Image forming apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorKazuhiro Suzuki
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Abstract
An image forming apparatus according to the present invention includes: a discrimination circuit for detecting a conveying load at a time a sheet, on which an image is to be formed, is conveyed through a curved conveying path, for discriminating a thickness of the sheet based on a detected value of the conveying load, and for generating a process control signal in order to carry out a process control suitable for the thickness of the sheet based on the discriminated thickness; and a process control circuit for carrying out the process control suitable for the thickness of the sheet in response to the process control signal received.
Claims18
An image forming apparatus comprising:
- a conveying system having:
- a motor;
- and
- a sheet conveying roller which is driven by the motor;
- a monitoring circuit for monitoring a rotating load of the motor;
- a discrimination circuit for discriminating the thickness of the sheet conveyed by the conveying system based on a signal from the monitoring circuit to generate a process control signal;
- and
- a process control unit for carrying out a process control in response to the process control signal.
An image forming apparatus comprising:
- a conveying system for conveying a sheet on which an image being formed, the conveying system comprising a motor for conveying the sheet, and a conveying load being applied to the motor in accordance with a thickness of the sheet;
- a discrimination circuit for discriminating the thickness of the sheet conveyed by the conveying system to generate a process control signal;
- and
- a process control unit for carrying out a process control in response to the process control signal.
- wherein said discrimination circuit is capable of detecting the load of the motor, and
- wherein said discrimination circuit is capable of detecting, as the load of the motor, a drive current value of the motor.
An image forming apparatus in which ordinary paper is fed from a cassette paper feeding unit installed in a main section in order to print an image thereon, thick paper and thin paper are fed from a manual paper feeding unit in order to print an image thereon, said manual paper feeding unit being for manually feeding paper from outside of the main section, and process conditions for ordinary paper are set to be an initial mode, said image forming apparatus comprising:
- a conveying system having;
- a motor and
- a sheet conveying roller which is driven by the motor;
- a monitoring circuit for monitoring a rotating load of the motor;
- a discrimination circuit for discriminating the thickness of the sheet conveyed by the conveying system based on a signal from the monitoring circuit to generate a process control signal;
- and
- a process control unit for carrying out a process control in response to the process control signal.
Dependencies are inferred from the claim text.