Abstract: A sheet registration system, especially for printers, with a lower cost and lower mass-movement system for both sheet deskewing and transverse registration repositioning of the sheets in the same integral system, especially for higher speed printing. Only one main drive motor can drive both of the two spaced apart sheet feeding nips, together with a much lower power, and lower cost, deskewing differential drive system for providing the relative differential angular movement of the two spaced sheet feeding nips to achieve the desired amount of sheet deskewing movement, without interrupting the forward feeding movement of the sheet. Also disclosed are extensive further reductions in the component mass of the lateral translation movement for lateral sheet registration.

Abstract: A sheet registration system, especially for printers, with a lower cost and lower mass system for sheets deskewing, and optionally also compatibly providing transverse registration repositioning of the sheets. Mechanisms are disclosed which need only one main drive motor to drive both of the two spaced apart sheet feeding nips, together with a much lower power, and lower cost, deskewing differential drive system for providing the relative differential angular movement of the two spaced sheet feeding nips to achieve the desired amount of sheet deskewing movement, without interrupting the forward feeding movement of the sheet.

Abstract: The invention relates to a packaging apparatus for wrapping flat articles, such as books, in a cardboard-made flat package blank, including first flaps remaining on the inside and second flaps remaining on the outside. The packaging apparatus comprises a supply station for package blanks, including alignment and centering elements for a bundle of package blanks and feed means for delivering the blanks from the bundle one by one onto a packaging line, an opening mechanism for the inner flaps of package blanks, a supply station for feeding one or more articles, or a consignment, onto each package blank, means for folding and bending the inner flaps around the consignment means for turning the package blank through 90° relative to its advancing direction, and means for folding and bending the outer flaps around the consignment on top of the inner flaps. The packaging apparatus is provided with first measuring elements capable of measuring the package blank for its width lateral to the travel direction.

Abstract: A method for the register-true alignment of sheets (1) before the transfer to a sheet-processing machine with the assistance of a carrier (7,9) that is movable in the machine cycle and is driven as a function of a signal, in order to feed the sheets individually to an aligning stop. To permit exact and reliable alignment even at high machine speeds with an uncomplicated mechanism, the signal is generated when a sheet edge (12) to be fed passes a predetermined location between the carrier (7,9) and aligning stop (5), and in response to the signal, the carrier performs a preset movement, identical from sheet to sheet, by which the carried-along sheet (1) is fed to the aligning stop with a speed greater than zero, but substantially less than the maximum sheet speed during the feeding movement. The method is particularly suitable for side-edge alignment, but is also suitable for leading-edge alignment.

Abstract: A deskewing device for a moving web of material in a corrugated cardboard manufacturing system incorporates a plurality of successive processing units that are equipped with processing tools, which are movable crosswise to the direction of conveyance of the web of material. A skew measuring device is provided to determine the skew of the web of material. It has a first position sensor, at least one second position sensor, which determine the transverse position of the web of material at predetermined longitudinal positions. A control unit is used to calculate from the data of the position sensors the skew of the web of material and the transverse position of the processing tools is corrected accordingly.

Abstract: A pre-registration system increases the latitude of present active registration systems by decreasing the lateral offset of sheets before they reach the active registration system. This is accomplished by pivoting a long transport with a stepper motor in conjunction with sensing a lateral edge of the sheets in order to direct the sheets to the proper lateral position to be fed into the active registration system with a minimum of lateral offset.

Abstract: A pre-registration system increases the latitude of present active registration systems by decreasing the lateral offset of sheets before they reach the active registration system. This is accomplished by pivoting and translating a sheet supply elevator with stepper motors in conjunction with sensing a lateral edge of sheets in order to direct the sheets to the proper lateral position to be fed into the active registration system with a minimum of lateral offset.

