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1. 发明专利

JP2006347710A RECORDING MEDIUM CONVEYING DEVICE, TRANSFER DEVICE, AND IMAGE FORMING DEVICE 审中-公开
公开(公告)号：JP2006347710A
公开(公告)日：2006-12-28
申请号：JP2005176642
申请日：2005-06-16
申请人： RICOH KK
发明人： SETO TAKASHI , WATANABE TETSUO , MASUBUCHI FUMITO , MIYAWAKI KATSUAKI , KOMATSU MAKOTO
IPC分类号： B65H5/06 , B65H9/14 , G03G15/00 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a recording medium conveying device for enabling forming of a high-quality recorded image by preventing occurrence of positioning error, pre-transfer, and transfer scattering, and suppressing a working force of a rapid load fluctuation occurring at a position of a pair of rollers at the time of a tip end or a rear end of a conveyed recording medium plunging or at the time of pulling out, and a transfer device equipped with the same, and an image forming device. SOLUTION: The recording medium conveyance device is equipped with a pair of conveyance rollers 1 closest to the pair of rollers, provided at the upstream side of where the recording medium P is conveyed, a conveyance roller unit 2 for holding the pair of conveyance rollers 1 integrally, and a retreating means 3 for the pair of conveyance rollers for retreatably holding the conveyance roller unit 2 in the opposite direction from the conveyance direction X of the recording medium P. COPYRIGHT: (C)2007,JPO&INPIT

2. 发明专利

JP2002307705A INK CARTRIDGE INTEGRATED WITH WASTE INK BAG 失效
公开(公告)号：JP2002307705A
公开(公告)日：2002-10-23
申请号：JP2001116400
申请日：2001-04-16
申请人： RICOH KK
发明人： MURANAKA MASAICHI , WATANABE TETSUO
IPC分类号： B41J2/175
摘要： PROBLEM TO BE SOLVED: To prevent the size of an ink cartridge from increasing by providing a waste ink bag integrally with an ink bag in a cartridge case, not a waste ink absorber, thereby utilizing the unused space in the cartridge case effectively. SOLUTION: The ink cartridge 1 integrated with a waste ink bag comprises a flexible ink bag 2, a flexible waste ink bag 4, and a cartridge case 6 wherein the ink bag 2 and the waste ink bag 4 are contained in the same cartridge case 6 continuously to each other. The ink bag 2 has an ink supply opening 3 at one end part thereof and an ink receiving opening 5 at one end part of the waste ink bag 4 wherein the ink receiving opening 5 of the waste ink bag 4 is located at a position lower than the ink supply opening 3 of the ink bag 2.

3. 发明专利

JP2002205841A SEPARATING FEEDER AND IMAGE FORMING DEVICE 失效
公开(公告)号：JP2002205841A
公开(公告)日：2002-07-23
申请号：JP2001002296
申请日：2001-01-10
申请人： RICOH KK
发明人： IIJIMA TAKESHI , WATANABE TETSUO , HOSHINO SEIJI , KAKEFU SADAO
IPC分类号： G03G15/00 , B65H3/52
摘要： PROBLEM TO BE SOLVED: To prevent an uneven contact state between a feed roller and a return roller, and prevent a paper skew caused by such uneven contact and a paper jam caused by the skew. SOLUTION: In a feed reverse roller(FRR) system separating feeder having the feed roller and the return roller 27, either of the feed roller and the return roller 27 has a swing roller body part 35 swingable with respect to an axially rotatable rotary shaft part 31 and rotatable along with the rotary shaft part 31. If the feed roller and the return roller 27, which are supposed to be disposed parallel, are disposed eccentrically, the swing roller body part 35 swings with respect to the rotary shaft part 31, and the swing brings the periphery of the feed roller and the periphery of the return roller 27 into even contact throughout the axes of the feed roller and return roller 27 to prevent uneven contact.

4. 发明专利

JP2002189395A CLEANER 失效
公开(公告)号：JP2002189395A
公开(公告)日：2002-07-05
申请号：JP2000386920
申请日：2000-12-20
申请人： RICOH KK
发明人： WATANABE TETSUO
IPC分类号： G03G21/10
摘要： PROBLEM TO BE SOLVED: To provide a cleaner that surely recovers waste toner by facilitating the removal of the waste toner on a photoreceptor. SOLUTION: The cleaner 10 that removes residual toner on the photoreceptor 1 after transfer in an electrophotographic process has a means 23 for cancelling the polarity of the residual toner and a means 29 for sucking toner whose polarity is cancelled, both means being located downstream in a transfer process on the photoreceptor 1, and the means that cancels the polarity is an ionizer.

