EP0934555A1 - Klappenanordnung für den zugriff zu einem papierweg von einzelblattdruckern und -kopierern - Google Patents
Klappenanordnung für den zugriff zu einem papierweg von einzelblattdruckern und -kopierernInfo
- Publication number
- EP0934555A1 EP0934555A1 EP97946740A EP97946740A EP0934555A1 EP 0934555 A1 EP0934555 A1 EP 0934555A1 EP 97946740 A EP97946740 A EP 97946740A EP 97946740 A EP97946740 A EP 97946740A EP 0934555 A1 EP0934555 A1 EP 0934555A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flap
- arrangement according
- paper path
- pivot axis
- operating position
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/70—Detecting malfunctions relating to paper handling, e.g. jams
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/65—Apparatus which relate to the handling of copy material
- G03G15/6529—Transporting
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/1604—Arrangement or disposition of the entire apparatus
- G03G21/1623—Means to access the interior of the apparatus
- G03G21/1638—Means to access the interior of the apparatus directed to paper handling or jam treatment
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00535—Stable handling of copy medium
- G03G2215/00548—Jam, error detection, e.g. double feeding
- G03G2215/00552—Purge of recording medium at jam
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/1672—Paper handling
- G03G2221/1675—Paper handling jam treatment
Definitions
- the invention relates to a flap arrangement for access to a paper path of single sheet printers and copiers, with a pivotably arranged flap, which forms a section of a guide surface for the paper path in its locked operating position and can be pivoted into an open position by means of an actuating device about a first pivot axis , in which it protrudes from the paper path for engagement and with a second pivotable flap arranged next to the first flap, which like the first flap in its lockable operating position forms a section of the guide surface which adjoins the section formed by the first flap, and around a second pivot axis can be pivoted into an open position, in which it protrudes from the paper path and increases the access area.
- Paper jams sometimes occur in the paper path of single sheet printers and copiers. In any case, the paper path must be at least partially exposed to remove jammed sheets.
- the simplicity is referred to in the following, instead of single sheet printers and copiers, only single sheet printers; Not only paper, but also other printed matter can be processed with single sheet printers, whereby in the following only of paper jam, paper goods etc. is spoken.
- a copying machine is known from US Pat. No. 4,116,556, in which a flap arrangement is provided in the area of the photoconductor drum in order to clear any paper jams.
- the flap arrangement consists of two flaps connected to one another via a joint, each of which is pivotally mounted on the housing of the copying machine via a pivot axis.
- the two flaps are adjustable jointly between an operating position, in which they form a guide surface for the paper path, and an open position, in which the flaps are pivoted away from the paper path and expose a lateral space between the paper path and the flaps, through which jammed sheets are removed can be.
- a comparable flap arrangement with two flaps pivotally mounted on the housing is known from US Pat. No. 4,478,506 or from JP-57 151 954 A.
- the flaps can be pivoted away from the paper path in order to allow access to the paper path.
- the space created for access between the paper path and the flaps is comparatively small due to the small construction volume of such copying machines, so that the jammed sheets can only be removed from the paper path under difficult conditions and with a great deal of time.
- the flaps pivoted together into the open position open an opening through which the sheets jammed in the paper path can be removed in a simple and convenient manner. Furthermore, the opening of the flaps is facilitated by the tensioning element, which supports the opening movement of the second flap. If, on the other hand, the second flap is pivoted into the operating position, it is mechanically clamped by the pretensioning force applied by the clamping element and is held in a defined position in this way.
- each of the two flaps it is possible to equip each of the two flaps with their own locking device and with their own actuating device, which must be actuated separately for each flap. According to a development of the invention, however, it is advantageous that the second flap can be pivoted together with the first flap by the actuating device, so that operation is simple and takes little time.
- a particularly simple and expedient embodiment of the invention now consists in designing the second flap to be removable from the first flap.
- the first pivot axis can be arranged displaceably on a pivotably mounted support, so that the first flap can be pivoted around obstacles in this way.
- the first pivot axis is arranged stationary on the single sheet printer. In order to be able to swing the first flap around an obstacle, it has optionally on the back, that is, the side facing away from the paper path, a projecting web, the free end edge of which is penetrated by the pivot axis.
