公开(公告)号：JP2002079744A

公开(公告)日：2002-03-19

申请号：JP2000272051

申请日：2000-09-07

Applicant: CANON KK

Inventor： SUMITA KATSUTOSHI ,  ASAOKA MASANOBU

IPC: B41J2/01 ,  B41M5/00 ,  B41M5/50 ,  B41M5/52

Abstract: PROBLEM TO BE SOLVED: To provide a recording medium, which is excellent in ink absorbency, has a high image density and is excellent in lustrous properties by a method wherein the recording medium has an ink accepting layer mainly made of crystalline aluminum oxide particles and the manufacturing method of the recording medium. SOLUTION: The recording medium has an ink accepting layer made of γ-alumina particles, which have the average particle diameter of 0.21 μm or more and 1.0 μm or less and 90% or more of total of which is ones having a particle diameter less than 1.0 μm, and a binder under the condition that the layer has a surface specular glossiness measured at 75 deg. of 50% or more.

公开(公告)号：JPH11286171A

公开(公告)日：1999-10-19

申请号：JP2761099

申请日：1999-02-04

Applicant: CANON KK

Inventor： ASAOKA MASANOBU ,  HOSOI NOBUYUKI ,  ISHIZAKI AKIYOSHI ,  SUMITA KATSUTOSHI

IPC: B41J2/01 ,  B41M5/00 ,  B41M5/50 ,  B41M5/52 ,  C01F7/02

Abstract: PROBLEM TO BE SOLVED: To improve the speed of ink absorptiveness, and thereby improve the reproducibility of printing dot configurations by employing ones in which a total of the pore volume of pores having a specific value of the maximum pore diameter and pore diameter in fine powders forming an ink receptor layer of a recording medium at the time of making a pore diameter distribution of the fine powders. SOLUTION: Fine powders of alumina hydrate or the like for formation of an ink receptor layer of a recording medium is prepared such that a total of the pore volume of pores having a maximum pore diameter of 90-120 Å and a pore diameter of 50 Å or less is 6.0% or less to the entire pore volume at the time of making a pore diameter distribution of fine particles. In addition, such fine particles is produced in that particles being N1 in the maximum pore diameter of a pore diameter distribution is subjected to post treatment to be N1 ≈n2 or N2

公开(公告)号：JPH09197424A

公开(公告)日：1997-07-31

申请号：JP950396

申请日：1996-01-23

Applicant: CANON KK

Inventor： TAKEDA YASUAKI ,  ITO YASUHIRO ,  HANIYU YUKIO ,  MORIYAMA TAKASHI ,  ASAOKA MASANOBU ,  ASAO YASUSHI ,  NAKAZAWA IKUO

IPC: G02F1/1337 ,  G02F1/1343

Abstract: PROBLEM TO BE SOLVED: To make it possible to suppress the flickering of a screen in multiplex- driving. SOLUTION: An alignment layer is formed stop transparent electrodes 2 and metallic electrodes 3. The alignment layer is subjected to a uniaxial alignment layer treatment, by which liquid crystals are oriented. In the case of this uniaxial alignment layer treatment, the angles formed by the respective sides 61a, 62a which exist on upward side in an uniaxial alignment layer treatment direction among the longitudinal direction sides 61, 61a and transverse sides 62, 62a of the pixels 6A formed of the metallic electrodes 3 are set at the angles at which the smaller of the angles formed by the respective sides 61a, 62a and the uniaxial alignment layer treatment direction R2 attains

公开(公告)号：JPH09113913A

公开(公告)日：1997-05-02

申请号：JP29603695

申请日：1995-10-20

Applicant: CANON KK

Inventor： MORIYAMA TAKASHI ,  HANIYU YUKIO ,  ITO YASUHIRO ,  ASAOKA MASANOBU ,  TAKEDA YASUAKI ,  NAKAZAWA IKUO ,  ASAO YASUSHI

IPC: G02F1/137 ,  C09K19/06 ,  G02F1/13 ,  G02F1/1337 ,  G02F1/1343

Abstract: PROBLEM TO BE SOLVED: To make it possible to obtain the good and uniform orientation of oriented films formed as thin films by forming LB films of an alignment layer thickness on electrodes consisting of amorphous ITO subjected to surface flattening. SOLUTION: This chiral smectic liquid crystal element has a pair of the substrates 11a, 11b which are disposed to face each other by holding the chiral smectic liquid crystals 15 therebetween and are respectively formed with the transparent counter electrodes 12a, 12b for impressing voltage on the chiral smectic liquid crystals 15 on their opposite surfaces. The chiral smectic liquid crystals 15 in an oriented state exhibits at least two optically stable states. At least one electrodes of a pair of the counter electrodes 12a, 12b consist of the amorphous ITO subjected to surface roughening and have the alignment layers 14a, 14b consisting of the LB films having

