摘要:
An image forming apparatus is disclosed. In at least one embodiment, the apparatus includes a plurality of image carriers to carry an image; a plurality of drivers to drive the image carriers; a plurality of drive-force transmitting members to transmit a driving-force from the drivers to image carriers; a developing unit, provided to the image carriers, to develop the image; a transfer member, facing the image carriers, to receive the image from the image carriers sequentially; an image detector to detect the image on the transfer member to check a detection timing of the image; a sensor, provided to each of the image carriers, to detect a rotational speed of image carriers; and a controller to conduct an image-to-image displacement control, a speed-deviation checking, and a phase adjustment control for each of the plurality of image carriers with the image detector and sensor.
摘要:
A color deviation detection device for a color image forming device which prevents the occurrence of color deviation that is attributable to the fact that the precision of color deviation detection is low, the replacement of photosensitive bodies or developing devices is itself a cause of fluctuation in the color deviation, and the precision of the part before and after replacement is slightly different. In the color deviation detection device, the spacing between marks of the reference color and other colors, the spacing between marks of the same color and the spacing between mark sets are set as the spacing between marks within the mark sets and the spacing between mark sets, so that when the amount of color deviation is calculated for a synthesized wave comprising two or more driving irregularity frequencies that are generated by the image carrying body driving system and the transfer driving system, the calculation error caused by this synthesized wave is within a range that allows correction of the deviation of the image of a plurality of colors.
摘要:
Provided is a thermoplastic resin structure formed of a resin composition that comprises substantially (a) from 5 to 80% by volume of a polyolefin resin and (b) from 20 to 95% by volume of a polyphenylene sulfide resin, which is characterized in that, in morphology therein seen through electronicmicroscopy, the polyphenylene sulfide resin (b) forms a matrix phase (continuous phase) and the polyolefin resin (a) forms a disperse phase. The thermoplastic resin structure gives plastic containers, tubes and their Attached parts having good barrier properties, strength, durability and workability.
摘要:
A belt driving control apparatus, the belt driving control apparatus having an endless belt, a driving roller driving the endless belt, a driving motor driving the driving roller, at least one idler roller being dependent on the endless belt, and an encoder attached to one of the idler roller, the belt driving control apparatus includes a structure where a control target value of the driving motor is set so that an effective speed of the endless belt is constant and the driving motor is drive-controlled so that the control target value is satisfied.
摘要:
An endless belt is spanned around at least one driving member and at least one supporting member. The driving member is driven by a pulse motor. An angular displacement of the driving member is detected, a difference between detected angular displacement and a target angular displacement is calculated, a frequency of a driving pulse used to drive the pulse motor is calculated based on the difference and a reference driving pulse frequency, and the pulse motor is controlled based on a driving pulse with calculated frequency. The target angular displacement is set so as to cancel a specific velocity fluctuation component of a surface velocity of the belt produced when the drive member is rotated at a constant angular velocity and that is smaller than amount of surface movement of the belt in one driving pulse.
摘要:
An image forming apparatus in which the rotational speed of register rollers is calculated at first to fourth stations at a transfer belt drive system, and transfer feedback control for varying the speed of a transfer drive motor is carried out on the transfer drive motor so that the speed of movement of a transfer belt is maintained at a predetermined value. The transfer feedback control is carried out on the image forming apparatus so as to vary the speed of the transfer drive motor so that the speed of movement of the transfer belt is maintained at a predetermined value or so as not to vary the speed of the transfer drive motor as a result of not carrying out the transfer feedback control.
摘要:
The present invention aims at providing a device and method for writing a line with a high degree of precision at high speed. Distance calculation means 311 calculates the start-to-end point distance L of a writing pattern (S502), and number-of-scan-clocks calculating means 312 calculates the number of scan clocks required to write the writing pattern based on the start-to-end point distance L and a unit distance corresponding to the minimum time resolution for a high-speed D/A converter 306 (S503). Count conversion means 605 separates the start-to-end point distance L into X and Y components to convert them in an equation using the number of scan clocks (S504). Based on the equation, variable rate calculating means 314 calculates an extinction ratio to determine the extinction ratio at a variable attenuator 307 (S505). ATT D/A converter 303 specifies the extinction ratio at the attenuator 307 to reduce the unit distance corresponding to the resolving power of the high-speed D/A converter 306 so that an electron beam will be irradiated and scanned at intervals of the reduced unit distance to perform writing.
摘要翻译:本发明旨在提供一种以高速度高精度地写入线的装置和方法。 距离计算装置311计算写入模式的起始点到终点距离L(S 502),并且扫描时间计算装置312基于开始计算写入写入模式所需的扫描时钟数 到端点距离L和对应于高速D / A转换器306的最小时间分辨率的单位距离(S 503)。 计数转换装置605将起始点到终点距离L分离为X和Y分量,以使用扫描时钟数在等式中转换它们(S 504)。 基于该方程,可变速率计算装置314计算消光比以确定可变衰减器307处的消光比(S 505)。 ATT D / A转换器303指定衰减器307处的消光比,以减小对应于高速D / A转换器306的分辨率的单位距离,使得将电子束以缩小单位的间隔照射和扫描 执行写作的距离
摘要:
A color image forming apparatus including a plurality of photosensitive drums on which toner images of different colors are respectively formed. An endless belt confronts the plurality of photosensitive drums. A drive source drives rotation of the endless belt, or alternatively plural drive sources drive the photosensitive drums to individually rotate. A memory stores pre-measured characteristics of a color misregistration of a color image in a sub-scanning direction of the apparatus, the color image formed by transferring images from respective of the plurality of photosensitive drums. Further, a control unit changes an average running speed of the endless belt, or alternatively an average running speed of at least some of the photosensitive drums, by controlling the drive sources, to compensate for color misregistration, based on the stored characteristics of color misregistration. The belt can either transport a paper sheet or have a color image formed thereon as an intermediate transfer device.
摘要:
A drive control method includes detecting an angular displacement of a rotor driven by a pulse motor, calculating a difference between the detected angular displacement and a preset target value of the angular displacement, and calculating a drive pulse frequency of a drive pulse signal used to drive the pulse motor. The pulse motor is driven by the drive pulse signal having the drive pulse frequency to allow the rotor at a constant angular velocity.
摘要:
Provided is a thermoplastic resin structure formed of a resin composition that comprises substantially (a) from 5 to 80% by volume of a polyolefin resin and (b) from 20 to 95% by volume of a polyphenylene sulfide resin, which is characterized in that, in morphology therein seen through electronicmicroscopy, the polyphenylene sulfide resin (b) forms a matrix phase (continuous phase) and the polyolefin resin (a) forms a disperse phase. The thermoplastic resin structure gives plastic containers, tubes and their Attached parts having good barrier properties, strength, durability and workability.