摘要:
A belt driving apparatus for carrying material to be recorded to a plurality of image recording units. In the belt driving apparatus, the distance of movement of material to be recorded corresponding to one rotation of the belt driving roller has been set to n (an integer)-times (where n=2, 3, 4 . . . ) as long as a distance between each image recording unit. A distance between one image recording unit and another recording unit is equal to or an integral fraction of .pi.(D+2 t), wherein D is the diameter of a drive roller driving the belt and t is the thickness of the belt.
摘要:
A developer supply device for supplying an image forming apparatus with a developer includes a developer accomodating container having an opening for supplying the developer, and a member for opening and closing the opening of the container. The developer accomodating container is slid to be positioned at a predetermined position. The direction of movement of the openable and closable member to open the opening coincides with the direction of the sliding movement for being positioned. A force needed for the movement of the openable and closable member is arranged to be larger than a force needed for the sliding movement of the developer accomodating container. The device also includes a regulating member, which prevents the developer accomodating container from being moved from the predetermined position when the openable and closable member is opened. In order to prevent mismounting of an improper developer accomodating container, engagement between the developer accomodating container and a mounting portion for the container is arranged to be different in accordance with the kind of the developer.
摘要:
An image recording apparatus for recording an image on a recording sheet, includes a recording section for recording an image on the recording sheet, a recording sheet holding section for holding the recording sheet, a conveying section for conveying the recording sheet held by the recording sheet holding section to a recording operation position by the recording section, a guide section for guiding the recording sheet to a convey path according to a size of the recording sheet subjected to the recording operation by the recording section, a first size recording sheet receiving section for receiving a first size recording sheet guided by the guide section, and a second size recording sheet receiving section for receiving a second size recording sheet different from the first size recording sheet and guided by the guide section.
摘要:
An ink jet printer comprises a wiper member for wiping the surface of the ink jet recording head. The ink jet recording head and the wiper member move in the same direction each other to wipe the surface of the ink jet recording head by one operation. In this way, the stabilized wiping is always possible to keep the head surface in an appropriate condition of ink discharges, hence obtaining images in beautiful print quality with the stable ink discharges.
摘要:
A printer having an ink container, an ink jet head, and an ink storage container for temporarily storing ink to be supplied from the ink container to the ink-jet head, the ink storage container having a closable air communicating portion communicating with ambient air. A first ink path connects the ink container to the ink storage container, defines a flow of ink from the ink container to the ink storage container, and is provided with a one-way flow restricting member for permitting only a flow of ink in a direction of discharge from the ink container. A second ink path connects the ink storage container to the ink container and defines a flow of ink for returning an excess amount of ink over a predetermined liquid amount in the ink storage container to the ink container. An opening/closing member opens and closes the air communicating portion to ambient air. A buffer container is provided at a portion of the first ink path between the one-way flow restricting member and the ink storage container and is capable of maintaining a predetermined liquid amount. A transfer member transfers ink from the buffer container and is provided at a portion of the first ink path between the buffer container and the ink storage container.
摘要:
A method for refilling liquid to a liquid supply path is provided with a sub-tank for supplying the liquid by retaining it temporarily and inducing the air outside into the sub-tank. This method includes the steps of making the sub-tank a closed space and filling the liquid while reducing pressure in the sub-tank. With the application of this method, liquid can be supplied stably. Also, by use of a pump serving as a device for generating negative pressure in the sub-tank, which can be installed on a path different from the liquid supply path, the structure of the liquid supply path becomes simpler to make it easier to avoid liquid leakage or other operational difficulties for the enhancement of a stabilized supply of liquid.
摘要:
An apparatus for performing the printing by scanning a carriage having a plurality of print heads mounted in a predetermined direction relative to the printing medium, so that an image is formed to have a desired color tone and density without decreased throughput. Conversion data for reproducing the color tone and the scan range of the carriage are changed in accordance with the used heads among the mounted heads. Also, the replaceability can be enhanced and the longer life for each group is attained by grouping the heads mounted. Further, the scan range of recording and the scan range for the recovery can be changed by selecting the group for use in accordance with the recording mode. Also, in an ink jet printing apparatus having a longer print length, a printing method for effecting the stable recording is provided.
摘要:
A method for refilling liquid using a refilling container is to refill liquid to a liquid reserving container, which is provided with a first chamber that houses a negative pressure generating member, at the same time, having an aperture conductively connected to the outside, and with a second chamber conductively connected with the first chamber through a communicating unit for forming essentially a closed space with the exception of the communicating unit. This method comprises the step of forming an essentially closed space from the atmospheric air by means of the second chamber and the refilling container with the exception of the communicating unit in a state where the liquid surface of the refilling container is positioned higher than the liquid surface of the second chamber, and the step of arranging the second chamber to be conductively connected with the refilling container by use of a first path that enables gas in the second chamber to communicate with gas in the refilling container, and a second path, which is different from the first path, arranged for shifting liquid in the refilling container into the second chamber. With the method thus arranged, liquid in the liquid refilling container is refilled into the liquid reserving chamber quickly and stably without leakage from the aperture arranged for the first chamber.
摘要:
The present invention provides a recording apparatus comprising a conveyor for conveying a sheet while contacting therewith, a recording device for recording an image by discharging ink onto the sheet conveyed by the conveyor, a cleaning device for sweeping the ink adhered to the conveyor by slidingly contacting therewith, and an absorbing member for absorbing the ink adhered to the conveyor.
摘要:
A transport device for use in a recording apparatus is disclosed. The transport device includes a conveyor belt having at least three layers. The upper layer of the belt is a conductive or semiconductive layer that is discriminable from a recording material by a detector. Below the first conductive or semiconductive layer is an insulating layer and below the insulating layer is a third conductive layer. The first layer has a volume resistivity value of from 10.sup.14 to 10.sup.17 .OMEGA.cm. The detectors are positioned upstream and downstream of the recording region and disposed downstream of that recording region is a cleaning blade and absorber which together work under control of a controller to clean ink from the conveyor before it soils the charging roller or the next recording sheet. The controller also controls the cleaning operation in accordance with the amount of ink that was unnecessarily jetted onto the conveyor belt.