Mita Industrial Co., Ltd.

Tadashi Umeda

Hideo Miyoshi

Takashi Aoki

Kazunori Akiyama

Kazumi Iida

Keiichi Kishimoto

Yosuke Ohata

Keiichiro Hyodo

Tatsuo Aizawa

Masahiro Murakami

Masanobu Maeshima

Yuji Abe

Shinobu Satonaka

Jun Miyoshi

Tetsuya Kagawa

Hiromi Okada

Naoki Nakashima

Yusuke Morikawa

Tadashi Kobata

Tetsuya Okada

Masato Taniguchi

Tetuya Okada

An area setting device for setting coordinates of two points in a diagonal direction in one or more areas to be copied by a photocopier utilizing key operation in sequence, in which different colors are used for coordinate display in each direction. The same colors as the coordinate displays are used for coordinate input indicators. All the points are memorized as to whether coordinates have been applied. A key input is accepted for the first point not having coordinates applied, and this converts the memorized condition. Key input acceptance and memory state conversion are repeated for all the points required.

Area setting device

An electrostatic copying apparatus includes a lower supporting frame, an upper supporting frame mounted on the lower supporting frame for pivotal movement between an open position and a closed position, a document placing assembly having a transparent plate for placing a document to be copied thereon, an optical unit and a driving source. Either the document placing assembly or at least a part of the optical unit is mounted reciprocally on the upper supporting frame and drivingly coupled to the driving source via a power transmission mechanism. The apparatus further includes an automatic locking device for automatically locking the document placing assembly or at least a part of the optical unit and cancelling the locking according to an operation of moving the upper supporting frame to an open or closed position or an operation incident to this moving operation.

Electrostatic copying apparatus

An electrostatic copying apparatus comprising a lower supporting frame, an upper supporting frame mounted on the lower supporting frame for pivotal movement between an open position and a closed position, a document placing means having a transparent plate for placing a document to be copied thereon, an optical unit and a driving source. Either the document placing means or at least a part of the optical unit is mounted reciprocally on the upper supporting frame and drivingly coupled to the driving source via a power transmission mechanism. The apparatus further includes an automatic locking means for automatically locking the document placing means or at least a part of the optical unit and cancelling the locking according to an operation of moving the upper supporting frame to an open or closed position or an operation incident to this moving operation.

A display for a copying apparatus includes a display element for indicating the operating conditions of the copying apparatus. The display has a number of detectors for detecting each of a group of operating conditions and an energizer for energizing the display element in response to the outputs from the detectors. The display element operates with a predetermined on-period and a predetermined off-period for each corresponding detector. The display is capable of displaying a group of operating conditions by a single display element through a group of display conditions such as being on, being off and blinking.

Display device for copying apparatus

An electrostatic copying apparatus includes a paper jam detector for producing a jamming signal in response to detection of a paper jam, an emergency stopping device for stopping the copying process in response to the paper jamming signal, and a manually operable release switch for actuation after the paper jam has been cleared to release the stopping action of the emergency stopping means. A preparatory driving device, responsive to the releasing of the stopping action of the emergency stopping device by the operation of the release switch, energizes the main motor of the copying apparatus to move the photosensitive member of the apparatus through at least one rotation. A cleaning device, also responsive to releasing of the stopping action of the emergency stopping device by the operation of the release switch, cleans the photosensitive member during that rotation to assure that the photosensitive member is clean after the jam is cleared and before the next copying cycle.

A support mount for the rotary drum of an electrostatic copying apparatus. A pair of guide and support members is positioned within the copier housing, spaced from each other a predetermined distance in the direction of the central axis of the drum. Each guide and support member has a shaft support opening with a recess extending substantially perpendicular to the drum axis and a main guide surface extending from the lower end of the recess away from the shaft support opening and substantially perpendicular to the drum axis. When the peripheral surfaces of the drum bearing members are moved along the main guide surfaces, each bearing member passes through the respective recess and is positioned within the respective support opening. A pair of projecting pieces are positioned at the side plates of a frame of the copying apparatus developing device. After positioning of the drum bearing member in the shaft support opening, the free ends of the projecting pieces abut the peripheral surface of the bearing members to fix the frame within the house.

Mount for rotary drum in an electrostatic copying apparatus

An electrostatic copying apparatus including detecting means for detecting the longitudinal size of the copying paper and a control means for operating the charging corona-discharge device only for a time period corresponding to the detected longitudinal size of the copying paper.

Electrostatic copying apparatus with cooling system

Electrostatic copying apparatus with sheet feeder

An electrostatic copying apparatus including means for developing the latent image on the photosensitive member with toner particles which are supplied from a container having a slide plate that reciprocates along the bottom of one wall of the toner container. A detecting device is connected to a feed control system and a warning device to control tones dispensing and warm of imperfect feeding.

Toner dispenser and detector for an electrostatic copying apparatus

An electrostatic copying apparatus including detecting means for detecting the longitudinal size of the copying paper unit and a control means for operating the charging corona-discharge device only for a time period corresponding to the detected longitudinal size of the copying paper.

A switch device for an electrostatic photographic copying machine having a reciprocally movable member reciprocating from a rest position and returning thereto during each copying operation of the copying machine, and a drive driving the movable member. The switch device has an actuating member movable relative to the copying machine body and is toward a non-operating position. An operating member engages with the actuating member for moving it to an operating position. A retaining device engages the actuating member for holding the actuating member in the operating position after it has been moved to the operating position. A switch actuating the drive for the movable member is engageable by the actuating member for actuating the drive means when the movable member is in the operating position and actuating the switch for deactuating the drive when the movable member is in the non-operating position. A protuberant member movable with the reciprocally movable member engages the retaining device just prior to the return of the reciprocally movable member to the rest position after a reciprocating movement thereof for disengaging the retaining device from the actuating member, whereby when the retaining means is disengaged the actuating member is free to be moved to the non-operating position for actuating the switch for deactuating the drive.

Switch device in electrostatic photographic copying machine

A method of and apparatus for synchronously transferring an original and a sheet of copying paper for electrostatic photoduplication. A paper feeding device feeds the sheets of copying paper one at a time until the front edge reaches a predetermined position at a front edge stop. The sheet of copying paper is held at the predetermined position on standby for a period of time, and then a paper transfer device transfers it to move the front edge to an exposure point. At the same time an original placed on a mount is moved from a stopping point in the cycle of movement of the mount to a position in which the leading edge of the original is at an irradiation point optically aligned with the exposure point. The period of time during which the copying paper is fed from the supply, held in the predetermined position, and then moved to the exposure position is equal to the time for moving the mount for the original from a predetermined point along the path of movement of the mount to the irradiation point. Thereafter, the original is moved past the irradiation point synchronously with transfer of the copying paper past the exposure point at a predetermined rate for exposing the copying paper to the image from the original.

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Yamato Takada, Japan

Tadashi Umeda