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41. 发明专利

JPH04314075A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH04314075A
公开(公告)日：1992-11-05
申请号：JP10637491
申请日：1991-04-12
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： NAGATA TETSUYA , UMEDA TAKAO , TAKUMA YASUO , IKAWA TATSUO , YAMADA MASATO
IPC分类号： G03G15/16 , G03G15/00 , G03G21/00 , G03G21/10
摘要： PURPOSE:To obtain the image forming device capable of preventing a transfer material from winding an image carrier at the time of transfer and preventing the front end from being soiled at the time of the change of the size of the transfer material. CONSTITUTION:The image forming device is provided with: the image carrier 1; means 3 and 4 for forming a visible picture on the image carrier 1 according to projected picture-information; a transfer material carrying means 10 for holding and carrying the transfer material 9; a transfer means 5 for transferring the visible picture on the transfer material 9 at the transfer point where the image carrier 1 and the transfer material carrying means 10 are in contact with each other; and a winding preventing means for preventing the transfer material 9 from being held and carried by the image carrier 1 after the transfer. In this image forming device, the winding preventing means comes into contact with the transfer material carrying means 10 on the upstream side of the transfer point, and is composed of a pressing guide 13 arranged in the direction of the width of the transfer material carrying means 10 by which transfer materials 9 of all sizes are carried.

42. 发明专利

JPH03217887A ELECTROSTATIC RECORDER 失效
公开(公告)号：JPH03217887A
公开(公告)日：1991-09-25
申请号：JP1257190
申请日：1990-01-24
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： UMEDA TAKAO , NAGATA TETSUYA , IKAWA TATSUO , NAKAMURA KIMIO , NISHINO SHINICHI , OGAWA TOSHITAKA
IPC分类号： G03G15/16 , G03G15/00 , G03G15/02 , G03G21/00 , G03G21/16
摘要： PURPOSE:To prevent toner from being wasted and the device from being contaminated by forming a specific dielectric film at the part of a photosensitive drum where a photosensitive body is not present. CONSTITUTION:A cap member 1 is treated thermally at about 560 deg.C, then the surface and flank are coated with aluminum enamel material paste of low- fusion-point glass uniformly and baked at 520-540 deg.C to form a dielectric aluminum enamel film 2 of 30 mum in film thickness, 53 in dielectric constant, and 10 -10 OMEGA.cm in volume resistivity. The parallel circuit of a capacitor 5 with o.01 muF capacity and a varistor 6 whose varistor operating voltage is 800V is connected to the aluminum enamel film 2. Thus, the dielectric film which has a

43. 发明专利

JPH0228125B2 失效
公开(公告)号：JPH0228125B2
公开(公告)日：1990-06-21
申请号：JP12330583
申请日：1983-07-08
申请人： HITACHI LTD
发明人： UMEDA TAKAO , OOISHI KAZUYA , IKAWA TATSUO , HORI YASURO , NAGAE KEIJI , ISOGAI MASATO
IPC分类号： G02F1/133 , B41J2/445 , G02F1/13 , G03G15/04 , G06K15/12 , G09G3/18

44. 发明专利

JPH0284385A RECORDER 失效
公开(公告)号：JPH0284385A
公开(公告)日：1990-03-26
申请号：JP23501288
申请日：1988-09-21
申请人： HITACHI LTD
发明人： UMEDA TAKAO , MITSUYA TERUAKI
IPC分类号： B41M5/26 , B41M5/398
摘要： PURPOSE:To reduce markedly a laser light power required for simultaneous recording and fixation and contrive reductions in size and cost of a recorder by raising the temperature of a toner to a predetermined temperature by a preheater, prior to exposure to an exposure pattern by a laser light or the like. CONSTITUTION:An electrifier is disposed over a paper 1, and electric charges are uniformly distributed on the paper 1. A toner 4a electrified in the opposite polarity by a magnetic brush of a developing device 2 is brought into contact with the lower side of the paper, whereby the toner is attracted by the charges provided by the electrifier, and is adhered uniformly to the entire surface of the lower side of the paper. The toner 4a is preheated to 100 deg.C by heated rollers 6a, 6b for preheating. When an exposure pattern according to an image signal is projected on the toner layer by 7, the toner layer is instantaneously heated to 120 deg.C, and the toner is melted. Of the toner layer, an image pattern portion according to the image signal is fixed onto the paper as a toner image 4b. Then, the charges on the paper is removed by an electrifier 9 for static elimination, upon which the unfixed toner 4c loses an attracting force, and is separated from the paper.

