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1. 发明专利

JPS63171720A SHEET SUPPLY AND FEED DEVICE 失效
公开(公告)号：JPS63171720A
公开(公告)日：1988-07-15
申请号：JP284987
申请日：1987-01-08
申请人： CANON KK
发明人： SAKAI SHUNICHI , KOIKE MICHIRO , YANAGIDA IKUKO
IPC分类号： B65H1/26
摘要： PURPOSE:To make a sheet suppliable in keeping a cassette attached intact, by making a lifter-down regulation so as to be released with a cassette opening action and to be restored to the regulating position with the closing action, while automating the closing action of a cassette cover, in the case of a cassette type sheet supply and feed device for a copying machine or the like. CONSTITUTION:When a sheet is supplied to a cassette C in attachedness, a sensor 26 is operated with a cassette cover 25 opened, while a pressing plate 25d pushes up a projected engaging part 21b of a rising ratchet lever. With this operation, the ratchet lever is selected, and down-regulation of a lifter 12 is released free, thus it is made to go down with its own weight. Therefore, an intermediate plate 10 also goes down so that sheet supply onto this intermediate plate 10 is made performable. If the cassette cover 25 is closed, it moves in reverse, and is restored to the down-regulation state. And, even if a copy button is operated as keeping the cover 25 opened intact, this cover is closed by operation of the sensor 26. With this constitution, the sheet supply is performable as the cassette is left attached intact.

2. 发明专利

JPS63176227A SHEET SUPPLY DEVICE 失效
公开(公告)号：JPS63176227A
公开(公告)日：1988-07-20
申请号：JP709887
申请日：1987-01-14
申请人： CANON KK
发明人： KOIKE MICHIRO , YANAGIDA IKUKO , SAKAI SHUNICHI
IPC分类号： B65H1/18 , B65H1/26
摘要： PURPOSE:To prevent the generation of harsh click-clack noises by providing a second lifter drop regulating means in addition to a lifter drop regulating means. CONSTITUTION:When a small amount of sheets are replenished and received in a cassette, a solenoid 36 is excited by signals, and an arm 15b of a ratchet lever 15 is pulled up to release a claw 15a of the ratchet lever from the engagement with ratchet teeth 11a of a ratchet gear 11. And the sheet is lifted by a lifter 5 until it approaches a paper supply roller with the claw 15a being released from the engagement with the ratchet teeth 11a. Thus, when the uppermost surface of sheet is lifted to a predetermined level adjacent the paper supply roller, the solenoid 36 is released from excitation by signals so that the claw 15a of ratchet lever 15 is placed under the drop regulating condition to engage the ratchet teeth 11a by a spring 19 and the ratchet lever 15 is lifted by a lifter 5 to contact the paper supply roller.

3. 发明专利

JPH02253282A PICTURE HEAT-FIXING DEVICE 失效
公开(公告)号：JPH02253282A
公开(公告)日：1990-10-12
申请号：JP7625389
申请日：1989-03-28
申请人： CANON KK
发明人： YANAGIDA IKUKO
IPC分类号： G03G15/20
摘要： PURPOSE:To prevent a film material from being damaged such as scratching, shaving and cracking and to prolong the life of the film material by providing a step between a heating body and supporting body and bringing them into non-contact with the traveling film material. CONSTITUTION:A groove 22a, in which the heating body 21 is fitted, is provided on the under the surface of the supporting body 22, being a surface which a fixing film abuts on and slides into. The heating body 21 is fitted into this groove 22a and fixed and supported to the supporting body 22 by means such as a double coated adhesive tape or an adhesive. Consequently, the supporting body parts 22b and 22c are projected from the outer surface of the heating body 21, and a stepped part (d) is constituted between them and the outer surface of heating body 21. Therefore, such problems are solved that the traveling film material surface is scratched, shaved and cracked by an edge part on the side of the supporting body.

