专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2000247466A PAPER FEEDING DEVICE AND IMAGE FORMING DEVICE PROVIDED WITH THE SAME 失效
公开(公告)号：JP2000247466A
公开(公告)日：2000-09-12
申请号：JP4384399
申请日：1999-02-22
申请人： CANON KK
发明人： TAMURA MASASHIGE
IPC分类号： B65H3/46 , B65H1/26
摘要： PROBLEM TO BE SOLVED: To provide a paper feeding device capable of holding a door (member) at desired open angle when the door is opened and having a simple structure for detecting opening and closing of the door, releasing pressure-contact of a separation and paper feeding means, and retracting a conveyance means and an image forming device provided with the paper feeding device. SOLUTION: A detection means 4 detects opening of a door (member) by a pressing part 3 provided on the door 10 due to the travel of a travelling member 1 when the door 10 is opened to engage the pressing part 3 of the door 10 with an engaging means 1A provided in the travelling member 1 when the door 10 is opened by a predetermined angle so as to hold the door 10 in a condition in which it is opened by the predetermined angle. Further, when the door 10 is opened, a parting mechanism making a conveyance means apart from a sheet when the conveyance means is in contact with the sheet stored in a sheet storage part and a pressure contact release mechanism which separates and feeds sheets fed from the conveyance means one by one and makes a pair of separation and feeding means in pressure-contact apart each other are operated by an operation member 2 operated in the interlocking relationship with the travel of the travelling member 1.

2. 发明专利

JP2001220029A SHEET FEEDER AND IMAGE FORMING DEVICE USING THE SAME AS WELL AS IMAGE READER 失效
公开(公告)号：JP2001220029A
公开(公告)日：2001-08-14
申请号：JP2000028293
申请日：2000-02-04
申请人： CANON KK
发明人： TAMURA MASASHIGE
IPC分类号： B65H3/06 , B65H3/52 , G06T1/00 , H04N1/00
摘要： PROBLEM TO BE SOLVED: To provide a sheet feeder for improving the durability of separating and feeding means, and an image forming device using the same. SOLUTION: The separating and feeding means having a feeding roller 6 for rolling in the direction of feeding sheets (transfer paper) and a separating roller 7A for rolling in the direction of returning the sheets to sheet storage means while contacting the feeding roller 6 is used for feeding the sheets fed by the feeding means after separated one by one. The friction coefficient of the separating roller 7A is determined so that the relationships of a friction coefficient μBC between the feeding roller 6 and the separating roller 7A, a friction coefficient μBP between the feeding roller 6 and the sheet, a friction coefficient μCP between the separating roller 7A and the sheet, a friction coefficient μPP between the sheets, the forcible contact force N of the separating roller 7A, the idling torque T of a torque limiter and the effective radius (r) of the separating roller 7A are satisfied with μBCN>T/r, μBP>μCP, Tr>μCPN>μPPN.

3. 发明专利

JP2000211756A PAPER FEEDING DEVICE AND IMAGE FORMING DEVICE PROVIDED WITH IT 失效
公开(公告)号：JP2000211756A
公开(公告)日：2000-08-02
申请号：JP975099
申请日：1999-01-18
申请人： CANON KK
发明人： TAMURA MASASHIGE
IPC分类号： B65H3/52
摘要： PROBLEM TO BE SOLVED: To provide a paper feeding device and an image forming device provided with it capable of feeding a paper in the state that a space for feeding the paper including an overlapping quantity is made small and stable while accepting an overlapping feeding. SOLUTION: A prior sheet P1 and a subsequent sheet P2 are conveyed to an abutting portion N of a paper feeding roller 5 separating and conveying a sheet P loaded on a sheet loading means 8 at every one sheet and a retard roller 4 in the state that a rear end of the sheet P1 and a tip end of the sheet P2 are overlapped by a conveying means. When the overlapped portion of the sheet is approached to the abutting portion N of two rollers 4, 5, the prior sheet P1 and the subsequent sheet P2 are conveyed in the overlapped state by rotating the retard roller 4 with the paper feeding roller 5 together.

