Class / Patent application number | Description | Number of patent applications / Date published |
271171000 | Holder adjustable to size of sheet | 40 |
20090008869 | PAPER FEEDING UNIT AND IMAGE FORMING APPARATUS HAVING THE SAME - A paper feeding unit and an image forming apparatus having the same capable of maintaining a constant paper feeding force regardless of a size of paper. The image forming apparatus includes a main body, a printing unit provided in the main body to form an image on paper, a paper feeding unit to supply the paper into the main body, and a force adjusting unit. The paper feeding unit includes a paper feeding cassette to load paper therein, a knock-up plate to guide the paper loaded in the paper feeding cassette to a pickup device, an elastic member to elastically bias the knock-up plate toward the pickup device, and guide sides provided at both sides of the knock-up plate. The guide sides are adjusted along a distance therebetween according to a width of the paper. The force adjusting unit adjusts an elastic force of the elastic member when the distance between the guide sides is adjusted according to a size of the paper. Accordingly, since the elastic force of the elastic member supporting the knock-up plate is adjusted through the force adjusting unit which interlocks with the guide sides moving corresponding to the change of the size of the paper loaded on the knock-up plate of the paper feeding cassette, the paper feeding force can be maintained constant all of the time. | 01-08-2009 |
20090051101 | Image forming apparatus, sheet size detection device, and sheet size detection method - An image forming apparatus includes a sheet size detection device including a sheet width direction regulating member, a sheet conveyance direction regulating member, two levers, a detection sensor, and a pattern supplementing device. The levers each have a concavo-convex pattern and interlock with the regulating members, respectively, and are superimposed to have the same center of rotation and the same locus formed by a leading end of the concavo-convex pattern. The concavo-convex pattern of at least one of the levers is shaped to prevent, in a detection pattern, erroneous detection attributed to positional displacement of the concavo-convex pattern. The detection sensor including push switches detects the sheet size according to a combined concavo-convex pattern formed by the superimposed levers. The pattern supplementing device supplements the concavo-convex pattern of the at least one lever to prevent, in another detection pattern, erroneous detection attributed to the shaping of the concavo-convex pattern. | 02-26-2009 |
20090066011 | PAPER FEEDING APPARATUS - A paper feeding apparatus includes a cassette main body that stacks a paper therein, a sidewall that moves in a width direction of the cassette main body, an end wall that moves in a longitudinal direction of the cassette main body, a first movable member that is connected at one end to the sidewall and rotates around a shaft axially fixed to the cassette main body in connection with the sidewall, a second movable member that is connected at one end to the end wall and rotates around a shaft axially fixed to the cassette main body in connection with the end wall, a first detection unit that has a plurality of detection members and detects the size of the paper in the width direction, and a second detection unit that has a plurality of detection members and detects the size of the paper in the longitudinal direction. | 03-12-2009 |
20090072471 | Media Restraint Device For An Input Tray - The present application is directed to methods and devices for restraining media in an input tray of an image forming device. In one embodiment, a media restraint device includes a movable partition including a primary section and a secondary section. At least one locking mechanism selectively locks the primary section to the input tray, and the secondary section to the primary section. The locking mechanism unlocks either the primary section or the secondary section when the other is at a predetermined position. | 03-19-2009 |
20090115123 | SHEET TRANSPORT APPARATUS AND IMAGE FORMING APPARATUS - The sheet transport apparatus comprise a sheet supply tray, a separation roll, a support body and a separation roll accommodation portion. The sheet supply tray has a plurality of sheets. The separation roll separates out the sheets one by one by applying a transport resistance to the sheets transported from the sheet supply tray. The support body rotatably supports the separation roll. The separation roll accommodation portion is formed in a transport path along which the sheets are transported, and it accommodates the separation roll and the support body such that they may be detached from a transport surface side of the transport path. | 05-07-2009 |
