JP4337682B2 - Image forming apparatus - Google Patents

Description

  The present invention relates to an image forming apparatus that forms an image on a sheet by, for example, electrophotography.

  Conventionally, the photosensitive layer of a uniformly charged photoreceptor is exposed to light to form a latent image and developed by attaching toner to the photosensitive layer on which the latent image is formed. 2. Description of the Related Art An electrophotographic image forming apparatus such as a digital copying machine that forms an image by transferring it to a sheet is well known.

  In such an image forming apparatus, it is assumed that various types of paper are used as image forming paper, and image formation can be performed under appropriate process conditions according to each paper type.

  For example, in the invention described in Patent Document 1, transfer voltage offset data for transferring a toner image onto an image forming paper is prepared in advance in association with the paper type, and the paper type selected by the user at the time of image formation. Appropriate printing results are obtained by using offset data associated with.

JP 2002-86860 A

  However, the conventional image forming apparatus as described in Patent Document 1 has the following problems.

  In other words, in the conventional image forming apparatus, offset data regarding the transfer voltage can be prepared for each predetermined paper type. For example, the user prepares a dedicated sheet, and a desired sheet is obtained with respect to the dedicated sheet. The user cannot set process conditions such as image forming conditions.

In addition, the user may specify the image forming paper by setting the paper type and the paper amount of the paper. Conventionally, however, the user's usability is considered as a unit for specifying the paper amount. For example, since the paper amount could only be specified in g / m ² , it was inconvenient for users who are not used to this unit.

  The present invention has been made in view of the above points, and an object thereof is to provide an image forming apparatus in which a user can change setting of process conditions according to the type of paper with good operability.

In order to achieve the above-mentioned object, the present invention displays a storage unit that stores image data, an image forming unit that forms an image on a sheet based on the image data stored in the storage unit, and information. A display operation unit that accepts operation and instruction input, a paper type setting unit that can set the type and amount of paper used for image formation in the display operation unit, and image formation of the paper set by the paper type setting unit Parameter setting means for setting process condition parameters for use in the image forming process, paper designation means for designating paper used for image formation, and the parameter setting means for the paper designated by the paper designation means. in the image forming apparatus and a process control means for controlling so as to image formation by the image forming unit by using the parameters, path to the display operation unit When displaying the meter, a plurality of sheets are displayed in a state that can be specified, and the display for the sheet specified by the sheet specifying unit is displayed in a display form that is distinguishable from other unspecified sheets. In addition, corresponding to each of the plurality of sheets, the type and amount of sheets set by the sheet type setting unit, a plurality of process condition parameter items that can be set, and the parameter for each parameter item The parameters set by the setting means can be displayed, and the parameters displayed for the designated paper can be changed .

According to the present invention, in the invention according to claim 1, the parameter setting unit can display a value that is modified from a previously stored default value that can be distinguished from other values that are not modified from the default value. It is characterized by being displayed .

According to the present invention, in the invention according to claim 1 or 2 , in the display operation unit, the parameter items of the plurality of displayed process conditions are combined with the parameters set for the designated sheet . A parameter set for a sheet not designated is displayed.

According to the present invention, in the invention according to any one of claims 1 to 3 , the parameters set by the parameter setting means include a fixing temperature at the time of image formation, a transfer current, a separation voltage, and a paper feed assist fan drive control. It is at least one of them.

  According to the present invention, it is possible to provide an image forming apparatus in which the user can change the setting of process conditions according to the type of paper with good operability.

  That is, according to the present invention, it is possible for the user to grasp the process conditions (each parameter at the time of image formation) for each paper type and paper amount when setting the dedicated paper, and how to change each parameter value. It will be easier to imagine what to do. In addition, by making it possible to set the variable amount of each parameter in units of the actual control amount, it is easy to visualize the amount of change and fine adjustment is possible, shortening the setting work time and obtaining better printing results. Can be set.

  Further, according to the present invention, when setting the parameters for the dedicated paper, the unit of the amount of paper jam can be set to a unit that is easy to understand for each user, which is easy for the user to set and is a unit that the user is familiar with. Setting mistakes can also be prevented.

  Further, according to the present invention, when the user wants to optimize the output state of the dedicated paper, first, an optimum default value based on the paper type and the amount of paper jam is presented. Can be finely adjusted by the user, setting work can be easily performed, and each set parameter can be registered as dedicated paper, which can be used later.

