JP2003101720A - Image forming device and image forming system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image forming device and an image forming system capable of accelerating a use of a reverse side by preventing a mistake in forming images without providing a new device in existent models also. SOLUTION: An image forming device comprises a paper feed 18 having a plurality of trays for storing transfer papers; an image formation part such as an image pickup 20, a fixing part 21, or the like for forming images on the transfer paper fed from this paper feed 18; and an operation/display unit 11 for setting the kind of transfer papers containing a back paper (the transfer paper of which one side is used) in each tray, to display a paper kind setting state in each tray.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus and an image forming system such as a multifunction machine or a copying machine having a multifunction function such as a facsimile function, a scanner function and a printer function.

[0002]

2. Description of the Related Art Conventionally, an image forming apparatus of this type uses a recognizing means for recognizing that the backing paper is used when the backing paper is set in a paper feeding section, and the backing paper is used by this recognizing means. When it is recognized that the backing sheet is set, a display unit for displaying the setting state of the backing sheet is provided to prevent an image forming error when the backing sheet is used (Japanese Patent Laid-Open No. 9-146420).

As a part of global environment conservation activities,
Further, from the viewpoint of cost reduction, there is an increasing chance that a backing paper (transfer paper that has been used on one side) is used as a transfer paper for other than official documents. Here, if you do not notice that the backing paper is set in the paper tray and an image forming error (for example, use the backing paper for the official document or use the backing paper in the duplex mode), The reuse of the backing paper is wasted.

[0004]

However, in such a conventional image forming apparatus, since it is necessary to provide a backing sheet detecting means for each tray, there is a problem that the structure becomes complicated and the cost is increased. . Further, there is a problem that it is difficult to provide a new backing sheet detecting means for existing models that do not have the backing sheet detecting means.

An object of the present invention is to improve such problems and prevent an error in image formation and to promote the use of backing paper without providing a new device for existing models. And to provide an image forming system.

[0006]

According to a first aspect of the present invention, there is provided a sheet feeding means having a plurality of trays for storing transfer sheets for forming an image, and the sheet feeding means. Image forming means for forming an image on the transfer paper, paper type setting means for setting the type of transfer paper including backing paper for each tray, and display means for displaying the paper type setting state for each tray. It is characterized by this.

With this configuration, the backing paper (transfer paper that has been used on one side) can be selected from the existing operation / display unit, etc., thereby promoting the reuse of the backing paper and reducing the cost for environmental protection and resource saving. It will be reduced.

According to a second aspect of the present invention, in the first aspect, the paper size of the tray in which the paper type is set to the back side by the paper type setting means, and the paper type is set to the back side by the paper type setting means. It is characterized in that it has a backing sheet priority setting means for setting the preferential use of the backing sheet when the paper size of the tray not set to is the same.

With this configuration, the tray on which the backing paper is set is preferentially used to promote the reuse of the backing paper.

According to a third aspect of the present invention, in the second aspect, the tray whose paper type is not set to the backing paper is selected regardless of whether or not the preferential use of the backing paper is set. It is characterized in that a non-backing paper selection setting means for setting is provided.

With this configuration, the use of the tray on which the backing paper is set is prohibited by, for example, pressing the formal document designating key that specifies that it is a formal document. You will be able to prevent mistakes.

According to a fourth aspect of the present invention, in the first aspect, the double-sided setting means for setting the double-sided function of forming an image on both sides of the transfer paper by the image forming means, and the paper type by the paper type setting means. It is characterized in that it is provided with a double-sided prohibiting means for prohibiting setting of the double-sided function by the double-sided setting means when a tray having backing paper is selected.

With this configuration, when the tray on which the backing paper is set is selected, the double-sided function (double-sided mode) is not selected, and it is possible to prevent a printing error or a copying error of printing on both sides of the backing paper. Become.

