Abstract: A fixing device according to this invention includes a heating roller, a heater driver, a thermistor, and a CPU. The heating roller has a heater and heats a recording sheet. The heater driver drives the heater. The thermistor detects a surface temperature of the heating roller. The CPU stops an operation of the heater driver when the surface temperature of the heating roller becomes higher than a predetermined temperature and, thereafter, causes the thermistor to perform detection of the surface temperature of the heating roller for a predetermined time period and issues an alarm about occurrence of a first abnormality when the surface temperature of the heating roller fails to drop in the predetermined time period.

Abstract: To provide a display input device including: a display controller for displaying a control frame on a display portion; a touch input detector for detecting a touch input to the touch panel portion; and a setup item displaying portion for superimposing setup items on the control frame in accordance with the position of the touch input while the touch input is being detected by the touch input detector.

Abstract: An image processing apparatus including: an image processing section that processes an original image, and outputs the processed original image; an operating section that a user operates; a reading-and-displaying section disposed in the operating section, and has a function of reading control information as an image and has a function of displaying the read control information; an instruction input section disposed in the operating section, and receives an instruction regarding an original image; and a controller that controls operations of the image processing section, the reading-and-displaying section, and the instruction input section, wherein the controller instructs the reading-and-displaying section to read the control information, acquires the control information from a result read by the reading-and-displaying section, and instructs the image processing section to process the original image and to output the processed original image, based on the acquired control information and/or the instruction re

Abstract: It is determined whether or not a jammed document is necessarily returned to a document tray when a jam of the document is caused within a carrier path and, then, the elevation operation of the document tray is controlled on the basis of its result of the determination. Since the jammed sheet of which reading has not been completed should be returned to the document tray, the document tray is moved down. Since the jammed sheet of which reading has been completed should not be returned to the document tray, the document tray is maintained at a position as it is. When the apparatus stops due to the carrying jam, a time required for processing the document is shortened.

Abstract: In a sheet feeding apparatus, a contact-type sensor for detecting sheet-like documents stored in document tray is separated into upper document detector and a lower document detector arranged at upper and lower sides of the document tray, respectively. The sheet-like documents are detected separately with two actuators of the corresponding detectors. Accordingly, the requirement of a prior art for having a contact of the sensor increased in length in order to detect the sheets from a maximum to zero in the sheet storing unit can be eliminated.

Abstract: In accordance with the state of a document tray upon powering on a power source, the elevation operation of a document tray is controlled. In the case that the document tray is located not at the highest position, not at the lowest position, but at a middle position upon powering on the power source, the document tray is allowed to remain at the middle position as it is without performing the elevation of the document tray. In the case that the document tray is located at the highest position, the document tray is moved down. By reducing the wasteful operation (the initial operation) after powering on the power source, it is possible to reduce the operation time and the efficient sheet processing can be realized.

Abstract: When a document detector provided on a document tray is ON (S11: YES), a controller judges whether or not a document is of a standard size, on the basis of a document size table stored in a storing unit (S12). When the document is of a standard size (S12: YES), after a predetermined time has elapsed (S13: YES), the controller elevates/lowers the document tray on the basis of a detection output of a guide-in roller position detector and causes the document tray to wait in a state capable of supplying and conveying the topmost layer of documents immediately. An image forming apparatus thus constructed can make a judgment as to whether or not to execute supply and conveyance of documents, according to the mount state of the documents.

Abstract: In a sheet feeding apparatus, a contact-type sensor for detecting sheet-like documents stored in document tray is separated into upper document detector and a lower document detector arranged at upper and lower sides of the document tray, respectively. The sheet-like documents are detected separately with two actuators of the corresponding detectors. Accordingly, the requirement of a prior art for having a contact of the sensor increased in length in order to detect the sheets from a maximum to zero in the sheet storing unit can be eliminated.

Abstract: It is determined whether or not a jammed document is necessarily returned to a document tray when a jam of the document is caused within a carrier path and, then, the elevation operation of the document tray is controlled on the basis of its result of the determination. Since the jammed sheet of which reading has not been completed should be returned to the document tray, the document tray is moved down. Since the jammed sheet of which reading has been completed should not be returned to the document tray, the document tray is maintained at a position as it is. When the apparatus stops due to the carrying jam, a time required for processing the document is shortened.

Abstract: In accordance with the state of a document tray upon powering on a power source, the elevation operation of a document tray is controlled. In the case that the document tray is located not at the highest position, not at the lowest position, but at a middle position upon powering on the power source, the document tray is allowed to remain at the middle position as it is without performing the elevation of the document tray. In the case that the document tray is located at the highest position, the document tray is moved down. By reducing the wasteful operation (the initial operation) after powering on the power source, it is possible to reduce the operation time and the efficient sheet processing can be realized.

Abstract: For performing double-side printing, an image forming apparatus forms an image on one side of a sheet and then reverses the sheet if the sheet has not been reversed, forms an image on the other side of the sheet and then reverses the sheet if the sheet has been reversed once, and performs idle conveyance in which an image is not formed on a sheet and then discharges the sheet if the sheet has been reversed twice. According to the image forming apparatus and a method of forming an image by this apparatus, procedures of image formation by a user can be prevented from becoming troublesome and the sheets can be discharged in order of the originals.

