EP0371409A2 - Manual sheet sending apparatus - Google Patents
Manual sheet sending apparatus Download PDFInfo
- Publication number
- EP0371409A2 EP0371409A2 EP89121756A EP89121756A EP0371409A2 EP 0371409 A2 EP0371409 A2 EP 0371409A2 EP 89121756 A EP89121756 A EP 89121756A EP 89121756 A EP89121756 A EP 89121756A EP 0371409 A2 EP0371409 A2 EP 0371409A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- chute plate
- sending apparatus
- lower chute
- chute
- 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
Images
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
- G03G15/65—Apparatus which relate to the handling of copy material
- G03G15/6502—Supplying of sheet copy material; Cassettes therefor
- G03G15/6514—Manual supply devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2407/00—Means not provided for in groups B65H2220/00 – B65H2406/00 specially adapted for particular purposes
- B65H2407/20—Means not provided for in groups B65H2220/00 – B65H2406/00 specially adapted for particular purposes for manual intervention of operator
- B65H2407/21—Manual feeding
-
- 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
- G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
- G03G2215/00379—Copy medium holder
- G03G2215/00383—Cassette
-
- 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
- G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
- G03G2215/00379—Copy medium holder
- G03G2215/00392—Manual input tray
-
- 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
- G03G2215/00544—Openable part of feed path
Definitions
- the present invention relates to an apparatus for manually sending a sheet (of paper) to a sheet feeder of a copying machine or a printer.
- a typical copying machine 100 has some sheet cassettes 101 and 102 for different sheet sizes as shown in Fig. 7. Since automatic sheet feeding from the sheet cassettes 101 and 102 is difficult for small and stiff sheets such as post cards or name cards, some copying machines are provided with a manual sheet-sending chute 103. In this case, a sheet feeding roller 104, 105 or 106 is prepared for each sheet cassette or the chute 101, 102 or 103. Since a sheet is handled in only one of those 101, 102 or 103 at one time, the sheet feeding rollers 104, 105 and 106 are redundant.
- Japanese Laid-open Utility Model Application No. S63-4034 discloses a sheet feeding mechanism including an automatic sheet-feeding cassette, a manual sheet-sending chute and a single sheet feeding roller where the sheet-sending chute is tiltable. When the sheet-sending chute is used, the end of the chute is brought near to the sheet feeding roller, and when it is not used, the end retires remote from the sheet feeding roller.
- the prior art mechanism needs a large stroke in moving the chute and much space to swing it.
- the large stroke needed to bring the chute to its operating position may sometimes cause difficulties in fixing it to the exact operable position.
- the present invention is achieved to solve various problems accompanying a conventional manual sheet-sending chute used with an automatically sheet-feeding sheet cassette.
- One of the object of the invention is to reduce the stroke and space needed to move the sheet-sending chute between the operable position and the retired position, and to facilitate the exact positioning of the chute at the operable position.
- Another object is to provide a smooth sheet sending through the chute even when an automatically sheet-feeding cassette is installed proximate to the manual sheet-sending chute.
- a further object of the present invention is to provide an engaging mechanism to the sheet-sending chute to retain it at the retired position even when a housing of a copying machine equipped with the chute is swung up.
- the apparatus of the present invention for sending a sheet of paper to a sheet feeder comprising an upper chute plate and a lower chute plate articulated to each other, each chute plate having an axis of rotation different from that of the other, with the apparatus fixable at two positions, one being an operable position where the upper chute plate and the lower chute plate make a substantially flat angle and an end of the lower chute plate is proximate to the sheet feeder and the other being a retired position where the upper chute plate and the lower chute plate make a different angle and the end of the lower chute plate is distant from the sheet feeder.
- the sheet sending apparatus of the present invention includes some other features which will be shown in the following description of the preferred embodiment and the attached drawings.
- Fig. 1 is a perspective view of a copying machine equipped with a manual sheet-sending apparatus according to the present invention.
- the manual sheet-sending apparatus (only whose upper chute 5 is shown in Fig. 1) is attached at the entrance 2 of the housing 7 of the copying machine 1.
- a sheet cassette 3 is also inserted in the entrance 2.
