Konica Minolta Business Technologies, Inc.

Takao Miyamoto

Noboru Oomoto

Shoichi Yoshikawa

So Yano

Naotoshi Kawai

Yoshiyuki Toso

Naoki Miyagawa

A gloss measuring device that measures a gloss of an image formed on a sheet which is being transported, the gloss measuring device includes a light emission portion that emits light toward the sheet, a light reception portion that receives the light reflected specularly off the image formed on the sheet, and a position adjustment unit that performs adjustment such that the sheet being transported is in a measurement reference position.

Gloss measuring device and image forming device including same

A plurality of first viscoelastic bodies are disposed in insertion holes of a first rotary member. A plurality of second viscoelastic bodies are disposed in guide holes of a second rotary member. Each of the first and the second viscoelastic bodies has an elastic coefficient changing in accordance with aging due to use. A guide member moves a contact member along the insertion hole and the guide hole. The contact member applies a compressive load to the first viscoelastic body. The aging of the second viscoelastic body due to the compressive load applied thereto moves a position of the first viscoelastic body where the compressive load is received from the contact member toward a farther side from a rotational shaft side.

Rotary damper and image forming apparatus

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Nagoya, Japan

Takao Miyamoto