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51. 发明专利

JP2902689B2 失效
公开(公告)号：JP2902689B2
公开(公告)日：1999-06-07
申请号：JP29427189
申请日：1989-11-13
申请人： RIKOO KK
发明人： TAKAHASHI HIROSHI , YANAGISAWA TAKAAKI
IPC分类号： B41J29/40 , B41J11/20 , B41M5/382 , G03B27/62 , G03G15/00 , G03G15/22 , G06F3/12

52. 发明专利

JPH1178139A THERMAL RECORDER 失效
公开(公告)号：JPH1178139A
公开(公告)日：1999-03-23
申请号：JP26506797
申请日：1997-09-11
申请人： RICOH ELEMEX CORP
发明人： NISHIO TATSUO
IPC分类号： B41J11/20 , B41J2/32 , B41J25/304
摘要： PROBLEM TO BE SOLVED: To obtain a thermal recorder in which the image quality is prevented from degrading due to noise or vibration being generated when one of a platen or a thermal head is pressed against the other using a resilient member. SOLUTION: An arm 43 supporting a platen roller 30 on the underside of a thermal head 25 is disposed rotatably. An elliptical cam 40 is fixed to the motor shaft 39a of a stepping motor 39 beneath the supporting arm 43 and a lever 45 is mounted rotatably on the elliptical cam 40. A compression spring (resilient member) 50 is interposed between the lever 45 and the supporting arm 43.

53. 发明专利

JPH1110969A PRINT GAP CONTROLLER FOR PRINTER 失效
公开(公告)号：JPH1110969A
公开(公告)日：1999-01-19
申请号：JP16410397
申请日：1997-06-20
申请人： HITACHI KOKI KK
发明人： SUZUKI TOSHIYUKI , HIKI TOSHIO , YAGETA KOICHI , IWAMA MASAMI
IPC分类号： B41J11/20 , B41J9/00
摘要： PROBLEM TO BE SOLVED: To minimize deterioration of print quality due to heat generated through print operation by detecting fluctuation in the print gap between a print hammer and a platen and shifting at least one of the platen and a hammer bank thereby adjusting the print gap between them. SOLUTION: After power is turned on, a timer circuit 6 is actuated and a counter 4 and a platen position memory circuit 9 are reset. A print data is delivered from a print control means 1 to a counter 4 for counting the number of driving times of a print hammer within a specified time designated by the timer circuit 6. When a comparator 5 detects the counted number of driving times reaching a specified value within a specified time designated by the timer 6, a signal is delivered to a platen position control circuit 8 and a retracting amount of a platen 11 is designated to a platen position memory circuit 9. A platen drive circuit 10 retracts the platen 11 according to a command from the platen position memory circuit 9.

54. 实用新型

JP2582078Y2 失效
公开(公告)号：JP2582078Y2
公开(公告)日：1998-09-30
申请号：JP5815891
申请日：1991-07-24
IPC分类号： B41J11/20

55. 发明专利

JP2791350B2 失效
公开(公告)号：JP2791350B2
公开(公告)日：1998-08-27
申请号：JP845394
申请日：1994-01-28
申请人： SEIKOO PURESHIJON KK
发明人： HARADA HIROYUKI
IPC分类号： B41J11/14 , B41F1/06 , B41J11/20

56. 发明专利

JP2784013B2 失效
公开(公告)号：JP2784013B2
公开(公告)日：1998-08-06
申请号：JP26126488
申请日：1988-10-17
申请人： HYUURETSUTO PATSUKAADO CO
发明人： SUTEIIBU OO RASUMUSEN , RARII EI JAKUSON , DEIBITSUDO DABURYUU PINKANERU
IPC分类号： B41J15/04 , B41J2/01 , B41J11/00 , B41J11/20 , B41J13/10 , B41J13/28 , B41J25/304 , B41J25/34 , G06K15/10
摘要： Several problems of alignment associated with ink-jet printers are alleviated by four aspects. In the first, a reverse bow (atB ) in the paper (12) is created for printing on single sheets of paper. The reverse bow (atB), which is in the transverse axis of the paper (12), forces the paper flat against the platen (14) by using the paper's own stiffness. In the second aspect, the paper (12) and the carriage (30) are referenced to the same part (the carriage guide (10)). In this configuration, the paper (12) is urged against the underside of the carriage guide (10) off of drive rollers (18), through the reverse bow, and onto the platen (14), where it is printed. The carriage (30) is referenced to the carriage guide (10) through a slider bump by means of a carriage shaft and gravity. The carriage guide (10) comprises stiff thin sheet metal, which is closely-toleranced and has well-controlled dimensions. Thus, this part is good to reference to, rather than molded-in parts, which are not stiff enough at the required thickness. Straightness is also difficult to achieve at the required thickness with plastic parts. In the third aspect, the platen (14) is allowed to move substantially perpendicular to the plane of the paper (12) to accommodate thicker print media. In the fourth aspect, the platen (14) is maintained a minimum fixed distance from the carriage guide (10) by bumps (38) to ensure that the paper (12) is not pinched between the carriage guide (10) and the platen (14).