  Further, according to the present invention, when each parameter is changed from the default value, the changed value is displayed in reverse video, for example, so that it is possible to easily confirm what is changed based on what. it can.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic sectional view showing the configuration of an embodiment of an image forming apparatus according to the present invention. In this embodiment, an electrophotographic copying machine will be described as an example of an image forming apparatus.

  Here, the configuration and basic operation of the image forming apparatus according to the present embodiment will be described with reference to FIG.

  The image forming apparatus main body 100 includes a plurality of sets of document writing units 153Y, 153M, and 153C for color image forming means, and a document writing unit 154K for monochrome image forming means. The document writing unit 153Y can form a yellow color, the document writing unit 153M can form a magenta color, the document writing unit 153C can form a cyan image, and the document writing unit 154K can form a black image.

  Corresponding to the document writing units 153Y, 153M, 153C, and 154K, respectively, photosensitive members 6Y, 6M, 6C, and 6K, charging units 7Y, 7M, 7C, and 7K, and developing units 8Y, 8M, 8C, and 8K are provided. . Further, an intermediate transfer unit 9 that is common to the color image forming unit and the monochrome image forming unit is provided. The intermediate transfer unit 9 is wound around a plurality of rollers and is rotatably supported so that the photoconductors 6Y and 6M are provided. , 6C, 6K, an endless belt-shaped intermediate transfer member 9a, and primary transfer means 9Y, 9M for transferring the image by bringing the intermediate transfer member 9a into contact with the photosensitive members 6Y, 6M, 6C, 6K. , 9C, 9K.

  Next, another configuration will be described. An original reading unit 1 functioning as a scanner unit is provided on the upper side of the image forming apparatus main body 100, and an original is set on a platen on a glass surface. Scanned and read. In the original reading unit 1, a CCD 131 to which the reflected light obtained by the scanning is input is disposed. It is desirable that an ADF (automatic document feeder) 1a is connected to the document reading unit 1 so that both sides of the document can be read.

  In addition, at the lower part of the image forming apparatus main body 100, sheet feeding trays 2, 3, and 4 are arranged, and sheet feeding units 2a, 3a, and 4a are respectively provided. A manual feed tray 5 is provided on the lateral outer wall of the image forming apparatus main body 100, and a paper feeding unit 5 a for the manual feed tray 5 is provided. As described above, since a plurality of paper feed trays and manual feed trays are provided, a plurality of types of sheets having different sizes can be used.

  A registration roller 15 is disposed on the paper feeding side of the paper feeding means 2a to 5a, and a secondary transfer roller 16 capable of pressing the paper against the intermediate transfer body 9a is further disposed on the paper roller side. A predetermined transfer current is supplied to the secondary transfer roller 16, and the toner image on the intermediate transfer body 9 a is transferred to the sheet by the secondary transfer roller 16.

  A separation means 17 to which a predetermined separation voltage is applied is disposed at the front of the secondary transfer roller 16 so that the paper can be smoothly separated from the intermediate transfer body 9a. Further, a fixing unit 18 is provided at the front side, and a paper discharge roller 19 is provided at the front side of the fixing unit 18.

  In the image forming apparatus main body 100, in the case of printing in color according to the image forming command, images formed as necessary by the document writing units 153Y, 153M, 153C, and 154K are the photoreceptors 6Y, 6M. , 6C, 6K, charging means 7Y, 7M, 7C, 7K, developing means 8Y, 8M, 8C, 8K, and primary transfer means 9Y, 9M, 9C, 9K, are transferred to the intermediate transfer member 9a. On the other hand, during monochrome printing, the image formed by the original writing unit 154K is transferred to the intermediate transfer member 9a by the photosensitive member 6K, the charging unit 7K, the developing unit 8K, and the primary transfer unit 9K.

  On the other hand, the paper required for image formation is fed from one of the paper feed trays 2, 3, 4 or the manual feed tray 5 according to the paper size and the like according to the setting (setting according to the present embodiment described later). The sheet is fed by the sheet feeding means 2a, 3a, 4a or 5a after being assisted by blowing by the fan 2b, 3b or 4b, and reaches the secondary transfer roller 16 through the registration roller 15. The sheet is pressed against the intermediate transfer member 9a by the secondary transfer roller 16 to which a transfer current of a predetermined value (a value set according to the present embodiment described later) is supplied, and the image on the intermediate transfer member 9a is transferred to the sheet. Is done. The sheet on which the image has been transferred is separated from the intermediate transfer member 9a by a separation voltage separation means 17 having a predetermined value (a value according to a setting according to this embodiment described later), and then the predetermined value (this embodiment described later). The image is fixed by the fixing means 18 having a fixing temperature of a value) according to the setting, and is discharged to the outside of the image forming apparatus main body 100 through the paper discharge roller 19.

