摘要:
According to an embodiment of the invention, degradation of carrier in a case is detected from the number of rotations of a developing roller. A predetermined quantity of carrier is replenished every time the developing roller reaches a predetermined number of rotations. An excess developer caused by an increase in bulk through carrier replenishment is discharged from a developer discharge port. The degraded old carrier in the case is replaced by new carrier little by little.
摘要:
A image forming apparatus comprising a cleaning blade for cleaning a conveying belt or an intermediate transfer body, and a lubricating agent coating mechanism for coating a lubricating agent on the surface of the conveying belt or the intermediate transfer body, wherein detection is made whether a conveying belt, an intermediate transfer body belt or a cleaning blade is a new article, and the lubricating agent coating mechanism is operated to coat the lubricating agent on the surface of the conveying belt or the intermediate transfer body. Further, detection is made of installation temperature and humidity of the image forming apparatus, and in case of under-prescribed environments, the lubricating agent coating mechanism is operated to coat the lubricating agent on the surface of the conveying belt or the intermediate transfer body. Thereby, the cleaning performance is improved, and the blade burring is prevented.
摘要:
A developing device includes a developer tank configured to contain a developer including a toner and a carrier, the developer tank having a discharge port which is provided in a lateral side surface of the developer tank and configured to discharge the developer, a developing agent supplier configured to develop a latent image by using the toner contained in the developer tank, and a plate-shaped member configured to be formed in a direction of height from a lower end of the discharge port and partially cover the discharge port to regulate the discharge of the developer.
摘要:
In an embodiment, a contact pivoting plate, which comes into contact with a developer swelled by a discharge mixer, is provided in a case. The contact pivoting plate is pivoted according to a detection result of a temperature and humidity sensor to change the magnitude of resistance by the contact pivoting plate with respect to a flow of the developer. The height of the swell of the developer is suppressed from fluctuating according to an environmental change. The fluctuation in an amount of an excess developer discharged from a discharge port is suppressed to replace a deteriorated carrier in a development container with a new carrier little by little.
摘要:
The present invention provides a technique to accurately grasp a deterioration state of a development agent in a development device, in a development system which supplies a new development agent consisting of a toner and a carrier and discharges an deteriorated development agent to maintain a performance of a development agent in a development device.An image forming apparatus according to the present invention includes a stirring information obtaining section configured to obtain information of a stirring time of the development agent in the development device, a supply information obtaining section configured to obtain information of an amount of the carrier supplied into the development device, and a deterioration degree determining section configured to determine a deterioration degree of the development agent in the development device on the basis of the information obtained by the stirring information obtaining section and the supply information obtaining section.
摘要:
A developing device that enables stable discharge of a developer from a developer discharge port, and an image forming apparatus having this developing device are provided.A developing device in which a developer is supplied to a developing roller and the developer is carried while it is stirred, includes: a developer passage through which the developer can be carried; a carrying member which is provided in the developer passage and has a rotary shaft and a rotary wing spirally provided along an outer circumference of the rotary shaft, in which the rotary wing rotates about the rotary shaft, thereby carrying the developer into a carrying direction along the rotary shaft, and which has a first section where the rotary wing has a constant characteristic in the carrying direction and a second section where the characteristic of the rotary wing gradually changes with respect to position in the carrying direction; and a discharge port provided at a position in the carrying direction that is in a section overlapping the second section or a section downstream of the second section in the carrying direction, and adapted for discharging the developer having a surface height of a predetermined value or more, from the developer passage.
摘要:
An image forming apparatus including a cleaning blade for cleaning a conveying belt or an intermediate transfer body, and a lubricating agent coating mechanism for coating a lubricating agent on the surface of the conveying belt or the intermediate transfer, body, wherein detection is made whether a conveying belt, an intermediate transfer body belt or a cleaning blade is a new article, and the lubricating agent coating mechanism is operated to coat the lubricating agent on the surface of the conveying belt or the intermediate transfer body. Further, detection is made of installation temperature and humidity of the image forming apparatus, and in case of under-prescribed environments, the lubricating agent coating mechanism is operated to coat the lubricating agent on the surface of the conveying belt or the intermediate transfer body. Thereby, the cleaning performance is improved, and the blade burring is prevented.
摘要:
The present invention provides a technique to accurately grasp a deterioration state of a development agent in a development device, in a development system which supplies a new development agent consisting of a toner and a carrier and discharges an deteriorated development agent to maintain a performance of a development agent in a development device.An image forming apparatus according to the present invention includes a stirring information obtaining section configured to obtain information of a stirring time of the development agent in the development device, a supply information obtaining section configured to obtain information of an amount of the carrier supplied into the development device, and a deterioration degree determining section configured to determine a deterioration degree of the development agent in the development device on the basis of the information obtained by the stirring information obtaining section and the supply information obtaining section.
摘要:
In an embodiment, a reducing plate that dams up a part of a developer scraped up by a blade is provided. The reducing plate suppresses swell of the developer held up by a discharge mixer from fluctuating according to the rotation of the blade. Fluctuation in an excess developer discharged from a discharge port is suppressed and replace a deteriorated carrier in a development container with a new carrier little by little.
摘要:
In an embodiment, a reducing plate that dams up a part of a developer scraped up by a blade is provided. The reducing plate suppresses swell of the developer held up by a discharge mixer from fluctuating according to the rotation of the blade. Fluctuation in an excess developer discharged from a discharge port is suppressed and replace a deteriorated carrier in a development container with a new carrier little by little.