摘要:
A liquid crystal display device comprising first and second polarizing elements of which transmission axes are perpendicular to each other, and, disposed between the polarizing elements, a liquid crystal layer vertically aligned in a black state, and first and second optically anisotropic layer is disclosed. In the liquid crystal display device, the first optically anisotropic layer is a biaxial optically anisotropic layer of which in-plane retardation (Re) and thickness-direction retardation (Rth) are larger at a longer wavelength range within a range of from 400 nm to 700 nm, and the second optically anisotropic layer satisfies 0 nm 10 in which Re(550) is in-plane retardation (Re) at a wavelength of 550 nm and Rth(550) is thickness-direction retardation at the same wavelength.
摘要:
An image It is formed as a patch image which includes a header image portion Ih of a solid image having a length of a circumferential length of a developing roller or more, and a gradation image portion Ig progressively varied in the tone level thereof from the maximum level to the minimum level. The densities of the patch image on an intermediate transfer belt are sampled. However, the sampling results contain errors resulting from noises or variations and hence, are subjected to a noise removal process, a periodical variation correction process and a reverse correction process. The results detected on the intermediate transfer belt do not always coincide with image densities (OD values) on a recording material. Therefore, the detection results are converted into the OD values, based on which tone characteristics of an apparatus is estimated. Then a tone correction table is updated in a manner to compensate for the tone characteristics. This approach is taken to improve image quality on the recording material.
摘要:
An image forming apparatus for forming an image corresponding to an image signal on a recording material, comprising: a signal processor which generates an image-formation control signal by subjecting the image signal to a signal processing process including a screening process selectively using one of plural types of different processing screens; an image forming unit which includes an intermediate transfer medium, and which forms the image by forming a toner image on the intermediate transfer medium corresponding to the image-formation control signal and transferring and fixing the toner image to a recording material; and a detector which detects a quantity of the toner carried on the intermediate transfer medium as the toner image, wherein the signal processing process performed by the signal processor includes a tone correction process for compensating for a gamma characteristics of the apparatus based on a detection result given by the detector detecting a toner image formed as a patch image by using the processing screen and a transferring/fixing characteristics, which represents a relation between a quantity of toner constituting a toner image carried on the intermediate transfer medium and a density of an image formed on the recording material as a result of transferring and fixing the toner image to the recording material, previously determined in correspondence to the processing screen.
摘要:
The present invention provides a printing device whereby a recording agent cartridge that pertains to recording agent cartridge-related information can easily be identified. The printing device of the present invention stores cartridge identification information including user information on each user allocated to one of the multiple recording agent cartridges. When a print job with user identification information is received via the network (S10), the printing device identifies a recording agent cartridge corresponding to a user of the print job and sets the identified recording agent cartridge to an active recording agent cartridge for executing the print job (S20), based on the user identification information received with the print job and the user information. The printing device executes the print job and outputs output information with respect to a specified recording agent cartridge selected among the multiple recording agent cartridges, together with a specific piece of the cartridge identification information regarding the specified recording agent cartridge, which is selected out of the cartridge identification information stored in said cartridge identification information storage module (S30).
摘要:
An image forming apparatus adapted for a smooth mounting/dismounting of a process unit and for the reduction of wasteful power consumption is provided.Unless a new image signal is applied after completion of an image forming operation, the apparatus starts a clocking operation by an internal timer (Step S101). If the apparatus is left standstill for a predetermined length of time (Step S102), a sleep process (Step S103) is executed to shift the apparatus to a power save mode to consume less power. When an outside cover is opened (Step S105), on the other hand, the apparatus is shifted to a replacement operation mode (Step S106) in which only the rotation of a development rotary is permitted. However, if the apparatus is left with the outside cover opened (Step S108), the sleep process is executed.
摘要:
An electrostatic latent image associated with image data is formed on an image carrier. A developer includes a container containing toner a roller facing the image carrier and causing the toner to adhere onto the image carrier to develop the electrostatic image with the toner as a image, and an applier applying the toner to the roller. A controller is operable to receive the image data and to control the roller in correspondence to the image data. The image data includes first image data corresponding to a first image and second image data corresponding to a second image. The first image is formed onto a trailing end portion of the medium. The controller receives the second image data after the formation of the first image. After the formation of the first image and before the formation of the second image, the controller causes the roller to rotate without causing the toner to adhere onto the image carrier.
摘要:
In a monochromatic print mode, an abutting timing on when a secondary transfer roller abuts on an intermediate transfer belt is different from the timing in a color print mode. Specifically, in the monochromatic print mode, the secondary transfer roller abuts on the intermediate transfer belt prior to the start of an exposure process for the first image. Then, the secondary transfer roller is separated from the intermediate transfer belt at completion of the secondary transfer of the final image. Therefore, the secondary transfer roller has already abutted on the intermediate transfer belt at the start of the irradiation of a light beam for forming the first electrostatic latent image. The exposure process is performed with the secondary transfer roller kept abutting on the intermediate transfer belt.
摘要:
An electrostatic latent image associated with image data is formed on an image carrier. A developer includes a container containing toner a roller facing the image carrier and causing the toner to adhere onto the image carrier to develop the electrostatic image with the toner as a image, and an applier applying the toner to the roller. A controller is operable to receive the image data and to control the roller in correspondence to the image data. The image data includes first image data corresponding to a first image and second image data corresponding to a second image. The first image is formed onto a trailing end portion of the medium. The controller receives the second image data after the formation of the first image. After the formation of the first image and before the formation of the second image, the controller causes the roller to rotate without causing the toner to adhere onto the image carrier.
摘要:
The present invention provides a printing device whereby a recording agent cartridge that pertains to recording agent cartridge-related information can easily be identified. The printing device of the present invention stores cartridge identification information including user information on each user allocated to one of the multiple recording agent cartridges. When a print job with user identification information is received via the network (S10), the printing device identifies a recording agent cartridge corresponding to a user of the print job and sets the identified recording agent cartridge to an active recording agent cartridge for executing the print job (S20), based on the user identification information received with the print job and the user information. The printing device executes the print job and outputs output information with respect to a specified recording agent cartridge selected among the multiple recording agent cartridges, together with a specific piece of the cartridge identification information regarding the specified recording agent cartridge, which is selected out of the cartridge identification information stored in said cartridge identification information storage module (S30).
摘要:
An image formation device has an image carrier and a development device (50) into which development units housing toner are detachably installed. The development units have storage device storing color and toner amount remaining information. And the image formation device operates in monochrome printing mode when development units of the same color are installed. The image formation device has display unit (95) to display the toner remaining amount in development units, and control unit which acquires color and toner amount remaining information in the storage device, and executes control to enable switching between a separate remaining amount display mode (95A, 95C) to separately display on the display unit the toner amount remaining in each of installed development units corresponding to installation positions, and a total remaining amount display mode (95B, 95D) to display on the display unit the total toner amount remaining in installed development units of the same color.