  FIG. 2 is a block diagram showing a configuration relating to control of the image forming apparatus shown in FIG.

  As shown in FIG. 2, the image forming apparatus main body 100 includes a main body control unit 21 that performs overall control of the main body, a document reading unit 1, an image input unit 22 that reads an image from a document, and image data. An image processing unit 23 that performs arbitrary image processing such as compression and expansion, a document writing unit 153Y, 153M, 153C, and 154K, and a print control unit 25 that forms an image on image forming paper such as paper, and an image input The image data read by the unit 22, the software program executed by the main body control unit 21, the parameters necessary for the operation of the image forming apparatus main body 100, and the like, and the image forming apparatus main body 100 to the user. A display operation unit 26 for displaying information and for allowing a user to input operations, instructions, and the like to the image forming apparatus main body 100. It is.

  The software program stored in the storage unit 24 and executed by the main body control unit 21 includes a software program that controls the setting of process conditions according to the paper type of the image forming paper in the present embodiment described later. .

  The display operation unit 26 includes, for example, a touch panel type operation panel and a fixed button type operation unit. Although this display operation unit 26 is not shown in FIG. 1, it is preferable to provide the display operation unit 26 at a position on the upper stage of the image forming apparatus main body 100 where the user can easily operate. The display operation unit 26 includes a display panel unit such as a CRT, a liquid crystal display, and an EL, and an input device unit such as a touch panel and a mouse for detecting a coordinate position corresponding to the button position of the display panel. Also good. The fixed button type operation unit includes a copy start button for the user to instruct the image forming apparatus to execute copying.

  The display panel unit of the operation panel is configured by an LCD, for example, and display is set by an LCD controller in the display operation unit 26.

  In the present embodiment, on the operation panel of the display operation unit 26, an operation screen for setting process conditions according to the paper type and the like is displayed to the user under the control of the software program operating on the main body control unit 21. To do.

  Next, the operation of the present embodiment will be described in detail with reference to the drawings.

  FIG. 3 is a flowchart of a process in the image forming apparatus main body 100 of the present embodiment shown in FIG. 1 for setting process conditions for each paper type and the like. FIG. FIG. 5B is a flowchart showing operations, and FIG. 5B is a flowchart showing transition of display on the operation screen of the display operation unit 26.

  4 is a diagram showing an example of a paper type setting screen displayed on the operation screen of the display operation unit 26, and FIG. 5 is a diagram showing an example of a dedicated paper setting screen displayed on the operation screen of the display operation unit 26. is there.

  In the image forming apparatus main body 100, when the user inputs to the display operation unit 26 that process conditions corresponding to the paper type or the like are set, first, the display operation unit 26 uses the paper shown in FIG. 4 as an example. A seed setting screen is displayed (A-1).

  In the paper type setting screen of FIG. 4, a paper type selection button 30 composed of buttons assigned to each of a plurality of paper types for the user to select a paper type, and a user for selecting a paper amount is selected. A paper amount selection button 31 composed of buttons assigned to a plurality of types of paper amount values, an OK button 32 indicating completion of input, and a plurality of types of units for the user to select a unit of paper amount And a paper amount unit selection button 34 consisting of buttons assigned to the printer, and in the paper type selection button 30, a dedicated paper button 33 for the user to select a dedicated paper on which the process condition can be set. Provided.

By the way, in addition to g / m ² , there are a plurality of types of units such as pounds (COVER, BOND, INDEX, etc.), kg continuous quantities (forty-sixth edition, chrysanthemum edition), etc. Are different, or the units used in the paper to be used for image formation are different. In view of this, in the image forming apparatus main body 100 of the present embodiment, the user can select the unit of paper amount by using the paper amount unit selection button 34. The user selects a unit by pressing the button of the unit he / she wants to use among the paper amount unit selection buttons 34 on the paper type setting screen of FIG.

  Returning to the description of FIG. 3, when the user registers special paper and sets process conditions for using the special paper for image formation, the user presses the special paper button 33 on the paper type setting screen of FIG. B-1). In response to this, the main body control unit 21 displays a dedicated paper setting screen as an example in FIG. 5 on the display / operation unit 26 (A-2).

