Abstract: An image forming apparatus, in accordance with the present invention, forms a color image on an image bearing member. The image forming apparatus includes a charging device for electrically charging the image bearing member, an exposing device for exposing a light beam on the image bearing member so as to form a latent image on the charged image bearing member corresponding to image data to be formed, and a developing device for developing the latent image formed on the image bearing member with a developing agent including toner.

Abstract: A transformer (202) has a bobbin (2) which has an inner portion (104) supporting an inner electrical winding (140) and having a magnetic core recess. The inner portion is located within an outer portion (4) supporting an outer electrical winding (40). The inner portion further has an end with a termination connected to the inner winding, an annular recess (126) in which the inner winding is situated, and a channel (132) communicating between the termination end of the inner portion and a remote end of the annular recess. The channel is positioned radially inwardly of the first annular recess and accommodates a portion of the inner winding. By providing the channel radially inwardly of the annular recess, winding wire can extend between the termination end of the inner portion and the remote end of the annular recess across the annular recess without significantly increasing the size of the inner portion and without increasing the gap between the inner and outer portions.

Abstract: An image-forming apparatus includes a main body divided into a first part and a second part, an imaging unit, and a detecting device. The first part is pivotably provided to the second part to open the apparatus. The imaging unit is detachably mounted in a predetermined station of the first part. The detecting device detects whether an image forming operation can be executed or not, and is actuated only when the first part is closed to the second part with the presence of the imaging unit in the predetermined station of the first part.

Abstract: An image forming apparatus comprises a copy number setting button for setting the number of copies, magnification setting button for setting the magnification, first storing memory for storing the set number of copies, second storing memory for storing the set magnification, a single display for selectively displaying the set number of copies and the set magnification, a display mode switching key for switching the display mode to the copy number display mode or the magnification display mode, and display mode control for switching the display mode on the basis of input by the above display mode switching key. There is also provided a clear key for clearing the set contents and clear control for clearing the set contents of the display mode currently set out of the copy number display mode and the magnification display mode when key input is provided by the above clear key.

Abstract: An apparatus for forming an image of a document on a photoreceptor includes a charging device for charging the photoreceptor so as to form an image region, an eliminating device for eliminating a charge on the photoreceptor to form a non-image region, and a scanner for moving from a stop position to scan a document with an exposure light so that a latent image, corresponding to an image of the document, is formed on the image region of the photoreceptor. The scanner also moves backward and stops at the stop position. A position signal corresponding to a predetermined position of the scanner is generated by a signal device. A timer starts counting a time responsive to the position signal. The timer produces a first and second timing signal after the scanner stops at the stop position.

Abstract: A fuser for an image-forming apparatus includes a fusing roller which is replaceable in a cartridge. The fusing roller cartridge includes a cover for covering an access opening providing access to the fusing roller. The cover is openable, either directly by an operator to a latched condition, by the apparatus in response to insertion of the cartridge, by the operator before insertion but held in an uncovering position by the receiving apparatus or by suitable mechanism in the apparatus after insertion of the cartridge. Preferably, the cover closes early in the removal motion so that the fingers of the removing operator cannot touch a hot fusing roller. A metallic heat shield between the fusing roller and the cartridge housing helps prevent the housing from becoming too hot to touch.

Abstract: A method of manufacturing a coil for a transformer and in particular a high voltage transformer in which the starting end of a wire with a bondable thermoplastic sheet is electrically conductively connected to an axially slit sleeve of non-magnetic metal which sleeve is placed on a rotary winding tool to form an essentially cylindrical wire winding directly on the sleeve with the end faces of the sleeve extending beyond the winding. Heat is applied to the winding to bond the individual turns to each other. One end of the sleeve carrying the winding is placed on the bottom of a casting mold and the end of the wire remote from the starting end is connected to a terminal. A casting compound is introduced into the mold to anchor the connecting terminal. The outside of the casting compound is provided with an electrically conductive casing which is electrically connected to the sleeve.

Abstract: An electrophotographic printing apparatus includes a paper conveyor path, a photosensitive drum arranged on the paper conveyor path, a conveyor unit for conveying paper along the conveyor path, an image forming unit for forming an electrostatic latent image on the photosensitive drum, developing the electrostatic latent image by depositing a developer on the electrostatic latent image, and transferring the developer image onto paper, and a fixing unit, arranged on the paper conveyor path, for fixing the transferred image on the paper by heat and pressure. The printing apparatus further comprises a control circuit for detecting overheating of the fixing unit and commanding the conveyor unit to stop conveyance of paper after confirming that no paper is present in the fixing unit when the fixing unit is detected to be overheating.

Abstract: A compact printer for liquid toning having a second transfer roller (19) located above a larger, first transfer roller (15). Paper is stored in an lower internal tray (23), moved vertically past the transfer roller (15), and then imaged and fixed at the nip of the second transfer roller and a fixing roller (21) as it is delivered to the top (39) of the printer.

Abstract: A vapor cooled current lead for a superconducting device located in a cryostat includes a normal conductor section extending from ambient conditions inward to an intermediate point, and a composite lead having a ceramic high temperature superconductor core with a metallic sheath extending between the normal conductor section and the superconducting device, preferably in a helical path to reduce heat leak by conduction. The metallic sheath is stripped away at spaced intervals, preferably adjacent the low temperature end of the composite lead, and the gaps are filled with a filler which provides mechanical strength for the core and reduces thermal conduction. A flow of cryogen vapor directed by a tubular housing maintains the high temperature superconducting material below its critical temperature, and cools the normal conductors.

