Citizen Holdings Company, Ltd.

Iomega Corporation

Akinobu Iwako

Makoto Yasunaga

Sadao Masubuchi

Akira Shiota

Shoji Takahashi

Katsutoshi Mukaijima

Masafumi Yokoyama

Maki Wakita

Tomoshige Inuyama

Katsuhiko Fujinuma

The invention is directed to the provision of an exposure apparatus in which is stored an electric current value appropriately determined for supply to a light-emitting device, and a method for producing such an exposure apparatus. The production method according to the invention comprises the steps of supplying a reference electric current to the light-emitting device, and measuring the amount of light from each of the plurality of pixels of the light modulating device, determining whether a minimum value among the amounts of light measured from the plurality of pixels lies within a predetermined range, and determining the value of the electric current to be supplied to the light-emitting device so that the minimum value of the amounts of light falls within the predetermined range when the minimum value of the amounts of light is outside the predetermined range.

Exposure system and production method for exposure system

The invention is directed to the provision of an exposure apparatus that can determine a correction value for each individual light-emitting part by employing a method that detects the amount of light corresponding to one particular light-emitting part from composite light containing light rays from adjacent light-emitting parts, and also to the provision of a method for producing such an exposure apparatus. The production method according to the invention comprises the steps of lighting a plurality of light-emitting parts at the same time, detecting an output light-amount distribution across all of the plurality of light-emitting parts by making measurements using a line-like light-receiving device, detecting a peak position corresponding to each light-emitting part by using the output light-amount distribution; detecting the amount of light of each light-emitting part based on the peak position, and determining, based on the amount of light of each light-emitting part, the correction value for correcting nonuniformity in the amount of light of the light-emitting part.

Method for determining a correction value for light-emitting parts in exposure apparatus

When a lower head ( ) mounted on a lower head arm ( ) is in a standby position permitting no access to a magnetic recording disk ( ), the lower head arm ( ) is housed in an opening ( ) formed in a frame plate ( ). Thus, the lower head arm ( ) and another (upper) head arm ( ) may maintain a predetermined distance even in a card-type magnetic recording device of small thickness. An electromagnetic shield material is adhered to the opening to protect the heads ( ).

Magnetic storage card

Growing community of inventors

Iruma, Japan

Akinobu Iwako