20090206545 | Medium feeding cassette and image forming apparatus - A medium feeding cassette includes a cassette main body, a cassette extension member mounted to the cassette main body so as to be movable with respect to the cassette main body, and a locking mechanism configured to lock the cassette extension member at a predetermined position with respect to the cassette main body according to a size of the medium. The locking mechanism includes a locking member and a first locking groove that engage each other so as to lock the cassette extension member in the predetermined position. The locking member moves in a direction to release locking of the cassette extension member when a force is applied to the cassette extension member in a direction to retract the cassette extension member into the cassette main body. | 08-20-2009 |
20090236796 | EDGE REGULATING DEVICE, PRINTING MEDIUM CASSETTE, AND PRINTING APPARATUS - An edge regulating device that regulates edge of a printing medium by an edge guide includes a first holding unit that is able to hold the edge guide with a predetermined pitch along the direction of displacement of the edge guide and a second holding unit that is able to hold the edge guide with a pitch larger than the holding pitch by the first holding unit along the direction of displacement of the edge guide. | 09-24-2009 |
20090295072 | Media Tray With Media Restraint Assembly Adjustable Between And Lockable At Multiple Closely Spaced Positions - A media tray includes a housing and a media restraint assembly mounted in the housing having a position selection mechanism for placing respective floor portions of the housing in a selected one position of a multiplicity of closely spaced apart positions. The position selection mechanism includes an actuator adapted for undergoing movement relative to the floor portions along a first direction between extended and retracted positions and a position securement arrangement adapted for undergoing conversion along a second direction transverse to the first direction between engaged and disengaged conditions in response to movement of the actuator between the extended and retracted positions to correspondingly select and de-select the selected one position of the floor portions and accordingly set the floor portions at and release the floor portions from the selected one position thereof. The media restraint assembly also includes an actuation lever and a lock mechanism for the lever. | 12-03-2009 |
20090295073 | IMAGE FORMING APPARATUS - A trailing end of a sheet stored in a cassette body is regulated by a first trailing end regulating member | 12-03-2009 |
20100052246 | MEDIA SIZE SENSING SYSTEM AND METHOD - A media size sensing system includes independently moveable length and width edge guides, in a media tray, for positioning against orthogonal edges of media sheets. A linearly sliding sensor device is provided, and a single linkage connects the length and width edge guides to the sensor device, the single linkage providing a unique position indication that is a function of both length and width for a range of media sheet sizes. | 03-04-2010 |
20100117291 | SHEET SIZE DETECTION DEVICE - A sheet size detection device for detecting a size of sheets which are held in a sheet tray is disclosed. The device comprises first and second guide members, first and second brackets, and a plurality of switches. The first guide member is movable in accordance with a first dimension of the sheets. The second guide member is movable in accordance with a second dimension of the sheets. Each bracket is operatively connected to its respective guide member and includes a plurality of slots extending through a solid surface. The plurality of switches is configured for selective engagement by at least one of the brackets. The solid surface and the plurality of slots of each bracket are configured to interact with one another to selectively engage the plurality of switches. The selective engagement of the plurality of switches enables conveyance of two dimensions of the sheet size. | 05-13-2010 |
20100148427 | RECORDING MATERIAL FEEDING DEVICE, RECORDING APPARATUS AND LIQUID EJECTING APPARATUS - A recording material mounting face portion is provided on which recording materials are stacked for being fed. A body slide portion is attached to the recording material mounting face portion to be slidable in a widthwise or a feeding direction of the recording material. A movable edge guide includes a body operating portion having a guide face that contacts a side of the recording material while being fed and a fixing means that fixes a position of the movable edge guide in a slide direction of the movable edge guide. The fixing means includes notch columns on a surface of the recording material mounting face portion along the slide direction of the movable edge guide and engaging protrusions on the movable edge guide and that engage notches of the notch columns to realize the fixed state. | 06-17-2010 |