- the housing 7 is horizontally divided to allow maintenance of the inside.
- the manual sheet sending mode is indicated by the lamp 8 on the top of the housing 7.
- Fig. 2 shows the upper chute 5 and lower chute 6 of the manual sheet-sending apparatus 4 separately. Normally they engage via gears 12 and 16.
- the upper chute 5 is made one piece where the side ends 9 of the lower edge rise up from the chute plate to form semicircles with holes 10 at the center.
- the holes 10 are loosely mounted on an upper axis 11 fixed on the housing 7 (Figs. 3 and 4), thus allowing rotation of the upper chute 5.
- a first gear 12 At the lower part of the periphery of each end 9 is formed a first gear 12.
- the lower chute 6 is also formed one piece, including arms 13 (only one of which is shown in Fig. 2) extending downward from both sides of the chute plate.
- the lower ends of the arms 13 have holes 14 which are also loosely mounted on a lower axis 15 fixed on the housing 7 (Figs. 3 and 4), whereby the lower chute 6 rotates on the axis 15.
- a second gear 16 At the top of each arm 13 is formed a second gear 16 to be engaged with the first gear 12 of the upper chute 5.
- the chute plate of the lower chute 6 slants downward toward inside of the housing 7, with the lower edge 17 slightly turning upward.
- a notch 19 is formed at the center of the lower edge 17 for an antenna 18 of a sheet sensing switch SW2, and at both sides of the central notch 19 are formed side notches 20 for auxiliary sheet rollers 21.
- Fig. 3 shows the upper chute 5 and the lower chute 6 of the manual sheet-sending apparatus 4 at their retired positions, and Fig. 4 shows them at their operating positions.
- the upper chute 5 When the manual sheet-sending apparatus 4 is not used, the upper chute 5 is turned up until a tongue 31 on the semicircular end 9 abuts a stopper 30 fixed on the housing 7, when the chute plate is vertical as shown in Fig. 3. At this time, the lower chute 6 engaged with the upper chute 5 by the gears 12 and 16 is rotated clockwise in Fig. 3 on the lower axis 15. No stopper is needed for the lower chute because it is engaged with the upper chute via gears 12 and 16.
- the sheets of paper 22 stacked on a tray 24 are pushed up by a spring 26 against a sheet feeding roller 28 at the front part of the sheet cassette 3, and only the uppermost sheet in the sheet cassette 3 is assuredly fed by the roller 28 into the copying machine 1 with the aide of the separator 27.
- the lower chute 6 keeps clear of the sheet stack 22 at this retired position, and works as an upper sheet guide while the sheets in the cassette 3 are fed.
- the upper chute 5 When the manual sheet-sending apparatus 4 is to be used, the upper chute 5 is pulled backward disengaging the protrusion 34 from the bump 36 against the spring 37 force (Fig. 5).
- the upper chute 5 rotates on the upper axis 11 until the edge 32 of the upper gear 12 abuts the stopper 30, as shown in Fig. 4.
- the lower chute 6 rotates counterclockwise this time and the lower end 17 of the chute plate of the lower chute 6 press down the sheet stack 22 separating it from the sheet feeding roller 28, whereby the sheets 22 in the sheet cassette 3 are not fed.
- the chute plates of the upper chute 5 and lower chute 6 become flush to smoothly pass a sheet.
- the upper chute 5 When the upper chute 5 is tilted down, it turns on a transition switch (not shown) to enter the manual sheet sending mode.
- the manual sheet sending mode is indicated by the lamp 8 on the housing 7.
- the sheet sensing switch SW2 When the sheet sensing switch SW2 is turned on by a sheet sliding down the chute plates in the manual sheet sending mode, the sheet feeding roller 28 begins to rotate and the sheet is fed into the copying machine 1.
- the auxiliary rollers 21 reduce friction between the sheet and the lower chute plate while the sheet is fed, assuring smoother movement of the sheet, and the upturn 17 of the lower edge of the lower chute plate helps the sheet overpassing the separator 27 and prevents it from falling down in the sheet cassette 3.