Abstract: The invention relates to an arrangement in connection with a wire guide roll of a paper machine. The arrangement comprises a wire guide roll which is arranged to guide a wire, if the wire is driven to the side from its normal track of travel. The wire guide roll is turned in the direction of travel of the wire by means of at least one actuator. The lateral position of the wire is observed by means of a guide flap monitoring the movement of the wire edge, from which guide flap the guidance information is transmitted to a control unit Which, for its part, controls said actuator. Furthermore, at least one sensor is arranged in connection with the guide flap to determine the position of the guide flap and to control the lateral exceedings of the wire.

Abstract: A method of aligning flat copies in a sheet-processing machine includes the steps of determining the actual position of a sheetlike material in relation to a coordinate system; implementing a nominal position of a cylinder that accommodates the sheetlike material to be aligned on the jacket surface of the cylinder by correctively controlling non-contacting radial/axial magnetic bearings so as to compensate for position changes of the cylinder or components thereof from the nominal position; and maintaining the cylinder in the nominal position thereof until the aligned sheet material is transferred to transport units arranged farther downline; a device for performing the method; a printing unit having the device; and a multicolor rotary printing machine having the device.

Abstract: In general, the present invention provides an efficient and effective means for positioning multiple documents over a scanning surface of a scanner or copier without a user's intervention. More specifically, the present invention provides an apparatus and process for allowing a plurality of photographic prints to be moved from a tray to a scanning surface and back to the tray without being damaged. Each document is scanned through a transparent belt that protects the document as it moves through the inventive photofeeder and across an associated surface of a scanner or copier.

Abstract: A pre-registration system increases the latitude of present active registration systems by decreasing the lateral offset of sheets before they reach the active registration system. This is accomplished by pivoting a long transport with a stepper motor in conjunction with sensing a lateral edge of the sheets in order to direct the sheets to the proper lateral position to be fed into the active registration system with a minimum of lateral offset.

Abstract: The invention relates to a process for alignment of sheet material (1) which is processed in a machine which processes sheet material (1). To do this the sheet material (1) is aligned into one conveyor plane (9) laterally and with respect to its twisting (6) with reference to its conveyor direction (22). The position of the sheet material (1) in the conveyor plane (9) is always acquired at a point (35) on one side edge (24) of the sheet material with a position which is defined to the reference edge (23) of the sheet material (1).

Abstract: A posture correction device includes a detector configured to detect the state of posture of conveyed paper-like material and correction mechanisms configured to correct the posture of paper-like material according to the detected state of posture of paper-like material. The posture correction mechanisms include a correction roller pair configured to clamp and convey the paper-like material, a support frame configured to support the correction roller pair, a first driving mechanism provided separately from the support frame configured to rotate and drive the correction roller pair, and a second driving mechanism configured to tilt the correction roller pair by a prescribed angle in the paper-like material conveying direction by rotating the support frame.

Abstract: An apparatus and method designed to eliminate dog-earring of the comers of the open edges of a folded signature or book without the need for the use of electrostatic adherence. A guide mechanism is provided between a tape drive, a divert cylinder and/or a deceleration drum. The guide mechanism is preferably located at the position of the open edges of the signature which is being transferred. The guide mechanism is preferably of a width which accommodates variations in the folded width of the folded signature or books. The guide mechanism includes a series of narrow slots, or micro-slots, across its width. The gripping devices which are located in the area of the guide mechanism include a series of narrow fingers, or micro-fingers, across their width. The micro-fingers of the gripping mechanisms are designed to pass through the micro-slots of the guide mechanism.

Abstract: The invention relates to a method for the alignment of sheet-like material (1). Its alignment occurs via rotation elements (25), wherein the sheet-like material (1) is rotated around its central axis in order to print on the front and backsides. During the rotation of the sheet-like material (1) around its central axis, the material's leading edge (23) remains in its aligned position. Into the conveyor surface (9) is incorporated a sensor pair (30), preferably in the form of CCD line sensors, with which the sheet-like material (1) is aligned on the same lateral edge (24) following the rotation, as is the case during the alignment procedure of the sheet-like material (1) before it is rotated around its center axis.