20100187750 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - A sheet feeding apparatus and an image forming apparatus, including a size detecting portion, which has: a size detecting lever, which is disposed opposite to a side regulation member, and pivots in association with a movement of the side regulation member to a regulation position according to a size of a sheet; and a switch turned ON and OFF according to a pivotal position of the size detecting lever. The side regulation member is provided with a protrusion, which abuts the size detecting lever to amplify a pivotal amount of the size detecting lever pivoting in association with the movement of the side regulation member to the regulation position. | 07-29-2010 |
20100270735 | GUIDE ASSEMBLY - A guide assembly may include a first latch, a second latch, a fastening device and a compression device. The first latch may be coupled to the second latch by the fastening device such that the first latch and the second latch are moveable about the fastening device. The first latch may include a plurality of first teeth on at least a portion of the first latch. The first teeth may be configured to engage a first track. The second latch may include a plurality of second teeth on at least a portion of the second latch. The second teeth may be configured to engage a second track. | 10-28-2010 |
20110095473 | PAPER FEEDING APPARATUS WITH PAPER SIZE DETECTORS - A paper feeding apparatus includes a cassette main body that stacks a paper therein, a sidewall that moves in a width direction of the cassette main body, an end wall that moves in a longitudinal direction of the cassette main body, a first movable member that is connected at one end to the sidewall and rotates around a shaft axially fixed to the cassette main body in connection with the sidewall, a second movable member that is connected at one end to the end wall and rotates around a shaft axially fixed to the cassette main body in connection with the end wall, a first detection unit that has a plurality of detection members and detects the size of the paper in the width direction, and a second detection unit that has a plurality of detection members and detects the size of the paper in the longitudinal direction. | 04-28-2011 |
20110127714 | SHEET SIZE DETECTING MECHANISM FOR USE IN AUTOMATIC DOCUMENT FEEDER - A sheet size detecting mechanism includes an adjustable module, a sensing module and a controlling unit. The adjustable module includes a first sheet guide, a second sheet guide, an adjustable part and a circular gear. The adjustable part is a moved to a position where the first sheet guide and the second sheet guide are respectively in contact with two parallel edge sides of a sheet. The circular gear is rotated as the adjustable part is moved. The sensing module includes a sustaining element and a circuit board. The sustaining element is connected to an underside of the circular gear, and synchronously rotated with the circular gear. When the circular gear is rotated by an angle, the sustaining element is in contact with a specified one of the plural sensing regions, so that the circuit board generates a sensing signal. According to the sensing signal, the sheet size is acquired. | 06-02-2011 |
20110221123 | FEEDING DEVICE AND RECORDING DEVICE - There is provided a feeding guide unit that slides according to a width size of the feeding material in a receiving unit that receives a plurality of feeding materials, and a separation unit having an inclined surface structure that abuts on a tip of the fed feed material so that a separating load is exerted, and separates the following feed material to feed only the feed material at the uppermost position. The separating load of the separation unit is changed to at least two stages in conjunction with a movement in a width direction of the feeding guide unit. | 09-15-2011 |
20120187622 | SHEET POSITIONING DEVICE, SHEET STACKER, IMAGE FORMING APPARATUS, AND IMAGE SCANNER - A sheet positioning device includes a platen on which to place a sheet of recording media, a first and second regulation members disposed on the platen and movable along the platen, a drive source, a drive transmitter to transmit a drive force generated by the drive source to the first and second regulation members, and a sheet sensor unit. The sheet sensor unit includes a plurality of sheet detection levers, a biasing member, and a connecting member that connects the plurality of sheet detection levers so that the entire sheet sensor unit moves as a single unit between first and second positions reciprocally to detect the sheet on the platen according to the position of the sheet detection levers moving from the first position being biased by the biasing member to the second position in contact with the sheet placed on the platen. | 07-26-2012 |