5. 发明专利

JP2002187636A PAPER SHEET SEPARATING/FEEDING DEVICE AND IMAGE FORMING APPARATUS 失效
公开(公告)号：JP2002187636A
公开(公告)日：2002-07-02
申请号：JP2000387630
申请日：2000-12-20
申请人： RICOH KK
发明人： WATANABE TETSUO , HOSHINO SEIJI , IIJIMA TAKESHI
IPC分类号： B65H3/52
摘要： PROBLEM TO BE SOLVED: To improve paper sheet separating/feeding performance to prevent feeding failure of a sheet or overlap feed of sheets, and to prevent damaging of the sheet at a time of separating and feeding the sheet. SOLUTION: A carrier roller 26 is rotatably driven in a paper feeding direction while piercing a sheet S by carrier roller protrusions 37, so as to surely feed a sheet S. A returning roller 27 is rotatably driven in a paper returning direction while piercing a sheet S by returning roller protrusions 42, so as to surely return a sheet S. The maximum sticking depth 'T2', that is a degree of sticking of the carrier roller protrusions 37 in a sheet S, and the maximum sticking depth 'T3', that is a degree of sticking of the returning roller protrusions 42 in the sheet S, are set to be less than the thickness 'T1' of a bundle of sheet S that are the thinnest sheet of paper to be fed by the paper separating/feeding device. When sticking the carrier roller protrusions 37 or the returning roller protrusions 42 in the sheets S, the protrusions do not penetrate deeply into a sheet S and do not heavily damage the sheet S, and the protrusions do not penetrate into a plurality of sheets S.

6. 发明专利

JP2001158088A INK-JET HEAD, CARRIAGE, AND INK-JET PRINTING APPARATUS 失效
公开(公告)号：JP2001158088A
公开(公告)日：2001-06-12
申请号：JP34412299
申请日：1999-12-03
申请人： RICOH KK
发明人： WATANABE TETSUO , SETO TAKASHI , KIMURA TAKASHI , TAKEMOTO TAKESHI
IPC分类号： B41J2/01 , B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To simply replace a head on a user's level and highly accurately obtain a setting position accuracy for nozzles when the head is set to a carriage. SOLUTION: The head 1 is constituted of an outer cover 2, an inner cover 3, a head structure 4 and a face plate 5. The head 1 is formed of a small number of constituent parts. The face plate 5 is provided with a positioning reference face to be used when the head is set to the carriage 30, so that a nozzle array of the head 1 is accurately positioned to the carriage 30.

7. 发明专利

JP2000173238A OPTICAL DISK DEVICE AND OPTICAL DISK 失效
公开(公告)号：JP2000173238A
公开(公告)日：2000-06-23
申请号：JP34596898
申请日：1998-12-04
申请人： RICOH KK
发明人： AIHARA KENICHI , HOTTA YOSHIHIKO , WATANABE TETSUO
IPC分类号： G11B23/38 , G11B7/00 , G11B7/004 , G11B7/0055 , G11B7/24
摘要： PROBLEM TO BE SOLVED: To make it possible to rewrite and record prescribed visible information any times on the label surface of an optical disk and to form the label surface in such a manner that the rewriting and recording position of the visible information on the label surface is in an adequate position. SOLUTION: The optical disk device 1 is constituted by previously adding the label 3 consisting of a thermally reversible recording medium which attains a first state when heated to a first temperature and attains a second state different from the first state when heated to a second temperature to the optical disk 1 and records the prescribed visible information by heating the label to the first temperature with a recording section 21 (recording and erasing head). At this time, the direction of the optical disk 1 mounted in a mounting section 12 (disk tray (a)) is aligned to the prescribed direction by utilizing a mark 3a disposed at the optical disk 1, by which the recording position of the visible information with respect to the label 3 is brought to the adequate position. The recorded visible information, which is seconded by heating to the second temperature with the erasing section 21 (recording and erasing head), is erased.

