公开(公告)号：JPH0566225A

公开(公告)日：1993-03-19

申请号：JP22896091

申请日：1991-09-09

Applicant: CANON KK

Inventor： YAMAMOTO NOBUKO ,  NOMOTO TAKESHI ,  TOMITA YASUKO ,  OYAMA JUNJI ,  KAWAGUCHI MASAHIRO

IPC: G01N33/92

Abstract: PURPOSE:To obtain a simple method for determining the quantity of lipid, which is suitable for determining the lipid having amphipatic property forming a aggregate in aqueous medium. CONSTITUTION:A sample s treated in aqueous medium with surface active agent. Bivalent copper ions and bicinchoninic acid are made to react. When the lipid is present, the coloration state accompanied by the formation of the complex compound caused by the reaction of univalent copper ions formed from the bivalent copper ions and bicinchoninic acid is measured by measuring the absorbance at 562nm. The concentration of the liquid is computed by the expression of lipid concentration=absorbance/C by using a concentration constant C obtained from reference liquid by the same operation.

公开(公告)号：JPH04360700A

公开(公告)日：1992-12-14

申请号：JP15506991

申请日：1991-06-01

Applicant: CANON KK

Inventor： TOMITA YASUKO ,  NOMOTO TAKESHI ,  KAWAGUCHI MASAHIRO ,  OYAMA JUNJI ,  YAMAMOTO NOBUKO ,  SAKURANAGA MASANORI

IPC: C12Q1/00 ,  C12Q1/42

Abstract: PURPOSE:To provide the title tester easy to make, also simple in measuring operation using the same, low in its making and measuring costs, also good in measurement sensitivity. CONSTITUTION:A measuring base material such as filter paper is immersed in a solution containing an ATP-degrading enzyme, molybdic acid and ascorbic acid followed by lyophilization to effect adsorption and immobilization of these components onto the base material. On reaction between the resultant base material and an ATP-contg. solution, blue color reaction will occur due to molybdenum blue formation, the degree of the color development being proportional to ATP concentration. Taking advantage of this color reaction, the ATP concentration in a sample can readily be determined.

公开(公告)号：JPH0363300A

公开(公告)日：1991-03-19

申请号：JP19705789

申请日：1989-07-29

Applicant: CANON KK

Inventor： SUGANO TSUNEHIRO ,  TOMITA YASUKO ,  OYAMA JUNJI ,  SAKURANAGA MASANORI

IPC: A61K9/127 ,  B01J13/02 ,  B01J13/04 ,  C07K14/00 ,  C07K14/195 ,  C07K14/41 ,  C07K14/705 ,  C07K17/12

Abstract: PURPOSE:To form the subject liposome controllable of orientation of membrane protein recombined in macroproteoliposome by modifying a specific position in membrane protein to carrier, subjecting salt solution with membrane lipid to freezing and thawing and dialyzing. CONSTITUTION:A specific position in membrane protein is modified to a carrier and a salt solution containing the said membrane protein and membrane lipid is prepared, then the said salt solution is subjected to freezing and thawing thus dialyzed to a solution of salts having an osmotic pressure lower than the said salt solution to afford the objective liposome. Besides, further the membrane protein is preferably dissociated from the carrier after dialysis. Furthermore, preferably, shape of the said carrier is spherical and the size is equivalent or larger than the diameter of the formed liposome.

公开(公告)号：JPH02228379A

公开(公告)日：1990-09-11

申请号：JP4855089

申请日：1989-03-02

Applicant: CANON KK

Inventor： TOMITA YASUKO ,  SHIROTA KATSUHIRO ,  SUGANO TSUNEHIRO ,  OYAMA JUNJI ,  SAKURANAGA MASANORI

IPC: C09D11/00 ,  C09D11/02 ,  C09D11/033 ,  C09D11/328 ,  C09D11/38

Abstract: PURPOSE:To prepare a recording liquid having an excellent long-storage stability and giving a picture image with an excellent resistance to ozone and change in hue by compounding liposome contg. an antioxidant into a recording liquid contg. a recording material and a liq. medium. CONSTITUTION:Liposome contg. an antioxidant is compounded into a recording liquid contg. a recording material which is a component for forming a recording image and a liq. medium in which said recording material is dissolved or dispersed. Examples of said antioxidant are phenol derivs., erythorbic acid deriv., and ascorbic acid derivs.; pref. amt. of said antioxidant compounded is usually 0.1-10wt.% based on the total of the recording liquid. A pref. recording material is a water-soluble dye, while a pref. liq. medium is water and/or an org. solvent.

公开(公告)号：JPH0218475A

公开(公告)日：1990-01-22

申请号：JP16688488

申请日：1988-07-06

Applicant: CANON KK

Inventor： TOMITA YASUKO

IPC: C09D11/00 ,  C09D11/328

Abstract: PURPOSE:To obtain an aimed ink containing a specific compound in the ink composed of a dye and liquid medium, free from occurrence of clogging in the tip of a pen and nozzle of head and suitable for ink jet recording system. CONSTITUTION:The aimed ink containing a compound expressed by the formula (R1-R3 are H, OH or alkyl; R4 and R5 are H or methyl; m and n are 1-30 and m+n is 2-50), preferably at an amount of 2-10wt.% in the ink composed of a dye and liquid medium.

