公开(公告)号：US20240380122A1

公开(公告)日：2024-11-14

申请号：US18779784

申请日：2024-07-22

Applicant: FUJIFILM Corporation

Inventor： Hirokazu HASHIMOTO

IPC: H01Q17/00

Abstract: The radio wave absorber contains a magnetic powder and a binder, in which an inclination of a peak frequency with respect to a temperature is 40.0 MHz/° C. or less.

公开(公告)号：US20230139287A1

公开(公告)日：2023-05-04

申请号：US18145384

申请日：2022-12-22

Applicant: FUJIFILM Corporation

Inventor： Kiyotaka FUKAGAWA ,  Hirokazu HASHIMOTO

IPC: H01Q17/00 ,  C08K3/22 ,  H01F1/34

Abstract: There is provided a radio wave absorber containing a magnetic powder, and an aliphatic polyamide, in which an intensity ratio (α/γ) of a diffraction intensity α of an α crystal of the aliphatic polyamide to a diffraction intensity γ of a γ crystal of the aliphatic polyamide, which are determined by subjecting the radio wave absorber to measurement with an X-ray diffraction method, is 2.60 or less. There is also provided a radio wave absorbing article including this radio wave absorber.

公开(公告)号：US20210166850A1

公开(公告)日：2021-06-03

申请号：US17176279

申请日：2021-02-16

Applicant: FUJIFILM Corporation

Inventor： Hirokazu HASHIMOTO

IPC: H01F1/34 ,  H05K9/00

Abstract: A method for producing a powder of a magnetoplumbite-type hexagonal ferrite which is an aggregate of particles of a compound represented by Formula (1), the method including: a step A of adjusting a pH of an aqueous solution containing a Fe salt, an Al salt, and at least one metal element salt selected from the group consisting of a Sr salt, a Ba salt, a Ca salt, and a Pb salt to exceed 8.0, thereby obtaining a reaction product; a step B of drying the reaction product obtained in the step A, thereby obtaining a dried product; and a step C of firing the dried product obtained in Step B, thereby obtaining a fired product, and application. In Formula (1), A represents at least one metal element selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 1.5≤x≤8.0. AFe(12−x)AlxO19   Formula (1)

公开(公告)号：US20180314442A1

公开(公告)日：2018-11-01

申请号：US15954628

申请日：2018-04-17

Applicant: FUJIFILM CORPORATION

Inventor： Naoaki TOKAI ,  Hirokazu HASHIMOTO ,  Yosuke SUMIYA

IPC: G06F3/06

Abstract: A recording control device and a recording control method capable of reducing an error rate of reading or writing of data from or to a recording tape included in a recording tape cartridge are obtained.A recording control device reads tape quality information recorded on an RFID tag included in a recording tape cartridge, acquires drive quality information indicating quality of each of a plurality of tape drives that are loading targets of the recording tape cartridge, and prohibits reading or writing of data from or to the recording tape using the tape drive in a combination of which the quality is lower than predetermined quality among combinations of quality of the recording tape cartridge indicated by the read tape quality information and quality of each of the plurality of tape drives indicated by the acquired drive quality information.