- the second pivot axis is also arranged in a fixed position on the single sheet printer and a tension spring is provided as a tensioning element, which is fixed at one end to the single printer and at the other end to the second flap.
- a tension spring is provided as a tensioning element, which is fixed at one end to the single printer and at the other end to the second flap.
- the flaps can for example be formed from deep-drawn sheet metal or cast in one piece. According to a development of the invention, it is particularly advantageous that the two flaps are parts of profile strips that extend transversely to the paper path.
- the actuating device is a locking rod mounted in the first flap and extending transversely to the paper path, which engages in an abutment fixedly attached to the single sheet printer and has a pull button for unlocking.
- the first flap is positively held in its respective locking position;
- the locking bar can be operated from the outside of the mechanism of the single sheet printer using the pull button. If the flap is stiff enough, it is sufficient to lock it on one side only.
- a reliable mounting of the flap is achieved according to a development of the invention in that an abutment is arranged on both sides of the first flap.
- a bearing plate is attached to the first flap for better stiffening of the profiled strip and for storing additional elements, and extends transversely to the flap from the side facing away from the guide surface.
- the second flap On its side facing away from the guide surface, the second flap has a projecting web, at the end of which the second pivot axis is provided, the second pivot axis being connected to the protruding part of the bearing plate.
- a linkage can be arranged between the first flap, which has the actuating device, and the second flap, which ensures the movement control of the second flap.
- the second flap can be supported in the operating position via the first flap. Furthermore, a stationary abutment is provided which supports the second flap in its operating position. This ensures a stable and precise end position of the second flap.
- the abutment advantageously consists of a fixed backdrop, which is provided for receiving and supporting a sliding block which is attached to the second flap. When the second flap is swiveled into the operating position, the sliding block engages in the setting and supports the second flap.
- the backdrop is preferably arranged near the end of the second flap that faces away from the first flap.
- the link has two parallel guide webs, which preferably extend parallel to the guide surface of the second flap, the guide web facing away from the second flap being shortened such that the sliding block can be pivoted out of the link in front of this guide web when the two flaps are opened and when closing the flap runs against the longer guide bar and can be guided from this into the backdrop.
- the open end position of the second flap on the first could be limited by a catch, a lock or a suitable arrangement of the tension spring.
- a particularly simple and reliable embodiment, however, is to provide a stop on the bearing plate. The second flap is pulled against the stop by the tension spring and thus reliably assumes its end position.
- a particularly expedient arrangement of the above-mentioned second embodiment, in which both flaps are mounted on both sides of the opening in a fixed pivot bearing, is that the second flap has a projecting web on its rear side and close to it, which faces away from the first flap, with its web free end, the second pivot axis is connected, and that in the open position of the second flap a straight line running through the two ends of the tension spring intersects the second pivot axis.
- the tension spring thus holds the second flap in its open position, so that an additional stop or a lock for the second flap is not required, even if it is released in its open position from engagement with the first flap.
- the extension preferably serves not only to close the second flap, i.e. to keep in their operating position, but it is extended such that it engages behind the second flap when the first flap is closed and thus carries the second flap into the closed operating position.
- the extension could, for example, be designed as a bolt which is screwed into the profile rod forming the first flap.
- a particularly simple but stable configuration consists in that the extension is formed on a sheet metal which extends transversely to the first flap and is attached to the rear thereof.
- the wide but thin-walled sheet metal extension which is loaded in a direction transverse to its wall thickness, forms a light, rigid element.
- the sheet also stiffens the profile bar that forms the first flap.
- the extension can engage behind a separate guide block, which is formed on the second flap. It is also possible to make the second flap longer than the first so that the extension engages behind the second flap.
- a preferred embodiment of the invention is that the extension engages the articulation of the tension spring and is arranged laterally next to the second flap or opposite a slot in it, so that the pivoting paths of the second flap and the extension can overlap. All forces applied to the second flap are thus introduced into the tension spring linkage. The second flap itself remains essentially unloaded and can therefore be carried out easily.
- each flap can be operated and locked separately, and more than two flaps can be provided.
