公开(公告)号：EP3626462A1

公开(公告)日：2020-03-25

申请号：EP19195988.1

申请日：2019-09-06

申请人： Ricoh Company, Ltd.

发明人： MOHRI, Masataka ,  HARADA, Yoshihiro ,  USUI, Yuuma

IPC分类号： B41J2/165 ,  B41J2/21 ,  B41J29/393

摘要： A recording apparatus (250, 250a, 250b) includes a recording head (160, 160a), a light source (150), an irradiation optical device (110), a coupling optical device (120), a detector (130), and an arithmetic device (140). The recording head (160, 160a) is configured to eject liquid containing scattering particles. The irradiation optical device (110) is configured to irradiate the recording head (160, 160a) with an irradiation light being at least a part of light emitted from the light source (150). The coupling optical device (120) is configured to couple reflected or scattered light with reference light to from a coupled light. The detector (130) is configured to detect the coupled light formed by the coupling optical device (120). The arithmetic device (140) is configured to acquire an optical interference tomographic image of the liquid inside the recording head (160, 160a) based on the coupled light.

公开(公告)号：EP3476906A1

公开(公告)日：2019-05-01

申请号：EP18200851.6

申请日：2018-10-17

申请人： Ricoh Company, Ltd.

发明人： HARADA, Yoshihiro ,  TAMAI, Takashi ,  HANAZAWA, Atsufumi ,  KOJIMA, Sayuri

IPC分类号： C09D11/30 ,  B41J2/21 ,  B41M5/00

摘要： A liquid discharge system (4) includes a pretreatment execution device (31; 31CT) to perform pretreatment on a medium and a liquid discharge head (21) to discharge liquid onto the medium based on the image information. The liquid discharge system (4) further includes a pretreatment execution controller (110) configured to control a manner of the pretreatment based on image information on an image to be output.

公开(公告)号：EP3624012A1

公开(公告)日：2020-03-18

申请号：EP19195401.5

申请日：2019-09-04

申请人： Ricoh Company, Ltd.

发明人： HARADA, Yoshihiro

IPC分类号： G06K15/02 ,  G06K15/10 ,  H04N1/60 ,  B41J11/00

摘要： A recording apparatus (200, 250, 300, 200a, 200b, 200c) for landing a liquid containing scattering particles onto a recording medium (P, Md) includes a light source (101), an irradiation optical section (110), a coupling optical section (120), a detector (130), a tomographic image acquisition section (152), and a characteristic value output device (158). The irradiation optical section irradiates the liquid landed on the medium with an irradiation light being at least a part of light emitted from the light source. The coupling optical section couples reflected or scattered light with reference light to form a coupled light. The acquisition section acquires an optical interference tomographic image of the liquid landed on the medium, on basis of the coupled light. The output device outputs a characteristic value acquired on basis of the tomographic image. The characteristic value indicates an aggregation state of the liquid landed on the medium.