copying described in the item (7) has a paper feed port composed of a plurality of paper feed cassettes and manual feed trays, and two or more paper feed ports among which are the same paper feed port. If the paper size is the same, if the paper in the specified paper slot runs out during continuous copying, the copy is automatically stopped and the specified number of sheets is copied without stopping the copy. This is a function that is performed continuously, and is a conventional function.

The automatic interleaf paper feed port selection function realized by the combination with the priority paper feed port selection function in the OHP interleaf mode described in the item (8) is described below. The tray 22 is used. Then, except for the manual feed tray 22, the interleaf paper feed port is selected according to the priority paper feed port selection.

The automatic interleaf paper feed port selection function realized by a combination of a plurality of paper feed port priority order setting / storage functions in the OHP interleaf mode described in the item (9) is described below. In the embodiment, the manual feed tray 22 is used.
Then, the manual feed tray 2 is selected from the plurality of paper feed port priority orders.
2, the priority order of the paper feed ports is set.

The automatic interleaf paper feed port selection function realized by combination with the automatic selection prohibition paper feed port setting function in the OHP interleaf mode of the item (10) is used as the paper feed port for setting the OHP in this embodiment. Then, the OHP interleaf paper supply port is automatically selected from the remaining paper supply ports excluding the manual feed tray 22 and the automatic selection prohibition paper supply port set by the automatic selection prohibition paper supply port setting function. is there.

The automatic paper feed port selection function realized by combination with the automatic paper feed port switching function during copying in the OHP paper mode described in the item (11) is a function of feeding paper during OHP paper copy. When there is no paper in the paper feed port, the paper feed port containing paper of the same size is replaced with the paper feed port for setting the OHP. Automatically selects the interleaf paper feed port from among them so that copying is performed without interruption.

The function of prohibiting the selection of a predetermined paper feed port by key operation in the OHP interleaf function setting state of the item (12) will be described. In FIG. 3, a paper feed port selection key 38 is a key for selecting a paper feed cassette, that is, a paper feed port, in which sheets used for copying are stored. Normally, each time this key is pressed, the paper feed port is set to the paper feed port 25, 26, 27,
Select in the order of FIG. 9 is a flowchart showing a method of implementing this selection function.

FIG. 10 shows an embodiment of the function of prohibiting the selection of a predetermined paper port by operating the paper port selection key 38 in the OHP interleaving function setting state according to the present invention. In this embodiment, it is determined whether or not the paper feed ports in the above-mentioned selection order are in the selection prohibited stage in order. If the paper feed ports are in the prohibited order, it is determined whether or not the next paper feed port is in the selection prohibited stage. The determination is made, and if not prohibited, this paper feed port is selected. If this is also prohibited, the next paper feed port is determined.

The interleaf paper is fed from the interleaf paper tray or the interleaf paper is sent out from the resist roller and discharged before the OHP sheet of the item (13) is sent out and discharged from the registration roller. The function of feeding an OHP sheet before the operation is completed will be described. According to the present invention, as shown in FIG. 11, when the previously sent paper or OHP sheet passes through the registration sensor 35, the logic is such that the next OHP sheet or paper to be fed is fed. That is, the invention according to claim 1 has the above-described function (1),
(2), (3), (4), (5), (6), (7),
This can be achieved by a combination of the contents described in (8), (9), (10), (11), and (12). This allows the user to automatically select the interleaf paper tray when using the OHP interleaf function, eliminate troublesome operations, and meet the user's desire to intentionally specify the interleaf paper tray. The interleaf paper tray can use all paper feed ports other than the tray on which the OHP sheet is set.

By setting the paper feed port priority selection order desired by the user in advance, the user simply sets the OHP sheet and specifies the interleaving function, and the paper of the same size as the OHP sheet is automatically inserted. This has the effect of selecting the desired interleaf paper feed port in accordance with the priority selection order, so that a simple operation such as simply instructing the operation start can be performed. In addition, it is possible to eliminate the trouble that the operation start operation is prohibited when the size of the conventional slip sheet is different from that of the OHP sheet.

The automatic interleaf feeding executed when the OHP interleaving function is designated by means for prohibiting the automatic selection of the paper feeding port containing special paper such as color paper or thick paper. The paper slot selection function selects and sets the interleaf paper slot containing paper of the same size as the OHP sheet only from the paper slot containing plain paper. It is possible to prevent a problem that an undesired sheet is erroneously used as a slip sheet without having to take care of the type or the like.