8. 发明专利

JPH11170646A PRINTER 失效
公开(公告)号：JPH11170646A
公开(公告)日：1999-06-29
申请号：JP36417197
申请日：1997-12-16
申请人： RICOH KK
发明人： WATANABE TETSUO
IPC分类号： B41J17/00 , B41J17/24 , B41J17/32 , B41J17/38
摘要： PROBLEM TO BE SOLVED: To provide a printer that allows a lead tape of an ink sheet at a supplying shaft side to be bonded with a lead tape at a winding shaft side. SOLUTION: An ink sheet having a lead tape 2 at an end thereof is wound in an ink sheet cassette 1. The cassette 1 is set to a winding shaft 6. A rotating force of a motor 8 is exerted on the winding shaft 6. A lead tape 10 of which one end is fixed and the other end is extended to a portion in the vicinity of the outlet of the cassette 1 is attached to the winding shaft 9. An end of the lead tape 10 is allowed to stay at a portion of a lead tape pressing arm 16 for waiting the lead tape 2 to be fed out, then the lead tape 2 is fed out thereto. As each of the lead tapes 2, 10 has a bonding structure, they are bonded with each other. When the winding shaft 9 is rotated by virtue of the driving force of a motor 13, the bonding is completed and the winding is executed, then printing is performed. When the printing is completed, rewinding is executed so that the bonded portion is separated. The ink sheet is rewound in the cassette 1.

9. 发明专利

JPH09314931A PRINTING SCANNING MECHANISM FOR PAPER 失效
公开(公告)号：JPH09314931A
公开(公告)日：1997-12-09
申请号：JP15171496
申请日：1996-05-23
申请人： RICOH KK
发明人： WATANABE TETSUO
IPC分类号： B41J11/02
摘要： PROBLEM TO BE SOLVED: To provide a printing mechanism with minimum printing margins. SOLUTION: An image receiving sheet 12 to be printed is fed from the left side in the figure, and moved forward on an endless belt 21 until it is sensed by a sensor 11. (At that time, a thermal head 6 is in the released state). The start of paper feeding is carried out by the slight pressure welding pressure of a paper feed pressure welding roller 17. The paper feed pressure welding roller 17 is an easily deformable material such as a foaming material or the like, and 17' in the figure is set as a rotatable fixed support. When the paper 12 is moved to a pressure welding component 19, the movement of the paper 12 is carried out dominatively by the moving force formed by multiplying the pressure welding force between the paper and a supporting component 31 by the friction coefficient between the paper 12 and the endless belt 21. The pressure welding force is determined by a tension spring 20. The circumference of a grip roller for moving the paper 12 heretofore available is replaced by the belt 21 to form a plane, and the pressure welding component 19 using a small diameter roller is provided in the vicinity of a heater of a head to reduce the printing margins to L'.

10. 发明专利

JPH09300829A MOUNT PAPER FOR RETAINING IMAGE RECEIVING MATERIAL 失效
公开(公告)号：JPH09300829A
公开(公告)日：1997-11-25
申请号：JP13956996
申请日：1996-05-09
申请人： RICOH KK
发明人： WATANABE TETSUO
IPC分类号： B41J13/10 , B41M5/382 , B41M5/50 , B41M5/52 , B41M5/38
摘要： PROBLEM TO BE SOLVED: To carry out the printing on an image receiving body without non- printing areas which is not available by conventional printers by forming a bonding agent layer on which the image receiving body can be stuck and released therefrom on a site on a base where at least the image receiving body of the base is stuck. SOLUTION: A printing card as an image receiving body is stuck on a mount paper for printing the image receiving body and printing is carried out by a printer, and as a base 19 of the mount paper for retaining the image receiving body, a synthetic paper of thickness of approximately 0.2-0.3mm is used usually, and a bonding agent layer 18 is formed on the base, on the upper of which a protective film 27 for protecting the bonding agent layer 18 and to be released off the bonding layer 18 at the time of printing is formed. A recessed section formed into the shape in which the card can be inserted is formed on the mount paper base 19 for retaining the image receiving body of the mount paper, and the bonding agent layer 18 can be constituted in the shape of being fitted in the recessed section. The depth of the recessed section is preferably of the size in which the upper face of the card is slightly higher than the upper face of the mount paper when the card is fitted in.

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