EP0371409A2 - Appareil permettant l'activation manuelle de l'envoi d'une feuille - Google Patents

Appareil permettant l'activation manuelle de l'envoi d'une feuille Download PDF

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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
Application number
EP89121756A
Other languages
German (de)
English (en)
Other versions
EP0371409A3 (fr
EP0371409B1 (fr
Inventor
Takashi Nagashima
Toshiyuki Nakamura
Hideo Fukuda
Masanori Toyoda
Naoki Nakashima
Ichiro Takahashi
Munetaka Mukainishi
Shouichi Kitagawa
Masayoshi Okada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Publication of EP0371409A2 publication Critical patent/EP0371409A2/fr
Publication of EP0371409A3 publication Critical patent/EP0371409A3/fr
Application granted granted Critical
Publication of EP0371409B1 publication Critical patent/EP0371409B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)
  • Paper Feeding For Electrophotography (AREA)
  • Manual Feeding Of Sheets (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP19890121756 1988-11-30 1989-11-24 Appareil permettant l'activation manuelle de l'envoi d'une feuille Expired - Lifetime EP0371409B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP303089/88 1988-11-30
JP63303089A JP2524388B2 (ja) 1988-11-30 1988-11-30 給送装置

Publications (3)

Publication Number Publication Date
EP0371409A2 true EP0371409A2 (fr) 1990-06-06
EP0371409A3 EP0371409A3 (fr) 1991-01-02
EP0371409B1 EP0371409B1 (fr) 1993-08-04

Family

ID=17916759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890121756 Expired - Lifetime EP0371409B1 (fr) 1988-11-30 1989-11-24 Appareil permettant l'activation manuelle de l'envoi d'une feuille

Country Status (3)

Country Link
EP (1) EP0371409B1 (fr)
JP (1) JP2524388B2 (fr)
DE (1) DE68908106T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444222B1 (fr) * 1990-02-26 1994-07-13 Mita Industrial Co. Ltd. Appareil d'alimentation en feuilles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6237246B2 (ja) * 2014-01-15 2017-11-29 株式会社リコー 底板押し下げ機構と画像形成装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135751A1 (de) * 1980-09-10 1982-04-15 Sharp K.K., Osaka "vorrichtung zur wahlweise manuellen oder automatis chen papierzufuehrung in einem kopiergeraet"
JPS5835557A (ja) * 1981-08-27 1983-03-02 Canon Inc 手差し機構を有する複写機
JPS5955452A (ja) * 1982-09-24 1984-03-30 Fuji Xerox Co Ltd 複写機用給紙装置
JPS5968758A (ja) * 1982-10-13 1984-04-18 Fuji Xerox Co Ltd 給紙装置
JPS634034Y2 (fr) * 1981-09-30 1988-02-01

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0228524Y2 (fr) * 1981-02-05 1990-07-31
JPS58139935A (ja) * 1982-02-13 1983-08-19 Canon Inc 手差しシ−ト案内装置
JPS59194954A (ja) * 1983-04-15 1984-11-05 Fuji Xerox Co Ltd 用紙送り出し装置
JPH0671950B2 (ja) * 1985-02-12 1994-09-14 株式会社リコー 給紙装置
JPS61163263U (fr) * 1985-03-29 1986-10-09

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135751A1 (de) * 1980-09-10 1982-04-15 Sharp K.K., Osaka "vorrichtung zur wahlweise manuellen oder automatis chen papierzufuehrung in einem kopiergeraet"
JPS5835557A (ja) * 1981-08-27 1983-03-02 Canon Inc 手差し機構を有する複写機
JPS634034Y2 (fr) * 1981-09-30 1988-02-01
JPS5955452A (ja) * 1982-09-24 1984-03-30 Fuji Xerox Co Ltd 複写機用給紙装置
JPS5968758A (ja) * 1982-10-13 1984-04-18 Fuji Xerox Co Ltd 給紙装置

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444222B1 (fr) * 1990-02-26 1994-07-13 Mita Industrial Co. Ltd. Appareil d'alimentation en feuilles

Also Published As

Publication number Publication date
EP0371409A3 (fr) 1991-01-02
JP2524388B2 (ja) 1996-08-14
DE68908106T2 (de) 1994-01-13
JPH02147523A (ja) 1990-06-06
DE68908106D1 (de) 1993-09-09
EP0371409B1 (fr) 1993-08-04

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