摘要:
A cleaning device includes a fixing portion provided on a frame, a cleaning member, and an accommodating portion. The cleaning member includes a blade portion contacted to an image bearing member (drum) and a supporting member. The supporting member includes one end portion where the blade portion is provided, another end portion including a portion-to-be-fixed for being fixed at the fixing portion, and a bent portion between the one end portion and the other end portion in a side remote from a surface of the drum toward an outside with respect to a line connecting the portion-to-be-fixed and a contact portion where the blade portion is contacted to the drum. The portion-to-be-fixed is provided downstream of the contact portion with respect to movement direction of the drum. Between the frame and the other end portion, a gap for permitting elastic deformation of the other end portion is provided.
摘要:
A cleaning device includes: a fixing portion provided on a frame; a cleaning member; and an accommodating portion. The cleaning member includes: a blade portion contacted to an image bearing member (drum); and a supporting member. The supporting member includes one end portion where the blade portion is provided, another end portion including a portion-to-be-fixed for being fixed at the fixing portion, and a bent portion between the one end portion and the another end portion in a side remote from a surface of the drum toward an outside with respect to a line connecting the portion-to-be-fixed and a contact portion where the blade portion is contacted to the drum. The portion-to-be-fixed is provided downstream of the contact portion with respect to movement direction of the drum. Between the frame and the another end portion, a gap for permitting elastic deformation of the another end portion is provided.
摘要:
A cleaning member includes a blade portion contacted to a member-to-be-cleaned with respect to a direction counter to a movement direction of the member-to-be-cleaned, and a flexible supporting member. The supporting member includes one end portion where the blade portion is provided, another end portion including a portion-to-be-fixed for being fixed at the fixing portion, and a bent portion between the one end portion and the other end portion in a side remote from a surface of the member-to-be-cleaned toward an outside with respect to a line connecting the portion-to-be-fixed and a contact portion where the blade portion is contacted to the member-to-be-cleaned. The portion-to-be-fixed is provided downstream of the contact portion with respect to the movement direction of the member-to-be-cleaned. The blade portion is supported by the supporting member in contact to only the one end portion.
摘要:
A cleaning member includes: a blade portion contacted to the member-to-be-cleaned with respect to a counter direction to a movement direction of the member-to-be-cleaned; and a flexible supporting member. The supporting member includes one end portion where the blade portion is provided, another end portion including a portion-to-be-fixed for being fixed at the fixing portion, and a bent portion between the one end portion and the another end portion in a side remote from a surface of the member-to-be-cleaned toward an outside with respect to a line connecting the portion-to-be-fixed and a contact portion where the blade portion is contacted to the member-to-be-cleaned. The portion-to-be-fixed is provided downstream of the contact portion with respect to movement direction of the member-to-be-cleaned. The blade portion is supported by the supporting member in contact to only the one end portion.
摘要:
An image forming apparatus includes a photosensitive drum, a charge roller for charging the photosensitive drum, a developing device for developing an electrostatic latent image formed on the charged photosensitive drum with a developer, a first auxiliary charging brush which is located upstream from the charge roller in a movement direction of a surface of the photosensitive drum and applies a voltage of a polarity opposite to a normal polarity of a polarity opposite to a normal polarity of the developer, and a second auxiliary charging brush which is located downstream from the first auxiliary charging brush and upstream from the charge roller and applies a voltage of a polarity identical to the normal polarity of the developer. In the image forming apparatus, the first auxiliary charging brush is supplied with an AC voltage to be improved in recovery performance of a transfer residual developer, and contamination of charging means can be prevented.
摘要:
In adjustment control of a developing device, the number of printed sheets and the toner consumption amount per sheet are calculated. If the accumulated toner consumption amount is smaller than a predetermined amount when a predetermined number of sheets are printed, the developing device is caused to supply a developer in a predetermined amount corresponding to the difference, thereby performing development adjustment of the developing device.
摘要:
An image forming apparatus includes a developing device including a developing receptacle for accommodating a developer including a toner and a carrier, and a detector for outputting a signal corresponding to a toner density of the developer within the developer receptacle, a replenishing member for replenishing the toner to the developing receptacle in accordance with an output value from the detector, a first storage unit having a storage region storing information relating to characteristics of the developer, and a controller for controlling a replenishing operation by the replenishing member based on the output value from the detector and the information relating to characteristics of the developer.
摘要:
The image forming apparatus has a developer container containing a developer therein, a developer toner density detecting portion for detecting the permeability of the developer in the developer container to thereby detect toner density, and an engine controller for detecting whether the image forming apparatus has gone wrong, on the basis of the toner density detected by the developer toner density detecting portion. Thereby, it becomes possible to detect the failure of a developing apparatus reliably and early by an inexpensive construction.
摘要:
To provide an image forming apparatus improving discharging of a developer from charge providing member for providing charge to the developer remaining on an image bearing member to the image bearing member, the developer is charged from the charge providing member to the image bearing member. When a developer discharging region of the image bearing member is disposed at a charging position, charging member is applied with a voltage having a direct current component of an absolute value equal to or smaller than an absolute value of voltage applied to the charge providing member without an alternating current component.
摘要:
An image forming apparatus using a two-component developer including a toner and a carrier as a developer, and provided with a toner replenishing device for replenishing with the toner has remaining amount detecting means for detecting the remaining amount of toner in a toner container, and informing means for generating a signal indicative of a small remaining amount of toner when the remaining amount of toner in the toner container becomes equal to or less than a predetermined amount, and a limit value is made effective only in a state in which the signal indicative of a small remaining amount of toner is being outputted. Also, by the density of the developer in a developing container becoming smaller than a predetermined limit value, a state in which a developing device is not being replenished with the toner from the toner replenishing device is judged. The limit value has a plurality of standards, and a value is selected and used in conformity with the remaining amount of toner in the toner container.