Patent application number | Description | Published |
20120087685 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member for carrying a developed image; a developer carrying member for carrying a developer to be supplied to the image bearing member; a cleaning blade for removing the developer from the image bearing member; a control device for executing, at predetermined timing during a non-image-formation period, sequence controls for moving a developer from the sleeve to the drum and removing a developer moved to the drum by the cleaning blade; and a removing device capable of removing the developer in a position before developer moved to the image bearing member by the cleaning blade, wherein the sequence controls includes a first sequence control and a second sequence control, and wherein an amount of the developer removed by the cleaning blade is controlled such that the amount is smaller in the first sequence control than in the second sequence control. | 04-12-2012 |
20130028641 | IMAGE FORMING APPARATUS - An image forming apparatus includes multiple image forming stations, and a controller for executing selectively a multi-color image mode or a monochromatic image forming mode, wherein in the monochromatic image forming mode, a first one of image forming stations which forms the image, and a second one which is upstream of the first image forming station exposes the image bearing members to a first image pattern and a second image pattern, respectively, and the controller determines the second image pattern in accordance with the first image pattern, and effects the exposure to the second image pattern. | 01-31-2013 |
20130039671 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member, a developer container, a first calculator, and a second calculator, wherein the first calculator calculates an amount of the developer supplied to the image bearing member from the developer container, on the basis of an amount of the developer measured by a measuring device after an image forming operation, and an amount of the developer initially contained in the developer container, and wherein the controller outputs information signal relating to the developer amount accumulated in the collection container on the basis of the amount of the developer calculated by the first calculator and the amount of the developer calculated by the second calculator. | 02-14-2013 |
20130148992 | IMAGE FORMING APPARATUS - An image forming apparatus capable of forming an image at a plurality of image forming speeds, includes: an image bearing member; a developer carrying member; a developer feeding member, having a foam layer at its surface, for feeding the developer to the developer carrying member by being rotated at a speed corresponding to each of the image forming speeds in contact with the developer carrying member; and a controller for rotating, before development, the developer feeding member for a predetermined time corresponding to the image forming speed. The controller extends the predetermined time when an image forming mode is switched from a first mode in which image formation is effected at a first image forming speed to a second mode in which the image formation is effected at a second image forming speed slower than the first image forming speed. | 06-13-2013 |
20130164040 | DEVELOPING DEVICE, CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - A developing device includes: a flexible container, provide with an opening, for accommodating the developer; a frame for accommodating the container; an urging member, rotatably provided inside the frame, for urging the container by rotation thereof to deform the container; and a developer carrying member for carrying the developer on its surface to feed the developer. A distance X from a rotation center of the urging member to the surface of the developer carrying member and a length T from the rotation center of the urging member to a free end thereof for urging the container satisfy a relationship of X06-27-2013 | |
20130279921 | IMAGE FORMING APPARATUS - An image forming apparatus including: an image bearing member on which a latent image is formed; a developer carrying member configured to carry developer; a conductive member paired with one of the developer carrying member and the image bearing member to form a capacitor; a contact-separation member configured to assume a first position for bringing the developer carrying member into contact with the image bearing member and a second position for separating the developer carrying member from the image bearing member; a detecting unit configured to detect a capacitance of the capacitor applied with a voltage; and a control unit configured to detect whether the apparatus is ready for image formation based on a first detected result detected by the detecting unit when the contact-separation member assumes the first position and a second detected result detected by the detecting unit when the contact-separation member assumes the second position. | 10-24-2013 |
20140016952 | IMAGE FORMING APPARATUS - Based on a photosensitive drum life threshold value when each of the plurality of image formation execution modes is independently used, and a photosensitive drum life threshold value according to a usage rate of each of the image formation execution modes, the image forming apparatus having a plurality of image formation execution modes calculates a photosensitive drum life threshold value according to the usage rate. Then, the image forming apparatus compares the calculated photosensitive drum life threshold value with a remaining CT film thickness prediction value for the photosensitive drum to determine the life of the photosensitive drum. | 01-16-2014 |
20140016953 | IMAGE FORMING APPARATUS - An image forming apparatus includes a photosensitive drum life estimation mechanism which estimates wear amounts of a charge transfer layer in both of a toner bearing area and an end portion of a toner non-bearing area of a developing roller and informs a user that the photosensitive drum has reached the end of its life if, out of total wear amounts of the areas corresponding to predetermined life threshold values of the toner bearing and non-bearing areas, either of the total wear amounts reaches the threshold value. | 01-16-2014 |