- FIG. 1 shows a schematic longitudinal view of a first embodiment of the flap arrangement according to the invention, in the operating position
- FIG. 3 shows the flap arrangement of FIG. 1 during opening or closing
- 4 shows a schematic longitudinal view of a second embodiment of the flap arrangement according to the invention, in the operating position
- Fig. 5 shows the valve assembly of Fig. 4 in the open position
- Fig. 6 shows the valve assembly of Fig. 4 during opening or closing.
- Fig. 1 several paper paths are shown in side view as dashed lines, which are limited by pinch or conveyor rollers 3.
- the paper paths are limited by guide surfaces for the single sheets; these guide surfaces are not shown here, with the exception of an arcuate section, in which the guide surface is formed by the outer surfaces of two adjoining flaps P1, P2 when they are in the operating position shown in FIG. 1.
- the two flaps P1 and P2 are located between two pairs of pinch rollers 3 of the paper path.
- Both flaps P1 and P2 are formed from a profile bar, each of which extends transversely to the paper path.
- the first profile rod P1 is formed from a hollow profile which is formed by the outer wall which is adjacent to the paper path and has an arcuate cross section, an inner wall which connects the ends like a string, and a stiffener which connects the approximate centers of the outer and inner walls to one another.
- the inner wall has a flat groove 10 near the first pivot point D2, with which it engages around the adjacent pinch roller in the open position (FIG. 2).
- a first pivot axis D2 extends along the first flap P1.
- the profile bar forming the first flap P1 has a profile section similar to a bore, into which pivot pins can be inserted at the ends of the profile bar, which are accommodated in fixed bearings of the single-sheet printer, not shown.
- FIG. 1 Another, similar to a bore training 11 of the profile bar is located at the junction of the outer wall and stiffener.
- This design is interspersed with a locking rod VI, which has at least one end of the first flap Pl an actuating button which serves to pull or push the locking rod VI in its longitudinal direction (in the profile direction of the first flap Pl) so that it is released from brackets, not shown, which are arranged on both sides of the first flap stationary. In its rest position, the locking rod VI holds the first flap P1 locked in the operating position shown in FIG. 1.
- a bearing plate L is placed thereon, which covers the stiffening and the part of the profile which faces away from the first pivot axis D2.
- the bearing plate extends far beyond the inner wall of the profile and forms a triangular leg, the tip pointing away from the first flap Pl is penetrated by a second pivot axis D1 and in the middle of which a stop AI (FIG. 2) is arranged, on the the first flap Pl facing side of the bearing plate L protrudes.
- a spring linkage 12 which protrudes from the end over the first flap P1 and the bearing plate L.
- the outer wall of the first flap P1 is adjacent to an arcuate section a of the paper path, which is followed by a straight section b, against which a wall of a second flap P2 is adjacent. This wall is bent away from the paper path at its edge facing the first flap Pl and there it overlaps the side of the first flap Pl facing the paper path.
- a first web 20 which extends in the direction of its profile and has a length that is almost half the length, projects The length of the flap corresponds.
- a thickening is formed with an interior similar to a bore, through which a second pivot axis D1 runs, which lies on an imaginary line between the pivot axis D2 and a sliding block G.
- This thickening is overlapped at both ends by the tip of the bearing plate L of the first flap P1; a pivot pin attached to this bearing plate L extends into the interior of the thickened portion.
- a second web 21 projects from the rear of the flap, the free edge of which is designed in the same way as that of the first web.
- the cylindrical sliding block G which extends in the profile direction, is fastened to the ends of this free edge.
- a spring link 22 is formed approximately in the middle between the two webs 20 and 21 at the ends.
- a tension spring ZI extends between the two spring linkages 12 and 22 of the two flaps P1 and P2 at each of their ends.
- a stationary, link-like guide F is arranged with a long guide web Fl parallel to the adjacent paper web and a short guide web F2, which is parallel to the long guide web Fl on the side of the long web which is remote from the paper web is arranged.
- the distance between the two guide webs F1 and F2 is dimensioned such that the sliding block G is displaceable and guided practically free of play between them.
- the sliding block G sits between the two guide webs F1 and F2, so that the second flap P2 is held on the one hand by the guide F and on the other hand by the second pivot axis D1, which is fixed because the locking rod VI holds the first flap Pl in its operating position.