- the sheet-sending apparatus of the present invention is featured by the separate chutes. Since they rotate on different axes, the tilting stroke and the moving space of the chutes are small.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manual Feeding Of Sheets (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Paper Feeding For Electrophotography (AREA)
Abstract
Description
- The present invention relates to an apparatus for manually sending a sheet (of paper) to a sheet feeder of a copying machine or a printer.
- A
typical copying machine 100 has somesheet cassettes sheet cassettes sending chute 103. In this case, asheet feeding roller chute sheet feeding rollers - Japanese Laid-open Utility Model Application No. S63-4034 discloses a sheet feeding mechanism including an automatic sheet-feeding cassette, a manual sheet-sending chute and a single sheet feeding roller where the sheet-sending chute is tiltable. When the sheet-sending chute is used, the end of the chute is brought near to the sheet feeding roller, and when it is not used, the end retires remote from the sheet feeding roller.
- The prior art mechanism, however, needs a large stroke in moving the chute and much space to swing it. The large stroke needed to bring the chute to its operating position may sometimes cause difficulties in fixing it to the exact operable position.
- The present invention is achieved to solve various problems accompanying a conventional manual sheet-sending chute used with an automatically sheet-feeding sheet cassette. One of the object of the invention is to reduce the stroke and space needed to move the sheet-sending chute between the operable position and the retired position, and to facilitate the exact positioning of the chute at the operable position. Another object is to provide a smooth sheet sending through the chute even when an automatically sheet-feeding cassette is installed proximate to the manual sheet-sending chute. A further object of the present invention is to provide an engaging mechanism to the sheet-sending chute to retain it at the retired position even when a housing of a copying machine equipped with the chute is swung up.
- Those and other objects are achieved by the apparatus of the present invention for sending a sheet of paper to a sheet feeder comprising an upper chute plate and a lower chute plate articulated to each other, each chute plate having an axis of rotation different from that of the other, with the apparatus fixable at two positions, one being an operable position where the upper chute plate and the lower chute plate make a substantially flat angle and an end of the lower chute plate is proximate to the sheet feeder and the other being a retired position where the upper chute plate and the lower chute plate make a different angle and the end of the lower chute plate is distant from the sheet feeder.
- The sheet sending apparatus of the present invention includes some other features which will be shown in the following description of the preferred embodiment and the attached drawings.
-
- Fig. 1 is a perspective view of a copying machine equipped with the manual sheet-sending apparatus of the present invention and a sheet cassette.
- Fig. 2 is a separate perspective view of the upper chute and the lower chute of the sheet-sending apparatus.
- Fig. 3 is a side view of the sheet-sending apparatus and the sheet cassette when the sheet-sending apparatus is at the retired position.
- Fig. 4 is a side view of the sheet-sending apparatus and the sheet cassette when the sheet-sending apparatus is at the operable position.
- Fig. 5 is a perspective view of the upper chute of the sheet-sending apparatus when it is retained on the upper housing of the copying machine.
- Fig. 6 shows the movement of the upper chute while the upper housing is swung up.
- Fig. 7 is an explanatory side view of a prior art copying machine equipped with a manual sheet-sending apparatus and two sheet cassettes.
