摘要:
A developer density controlling apparatus includes image density detecting device for detecting a target density on the basis of a detected image and, if a difference between a toner density detected by a developer density detecting device and the target density is equal to or greater than a predetermined value, the image density detecting device does not correct the target density.
摘要:
When the structure is arranged such that one of the repulsion poles is used as a developer layer thickness regulation pole, screw pitch-shaped density unevenness occurred at the rear end of a solid black image. To provide a developing apparatus, comprising a developing container containing developer including magnetic carrier and non-magnetic toner, a developer bearing body provided at an opening of the developer container, for rotating while bearing the developer, a magnet member provided within the developer bearing body, the magnet member having a first magnetic pole, and a second magnetic pole adjacent on the downstream side of the developer bearing body of the first magnetic pole in a direction of rotation thereof, having a second magnetic pole having the same polarity as the first magnetic pole, a regulating member provided in the vicinity of the second magnetic pole, for regulating an amount of developer on the developer bearing body, in which between the first magnetic pole and the second magnetic pole, there exists 40° or more an area having 8 mT or less in magnetic flux density in the direction of the normal to the surface of the developer bearing body.
摘要:
A developing apparatus includes a developer bearing member, a first magnetic pole and a second magnetic pole of a same polarity as that of the first magnetic pole, and a regulating member. A regulating portion of the regulating member is provided within a range from a point of the maximum magnetic flux density of the second magnetic pole and an angular point corresponding to a half of the half value width of the second magnetic pole at the downstream side in the rotating direction of the developer bearing member.
摘要:
The present invention concerns controlling a potential used to form an electrostatic image for image formation. According to the invention, an electrostatic latent image is formed on an image bearing member using, for example, a potential stored in a memory. The potential of the latent image is detected, and if the potential is not within a specified range, the potential is controlled (i.e., changed) to form another latent image with the changed potential. The latent image is then developed and the density of the developed image detected. In one embodiment, the amount of developer to be replenished is then controlled based upon the detected density and a target potential value, where the target potential value is determined and set based on the detected density and the potential used in the potential controlling step. In a related embodiment, when a result of the potential obtained after termination of a normal image formation process is out of a designated range, potential control is performed after termination of a next normal image formation process.
摘要:
The present invention concerns controlling a potential used to form an electrostatic image for image formation. According to the invention, an electrostatic latent image is formed on an image bearing member using, for example, a potential stored in a memory. The potential of the latent image is detected, and if the potential is not within a specified range, the potential is controlled (i.e., changed) to form another latent image with the changed potential. The latent image is then developed and the density of the developed image detected. In one embodiment, the amount of developer to be replenished is then controlled based upon the detected density and a target potential value, where the target potential value is determined and set based on the detected density and the potential used in the potential controlling step. In a related embodiment, when a result of the potential obtained after termination of a normal image formation process is out of a designated range, potential control is performed after termination of a next normal image formation process.
摘要:
A developing apparatus has a developer carrying body provided to face an image bearing body. The developer carrying body carries and conveys a developer having toner and carrier to a developing region. A bias applying device applies a developing bias to the developer carrying body, wherein the bias applying device applies to the developer carrying body the developing bias having periodically a voltage portion having alternately a first voltage to generate an electric field to direct toner from the developer carrying body to the image bearing body and a second voltage to generate an electric field to direct the toner from the image bearing body to the developer carrying body and a pause portion to pause applying the alternate voltage, wherein T1 and T2 have a relationship of T1>T2, where T1 is as an applying time period of the first voltage and T2 is an applying time period of the second voltage.
摘要:
There is provided a composition for forming a monolayer or a multilayer on the substrate. A composition for forming a monolayer or a multilayer containing a silane compound of Formula (1A) or Formula (1B): [where R1s are independently a methyl group or an ethyl group; Xs are independently a C1-10 linking group; and Zs are independently a C1-10 alkyl group or a phenyl group optionally having a substituent, where X optionally contains at least one oxygen atom or sulfur atom in the main chain thereof, and when Z is an alkyl group, at least one hydrogen atom of the alkyl group is optionally substituted with a fluorine atom] and an organic solvent.
摘要:
There is provided an anti-reflective coating forming composition for use in a lithography and for forming an anti-reflective coating that can be developed with an alkaline developer for photoresist, and a method for forming photoresist pattern by use of the anti-reflective coating forming composition. Concretely, the composition comprises a polyamic acid produced from a tetracarboxylic dianhydride compound and a diamine compound having at least one carboxyl group, a compound having at least two epoxy groups, and a solvent.
摘要:
There is provided an anti-reflective coating forming composition for lithography comprising a polymer compound, a crosslinking compound, a crosslinking catalyst, a sulfonate compound and a solvent. The anti-reflective coating obtained from the composition has a high preventive effect for reflected light, causes no intermixing with photoresists, has a higher dry etching rate compared with photoresists, can form a photoresist pattern having no footing at the lower part, and can use in lithography process by use of a light such as ArF excimer laser beam and F2 excimer laser beam, etc.
摘要:
[Problem to be Solved] To provide a digital information carrier which enables blending of cluster information carrier comprising of image objects joined together to other viewable content (a character, an image, background, etc.) of a document, to seamlessly unify a printed document and an electronic document when accessing the cluster information carrier by an image recognition means, such as partial scanning, and to perform a method for finding positional information and processing commutative with the written contents of the document without incorrect recognition at high speed and a method for recognition. [Solution Means] A digital information carrier comprising of a plurality of image objects as constituent elements, containing a cluster information carrier constituted by at least two image objects, and having bit data correlated to the relative relationship of at least two image objects concerned serving as configuration elements were used. In addition judgment conditions of whether the two image objects concerned serving as configuration elements constitute a cluster information carrier were correlated to the above-mentioned cluster information carrier. Furthermore, configuration of a logical block obtained by unifying a plurality of unit information carriers which are the minimum units at the time of decoding bit data from a digital information carrier was realized, and configuration of a new logical block was enabled by replacing at least one of the configuration elements of the concerned logical block with the above-mentioned unit information carrier adjacent to the logical block concerned.