According to a fifth aspect of the present invention, in the first aspect, the double-sided setting means sets the double-sided function for forming an image on both sides of the transfer paper by the image forming means, and the double-sided function is set by the double-sided setting means. In this case, a backing sheet prohibiting unit that prohibits the selection of the tray whose paper type is set to the backing sheet by the paper type setting unit is provided.

With this configuration, when the double-sided function is selected, it is not necessary to select the tray on which the backing paper is set, and it is possible to prevent a printing error or a copying error such as double-sided printing on the backing paper.

According to a sixth aspect of the present invention, there is provided an image forming system in which an image forming apparatus and a host device are connected to each other, and the image forming apparatus has a plurality of trays for storing transfer sheets for forming an image. Paper feeding means, image forming means for forming an image on the transfer paper fed by the paper feeding means, and paper type setting means for setting the type of transfer paper including the backing paper used on one side for each tray. A communication unit for communicating with the host device, a communication unit for communicating with the image forming apparatus, and a transfer set by the paper type setting unit via the communication unit. It is characterized in that it is provided with a paper type information acquisition means for acquiring paper type information relating to the paper type and a display means for displaying the paper type information.

With this configuration, the host device such as a personal computer acquires the paper type information (information indicating the paper type set in each tray) from the image forming apparatus, so that the host device side can easily perform the operation of each tray. This makes it possible to identify the paper type and prevent printing mistakes due to the use of backing paper.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. [First Embodiment] This embodiment is an application of the invention described in claims 1, 4, and 5. As shown in Figure 1,
Image forming apparatus (copying machine) according to the first embodiment of the present invention
Is a sheet feeding unit such as a sheet feeding unit 18 having a plurality of trays for storing transfer sheets for forming an image, and the sheet feeding unit 1.
Image forming means such as an image forming unit 20 and a fixing unit 21 for forming an image on a transfer paper fed by 8 or the like, and a type of transfer paper including a backing paper (transfer paper used on one side) for each tray. Paper type setting means such as an operation / display unit 11 to be set,
A display unit such as an operation / display unit 11 for displaying the paper type setting state for each tray is provided.

In FIG. 1, an automatic document feeder (ADF)
Reference numeral 12 is mounted on the main body of the copying machine, conveys an original document to be read to a reading position, and discharges the original after single-sided or double-sided reading to a sheet discharge tray (not shown) according to a preset operation mode. is there.

The optical unit 13 includes a mirror, a light source,
Imaging lens, shading plate, photoelectric conversion element (CCD
Image sensor) and is included in the scanner unit. This scanner unit irradiates a document inserted and conveyed by the ADF 12 with light from above the conveyance path, and reflects the reflected light through a mirror and an imaging lens to CC.
An image is formed on the light receiving surface of the D image sensor, and the image surface is sequentially converted into image signals (image data).

The image memory (RAM or the like) 14 stores the image data read and encoded by the scanner unit. The image processing unit 15 includes the image memory 1
The image data stored in 4 is subjected to necessary image processing at the time of copying. The image-processed data is output to a transfer sheet by a printer unit (image forming unit 2).
0, including the fixing unit 21).

The non-volatile memory 16 stores various information and various setting information unique to the image forming apparatus of this embodiment. This setting information is, for example, the paper type (backing paper) of the transfer paper to be stored in the tray 1, the paper size (A4 landscape), and the like. The interface unit (I / F unit) 24 is for connecting to an external device such as a personal computer.

The paper feed section 18 comprises a plurality of paper feed trays for containing transfer paper. The double-sided paper feeding unit 19 reversely conveys the transfer paper after single-sided printing in order to perform double-sided printing.
The manual feed unit (not shown) manually feeds the transfer sheets one by one, and is configured to be folded and stored when not in use.

The image forming unit 18 is centered on a drum-shaped photosensitive member (not shown), and a charging charger, a writing unit, a developing unit, a transfer charger, and a separation charger are arranged around the photosensitive member in the order of the electrophotographic process. Are installed. The writing unit constitutes a laser writing optical system including a laser output unit (including a laser diode and a polygon mirror), an imaging lens, and a mirror.