Abstract: An improved toner cartridge and contact which pertains to the recycling of the cartridge is disclosed by providing an alternate or additional way of completing the electrical bias connection to the magnetic feed roller by the addition of a simple contact, which is attached to a doctor blade, having a finger extending to ride onto the surface of the magnetic roller. This contact can be attached at either end, or both ends, of the doctor blade thereby connecting the doctor blade to the feed roller, the contact being held in place by the hold-down screws of the doctor blade.

Abstract: A high frequency transmission line structure has a reference potential plane conductor layer, a plurality of strip line conductors, a dielectric material layer interposed between the reference potential plane conductor layer and the strip line conductors and a shielding conductor unit provided between adjacent two strip line conductors. The shielding conductor unit includes first and second slender conductor portions extending substantially in a direction parallel with a lengthwise direction of the strip line conductors and connected to be integral with each other at their first ends. The second ends of the first and second slender conductor portions being electrically connected with the reference potential plane conductor layer.

Abstract: A developing apparatus having a supporting frame for supporting plural developing units. The supporting frame is movable to present a selected one of the developing units to a development operating position. The supporting frame is provided with positioning members for positioning the developing units. The positioning members are fixed on the movable frame in the manner that the position of the positioning member is adjustable. Each of the developing units is faced to an image bearing member at the operating position without contact to the image bearing member.

Abstract: A proximity detector has a casing containing a probe (4) and a printed circuit (3), the upper end of the casing being closed by a plug (35) provided with a filling orifice (14) and with connecting-pins (36). The nozzle of a plastic injector (13) is fitted in position within the filling orifice, said nozzle being provided with two adjacent ducts. A hardenable resin is caused by centrifugation to flow into the casing via a first duct while simultaneously driving-out the air which is present within the casing via the second duct, thus ensuring rapid and efficient filling. When the casing has been filled and the resin has hardened, the injector (13) is cut-off in close proximity to the plug (35). Complete filling can be checked by inspecting the surface appearance of the two leading portions of solidified resin flux which are thus visible at the level of the orifice (14).

Abstract: An image forming apparatus so composed that it can be furnished with a plurality of developers, can change the developer opposed to the photosensitive body by integrally moving the corresponding developers and can compensate for the position of the corresponding developer at the compensating position thereof while changing developers. Furthermore, in the image forming apparatus, the developers are moved by a motor, the position of the developers is only compensated for when the predetermined compensating position is on a shortest moving path when changing one of the developers to another developer and the developers are always changed through the shortest moving path.

Abstract: An image fixing apparatus for fixing a toner image on an image supporting material. A guiding member for guiding the image supporting material is provided without contact to an image fixing rotatable member but with a predetermined small clearance. In order to maintain the predetermined clearance, spacers are provided at positions outside the maximum image forming region. The rotatable image fixing member is prevented from being damaged, and in addition, the image supporting material is prevented from being wrapped on the rotatable member.

Abstract: A transformer is disclosed which has a primary and a secondary winding disposed concentrically around a core via a flanged bobbin. Each winding has a conductor wire which is doubly or, preferably, triply sheathed with insulating tapes of different widths. The first or inmost insulating tape is wound overlappingly in a first direction around the conductor wire without being bonded thereto. The second or intermediate insulating tape, less in width than the first, is wound overlappingly in a second direction, opposite to the first direction, over the first insulating tape and bonded thereto via a preformed adhesive layer on the second insulating tape. The third or outmost insulating tape, still less in width than the second, is wound overlappingly in the first direction over the second insulating tape and bonded thereto via a preformed adhesive layer on the third insulating tape. The ratio of the overlap of each tape to the tape width becomes progressively less from the inmost toward the outmost tape.

Abstract: Fusing apparatus for an electrographic printer, includes an abhesive belt for carrying and contacting a recorded image, a low temperature heater to fuse the image, and an assembly for synchronously moving a sheet in contact with the belt past the heater for an extended dwell time so that the toned image attains a fusing temperature as it resides in thermal contact with the heater along an extended transport path. The belt has a release coating of low surface free energy. Image transfer or fusing may be accomplished at sufficiently low belt temperatures that a single belt may be employed to effect imaging, toning, image transfer and fusing steps without impairing heat-sensitive toning assemblies, photoconducting elements, or other temperature-sensitive parts of the printer.

Abstract: An image forming apparatus includes image forming device for forming an unfixed image on a recording material; a fixing device for fixing the unfixed image on the recording material, the fixing device including a heater which is stationary in use, a film in sliding contact with the heater and a pressing member cooperative with the film to form a nip for receiving the recording material, and an opening portion for opening the apparatus for permitting jam clearance operation of the recording material in the fixing device. The pressing member and the film are separated from each other in association with opening of the opening portion.

Abstract: An electrophotographic printer with fixing of the final image on paper (27) by first preheating the image side of the paper on a plate (25) which is in a straight path with the nip of a heated transfer roller (17) and a heated backing roller (21). This permits high temperatures need for fixing liquid toners and avoids paper curling.