Abstract: An automated banking machine (10) identifies and stores documents such as currency bills deposited by a user. The machine then selectively recovers documents from storage and dispenses them to other users. The machine includes a central transport (70) wherein documents deposited in a stack are unstacked, oriented and identified. Such documents are then routed to storage areas in recycling canisters (92, 94, 96, 98). When a user subsequently requests a dispense, documents stored in the storage areas are selectively picked therefrom and delivered to the user through an input/output area (50) of the machine. The control system (30) for the machine includes a terminal processor (548). Identification devices identify the type and character of a document, and distinguish genuine documents, such as genuine currency bills, from unidentifiable or suspect documents.

Abstract: A sheet feeder assembly includes a self-actuating prefeed roll located upstream of a deskewing device, which can include a document sensor switch and a deskew nip roll. After a sheet has been detected at the input of the assembly, a limited slip clutch causes the prefeed nip to close. The prefeed device selectively engages the sheet based on detection of the sheet at the input and then disengages upon detection of the sheet at the deskewing device. Thus, there are no obstructions at the input that the sheet must pass before engagement by the prefeed assembly. By this, chances of misfeeding a sheet that has not been sufficiently pushed into the document feeder are greatly reduced. Moreover, the assembly has increased latitude in the positioning of the input sheet and is particularly desirable for light weight documents since no obstructions exist within the paper path.

Abstract: Random components for each characteristic amount of a paper type to be examined are extracted on the basis of characteristic amounts of the paper type which are read from a plurality of portions on the paper type and reference data previously found with respect to the plurality of portions. Dirt components for each of the plurality of portions on the paper type to be examined are presumed on the basis of the extracted random components for each characteristic amount and a predetermined forecast model of the dirt components. The truth of the paper type to be examined is judged on the basis of the presumed dirt components and the extracted random components.

Abstract: An automated banking machine (10) identifies and stores documents such as currency bills deposited by a user. The machine then selectively recovers such documents from storage and dispenses them to other users. The machine includes a central transport (70) wherein documents deposited in a stack are unstacked, oriented and identified. Such documents are then routed to storage areas in recycling canisters (92, 94, 96, 98). When a user subsequently requests a dispense, documents stored in the storage areas are selectively picked therefrom and delivered to the user through an input/output area (50) of the machine.

Abstract: A method of controlling sheet feed to a sheet-processing machine, wherein sheets are separated from a pile, conveyed onto a table, brought individually into contact with alignment lays for leading edges of the sheets, and conveyed onward therefrom individually for processing in the machine, includes, upon misalignment of a sheet, generating a signal by ultrasonic detectors active in transmission operation, the ultrasonic detectors being fixedly disposed parallel to the alignment lays and including two ultrasonic transmitters arranged at a defined distance, and ultrasonic receivers associated therewith, maintaining over the area of a measuring window sonic energy flux originating from the ultrasonic transmitters, respectively, at a substantially constant sonic intensity in the conveying direction of the sheets, integrally detecting by the respective ultrasonic receiver the sonic energy passing through the measuring window, and simultaneously measuring a difference in the sonic energy measured by the ultrasonic

Abstract: A friction drive apparatus includes an edge detection system for determining a lateral position of a strip material advancing in a longitudinal direction. The edge detection system includes a first sensor and a second sensor for monitoring the lateral position of the strip material. The friction drive apparatus also includes instructions for automatically aligning the strip material as the strip material is advanced a predetermined aligning distance and instructions for calibrating the second sensor with respect to the first sensor to compensate for any potential discrepancies therebetween. The apparatus and methods of the present invention ensure that the strip material is properly aligned in the friction drive apparatus and limit waste of strip material during those operations.

Abstract: A sheet registration device includes: sheet transporting means for transporting a sheet in a transport direction thereof; a sheet positioning member which is disposed in a side of a sheet transport path and in parallel with the transport direction; lateral moving means for moving a sheet transported a long the sheet transport path, toward the sheet positioning member; detecting means for detecting a side edge of the sheet transported along the sheet transport path; moving means for moving the sheet transporting means in a direction perpendicular to the transport direction, the sheet transporting means being disposed downstream from the lateral moving means; and controlling means for, on the basis of a detection result of the detecting means, controlling a movement operation of the sheet transporting means by the moving means.