The fixing unit 21 is located downstream of the transfer position of the photosensitive member in the conveying direction and is composed of a fixing roller, a pressure roller and the like. Below the fixing unit 21, a paper discharge unit including a paper discharge roller and a paper discharge tray are sequentially provided.

The selected application detection section 22 is the operation / display section 1.
The selection content of the application by pressing the application switching key 34 (shown in FIG. 2) 1 is detected, and the system control unit 17 is notified. The application has a copy function, a printer function, and the like, and by pressing the application switching key 34 corresponding to these functions, the display of the touch panel 35 shifts to the screen of the selected application. The font information storage unit 23 stores font information when converting a character code into a bit pattern.

The system control unit 17 controls the drive of the carry motor (including speed control) and operation based on detection signals from various sensors (not shown), state signals of the carry motor, setting signals of the operation / display unit 11, and the like. / Display control of the touch panel 35 (shown in FIG. 2) in the display unit 11 is performed.
In the memory (RAM / ROM, etc.) of the system control unit 17, the operation mode input / set from the operation / display unit 11 (one-sided mode for printing / copying on one side of transfer paper, printing for both sides of transfer paper / It stores the information such as the duplex mode for copying) and paper type setting contents, and can be updated whenever the operation mode or setting contents are changed. Further, in the memory of the system control unit 17, a copy function of recording (printing) an image read and input from the scanner unit by an electrophotographic method, an image from a host computer connected through the interface unit 24, etc. is recorded ( It stores a program and necessary data for realizing a printer function for performing printing, a function for displaying the setting content of the paper type stored in the paper feed tray on the touch panel 35, and the like.

The operation / display unit 11 is, as shown in FIG.
Touch panel 35, application switching key 34, initial setting key 32, simple menu key 33, start button 37
It also has a hard key portion 38 such as a numeric keypad 36 and a one-touch hard key portion 31. The touch panel 35 also has an input operation unit including function keys that appear appropriately for each screen, and a display unit that displays a message such as the type of paper that can be fed, the number of prints, and the device status. With such an operation / display unit 11, the user can set / display the operation mode (single-sided mode, double-sided mode, etc.) in the printer / copy function, instruct / start the operation, and set / display the paper type for each paper tray. It is possible by operation. The setting contents such as the operation mode by the user operation are transmitted from the operation / display unit 11 to the system control unit 17.

With this configuration, the transfer paper is selected and fed from the paper feed tray of the paper feed unit 18 according to the document length detected on the ADF 12 side or the paper type designated in advance. It is conveyed to the transfer position of the photoconductor by a conveyance unit (not shown). On the other hand, on the side of the photoconductor that is rotationally driven in the sub-scanning direction, an electrostatic latent image is formed by the optical writing in the main scanning direction by the writing unit, and a toner image is formed by being developed by the developing unit. .
The transfer paper conveyed from the paper feed tray of the paper feed unit 18 is
While being synchronized with the leading edge of the toner image, the toner image is transferred by the conveyor belt that is driven at the same speed as the photosensitive member, and the toner image is transferred. The transfer sheet after the transfer is subjected to a fixing process by the fixing unit 21, and then is discharged onto a sheet discharge tray via a sheet discharge roller (not shown) according to the sheet size.

