摘要:
A gradation pattern is printed, the gradation pattern is corrected with a gamma correction table TO based on a result in which the printed gradation pattern is read, the corrected gradation pattern is printed on a photosensitive drum or the like, and a measured density of the printed gradation pattern in S4 is stored as a reference value of density DR. Thereafter, without user's operation, at a set automatic timing, the read gradation pattern P is corrected with the gamma correction table TO and printed on the photosensitive drum or the like, density deviation ΔD between a measured density D of the printed gradation pattern in S6 and the reference value of density DR is determined, and the latest gamma correction table T is generated and updated on the basis of the density deviation ΔD. Consequently, high-quality image formation can be automatically performed.
摘要翻译:打印渐变图案,基于读取打印的渐变图案的结果,将校正的灰度图案印刷在感光鼓上或者将感光鼓打印到灰度校正表T O0 并且将S 4中的印刷灰度图案的测量密度存储为密度D R R的参考值。 此后,在没有用户操作的情况下,在设定的自动定时时,读取的灰度图案P用伽马校正表T O O 0进行校正并打印在感光鼓等上,测量密度之间的密度偏差ΔD 确定S 6中的印刷灰度图案的D和密度D 的参考值,并且基于密度偏差DeltaD生成和更新最新的伽马校正表T. 因此,可以自动执行高质量的图像形成。
摘要:
A gradation pattern is printed, the gradation pattern is corrected with a gamma correction table TO based on a result in which the printed gradation pattern is read, the corrected gradation pattern is printed on a photosensitive drum or the like, and a measured density of the printed gradation pattern in S4 is stored as a reference value of density DR. Thereafter, without user's operation, at a set automatic timing, the read gradation pattern P is corrected with the gamma correction table TO and printed on the photosensitive drum or the like, density deviation ΔD between a measured density D of the printed gradation pattern in S6 and the reference value of density DR is determined, and the latest gamma correction table T is generated and updated on the basis of the density deviation ΔD. Consequently, high-quality image formation can be automatically performed.
摘要:
A gradation pattern is printed, the gradation pattern is corrected with a gamma correction table TO based on a result in which the printed gradation pattern is read, the corrected gradation pattern is printed on a photosensitive drum or the like, and a measured density of the printed gradation pattern in S4 is stored as a reference value of density DR. Thereafter, without user's operation, at a set automatic timing, the read gradation pattern P is corrected with the gamma correction table TO and printed on the photosensitive drum or the like, density deviation ΔD between a measured density D of the printed gradation pattern in S6 and the reference value of density DR is determined, and the latest gamma correction table T is generated and updated on the basis of the density deviation ΔD. Consequently, high-quality image formation can be automatically performed.
摘要:
There is disclosed an image forming apparatus in which photosensitive member properties including potential properties of an exposed portion and unexposed portion of the surface of a photosensitive member irradiated with a light beam are estimated. An appropriate contrast potential and a developing bias voltage and charging grid bias voltage suitable for forming a high-density image are determined by a feedback control based on the photosensitive member properties. A laser power is changed to form an intermediate-density image whose density agrees with an intermediate-density target value. When the laser power is changed, the photosensitive member property changes. Therefore, the photosensitive member property is re-estimated, and the developing bias voltage and charging grid bias voltage are set again while maintaining the appropriate contrast potential.
摘要:
An image forming apparatus includes: a display section to display plural patterns having the same shape and different tints on the same screen; a selecting section which a user selects a desired pattern from the plural patterns displayed on the display section; a determining section which the user inputs a determination concerning whether the desired pattern selected with the selecting section is suitable; and a control section to set, according to the input to the determining section, a tint of a toner image formed by an image forming section.
摘要:
According to an embodiment of the present invention, color drift is prevented from occurring in a color image by detecting a position of a rotation informing mechanism integrally held by one of first, second, and third gears to detect a phase change in full rotation of at least one gear, detecting a position of a rotation informing mechanism integrally held by a fourth gear to detect a phase in full rotation, and setting, on the basis of the detected one phase change and the detected other phase change, phases during start of rotation of the respective gears such that a phase of a fourth image held by an image holding member rotated by the fourth gear coincides with phases of first to third images held by respective image holding members rotated by the first, second, and third gears.
摘要:
In a xerographic copying apparatus of the invention, a control unit to control a stepping motor to cause rotation of an image supporting body to synchronize with running of a transfer medium performs acceleration and deceleration of a rotation speed of the image supporting body while the image supporting body is rotating in a reverse rotation direction, and accordingly, paper powder or foreign matter accumulated in a cleaning mechanism to clean a developer on the image supporting body can be collected, the occurrence of abnormal noise is prevented, and a definite amount of reverse rotation of the image supporting body can be realized while avoiding damage of the image supporting body due to a speed difference between the image supporting body and the transfer medium.
摘要:
The density of an image read by a scanner unit 1 is recognized. A consumption of tonor required for development in each of development units 69y, 69m, 69c and 69k is detected according to the results of the recognition. The detected consumption is displayed on a liquid crystal display unit 44.
摘要:
According to an embodiment, an image processing apparatus includes an information adding unit, an execution determination unit, and an execution control unit. The information adding unit determines whether or not to store first information to which a predetermined value is added, in a storage unit, based on a result of analysis of image data, and adds the predetermined value to the first information and stores the first information in the storage unit in association with the image data when the determination is positive. The execution determination unit determines whether the first information with the predetermined value added thereto is in the storage unit or not. The execution control unit controls whether or not check of print quality is to be executed before the execution of print of the image data, based on the result of the determination by the execution determination unit.
摘要:
According to an embodiment, an image processing apparatus includes an information adding unit, an execution determination unit, and an execution control unit. The information adding unit determines whether or not to store first information to which a predetermined value is added, in a storage unit, based on a result of analysis of image data, and adds the predetermined value to the first information and stores the first information in the storage unit in association with the image data when the determination is positive. The execution determination unit determines whether the first information with the predetermined value added thereto is in the storage unit or not. The execution control unit controls whether or not check of print quality is to be executed before the execution of print of the image data, based on the result of the determination by the execution determination unit.