- Fig. 1 is a perspective view of a copying machine equipped with a manual sheet-sending apparatus according to the present invention. The manual sheet-sending apparatus (only whose
upper chute 5 is shown in Fig. 1) is attached at theentrance 2 of thehousing 7 of thecopying machine 1. Asheet cassette 3 is also inserted in theentrance 2. Thehousing 7 is horizontally divided to allow maintenance of the inside. The manual sheet sending mode is indicated by thelamp 8 on the top of thehousing 7. - Fig. 2 shows the
upper chute 5 andlower chute 6 of the manual sheet-sending apparatus 4 separately. Normally they engage viagears upper chute 5 is made one piece where the side ends 9 of the lower edge rise up from the chute plate to form semicircles withholes 10 at the center. Theholes 10 are loosely mounted on anupper axis 11 fixed on the housing 7 (Figs. 3 and 4), thus allowing rotation of theupper chute 5. At the lower part of the periphery of eachend 9 is formed afirst gear 12. - The
lower chute 6 is also formed one piece, including arms 13 (only one of which is shown in Fig. 2) extending downward from both sides of the chute plate. The lower ends of thearms 13 haveholes 14 which are also loosely mounted on alower axis 15 fixed on the housing 7 (Figs. 3 and 4), whereby thelower chute 6 rotates on theaxis 15. At the top of eacharm 13 is formed asecond gear 16 to be engaged with thefirst gear 12 of theupper chute 5. The chute plate of thelower chute 6 slants downward toward inside of thehousing 7, with thelower edge 17 slightly turning upward. Anotch 19 is formed at the center of thelower edge 17 for anantenna 18 of a sheet sensing switch SW₂, and at both sides of thecentral notch 19 are formedside notches 20 forauxiliary sheet rollers 21. - Fig. 3 shows the
upper chute 5 and thelower chute 6 of the manual sheet-sending apparatus 4 at their retired positions, and Fig. 4 shows them at their operating positions. - When the manual sheet-sending apparatus 4 is not used, the
upper chute 5 is turned up until atongue 31 on thesemicircular end 9 abuts astopper 30 fixed on thehousing 7, when the chute plate is vertical as shown in Fig. 3. At this time, thelower chute 6 engaged with theupper chute 5 by thegears lower axis 15. No stopper is needed for the lower chute because it is engaged with the upper chute viagears paper 22 stacked on atray 24 are pushed up by aspring 26 against asheet feeding roller 28 at the front part of thesheet cassette 3, and only the uppermost sheet in thesheet cassette 3 is assuredly fed by theroller 28 into thecopying machine 1 with the aide of theseparator 27. Thelower chute 6 keeps clear of thesheet stack 22 at this retired position, and works as an upper sheet guide while the sheets in thecassette 3 are fed. - When the
upper chute 5 is turned up, it is held there by the engagement mechanism shown in Fig. 5. Asmall projection 34 on the right edge of theupper chute 5 overrides astretched bump 36 rising from theengaging plate 35 supported on thehousing 7 while theupper chute 5 is pressed rightward by aspring 37. Thebump 36 on theengaging plate 35 stretches along the movement of theprojection 34 so that theprojection 34 does not fall down even when the upper part of thehousing 7 is swung up, as shown in Fig. 6, to deal with sheet jamming (since the rotating axis of the upper housing and that of theupper chute 5 are different, theupper chute 5 moves upward in relation to the upper housing). - When the manual sheet-sending apparatus 4 is to be used, the
upper chute 5 is pulled backward disengaging theprotrusion 34 from thebump 36 against thespring 37 force (Fig. 5). Theupper chute 5 rotates on theupper axis 11 until theedge 32 of theupper gear 12 abuts thestopper 30, as shown in Fig. 4. Thelower chute 6 rotates counterclockwise this time and thelower end 17 of the chute plate of thelower chute 6 press down thesheet stack 22 separating it from thesheet feeding roller 28, whereby thesheets 22 in thesheet cassette 3 are not fed. When theupper chute 5 is stopped by thestopper 30, the chute plates of theupper chute 5 andlower chute 6 become flush to smoothly pass a sheet. When theupper chute 5 is tilted down, it turns on a transition switch (not shown) to enter the manual sheet sending mode. The manual sheet sending mode is indicated by thelamp 8 on thehousing 7. When the sheet sensing switch SW₂ is turned on by