Next, the paper type setting operation of this embodiment will be described. When the user presses the initial setting key 32 provided on the operation / display unit 11, the touch panel 35 is pressed.
The display screen of (1) shifts to the initial setting screen, and further shifts to the paper type setting screen of menu A shown in FIG. 3 by a predetermined operation. On this paper type setting screen, the paper type currently set is displayed together with the number indicating each tray. By pressing the [Change] key of the tray to be changed on the screen, the screen moves to the menu B screen. To do. For example, when the [change] key of the tray 1 is pressed, paper type information (for example, recycled paper, special paper, backing paper, etc.) indicating the type of transfer paper stored in the tray 1 and the [setting] key And the [Cancel] key is displayed. Here, the user selects one of the paper type information (for example, backing paper) by a toggle operation,
If you press the [Set] key or the [Cancel] key,
You will be returned to Menu A. The paper type information for each tray set in this way is sent from the operation / display unit 11 to the system control unit 17 and is stored in the memory in an updatable manner. Then, when the initial setting key is pressed, the user exits the initial setting screen and returns to the main screen. In this main screen, for example, in addition to a message indicating whether or not copying is possible, the number of copies, print color (black, red, two colors, etc.), density setting, document type (text, text / photo, photo, light original) ,
Setting information such as copy original), paper selection (Tray 1: A5 portrait, Tray 2: B4 landscape, Tray 3: A3 portrait, Tray 4: A2 landscape, etc.) Is displayed. Further, in this embodiment, as shown in FIG. 4, at least the tray number and the paper size for each paper feed tray are displayed, and a mark indicating a backing paper set (for example, a backing paper set is displayed at the display position 51 of the tray storing the backing paper). , E, etc.) are added. In FIG. 4, the above-mentioned print colors (black, red, two colors, etc.), density settings, and types of originals (characters, characters / photographs, photographs, light originals, copied originals, etc.)
Are omitted.

Further, when the tray with the backing paper set as described above is selected, the operation / display unit 11 displays
On the main screen shown in FIG. 4 or a menu screen (not shown), an item is displayed in half-brightness to select the double-sided function to print on both sides of the transfer paper, and the selection is disabled. On the other hand, when the double-sided function is selected and set in advance from the operation / display unit 11, the operation / display unit 11 displays the main screen shown in FIG. The tray with paper set is displayed in half brightness and cannot be selected. The item for selecting the double-sided function and the brightness display of the tray on which the backing sheet is set may be left unchanged, and a special mark (for example, an X mark) may be added and the selection may be prohibited. .

As described above, the copying machine according to the first embodiment of the present invention includes a sheet feeding unit such as a sheet feeding unit 18 having a plurality of trays for storing transfer sheets for forming an image, and the sheet feeding unit. Image forming means such as an image forming part 20 and a fixing part 21 for forming an image on the transfer paper fed by the paper feed part 18 or the like;
Paper type setting means such as an operation / display unit 11 for setting the type of transfer paper including the backing paper used on one side for each tray,
Since it is provided with a display unit such as the operation / display unit 11 for displaying the paper type setting state for each tray, it is possible for the user to store the back sheet in the tray without providing the back sheet detection unit for each tray. By setting it by itself, it is possible to promote environmental protection and cost reduction by using the backing paper.

Further, in the copying machine according to the first embodiment of the present invention, since the tray on which the backing paper is set is displayed on the touch panel 35 of the operation / display unit 11, the user can set the backing paper on any tray. You can easily identify if the paper is set.

In the copying machine according to the first embodiment of the present invention, the operation / display for setting the double-sided function of forming images on both sides of the transfer sheet by the image forming means such as the image forming section 20 and the fixing section 21. Operation / display for prohibiting the setting of the double-sided function when the double-sided setting unit such as the unit 11 and the system control unit 17 and the tray of which the paper type is backed by the paper type setting unit are selected. Since the double-sided prohibition unit such as the unit 11 and the system control unit 17 is provided, it is possible to prevent a double-sided copy error when the backing sheet is used.

Further, in the copying machine according to the first embodiment of the present invention, the operation / display unit for setting the double-sided function of forming images on both sides of the transfer paper by the image forming unit such as the image forming unit 20 and the fixing unit 21. 11. A double-sided setting unit such as the system control unit 17, and a system control unit for prohibiting selection of a tray whose paper type is set to the backing paper by the paper type setting unit when the double-sided function is set Since the backing sheet prohibiting means such as 17 is provided, it is possible to prevent a double-sided copy error when the backing sheet is used.

[Second Embodiment] The configuration of the image forming apparatus of this embodiment is substantially the same as that of the first embodiment.
1 and 2 are used, and the description is omitted. Further, the present embodiment is an application of the invention described in claim 2.