Abstract: A method and device for aligning stacked or piled sheets in a feeder of a sheet-processing machine, wherein a sheet to be separated is pivotable about a vertical axis extending at least approximately orthogonally to a transport direction of the sheet, as viewed in the transport direction thereof, in order to correct a skewed position of a leading edge thereof relative to at least one front lay. The method further includes determining, relative to the front lay, a skewed position of sheets oncoming at the front lay or resting at the top of the sheet pile, and displacing, transversely or approximately transversely to the transport direction, either the sheet pile, before the sheet is lifted therefrom, or the sheet lifted off the sheet pile, depending upon the determined skewed position, over a displacement distance that is of such length that, after the skewed-position correction, there is a defined spaced distance between a side edge of the sheet and at least one side lay.

Abstract: An electronically actuated turning device for transport apparatus, which apparatus use endless belts for transport, which detects the presence of products being transported such as paper folders, activates a solenoid to cause an upper swivel ball to contact the product and engage a lower swivel ball, which grips and stops the product, and allows the product to rotate 90 degrees, and then releases the product, which product is then transported in the original direction by the apparatus for further operations as required.

Abstract: Random components for each characteristic amount of a paper type to be examined are extracted on the basis of characteristic amounts of the paper type which are read from a plurality of portions on the paper type and reference data previously found with respect to the plurality of portions. Dirt components for each of the plurality of portions on the paper type to be examined are presumed on the basis of the extracted random components for each characteristic amount and a predetermined forecast model of the dirt components. The truth of the paper type to be examined is judged on the basis of the presumed dirt components and the extracted random components.

Abstract: A document alignment system comprises a feed system (6), defining an elongate path, for feeding documents along the path. The feed system is adjustable to vary the orientation of the elongate path in a lateral plain so as to cause a document to undergo a corresponding lateral shift as it is moved along the path. A detector (25,26) detects the lateral position of a document upstream of the elongate path. A control system (70,17,17′) is responsive to the detector (25,26) to adjust the feed system (6) so that the document undergoes a desired amount of lateral movement as it is moved along the elongate path.

Abstract: An apparatus and method are provided for converting a roll of material into various products such as curtains, draperies, valances, or the like. Specifically, the apparatus includes a roll let off for supporting and feeding a roll of material or cloth. After the let off, the edges of the cloth are cut if desired and are engaged by a pair of edge folding and positioning stations for forming vertically folded edges. The folded edges are then converted into hems and sewn into the material by a pair of corresponding hem sewing heads and cloth advancers. Once vertical hems are formed in the cloth, the cloth is cut to predetermined lengths and if desired, folded in a predetermined pattern. The folded pattern can then be transported to a sewing station for further sewing the material into a desired product.

Abstract: An apparatus and method designed to eliminate dog-earring of the comers of the open edges of a folded signature or book without the need for the use of electrostatic adherence. A guide mechanism is provided between a tape drive, a divert cylinder and/or a deceleration drum. The guide mechanism is preferably located at the position of the open edges of the signature which is being transferred. The guide mechanism is preferably of a width which accommodates variations in the folded width of the folded signature or books. The guide mechanism includes a series of narrow slots, or micro-slots, across its width. The gripping devices which are located in the area of the guide mechanism include a series of narrow fingers, or micro-fingers, across their width. The micro-fingers of the gripping mechanisms are designed to pass through the micro-slots of the guide mechanism.

Abstract: A feed device for feeding a document folding and/or inserting machine with envelopes delivered by a general-purpose printer, said feed device comprising detection means for detecting the position of the envelope at the outlet of the printer and reorientation means for reorienting the envelope as a function of its position as determined by said detection means so as to enable documents to be inserted into the envelope. The detection means advantageously comprise a detector for detecting an edge of the envelope, and the reorientation means advantageously comprise a turntable.

