摘要:
Deteriorating developer including toner and carrier in a developer container is replaced by supplying carrier developer including carrier from a developer supply unit and discharging an amount of the deteriorated developer corresponding to the amount of the supplied carrier developer through a discharge opening formed in the developer container by opening a cover. The cover is driven by a solenoid for discharging. With this structure, even when the amount of developer in the developer container is changed and the surface level of the developer is changed, a predetermined amount of deteriorated developer is accurately discharged according to the driving of the cover. It is thus possible to control in a desired manner the replacement ratio of deteriorated developer in the developer container to new developer to be supplied. With this configuration, it is possible to maintain the charge of developer substantially uniform and good image quality of copies.
摘要:
The present invention provides in a preferred embodiment a developer container having a supply and discharge shaft which is driven and rotated in a direction by a supply and discharge shaft motor, a supply screw mounted on one of the ends of the supply and discharge shaft for bringing unused developer in a developer supply container into a developer container, and a discharge screw mounted on the other end of the supply and discharge shaft for discharging the developer in the developer container through a developer discharge opening. With this structure, the ratio of replacing old developer with new developer in the developer container is controlled in the desired manner, and the charging property of the developer is maintained substantially uniform. Additionally, since the replacement efficiency of the developer is improved, the consumption of the developer is reduced. Moreover, even when a copying machine is tilted, a large amount of developer is unlikely to be discharged.
摘要:
A developing device is provided with a developer vessel for storing therein a developer material composed of toner particles and carrier granules and a developer material supply section for gradually supplying a carrier developer including the carrier granules from above the developer vessel, wherein a discharge opening for discharging therethrough the developer material is formed on a side face of the developer vessel. When a tilt detection unit provided with the developing device detects the tilt of the developing device, an alarm lamp is set ON for sending a warning. In the meantime, the discharge opening is closed for preventing an excessive overflow of the developer material from the developer vessel.
摘要:
A developer device is provided with a developer vessel for storing therein a developer material composed of toner particles and carrier granules. In the developer device, a target ratio of toner particles for a detected quantity of the developer material is computed. In the device, a toner concentration detector sensor is also provided for detecting the ratio of toner particles in the developer vessel. In order to set the detected toner ratio of toner particles equal to the target ratio, quantity of toner particles to be additionally supplied to the developer vessel is controlled. As a result, the ratio of toner particles to the developer material stored in the developer vessel can be maintained in a predetermined ratio, thereby ensuring a desirable image quality.
摘要:
An image forming apparatus includes a photoreceptor formed by a transparent support member, a transparent conductive layer, an optical semiconductor layer, and an insulation layer stacked in this order, as well as developing units corresponding to black, yellow, magenta, and cyan provided at an outer periphery thereof. Exposure units corresponding to respective developing units are provided in the photoreceptor. Fixing units are arranged near respective developing devices at the outer periphery of the photoreceptor. Feeding units are provided for feeding a sheet A along the outer periphery of the photoreceptor from a paper feeding cassette to a first developing device and between the developing devices. Paper ejection units are provided corresponding to respective fixing units and sheet A is fed or ejected by switching the position of the fixing unit.
摘要:
A trimming apparatus, which carries out trimming with cutter blades running from one end of a material to be cut to the other end thereof, includes an apparatus frame, a bed surface having a bed plate for the material to be cut, a first and a second guide plates disposed in parallel above and under and holding the bed surface therebetween, a first holder member slidably supported by the first guide member and holding the first cutter blade, a second holder member slidably supported by the second guide member and holding the second cutter blade, a connector which connects one of the second cutter blade and the second holder member to the first cutter blade, and a drive device which makes at least one of the first holder member and the second holder member run from one end of the material to be cut to the other end.
摘要:
A medical treatment endoscope includes: an insertion portion which has a lumen formed along a longitudinal axis of the insertion portion and is configured to be inserted into a body cavity, a lateral opening portion which extends in a lateral surface of the insertion portion, from a distal end surface of the insertion portion to a proximal end side of the insertion portion, an elastic member which is provided in an inner wall of the lumen at a position separated from an edge of a proximal end of the insertion portion in a direction toward a distal end side of the insertion portion, and a tubular arm which includes a bendable bending part provided at a distal end side of the tubular arm.
摘要:
Provided is a medical treatment endoscope including: an endoscope main body which includes an elongated insertion portion having a lumen and an image capturing mechanism disposed in a distal end of the insertion portion; an arm which is able to be inserted into or extracted from the lumen and has a treatment tool lumen for allowing an endoscope treatment tool to be inserted therethrough; and a positioning mechanism which positions a part of the arm inserted through the lumen with respect to the endoscope main body.
摘要:
An ink jet printing apparatus and a print head recovery method are provided which effectively execute a preliminary ejection to eject ink not contributing to image printing from nozzle opening of the print head to maintain the ink ejection performance in good condition. The ink in the print head is heated to a first temperature, at which a first preliminary ejection is executed. Then, when the ink temperature falls to a second temperature, which is lower than the first temperature, a second preliminary ejection is executed.
摘要:
A dew formation testing device has an adjustment tank capable of adjusting the temperature and humidity of air to predetermined temperature and humidity, a testing tank installed separately from the adjustment tank and having a sample base that has a mounting surface, onto which a testing sample W can be placed, and that is capable to cool the mounting surface, and ducts that link the adjustment unit and the testing tank. The testing tank is provided with an air guide member that, when air flowing into the testing tank through the duct flows onto the sample base from a side of the sample base, guides the air in the direction tilted downward at a predetermined angle, the guidance being performed at a position right above the sample base at an end thereof which is on the upstream side of the air flow.