FIG. 5 shows a back sheet priority setting operation of the image forming apparatus according to the second embodiment of the present invention. This is different from the first embodiment in that the paper size of the tray in which the paper type is set as the backing sheet by the paper type setting means such as the operation / display unit 11 and the paper type set by the operation / display unit 11 in the back side. The difference is that a back paper priority setting means such as a system control unit 17 for setting the priority use of the back paper when the paper size of the tray not set to the paper is the same is provided. According to this configuration, by preferentially using the backing paper, it is possible to obtain an effect that it is possible to promote environmental protection and cost reduction by reusing resources.

In this embodiment, when the user depresses the initial setting key 32 provided on the operation / display unit 11, the display screen of the touch panel 35 shifts to the initial setting screen, and a predetermined operation is performed, as shown in FIG. The screen shifts to the backing sheet priority setting screen of menu C shown in. Here, the touch panel 35 is provided with a [backing paper priority use] key for a toggle operation for setting the backing paper priority use. If you press this [Backing paper priority use] key, and then press the [Yes] key that sets the backing paper priority use and the [No] key that does not set the backing paper priority use, the setting contents are displayed in the operation / display section. 11 is sent to the system control unit 17 and is stored in the memory in an updatable manner. Then, when the initial setting key is pressed, the user exits the initial setting screen and returns to the main screen. In addition,
The backing sheet setting operation and the backing sheet set display are based on the first embodiment. The system control unit 17 preferentially selects the tray in which the backing paper is stored when the paper feeding operation is performed by the paper feeding unit 18 when the above-described backing paper priority use is set.

[Third Embodiment] The configuration of the image forming apparatus of this embodiment is substantially the same as that of the first embodiment.
1 and 2 are used, and the description is omitted. Further, the present embodiment is an application of the invention described in claim 3.

FIG. 6 shows a formal document designation operation of the image forming apparatus according to the third embodiment of the present invention. This is different from the first embodiment in that the operation / display unit 11 is set to select a tray whose paper type is not set to the backing sheet, regardless of whether the priority use of the backing sheet is set or not. It is different in that it has a non-backing paper selection setting means such as. According to this configuration, it is possible to obtain an effect that the use of the backing paper can be prohibited for a document in which it is inconvenient to use the backing paper, regardless of whether or not the backing paper priority use is set.

In this embodiment, when the user depresses the initial setting key 32 provided on the operation / display unit 11, the display screen of the touch panel 35 shifts to the initial setting screen, and a predetermined operation is performed. The screen shifts to the official document designation screen of menu D shown in. Here, the touch panel 35 is provided with a [formal document designation] key for a toggle operation for setting the designation of a formal document. When this [formal document designation] key is pressed, and the [yes] key for setting the formal document designation and the [no] key for not setting the formal document designation are pushed, the setting contents are displayed from the operation / display unit 11 to the system. It is sent to the control unit 17 and stored in the memory so that it can be updated. Then, when the initial setting key is pressed, the user exits the initial setting screen and returns to the main screen. In addition,
The backing sheet setting operation and the backing sheet set display are based on the first embodiment, and the backing sheet priority setting operation is based on the second embodiment. When the above-mentioned official type designation is made, the system control unit 17 causes
It is prohibited to use the tray that contains the backing paper.

[Fourth Embodiment] In the present embodiment, the invention according to claim 6 is applied, and a personal computer is used as an image forming apparatus such as a copying machine or a multifunction machine having a printer function shown in the first embodiment. Etc. are connected to a host device. This personal computer has a CP
U, a memory such as RAM / ROM, a display device such as a CRT, an input device such as a keyboard or a pointing device, and an interface for data communication with the copying machine or the like. Note that FIGS. 1 and 2 are used for the configuration of the image forming apparatus.

