US 2009/0214220 A1Published application

Electronic device

AssigneeFUJIFILM Corporation

InventorsNaoyuki Nishino, Yasunori Ohta, Takeshi Misawa, Eiji Ishiyama, Atsushi Misawa

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Abstract

The main power source unit of an image read-out device supplies power to an laser diode (LD) power supply unit of an electronic cassette through a contact. The LD power supply unit supplies the supplied power to a laser diode (LD), as power used for emitting laser light, and also supplies a portion of the supplied power to an LD power supply unit of the image read-out device through a contact. The power supplied to the LD power supply unit of the image read-out device is supplied as power for emitting laser light to an LD of the image read-out device. When there is a change in the relative position of the casings of the electronic cassette and the image read-out device, the contact and electrical continuation of the contacts breaks and laser light stops being emitted from the LDs.

Claims8

Dependent claims

An electronic device having a first emission unit for emitting laser light and a first modulating unit for modulating the laser light emitted from the first emission unit according to transmission information, wherein the relative position of a casing of an opposing device and a casing of the electronic device are in an adjusted state to a communication enabled position in which the laser light emitted from the first emission unit is incident within a light receiving region of the opposing device, and the transmission information is received by a receiving unit of the opposing device by detecting the laser light incident in the light receiving region, and by demodulating the transmission information from the detection result of the laser light;

the electronic device comprising:
a first contact that contacts a second contact provided on the opposing device when the relative position of the casing of the opposing device and the casing of the electronic device is in the adjusted state to the communication enabled position;
and
a first electrical supply unit for supplying to the first emission unit as power for emitting the laser light power that has been supplied from the opposing device through the first contact in contact with the second contact.

1 more element

Dependencies are inferred from the claim text.