摘要:
A CPU for a motor driving apparatus of an image forming apparatus excites a predetermined phase winding among plural phases of a stepping motor for a predetermined time period. Thereafter, before a rotation of the motor is started, it is judged whether there is the possibility of deviating a positional relationship between a rotor and a stator of the motor from a positional relationship determined by the excitation of the predetermined phase winding for the predetermined time period, by an external force, on the basis of judgement whether a door is opened for jam treatment. If the possibility of deviation is judged, the predetermined phase winding among plural phases of the stepping motor is excited again for a predetermined time period.
摘要:
In a presentation mode, it is aimed to omit an extra setting procedure for setting for OHP and ordinary sheets and a change of the setting, and to provide an excellent presentation mode setting environment capable of starting the setting from any sheet. When a presentation mode is set, it is selected which of the OHP and ordinary sheets the setting input for image formation should be performed to, a setting screen for inputting image formation setting information according to the selected sheet is displayed by a CPU on a display unit, the setting information input from the setting screen is stored in a nonvolatile memory, and then the information being subjected to the setting input is stored in the nonvolatile memory and the setting screen is changed to a setting screen for other sheet by the CPU even if the setting information for any sheet is being input.
摘要:
An image processing apparatus has a mechanism for setting a desired magnification of a reproduced image, a display for displaying the selected magnification, an optical system for forming an image on a transfer medium, and a control unit. The control unit controls the optical system so as to form the desired magnified image even when the setting of a desired magnification changes. The control unit can also include a first timer for effecting a timing operation based on a predetermined time irrespective of input magnification and a second timer for effecting a timing operation based on the input magnification with a predetermined time relation to the first timer. In addition, the apparatus can include a first device for directly setting a magnification for image formation corresponding to a position of a movable member in accordance with a converted digital value and a second device for setting a predetermined specified magnification irrespective of the position of the movable member, or a device for selecting a retained magnification or a magnification corresponding to the position to the movable member changed before completion of image formation, without changing the position of the movable member after the completion of the image formation.
摘要:
An image heating apparatus includes a heater having an electrode; a film in sliding contact with the heater, wherein a toner image on a recording material is heated by heat from the heater through the film; a connector connected to the heater to supply electric energy to the heater; the connector comprising an electrically conductive contact member in contact with the electrode, the contact member encloses at least the heater.
摘要:
A film type fixing device includes a rotatable endless film; film position detecting device for detecting a position, in a direction perpendicular to a rotational direction, of the film; error detecting device for detecting error of a position of the film when the output of the film position detecting device is out of a predetermined range; and discriminating device for discriminating whether to back up error information or not on the basis of the output of the film position detecting device, when the error detecting device detects the error.
摘要:
There is a control apparatus using a plurality of microcomputers for controlling an apparatus. This control apparatus comprises a first microcomputer for controlling loads and a second microcomputer, wherein the first microcomputer transmits predetermined information to the second mircocomputer and discriminates the reply data which is send therefrom. When they coincide, the first microcomputer executes a predetermined control operation. When the second microcomputer detects an error in the information transmitted from the first microcomputer, the second microcomputer allows the first microcomputer to stop the control of the loads, thereby realizing the safe control of the loads. On the other hand, predetermined priorities may be given to the microcomputers. When the microcomputer having a high priority is reset, all of the lower significant microcomputers are reset, thereby minimizing a damage when abnormality occurs. A main program malfunction of the microcomputer may be detected by a checking means provided in a sub-routine program, thereby enabling the control to be restarted safely.
摘要:
When the image forming apparatus shifts to the reduced power consumption mode, the image forming apparatus transmits an agency request command for requesting the server apparatus to respond to a status request, on behalf of the image forming apparatus, and the latest status thereof to the server apparatus. When there is a change in the status of the image forming apparatus in the reduced power consumption mode, the image forming apparatus transmits a changed status thereof to the server apparatus. The server apparatus receives a status request sent from an information processing apparatus connected to the network to the image forming apparatus, on behalf of the image forming apparatus. The server apparatus responds to the information processing apparatus in response to the status request, based on the status received beforehand from the image forming apparatus.
摘要:
When the image forming apparatus shifts to the reduced power consumption mode, the image forming apparatus transmits an agency request command for requesting the server apparatus to respond to a status request, on behalf of the image forming apparatus, and the latest status thereof to the server apparatus. When there is a change in the status of the image forming apparatus in the reduced power consumption mode, the image forming apparatus transmits a changed status thereof to the server apparatus. The server apparatus receives a status request sent from an information processing apparatus connected to the network to the image forming apparatus, on behalf of the image forming apparatus. The server apparatus responds to the information processing apparatus in response to the status request, based on the status received beforehand from the image forming apparatus.
摘要:
There is provided an image forming apparatus which is capable of responding to a status request with the minimum possible energy consumption even when the image forming apparatus is in a sleep state, to thereby achieve energy conservation. A main-chip microcomputer Q701 responds to an externally input status request when the image forming apparatus is in a normal standby mode, and enters an inoperative state where it does not respond to the externally input status request when the image forming apparatus is in a reduced power consumption mode. A 1-chip microcomputer Q702 responds to the externally input status request on behalf of the main-chip microcomputer Q701 when the image forming apparatus is in the reduced power consumption mode.
摘要:
An image forming apparatus includes a heater for generating heat upon reception of electric energy; a film movable with a recording material having an unfixed image; and a pressure roller for forming a nip with the heater, with the film interposed therebetween; wherein the pressure roller starts to rotate at the same time as a main power switch of the apparatus is turned on.