20130001866 | DOCUMENT POSITION-LIMITING MECHANISM - A document position-limiting mechanism includes a first paper guide plate, a second paper guide plate, a connecting wheel and a switching module. The first paper guide plate and the second paper guide plate are used for guiding a document on a paper input tray to be fed into an automatic document feeder. Through the connecting wheel, the first paper guide plate and the second paper guide plate are movable on the paper input tray. Via the switching module, the document position-limiting mechanism can be operated in two operating modes to be selected by the user in order to meet the requirements of different users. | 01-03-2013 |
20130001867 | Sheet Conveyer Device - A sheet conveyer device including a sheet container tray and a guide member to restrict a position of edges of the sheets is provided. The sheet container tray includes a first engagement section. The guide member includes an arm part and a first engageable part being engageable with the first engagement section. One of the first engagement section and the first engageable part is formed to have a concave structure, and the other one of the first engagement section and the first engageable part is formed to have a convex structure. A first plane in the concave structure, which becomes slidably in contact with the convex structure when the guide member is moved in a pointing direction, is formed to incline in a more moderate angle than an angle of a second plane in the concave structure, which becomes separated from the convex structure. | 01-03-2013 |
20130043644 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - A movable side regulating plate is provided on a frame body. The movable side regulating plate regulates side edges in a width direction of sheets stacked on a sheet stacking plate, and is movable in the width direction. A sheet pressing portion configured to press the side edges of the sheets and press the sheets onto a stationary side regulating plate is provided on the movable side regulating plate. The sheet pressing portion has a relief shape for reducing a pressing force exerted on the sheets when an amount of the sheets stacked on the sheet stacking plate becomes equal to or smaller than a predetermined amount. The relief shape is formed so that a downstream edge in a sheet feeding direction of a lower surface is located higher than an upstream edge in the sheet feeding direction of an upper surface. | 02-21-2013 |
20130056925 | DOCUMENT POSITION-LIMITING MECHANISM - A document position-limiting mechanism includes a first paper guide plate, a second paper guide plate, a connecting wheel and a switching module. The first paper guide plate and the second paper guide plate are used for guiding a document on a paper input tray to be fed into an automatic document feeder. Through the connecting wheel, the first paper guide plate and the second paper guide plate are movable on the paper input tray. By means of the switching module, two operating modes of the document position-limiting mechanism can selected by the user in order to meet the requirements of different users. | 03-07-2013 |
20130134658 | MEDIUM SUPPLY DEVICE AND IMAGE FORMING APPARATUS - A medium supply device includes a medium cassette that accommodates a medium, a dial that is rotatable around a predetermined rotation shaft, an angle-holding part to hold the dial, a subsidiary arm including arm parts that are independently displaceable, and a detection switch with switch parts that are pressed by arm parts of the subsidiary arm. The dial includes a display part on which display elements illustrating a medium size are arranged in a circumferential direction around the rotation shaft, a rotation lock part configured to be locked by the angle-holding part, and a projection formation part that includes projection parts configured to press the arm parts of the subsidiary arm in a circumferential direction around the rotation shaft. The projection parts selectively contact and displace the arm parts in accordance with the rotation angle of the dial to selectively press the switch parts of the detection switch. | 05-30-2013 |
20130154183 | SHEET GUIDE AND IMAGE RECORDING APPARATUS - A sheet guide includes a base on which a sheet is placed; a pinion which is rotatably provided on the base; a pair of racks which are extended in a sliding direction, which sandwich the pinion therebetween, which are engaged with the pinion to move opposite to each other in the sliding direction; a pair of positioning members which are provided at one end portions of the pair of racks respectively; a sliding guide which is formed in the base and which guides the pair of racks in the sliding direction; and a contact portion which is provided at a side of at least one rack of the racks; a first supporting member configured to press the contact portion to urge the at least one rack against the pinion; and a second supporting member configured to support the other end portion of the at least one rack. | 06-20-2013 |