57. 发明专利

JPH10157223A PRINTER 失效
公开(公告)号：JPH10157223A
公开(公告)日：1998-06-16
申请号：JP32018396
申请日：1996-11-29
申请人： TEC CORP
发明人： MOCHIDA SADAYOSHI
IPC分类号： B41J11/20
摘要： PROBLEM TO BE SOLVED: To correctly position each platen not only in a direction to come close to and away from a printing head but also in an axial direction, by setting the printing head to face the platens supported by confronting side plates, and supporting a positioning shaft for the platens in the vicinity of the platens to penetrate the side plates. SOLUTION: Two platens 2L, 2R are axially supported in one line by two confronting side plates 1. A positioning shaft 12 for the platens 2L, 2R penetrates circular through holes 11 formed in each side plate 1 in the vicinity of the platens 2L, 2R so that the positioning shaft 12 is supported by the through holes. The positioning shaft 12 is set to as to correctly position the platens 2L, 2R in a direction to come close to and away from a thermal head 4 and in an axial direction. Moreover, while a head-supporting body 5 held rotatably to both side plates 1 is closed, a notch 18 of a bent element 19 is engaged with a pin which can be easily determined in relative position to the platens 2L, 2R on the side plates 1, thereby positioning an arrangement line of heat- generating elements of the thermal head 4.

58. 发明专利

JP2752660B2 失效
公开(公告)号：JP2752660B2
公开(公告)日：1998-05-18
申请号：JP26864688
申请日：1988-10-24
申请人： NIPPON DENKI KK , KOFU NIPPON DENKI KK
发明人： NIREKI TAKAO , OCHIAI JUJI
IPC分类号： B41J25/308 , B41J11/20 , B41J25/316 , G06K15/16

59. 发明专利

JP2742197B2 失效
公开(公告)号：JP2742197B2
公开(公告)日：1998-04-22
申请号：JP21317093
申请日：1993-08-27
IPC分类号： B41J2/32 , B41J2/325 , B41J11/04 , B41J11/20 , B41J25/308 , B41J25/312 , G07B17/00

60. 发明专利

JPH1081045A IMAGING AND PRINTING DEVICE USING SERIAL HEAD 失效
公开(公告)号：JPH1081045A
公开(公告)日：1998-03-31
申请号：JP23789196
申请日：1996-09-09
申请人： SANYO ELECTRIC CO
发明人： HIBINO SEIJI
IPC分类号： B41J11/02 , B41J2/32 , B41J11/20 , B41J19/20
摘要： PROBLEM TO BE SOLVED: To provide an imaging and printing device using serial head wherein a difference in contact pressure of the serial head to a platy platen can be lessened by a simple structure. SOLUTION: The imaging and printing device is equipped with a platy platen 12 arranged long in a main scan direction of a serial head 14, and a platen base 25 on which the platy platen 12 is placed. In this case, a platen stay 12a constituting a rear face side of the platy platen 12 is formed in a semicircular cylindrical form being a form corresponding to a part of a circle by being seen from the main scan direction, and a semicircular recessed groove 25a corresponding to the semicicular cylindrical form is formed on the platen base 25. The platy platen 12 is, in a freely pivotal manner, supported by bringing the semicicular curved face of the semicircular cylindrical form in slide contact with the semicicular curved face of the semicircular recessed groove 25a.

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