Abstract: A laser driving method is adapted for driving a plurality of laser emitting devices. A first current to be supplied to each of the plurality of laser emitting devices is always generated. A plurality of second currents controlled according to a control signal supplied from the outside are generated when necessary. The plurality of second currents are supplied to the respective laser emitting devices under supply of the respective first currents, thereby making the laser emitting devices emit respective laser beams. The plurality of laser emitting devices are caused to emit the laser beams in time division at predetermined timing to detect each of emitted light amounts by one laser monitor. Adjustment is made to at least one of the first current and the second current supplied to each of the laser emitting devices according to a plurality of detected light amounts detected.

Abstract: An image forming apparatus is arranged to form an image with laser light emitted from a semiconductor laser source, and is constructed so as to protect the laser source from a breakdown, by regulating electric current flowing to the laser source no matter when an adjusting circuit for adjusting the light amount of the semiconductor laser source is apt to supply the electric current that could break the laser source, to the laser source.

Abstract: A laser driving method is adapted for driving a plurality of laser emitting devices. A first current to be supplied to each of the plurality of laser emitting devices is always generated. A plurality of second currents controlled according to a control signal supplied from the outside are generated when necessary. The plurality of second currents are supplied to the respective laser emitting devices under supply of the respective first currents, thereby making the laser emitting devices emit respective laser beams. The plurality of laser emitting devices are caused to emit the laser beams in time division at predetermined timing to detect each of emitted light amounts by one laser monitor. Adjustment is made to at least one of the first current and the second current supplied to each of the laser emitting devices according to a plurality of detected light amounts detected.

Abstract: An image forming apparatus, including a driving circuit for a multichip laser chip, which can limit or interrupt emission of laser light sources in accordance with a result of comparison of an optical output of each laser light source with a limiting value during time-division control is provided. The apparatus includes a plurality of laser light source, a light-amount control device for controlling an optical output of a laser beam from each of the plurality of laser light sources to a constant amount of light by performing time division processing, and a light detection device for detecting optical outputs of the plurality of laser light sources. The light detection device includes sensor units whose number is smaller than the number of the plurality of laser light sources.

Abstract: A laser driving apparatus for driving a plurality of laser beam sources includes a plurality of laser beam sources, a photodetector for detecting amounts of laser beams emitted from the plurality of laser beam sources, a plurality of current sources for driving the plurality of laser beam sources, a plurality of switches respectively interposed between the plurality of laser beam sources and the plurality of current sources, a plurality of controllers for controlling light amounts of the plurality of laser beam sources by comparing the light amounts detected by the photodetector with a reference value and controlling current amounts of the plurality of current sources in accordance with the comparison values, a plurality of sample/hold circuits respectively interposed between the photodetector and the plurality of controllers, and timing adjustment device for outputting a plurality of timing signals of a first type for controlling the plurality of switches and a plurality of timing signals of a second type fo

Abstract: A memory management control device and a memory management control method capable of preventing run away of an image processing apparatus caused by a rewrite to a memory, are provided. In rewriting a program stored in a flash memory 402 of a controller 400 included in an image processing apparatus, an operating state detector 500 detects the operating state of the image processing apparatus and transmits the detection result to an external apparatus 9. On the basis of this detected operating state, the external apparatus 9 performs rewrite control for the flash memory 402. If the image processing apparatus is in operation, or is in an intermediate state, an abnormal state, or a wait state, a rewrite action is executed after the state is canceled.

Abstract: A binding apparatus for binding sheet materials with a covering material having a heat-adhesive agent at its bottom portion by bonding the bottom portion of the covering member and edges of the sheet materials includes a holder for holding the covering material and the sheet materials sandwiched by the covering material; a heater for heating the adhesive agent; a switch for switching power supply to the heater; a detector for detecting setting of the covering material in the holder; and a temperature controller. The temperature controller supplies power to provide a first temperature when the covering material is not set in the holder, supplies power to the heater to provide a second temperature higher than the first temperature when the covering material is set in the supporting member, and supplies the power to the heater to provide the first temperature after the covering member is taken out from the holding member.

Abstract: A book bind device has a supplier for supplying a front sheet used in a book bind operation of sheet members, a conveyor for guiding a plurality of sheet members on which an image is formed into the front sheet, and book binder for performing the book binding operation by coupling the supplied front sheet and the bundle of sheet members therein.

Abstract: An image recording apparatus includes an input key for inputting a binding mode for binding a plurality of recording sheets; an image forming until for forming an image on the recording sheet, the image forming unit forming the image while providing a predetermined blank space when the binding mode is inputted from the input key; and a binding unit for binding a plurality of recording sheets ejected out from the image forming unit by adding a predetermined cover sheet when the binding mode is inputted from the input key.

Abstract: An image forming apparatus has a book binding mechanism for performing a book bind operation using front sheets of a plurality of sizes which can bind a bundle of sheet members recorded by said image forming apparatus, and have limitations on the numbers of recorded sheet members to be bound. The image forming apparatus further has output means for outputting sheet number data according to a bundle of sheet members; judge means for judging whether or not the sheet number data output from said output means is larger than a range of the limitation; detect means for, when the judged result from said judge means is affirmative, dividing the sheet number data, and detecting a divided sheet number value which falls within the range of the limitation; and control means for controlling to perform a book bind operation in units of the sheet numbers detected by said detect means.

Abstract: There is an image forming apparatus in which images of a plurality of originals set on the original plate glass are individually exposed, scanned and read, and the read images are synthesized and recorded at arbitrary positions on a recording paper. This apparatus also has a device to record the images on the front and back surfaces of the recording paper. The synthetic recording and the front and back surface recording can be arbitrarily switched and selected. This apparatus is provided with a trimming function to erase unnecessary image portions of the images, a masking function to prevent the shaded portions from being recorded on an paper, and the image shift function to adjust the synthesizing positions of the images on the recording paper for every image.

Abstract: There is an image forming apparatus in which images of a plurality of originals set on the original plate glass are individually exposed, scanned and read, and the read images are synthesized and recorded at arbitrary positions on a recording paper. This apparatus also has a device to record the images on the front and back surfaces of the recording paper. The synthetic recording and the front and back surface recording can be arbitrarily switched and selected. This apparatus is provided with a trimming function to erase unnecessary image portions of the images, a masking function to prevent the shaded portions from being recorded on the paper, and an image shift function to adjust the synthesizing positions of the images on the recording paper for every image.

Abstract: An image forming apparatus is disclosed which comprises an image forming member for forming a plurality of images onto one sheet, a setting member for setting the number of sheets to be formed with images and a control member for controlling the image forming member in order to execute formation of the images for the number of sheets which can be loaded in a tray. The image forming member has the tray for temporarily loading the sheet on which a part of the images has been formed and further forms another part of the images onto the sheet loaded in the tray, when the number of sheets which is set by the setting member is larger than the number of sheets which can be loaded in the tray a plurality of the above operations are repeated.