摘要:
The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.
摘要:
There is provided an image forming apparatus capable of setting up a tab sheet mode-operating and configuring environment in which an effective tab sheet mode output can be obtained by simple selecting and designating operations, A designating device designates a type of sequence of tabs of each of tab sheet bundles set in the sheet feed devices such as cassettes 21a-21d and multi manual feed tray 27 etc. A determining device is responsive to a user's instruction for feeding tab sheets and selection of a combination of one of the sheet feed devices and one of the sheet discharge devices such as face-up discharge tray 2 and face-down discharge tray 3, for determining whether a combination of the selected sheet feed device, the selected sheet discharge device, and the type of sequence of tabs of the tab sheet bundle set in the selected sheet feed device is valid or not.
摘要:
An image forming apparatus includes a fixing unit that performs thermal fixation for a sheet on which a developer has been transferred, and a controller that sets a temperature of the fixing unit at one of a first temperature for fixing a developer expressing a monochrome image on a sheet and a second temperature for fixing developers expressing a color image on a sheet, wherein if a color page is contained in an image forming job, the controller sets the temperature of the fixing unit at the second temperature and starts the image forming job.
摘要:
An image forming apparatus including a status detecting unit for detecting a status of each portion of the apparatus, a driving unit for driving each portion of the apparatus, an input unit having an input data storing unit for storing input data detected by the status detecting unit, an output unit having an output data storing unit for storing data to be output for driving the driving unit, a controlling unit connected to the input data storing unit and the output data storing unit for controlling the whole image forming operation of the apparatus including a control of the driving unit, in accordance with a status detected with the status detecting unit or a predetermined rule, a network for transferring data between the controlling unit and a plurality of the input or output units, and a timing control unit for controlling the timing of data transfer over the network, wherein the timing control unit includes a plurality of timing control modes and selects one of the timing control modes in accordance with an instruction from the controlling unit. The plurality of timing control modes of the timing control unit includes a first timing mode of performing data transfer in accordance with a timing generated by the controlling unit and a second timing mode of performing data transfer independently from the timing generated by the controlling unit. The second timing mode is a mode of performing data transfer at a predetermined time interval.
摘要:
An image fixing apparatus includes a heater having heat generating resistors producing heat by being supplied with electrical energy; a film movable together with a recording material, wherein a toner image on the recording material is heated by heat generated by the heat generating resistors through the film; an energizing device for energizing the heat generating resistor with an AC voltage; a temperature detecting element for detecting a temperature of the heater; and a control device, responsive to an output of the temperature detecting element, to control a phase of the AC voltage.
摘要:
An apparatus for forming an image onto a transfer sheet a plurality of times includes an image forming unit for forming an image onto a sheet which is conveyed; first and second conveying units for conveying the sheet from the image forming unit to the image forming unit, wherein the second conveying unit stops the first sheet conveyed by the first conveying unit at a predetermined position and, after the second sheet which is conveyed subsequently to the first sheet conveyed by the first conveying unit was conveyed to a predetermined position on the first sheet, the second conveying unit conveys the first and second sheets in a partially overlapped state and separates the first sheet and supplies the separated first sheet to the image forming unit; and a sheet detecting sensor for detecting the front edge of the sheet which is conveyed by the first conveying unit. After the first sheet was conveyed by the first conveying unit by a first predetermined amount after the front edge of the first sheet had been detected by the sensor, the second conveying unit conveys the first sheet conveyed by the first conveying unit and stops the first sheet at the predetermined position, and after the second sheet was conveyed by the first conveying unit by a second predetermined amount different from the first predetermined amount after the front edge of the second sheet had been detected by the sensor, the second conveying unit conveys the first and second sheets.
摘要:
An image fixing apparatus includes a heater which is stationary during an image fixing operation, a linear heat generating layer and a film movable in sliding contact with the heater in which a toner image on a recording material is heated by heat from the heater through the film. The heater produces amounts of heat which are different in a direction transverse to a direction of movement of the recording material by varying the resistance distribution of the linear heat generating layer.
摘要:
The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.
摘要:
The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.
摘要:
In an image forming apparatus for forming an image in accordance with control codes stored in a plurality of memory media, when the control codes stored in the plurality of memory media to control the image forming apparatus is rewritten, rewrite execution codes adapted to execute rewrite of the control codes are transferred to predetermined one of the plurality of memory media from an external apparatus, and rewrite of the control codes is performed in accordance with the transferred rewrite execution codes.