Abstract: A developing head in which liquid developer and gas are applied by a feeding system to the photosensitive surface of an electrophotographic material for electrophotographic apparatus via a developing chamber, a space being formed between the framed opening of the developing mask at its outer peripheral surface and an opposing photosensitive surface to prevent leakage of the liquid developer by capillarity between the photosensitive surface and the framed opening of the developing mask at its mouth abutting the photosensitive surface, a valve interposed between the passageways for feeding liquid developer and gas respectively in order to prevent the liquid developer from flowing into the passageway for supplying gas, and a pressure reduction apparatus to apply negative pressure between the photosensitive surface and the mouth of the framed opening when the electrophotographic material is advanced from one frame to another.

Abstract: A planar magnetic transducer uses thin film technology to form a coil on a ceramic substrate. A relatively powerful magnet is positioned adjacent the substrate so a changing magnetic reluctance adjacent to the coil can be detected by a voltage change at the coil.

Abstract: A roller 1 which serves to press a copy sheet against a heating plate of a fixing device in an electrophotographic copier is equipped with a clinging plastic tape 3 wound spirally around the roller. The end portions 6,6' of the roller are provided with clamping means. The tape 3 has holes and pointed ends. The roller ends have different lengths, and over the longer roller end 10 a clamping sleeve 4 is slipped and is mounted on a shaft, thus forming the end portion 6'. The clamping sleeve has a tapped hole penetrating its wall and provided with a set screw which is screwed down to lock the clamping sleeve, which is otherwise rotatable about the shaft, in a position in which the tape is wound tightly around the roller surface.

Abstract: A clamp-down bracket secures a C-shaped housing of a transformer to a concrete foundation. The bracket includes a C-shaped first portion for engaging the side of an opening in the foundation and a second portion coupled to the first portion for engaging the C-shaped housing. The bracket may further include a bolt that is inserted into a threaded hole in the C-shaped portion of the bracket for forcing the second portion of the bracket to engage the C-shaped housing. One or more brackets can be used to secure the C-shaped housing to the foundation.

Abstract: A heat fixing device for use in a copying apparatus, including a heating roller, a pressing roller, an ambient temperature sensor for detecting ambient temperature of the copying apparatus, a decision device for making a decision as to whether or not the ambient temperature is not more than a predetermined temperature, and an intermittent drive device for intermittently driving the heating roller and the pressing roller in a waiting mode of the copying apparatus when the ambient temperature is not more than the predetermined temperature.

Abstract: An electrostatic copying apparatus having defined therein a copying paper conveying passage extending from a paper feeder to a paper receiver through a transfer zone and a fixing zone. In the transfer zone, a toner image on an electrostatographic material is transferred to a copying paper, and then fixed in the fixing zone.

Abstract: A photoconductive screen includes a conductive screen substrate with many perforations therein, an insulating layer formed substantially on one side of the screen substrate, a biasing conductive layer substantially covering the insulating layer, and a photoconductive layer substantially covering the conductive layer. An image of electrostatic charges can be formed on the screen to control a flow of charged particles for formation of an electrostatic latent image in a chargeable layer under exposure to the flow of charged particles.

Abstract: An inductive transmitter has a housing 1 within which two pole shoes 8, a permanent magnet 7 arranged between the pole shoes 8 and a coil 6 surrounding the permanent magnet 7 and the pole shoes 8 are arranged. The two ends of the coil 6 are connected with an output connection from which a cable 16 is conducted outwardly from the housing 1. The electric components, such as the coil 6, output connection pieces 9, 9' and output connection contacts 23, 23', are arranged in the watertight inside of the housing 1, while the permanent magnet 7 and the pole shoes 8 are received in a pot-shaped recess 14 developed communicatingly outside the inside of the housing in a coil support.

Abstract: In m.sub.1 magnification copy mode, a photosensitive member, at the first exposure station is exposed to the light image of an original existing at the first illumination position through a first lens array. In m.sub.2 magnification copy mode, the photosensitive member, at the second exposure station, is exposed to the light image of the original existing at the second illumination position through a second lens array. The original is moved through the first and second illumination positions in sequence while the photosensitive member is moved through the first and second exposure stations in the order named. Registration rollers for feeding transfer materials to a transfer station is operated with different timings in the m.sub.1 magnification and m.sub.2 magnification modes, these timings being different from each other by a period of time which corresponds to the spacing between the first and second exposure stations.

Abstract: A copying machine has a document table on which a document is to be placed, an exposure lamp for exposing the document placed on the document table, a scanning circuit for reciprocating the exposure lamp with respect to the document so as to optically scan the document and an image forming unit for forming an image of the document in response to light reflected by the document scanned by the exposure lamp. Switches are provided for detecting that the exposure lamp is located at a scanning start position, a scanning end position and a position removed by a predetermined distance from the scanning start position. The exposure lamp is turned off at the scanning end position and is turned on when the exposure lamp is located at the position removed by the predetermined distance from the scanning start position before the exposure lamp returns to the scanning start position in the continuous copying mode.

