摘要:
The present invention provides an intermediate transfer unit, comprising a photoconductive drum, an intermediate transfer belt, a primary transfer member, which primarily transfers a toner image formed on said photoconductive drum onto said intermediate transfer belt at a primary transfer position, said primary transfer member having a resistance value (RT) of 1 MΩ or less, a secondary transfer member, which secondarily transfers said toner image from said intermediate transfer belt to a recording medium, an elastic backup member disposed in said primary transfer position, and a high-voltage power source (V 1 ), which applies bias to said primary transfer member under a current absorbable constant-voltage control (R X ).
摘要:
The present invention provides an image forming apparatus, comprising a photoconductive drum (110) and an intermediate transfer belt (360), to which a toner image formed on said photoconductive drum (110) is primarily transferred and which secondarily transfers said toner image onto a recording medium (S), wherein a loose apparent density, a shape factor SF-1 and a shape factor SF-2 of toner forming the toner image are no less than 0.35 g/cm 3 , no more than 150 and no more than 140, respectively.
摘要:
An image forming apparatus for forming an image on both of a first side and a second side which are the right side and the back side of recording material (S), which comprises an image carrier (140) on the surface of which a toner image is formed, a transfer member (36) for forming a transfer part between the transfer member and the image carrier to transfer the toner image on the image carrier onto the recording material, a transfer voltage applying section for applying transfer voltage to the transfer member, a fixing member (61) for heating the recording material, on which the toner image is transferred by the transfer member, passed therethrough to fix the toner image on the recording material, a reversing path (70') for reversing the two sides of the recording material passed through the fixing member and returning the reversed recording material to the transfer part again, a timer section (93) for measuring elapsed time since the recording material, on the first side of which a toner image is transferred, passes through the fixing member until the transfer of a toner image on the second side is started when an image is formed on the first and second sides of the recording material, a humidity detecting section (92) for detecting humidity, and a control section (91) for selecting transfer voltage for transferring a toner image on the second side of the recording material based upon elapsed time measured by the timer section and humidity detected by the humidity detecting section.
摘要:
A recording medium carrier system of an image forming apparatus is constituted by independent units as a paper supply cassette (20), a paper feed unit (24, 31, 33), a transfer unit (12, 13), a fixing unit (50), and a paper ejecting unit (60). An intermediate transfer unit in the transfer unit is provided with an intermediate transfer belt (360) to which a toner image formed on a photoconductive drum (110) is primarily transferred at a primary transfer position and which secondarily transfers the toner image on a recording medium (S) at a secondary transfer position, and a driving roller (310) for circulating the intermediate transfer belt (360). The primary transfer position is arranged close to the driving roller (310).
摘要:
A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber.
摘要:
An object of the present invention is to provide an ink composition which, when used with an ink jet recording apparatus, can realize excellent ink ejection stability while maintaining safety and satisfactory penetration of ink. The ink composition according to the present invention comprises at least a pigment, a dispersant for dispersing the pigment, a 1,2-alkanediol, and water as a main solvent, wherein the dispersant is a block polymer resin having an acid value of 70 to 200.
摘要:
Disclosed are an aqueous pigment dispersion and an ink composition which can realize high print density. The aqueous pigment dispersion comprises at least water and a surface-modified carbon black, the surface-modified carbon black being dispersible and/or dissolvable in water without any dispersant and having a hydrophilic functional group content/specific surface area value of 5 to 30 µmol/m 2 .