Abstract: An optical device has a semiconductor laser for emitting a laser beam, and a photodetector having a photodetecting face to receive the laser beam emitted from the semiconductor laser. The photodetector is relatively disposed with respect to the semiconductor laser such that a normal line of the photodetecting face crosses an emission direction of the laser beam with an angle in a range of not less than 60 degrees but less than 90 degrees.

Abstract: A leading fiber penetrates through a holding element and is optically coupled to an optical element placed in a package. An external cord fiber longer than the leading fiber passes a through hole of a glass sleeve and is connected to the leading fiber to form an optical fiber composed of the leading fiber and the external cord fiber. The holding element is inserted into the glass sleeve to place a fusion-spliced portion between the leading fiber and the external cord fiber in the through hole of the glass sleeve. UV hardening resin hardened by receiving ultraviolet rays is packed and hardened in the through hole of the glass sleeve to cover the fusion-spliced portion with the UV hardening resin and the glass sleeve.

Abstract: A transmission line member is constituted as a mirostrip line comprising a conductor line formed on a top surface and a conductor layer formed over an entire back surface. A high frequency signal input to an electrode of a package is transmitted via a bonding wire, the transmission line member, and a bonding wire, to an electrode of a semiconductor laser. As dielectric loss is slight, the transmission line member can transmit a high frequency signal with little loss, thereby improving the high frequency characteristics of a signal to be input to the semiconductor laser.

Abstract: A transmission line member is constituted as a mirostrip line comprising a conductor line formed on a top surface and a conductor layer formed over an entire back surface. A high frequency signal input to an electrode of a package is transmitted via a bonding wire, the transmission line member, and a bonding wire, to an electrode of a semiconductor laser. As dielectric loss is slight, the transmission line member can transmit a high frequency signal with little loss, thereby improving the high frequency characteristics of a signal to be input to the semiconductor laser.

Abstract: The present invention relates to a sheet finisher, which receives sheets from an image forming apparatus, such as an electro-photographic copying machine, a printer, a facsimile, etc., to align and bind the sheets. There is described a sheet finisher which includes a conveyance roller pair to convey the sheets, an intermediate stacker to stack the sheets, an aligning device to align the sheets stacked on the intermediate stacker, a binder to bind the sheets stacked and aligned on the intermediate stacker, an ejector to convey and eject the sheets bound by the binder, a driver to drive the aligning device, a controller to control the driver and an overlapped sheets conveying device to grip and convey two sheets. In the sheet finisher, the controller controls the driver in a manner such that the aligning device aligns an initial one sheet stacked on the intermediate stacker under a first aligning condition, while the aligning device aligns two overlapped sheets under a second aligning condition.

Abstract: A finisher includes: a conveyor for conveying sheets; an intermediate stacker on which conveyed sheets are stacked; a stapler for stapling a stacked package of sheets; a sheet delivery device for delivering the stapled package of sheets; an up-and-down sheet exit tray on which the delivered package of sheets is stacked and which can move up and down; a driving device for driving the up-and-down sheet exit tray; an upper limit detector for detecting an upper limit position of a surface of the stapled package of sheets which is stacked on the up-and-down sheet exit tray; and a controller for controlling the driving device, wherein when a mode to staple a package of sheets which is not larger than a predetermined size and not larger than a predetermined number of sheets, is set, the controller temporarily withdraws the up-and-down sheet exit tray from the upper limit to a lower position before the stapled package of sheets has been delivered onto the up-and-down sheet exit tray; and when the sheet delivery devic

Abstract: A semiconductor laser module with an optical isolator. A semiconductor laser module includes a substrate provided with a first optical waveguide and a second optical waveguide, a semiconductor laser diode mounted in front of the first optical waveguide on the substrate, and an optical isolator between the first optical waveguide and the second optical waveguide.

Abstract: A sheet feeding apparatus for picking up, aligning, and feeding single sheets from a stack of a plurality of such sheets. The apparatus includes a driving means for the pick up, separator, and sheet feeder having a driving motor with a coupling in the drive path which is capable of providing a delay period between forward and backward rotations of the motor. There is a torque regulator between the coupling and a reverse roller which interrupts the driving force for a predetermined time. The apparatus also includes a control which stops the registration rollers while the single sheet collides with the circumferential surfaces thereof for alignment and, upon reversal of the driving motor, the sheet is fed while the reverse roller first stops for the predetermined time and then rotates in a direction opposite to the direction of feeding. Thus, the single sheets are aligned and double feeding is prevented.

Abstract: A conveyor receives and holds a recorded sheet discharged from an image forming apparatus, the sheet is conveyed along a path and another conveyor is provided along the path at a predetermined distance from the first conveyor to further convey the sheet. There is a shifting device between the two conveyors for holding and individually shifting groups each containing a prescribed number of sheets, perpendicularly to the conveying direction of the sheets. There is a delivery tray for receiving the sheets delivered by the other conveyor.

Abstract: In a sheet finisher for use with an image forming apparatus, for receiving and aligning sheets discharged from the image forming apparatus, for then stapling the sheets together and for ejecting the stapled sheets to an exit tray, the sheet finisher includes: an intermediate stacker for receiving, aligning and stapling sheets discharged from the image forming apparatus; a conveyor for superimposing a first sheet and a second sheet in a sheet conveyance path upstream of the intermediate stacker, and then for conveying the superimposed sheets to the intermediate stacker to form a succeeding set of sheets to be stapled which follows a preceding set of sheets to be stapled in the intermediate stacker; a driver for driving the conveyor; and a controller for controlling the driver with respect to an operation timing of the driver.