  In the dedicated paper setting screen of FIG. 5, each of the dedicated paper selection button 35 for selecting which of the dedicated paper A to the dedicated paper D is registered this time and the selected dedicated paper A to the dedicated paper D. A dedicated paper parameter selection button 36 for selecting which of the plurality of parameters of the process conditions to be adjusted, a numerical value increase button 37 for increasing the numerical value to be adjusted, a numerical value lowering button 38 for decreasing the numerical value to be adjusted, And an end button 39 for ending the parameter setting.

  In the present embodiment, a dedicated paper A button 40 for selecting the dedicated paper A is provided in the dedicated paper selection button 35, and a registration name is set in the dedicated paper parameter selection button 36. A name button 41, a paper type button 42 for setting the registered paper type, a paper basis weight button 43 for setting the registered paper weight, a fixing temperature button 44 for setting the registration fixing temperature, A transfer current button 45 for setting the registration transfer current, a separation voltage button 46 for setting the registration separation voltage, and a paper feed assist fan button 47 for setting the registration paper feed assist fan are provided. In the center of the operation screen, a set value display field 48 for displaying the set value of each parameter is provided.

  Returning to the description of FIG. 3, the user performs settings for the dedicated paper A here, and presses the dedicated paper A button 35 on the dedicated paper setting screen of FIG. 5 (B-2). In response to this, the main body control unit 21 reverse-displays the dedicated paper A button 35 on the dedicated paper setting screen (A-3).

  Next, it is assumed that the user inputs the name of the dedicated paper setting, and presses the name button 41 on the dedicated paper setting screen (B-3). In response to this, the main body control unit 21 reversely displays the name button 41 on the dedicated paper setting screen (A-4). At this time, the other dedicated paper parameter selection buttons 36 are returned to the non-inverted display.

  In this state, when the user inputs a name (for example, using a keyboard not shown) (B-4), the main body control unit 21 displays the input name in the set value display field 48 (A-5).

  When the user presses the paper type button 42 on the dedicated paper setting screen to set the paper type (B-5), the main body control unit 21 receives this and receives the paper type button 42 on the dedicated paper setting screen. Is highlighted (A-6). At this time, the other dedicated paper parameter selection buttons 36 are returned to the non-inverted display.

  In this state, the user selects the paper type from among the options prepared in advance using the numerical value increase button 37 and numerical value decrease button 38 (B-6), and the main body control unit 21 receives this and selects it. The selected paper type is displayed in the set value display field 48 (A-7).

  When the user presses the paper amount button 43 on the dedicated paper setting screen in order to set the paper amount, the main body control unit 21 receives this and reversely displays the paper amount button 43 on the dedicated paper setting screen. The other dedicated paper parameter selection buttons 36 return to the non-inverted display.

  In this state, the user uses the numerical value increase button 37 and the numerical value decrease button 38 to select the amount of paper jam from the options prepared in advance (B-7), and the main body control unit 21 receives this and selects it. The amount of paper curled is displayed in the set value display field 48 (A-8). At this time, as the unit of the paper amount, the unit of the paper amount previously selected by the user with the paper amount unit selection button 34 on the paper type setting screen of FIG. 4 is used.

  The above is the paper type setting means that allows the user to set the type and the amount of paper used for image formation by the display operation unit.

  In this way, when the paper type and paper amount of the dedicated paper A are selected, the main body control unit 21 receives this, and sets default values prepared in advance based on the selected paper type and paper amount. The value is displayed in the set value display field 48 for the parameter (A-8).

  Here, examples of default values of the parameters are shown in FIGS. 7 (a) to 7 (e).

  FIG. 7A shows parameters (fixing temperature value, transfer current value, separation current (separation DC current) value, paper feed assist fan for each paper basis weight when the paper type is plain paper, colored paper, or index paper. FIG. 7B is a table showing the default values of the respective parameters for each paper basis weight when the paper type is coated paper. FIG. 7C is a table showing the default values of each parameter for each paper basis weight when the paper type is recycled paper, and FIG. 7D is a table when the paper type is color paper. FIG. 7E is a table showing the default values of the respective parameters for each paper basis weight when the paper type is high-quality paper.