- the sliding block G has meanwhile moved by the length of the arrow e along the guide web F1 and has thereby emerged from the engagement region of the holding web F2. If the pivoting movement of the locking rod VI is then continued, the open position shown in FIG. 2 is ultimately reached, the sliding block G covering the dash-dotted movement path g. In this open position, the locking rod VI can be locked again on the single sheet printer, so that the flap arrangement remains in the open position shown in FIG. 2.
- the sliding block G When closing, the sliding block G abuts against the guide web Fl of the guide F and is then moved along this until it reaches the space between the guide web Fl and the holding web F2. Now the first flap P1 is locked by means of the locking rod VI and in turn holds it in cooperation with the guide F.
- the edge of the second flap P2, which is remote from the first flap P1 engages in the feed area between the adjacent pinch rollers of the paper path. Only because of the arrangement according to the invention of the two flaps P1 and P2 can an opening of such a large width be made that facilitates access to the paper path, since the second flap P2 is first pivoted out of its operating position towards the first flap P1 before it is pivoted completely away from the paper path together with the first flap Pl.
- FIGS. 4 to 6 show a second embodiment of the flap arrangement which is attached to a paper path which is delimited by two pairs of pinch rollers 4 and 5 and is slightly angled approximately in the middle between them.
- the paper path is limited by two flaps P4 and P3 in their operating position, both of which, like the flaps P1 and P2 described above, consist of profiled bars which extend transversely to the paper web.
- the first flap P4 has a wall which is adapted to the course of the paper web and extends from the first pair of pinch rollers 5 to the middle of the distance from the second pair of pinch rollers 4.
- the side edge of the first flap P4, which faces the first pair of pinch rollers 5, is light bent away from the paper path to facilitate the entry of a sheet of paper at this point.
- a similar design is attached in the middle between the two edges of the first flap P4 and accommodates a locking bar V2, the structure and mode of operation of which corresponds to the locking bar VI described above of the first embodiment, and which, like this, the first flap P4 in the operating position shown in Fig. 4 releasably locked.
- an embodiment with an interior resembling a bore is formed on the edge of the first flap P4 facing the second flap P3 and on the free end edge of a web 40 which, for stiffening purposes, is located on the back of the wall of the first flap P4 near the reception of the locking rod V2 is attached and protrudes from the wall at right angles.
- a sheet metal B is attached to the end sides of the first flap P4, which is supported by the web 40 and by the part of the wall facing the second flap P3 and which has a finger which projects far in the direction of the second flap P3 and which has the reaches far behind second flap P3.
- the second flap P3 has a wall which extends into between the two first pinch rollers 4 and has a spring linkage and a guide pin on its rear side approximately in the middle between the two edges.
- the guide pin sits in a configuration that tion resembles, and near the first pinch rollers carries a web 30 projecting from the rear (the side facing away from the paper path).
- the web 30 has a thickening at its free end edge, through the interior of which the second pivot axis D3 runs, by means of which the second flap P3 is rotatably attached to the single sheet printer.
- the edge of the wall facing the first flap P4 does not reach all the way to the first flap P4 and is slightly bent away from the paper web.
- a tension spring Z2 is hinged at one end to the spring linkage of the second flap P3 and at the other end to a fixed point on the single sheet printer. This point lies at a distance from the center of the paper path covered by the two flaps P4 and P3 so that in the side view of FIG. 5 the track of the second pivot axis D3 and the two articulation points of the tension spring Z2 lie on a straight line.
- the first flap P4 is held by the locking rod V2, engages behind the guide pin of the second flap P3 with the finger of the sheet metal B and thereby holds it in its operating position, although from the tension spring Z2 to the second flap P3 Pulling force for opening works.
- the finger comes into contact with the guide pin on the second flap P3 and presses it towards the paper path. Since this load is offset with respect to the second pivot axis D3, the guide pin yields and runs along the edge of the finger lying against it, pivoting the second flap P3 until the flaps P4 and P3 have reached the operating position of FIG. 4.
- the profile bars that form the flaps P1 and P4 can be made of plastic or metal, preferably of an aluminum alloy.