Abstract: An apparatus for sorting sheets on a tray in which a stacking position of sheets is changed for each set number of sheets to one of different stacking positions on the tray, includes a movable pressing member coming in contact with a discharging roller on its low position so that a discharging speed of the sheet is reduced, a movable lower guide plate so that the lower guide plate is positioned lower than a upper portion of the discharging roller on its low position; a sensor to detect a passage of a sheet; and a driving device to move the lower guide plate and the pressing member in response to a signal from the sensor.

Abstract: In a semiconductor laser device including a stack of semiconductor laser chips, each semiconductor laser chip includes opposite upper and lower surfaces, an upper electrode disposed on a portion of the upper surface, and a lower electrode disposed on a portion of the lower surface. Two adjacent semiconductor laser chips in the stack are connected such that the lower electrode of an upper laser chip is bonded to the upper electrode of a lower laser chip with solder. Since the upper electrode (lower electrode) is disposed on a portion of the upper surface (lower surface) of each laser chip, i.e., it is not disposed over the entire upper surface (lower surface) of the laser chip, the solder hardly flows over the side surface of the laser chip, so that unwanted short-circuiting between the upper electrode and the lower electrode of the laser chip is avoided.

Abstract: A sheet finishing apparatus for finishing sheets ejected from an image forming apparatus, which has a sheet conveyor, a stacker, a sheet stopper at a lower end of the stacker, a movable alignment plate on at least one side edge position of the sheets. The apparatus further includes a driver for driving the movable alignment plate, a stapler.

Abstract: A light modulator module includes a submount; a semiconductor laser and a semiconductor light modulator having a signal input terminal integrated on the submount, the semiconductor laser outputting laser light and the semiconductor light modulator modulating the laser light in response to a high-frequency signal input to the signal input terminal; a strip line for transmitting the high-frequency signal, the strip line having first and second terminals, the second terminal receiving the high-frequency signal; a terminating resistor terminating the strip line and having opposed first and second ends with the second end being grounded; a first wire connecting the signal input terminal of the semiconductor light modulator to the first terminal of the strip line; and a second wire connecting the first end of the terminating resistor to the signal input terminal of the semiconductor light modulator.

Abstract: A recording sheet finisher in use with an image forming apparatus such as a copier. The recording sheet finisher includes a stacker for stacking recording sheets, an aligning member for aligning the bundle of the recording sheets on the stacker, a counter for counting a number of the recording sheets bundled on the stacker, and a controller for controlling the aligning member so that the aligning member aligns the bundle of recording sheets after a first predetermined time period after the last one of the recording sheets is conveyed onto the other ones when the number of recording sheets bundled on the stacker is 25 or more, and aligns the bundle after a second predetermined time period when the number is not less than 25.

Abstract: A sorter distributes plural sheets to plural sheet holding bins. The sorter includes the plural sheet holding bins for holding the plural sheets, in which inserting portions of the plural sheet holding bins are aligned in a line in a predetermined direction; a conveyance belt for conveying the plural sheets along the line; a distributor, that is reciprocally movable along the line, for distributing the plural sheets to the plural sheet holding bins; motorized pulleys for winding and unwinding a wire member; the wire member being connected between the motorized pulleys and the distributor; nipping apparatus for nipping and for conveying each of the plural sheets, the nipping apparatus being positioned between the conveyance belt and the wire member.

Abstract: A recording sheet finishing apparatus connected with an image forming apparatus, in which recording sheets delivered from the image forming apparatus are stapled and the stapled sheets are ejected. The apparatus includes a plurality of stackers each having at least one stapler. The apparatus further includes a control means in which the recording sheets delivered from the image forming apparatus are stapled alternately by the staplers for each set of recording sheets and after that, each of the stapled set of recording sheets are delivered from the stapler to a delivery sheet tray, where a conveyor belt which transports the stack is operated at two different speeds with an initial speed followed by a faster speed to prevent damage to the stack.

Abstract: A sorter provided with a stapler for use with an image forming apparatus, in which there are provided a plurality of bins each for accommodating various widths of recording sheets delivered from the image forming apparatus, the center of the sheets being positioned in the center of the bins. An aligner aligns the accommodated sheets by pushing the sides of the sheets toward a reference stop wall on each of the bins, and a casing to house the bins is integrated into a unit. The casing is movable in a direction at right angles to a feeding direction of the sheets, and is moved to correspond with the width of the sheets. The home position of the casing is set to a position where the minimum width of sheets are accommodated.

Abstract: The invention provides a sorting apparatus equipped with a stapler in which a plurality of plate-shaped bins for stacking sheets thereon are attached in tandem at regular intervals to a fixed shaft so that each of said bins rotates around the shaft between a sorting position to stack sheets and a stapling position to provide the stacked sheet to the stapler.

Abstract: An apparatus which includes a feeding device for feeding a document onto a document platen on which the document is irradiated by a light source to obtain a copy image and a discharging device for discharging the irradiated document from the document platen. The apparatus includes a housing unit shaped in the form of a plate for covering the document platen; a hinge for pivotally mounting the housing unit on the document platen, and first, second and third sub-housings made to protrude upwards from the top surface of the housing unit. The first sub-housing is disposed on one side of the housing unit and incorporates the feeding device. The second sub-housing is disposed on the opposite side to the one side and incorporates the discharging device. The third sub-housing is disposed on a side between the one side and the opposite side and incorporates both the hinge and driving mechanism for both the feeding device and the discharging device.