20130270765 | IMAGE FORMING APPARATUS AND SHEET POSITIONING DEVICE USING METHOD OF SHEET POSITIONING - An image forming apparatus to which a sheet positioning device can be provided to perform a sheet positioning includes an image forming device and a sheet positioning device that includes a sheet setting plate, a pair of side fence units disposed facing each other along opposite sides of the sheet setting plate to move in a lateral direction of the sheet, a moving mechanism to move the pair of side fence units, a contact member to contact and press the sheet, a position detector to detect the position of the contact member, and a controller moving the pair of side fence units when the sheet is placed on the sheet setting plate, halting movement of the pair of side fence units after the contact member has contacted and pressed the sheet, and moving the pair of side fence units again based on detection results obtained by the position detector. | 10-17-2013 |
20140001701 | MEDIA SIZE DETECTION DEVICE AND METHOD | 01-02-2014 |
20140103603 | PAPER OUTPUT TRAY, PAPER OUTPUT UNIT INCORPORATING SAME, AND IMAGE FORMING APPARATUS INCORPORATING SAME - A paper output tray, which can be included in a paper output unit in an image forming apparatus, includes a tray body, a paper support extension slidably attached to the tray body and arranged switchable between a stored state in which the paper support extension is stored in the tray body and an extended state in which the paper support extension is pulled out to extend from the tray body, and a stopper rotatably attached to the paper support extension and arranged switchable between a folded state in which the stopper is folded to the paper support extension and a standing state in which the stopper is raised from the paper support extension. With the paper support extension in the stored state and the stopper in the folded state, the stopper overlaps an outer surface of the tray body. | 04-17-2014 |
20140191464 | SHEET SUPPLY DEVICE - A sheet supply device includes a sheet supply tray, a guide fence for restricting sheets along a sheet width direction, a slider block that is slidable along the sheet width direction and supports the guide fence in an upright state, a slide shaft that is inserted into a through hole formed in the slider block and guides sliding of the slider block, and a guide fence lock mechanism including a restriction member on which a hole is formed and that is attached to the slider block swingably (the slide shaft is inserted into the hole). The guide fence lock mechanism restricts sliding of the slider block by holding the restriction member in a lock state where an inner circumferential edge of the hole is pushed onto an outer circumference of the slide shaft, and allows sliding of the slider block when the restriction member is swung to cancel the lock state. | 07-10-2014 |
20140291919 | RECORDING MEDIUM FEEDING UNIT AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A recording medium feeding unit includes a recoding medium loading plate, a main body, positioning members, racks, a pinion, a rotating shaft and an adjustment member. The main body holds the recording medium loading plate. The positioning members position the recording member in a widthwise direction. The racks are respectively provided on the positioning members, extend along the widthwise direction, and move in the widthwise direction integrally with the positioning members. The pinion is rotatably provided on the main body, is engaged with each of the racks, and is rotated in association with the movement of the racks. The rotating shaft rotatably supports the pinion. The adjustment member applies a rotation load to the pinion by allowing the pinion to be in contact therewith. The adjustment member is capable of adjusting the rotation load in a manner to move in the thickness direction of the recording medium loading plate. | 10-02-2014 |
20140367909 | COMPACT SHEET CARRYING DEVICE AND DOCUMENT PROCESSING APPARATUS USING SUCH DEVICE - A compact sheet carrying device comprises a tray, a first supporting arm and a second supporting arm. The tray supports a first portion of a sheet. The first supporting arm is pivotally connected to the tray at one end having a first toothed portion. The second supporting arm is pivotally connected to the tray at one end having a second toothed portion. The two toothed portions mesh with each other. The two supporting arms are concurrently in a deployed state or a retracted state. In the deployed state, the two supporting arms support a second portion of the sheet. A document processing apparatus using such sheet carrying device is also provided. | 12-18-2014 |