公开(公告)号：JPH0218473A

公开(公告)日：1990-01-22

申请号：JP16688288

申请日：1988-07-06

Applicant: CANON KK

Inventor： TOMITA YASUKO

IPC: C09D11/00 ,  C09D11/328

Abstract: PURPOSE:To obtain an aimed ink containing a specific compound in the ink composed of a dye and liquid medium, free from occurrence of clogging in the tip of a pen and nozzle of head and suitable for ink jet recording system. CONSTITUTION:The aimed ink containing a compound expressed by the formula (R1-R3 are H, OH or alkyl; R4 and R5 are H or methyl; m and n are 6-40 and m+n is 12-60), preferably at an amount of 2-10wt.% in the ink composed of a dye and liquid medium.

公开(公告)号：JPH01282273A

公开(公告)日：1989-11-14

申请号：JP11060788

申请日：1988-05-09

Applicant: CANON KK

Inventor： TOMITA YASUKO ,  TOCHIHARA SHINICHI

IPC: C09D11/00 ,  C09D11/16

Abstract: PURPOSE:To obtain an ink free from occurrence of clogging at the nib or a fine orifice tip over a long period and capable of recording excellent printing quality without feathering even on an ordinary grade paper by mixing a specified compound with an ink obtained by dispersing a pigment in a liquid medium. CONSTITUTION:(A) An ink obtained by dispersing a pigment in a liquid medium mainly consisting of water and (3) 0.5-30wt.%, preferably 2-15wt.% compound expressed by formula (C) (R1)a(R2)b(R3)c (a, b and c are integer numbers and satisfy a+b+c>=4 and a>=2; R1 is 1-3C alkanol; R2 and R3 are H or 1-5C hydrocarbon; R2not equal to R3; R2 is not H in case of a+b=2 and R1=1C) are blended to provide the objective ink excellent in stability without physical-properties change or deposit of solid components during storage for a long period.

公开(公告)号：JPH01190771A

公开(公告)日：1989-07-31

申请号：JP1620688

申请日：1988-01-26

Applicant: CANON KK

Inventor： TOMITA YASUKO ,  KOIKE SHOJI

IPC: C09D11/00

Abstract: PURPOSE:To obtain a recording fluid which has a high rate of fixation on plain paper and good frequency response and can give a nonblotting print, by mixing an imageforming color component with a liquid medium and a specified compound. CONSTITUTION:0.2-20% image-forming color component of a solubility >=1% at 20 deg.C (e.g., C.I. Food Black 2), 0.1-20wt.% compound having a three- dimensional structure having voids in the inside, an MW >=400 and a water solubility >=3% (e.g., alpha-cyclodextrin), and optionally, a viscosity modifier, a surfactant, a surface tension modifier, a pH controller, an antifungal, etc., are dissolved or dispersed in a liquid medium comprising water and/or an organic solvent (e.g., ethylene glycol monophenyl ether) to obtain a recording fluid of a viscosity

公开(公告)号：JPS63199782A

公开(公告)日：1988-08-18

申请号：JP3371787

申请日：1987-02-16

Applicant: CANON KK

Inventor： TOMITA YASUKO ,  KOIKE SHOJI

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/02

Abstract: PURPOSE:To provide an ink which has excellent water resistance and is free from bleeding on a recording material having exposed fibers, and has excellent fixability and which comprises a water-soluble pigment, an aq. liq. medium capable of dissolving the pigment, and a particular compd. having a three- dimensional structure. CONSTITUTION:A desired ink is obtd. by adding a compd. with a three- dimensional structure having an MW of at least 100 and having pores therewithin to an ink for ink jet recording which comprises a water-soluble pigment as a component capable of forming an image and, as another component, an aq. liq. capable of dissolving the pigment. Representative examples of the compd. with a three-dimensional structure include deoxycholic acid, natural valinomycin antibiotics, and phenylurea oligomers. The aforesaid compd. is added in an amt. of 0.1-20wt.% based on the total wt. of the ink. When the amt. of the compd. is less than 0.1wt.%, any advantageous effect cannot be exhibited with respect to the fixability, printing quality and ejection stability improvement. On the other hand, an amount of larger than 20wt.% unfavorably brings about an increase in the viscosity of the ink and the clogging.

公开(公告)号：JPS63139779A

公开(公告)日：1988-06-11

申请号：JP28706486

申请日：1986-12-02

Applicant: CANON KK

Inventor： KOIKE SHOJI ,  TOMITA YASUKO

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00

Abstract: PURPOSE:To obtain a recording having excellent fastnesses, especially, water resistance by altering the aqueous soluble group of aqueous soluble dye by oxidizing to aqueous nonsoluble group to be fixed on a material to be recorded. CONSTITUTION:Ink using aqueous soluble de is adhered on a material to be recorded to record by an ink jet type. Since the ink is of dissolution type, an ink supply passage and a nozzle are not clogged. After the ink is adhered to the surface to be recorded, the aqueous nonsoluble group to be fixed. Thus, a recorded material which has excellent water resistance is obtained. The dye preferable uses aqueous soluble dye, such as soluble vat dye, soluble sulfide dye, leuco salt of vat dye, leuco slat of sulfide dye, oxide dye, etc.