摘要:
An image forming apparatus includes a transfer member configured to abut against an image carrier for carrying a toner image to form a transfer nip; and a power supply configured to output a bias voltage for transferring the toner image on the image carrier onto a recording medium nipped in the transfer nip. The bias voltage includes a first voltage for transferring the toner image from the image carrier onto the recording medium in a transfer direction and a second voltage having an opposite polarity of the first voltage, the first and the second voltages being alternately output. A time-averaged value of the bias voltage is set to a polarity in the transfer direction and is set in the transfer direction side with respect to a median between a maximum and a minimum of the bias voltage.
摘要:
According to an embodiment, provided is a transfer device including: a nip forming member that abuts against a surface of an image carrier carrying a toner image; and a transfer voltage application unit that applies a transfer voltage including a DC component and an AC component. The transfer voltage is an alternating voltage in which a supply voltage having polarity in a transfer direction and a return voltage having polarity opposite. A time average value Vave of the transfer voltage is set to be at polarity in the transfer direction and is set to be closer to a peak value Vt of the supply voltage relative to a center value Voff between a maximum and minimum value. An absolute value of the peak value Vr of the return voltage is set to be larger than an absolute value of the time average value Vave.
摘要:
An image forming apparatus includes a transfer bias generator including a transfer bias supply that supplies a transfer bias to a transfer nip formed between an image carrier and a first rotary body, and a controller that detects a toner adhesion amount at a predetermined region of the image carrier located immediately upstream from the transfer nip and having a predetermined length in a moving direction of the image carrier. The transfer bias generator outputs at least an alternating current component under one of constant voltage control and constant current control and changes a target output value of the alternating current component according to the toner adhesion amount detected by the controller.
摘要:
A transfer device includes an image carrier that carries a toner image; a nip forming member that forms a transfer nip between the nip forming member and the image carrier by contacting with a front surface of the image carrier; and a transfer bias applying unit that applies a transfer bias, thereby transferring the toner image carried on the image carrier to a recording material at a position of the transfer nip. The transfer bias applying unit applies the transfer bias in which an AC component and a DC component are superimposed and in which a peak-to-peak voltage of the AC component is larger than 6 times an absolute value of a voltage of the DC component.
摘要:
An image forming apparatus includes an image bearer to bear a toner image, a toner image forming device to form the toner image on the image bearer, a nip forming device to contact the image bearer to form a transfer nip between the image bearer and the nip forming device, a transfer bias output device to output a transfer bias including a DC component and an AC component to transfer the toner image from the image bearer onto a recording medium interposed in the transfer nip, and a controller operatively connected to the transfer bias output device to adjust a frequency f of the AC component of the transfer bias in accordance with an image area ratio A such that the frequency f is at its minimum with a predetermined image area ratio Amin %, where Amin % is greater than 0 but lower than an image area ratio of a solid image.
摘要:
A display device includes: a receiving unit configured to receive first image data from an external device coupled via a network; a determining unit configured to determine, based on a size of an image represented by the first image data received by the receiving unit, whether the first image data is able to be reproduced in a display region of the display device; a generating unit configured to generate, based on the first image data, second image data representing an image in a size that conforms with a size of the display region, in response to a determination that the first image data is not able to be reproduced in the display region; a storing unit configured to store the second image data generated by the generating unit; and a display unit configured to reproduce, on the display device, the second image data generated by the generating unit.
摘要:
An information processing device can receive a positioning signal that is transmitted from a transmitting device. The information processing device includes an input reception unit for receiving an input of a destination and for identifying first location information including first floor number information, the first floor number information indicating a floor number of the destination in a structure including the destination, a retrieval unit for retrieving second location information including second floor number information from the positioning signal, the second floor number information indicating a floor number on which the transmitting device is provided in a structure in which the transmitting device is provided, and a calculation unit for calculating a route from a current location of the information processing device to the destination by using the first location information and the second location information.
摘要:
A communication terminal, a communication method, and a communication terminal control program stored in a non-transitory recording medium, each of which receives, from a first transmission device, first location data indicating a location at which the first transmission device is located, and transmits the first location data and terminal identification data that identifies the communication terminal, to a second transmission device, which is a separate device from the first transmission device.
摘要:
An electronic apparatus, includes: a housing including a metallic outer wall part on which an insertion hole to a plug electrode part of a power plug being inserted is formed; a power connector which is stored in the housing and coupled to the plug electrode part inserted into the housing through the insertion hole; and an insulating stopper part which includes a facing surface facing an outer circumference surface of the plug electrode part with a gap, which is smaller than the gap between the outer circumference surface of the plug electrode part and an inner circumference surface of the insertion hole, and which is allocated between the outer wall part and the power connector.
摘要:
An image processing apparatus includes a binarizing unit, a determining unit, a counting unit, and a correcting unit. The binarizing unit binarizes image data based on density of the image data. The determining unit determines a pixel with high density as a character pixel and a pixel with low density as a non-character pixel in the binarized image data. The counting unit counts the number of a sequence of character pixels in a scanning direction. The correcting unit corrects, when the number of the sequence of the character pixels exceeds a threshold value, the character pixels to non-character pixels.