Sharp Kabushiki Kaisha Corporation

Mikio Osaki

Hiroshi Kamada

Toshiaki Tabuchi

Hitoshi Suzuki

Yoichi Shimazawa

Sumio Kita

Mitsuhiro Hakaridani

Kohichi Kakimoto

An ink liquid supply system for an ink jet system printer includes a constant flow rate pump and a pressure accumulator for removing a pressure pulsation or ripple created by the constant flow rate pump. In order to stabilize the constant flow rate operation and to shorten the preparation period of the system when the system operation is started, a temperature compensation or sensitive system is provided for varying the ink liquid pressure within the pressure accumulator. The temperature compensation system includes a bimetal element for varying the pressure to be applied to a resilient member included in the pressure accumulator. The pressure adjusting operation is continuously conducted even when the ink jet system printer does not operate.

Ink liquid supply system which compensates for temperature variation

A charge condition detection system is provided in an ink jet system printer of the charge amplitude controlling type in order to synchronize the application of the charging signal with the droplet formation timing. The charge condition detection system includes a metal member physically connected to the ink liquid to be supplied to an ink droplet issuance unit, and a capacitor electrically connected to the metal member. When the ink droplet is properly charged, the charge amount corresponding to the charge carried by the ink droplet is accumulated on the capacitor. By measuring the voltage appearing across the capacitor, the charge condition of the ink droplet is detected.

Droplet charge condition detection in an ink jet system printer of the

In an improved system for loading new microfiches, or updating previously stored microfiches, in a microfilm cassette library; a registration mode is provided whereby a keyboard operator can register keyword a and other index information for specific frames while these microimages are concurrently being projected on a viewing screen. Structures are included for receivingand holding fiches or cassettes being registered, for positioning frames for optical projection, and for reading magnetically encoded fiche identity data. Both buffer memory and file memory means are provided for storage of frame address information including cartridge identity, microfiche identity, X and Y axes coordinates, and other index data. Microcomputer means are provided for overall control of the registration of new fiches and for retrieval of same.

Microimage registration system for loading and/or updating microfiches

A multi-item input/output display device is disclosed which includes a sheet bearing a plurality of markings indicative of respective items, a display matrix array provided for respective ones of the item markings on the sheet, a scanner for sequentially scanning those display elements in the array and a light pen carrying a light sensor and adapted to develop a code signal indicative of a specific selected item when the specific item is illustrated with the light pen, the code signal applied from outside being displayed by those display elements.

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Kashihara, Japan

Mikio Osaki