- the bearing plates L and plates B are attached on one side to the two ends of the profile bars, which form the first flaps P1 and P4.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Registering Or Overturning Sheets (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19643636 | 1996-10-22 | ||
DE19643636 | 1996-10-22 | ||
PCT/DE1997/002467 WO1998018055A1 (de) | 1996-10-22 | 1997-10-22 | Klappenanordnung für den zugriff zu einem papierweg von einzelblattdruckern und -kopierern |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0934555A1 true EP0934555A1 (de) | 1999-08-11 |
EP0934555B1 EP0934555B1 (de) | 2002-01-09 |
Family
ID=7809494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97946740A Expired - Lifetime EP0934555B1 (de) | 1996-10-22 | 1997-10-22 | Klappenanordnung für den zugriff zu einem papierweg von einzelblattdruckern und -kopierern |
Country Status (4)
Country | Link |
---|---|
US (1) | US6236824B1 (de) |
EP (1) | EP0934555B1 (de) |
DE (2) | DE59706132D1 (de) |
WO (1) | WO1998018055A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6328303B1 (en) * | 1997-11-13 | 2001-12-11 | Canon Kabushiki Kaisha | Image forming apparatus with built-in surface reverse path |
US6674983B2 (en) * | 2000-11-20 | 2004-01-06 | Fuji Xerox Co., Ltd. | Image forming apparatus and sheet feeder |
US6640059B2 (en) * | 2001-12-20 | 2003-10-28 | Xerox Corporation | Apparatus for facilitating jam clearance in a printer |
DE10237300B4 (de) | 2002-08-14 | 2005-09-15 | OCé PRINTING SYSTEMS GMBH | Verfahren zur automatischen Behebung eines beim Betrieb einer elektrografischen Druck- oder Kopiereinrichtung auftretenden Fehlers |
US6964414B2 (en) * | 2003-09-24 | 2005-11-15 | Xerox Corporation | Jam clearance in a vertical sheet transport in a printing apparatus |
JP6946670B2 (ja) * | 2017-03-03 | 2021-10-06 | 富士フイルムビジネスイノベーション株式会社 | 搬送装置及び画像形成装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5275444A (en) | 1975-12-19 | 1977-06-24 | Minolta Camera Co Ltd | Electrophotographic copying machine |
EP0031726B1 (de) | 1979-12-29 | 1984-12-12 | Mita Industrial Co. Ltd. | Elektrostatisches Kopiergerät |
US4386845A (en) | 1979-12-29 | 1983-06-07 | Mita Industrial Company Limited | Electrostatic copying apparatus |
JPS57151954A (en) * | 1981-03-16 | 1982-09-20 | Fuji Xerox Co Ltd | Transfer paper conveyor of electrophotographic copying machine |
JPS59214064A (ja) * | 1983-05-20 | 1984-12-03 | Fuji Xerox Co Ltd | 定着装置 |
JPS60102348A (ja) * | 1983-11-09 | 1985-06-06 | Fuji Xerox Co Ltd | 複写機の紙送り装置 |
US5122841A (en) * | 1988-08-18 | 1992-06-16 | Canon Kabushiki Kaisha | Image forming apparatus |
JP2670470B2 (ja) * | 1991-06-19 | 1997-10-29 | キヤノン株式会社 | 画像形成装置 |
US5708946A (en) * | 1995-11-02 | 1998-01-13 | Eastman Kodak Company | Fuser skive mechanism mounting for facilitating jam clearance |
JP3544809B2 (ja) * | 1995-12-29 | 2004-07-21 | 株式会社リコー | 画像形成装置 |
US6145828A (en) * | 1997-11-28 | 2000-11-14 | Mita Industrial Co., Ltd. | Sheet conveyor single-handed parting engagement mechanism |
-
1997
- 1997-10-22 WO PCT/DE1997/002467 patent/WO1998018055A1/de active IP Right Grant
- 1997-10-22 EP EP97946740A patent/EP0934555B1/de not_active Expired - Lifetime
- 1997-10-22 DE DE59706132T patent/DE59706132D1/de not_active Expired - Fee Related
- 1997-10-22 US US09/284,821 patent/US6236824B1/en not_active Expired - Fee Related
- 1997-10-22 DE DE19781183T patent/DE19781183D2/de not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO9818055A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6236824B1 (en) | 2001-05-22 |
EP0934555B1 (de) | 2002-01-09 |
WO1998018055A1 (de) | 1998-04-30 |
DE19781183D2 (de) | 1999-12-23 |
DE59706132D1 (de) | 2002-02-28 |
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