4. 发明专利

JP2000198554A SHEET FEEDER AND IMAGE FORMING DEVICE WITH SAME 失效
公开(公告)号：JP2000198554A
公开(公告)日：2000-07-18
申请号：JP149099
申请日：1999-01-06
申请人： CANON KK
发明人： TAMURA MASASHIGE
IPC分类号： B65H1/18 , B65H3/06 , B65H3/52 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To feed sheets at constant intervals by shortening intervals between sheets. SOLUTION: A sheet feeder 100 comprises a sheet stacking means 11 on which sheets S are stacked, a sheet feeding means 1 for contact-feeding the sheets S on the sheet stacking means 11, a sheet separating and feeding means 13 for separating and feeding the sheets S fed by the sheet feeding means 1, and a sheet detecting means 12 for detecting the height of the sheets S contact- fed by the sheet feeding means 1. The distance between the leading edge of the sheets S on the sheet stacking means 11 and the sheet separating and feeding means 13 is set practically equal to the distance between the trailing edge of the sheets S on the sheet stacking means 11 and the sheet feeding means 1. The sheet stacking means 11 is vertically movable so that height of the sheets S contact-fed by the sheet feeding means 1 which is detected by the sheet detecting means 12 is kept continuously constant.

5. 发明专利

JP2002046883A SHEET FEEDING DEVICE, PICTURE IMAGE FORMATION DEVICE FURNISHED WITH IT OR PICTURE IMAGE READING DEVICE 失效
公开(公告)号：JP2002046883A
公开(公告)日：2002-02-12
申请号：JP2000229414
申请日：2000-07-28
申请人： CANON KK
发明人： TAMURA MASASHIGE
IPC分类号： B65H3/52
摘要： PROBLEM TO BE SOLVED: To easily and precisely set overlapping quantity without spoiling an advantage of a sinking comb type feeding mechanism, to improve and stabilize separating performance of a sheet and to easily carry out maintenance work at the time of durable longevity, etc., in inexpensive constitution. SOLUTION: A sheet carrier means has a first rotating drive shaft 9 to be rotationally driven in a delivering direction and a plural number of carrier rollers 2 to be put on the first rotating drive shaft, a sheet separation means has a second rotating drive shaft 10 to be rotationally driven in the opposite direction of the delivering direction and a plural number of separation rollers 1 to be put on the second rotating drive shaft, each of the separation rollers 1a faces against a portion where each of the carrier rollers 2a is not arranged and is arranged to overlap with no contact against each of the carrier rollers 2a, it is formed of an elastic body of lower hardness than each of the carrier rollers 2a, and each of the carrier rollers 2a is applied with chamfering on both end sides of it.

6. 发明专利

JP2000085994A FEEDING DEVICE 失效
公开(公告)号：JP2000085994A
公开(公告)日：2000-03-28
申请号：JP25567398
申请日：1998-09-09
申请人： CANON KK
发明人： TAMURA MASASHIGE
IPC分类号： B65H3/06
摘要： PROBLEM TO BE SOLVED: To contribute to saving of resources by making it possible to exchange various kinds of rollers reaching their end of life by exchanging a paper feeding cartridge by supporting the various kinds of the rollers on the paper feeding cartridge free to connect and disconnect the various kinds of the rollers free to rotate repairing the useless paper feeding cartridge to be reusable by collecting it. SOLUTION: A paper feeding cartridge 1 supporting a pick-up roller 2p, a feed roller 2f and a retard roller 2r to carry sheets to an image forming part one by one by picking them up from a loading position is installed on an image forming device main body, and a positioning pin 5b and a latch 6 provided on this paper feeding cartridge 1 are engaged with a round hole, an oblong hole and an engagement hole of the image forming device main body. Consequently, a coupling 4b and a coupling 4a are connected to each other, driving force of a motor is transmitted to the pick-up roller 2p and the feed roller 2f, and a recording material is carried to the image forming part.