Further, it is possible to prevent the copying operation from being interrupted even when the designated paper feed port runs out of paper, and to prevent a plurality of users from using the apparatus of the present invention before using the apparatus. The paper slot specified by the user
It is also possible to prevent the next user from making an unintentional copy with the wrong setting. In addition, during the period from when the OHP interleaving function is specified to when this function is reset, the paper supply port on which the OHP sheet can be set cannot be selected by the paper supply port selection input means. OHP on interleaf paper
The inconvenience of using a sheet can be avoided.

By combining item (13), if the interleaving paper size is specified to be different from the OHP sheet size in the copying operation using the OHP interleaving function, the OHP sheet is sent out from the registration roller. The interleaf paper is fed before the paper is ejected, or the OHP sheet is fed before the interleaf paper is sent out from the registration roller and discharged.

Therefore, it is possible to shorten the OHP interleaving copy time of the distance from the registration roller to the discharge port / paper transport speed.

[0062]

As described in detail above, the present invention provides an OH
Provided is an image forming apparatus which can eliminate the troublesome operation of automatically selecting a paper sheet tray when the P paper function is used, and can meet a user's desire to intentionally designate a paper sheet tray. It is. As a result, the interleaf paper tray can use all the paper feed ports other than the tray on which the OHP sheet is set.

Also, by setting the paper feeder port priority selection order desired by the user in advance, the user simply sets the OHP sheet and specifies the interleaving function, and the paper of the same size as the OHP sheet is automatically inserted. The desired interleaf paper feed port is selected in accordance with this priority selection order. Therefore, a simple operation such as instructing the start of the operation is sufficient.

Further, an effect is obtained that the troublesome operation of starting operation is prohibited if the size of the conventional slip sheet is different from that of the OHP sheet. The automatic interleaf paper feeding port selection function executed when the OHP interleaving function is designated by means for prohibiting the automatic selection of the paper feeding port containing special paper such as color paper or thick paper. Selects and sets the interleaf paper feed port that contains paper of the same size as the OHP sheet only from the paper feed port that contains plain paper. It is possible to obtain an effect that it is possible to prevent a problem that an undesired sheet is erroneously used as an interleaving sheet without taking into consideration.

Further, there is an effect that it is possible to prevent the copying operation from being interrupted even when the designated interleaf paper feed port runs out of paper.

Further, when a plurality of users use the apparatus of the present invention, an unintended copy can be made with the paper feed slot designated by the previously used user set incorrectly by the next user. The effect of preventing taking out is obtained.

In the period from when the OHP interleaving function is designated to when the function is reset, the paper supply port on which the OHP sheet can be set cannot be selected by the paper supply port selection input means. This has the effect of avoiding the inconvenience of using an OHP sheet for the slip sheet.

In the copying operation using the OHP interleaving function, if the interleaving paper size is specified to be different from the OHP sheet size, the OHP sheet is sent out from the registration rollers until it is discharged. The OHP sheet is fed between the time when the interleaf paper is fed or the time when the interleaf paper is sent out and discharged from the registration roller. Many effects can be obtained such that the time of OHP interleaf copy can be shortened.

[Brief description of the drawings]

FIG. 1 is a perspective view of a copying machine according to the present invention.

FIG. 2 is a cross-sectional view of the copying machine of the present invention.

FIG. 3 is a plan view of a control panel of the copying machine of the present invention.

FIG. 4 is a flowchart for explaining a paper feed selection function of the same size based on an OHP interleaf size;

FIG. 5 is a flowchart for explaining a priority paper feed port selection function;

FIG. 6 is a flowchart for explaining a plurality of paper feed port priority order setting / storage functions;

FIG. 7 is a flowchart for explaining an automatic slip sheet feeding port selection function realized by a combination of a plurality of feeding port priority order setting / storage functions in the OHP slip sheet mode;

FIG. 8 is a flowchart for explaining an automatic interleaf paper feed port selecting function realized in combination with the automatic selection prohibition paper feed port setting function in the OHP interleaf mode;

FIG. 9 is a flowchart for explaining a predetermined paper feed port selection prohibition function by a key operation.

FIG. 10 is a flowchart for explaining a function of prohibiting the selection of a predetermined paper feed port by a key operation in the OHP interleaf function setting state;

FIG. 11 shows a state in which the interleaf paper is fed from the interleaf paper tray before the OHP sheet is sent out and discharged from the registration rollers, or the interleaf paper is fed out and discharged from the registration rollers. For explaining an operation of feeding an OHP sheet