The image forming system according to the fourth embodiment of the present invention includes, in the image forming apparatus, a paper feeding unit 18 having a plurality of trays for storing transfer papers for forming an image, and the like. An image forming unit 20, a fixing unit 21, etc. for forming an image on the transfer paper fed by the means, and an operation / display unit 11 for setting the type of the transfer paper including the backing paper used on one side for each tray. , An I / F unit 24 for communicating with a personal computer, and an interface for communicating with the image forming apparatus, and an operation / display unit 11 via the interface. A paper type information acquisition unit such as a CPU and a memory for acquiring the paper type information relating to the type of transfer paper, and a display device for displaying the paper type information.

In this embodiment, when a print request (including print data) is transmitted from the personal computer to the copying machine via the interface and I / F section 24, the system control section 17 prints the print request. Upon receiving the request, the paper feeding unit 18, the image forming unit 20, the fixing unit 2
Notify 1. As a result, the copying machine starts the paper feeding operation and further starts the printing operation. As described above, when the print data is transmitted from the personal computer to the copying machine for printing, the property key 4 described later is used.
At the time of pressing 2, the setting information including the paper type information is transmitted from the copying machine to the personal computer.

Here, in order to instruct the copying machine to perform printing, the personal computer displays a print screen 41 shown in FIG. 7 on the display device, and the print screen 41 is displayed.
Then, when the property key 42 is pressed, the screen shifts to the print screen 44 shown in FIG. In this print screen 44,
The paper type information is displayed in the paper type display field. After this, when the copying machine is instructed to print, the copying machine converts the print data received from the personal computer via the I / F unit 24 into printable raster data and expands it. The print data transmitted from the personal computer is the page description language (PDL) describing the character type, print width, line feed width, etc., and the data types are text, raster graphics, and vector.・ Graphics, etc. The print data converted into raster data as described above is further converted into write data and printed out.

As described above, in the image forming system according to the fourth embodiment of the present invention, the paper type relating to the type of the transfer paper set on the personal computer side through the interface on the image forming apparatus side is set. Since the information is acquired and displayed on the display device, it is possible to prevent the user from using the backing paper when printing the official document by confirming the display content of the paper type information.

In the present embodiment, the case where the paper type information is displayed on the personal computer side has been described, but the second or third embodiment is further applied to give priority to the back paper in addition to the paper type information. The same effect can be obtained by displaying information on use or designation of official documents. Further, although the case where the personal computer and the copying machine are directly connected has been described in the present embodiment,
In addition to this, the same effect can be obtained by connecting via a network such as a LAN.

In each of the above-described embodiments, the sheet feeding section 18 and the like constitute the sheet feeding means, the image forming section 20, the fixing section 21 and the like constitute the image forming means, and the operation / display section 11 and the like described above. Any one of the paper type setting means, the display means of the image forming apparatus, the backing paper priority setting means, the non-backing paper selection setting means, and the double-sided setting means, and the system control unit 17 and the like, the double-sided prohibiting means, The backing paper prohibiting unit is configured, the interface, the I / F unit 24, and the like configure the communication unit, the CPU, the memory, and the like configure the paper type information acquiring unit, and the display device of the personal computer is configured. The display means of the host device is configured.

[0049]

According to the first aspect of the invention, the reuse of the backing paper can be promoted by making the backing paper selectable by the paper type setting means.

According to the second aspect of the invention, the paper size of the tray for which the back paper is set by the paper type setting means and the paper for the tray for which the back paper is set by the paper type setting means When the sizes are the same, the tray on which the backing paper is set is preferentially used, so that the reuse of the backing paper can be promoted.

According to the third aspect of the invention, the tray on which the backing paper is set is preferentially used as described above by pressing the formal document designation key for designating the formal document. Regardless of the setting, trays that have no backing paper set are automatically selected, so it is possible to prevent printing mistakes and copy mistakes of official documents due to the use of backing paper.

According to the fourth aspect of the invention, when the tray on which the backing paper is set is selected, the double-sided function cannot be selected. Can be prevented.