Abstract: A sheet-guiding suction box can be adapted to the size or format of a plurality of sizes of sheets to be guided. This is accomplished by structuring the guide box with a plurality of independently acting suction chambers. A central suction area of the guide surface of the suction box is smaller in size than the smallest format of a sheet to be guided.

Abstract: A sheet handling system for a sheet transport path of a reproduction apparatus having a sheet skew correction system being fed image substrate sheets in the process direction by a sheet transport system, wherein it is desired to positively feed and yet effectively deskew a wide range of different lengths of sheets in the process direction. A plurality of identical but independent sheet transport units may be provided spaced along the sheet transport path in the process direction engageable with a sheet being fed through sheet transport path for positively feeding even very short sheets from one sheet transport unit to another and to the skew correction system. Yet these sheet transport units provide independently automatically disengageable nips for automatically releasing even a very long sheet from any unit when that long sheet is in the skew correction system. A different selected number of the sheet transport units are disengaged in response to a different sheet length control signal.

Abstract: In a lateral sheet shifting system, wherein sheets are fed from a sheet input to a sheet output with controlled shifting transversely of the process direction, there is a pivotal arcuate sheet path defining baffle unit providing an arcuate sheet-feeding path between the input and output. This arcuate baffle unit is mounted for pivotal angular movement laterally of the process direction by a controllable automatic variable angle pivoting system to form a variable sheet spiraling path therein. The arcuate baffle unit may be generally "S" or "U" shaped, and may be defined by, or consist solely of, opposing relatively closely spaced similarly arcuate baffles, such as at least two operatively connecting but oppositely facing generally quarter-cylindrical sections which can provide sheet side shifting without introducing any sheet skewing. The sheets in the baffle unit need not be engaged by any sheet feeding rollers therein, and the sheet input and output can be simple conventional fixed rollers on fixed axes.

Abstract: Random components for each characteristic amount of a paper type to be examined are extracted on the basis of characteristic amounts of the paper type which are read from a plurality of portions on the paper type and reference data previously found with respect to the plurality of portions. Dirt components for each of the plurality of portions on the paper type to be examined are presumed on the basis of the extracted random components for each characteristic amount and a predetermined forecast model of the dirt components. The truth of the paper type to be examined is judged on the basis of the presumed dirt components and the extracted random components.

Abstract: A sheet supply apparatus adapted for use with a recording apparatus such as a printer. The sheet supply apparatus comprises a frame having a sheet conveying surface, a shaft rotatably arranged above the sheet conveying surface, and a plurality of protrusions arranged on the shaft in the axially spaced relationship and at circumferentially different angles. The sheet is conveyed toward a horizontal member (such as conveying rollers in a printer) extending in the direction perpendicular to the sheet conveying direction along the sheet conveying surface by the protrusions so as to cause the sheet to abut against the transverse member. Oblique feeding of a sheet is thus corrected.

Abstract: A banknote centering device uses a drive arrangement to accelerate two opposed side plates and the inertia of the side plates causes the banknote to be centered. The resistance of the banknote to buckling stops the side plates. A separate drive for the side plates accelerates the side plates and stalls when a banknote is centered. Preferably, the current for the drive of the side plates is variable to adjust for changing conditions.

Abstract: An arrangement of sewing successive edges of material which extend in two directions. The arrangement comprises a stationary sewing table having a prescribed sewing area. The sewing table supports a carriage. A sewing machine is supported by the carriage. Drives are provided for the carriage and the sewing machine and are operative to move the carriage selectively in the X and Y directions while operating the sewing machine to sew. A material feeding assembly having an independent drive is provided to feed material into the sewing area and to maintain the fed material in the sewing area in a flat fixed position for a prescribed period of time. A control operates to actuate the feeding assembly to position the material, to actuate the sewing machine to sew and to actuate the carriage carrying the sewing machine to move in the X and Y directions about the sewing area forming automatically a folded fabric having all edges stitched.