4. 发明专利

JPH01202777A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH01202777A
公开(公告)日：1989-08-15
申请号：JP2664088
申请日：1988-02-09
申请人： CANON KK
发明人： YANAGIDA IKUKO , TANAKA HIDETOSHI , MIZUTANI MORIKAZU , EHATA TOKITAKA , OKADA TAMOTSU , AOKI KAZUAKI
IPC分类号： G03G15/04 , G03G15/043
摘要： PURPOSE:To enable image exposure to be carried out responding to different sizes of originals with a simple constitution by allowing each driving part to engage only in each specified direction to an exposure switching mechanism at the time of original platen scanning. CONSTITUTION:The driving members (cam) 12-14 are provided at least three places to respond to each edge part of the scanning direction of the originals O, which are of different sizes, and when the original platen 1 is scanned, each driving members 12-14 is allowed to engage to the exposure switching mechanism only from specified directions. Therefore, even when placing a large-sized original O, the original platen scanning can be carried out without engaging the driving members 12-14, which are provided responding to an edge of a small-sized original, to the exposure switching mechanism, carrying out the specified image formation keeping the exposure condition to the image carrier 3 as it is. Thus by preventing the exposure condition switching against a small- sized original O, unnecessary scanning can be prevented.

5. 发明专利

JPH04128772A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH04128772A
公开(公告)日：1992-04-30
申请号：JP24919790
申请日：1990-09-19
申请人： CANON KK
发明人： YANAGIDA IKUKO
IPC分类号： G03B27/62 , G03G15/00
摘要： PURPOSE:To simplify structure and to reduce cost by providing a preventive member that prevents a pressing plate from opening by being engaged with the pressing plate interlocked with the handle at time of transportation. CONSTITUTION:The preventive member 6 is provided to prevent the pressing board 3 from opening by being engaged to the pressing plate 3 interlocked with the handle 5, that is installed on a main body 1 for transportation of the device when the device is transported. Accordingly, as the opening of the pressing plate 3 is prevented by the preventive member 6 interlocked with the handle 5 to be used for transportation of the device, when the handle 5 is used for transportation, the opening of the pressing plate 3 is prevented without fail, while an image process is under operation, besides the occasion of being transported, the opening prevention of the pressing plate 3 interlocked with the handle is released, and consequently a member for the sole purpose of preventing the pressing board 3 from opening becomes unnecessary. Thus, the structure can be simplified and the cost is reduced.

6. 发明专利

JPH03180859A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH03180859A
公开(公告)日：1991-08-06
申请号：JP31874589
申请日：1989-12-11
申请人： CANON KK
发明人： TANAKA HIDETOSHI , AOKI KAZUAKI , OKUDA KAZUHISA , YANAGIDA IKUKO , AZUMA MASAMUTSU , YAMAGUCHI YOSHIMASU , OKADA TAMOTSU , KOSHIMIZU YOSHIYUKI , KITAJIMA ICHIJI , NAGATA HIDETOSHI , KONNO SHINICHI , MIZUTANI MORIKAZU
IPC分类号： G03G15/00 , G03G21/00 , G03G21/16
摘要： PURPOSE:To prevent an original placing means from being moved even in the case that a copying operation is erroneously started while keeping an ejecting means locked because of a mistake, etc., by an operator by making the locking force of a locking means for locking the ejecting means stronger than the driving force of the original placing means. CONSTITUTION:Projecting parts 19c and 19d are projectingly provided on both side edges of the back board 19b of the ejecting tray 19, and the projecting parts 1c and 1d which are applicable to the projecting parts 19c and 19d are disposed on the side surface of a housing 1a so that both of them can be engaged with each other. Then, the locking force between the projecting part 19c on the driving source side of an original placing board and an original press-contacting board 2b functioning as the original placing means and the projecting part 1c on the housing 1a side is constituted so as to be made stronger than the locking force between the projecting part 19d and the projecting part 1d on the operator side. That means, it is made stronger than the driving force of the original placing means. Thus, the original placing means can be surely prevented from being moved even in the case that the copying operation is erroneously started by the operator in a state that the ejecting tray 19 is folded and locked with the housing 1a.

7. 发明专利

JPH0387781A FIXING DEVICE 失效
公开(公告)号：JPH0387781A
公开(公告)日：1991-04-12
申请号：JP22401089
申请日：1989-08-30
申请人： CANON KK
发明人： YANAGIDA IKUKO
IPC分类号： G03G15/20 , G03G15/00
摘要： PURPOSE:To miniatuarize a device and to improve the reliability of operations in overall paper feeding stages by providing a fixing film driving member with an ejected paper carrying function. CONSTITUTION:A pressurizing roller 5 pressurizes a heating body 6 through the fixing film 1, and rotates in press-contact with the fixing film 1. Unfixed toner 9 on a transfer material 4 is lead to a fixing part by an entrance guide 10, and a fixed picture can be obtained through heating. Then, the fixed transfer material 4 is peeled from the fixing film 1 by a separating roller 7 and ejected to a paper ejecting tray 8 by the separating roller 7 and a roller 12 while it is peeled. Thus, since the overall paper feeding stages such as fixing, separating and ejecting are carried out in a single constitution, the reliability of paper feeding operations is improved.