7. 发明专利

JP2002087624A SHEET MATERIAL SUPPLYING DEVICE AND IMAGE FORMING DEVICE EQUIPPED WITH THE SAME 失效
公开(公告)号：JP2002087624A
公开(公告)日：2002-03-27
申请号：JP2000279386
申请日：2000-09-14
申请人： CANON KK
发明人： TAMURA MASASHIGE
IPC分类号： B65H3/52
摘要： PROBLEM TO BE SOLVED: To provide a retard separation type sheet material supplying device capable of stably feeding sheet materials and realizing enhanced durability. SOLUTION: This sheet material supplying device is equipped with a retard separation mechanism 6 comprising a feed roller 8 rotating in the direction to feed the sheet materials P, a retard roller 9 rotating in the direction to return the sheet materials P, a retard roller support arm for bringing the retard roller 9 into pressure contact with the feed roller 8, and a torque limiter 15 idling and slipping if rotating torque larger than a prescribed value is transmitted to the retard roller 9. The feed roller 3 is a grooved roller having, on its surface, a plurality of striped ridges provided in a direction normal to the sheet material conveying direction. The retard roller 9 is a roller having a fibrous fiber layer whose outer circumferential surface is coated with a coat layer, which is impregnated into the fiber layer to cause fibers to project from the circumferential surface.

8. 发明专利

JP2001063869A SHEET CONVEYING DEVICE, IMAGE READER AND IMAGE FORMING DEVICE 失效
公开(公告)号：JP2001063869A
公开(公告)日：2001-03-13
申请号：JP23851599
申请日：1999-08-25
申请人： CANON KK
发明人： TAMURA MASASHIGE , SUGA TAKESHI
IPC分类号： B65H7/02 , B65H7/20
摘要： PROBLEM TO BE SOLVED: To provide a sheet conveying device of excellent reliability capable of positively detecting the conveyed state of each sheet even in the case of no clearance between the continuously conveyed sheets or in the overlapped state of the sheets, and to provide an image reader and an image forming device. SOLUTION: When a preceding sheet 4 conveyed in the direction of an arrow mark (b) by an oblique feed roller 2 arrives at a collision wall 3, the left edge is arranged to uniformly abut on the collision wall 3 by a slip roller effect to remove skew feed. At this time, a flag type sensor 1 installed in a stepped part area 150 formed between the preceding sheet 4 and a succeeding sheet 5 by the movement of the preceding sheet 4 in the direction of the arrow mark (b) is once turned off after the right end of the preceding sheet 4 passes through the sensor 1, so that the tip of the succeeding sheet 5 can be detected.

9. 发明专利

JP2000015892A SIDE APPLICATION APPARATUS 失效
公开(公告)号：JP2000015892A
公开(公告)日：2000-01-18
申请号：JP20119998
申请日：1998-07-01
申请人： CANON KK
发明人： TAMURA MASASHIGE
IPC分类号： B41J29/00 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To lessen a burden to an image formation apparatus main body and at the same time facilitate a positioning work for setting to the image formation apparatus main body. SOLUTION: A user makes a positioning pin 3 set at a large-capacity side deck 11 agree with a positioning pin engagement hole at a main body of a printer apparatus 12, and engages the large-capacity side deck 11 with the main body of the printer apparatus 12 by a latch mechanism 4 also installed at the large-capacity side deck 11. While confirming a setting adjustment index 2 at an upper part of the large-capacity side deck 11, the user turns a dial of an adjust mechanism of a caster 1 thereby adjusting to bring the adjustment index in a desired range.

10. 发明专利

JPH11292321A IMAGE PROCESSOR 失效
公开(公告)号：JPH11292321A
公开(公告)日：1999-10-26
申请号：JP10104198
申请日：1998-04-13
申请人： CANON KK
发明人： TAMURA MASASHIGE
IPC分类号： G03G15/00 , B65H1/08 , B65H1/26 , B65H3/00 , B65H3/06
摘要： PROBLEM TO BE SOLVED: To eliminate the necessity of respectively preparing a paper feeding unit in response to feed paper from the right side or feed paper from the left side by forming the driving part of a recording sheet carrying means in a shape noninterfering with a loading member regardless of the direction of a recording sheet. SOLUTION: A part of the driving part 1 of a paper feeding unit is cut out according to a cassette and a side deck to form the V-shaped cutout part 2. In the paper feeding unit, since the V-shaped cutout part 2 is formed in the driving part l, even if the driving part 1 is arranged in the front face part and the back face part of the cassette and the side deck, the paper feeding unit can be taken in and out without touching a housing magazine of a recording sheet of the cassette and the side deck, so that it does not become a handrance. According to this constitution, a paper feeding roller of the paper feeding unit can be set constant in the polishing texture direction, so that there is no need to prepare plural kinds of paper feeding units in response to the paper feeding cassette and the side deck.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式