Abstract: A bill accepting apparatus has a pair of photo-electronic sensors disposed spaced apart from each other on an imaginary line orthogonal to a bill transport direction. The leading edge of the bill being transported is detected at times T1 and T2 by the respective sensors. A time difference between T1 and T2 is compared with a predetermined value. From a known distance between the two sensors, a known bill transport speed and the time difference, the tilt angle of the leading edge can be determined. Analog outputs hyof the sensors are individually converted at a given frequency to first and second series of digital values. A CPU interrupt signal is obtained each time when both of each of the first and second series of digital values are obtained, and this interrupt signal initiates a skewed bill detecting task in a CPU.

Abstract: An apparatus and method for registering and deskewing a sheet along a sheet path. A pair of drive spheres are located in the sheet path. When a sheet enters the nips formed by the spheres the sheet is driven until it is sensed by a sensor. The drive spheres are driven by a pair of wheels which allow the spheres to rotate about any axis through their center and parallel to the plane of the sheet. The spheres are driven such that the sheet is side registered and deskewed as it is moved along the sheet path. Constant feedback from the sensors to the drive controller allows the sheet to be registered in a very short distance and has the added benefit of self compensation for wear of the drive components. The wide registration and deskewing latitude of the device allows for the use of relatively inexpensive and low accuracy sheet drives preceding the device.

Abstract: Conveyor rollers 1a, 1b which are driven by a rotary drive motor 9 are disposed in different locations in a direction in which a sheet is conveyed. The conveyor rollers 1a, 1b are arranged so as to be able to move in a direction intersecting the direction of conveyance by means of sheet shift means which are driven by shift motors 11a, 11b. Sheet sensors 13a, 13b are provided in the reference position for the side edge of the sheet. If the sheet sensor 13a (or 13b) does not detect the side edge of the sheet 2, the shift motors 11a, 11b are controlled in such a way that a conveyor roller 1a (or 1b) corresponding to the sheet sensor approaches the sheet side edge reference position. In contrast, if the sheet sensor detects the side edge of the sheet 2, the shift motors are controlled in such a way that the conveyor roller departs from the reference position.

Abstract: A positioning conveyor is incorporated in a conveyor system for adjusting the position of a sheet on the conveyor system. The positioning conveyor has two belt type conveyor sections that are independently movable transverse to the feed path and are utilized to adjust the position of the sheet. The sheet is scanned by a scanner and the data is input to a computer. A vacuum zone on each section provides spaced apart gripping points to establish a pivot axis to correct for skew. The computer controls the coordinated movement of the sections to pivot and side shift the sheet to a desired position.

Abstract: Equipment for advancing sheets having at least one rectangular format from a plotter or photocopier to a folding machine comprises two conveyor belts and means for temporarily reversing the direction of movement of one of the two belts in order to rotate the sheet through 90.degree., this reversal being achieved by reversing the sense of rotation of the motor which drives the belts.

Abstract: A device and method of guidance equipping a sewing machine provided with a work carrier plate, and a presser foot (5) for driving the material to be sewn, associated with at least one needle comprising at least one member (10) for adjusting the transverse position of the material, applied in contact with the material at a point of contact (12): offset laterally from a driving straight line (18); situated in operation at least substantially in line with the presser foot (5) and oriented with a fixed non-zero angle with respect to the driving straight line. A machine equipped with this device is also disclosed.

Abstract: In one embodiment of the present invention, a modular printing system has a plurality of modules for processing sheets. One module is a collator module configured to retain the sheets. The collator module has a collator controller and sensors linked to the collator controller. The sensors are arranged to detect erroneously processed sheets. The collator controller is configured to generate an error signal in response to detection of an error. The collator module also includes a feed assembly for presenting the sheets. A printer module is configured to receive sheets presented by the feed assembly. The printer module includes a printer controller and sensors linked to the printer controller. The sensors are arranged to detect erroneously processed sheets and to generate an error signal in response to detection of an error. The module printing system also includes a system controller linked to the collator controller and the printer controller.