  In the image forming apparatus main body 100 of the present embodiment, for example, FIG. 7A to FIG. 7E are stored in the storage unit 24, and will be described later when parameters for dedicated paper are set. As described above, these default values are displayed and adjusted by the user, thereby realizing easy adjustment and easy understanding. In addition, the display of the value to be adjusted uses the absolute value, not the relative value from any offset, so that the adjustment is easy and easy to understand.

  3A and 3B, among the parameters such as the fixing temperature value, the transfer current value, the separation current (separation DC current) value, and whether or not the paper feed assist fan is driven, the fixing is performed. The case of adjusting the temperature value is shown in step (B-8, A-9, B-9, A-10).

  That is, in step (B-8), when the user presses the fixing temperature button 44 on the dedicated paper setting screen to set the fixing temperature, the main body control unit 21 receives this and fixes on the dedicated paper setting screen. While the temperature button 44 is highlighted, the other dedicated paper parameter selection buttons 36 return to the non-reversed display (A-9).

  In this state, the user sets the numerical value of the fixing temperature using the numerical value increase button 37 and numerical value decrease button 38 (B-9), and the main body control unit 21 receives this and sets the fixed fixing temperature value. Is displayed in the set value display field 48 (A-10).

  Note that values that have been modified from the default values by the user are displayed in reverse video, displayed in different colors, or knitted so that they can be distinguished from values that have not been modified from other default values. It is desirable to make the display form different from others, such as displaying characters with different shapes and sizes.

  The numerical value to be raised or lowered by pressing the numerical value increasing button 37 or the numerical value decreasing button 38 once may be, for example, one by one, five by one, or a predetermined unit. The predetermined unit is preferably a unit of an actual control amount in the image forming apparatus main body 100. In this way, it is possible to make the change amount easy to imagine and fine adjustment can be made, so that the setting work time can be shortened and the setting for obtaining a better printing result can be made.

  Similarly, the user sets other parameters as necessary, and presses the end button 39 when the setting is completed (B-10). In response to this, the main body control unit 21 displays the paper type setting screen of FIG. 4 on the display operation unit 26 (A-11).

  The parameter setting means for setting the process condition parameters when the user uses the paper set by the paper type setting means by the display operation unit for image formation has been described above.

  Next, the setting of each parameter will be described in more detail with reference to FIG. In the process of FIG. 6, when changing the paper type and the paper amount, a confirmation display as to whether or not it is actually performed is performed. In this respect, the processes shown in FIGS. 3A and 3B are performed. The example is different from the example.

  FIG. 6 is a flowchart of the process in the image forming apparatus main body 100 of the present embodiment shown in FIG. 1 and registering the value of each parameter set by the user.

  The main body control unit 21 determines whether or not a paper type change instruction has been given on the operation screen of FIG. 5, that is, the dedicated paper setting screen (C-1). A warning is displayed to confirm whether or not to the user (C-2). If there is an instruction from the user to change the paper type (C-3), each parameter is calculated from the current paper type and the paper amount. This is set to a fixed default value and displayed (C-4).

  The confirmation / warning is performed as in step (C-2) because each parameter is set to the default value when the paper type or paper amount is changed. Even if it happens, it will be cleared, so confirmation and warning are made just in case. The same applies to step (C-6) described later.

  Thereafter, when the end button 39 is pressed (C-21), the display of the display operation unit 26 is returned to the operation screen of FIG. 4, that is, the paper type setting screen (C-22), and the process ends.

  If it is not an instruction to change the paper type in step (C-1), it is determined whether there is an instruction to change the amount of paper (C-5). Is displayed to the user (C-6), and if the user still gives an instruction to change the paper amount (C-7), each parameter is determined from the current paper type and paper amount. The value is set and displayed (C-8).

  Thereafter, when the end button 39 is pressed (C-21), the display of the display operation unit 26 is returned to the operation screen of FIG. 4, that is, the paper type setting screen (C-22), and the process ends.

  If it is not an instruction to change the amount of paper in step (C-5), it is determined whether there is an instruction to change the fixing temperature (C-9). If there is an instruction to change, a change in fixing temperature value (for example, (The image is stored in the storage unit 24 and used in image formation) (C-10), and the fixing temperature value is displayed in the set value display field 48. When the numerical value is different from the default value, The display portion of the numerical value in the set value display field 48 is highlighted (C-11).

  Thereafter, when the end button 39 is pressed (C-21), the display of the display operation unit 26 is returned to the operation screen of FIG. 4, that is, the paper type setting screen (C-22), and the process ends.

