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31. 发明专利

JPH0758722A CONTROL SYSTEM AND CONTROL CIRCUIT 失效
公开(公告)号：JPH0758722A
公开(公告)日：1995-03-03
申请号：JP19867293
申请日：1993-08-10
申请人： FUJITSU ISOTEC LTD
发明人： NAKAMURA YUKIO
IPC分类号： G05B15/02 , H04J7/00
摘要： PURPOSE:To perform the desired control of a control system and a control circuit with less control signals by controlling different systems by using the same signal line. CONSTITUTION:A control signal outputted from a port 17 is connected to a pin 20a of a connector and set to a low or high potential by a CPU 14. On a substrate 11, a control signal inputted to a pin 32a of a connector 32 is connected to the input of an inverter 21 and when this control signal is set to a high potential, an LED 25 illuminates, but when the signal is set to a low potential, the LED 25 goes out. A control signal outputted to a pin 32b of the connector 32, on the other hand, becomes the temperature detection signal of a thermistor R28 when the control signal inputted from the pin 32a is set to the low potential or the temperature detection signal of a thermistor R30 when the signal is set to the high potential. Namely, the control signal which controls the illumination state of the LED 25 and the control signal which specifies one of the thermistors R28 and R30 are sent by using the same signal line.

32. 发明专利

JPH0732710A INK RIBBON CASSETTE 失效
公开(公告)号：JPH0732710A
公开(公告)日：1995-02-03
申请号：JP17824593
申请日：1993-07-19
申请人： FUJITSU ISOTEC LTD
发明人： KAMIMURA HISASHI , SUGIE MASARU , KUBOTA MASAYUKI , AKUTSU JUNJI , SATOU MINAKO
IPC分类号： B41J32/02 , B41J33/24 , B41J33/26 , B41J35/28
摘要： PURPOSE:To make it impossible for the user to mount an ink ribbon cassette of an impact printer on a carriage of the printer when leaving the endless ink ribbon in a non-movable condition and to reduce the printing shock in a connection part of the endless ink ribbon as much as possible. CONSTITUTION:Either ribbon transporting roller 32 or a pressure roller 34 that transport an endless ink ribbon can be varied in its position against the other for simplifying the exchanging of the ink ribbon and can be locked at a shunting position. When one of the rollers is locked at the shunting position, the mounting of the ink ribbon cassette in a printer is blocked. The transporting direction and the direction thereof are restricted so that damage of a welding portion of the endless ink ribbon is delayed as much as possible.

33. 发明专利

JPH06270423A PRINTING HEAD 失效
公开(公告)号：JPH06270423A
公开(公告)日：1994-09-27
申请号：JP5989193
申请日：1993-03-19
申请人： FUJITSU LTD , FUJITSU ISOTEC LTD
发明人： YOSHIDA MITSUHIRO , SEKINE SHIGEO
IPC分类号： B41J2/235 , B41J2/275 , B41J29/08
摘要： PURPOSE:To provide a suction type printing head having a rubber damper positioning an armature at a time of non-printing and capable of correcting the extension and contraction due to a temp. change of the damper. CONSTITUTION:In a suction type printing head equipped with a rubber damper 4 and the auxiliary damper superposed on the damper 4 and engaging an armature with the damper 4 at a time of non-printing to position the same, the auxiliary damper is constituted of a piezoelectric element 13 displaced in its thickness direction and the piezoelectric element 13 is extended and contracted corresponding to the temp. change of the circumference to absorb the thickness change of the damper 4 due to the temp. change.

34. 发明专利

JPH06255187A PRINTER APPARATUS WITH CORRECTING DEVICE OF TRANSFERRING ABNORMALITY 失效
公开(公告)号：JPH06255187A
公开(公告)日：1994-09-13
申请号：JP4421893
申请日：1993-03-05
申请人： FUJITSU ISOTEC LTD
发明人： ENAMI HIROYUKI
IPC分类号： B41J11/42 , B41J15/04 , B41J29/48 , B65H43/04 , G06F3/12
摘要： PURPOSE:To prevent transferring abnormality by monitoring the state of a transferring opening of a continuous form passing a continuous form transferring device by means of a sensor and correcting the transferring abnormality in accordance with the detecting result in a printer apparatus which is adapted to print the continuous form. CONSTITUTION:A printer using continuous forms is provided with a continuous form transferring device TR which consists of a continuous form transferring belt 1 having a projection to be engaged with a transferring opening of a continuous form P and a wheel 2 for rotating the transferring belt 1. The transferring opening of the continuous form P is engaged with the projection of the transferring belt 1 by a retainer plate 3. A pair of sensors 5 are provided at both sides of the transferring belt 1 to detect the abnormality, for example, the positional misalignment of the transferring opening of the continuous form P, the relative positional displacement or the like. A transfer abnormality correcting device 6 is set corresponding to each sensor 5. When the sensors 5 detect that the transferring abnormality tends to occur, the transfer abnormality correcting device 6 are activated to help press and forward the continuous form P by respective auxiliary transfer rollers 6R of the devices 6. Accordingly, the transferring abnormality is corrected.

