专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明专利

JPS51141020A PRINTER 失效
公开(公告)号：JPS51141020A
公开(公告)日：1976-12-04
申请号：JP6474475
申请日：1975-05-29
申请人： CANON KK , CANON DENSHI KK
发明人： IDA RIYOUICHI , NARITA HITOSHI , OOKUBO KOUZOU , WATANABE SATOSHI
IPC分类号： H01F7/16 , B41J9/02 , B41J9/133 , B41J9/38 , H01F7/06

32. 发明专利

JPS51141019A HAMMER 失效
公开(公告)号：JPS51141019A
公开(公告)日：1976-12-04
申请号：JP6474375
申请日：1975-05-29
申请人： CANON KK , CANON DENSHI KK
发明人： IDA RIYOUICHI , NARITA HITOSHI , OOKUBO KOUZOU , WATANABE SATOSHI
IPC分类号： H01F7/16 , B41J9/02 , B41J9/38 , H01F7/06

33. 发明专利

JPS5714067A PRINTING DEVICE 失效
公开(公告)号：JPS5714067A
公开(公告)日：1982-01-25
申请号：JP8963680
申请日：1980-07-01
申请人： CANON KK , CANON DENSHI KK
发明人： OOKUBO KOUZOU , YOSHIDA HIROMI
IPC分类号： B41J7/34 , B41J7/48 , B41J11/18 , B41J11/62
摘要： PURPOSE:To provide a printing device capable of eliminating the chipping or nonuniformity of printed characters which would otherwise occur due to the chattering generated inevitably from the manufacturing process, by using a simple construction and without substantially increasing the load on a motor, by providing an elastic member which causes the shaft of a type wheel to deviate in the rotational direction in response to the movement of a platen. CONSTITUTION:In order to prevent the backward rotation of the shaft 201 for the type wheel due to the chattering, immediately before the platen 401 presses a type A against a printing paper PP, a stopping member 211 fixed to the shaft 201 is pushed by a pushing spring 4502 to cause the shaft 201 to deviate in the direction of forward rotation. Since only the elastic force of the spring 4502 is exerted immediately before printing,the load on the motor is increased very little.

34. 发明专利

JPS5714066A CHARACTER SELECTOR 失效
公开(公告)号：JPS5714066A
公开(公告)日：1982-01-25
申请号：JP8963580
申请日：1980-07-01
申请人： CANON KK , CANON DENSHI KK
发明人： OOKUBO KOUZOU , TANIGAWA ISAO
IPC分类号： B41J7/48
摘要： PURPOSE:To eliminate the spring-back phenomenon arising from the kinetic energy of a type selecting lever and enhance the reliability of a type selecting mechanism by a method wherein a member for absorbing the kinetic energy of a type selecting lever is placed in correspondence with the type selecting lever for each place. CONSTITUTION:Immediately before the type selecting lever 208 is contacted with a type wheel 202, a rear part of the lever 208 is contacted to an energy absorbing piece 240 made of a metal. Accoreingly, the piece 240 absorbs the kinetic energy of the lever 208, moves upward in a hole 2411 of a guide block 241, collides with a shock absorbing member 243 and falls under its own weight.

35. 发明专利

JPS5634490A PAPER FEEDING MECHANISM OF PRINTER 失效
公开(公告)号：JPS5634490A
公开(公告)日：1981-04-06
申请号：JP11048179
申请日：1979-08-31
申请人： CANON KK , CANON DENSHI KK
发明人： NISHIKAWA TATSUO , OOKUBO KOUZOU , YOSHIDA HIROMI , HASEGAWA YUUICHI , KOBATA YOSHIHIRO
IPC分类号： B41J19/78 , B41J19/82
摘要： PURPOSE:To obviate, in a printer, overlap of printed lines of signs or letters, by making the pitch of pawls of a ratchet wheel that feeds a predetermined length of paper by the rotation of a predetermined angle finer than the pitch required for feeding the paper. CONSTITUTION:In a printer that is used as an operation result recorder of a recording type electronic calculator, a predetermined length of paper is delivered by rotation of a predetermined angle of a ratchet wheel 410 that is cooperated with a pawl member 416 engaged therewith. The pitch of pawls of the ratchet wheel 410 is made finer than the pitch required for delivering the predetermined length of paper. For example, when the space between the pawls on the circumference of the ratchet wheel 410 is halved, that is, the number of the pawls is doubled, and if the engaged positional relationship of the ratchet wheel 410 with the pawl member 416 is missed a line and the next line not overlap and in the worst case, while the lower edges of letters in a line will be in slightly touch with upper edges of letters in the next line, so that the letters will be easily become readable.