  If it is not an instruction to change the fixing temperature in step (C-9), it is determined whether there is an instruction to change the transfer current (C-12). If there is an instruction to change, a change in the transfer current value (for example, When the transfer current value is stored in the storage unit 24 and used in the image formation) (C-13), the transfer current value is displayed in the set value display field 48, and the value is different from the default value. The display portion of the numerical value in the set value display field 48 is highlighted (C-14).

  Thereafter, when the end button 39 is pressed (C-21), the display of the display operation unit 26 is returned to the operation screen of FIG. 4, that is, the paper type setting screen (C-22), and the process ends.

  If it is not an instruction to change the transfer current in step (C-12), it is determined whether there is an instruction to change the separation voltage (C-15). If there is an instruction to change, the change of the separation voltage value (for example, If the separated voltage value is displayed in the set value display field 48 and the numerical value is different from the default value, it is stored in the storage unit 24 and used in image formation (C-16). The display portion of the numerical value in the set value display field 48 is highlighted (C-17).

  Thereafter, when the end button 39 is pressed (C-21), the display of the display operation unit 26 is returned to the operation screen of FIG. 4, that is, the paper type setting screen (C-22), and the process ends.

  If it is not an instruction to change the separation voltage in step (C-15), it is determined whether there is an instruction to change the setting of the paper feed assist fan (change whether or not to drive the fan during paper feed for image formation) ( C-18) When there is a change instruction, the setting of the paper feed assist fan is changed (for example, stored in the storage unit 24 and used for image formation) (C-19). The setting of the fan is displayed in the setting value display field 48, and when the setting is different from the default value, the display portion of the setting in the setting value display field 48 is highlighted (C-20).

  Thereafter, when the end button 39 is pressed (C-21), the display of the display operation unit 26 is returned to the operation screen of FIG. 4, that is, the paper type setting screen (C-22), and the process ends.

  Each parameter set as described above is set by the user specifying the name set with the name button 41 on the display operation unit 26 according to the paper used for image formation. 21 is reflected in image formation. This is because the user designates the paper to be used for image formation, and the image forming unit uses the parameters set by the parameter setting means for the paper designated by the paper designation means. Process control means for controlling image formation.

  In the above-described embodiment, the fixing temperature, the transfer current, the separation voltage, and the paper feed assist fan have been described as the process condition parameters. However, the present invention is not limited to this, and other parameters are adjusted. It does not matter if it is a thing. For example, the sheet conveyance speed, the sheet conveyance interval, and the like may be adjusted. In the drive control of the paper feed assist fan, not only ON / OFF, but also the intensity of the air flow may be adjusted.

1 is a schematic cross-sectional view illustrating a configuration of an embodiment of an image forming apparatus according to the present invention. FIG. 2 is a block diagram illustrating a configuration relating to control of the image forming apparatus illustrated in FIG. 1. FIG. 2 is a flowchart of a process in the image forming apparatus main body 100 of the present embodiment illustrated in FIG. 1 for setting process conditions for each paper type and the like, and (a) is a flowchart illustrating a user operation. Here, (b) is a flowchart showing display transition on the operation screen of the display operation unit 26. 7 is a diagram illustrating an example of a paper type setting screen displayed on an operation screen of the display operation unit 26. FIG. 7 is a diagram illustrating an example of a dedicated paper setting screen displayed on an operation screen of the display operation unit 26. FIG. FIG. 3 is a flowchart of processing in the image forming apparatus main body 100 according to the present embodiment shown in FIG. 1 for registering values of parameters set by a user. (A) is a table showing the default values of each parameter for each paper basis weight when the paper type is plain paper, colored paper or index paper, and (b) is the case when the paper type is coated paper. (C) is a table showing the default values of each parameter for each paper basis weight when the paper type is recycled paper. d) is a table showing default values of each parameter for each paper basis weight when the paper type is color paper, and (e) is a table for each paper basis weight when the paper type is fine paper. It is a table | surface figure which shows the default value of a parameter.