a sheet sliding down the chute plates in the manual sheet sending mode, thesheet feeding roller 28 begins to rotate and the sheet is fed into thecopying machine 1. Theauxiliary rollers 21 reduce friction between the sheet and the lower chute plate while the sheet is fed, assuring smoother movement of the sheet, and theupturn 17 of the lower edge of the lower chute plate helps the sheet overpassing theseparator 27 and prevents it from falling down in thesheet cassette 3. - As described above, the sheet-sending apparatus of the present invention is featured by the separate chutes. Since they rotate on different axes, the tilting stroke and the moving space of the chutes are small.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63303089A JP2524388B2 (en) | 1988-11-30 | 1988-11-30 | Feeder |
JP303089/88 | 1988-11-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0371409A2 true EP0371409A2 (en) | 1990-06-06 |
EP0371409A3 EP0371409A3 (en) | 1991-01-02 |
EP0371409B1 EP0371409B1 (en) | 1993-08-04 |
Family
ID=17916759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890121756 Expired - Lifetime EP0371409B1 (en) | 1988-11-30 | 1989-11-24 | Manual sheet sending apparatus |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0371409B1 (en) |
JP (1) | JP2524388B2 (en) |
DE (1) | DE68908106T2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0444222B1 (en) * | 1990-02-26 | 1994-07-13 | Mita Industrial Co. Ltd. | Sheet sending apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6237246B2 (en) * | 2014-01-15 | 2017-11-29 | 株式会社リコー | Bottom plate pressing mechanism and image forming apparatus |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3135751A1 (en) * | 1980-09-10 | 1982-04-15 | Sharp K.K., Osaka | "DEVICE FOR SELECTING MANUAL OR AUTOMATIC PAPER FEEDING IN A COPIER" |
JPS5835557A (en) * | 1981-08-27 | 1983-03-02 | Canon Inc | Copying machine with manual insertion mechanism |
JPS5955452A (en) * | 1982-09-24 | 1984-03-30 | Fuji Xerox Co Ltd | Paper feeder for copying machine |
JPS5968758A (en) * | 1982-10-13 | 1984-04-18 | Fuji Xerox Co Ltd | Paper feeding device |
JPS634034Y2 (en) * | 1981-09-30 | 1988-02-01 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0228524Y2 (en) * | 1981-02-05 | 1990-07-31 | ||
JPS58139935A (en) * | 1982-02-13 | 1983-08-19 | Canon Inc | Manually fed paper sheet feeding guide |
JPS59194954A (en) * | 1983-04-15 | 1984-11-05 | Fuji Xerox Co Ltd | Business-form transportation apparatus |
JPH0671950B2 (en) * | 1985-02-12 | 1994-09-14 | 株式会社リコー | Paper feeder |
JPS61163263U (en) * | 1985-03-29 | 1986-10-09 |
-
1988
- 1988-11-30 JP JP63303089A patent/JP2524388B2/en not_active Expired - Lifetime
-
1989
- 1989-11-24 EP EP19890121756 patent/EP0371409B1/en not_active Expired - Lifetime
- 1989-11-24 DE DE1989608106 patent/DE68908106T2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3135751A1 (en) * | 1980-09-10 | 1982-04-15 | Sharp K.K., Osaka | "DEVICE FOR SELECTING MANUAL OR AUTOMATIC PAPER FEEDING IN A COPIER" |
JPS5835557A (en) * | 1981-08-27 | 1983-03-02 | Canon Inc | Copying machine with manual insertion mechanism |
JPS634034Y2 (en) * | 1981-09-30 | 1988-02-01 | ||
JPS5955452A (en) * | 1982-09-24 | 1984-03-30 | Fuji Xerox Co Ltd | Paper feeder for copying machine |
JPS5968758A (en) * | 1982-10-13 | 1984-04-18 | Fuji Xerox Co Ltd | Paper feeding device |
Non-Patent Citations (4)
Title |
---|
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 31, no. 4, September 1988, pages 344-346, New York, US; "Printer having single sheet bypass" * |
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 117 (P-198)[1262], 21st May 1983; & JP-A-58 035 557 (CANON K.K.) 02-03-1983 * |
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 157 (P-288)[1594], 20th July 1984; & JP-A-59 055 452 (FUJI XEROX K.K.) 30-03-1984 * |
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 175 (P-294)[1612], 11th August 1984; & JP-A-59 068 758 (FUJI XEROX K.K.) 18-04-1984 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0444222B1 (en) * | 1990-02-26 | 1994-07-13 | Mita Industrial Co. Ltd. | Sheet sending apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP0371409B1 (en) | 1993-08-04 |
JP2524388B2 (en) | 1996-08-14 |
EP0371409A3 (en) | 1991-01-02 |
DE68908106T2 (en) | 1994-01-13 |
JPH02147523A (en) | 1990-06-06 |
DE68908106D1 (en) | 1993-09-09 |
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