20150097331 | MECHANISM TO DETECT LINEAR MOTION USING CAM PATH - In a mechanism for detecting the size of media loaded in a media tray of an imaging device, the media tray includes at least one pair of media guiding members for alignment with the edges of the media. The media size sensing mechanism includes two racks operatively connected to the pair of media guiding members, a pinion positioned between the two racks, a cam structure attached to the pinion, and a sensor depicting the corresponding size of the loaded media. The cam structure defines an arcuate surface engaging a sliding pin of the sensor. The arcuate surface of the cam structure is configured to slide the pin linearly between a first extreme linear position and a second extreme linear position, as the cam rotates between a first extreme angular position and a second extreme angular position. | 04-09-2015 |
20150102552 | PAPER FEEDER AND IMAGE FORMING APPARATUS - A paper feeder includes a recording-media container, a width regulating member, and a locking mechanism. The recording-media container is attachable to and detachable from a body of an image forming apparatus. The recording-media container stores a recording medium. The width regulating member regulates a position in a widthwise direction of the recording medium stored in the recording-media container. The locking mechanism steplessly changes a movable range of the width regulating member in the widthwise direction. The width regulating member includes a lever configured to cooperate with the width regulating member to hold the locking mechanism so as to bring the locking mechanism into an unlocked state. The locking mechanism in a locked state restricts movement of the width regulating member in the widthwise direction, and regulates wobbling of the width regulating member in a direction orthogonal to the widthwise direction. | 04-16-2015 |
20150353301 | STACKING TRAY DEVICE - The present invention discloses a stacking tray device to be used for a business machine. The stacking tray device comprises a tray, a guide plate and a stopper, wherein paper is placed on the tray, the guide plate moves relative to the tray and restricts the size of the paper, and the stopper sets the position where the guide plate stops when the guide plate is pushed from the center towards the outside. When the stopper is in a lock position, the guide plate stops at a first position corresponding to a first standard paper size; when the stopper is in an unlock position, the guide plate stops at a second position corresponding to an oversized paper size. | 12-10-2015 |
20160001995 | PAPER FEED TRAY - A paper feed tray includes: a tray main body which holds a sheet such that the sheet can be fed in a predetermined paper feed direction; and a regulation plate which can be moved in a side direction perpendicular to the paper feed direction and which regulates the position of the held sheet in the side direction. In the tray main body, a first engagement tooth row and a second engagement tooth row whose engagement teeth are aligned in the side direction are provided so as to be opposite each other, and the first engagement tooth row is higher than the second engagement tooth row. In the regulation plate, an engagement member is provided which can be moved in the direction of height of the engagement tooth rows and which engages with the engagement tooth rows to reduce the movement of the regulation plate in the side direction. | 01-07-2016 |
20160083205 | CASSETTE, FEEDER, AND IMAGE FORMING APPARATUS - A cassette ( | 03-24-2016 |
20160137445 | PAPER TRAY SIZE SENSING MECHANISM - A media supply tray includes a Bowden cable attached to side paper guides. Movement of one side guide causes the opposing side guide to move in the opposite direction. When the side guides are moved, a flag attached to the cable moves and can be detected to provide accurate feedback to a printer regarding media size in the tray. | 05-19-2016 |
20160145061 | SHEET CASSETTE, FEEDER, AND IMAGE FORMING APPARATUS - A sheet cassette ( | 05-26-2016 |
20160147188 | SHEET FEEDING CASSETTE AND IMAGE FORMING APPARATUS INCLUDING THIS - A sheet feeding cassette includes a cassette main body and a cassette cover. The cassette main body is attachably/detachably provided in a casing, and configured to store sheets in a loaded state. The cassette cover configured to close at least a part of a top face aperture formed in the cassette main body. Either one of the cassette main body and the cassette cover includes a cursor displaced along an attachment direction of the cassette main body and arranging the sheets housed in the cassette main body. Another one of the cassette main body and the cassette cover includes at least one restraining part which engages with the cursor in a case where the top face aperture is closed by the cassette cover. | 05-26-2016 |
20160185540 | STACKING DEVICE AND IMAGE FORMING APPARATUS - When an operating lever is moved from an operation position to a stand-by position, a standard size fixing member is lowered in advance of a non-standard size fixing member, so that a regulating member for regulating a position of an end portion of a sheet can be set to a desired position, enabling stable sheet feeding. | 06-30-2016 |
20160200531 | SHEET STORAGE APPARATUS AND IMAGE FORMING APPARATUS | 07-14-2016 |