Explanation of symbols

1 Document reading unit 1a ADF
2, 3, 4 Paper feed tray 2a, 3a, 4a Paper feed means 2b, 3b, 4b Paper feed assist fan 5 Manual feed tray 5a Paper feed means 6Y, 6M, 6C, 6K Photoconductor 7Y, 7M, 7C, 7K Charging means 8Y, 8M, 8C, 8K Developing means 9 Intermediate transfer unit 9a Intermediate transfer member 9Y, 9M, 9C, 9K Primary transfer means 15 Registration roller 16 Secondary transfer roller 17 Separating means 18 Fixing means 19 Paper discharge roller 131 CCD
153Y, 153M, 153C Original writing unit 154K Original writing unit 100 Image forming apparatus main body 21 Main body control unit 22 Image input unit 23 Image processing unit 24 Storage unit 25 Print control unit 26 Display operation unit 30 Paper type selection button 31 Paper weight selection button 32 OK button 33 Dedicated paper button 34 Paper volume unit selection button 35 Dedicated paper selection button 36 Dedicated paper parameter selection button 37 Numeric value up button 38 Numerical value down button 39 End button 40 Dedicated paper A button 41 Name button 42 Paper type button 43 Paper basis Volume button 44 Fixing temperature button 45 Transfer current button 46 Separation voltage button 47 Paper feed assist fan button 48 Setting value display field

Claims (8)

Storage means for storing image data;
An image forming unit that forms an image on a sheet based on image data stored in the storage unit;
A display operation unit that displays information and receives operations and instruction inputs;
A paper type setting unit capable of setting the type and amount of paper used for image formation in the display operation unit;
Parameter setting means for setting parameters of process conditions when the paper set by the paper type setting means is used for image formation;
A paper designating means for designating paper used for image formation;
Process control means for controlling the image forming section to form an image on the paper designated by the paper designating means using the parameters set by the parameter setting means;
In an image forming apparatus comprising:
When displaying parameters on the display operation unit, a plurality of sheets are displayed in a state that can be specified, and the display for the sheet specified by the sheet specifying unit is distinguishable from other unspecified sheets. Displayed in a display form, and corresponding to each of the plurality of sheets, the sheet type and amount set by the sheet type setting unit, a plurality of process condition parameter items that can be set, and each parameter item And the parameter set by the parameter setting means can be displayed,
An image forming apparatus, wherein a parameter displayed for a designated sheet can be changed . Said parameter setting means, for the value corrected from the default values stored in advance, to claim 1, characterized in that displayed in distinguishable display mode and a value that is not corrected by other said default value The image forming apparatus described. Displayed in the display operation unit, the parameter fields of the plurality of process conditions is displayed, the parameters set for the paper that are not specified in conjunction with the set parameters to the designated sheet The image forming apparatus according to claim 1 , wherein the image forming apparatus is an image forming apparatus. Any the parameters set by the parameter setting means, the fixing temperature at the time of image formation, the transfer current, according to claim 1, wherein the separation voltage and feeding assisting fan is at least one of the drive control whether the image forming apparatus according to (1). Storage means for storing image data;
An image forming unit that forms an image on a sheet based on image data stored in the storage unit;
A display operation unit that displays information and receives operations and instruction inputs;
A paper type setting unit capable of setting the type and amount of paper used for image formation in the display operation unit;
Parameter setting means for setting parameters of process conditions when the paper set by the paper type setting means is used for image formation;
A paper designating means for designating paper used for image formation;
Process control means for controlling the image forming section to form an image on the paper designated by the paper designating means using the parameters set by the parameter setting means;
In an image forming apparatus comprising:
When displaying parameters on the display operation unit, a plurality of sheets are displayed in a state that can be specified, and the display for the sheet specified by the sheet specifying unit is distinguishable from other unspecified sheets. A step of displaying in a display form, a paper type and weight set by the paper type setting means, a plurality of process condition parameter items that can be set, and a parameter for each of the plurality of papers A step of displaying a parameter set by the parameter setting means for an item;
A process that allows changing the displayed parameters for the specified paper;
Parameter displaying method of the image forming apparatus characterized by having a. Wherein said parameter setting means, for prestored been modified from its default value, characterized in that it comprises a step of displaying at distinguishable display mode and a value that is not corrected by other said default value Item 6. A parameter display method for an image forming apparatus according to Item 5 . Displayed in the display operation unit, the parameter fields of the plurality of process conditions is displayed, the parameters set for the paper that are not specified in conjunction with the set parameters to the designated sheet 7. The parameter display method for an image forming apparatus according to claim 5, further comprising a step of: 8. The apparatus according to claim 5, wherein the set parameter is at least one of a fixing temperature, a transfer current, a separation voltage, and a paper feed assist fan drive control during image formation. The parameter display method of the image forming apparatus as described.

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