公开(公告)号：DE69703255D1

公开(公告)日：2000-11-16

申请号：DE69703255

申请日：1997-01-31

Applicant: SONY CORP

Inventor： AIHARA TAKASHI ,  NAGANUMA TOHRU ,  ANDO MAKOTO ,  OKAMOTO KENJI ,  KISHIMA KOICHIRO

IPC: B41J2/135 ,  B41J2/14 ,  B41J2/16 ,  B41J2/205 ,  B41J2/21 ,  B41J2/04

Abstract: A printing head that prevents ink, diluent, and a mixed solution thereof from adhering to a spreading about a portion of the printing head around a nozzle. A printing apparatus using such a printing head has an enhanced ability to reproduce a gradation of concentration, thereby making it possible to form a recorded image of high resolution. The printing head has a first nozzle (34), which discharges a discharge medium, and a second nozzle (36), which discharges a metering medium. The orifices of the first and second nozzles are adjacent to each other in a nozzle outlet face (38a) of the printing head. A groove, a hydrophilic portion, or an insular projection is formed between the first and second nozzles to control the spread of ink, diluent, and a mixed solution thereof around the nozzles. The hydrophilic portion may be made by a non-processed portion of the outlet face of the printing head, and a portion other than the non-processed portion may be made a hydrophobic portion. Several variations of the groove, hydrophilic portion, and insular projection are disclosed.

公开(公告)号：DE69608737D1

公开(公告)日：2000-07-13

申请号：DE69608737

申请日：1996-03-26

Applicant: SONY CORP

Inventor： NAGANUMA TOHRU ,  SATO MASAYUKI

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/205 ,  B41J2/21

Abstract: In a liquid jet recording apparatus, a stable ink ejection/recording operation is realized, and a natural image with improved multi-gradation is recorded. In the liquid jet recording apparatus for mixing a dilution liquid with ink quantified by utilizing displacement of a piezoelectric device in response to print data, and for ejecting a mixture fluid made by mixing the ink with the dilution fluid so as to perform a recording operation, when the ink is quantified, a rising speed of a signal applied to the piezoelectric device is selected to be lower than, or equal to 1V/microsecond.

公开(公告)号：DE69703255T2

公开(公告)日：2001-04-05

申请号：DE69703255

申请日：1997-01-31

Applicant: SONY CORP

Inventor： AIHARA TAKASHI ,  NAGANUMA TOHRU ,  ANDO MAKOTO ,  OKAMOTO KENJI ,  KISHIMA KOICHIRO

IPC: B41J2/135 ,  B41J2/14 ,  B41J2/16 ,  B41J2/205 ,  B41J2/21 ,  B41J2/04

Abstract: A printing head that prevents ink, diluent, and a mixed solution thereof from adhering to a spreading about a portion of the printing head around a nozzle. A printing apparatus using such a printing head has an enhanced ability to reproduce a gradation of concentration, thereby making it possible to form a recorded image of high resolution. The printing head has a first nozzle (34), which discharges a discharge medium, and a second nozzle (36), which discharges a metering medium. The orifices of the first and second nozzles are adjacent to each other in a nozzle outlet face (38a) of the printing head. A groove, a hydrophilic portion, or an insular projection is formed between the first and second nozzles to control the spread of ink, diluent, and a mixed solution thereof around the nozzles. The hydrophilic portion may be made by a non-processed portion of the outlet face of the printing head, and a portion other than the non-processed portion may be made a hydrophobic portion. Several variations of the groove, hydrophilic portion, and insular projection are disclosed.

公开(公告)号：DE69232391D1

公开(公告)日：2002-03-14

申请号：DE69232391

申请日：1992-10-28

Applicant: SONY CORP

Inventor： EGUCHI YASUHITO ,  NAGANUMA TOHRU ,  NANBARA TORU

IPC: G06K15/12 ,  B41J2/455

Abstract: An image drawing apparatus wherein the scanning speed is reduced without decreasing the image drawing speed for forming an image to achieve reduction of the noise and assure a long life. The image drawing apparatus for drawing an image in accordance with image data comprises a laser light source (14) for generating a plurality of laser beams, a galvano mirror (17) for deflecting the plurality of beams of light generated from the laser light source (14) , and a rotary drum (1) on which a predetermined image is to be drawn by the plurality of beams of light deflected by the galvano mirror (17).

公开(公告)号：DE69608737T2

公开(公告)日：2001-02-08

申请号：DE69608737

申请日：1996-03-26

Applicant: SONY CORP

Inventor： NAGANUMA TOHRU ,  SATO MASAYUKI

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/205 ,  B41J2/21

Abstract: In a liquid jet recording apparatus, a stable ink ejection/recording operation is realized, and a natural image with improved multi-gradation is recorded. In the liquid jet recording apparatus for mixing a dilution liquid with ink quantified by utilizing displacement of a piezoelectric device in response to print data, and for ejecting a mixture fluid made by mixing the ink with the dilution fluid so as to perform a recording operation, when the ink is quantified, a rising speed of a signal applied to the piezoelectric device is selected to be lower than, or equal to 1V/microsecond.