36. 发明专利

JPS5634484A PAPER FEEDING MECHANISM OF PRINTER 失效
公开(公告)号：JPS5634484A
公开(公告)日：1981-04-06
申请号：JP11048779
申请日：1979-08-31
申请人： CANON KK , CANON DENSHI KK
发明人： NISHIKAWA TATSUO , OOKUBO KOUZOU , YOSHIDA HIROMI , HASEGAWA YUUICHI , KOBATA YOSHIHIRO
IPC分类号： B41J13/02 , B41J13/076
摘要： PURPOSE:To permit smooth paper feeding with a simple mechanism, by making a friction coefficient between a printing paper and a pressing member for pressing the printing paper against a paper feeding roller smaller than a friction coefficient between the paper feeding roller and the printing paper. CONSTITUTION:The length of printing paper PP is inserted through a paper inlet 4022, is guided to a traverse plate 404-1 and a platen holder 407, then is guided between the platen holder 407 and a platen 401 and a smear prevention plate 417-1 and leaf springs 430, and then is introduced between the leaf springs 430 and rubber rollers 406 against which the leaf springs 430 are acting. After being printed, the printing paper will be fed in a direction shown by an arrow along with the rotation of the rubber rollers 406 with it being pressed against the rubber rollers 406 by the leaf springs 430. In this case, the material of the rubber rollers 406 and leaf springs 430 are selected such that the relation of a friction coefficient mu1 between the printing paper PP and the rubber roller 406 with a friction coefficient mu2 between the printing paper PP and the leaf spring 430 is mu1>mu2. Thus excellent paper feeding can be performed.

37. 发明专利

JPS5634481A PRINTER 失效
公开(公告)号：JPS5634481A
公开(公告)日：1981-04-06
申请号：JP11048379
申请日：1979-08-31
申请人： CANON KK , CANON DENSHI KK
发明人： NISHIKAWA TATSUO , OOKUBO KOUZOU , YOSHIDA HIROMI , HASEGAWA YUUICHI , KOBATA YOSHIHIRO
IPC分类号： B41J29/38 , B41J11/18 , B41J19/78
摘要： PURPOSE:To prevent the wear of driving cams and pins and to effect smooth operation to maintain high quality printing, by making the pins, on a printing paper feeding mechanism, to be engaged with the driving cams from plastic rotating pins in the form of rollers. CONSTITUTION:When the printer has started its operation, platen cams 114, 113, 133 are rotated in a direction shown by an arrow (a) by rotation of a cam shaft 103. When these platen cams has made about half a rotation, collars 4092, 4192 are urged by projections 1131, 1331 on the cams 113, 133 and a roller 408 drops into notches of the cams 114, 113, so that a platen lever 403 is swung about a shaft 402 toward a printing type wheel group 202. When the lever 403 has swung to the maximum, the printing paper PP is pressed by a platen 401 against selected printing types in front of the platen to carry out the printing. In order to reduce the wear of cam projections 1131, 1331 the material of the collars 4092, 4192 is made of a plastic material.