45. 发明专利

JPH01124869A BOTH-SURFACE RECORDER 失效
公开(公告)号：JPH01124869A
公开(公告)日：1989-05-17
申请号：JP28217987
申请日：1987-11-10
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： MITSUYA TERUAKI , KUMASAKA TAKAO , UMEDA TAKAO , HORI YASURO , SHIMOKAWABE IKUO , HOSHI NOBUYOSHI
IPC分类号： G03G15/00 , G03G15/20 , G03G15/23
摘要： PURPOSE:To prevent a component on a conveyance path, etc., from being stained by conveying the printing surface of recording paper with an air flow without containing until the toner image surface is solidified. CONSTITUTION:The recording paper 13 which is sent from a recording paper entrance 10 is passed through a conveyance path 4 and a development station 3 forms a toner image 14. Then the recording paper 13 is fixed by a heat roll 1 and a backup roll 2, and sent to an aerial conveying device 15. The device 15 blows an air blow out of upper and lower blow-out holes 21 to convey the paper 13 while cooling the image 14. Then when the image 14 reaches an inversion claw 9, the toner is fixed completely and the end is separated from the rollers 1 and 2 at the same time 13. Consequently, the paper 13 is conveyed stably in the device 15 and toner sticks on neither an inversion path 6 and a conveyance path 8.

46. 发明专利

JPH01113792A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JPH01113792A
公开(公告)日：1989-05-02
申请号：JP26948087
申请日：1987-10-27
申请人： HITACHI LTD
发明人： NAGATA TETSUYA , UMEDA TAKAO , IKAWA TATSUO
IPC分类号： G09G3/36 , G02F1/133
摘要： PURPOSE: To prevent the deterioration of liquid crystal(LC) elements by a simple method by providing the LC device with a mechanism for setting up at least one of plural potential levels to be supplied to the LC elements to earth potential, and in a non-operation period, simultaneously setting up counter electrodes in all LC elements to the earth potential. CONSTITUTION: A control circuit 32 sends a scanning electrode data signal 3 and a scanning electrode control signal 39 to a scanning electrode driving circuit 34 and sends a signal electrode data signal 38 and a signal electrode control signal 40 to a signal electrode driving circuit 35. Scanning electrode power supply circuits 33, 36 for supplying output potential levels u1 to u4 , v1 to v4 are respectively connected to both the driving circuits 33, 36 and control signals 41, 42 are respectively used for switching at least one of four potential levels to the earth potential. When the control signals 41, 42 are sent in a non- printing period, the earth potential is respectively outputted from the circuits 34, 35, all electrodes on an optical switch array 21 are earthed to prevent the deterioration of the LC elements.

47. 发明专利

JPS63231372A INFORMATION COMPOSING RECORDER 失效
公开(公告)号：JPS63231372A
公开(公告)日：1988-09-27
申请号：JP6387587
申请日：1987-03-20
申请人： HITACHI LTD
发明人： UMEDA TAKAO , NAGATA TETSUYA , SHIMAZAKI YUZURU , IKAWA TATSUO , HORI YASURO
IPC分类号： G03G15/04
摘要： PURPOSE:To satisfy both of a copying function and printing function with one light source and to reduce the size of an information composing recorder by making common use of a line light source such as fluorescent lamp or halogen lamp used for a copying machine as a light source for an optical printer. CONSTITUTION:An optical shutter 10 is opened and an optical switch array 5 is closed to project the light 7 from an aperture 3 of the line light source 1 through a lens 11 on an original 14 at the time of operating this information composing recorder as the copying function. An original platen 10 is moved at this time in synchronization with the rotation of a photosensitive drum 9 and a latent image is formed by a 'Selfoc lens(R)' 6 on the drum 9. The shutter 10 is closed to project the light of the light source 1 through an aperture 2 and a rod lens 4 on the switch array 5 at the time of operating the device as the optical printer. The respective optical switches of the switch array 5 are switched in accordance with electrical information signals to form the light patterns corresponding to said signals to form the latent image on the drum 9 by the lens 6.

