摘要:
An electrophotographic apparatus is provided with a fixing device having the first through third fixing rollers for forming the first fixing section by contacting the first and second fixing rollers as well as forming the second fixing section by contacting the second and third fixing rollers, the first fixing section being temperature-adjusted in relation to a first copying mode, the second fixing section being temperature-adjusted in relation to a second copying mode. Either the first or second fixing section is temperature-adjusted according to the order of priority in such a manner that after the completion of the temperature adjustments, temperature adjustments with respect to the other fixing section is successively carried out.
摘要:
A cleaning unit used for cleaning the surface of a recording medium in an image forming apparatus, the cleaning unit having a head being moved so as to contact with and separate from the recording medium on the basis of the assessment of preset image forming conditions such as paper size, document size, and copy magnification, and a control section for moving the cleaning head at a detected appropriate time, wherein the cleaning head is released so as to avoid the dispersion of toner that is likely to spoil the image.
摘要:
A developing apparatus which includes a plurality of developing units individually provided with sensors for detecting amount of toner accommodated therein, includes a judging device for judging whether or not sensor outputs of other developing units are below a replenishable amount when a sensor output of one developing unit falls below a replenishing requiring amount, and a replenishing display device for urging toner replenishment, based on the result of the above judgement, with respect to the developing unit having the sensor output below the replenishing requiring amount and the developing unit whose sensor output is below the replenishable amount.
摘要:
An electrophotographic apparatus is provided with a developing device accommodating a plurality of developer tanks and a system for preventing erroneous mounting of these developer tanks. The developer tanks contain respective developers different in color from each other and are detachably mounted in respective predetermined mounting portions of the developing device. The system includes a connector formed on each of the developer tanks, a fixed connector formed on each of the mounting portions of the developing device and a controller for outputting at least one discrimination signal and judging whether or not the discrimination signal is inputted into the controller through at least one set of connectors. The connectors in each set are electrically connected with each other when each developer tank is properly mounted in its predetermined mounting portion of the developing device.
摘要:
A copying apparatus having a prescanning function for obtaining density data to adjust copy parameters includes a correction function which eliminates the data obtained from a portion of a predetermined color, from the density data detected on a prescanning process. The density data can be restricted within a predetermined range. The predetermined range can be easily set by the user.
摘要:
A developing apparatus which includes a plurality of developing units individually provided with sensors for detecting amounts of toner accommodated therein, includes a judging device for judging whether or not sensor outputs of other developing units are below a replenishable amount when a sensor output of one developing unit falls below a replenishing requiring amount, and a replenishing display device for urging toner replenishment, based on the result of the above judgement, with respect to the developing unit having the sensor output below the replenishing requiring amount and the developing unit whose sensor output is below the replenishable amount.
摘要:
A fixing unit for an image forming apparatus, for fixing a toner image transferred onto a recording sheet, which includes a fixing section having a heat roller and a pressure roller, includes a detector for detecting the time when the recording sheet reaches between the heat roller and the pressure roller; and a controller for controlling the moving speed of the fixing section to be gradually decreased when the recording sheet reaches the fixing section.
摘要:
An apparatus (10) for controlling a location of an image on a conductive transfer belt (15), the conductive transfer belt having a hole (14) and for transferring a plurality of images formed on a photosensitive belt (11), the apparatus includes a transparent photosensor (16) for sensing a location of the hole and for supplying a signal indicating the sensed location, and a microprocessor (CPU) for controlling a relative location of the conductive transfer belt with respect to the photosensitive belt, the microprocessor serving to transfer a plurality of images formed on the photosensitive belt onto different locations on the conductive transfer belt in accordance with the signal.
摘要:
A data processing apparatus provided in a copying machine is provided for eliminating the need for replacing the data such as adjusting values in case of replacing a memory board in the copying machine. The data processing apparatus provided in a copying machine which is used when a first memory for storing electrical signals indicative of adjusting values needed in operation of the copying machine is replaced by a second memory, the data processing apparatus includes means for printing-out on a sheet image informations representative of the adjusting values stored in the first memory, means for reading the image informations on the sheet, and means for converting the read image informations to electrical signals indicative of adjusting values and for storing the converted electrical signals in the second memory.
摘要:
To provide a print data processing system, a printer, and a data processing indicating apparatus, for storing print data and a print history and notifying update of the print data, which is not necessarily registered separately in order to receive a notification of update. The printer stores name data of print data, identification data of a data processing indicating apparatus (or an external apparatus) that has sent storage indicating data of the print data, and identification data of a data processing indicating apparatus (or an external apparatus) that has sent print indicating data of the print data; judges if the print data is updated or not on the basis of the stored data; and notifies each data processing indicating apparatus (or the external apparatus) that has sent print indicating data of the print data of update of the print data.