公开(公告)号：JPH09113912A

公开(公告)日：1997-05-02

申请号：JP29603595

申请日：1995-10-20

Applicant: CANON KK

Inventor： MORIYAMA TAKASHI ,  HANIYU YUKIO ,  ITO YASUHIRO ,  ASAOKA MASANOBU ,  TAKEDA YASUAKI ,  NAKAZAWA IKUO ,  ASAO YASUSHI

IPC: G02F1/1337 ,  C09K19/06

Abstract: PROBLEM TO BE SOLVED: To make it possible to obtain uniform orientation by providing a pair of substrates holding chiral smectic liquid crystals with LB films obtd. under conditions specifying a cumulative surface pressure by using an LB method on the counter electrodes of these substrates. SOLUTION: This chiral smectic liquid crystal element has a pair of the substrates 11a, 11b which are disposed to face each other by holding the chiral smectic liquid crystals 15 therebetween and are respectively formed with the electrodes 12a, 12b for impressing voltage on the chiral smectic liquid crystals 15 on their opposite surfaces. The chiral smectic liquid crystals 15 in an oriented state exhibits at least two optically stable states. The element has oriented films 14a, 14b consisting of the LB films obtd. under the conditions under which the cumulative surface pressure attains >=65% of decay pressure by using the Langmuir-Brodgett(LB) method on the least one electrodes of a pair of the counter electrodes 12a, 12b. Further preferably, at least one counter electrodes are not subjected to a uniaxial alignment layer treatment.

公开(公告)号：JPH0996819A

公开(公告)日：1997-04-08

申请号：JP19596396

申请日：1996-07-25

Applicant: CANON KK

Inventor： ASAOKA MASANOBU ,  HANIYU YUKIO ,  TAKEDA YASUAKI ,  MORIYAMA TAKASHI ,  ITO YASUHIRO ,  NAKAZAWA IKUO ,  ASAO YASUSHI

IPC: G02F1/1337

Abstract: PROBLEM TO BE SOLVED: To obtain a liquid crystal device having a stable liquid crystal layer, excellent orientation state, high contrast, fast response rate, high precision and high brightness by using a specified uniaxially oriented polyimide thereby forming an oriented film. SOLUTION: The oriented film consists of an uniaxially oriented polyimide expressed by formula. The chiral smectic liquid crystal compsn. has no cholesteric phase but has an interlayer distance (dA) at the first shift point where the interlayer distance decrease and bends near the transition temp. from a smectic-A phase to a chiral smectic-C phase and an interlayer distance (dmin ) at the second shift point as the min. where the interlayer distance increases again with temp. decrease from the first shift point. The interlayer distance (dA) at the first shift point and the interlayer distance (dmin ) at the second point satisfy the relation of 0.990 =1) or an aliphatic group including alicyclic groups.

公开(公告)号：JP2556587B2

公开(公告)日：1996-11-20

申请号：JP11961289

申请日：1989-05-11

Applicant: CANON KK

Inventor： HANYU YUKIO ,  ASAOKA MASANOBU

IPC: G02F1/1337

公开(公告)号：JP2556586B2

公开(公告)日：1996-11-20

申请号：JP11961189

申请日：1989-05-11

Applicant: CANON KK

Inventor： HANYU YUKIO ,  ASAOKA MASANOBU

IPC: G02F1/1337

公开(公告)号：JP2556583B2

公开(公告)日：1996-11-20

申请号：JP11960889

申请日：1989-05-11

Applicant: CANON KK

Inventor： HANYU YUKIO ,  ASAOKA MASANOBU

IPC: G02F1/1337

公开(公告)号：JPH08227077A

公开(公告)日：1996-09-03

申请号：JP3411595

申请日：1995-02-22

Applicant: CANON KK

Inventor： MARUYAMA TOMOKO ,  ASAOKA MASANOBU ,  TAKAO HIDEAKI

IPC: G02F1/137 ,  G02F1/1337 ,  G02F1/141

Abstract: PURPOSE: To suppress the movement of liquid crystal molecules and to prevent the occurrence of defects according to a change in cell thickness. CONSTITUTION: Particulates 9a,... and particulates 9b,... varying in sizes are incorporated into insulating films 3a, 3b of a liquid crystal display element. These particulates 9a, 9b are exposed on the surfaces of the insulating films 3a, 3b and further, many pieces of ruggedness are formed on the surfaces of orientation control films 5a, 5b. Then, even if the liquid crystal molecules tend to move according to the driving of the liquid crystal display element, the movement is suppressed by such ruggedness. Consequently, the orientation defect according to the change in the cell thickness is prevented. The ruggedness is formed by differences in the heights of the particulates 9a and the particulates 9b varying in sizes and, therefore, the distribution of the ruggedness is made more uniform than in the case by the particulates of single size. The marked effect of suppressing the movement of the liquid crystal molecules and preventing the orientation defects is thus obtd.