Title:
媒体速度検出装置及び印刷装置
Document Type and Number:
Japanese Patent JP6555021
Kind Code:
B2
Abstract:
A medium speed detection device (30) includes a radiation optical system (310) that radiates non-coherent light to a sheet-shaped medium (95) which is being transported; a linear light reception optical system (320) that includes n light reception units (328) where n is an integer equal to or greater than 2) receiving diffused/reflected light of the non-coherent light from the medium through light reception surfaces and in which the n light reception surfaces (322r) are arranged on an imaginary straight line in a transport direction of the medium; and a speed detection unit (340) that obtains a speed of the medium based on a delay time obtained from a temporal correlation between an output of preceding light reception units (328f) with preceding light reception surfaces (322ef) disposed on an upstream side in the transport direction and an output of following light reception units (328p) with following light reception surfaces (322rp) disposed on a downstream side among the n light reception units.
Inventors:
大▲塚▼ 修司
Application Number:
JP2015171826A
Publication Date:
August 07, 2019
Filing Date:
September 01, 2015
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G01P3/80; B41J29/38; B65H7/14; G01P3/68
Domestic Patent References:
| JP201564324A | ||||
| JP677025B2 | ||||
| JP2003215143A | ||||
| JP454892B2 |
Foreign References:
| US3804518 |
Attorney, Agent or Firm:
Meisei International Patent Office