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

JPH0464499A APPARATUS FOR CONTROLLING VERTICAL MOVEMENT OF PEN OF AUTOMATIC DRAWING APPARATUS 失效
公开(公告)号：JPH0464499A
公开(公告)日：1992-02-28
申请号：JP17645690
申请日：1990-07-05
申请人： HITACHI SEIKO KK
发明人： NAGAMORI KAZUHARU , KOBAYASHI TOSHIBUMI
IPC分类号： B43L13/00
摘要： PURPOSE:To realize the soft landing of a pen, to increase the vertical moving speed of the pen and to carry out automatic drawing at high speed by providing an acceleration and deceleration signal generating circuit moving the pen to a desired height successively through acceleration, deceleration and constant-speed drivings when the pen is vertically moved. CONSTITUTION:When the output of an integration circuit 13 is -3V and an analogue switch H is turned ON, the signal obtained by adding the output of the integration circuit 13 and position output P through resistors R1a, R1b having the same resistance value is inputted to the input terminal of a phase compensation circuit 14. Therefore, a position servo is operated until the input of the phase compensation circuit 14 becomes 0V and, as a result, a pen 5 becomes stable at a position where the position output P becomes 3V. The output signal 30 of the integration circuit 13 is also applied to an acceleration and deceleration signal generating circuit 20 and the current command corresponding to an acceleration or deceleration current is added to the input of a constant current amplifier 2 by the change of the relative moving quantity of the pen at the time of the upward or downward movement of the pen 5. By appropriately adding acceleration and deceleration currents at the time of the vertical movement of the pen 5, the acceleration of the pen tip at the time of the contact with a recording medium 16 can be suppressed to the min. degree within a short time.

32. 发明专利

JPH0353663A METHOD AND APPARATUS FOR INK JET COLOR RECORDING 失效
公开(公告)号：JPH0353663A
公开(公告)日：1991-03-07
申请号：JP18738189
申请日：1989-07-21
申请人： HITACHI SEIKO KK
发明人： NAGAMORI KAZUHARU , SAKATA MASATOSHI
IPC分类号： B41J2/21 , B41J2/205 , H04N1/23
摘要： PURPOSE:To obtain a recording picture with a desired color tone in a short time by drawing plural recording pictures with different color tone at a batch. CONSTITUTION:The ink jet color recorder uses 4 kinds of color ink sets, provides an identical constitution for each color ink, and consists of a picture input device 1, a picture storage section 2, an operating means 4, a color tone conversion circuit 8, a picture drawing means 11 and a recording carrier P. A same picture data is corrected with plural different correction values to draw plural recording pictures with different color tone simultaneously. Thus, the desired color tone recording picture is obtained in a short time.

33. 发明专利

JPH01291950A INK JET RECORDING APPARATUS 失效
公开(公告)号：JPH01291950A
公开(公告)日：1989-11-24
申请号：JP12176088
申请日：1988-05-20
申请人： HITACHI SEIKO KK
发明人： NAGAMORI KAZUHARU , NAMEKAWA SATOSHI
IPC分类号： B41J2/02 , B41J2/12 , B41J2/195
摘要： PURPOSE:To enable the adjustment of the physical properties of ink at a proper timing and thereby to conduct recording of high quality, by a method wherein a change in the physical properties of the ink is taken as a change in a voltage impressed on a piezoelectric element, the voltage is compared with a voltage set beforehand and the time of adjustment of the physical properties of the ink is displayed. CONSTITUTION:The upper and lower limits of a voltage to be impressed on a piezoelectric element 2 of a nozzle 1 are set beforehand in a setting circuit 15. A detecting circuit 14 detects constantly a voltage on which an instruction is given by a control circuit 13. A comparator circuit 16 compares voltage set in the setting circuit 15 with the voltage detected by the detecting circuit 14 at predetermined intervals, and when the detected voltage exceeds the limit of the set voltage, it sends a signal to a display circuit 17. Based on the signal impressed from the comparator circuit 16, the display circuit 17 displays that the physical properties of ink are at the time of adjustment. By adjusting the physical properties of the ink on the basis of the display of the display circuit 17, accordingly, recording can be conducted at all times with the ink having the physical properties within a prescribed scope, and therefore recording of high quality can be conducted.

34. 发明专利

JPS63102950A COLOR INK JET RECORDER 失效
公开(公告)号：JPS63102950A
公开(公告)日：1988-05-07
申请号：JP24762886
申请日：1986-10-20
申请人： HITACHI SEIKO KK
发明人： NOGUCHI IKUO , NAGAMORI KAZUHARU
IPC分类号： B41J2/21 , B41J2/015 , B41J2/205 , H04N1/23
摘要： PURPOSE:To prevent the occurrence of streaks, by a construction wherein, in matrixes of arrangement of thresholds, one matrix arrangement is successively shifted to the other matrix arrangement and the thresholds in these matrixes are used in order. CONSTITUTION:A basic matrix Mo and 1st-3rd matrixes M1-M3 having columns successively shifted to the basic matrix Mo are stored in a memory part 31 so that the thresholds of the same column of each matrix are repeatedly fetched in order. In this manner, the possibility that the same threshold of the same arrangement is repeatedly outputted by every picture element as shown in a conventional device is eliminated, which results in the output of different thresholds per picture element. Thus, the same pattern with respect to the density of each picture element can be broken. In this manner, the occurrence of streak can be prevented.

35. 发明专利

JPS60262662A INK JET RECORDER 失效
公开(公告)号：JPS60262662A
公开(公告)日：1985-12-26
申请号：JP11907384
申请日：1984-06-12
申请人： HITACHI SEIKO KK
发明人： SAKATA MASATOSHI , NAGAMORI KAZUHARU
IPC分类号： B41J2/125 , B41J2/20
摘要： PURPOSE:To detect leakage of an ink at an electrode or the like, by providing a current-detecting means in a circuit which connects an electrode for passing jetted ink droplets therethrough and a pulse-generating circuit for impressing a voltage on the electrode in accordance with a charging signal to each other. CONSTITUTION:In a normal condition wherein the electrodes 6a, 6b are free of leakage of the ink, almost no electric current flows in correcting circuits between the pulse-generating circuits 8a, 8b and the electrodes 6a, 6b. When the ink leaks at the electrode 6a, a minute electric current flows in the connecting circuit, is detected by a pulse transformer 11a, is amplified by an amplifier 12a, and the amplified current is passed through a rectifying circuit 13a to a comparator 14a, where it is compared with a set voltage Vs. When the output voltage of the circuit 13a is not lower than the set voltage, an output from the comparator 14a is at a high level, and an output from an OR circuit 15 is also at a high level, whereby an indicator 16 is actuated.

36. 发明专利

JPS5856898A FORM FEEDING FRICTION COMPENSATION CIRCUIT FOR DRUM TYPE AUTOMATIC DRAWING MACHINE 失效
公开(公告)号：JPS5856898A
公开(公告)日：1983-04-04
申请号：JP15482981
申请日：1981-10-01
申请人： HITACHI SEIKO KK
发明人： SOTOZONO HIROSHIGE , NAGAMORI KAZUHARU
IPC分类号： B41J11/42 , B43L13/00

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