摘要:
An image forming apparatus includes an image forming unit for forming an image on a recording medium, and a measurement unit which measures the density of the image formed on the recording medium. A control unit determines an operation condition of the image forming unit on the basis of the measurement result from the measurement unit. A storage unit stores the operation condition determined by the control unit, and a display unit reads out the operation condition at a predetermined time for display. The control means controls a subsequent operation of the image forming apparatus according to the stored operation condition.
摘要:
A color image forming method and apparatus in which toner patterns, formed by toners of different colors, on an image bearing member, can be detected by a single sensor. Near-infrared light is emitted from an LED at each formation of a single-colored pattern on the photosensitive drum and the amount of near-infrared light reflected from the drum is detected by the sensor, for the purpose of effecting gradation control.
摘要:
An image forming apparatus comprises: an image forming unit to form an image onto a recording medium; a measuring unit to measure a density of the image formed on the recording medium; a controller to execute an image stabilizing control to decide image forming conditions of the image forming unit on the basis of the image density measured by the measuring unit; a heater to heat a load by supplying a current to the image forming apparatus; and a detector to detect a temperature of the load which is heated by the heater, wherein the controller controls the execution of the image stabilizing control in accordance with an output of the detector at the start of the power supply to the apparatus. When the detected temperature of the load is less than a predetermined value, the image stabilizing control is executed. When it is equal to or higher than the predetermined value, the image stabilizing control is not performed. When the image stabilizing control is executed, the control means allows the image forming unit to form a sample image and the image forming conditions are controlled on the basis of the state of the sample image.
摘要:
The present invention relates to a toner image density detecting mechanism for an image forming apparatus which includes an image bearing layer supported on a rotatable cylindrical member, a device for forming a plurality of toner reference patterns on the image bearing layer at respective positions which equally divide a circumference of the cylindrical member, a detector for detecting an image density of the toner image of the reference pattern, and a controller controlling an image forming condition in accordance with an output of the detector; wherein an average of the image densities is determined for use in a control operation of the controller. Preferably, the toner used has a reflective or absorbing rate not less than 1.5 times that of the image bearing layer.
摘要:
An image processing apparatus, which improves the image quality in gradation control, measures the density of a specified gradation pattern formed on a photosensitive drum with a photosensor and prepares a look-up table for gamma correction, based on thus measured density. Formation of a pseudo-contour is prevented by control of the inclination of the gamma correction curve represented by the data of the look-up table.
摘要:
An image forming apparatus forms a predetermined test image, detects a spatial frequency characteristic of the test image, and determines an optimum image forming condition on the basis of the detected spatial frequency characteristic.
摘要:
An image forming apparatus for controlling image forming conditions regarding the image quality comprises an image forming unit to form an image onto a recording medium such as a paper, a generator to generate pattern data to form an image of a stripe pattern of a predetermined interval by the image forming unit, a reader to read the stripe pattern image which is formed by the image forming unit in accordance with the pattern data which is generated from the generator, a memory to store the stripe pattern image read by the reader, a detector to detect the interval of the stripes of the stripe pattern stored in the memory, and a controller to control the image forming unit on the basis of the stripe interval detected by the detector.
摘要:
A transparent laminate film, including at least a first transparent resin layer comprising a transparent resin having a heat-resistance, and a second transparent resin layer disposed thereon comprising a transparent resin, wherein the transparent resin of the second transparent resin layer has a compatibility with a binder resin of a toner to be fixed thereon, and has a large elasticity than that of the binder resin of the toner at a fixing temperature of the toner.
摘要:
A transparent laminate film, including at least a first transparent resin layer comprising a transparent resin having a heat-resistance, and a second transparent resin layer disposed thereon comprising a transparent resin, wherein the transparent resin of the second transparent resin layer has a compatability with a binder resin of a toner to be fixed thereon, and has a large elasticity than that of the binder resin of the toner at a fixing temperature of the toner.
摘要:
A transparent laminate film, including at least a first transparent resin layer comprising a transparent resin having a heat-resistance, and a second transparent resin layer disposed thereon comprising a transparent resin, wherein the transparent resin of the second transparent resin layer has a compatibility with a binder resin of a toner to be fixed thereon, and has a large elasticity than that of the binder resin of the toner at a fixing temperature of the toner.