Abstract: A method and apparatus for deskewing a sheet of media traveling through a paper path in a printer is provided. A buckle is formed in the sheet of media by over-driving the sheet into stationary deskew rollers that form a deskew nip downstream. A deskewing bias element includes a plurality of articulated segmented surfaces that contact the buckle and urge the leading edge of the sheet into the deskew nip. The buckle force combined with the biasing force from the deskewing bias element aligns the leading edge of the sheet with the deskew nip across the full width of the sheet, thereby removing any skew.

Abstract: A deskewing and registering device for an electrophotographic printing machine. A single sensor determines the position and skew of a sheet in a paper path and generate signals indicative thereof. A pair of independently driven nips forward the sheet to a registration position in skew and at the proper time based on signals from a controller which interprets the position signals and generates the motor control signals. An additional single sensor can be used at the registration position to provide feedback for updating the control signals as rolls wear or different substrates having different coefficients of friction are used.

Abstract: An image forming apparatus records an image on a recording medium after correcting a slant of the image according to a type of document sheet or an operating history of the image forming apparatus. Normally, a slant of the document sheet is corrected by bringing one edge of the sheet in contact with a document scale provided on a document platform. When the sheet is of thin paper or sheets of different sizes are mixed, an image signal obtained by scanning a document image is electrically processed so as to correct a slant of an image to be recorded. When the image signal is electrically processed so as to correct the slant of the image to be recorded, the correction of image slant may be based also on the operating history of the image forming apparatus, for example, the total number of sheets transported, the number of times a paper jam has occurred or the cumulative value of the slant angle of the image.

Abstract: A detector assembly for detecting registration marks on a printed sheet when different color printing on different colored sheets is present has a pair of light sources and a light sensor. The light sources are of different colors selected to be complimentary such that one light source or the other will be capable of detecting a substantial range of contrasting registration marks placed on sheets that can be of various colors. Controls are used for selecting the light source that provides an output sensed by a light sensor when passing over the registration marks.

Abstract: A copying machine having a two-in-one copying mode comprises a document feeder means 65, 75 and three conveying means 90, 95, 101. The feeder means 65, 75 feeds a document toward a glass platen 29 one by one to stop the document at a first-out position. The first conveying means 90 conveys the document fed by the feeder means 65, 75 onto the glass platen. The second conveying means 95 conveys the document conveyed by the first conveying means 90 along the glass platen 29 until the rear end of the document reaches at a predetermined switch-back position, then conveys the document to the opposite direction to retreat a predetermined distance, and then conveys the document as well as a succeeding document stopped at the first-out position such that the front end of the document situated on a downstream side of the document conveying direction may be aligned with a exposure reference SP, and then discharging the documents to the downstream side of the document conveying direction after exposure.

Abstract: In a sheet feeding device, the local feed of the sheet is measured in the vicinity of respective drive rollers by means of respective sensors for the purpose of aligning rectangular sheets of a preselected set. On the basis of signals from the light sensors, a control device determines an optimum pair of rollers for aligning the sheet. The control device compares the signals of the two associated sensors and adjusts the local feed of the sheet in such a way that the two sensors establish the same local feed, before the sheet leaves one of the selected rollers.

Abstract: A sheet feeding device for feeding a plurality of cut-type sheets, having been stacked in an accommodating member, one by one toward a predetermined position in response to a predetermined signal to be applied to the sheet feeding device. The sheet feeding device comprises: a first feeding member for feeding the stacked sheets to another predetermined position in response to the predetermined signal, a second feeding member for feeding the sheet, having been fed by the first feeding member, to the predetermined position after a feeding operation executed by the first feeding member and a controlling member for controlling the first feeding member so as not to be operated during a feeding operation executed by the second feeding member. Thus, according to the present invention, it becomes possible to avoid sheet jamming caused by sheets having been fed together in an overlapped state.