FIG. 12 is a flowchart for explaining a conventional OHP slip-sheet mode copy operation;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Copier main body 2 ADF 3 Control panel 4 Discharge tray 5 Original tray 7 Photosensitive drum 10 Developing unit 13 Cleaning blade 14 Optical unit section 20 Fixing device 22 Manual feed tray 24 Registration roller 25 Paper feed cassette 26 Paper feed cassette 27 Paper feed cassette 34 Manual feed size detection sensor 35 Registration sensor 36 Control panel 37 Start key 38 Paper feed slot selection key 39 Operation key for selecting OHP interleaf mode function 40 Reset key 41 Numeric key 42 Clear stop key 43 Up key 44 Down key 45 User mode key 46 Original size setting key 47 Paper size setting key 48 Display 49 Display

Claims (7)

[Claims] At least one OHP tray on which OHP sheets can be set, a plurality of paper trays on which interleaf paper can be set, and an interleaf paper tray accommodating interleaf paper of the same size as the OHP tray. Selecting means for selecting, and first setting means for setting in advance the priority order of use of the paper tray for interleaving, wherein the first setting means determines in advance the priority order of interleaving paper for the paper tray. A plurality of paper feed port priority order setting programs, a desired one is selected and designated, and when a plurality of paper trays having the same size as the OHP tray are detected by the selection means, a preset slip sheet use priority is set. A copying apparatus characterized in that a paper tray is selected and used in order. 2. An at least one OHP tray on which OHP sheets can be set, a plurality of paper trays on which interleaf paper can be set, and an interleaf paper tray containing sheets of the same size as the OHP tray are selected. Selecting means, and second setting means for presetting the size of a paper tray having a high use priority for interleaving of the paper tray, the size of an OHP tray on which OHP sheets can be set by the selecting means. When it is determined that there is no interleaving paper in the paper tray of the same size or the same size as the OHP tray, the paper tray having the higher priority of using the interleaving paper set in advance by the second setting means is selected. A copying apparatus characterized by being selected. 3. Selecting at least one OHP tray on which an OHP sheet can be set, a plurality of paper trays on which an interleaf sheet can be set, and an interleaf paper tray containing sheets of the same size as the OHP tray. Selection means, first setting means for setting in advance the priority order of use of the paper trays for interleaving, and setting to prohibit selection of use of at least one of the plurality of paper trays. A copying apparatus, comprising: a third setting unit, wherein a sheet tray for which the selection is prohibited is not selected even if the size is the same as the OHP tray. 4. An at least one OHP tray on which OHP sheets can be set, a plurality of paper trays on which interleaf paper can be set, and a paper tray containing interleaf paper of the same size as the OHP tray are selected. Selection means, first setting means for presetting the priority order of use of the paper tray for interleaving, and OH for designating an OHP interleaving function
P interleaf paper function designating means, wherein when the OHP interleaf paper function is designated by the OHP interleaf paper function designation means, the paper feed information in the paper tray selected before that is reset, and the first setting means Wherein the paper tray is selected in accordance with the priority order of use of the paper tray set in advance. 5. Selecting at least one OHP tray on which an OHP sheet can be set, a plurality of paper trays on which an interleaf sheet can be set, and an interleaf paper tray containing sheets of the same size as the OHP tray. Selection means, first setting means for presetting the priority order of use of the paper tray for interleaving, and OH for designating an OHP interleaving function
P interleaving function designating means, and a paper tray selecting means capable of arbitrarily selecting and specifying a paper tray.
When the OHP interleaving function is specified by the HP interleaving function specifying means,
2. A copying apparatus according to claim 1, wherein said OHP tray cannot be selected by said paper tray selecting means. 6. Selecting at least one OHP tray on which OHP sheets can be set, a plurality of paper trays on which interleaf paper can be set, and a paper tray containing interleaf paper of the same size as the OHP tray. Selection means, first setting means for presetting the priority order of use of the paper tray for interleaving, and OH for designating an OHP interleaving function
P interleaving function designating means, and when the interleaving paper size is different from the OHP sheet size in the copying operation by the OHP interleaving function, the rear end of the OHP sheet or the interleaving paper is sent out from the registration roller. A copying apparatus characterized in that a slip sheet or an OHP sheet is fed upon detection of this. 7. An automatic document feeder, at least one OHP tray on which OHP sheets can be set, a plurality of paper trays on which interleaf paper can be set, and interleaf paper of the same size as the OHP tray. Selecting means for selecting the selected paper tray, first setting means for presetting the use priority order of the paper trays for interleaving, and OHP interleaving function specifying means for specifying the OHP interleaving function. In the course of performing the OHP interleaving copy operation in which the OHP interleaving function is designated, the interleaving of the paper tray used by the first setting means is set in advance for the interleaving use. When the paper runs out, another paper tray with the same size paper as the paper tray used is automatically selected, and the OHP paper copy operation can be performed continuously without interruption. And a copying machine characterized in that the copying machine is capable of: