An image forming apparatus includes a first condition section that derives, from the density of the image detected by an image density detector, a forming condition in forming an image such that the density of the image formed comes close to a predetermined target density, a second condition section that derives, from the environmental state detected by the environmental detector, a forming condition such that the density of the formed image becomes the target density, and a stabilization section that causes, when a difference between the two forming conditions exceeds a predetermined degree, the image forming section to perform a stabilization operation which stabilizes a developing property of the developer in the developing device as compared to the current environmental state, and thereafter causes the formation of an image, the density detection, and the derivation of the forming condition by the first condition section to be performed again.

An image forming apparatus includes a transfer unit that transfers a toner image on an image bearer onto a transfer medium. The image forming apparatus includes a control unit that controls a transfer voltage to be output to the transfer unit in accordance with a certain condition. The control unit applies currents having at least two different values while paper is not being fed. The two current values are lower than a current value during paper feeding. The control unit estimates an output voltage on a basis of a voltage detected through the application of the currents. When the estimated output voltage falls below a certain limiter voltage, the control unit controls to bring the output voltage to a value calculated through the certain condition. When the estimated output voltage exceeds the certain limiter voltage, the control unit controls to bring the output voltage to the limiter voltage.

An adhesion apparatus includes: an image forming unit configured to form, through an electrophotographic process, an adhesive image of a powder adhesive on a sheet that is conveyed; and a control unit configured to control the image forming unit to use a first pattern in a first conveyance period, and use a second pattern different from the first pattern in a second conveyance period following the first conveyance period, as a formation pattern in an adhering section corresponding to part of a width direction orthogonal to a conveyance direction of the sheet.

A controller is configured to execute a larger gamut technology mode in which the controller performs image formation by controlling a ratio of a rotation speed of a development roller to a rotation speed of a photosensitive drum such that the ratio becomes a second speed ratio higher than a first speed ratio in a normal mode. The controller is configured to, when the controller executes the larger gamut technology mode, control transfer voltage based on a humidity around an image forming apparatus.

A transfer apparatus includes a transfer unit, a first detector, a supplying unit, a second detector, and a controller. The transfer unit transfers a toner image onto an object. The first detector detects humidity. The supplying unit supplies, to the transfer unit, a transfer voltage, a setting voltage in a first case, and a setting current in a second case. The second detector detects a current flowing through the transfer unit upon supply of the setting voltage and a voltage across the transfer unit upon supply of the setting current. The controller controls the supplying unit such that, when transfer is performed in the first case, a transfer voltage derived using the setting voltage and the detected current is supplied, and when transfer is performed in the second case, a transfer voltage derived using the setting current and the detected voltage is supplied to the transfer unit.

A method for assembling a solar module structure comprises patterning a frontside and a backside of a double-sided printed circuit board coated with metallic foils according to desired frontside and backside interconnect layouts; applying a first coating layer to the rear side of a plurality of three-dimensional thin-film solar cells, each three-dimensional thin-film solar cell comprising: a three-dimensional thin-film solar cell substrate comprising emitter junction regions and doped base regions; emitter metallization and base metallization regions; the three-dimensional thin-film solar cell substrate comprising a plurality of single-aperture unit cells; placing the three-dimensional thin-film solar cells on the frontside of the double-sided printed circuit board; preparing a solar module assembly, comprising: a glass layer; a top encapsulant layer; the plurality of three-dimensional thin-film solar cells on the frontside of the double-sided printed circuit board; a rear encapsulant layer; a protective back plate; and sealing and packaging the solar module assembly.

An image forming apparatus includes a photosensitive member, a charging member, an exposure member, a rotatable developer carrying member, a voltage source, and a controller configured to control the voltage source so that when a humidity of an inside of the apparatus is a first humidity, a developing bias voltage including an oscillating portion having an oscillating voltage and a rest portion having a substantially constant voltage are alternately repeated is outputted and so that when the humidity of the inside of the apparatus is a second humidity lower than the first humidity, a developing bias voltage in which the rest portion is not included or is shorter than the rest portion when the humidity of the inside of the apparatus is the first humidity.

A method of controlling the ejection speed of a print job that includes, with a density module of a printing device, determining a density classifier based on a region of a plane where print fluid is to be printed for a plurality of sheets of media of a print job; determining a percentage of each sheet of media exceeding a threshold density classifier relative to a total sheet count of the print job; and, based on the percentage, initiating an assisted ejection of the print job from the printing device.

An image forming apparatus includes an image reading unit, a fixing unit, a time setting unit, and a control unit. The image reading unit moves a running body having an onboard optical system. The fixing unit heats toner transferred onto the print medium and applies pressure on the heated toner with respect to the print medium to fix the toner. The time setting unit sets an estimated time when use of the image forming apparatus starts. The control unit controls the image reading unit, the fixing unit, and the time setting unit. The control unit, prior to the set estimated start-of-use time by a predetermined period set in advance, activates the image reading unit to detect whether condensation has occurred in the optical system, heats the fixing unit in response to a detection of occurrence of condensation, and stops the heating before the estimated start-of-use time.

According to one embodiment, an image forming apparatus includes an image forming unit, an environmental sensor, a waste toner collection container, a paddle motor, a storage unit, and a control unit. The image forming unit is configured to forma toner image on a sheet using a toner that is replenished from a toner cartridge containing the toner. The environmental sensor is configured to acquire information regarding an environment around the image forming unit. The waste toner collection container is configured to contain a waste toner produced in the image forming unit. The paddle motor is configured to rotate a stirring paddle provided in the waste toner collection container. The storage unit is configured to store a correction factor corresponding to the information regarding the environment acquired by the environmental sensor. The control unit is configured to acquire a count value as a value relating to a replenishment amount when the toner is replenished from the toner cartridge to the image forming unit. The control unit is configured to correct the count value with the correction factor corresponding to the information regarding the environment. The control unit is configured to update a cumulative count value with the corrected count value. The control unit is configured to drive the paddle motor according to the updated cumulative count value.