Abstract: When a document detector provided on a document tray is ON (S11: YES), a controller judges whether or not a document is of a standard size, on the basis of a document size table stored in a storing unit (S12). When the document is of a standard size (S12: YES), after a predetermined time has elapsed (S13: YES), the controller elevates/lowers the document tray on the basis of a detection output of a guide-in roller position detector and causes the document tray to wait in a state capable of supplying and conveying the topmost layer of documents immediately. An image forming apparatus thus constructed can make a judgment as to whether or not to execute supply and conveyance of documents, according to the mount state of the documents.

Abstract: Provided are a user interfacing display apparatus having improved operability without confusing the user as to setting displayed on a pop-up screen, and an image forming apparatus. When a copy ratio key as a detail setting key is selected on an LCD as a display section provided in the user interfacing display apparatus mounted on an image forming apparatus, the pop-up screen is displayed. At the same time, a display state of an interruption key is changed, so as to be displayed to inform that the interruption key is unavailable. While the pop-up screen is being displayed, a user is not allowed to select the interruption key. Thus, for example, on contrary to a case where process is switched to an interruption mode while the pop-up screen is being displayed, there will be no confusion as to the detail setting displayed on the pop-up screen before switching to the interruption mode.

Abstract: An image forming apparatus has a job management unit for reserving a plurality of jobs, and a control panel 7 for concurrently displaying reservation statuses of four jobs among those reserved by the job management unit. A main status area 82a displays reservation statuses of the first three jobs in the queue and a reservation status of the last job which is newly reserved. The reservation status of the newly reserved last job is displayed preferentially in place of that of the fourth job in the queue.

Abstract: For performing double-side printing, an image forming apparatus forms an image on one side of a sheet and then reverses the sheet if the sheet has not been reversed, forms an image on the other side of the sheet and then reverses the sheet if the sheet has been reversed once, and performs idle conveyance in which an image is not formed on a sheet and then discharges the sheet if the sheet has been reversed twice. According to the image forming apparatus and a method of forming an image by this apparatus, procedures of image formation by a user can be prevented from becoming troublesome and the sheets can be discharged in order of the originals.

Abstract: Icons (displayed in the pictorial outline display area and in the finished output style display area) for displaying the conditions in accordance with the input of conditions through setting keys(keys displayed in setting key display area) integrally display multiple number of conditions input through setting keys in a multiple number of setting frames. A condition pictorially represented corresponding to the setting key arranged in the input-active setting frame is made visually distinguishable from that pictorially represented corresponding to the setting key arranged in an input-inactive setting frame.

Abstract: Icons(displayed in the pictorial outline display area and in the finished output style display area) for displaying the conditions in accordance with the input of conditions through setting keys(keys displayed in setting key display area) integrally display a multiple number of conditions input through setting keys in a multiple number of setting frames. A condition pictorially represented corresponding to the setting key arranged in the input-active setting frame is made visually distinguishable from that pictorially represented corresponding to the setting key arranged in an input-inactive setting frame.

Abstract: When zoom keys for changing a magnification by a predetermined unit each time, not only setting of a fixed magnification is bothersome, but also setting a magnification in the vicinity of the fixed magnification is very troublesome. A zoom up key and a zoom down key for changing a magnification by a predetermined unit, e.g., 1%, each time to set to a desired magnification are provided. By operating either one of the keys, a set magnification is zoomed up or down, while displaying that condition in an LCD display which serves as a display portion. While the set magnification shifts, when the set magnification becomes a fixed magnification or a magnification close to the same, a sub message as well is displayed which indicates an optimal combination of original and paper sizes with which processing at that fixed magnification is possible. Referring to the displayed sub message, the desired magnification is set by operating the zoom up key or the zoom down key.

Abstract: An operation guidance display apparatus displays dynamic images of operations which are necessary for a display section provided to an image forming apparatus in the case where jam, out of toner, etc. occur in sheet passing sections of the image forming apparatus, and an operation by an operator is required. As a result, even if the operator first performs the necessary operations or it is difficult for the operator to understand the operations, the operator can safely and securely performs the operations. Therefore, operability of the image forming apparatus can be improved by providing the apparatus of the present invention to the image forming apparatus.

Abstract: When zoom keys for changing a magnification by a predetermined unit each time, not only setting of a fixed magnification is bothersome, but also setting a magnification in the vicinity of the fixed magnification is very troublesome. A zoom up key and a zoom down key for changing a magnification by a predetermined unit, e.g., 1%, each time to set to a desired magnification are provided. By operating either one of the keys, a set magnification is zoomed up or down, while displaying that condition in an LCD display which serves as a display portion. While the set magnification shifts, when the set magnification becomes a fixed magnification or a magnification close to the same, a sub message as well is displayed which indicates an optimal combination of original and paper sizes with which processing at that fixed magnification is possible. Referring to the displayed sub message, the desired magnification is set by operating the zoom up key or the zoom down key.