38. 发明专利

JPS5634480A PAPER FEEDING MECHANISM FOR PRINTER 失效
公开(公告)号：JPS5634480A
公开(公告)日：1981-04-06
申请号：JP11048079
申请日：1979-08-31
申请人： CANON KK , CANON DENSHI KK
发明人： NISHIKAWA TATSUO , OOKUBO KOUZOU , YOSHIDA HIROMI , HASEGAWA YUUICHI , KOBATA YOSHIHIRO
IPC分类号： B41J29/38 , B41J11/18 , B41J19/78
摘要： PURPOSE:To obtain high quality prints with their pitches between the lines neatly arranged, by rotating a paper feeding roller to feed a length of paper corresponding to a line during the return movement step of a platen, and by providing a roller reverse rotation preventing means which is mounted on a paper feeding mechanism to act during the forward movement step of the platen. CONSTITUTION:When a particular printing type is opposed to a platen 401 by rotation of a printing type wheel 202, an electric current is passed through coils 2161, 2162, magnetic fluxes of yoke comb teeth 2143, 2144 supporting an armature 213 are cut, and a printing type wheel selecting lever 208 is swung around an axis 212 clockwise by a spring force of a leaf spring 217 to cause a click 2081 to engage with a tooth B on a side surface of the printing type wheel 202. Thus the rotation of the printing type wheel 202 is stopped with the particular printing type portion on its outer periphery opposed to the platen 401. Printing is carried out by displacing the platen 401 toward thus arranged printing types, and when the platen 401 starts to return to its waiting position, the leaf springs are moved to swing the printing type wheel levers 208, so that the printing type wheel levers 208 for a particular line are reset to their original positions.

39. 发明专利

JPS5634478A ELECTROMAGNETIC DEVICE 失效
公开(公告)号：JPS5634478A
公开(公告)日：1981-04-06
申请号：JP11049279
申请日：1979-08-31
申请人： CANON KK , CANON DENSHI KK
发明人： ASAKURA OSAMU , OOKUBO KOUZOU , HASEGAWA YUUICHI , MIYAGAWA HIDEAKI
IPC分类号： H01F7/04 , B41J7/48 , B41J9/44 , H01F7/06
摘要： PURPOSE:To provide a compact printer of low power consumption and high reliability, by providing coils on portions of magnetic flux conducting N-pole and S- pole so that magnetic fluxes which relate to type selection and which are conducted through yokes at the time of electricity feed are reduced. CONSTITUTION:When a printing signal is applied, a motor 101 starts rotating to revolve a type wheel shaft 201 in a forward direction P through gears 104-107, 110, 203. At that time, type wheels 202 for digits are revolved together with the shaft 201 in the same direction P. When a desired-character type on the peripheral surface of the type wheel 202 is revolved to a position opposed to a platen 401, electric energy is supplied to required one of coils 216 for a short time so that the magnetic attractive forces between an armature 213 and yoke's comb teeth 2143, 2144 at the digit are eliminated, a selection claw 208 is revolved toward the type wheel shaft 201 centering a shaft 212 and the rotation of the type wheel 202 is stopped. The to-be-printed type is therby selectively located in front of the platen 401.

40. 发明专利

JPS5634471A CHARACTER SELECTION TRIGGER DEVICE FOR PRINTER 失效
公开(公告)号：JPS5634471A
公开(公告)日：1981-04-06
申请号：JP11047279
申请日：1979-08-31
申请人： CANON KK , CANON DENSHI KK
发明人： NISHIKAWA TATSUO , OOKUBO KOUZOU , YOSHIDA HIROMI , HASEGAWA YUUICHI , KOBATA YOSHIHIRO
IPC分类号： B41J7/48
摘要： PURPOSE:To ensure the waiting status of digit type selection levers and make a device stable and compact, by providing armatures for the digit character selection levers and providing a magnet between two yokes to form magnetic circuits. CONSTITUTION:When a device is put in a character selection period and a type wheel shaft 201 starts rotating in a forward direction P, type wheel selection levers 208 for all digits are energized in the direction of an arrow (a) by leaf springs 217 centering a shaft 212 but armatues 213 are attracted and held on the comb teeth 2143, 2144 of magnetized yokes 2141, 2142. Type wheels 202 are synchronously rotated in the forward direction P together with the shaft 201 through ratchets 209. When an objective type is opposed to a platen 401, coils 2161, 2162 are supplied with electric energy and the magnetic flux of the yoke comb teeth 2143, 2144 retaining the armatures 213 are cut off so that the type wheel selection levers 208 swing and pawls 2081 are engaged with teeth B on the sides of the type wheels 202.

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