摘要:
An image forming apparatus comprises a container, a supplier, a conveyor, a grammage detector, a sheet detector, an image former, and a processor. The processor set a flag when the detected grammage exceeds a first grammage, measures a conveyance time of a sheet to the sheet detector, determines a conveyance delay of the sheet based on whether the conveyance time is greater than or equal to a first amount of time, counts a number of occurrences of the conveyance delay in a state where the detected grammage exceeds the first grammage, and prohibits supply of sheets from the container when the detected grammage exceeds a second grammage larger than the first grammage or the number of occurrences of the conveyance delay is greater than or equal to a threshold value.
摘要:
A paperboard includes plural stacked paper layers. The surface electrical resistance of an image forming surface of the paperboard in an electrophotographic system is 1×1013Ω or less after humidity control in an environment of 20° C. and 10% RH.
摘要:
A printer for printing to electrically printable media is described. During printing, a drum surface having first and second portions is charged to a first voltage, and the second portions of the surface are selectively discharged. A transfer electrode has a uniform voltage applied thereon. A first erase electrode and a second erase electrode have a fixed voltage differential between them. The printer receives the electrically printable medium between the first erase electrode and the second erase electrode to expose the electrically printable medium to the fixed voltage differential, and to move the electrically printable medium proximal to the drum and the transfer electrode to expose the electrically printable medium to a first voltage differential that results from the first voltage of the first portions and the uniform voltage, and a second voltage differential that results from the second voltage of the second portions and the uniform voltage.
摘要:
A printing sheet reusability determination device includes a sheet carrying path that carries a second state sheet obtained by erasing an erasable image from a first state sheet on which the erasable image is printed, an imaging portion that images the second state sheet on the sheet carrying path, an illumination portion that illuminates the second state sheet on the sheet carrying path at a first irradiation angle when images remaining on the second state sheet are photographed, and at a second irradiation angle smaller than the first irradiation angle when a projected image generated by illuminating the second state sheet is photographed, an irradiation angle changing portion that changes the first irradiation angle and the second irradiation angle, and a reusability determination portion that determines whether or not to reuse the second state sheet based on imaging information obtained by the imaging of the imaging portion at the first irradiation angle and determines whether or not to reuse the second state sheet based on imaging information obtained by the imaging of the imaging portion at the second irradiation angle.
摘要:
A printing system including a substrate and a dual-mode printing device, the dual-mode printing device including a permanent writing source and a transient writing source, wherein the permanent writing source is adapted to deposit an imaging material onto the substrate and the transient writing source is adapted to develop an image on the substrate by applying a stimulus to the substrate.
摘要:
There is described an image forming apparatus comprising a tray that outputs information by which various kinds of fixed form sized of recording mediums can be discriminated and a controller to acquire a approximate size of a recording medium having an unfixed form size by conducting an operation for detecting a fixed form size of the recording medium by referring to the information if the recording medium having the unfixed form size is stacked on the tray, wherein, according to the approximate size, the controller controls an operation for displaying information corresponding to unfixed form size or sizes registered in advance.
摘要:
A fuser system of a xerographic device includes at least one set of a fuser member and a pressure member having a nip width therebetween, the nip width being set to within a specification nip width range, at least one sensor for monitoring the velocity of at lease one of the fuser member, the pressure member and a media passing through the nip, a processor that receives the velocity data from the at least one sensor and that determines a current nip width from the velocity data and compares the current nip width to the specification nip width range, and a nip width adjustment device in communication with the processor, which adjusts the current nip width to be within the specification nip width range. To offset changes in nip width due to hardening/softening of a fuser member material, or to provide a means to measure nip width in order to enable fusing setpoints using multiple nip width specifications, a method for closed loop control of nip width is enabled by the fuser system.
摘要:
An image forming apparatus includes: an image forming unit which forms a toner image on an image carrier; a conveying unit which conveys a recording medium; a transfer unit which transfers the toner image formed on the image carrier to the recording medium conveyed by the conveying unit in a transfer nip; a pre-transfer charging unit which imparts an electrical charge, having a polarity opposite to a normal charge polarity of a toner, to the recording medium conveyed by the conveying unit on an upstream side of the transfer nip in a conveyance direction; and a destaticizing unit which removes a part of the electrical charge that is imparted to a surface of the recording medium by the pre-transfer charging unit and corresponds to unevenness on the surface of the recording medium on an upstream side of the transfer nip in the conveyance direction.
摘要:
An image forming apparatus includes: an image carrier; a toner image forming unit that forms a toner image on the image carrier; a transfer unit that transfers the toner image on the image carrier to a transfer target having ridges and valleys on a surface thereof; an adjusting unit that adjusts a ratio of A/B, where A is a transfer ratio [%] from the image carrier to a valley portion of the transfer target while B is a transfer ratio [%] from the image carrier to a ridge portion of the transfer target, based on an adjustment input by a user; and a control unit that controls a transfer condition of the transfer unit based on the ratio of A/B adjusted by the adjusting unit.
摘要:
Processing time for switching discharge destinations can be reduced by providing a first acquisition unit configured to acquire a first parameter indicating a number of middle sheets included in one set of carbonless copy paper set in a sheet feed tray, a second acquisition unit configured to acquire a second parameter indicating a number of middle sheets included in one target product, and a control unit configured to, if the second parameter is greater than the first parameter, print on a top sheet and a middle sheet needed for printing a print job, discharge a bottom sheet and a top sheet and a middle sheet included in a next set that are not needed for printing the print job to a discharge destination different from a discharge destination of the target product, and to print on a middle sheet and a bottom sheet needed for printing the print job.