According to the fifth aspect of the invention, when the double-sided function is selected, the tray in which the backing paper is set cannot be selected. Can be prevented.

According to the sixth aspect of the present invention, in the multi-function peripheral having the printer function, the fact that the backing paper is set in the tray can be easily identified by the host device side, so printing using the backing paper is possible. You can prevent mistakes.

As described above, according to the present invention, it is possible to prevent the image forming mistake and promote the use of the backing paper without providing a new device for the existing model.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an image forming apparatus according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an operation / display unit according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a paper type setting operation according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a touch panel screen according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a backing sheet priority setting operation according to the second embodiment of the present invention.

FIG. 6 is a diagram showing a formal document designation operation according to the third embodiment of the present invention.

FIG. 7 is a diagram showing a print display screen of a personal computer according to a fourth embodiment of the present invention.

FIG. 8 is a diagram showing a print display screen (paper type display) of a personal computer according to a fourth embodiment of the present invention.

[Explanation of symbols]

11 Operation / display 12 ADF (Automatic document feeder) 13 Optics 14 image memory 15 Image processing unit 16 non-volatile memory 17 System control unit 18 Paper feeder 19 double-sided paper feeder 20 Image Department 21 Fixing part 22 Selected app detector 23 Font information storage 24 I / F section (interface section)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03G 21/00 386 G03G 21/00 386 396 396 G06F 3/12 G06F 3/12 MF term (reference) 2C061 AP01 AP03 AP04 AP07 AQ06 AR03 AS02 CQ04 CQ29 CQ34 CQ36 CQ38 HH13 HJ03 HN04 HN17 2H027 DC19 EJ15 FA05 FA13 FA30 FB13 FB17 FC02 GB01 GB04 ZA07 2H028 BB08 BD01 5B021 AA01 AA02 AA05 AA19 KK00 PP04 PP06 5C062 AA02 AA05 AB22 AB23 AB30 AB42 AC04 AC09 AC10 AF00

Claims (6)

[Claims] 1. A paper feed means having a plurality of trays for storing transfer paper for forming an image, an image forming means for forming an image on the transfer paper fed by the paper feed means, and each tray. An image forming apparatus comprising: a paper type setting unit for setting a type of transfer paper including a backing sheet; and a display unit for displaying a paper type setting state for each tray. 2. The paper size of the tray whose paper type is set to the backing paper by the paper type setting means is the same as the paper size of the tray whose paper type is not set to the backing paper by the paper type setting means. 2. The image forming apparatus according to claim 1, further comprising a backing sheet priority setting unit that sets priority use of the backing sheet. 3. A non-backing paper selection setting means for setting such that a tray whose paper type is not set to backing paper is selected regardless of whether priority use of the backing paper is set or not. The image forming apparatus according to claim 2, wherein: 4. When a double-sided setting means for setting a double-sided function for forming an image on both sides of a transfer paper by the image forming means and a tray whose paper type is a backing paper by the paper type setting means are selected. The image forming apparatus according to claim 1, further comprising: a double-sided prohibiting unit that prohibits setting of the double-sided function by the double-sided setting unit. 5. A double-sided setting means for setting a double-sided function for forming an image on both sides of a transfer sheet by the image forming means, and a paper type setting means for setting the double-sided function by the double-sided setting means. The image forming apparatus according to claim 1, further comprising: a backing sheet prohibiting unit that prohibits selection of a tray whose seed is set as a backing sheet. 6. An image forming system in which an image forming apparatus and a host device are connected to each other, wherein the image forming apparatus has a plurality of trays for storing transfer sheets for forming an image, and a paper feeding unit. Image forming means for forming an image on the transfer paper fed by the paper means, paper type setting means for setting the type of transfer paper including the backing paper used on one side for each tray, and communication with the host device Communication means for communicating with the image forming apparatus to the host device, and paper type information relating to the type of transfer paper set by the paper type setting means via the communication means. An image forming system comprising: a paper type information acquisition unit for acquiring the paper type information; and a display unit for displaying the paper type information.