Patent classifications
G03G2215/00075
Image forming apparatus and image forming method that accounts for deterioration of a developer
According to one embodiment, an image forming apparatus includes a printer and a controller. The printer performs image formation on a sheet at a first speed relating to a speed of image formation or at a second speed slower than the first speed. The controller acquires information on deterioration of developer contained in an own apparatus, and controls the printer to perform image formation at the first speed when the information does not satisfy a predetermined condition indicating that the developer is deteriorated and to perform image formation at the second speed when the information satisfies the predetermined condition.
IMAGE FORMING APPARATUS AND IMAGE QUALITY ADJUSTING METHOD
An image forming apparatus includes: a density unevenness measurement mode processing portion that, in a density unevenness measurement process, detects density of a density unevenness measurement toner image, which has been formed in a rotational direction of the photoreceptor drum, multiple times in the rotational direction and captures in a memory portion all detected density information associating thereof with rotation phases of the photoreceptor drum; and an image quality adjustment processing portion that, in an image quality adjustment mode, detects density of an image quality adjustment toner image, which has been formed at any position in the rotational direction of the photoreceptor drum, in the rotational direction and corrects detected density information based on density information associated with a rotation phase matching a rotation phase where density of the image quality adjustment toner image has been detected among said all density information having been captured in the memory portion by the density unevenness measurement processing portion.
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
According to one embodiment, an image forming apparatus includes a printer and a controller. The printer performs image formation on a sheet at a first speed relating to a speed of image formation or at a second speed slower than the first speed. The controller acquires information on deterioration of developer contained in an own apparatus, and controls the printer to perform image formation at the first speed when the information does not satisfy a predetermined condition indicating that the developer is deteriorated and to perform image formation at the second speed when the information satisfies the predetermined condition.
Image forming apparatus and image forming method that accounts for deterioration of a developer
According to one embodiment, an image forming apparatus includes a printer and a controller. The printer performs image formation on a sheet at a first speed relating to a speed of image formation or at a second speed slower than the first speed. The controller acquires information on deterioration of developer contained in an own apparatus, and controls the printer to perform image formation at the first speed when the information does not satisfy a predetermined condition indicating that the developer is deteriorated and to perform image formation at the second speed when the information satisfies the predetermined condition.
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
According to one embodiment, an image forming apparatus includes a printer and a controller. The printer performs image formation on a sheet at a first speed relating to a speed of image formation or at a second speed slower than the first speed. The controller acquires information on deterioration of developer contained in an own apparatus, and controls the printer to perform image formation at the first speed when the information does not satisfy a predetermined condition indicating that the developer is deteriorated and to perform image formation at the second speed when the information satisfies the predetermined condition.
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
According to one embodiment, an image forming apparatus includes a printer and a controller. The printer performs image formation on a sheet at a first speed relating to a speed of image formation or at a second speed slower than the first speed. The controller acquires information on deterioration of developer contained in an own apparatus, and controls the printer to perform image formation at the first speed when the information does not satisfy a predetermined condition indicating that the developer is deteriorated and to perform image formation at the second speed when the information satisfies the predetermined condition.
Image forming apparatus including developer carrying member
An image forming apparatus includes: an image bearing member; a developer carrying member configured to contact with the image bearing member and to be separated from the image bearing member; a control unit for controlling the image bearing member and the developer carrying member; and a contact member disposed in contact with the image bearing member. The control unit is configured to sequentially execute: (1) rotating the image bearing member at a first speed in a separated state; (2) switching the image bearing member and the developer carrying member from the separated state to a contact state in a state in which the image bearing member rotates at the first speed; and (3) rotating the image bearing member by decreasing a rotation speed of the image bearing member from the first speed to a second speed smaller than the first speed in the contact state.
Image-forming apparatus the performs printing on printing paper
An image-forming apparatus that is capable of accurately detecting skew angle when arriving at a resist roller. In the image-forming apparatus, the resist roller feeds the printing paper to a printing unit at specified timing, and the printing unit performs printing on the printing paper. The flat-conveying section is formed between the paper-supply roller and the resist roller, and conveys the paper in a flat state. The camera takes images of the edge of the front end of the printing paper that is conveyed in the flat-conveying section. The camera-driving apparatus causes the camera to move along the flat-conveying section at the designed conveying speed of the printing paper. The skew-detection unit, based on images taken in the flat-conveying section by the camera, detects the skew angle when arriving at the resist roller as the arrival skew angle.
IMAGE-FORMING APPARATUS AND PHASE MATCH METHOD OF PHOTOSENSITIVE PARTS
The present disclosure provides an image-forming apparatus and a phase match method of photosensitive parts. The image-forming apparatus includes a first motor, configured to rotate a first photosensitive part; a second motor, configured to rotate a second photosensitive part; a first phase sensor, configured to detect a first rotation phase of the first photosensitive part; a second phase sensor, configured to detect a second rotation phase of the second photosensitive part; and a control unit, configured to, after at least one page of image-forming job is received and at least one of the first motor and the second motor receives a phase match instruction, perform phase match on the first photosensitive part and the second photosensitive part according to a rotation phase of a photosensitive part corresponding to a motor receiving the phase match instruction.
Image forming apparatus
In an image forming apparatus, a peripheral velocity difference is provided between a peripheral velocity of an intermediate transfer belt and a peripheral velocity of an image bearing member, and when a relative moving distance between the image bearing member and the intermediate transfer belt, which is generated in the transfer nip portion because of the peripheral velocity difference, is taken as a shift amount of the toner image, a lower limit value of the shift amount is set to be at least , preferably half of an average perimeter calculated from a weight-average particle diameter of the toner, which is measured in advance.