48. 发明专利

JPS6330088A STEREOSCOPIC TELEVISION SYSTEM 失效
公开(公告)号：JPS6330088A
公开(公告)日：1988-02-08
申请号：JP17160486
申请日：1986-07-23
申请人： HITACHI LTD
发明人： HORI YASURO , UMEDA TAKAO
IPC分类号： G02B27/22 , G03B35/16 , H04N13/04
摘要： PURPOSE:To make a flicker inconspicuons by applying a high-speed optional switch using a ferroelectric liquid crystal to stereoscopic spectacles and switching two sets of left/right television camera signals within one field time to change the left/right picture at each 1/60sec substantially. CONSTITUTION:Signals from right/left television cameras 1 are switched by a left/right signal switch 3 by using a signal from a signal generator 2 switching the right/left pictures and sent to a monitor television set 4. The picture from the monitor television set is seen in a duplicated state while the left/right camera pictures are overlapped by unaided eyes, but by using spectacles 5 provided with an optical switch switched by using a signal from the generator 2 independently of left/right directions, the picture from the left/right cameras are viewed respectively by left/right eyes and the picture is recognized by a stereoscopic picture. By using an element using a ferroelectric liquid crystal as the optical switch, high-speed operation is attained and the titled system is constituted at a comparatively low cost.

49. 发明专利

JPS62211162A IMAGING HEAD 失效
公开(公告)号：JPS62211162A
公开(公告)日：1987-09-17
申请号：JP5247086
申请日：1986-03-12
申请人： HITACHI LTD
发明人： SHIMAZAKI YUZURU , UMEDA TAKAO , NAGATA TETSUYA , IKAWA TATSUO , HORI YASURO
IPC分类号： B41J2/445 , B41J2/44 , G02B6/00 , G02F1/133 , G02F1/1335 , G02F1/13357 , G03G15/04
摘要： PURPOSE:To enable high-speed printing by focusing light flux emitted from plural slit apertures of a fluorescent lamp onto a switch window of liquid crystal optical switch array. CONSTITUTION:An aluminium foil 25 is wound around an aperture of a fluorescent lamp 22 with an aperture having an opening angle theta=90 deg., and then the aluminium foil is peeled off after providing a notch. As a result, a slit 24 of transparent window is formed at three places. Light is collected from three slits 24-1-24-3 to a switch window 29 of a liquid crystal optical switch array 28 by a sheet-like optical plastic fiber 26-1-26-3. The light passing through the liquid crystal optical switch array 28 runs through SLA(cellhock lens array) 29, thus allowing an erect image to be focused on the surface of a photosensitive element 30.

50. 发明专利

JPS6117127A Driving method of optical switch element 失效
标题翻译：光开关元件的驱动方法
公开(公告)号：JPS6117127A
公开(公告)日：1986-01-25
申请号：JP13878684
申请日：1984-07-04
申请人： Hitachi Ltd
发明人： UMEDA TAKAO , OOISHI KAZUYA , IKAWA TATSUO , HORI YASUROU
IPC分类号： G09G3/18 , G02F1/01 , G02F1/13 , G02F1/133 , G06K15/12
CPC分类号： G06K15/1252 , G02F1/0121 , G02F1/13306 , Y10S359/90
摘要： PURPOSE: To obtain an element driving method which does not degrade the optical switch capacity and the element, by allowing the uneven distribution of ions at a DC voltage impression time only for a short period or reducing the extent of uneven distribution in the optical switch element driving method using ferroelectric materials.
CONSTITUTION: A light 9 made incident on an optical switch array 14 from a light source 8 is transmitted selectively by electric fields impressed to signal electrode terminals K
1 WK
2048 and a common electrode and is irradiated as a spot to the surface of a photosensitive drum 16 by a condenser lens 15. Switches SA and SB are main switches of voltage sources from which voltages are impressed to a signal eletrode group 6a and a common electrode 6b, and terminals P
1 WP
2048 control individual switch parts. A signal input terminal Q
1 short-circuits paired electrodes. A signal terminal Q
2 impresses reverse voltage to counter electrodes to discharge the accumulted electric charge with respect to polarity. Thus, the electric charge accumulated near an oriented film by application of DC voltage is reduced or eliminated to reduce uneven distribution of ions as much as possible or prevent this uneven distribution, thus preventing the degradation of the capacity of the optical switch element.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了获得不降低光开关容量和元件的元件驱动方法，通过仅在短时间内允许离子在直流电压压印时间的不均匀分布或减小光开关元件中的不均匀分布的程度使用铁电材料的驱动方法。构成：从光源8入射在光开关阵列14上的光9通过施加到信号电极端子K1-K2048和公共电极的电场选择性地传输，并作为点照射到感光鼓16的表面开关SA和SB是电压源的主开关，电压被施加到信号电极组6a和公共电极6b，端子P1-P2048控制各个开关部件。信号输入端子Q1短路成对的电极。信号端子Q2向反电极施加反向电压，以相对于极性放电累积的电荷。因此，通过施加直流电压在取向膜附近积聚的电荷被减少或消除，以尽可能减少离子的不均匀分布，或者防止这种不均匀分布，从而防止光开关元件的容量的劣化。

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