8. 发明专利

JPH01116566A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH01116566A
公开(公告)日：1989-05-09
申请号：JP27428187
申请日：1987-10-29
申请人： CANON KK
发明人： MIZUTANI MORIKAZU , TANAKA HIDETOSHI , YANAGIDA IKUKO , OKADA TAMOTSU , AOKI KAZUAKI , EHATA TOKITOU
IPC分类号： G03G15/00
摘要： PURPOSE:To attain miniaturization and to reduce weight by integrating a cam part with an energizing means. CONSTITUTION:A torsion bar 34 is provided to rotate centering around a point 36 deviated from the center of rotation and one end part thereof is fixed on a 1st main body part 31. The cam parts 34a and 34b which control rotation moment acting to a 2nd main body part 32 according to the opening position of the 2nd main body part 34 are integrated with the torsion bar 34. Thus, the angle E of a cam part 32a and the relation between the center of rotation 33 and the center of rotation 36 can be selected and the moment acting to the part of interval L2 becomes small, so that the deformation of the 2nd main body part 32 can be made small. Since rigidity can be made small, the reduction in weight such as molding the 2nd main body part or the reduction of reinforcing members can be attained.

9. 发明专利

JPH04204668A IMAGE FORMING DEVICE FOR CLASSIFYING DEVICE 失效
公开(公告)号：JPH04204668A
公开(公告)日：1992-07-27
申请号：JP33383190
申请日：1990-11-30
申请人： CANON KK
发明人： YANAGIDA IKUKO
IPC分类号： G03G21/00 , B65H33/08 , B65H39/11 , G03G15/00
摘要： PURPOSE:To classify the bundles copied for every original by adopting a configulation so that a classifying tray serving as a paper ejecting tray as well is moved between first and second positions when plural originals are copied, and a movement between two positions is switched by means of interlocking the action of a pressing plate when the originals are exchanged. CONSTITUTION:A changeover switch 3 is provided on an original platen 2. The shaft 6 of the paper ejecting tray 5 for receiving the elected sheet is attached on the front/rear side plates, so that a thrust direction can be moved. A part of a changeover lever 4 perpendicular to the shaft 6 is protruded on the top surface of the upper part of a main body. The position of the paper ejecting tray is changed over by the changeover switch 3 and the changeover lever 4, to obtain the classifying tray. When plural copies are carried out from the original, the original platen 2 is reciprocated on a prescribed circuit, and in this time, the tray 5 is loaded with a copy sheet at the same position without being shifted. when the pressing plate 30 is opened for exchanging the original after the copying is carried out, the changeover switch 3 is changed over. The paper ejecting tray 5 exists on the second position accompanying with this, so that the classifying of the ejected sheet is carried out.

10. 发明专利

JPH03242639A DOCUMENT PRESS-CONTACTING DEVICE 失效
公开(公告)号：JPH03242639A
公开(公告)日：1991-10-29
申请号：JP4023790
申请日：1990-02-20
申请人： CANON KK
发明人： YANAGIDA IKUKO
IPC分类号： G03B27/62 , G03G15/04
摘要： PURPOSE:To assemble the document press-contacting device without any play even when size tolerance is set roughly and to reduce the cost by providing a spacer member between a 1st part where a document is pressed and a 2nd part where the 1st part is coupled with an original platen rotatably and pressing one surface. CONSTITUTION:A 1st member 3 presses the sheet document (d) mounted on original platen glass 51 across a sheet 12 for pressing and a 2nd member 2 engages with the original platen 50 through hinges 10 and 11 and leave the original platen 50 around the hinges as the centers of rotation when a thick body is copied. The members 2 and 3 constitute a hinge coupling part by fitting dowels 4 and 7 in holes 14 and 17 and projections 5 and 6 for abutting and a slit 8 are provided to the side wall 9 of the member 2. When the projections abut on the member 3 to apply pressing force, the side wall which becomes easy to deflect because of the slit deflects, so that the play of the hinge part can be absorbed even when the size tolerance is set roughly. Pressing only in a closed state or invariable pressing can be selected according to the positions of the projections.

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