35. 发明专利

JPH06255135A CONTROL DEVICE FOR DRIVING OF PRINTING HEAD 失效
公开(公告)号：JPH06255135A
公开(公告)日：1994-09-13
申请号：JP4709893
申请日：1993-03-09
申请人： FUJITSU LTD , FUJITSU ISOTEC LTD
发明人： YOSHIDA MITSUHIRO , KON SHINJI , YAMAKI SHUICHI
IPC分类号： B41J2/30
摘要： PURPOSE:To prevent the printing of the excessive dot accompanied by the increase of a printing speed by providing a means forming a control signal gradually extending the charge time of a piezoelectric element as becoming a dot to be printed. CONSTITUTION:A printing head 20 is driven by a drive means 12 corresponding to the control signal from a control signal forming means 11 forming the control signal gradually extending the charge time of a piezoelectric element 30 as becoming a dot to be printed later. By this constitution, kinetic energy allowing a printing pin 35 to strike printing paper to be ready to return is gradually reduced in respective processes from the predetermined dot in a continuous dot row to the final dot therein. Therefore, even when the charge time applied to the piezoelectric element 30 at a time of the printing of the final dot accompanied by the increase of a printing speed is not taken sufficiently long, the kinetic energy preserved in the printing pin 35 at the time of the printing of the final dot has been reduced and, by applying a predetermined charge time/discharge time, the sufficient control of the printing pin 35 becomes possible.

36. 发明专利

JPH06218949A WIRE DOT PRINTING HEAD 失效
公开(公告)号：JPH06218949A
公开(公告)日：1994-08-09
申请号：JP1214493
申请日：1993-01-28
申请人： FUJITSU LTD , FUJITSU ISOTEC LTD
发明人： YAMAKI SHUICHI , KITSUNAI HISAAKI
IPC分类号： B41J2/235
摘要： PURPOSE:To provide the wire dot printing head of a printer capable of markedly reducing the falling of a slit at the time of the production of a movable member. CONSTITUTION:A wire dot printing head is equipped with a movable member equipped with an armature 21 and the beam 22 fitted in and clamped to the slit 23 provided to the end part of the armature 21 having a wire provided to the leading end thereof. The clamping parts 25, 25 on both sides of the slit of the armature 21 are connected by a rib 26 and the engaging part 27 engaged with the rib 26 is provided to the beam 22.

37. 发明专利

JPH06122225A THERMAL-HEAD CONTROLLER 失效
公开(公告)号：JPH06122225A
公开(公告)日：1994-05-06
申请号：JP27386692
申请日：1992-10-13
申请人： FUJITSU ISOTEC LTD
发明人： YAMAMOTO MASAO
IPC分类号： B41J2/365
摘要： PURPOSE:To prevent the lowering of dot temperature caused by the passing of non-conduction data for other dots without providing a latch circuit. CONSTITUTION:A converting means 8 converts the conduction data (d), which are sent as series signals (c), into the parallel signals (b). A thermal head 2 has a plurality of heating elements (a), which are provided so as to correspond to the signals that are converted into the parallel signals with the converting means. A control means 1 imparts the conduction data for turning ON all heating elements of the thermal head when printing is instructed and thereafter imparts the conduction data corresponding to the printed information to the conversion means 8.

38. 发明专利

JPH0683172A IMAGE RECORDER 失效
公开(公告)号：JPH0683172A
公开(公告)日：1994-03-25
申请号：JP23443092
申请日：1992-09-02
申请人： FUJITSU LTD , FUJITSU ISOTEC LTD
发明人： YOSHIZU KUNIHIRO
IPC分类号： G03G15/08
摘要： PURPOSE:To restrict a developing roller and a doctor blade when left above for a long period of time in a image recorder such as an electrophotographic printer. CONSTITUTION:In the image recorder provided with a photosensitive drum 11, the developing roller 15 supported by a developing case 13 and the doctor blade 16, a developing motor 20 driving the developing roller 15 uses a forward/ backward rotating motor and a retractable mechanism 17 for receiving transmission of driving force when the developing motor 20 is driven in backward and moving the developing case 13 to a retracting position where the developing roller 15 is retracted from the photosensitive drum 11 is provided. Furthermore, an energizing force elimination means 18 for eliminating the energizing force of an energizing means 22 energizing the doctor blade 16 interlocked with the moving action of the developing case 14 to the retracting position is provided.

39. 发明专利

JPH05252654A 失效
公开(公告)号：JPH05252654A
公开(公告)日：1993-09-28
申请号：JP5523491
申请日：1991-03-20
申请人： FUJITSU ISOTEC LTD
发明人： SATO YUICHI
IPC分类号： H02H3/20 , H02H11/00
摘要： PURPOSE:To prevent the breakage of a circuit to be protected by a method wherein a power supply line for the circuit to be protected is cut automatically when the circuit is connected to an AC power supply having a high voltage higher than a predetermined voltage. CONSTITUTION:When the input terminals 1a, 1b of a rectifier 1 are connected to an AC power supply, whose voltage exceeds a predetermined level, the DC voltage between output terminals 1c, 1d exceeds a predetermined voltage whereby a first switching transistor 3 is put ON and an electric current, being conducted through a second switching transistor 8, flows through the first switching transistor 3. As a result, the second switching transistor 8 is put OFF and the exciting of a circuit 100 to be protected is stopped. According to this method, the breakage of the circuit 100 to be protected can be prevented.

40. 发明专利

JPH05238007A 失效
公开(公告)号：JPH05238007A
公开(公告)日：1993-09-17
申请号：JP3915292
申请日：1992-02-26
申请人： FUJITSU ISOTEC LTD
发明人： KAWAMURA TAKUMI , OKAZAKI TOMOHIRO , HASEGAWA EIICHI
IPC分类号： B41J2/045 , B41J2/055
摘要： PURPOSE:To provide an ink jet head with which joining of the heads can be made easily when color printing is to be made. CONSTITUTION:Printing by an ink jet head 20 is made in a way in which a vibration plate 22 is driven by operation of a piezoelectric element 25, electrically connected to a drive pulse pattern part 29 and an SG pattern part 30, and pressure is produced in a pressure chamber 27 of an ink passage 26, and thereby the ink is ejected for the printing from a nozzle 28.

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