Abstract: A compact reader/printer that has an electrophotographic copier which copies image data recorded on a recording medium on a copy medium for enlargement. The optical path extending from the recording medium is guided by a mirror to an exposure surface. The mirror is provided in inclination to the exposure surface at a location close thereto. The reader/printer is advantageous in that the illumination toward the exposure surface is made uniform by a filter, a mirror for varying reflection by location, a partial shading plate or the like. They are inserted in the optical path to diminish the intensity of light in the region where the distance between the mirror and the surface is narrow.

Abstract: In an electrophotographic copying machine wherein a photoconductive drum and at least one of the image forming elements, such as developing unit and cleaner, arranged around the drum are assembled into a unit which is removable from and fittable into the machine main body axially of the drum, the machine having a separating belt being provided on the lower frame of the main body, and a device for moving the separating belt into or out of contact with the drum, the device including a lever member supporting the separating belt and permitting the separating belt to move into or out of contact with the drum, and a cam member attached to the unit, which engages with said lever member so as to move the separating belt out of contact with the drum in operative relation with the movement of the unit when the unit is withdrawn and installed.

Abstract: A laser beam printer operatively responsive to a printing signal fed from a host control unit includes a printing unit for executing a xerographic process, a laser beam scanning unit, a fusing unit, a process control unit for controlling said printing unit, the laser beam scanning unit, and the fusing unit, and a signal processing unit for receiving the printing signal from the host control unit. When the host control unit begins to supply a printing signal to the signal processing unit, the signal processing unit supplies a provisional start signal to the process control unit. Upon receiving the provisional start signal, the process control unit controls the printing unit, the scanning unit, and the fusing unit to bring them into a ready state.

Abstract: A control system is provided to automatically alter the control of a machine to respond to a different number of pitches or images that the machine can manage at one time. A flag in memory is monitored and in response to the flag, the machine control is adjusted to manage a different number of pitches during the operation of the machine and to provide clock signals for the timed actuation of events in each of the pitches.

Abstract: An apparatus in which a plurality of sheets are attached to one another to form a booklet thereof. The sheets are compiled to form a set which is then advanced to a stapling apparatus and/or a binding apparatus. The set of sheets may be secured to one another by either stapling, binding, or a combination of both.

Abstract: Heat and pressure fusing apparatus for fixing toner images. The fusing apparatus is characterized by the separation of the heat and pressure functions such that the heat and pressure are effected at different locations on a thin flexible belt forming the toner contacting surface. A pressure roll cooperates with a stationary mandrel to form a nip through which the belt and copy substrate pass simultaneously. The belt is heated such that by the time it passes through the nip it's temperature together with the applied pressure is sufficient for fusing the toner images passing therethrough.

Abstract: A method and apparatus for making a two-dimensional copy from either a two-dimensional or three-dimensional object is provided. In making a two-dimensional copy from a three-dimensional object, the object is submerged in the liquid contained in a container having a transparent bottom portion to which the object is brought into contact by placing a cover member thereon. The object is then exposed through the transparent bottom portion thereby the projected image of the object viewed through the transparent bottom portion is reproduced on a sheet of copy paper.

Abstract: A recording apparatus includes an image bearing or forming drum which is driven to rotate in a predetermined direction at constant speed. As the drum rotates, an image is formed on its peripheral surface electrostatically or electrophotographically. The image, developed or undeveloped, on the drum is then transferred to a transfer medium with the stiffness of the transfer medium being adjusted prior to the transfer. The drum has a diameter which is small enough for the transfer medium to be separated away from the drum by its own stiffness after image transfer, thereby allowing to dispose of an extra separating device and to make the whole apparatus compact in size and simple in structure.

Abstract: A document handling apparatus/copy sheet processor/finishing apparatus arranged as an integrated system to produce bound copy sheets at high speed but with minimum mechanical activity by double exposing each document sheet, producing successive copy sheets in accordance with the exposure, distributing the successive copy sheets alternately into receiving trays and utilizing a set transport for each of the trays to bring copy sets alternately to a single point binding device.

Abstract: An apparatus in which lateral movement of a moving belt is controlled so that the belt moves in a pre-determined path. The apparatus includes at least one rotatably mounted roller having an elastic membrane entrained thereabout. The coefficient of friction between the elastic membrane and the roller is low so as to form a low friction interface therebetween. A pair of opposed, spaced flanges constrain the belt. As the belt moves in a lateral direction, one of the flanges engages a side edge of the belt to prevent lateral movement thereof. When the side edge of the belt engages the flange, the elastic membrane slips on the roller when the force applied on the side edge of the belt is greater than the maximum frictional force between the roller and the elastic membrane, in the direction of lateral movement of the belt.