PURPOSE:To easily and rapidly mount and dismount a photosensitive drum by operating a clutch mechanism by a clutch mechanism operating means simultaneously when the detaining state of the bearing of the photosensitive drum is released. CONSTITUTION:One end part of a turning lever 91 of the clutch mechanism operating means 9 is disengaged from a cam part 3f of a cleaning device 36 when the cleaning...

An image scanning apparatus for use on a laser electrophotographic printer provides improved imaging in both the scan and process direction in a printer using a multiple spot printhead.

PURPOSE:To reduce the thickness of a lens by adopting a microscopical staircase-like Fresnel lens for a gradually progressive face in such a manner that the macroscopical shape of the gradually progressive face conforms approximately to the shape of a non-gradually progressive. CONSTITUTION:The front side refracting face 1a of the gradually progressive multifocus spectacle lens is so designed that...

Disclosed is a color liquid crystal display device having a plurality of pixels (4R, 4G, 4B), in which conductive films (19R, 19G, 19B) are arranged at regions corresponding to the respective pixels, a light-shielding conductive layer (18R, 18G, 18B) is connected to the conductive films and extends in a region between the pixels, and color filters (8R, 8G, 8B) are formed on the conductive films. I...

Light containing blue, green and red radiation is passed through a colored original which is to be printed on color copy material. The transmitted light is spread out into a color spectrum which extends across a first wavelength range generally corresponding to the blue portion of the spectrum, a second wavelength range generally corresponding to the green portion of the spectrum and a third wavel...

According to the invention it is provided that the surface of a photoconductor is suitably constructed in a rough manner so that the transmission effect for a specific transmission current is improved. As a result, the amount of toner can be reduced which is left behind after the transmission and before a cleaning step is carried out. The amount of toner which is still present at the start of the ...

PURPOSE: To surely cope with even data having a high transfer frequency by alternately taking out picture input data by two-phase clock pulses and transferring this data to a latch circuit by two-phase clocks. CONSTITUTION: Data D1 to D3 sent from an A/D conversion circuit synchronously with two-phase clock pulses &phiv 2 and &phiv 1 are read into buffers 21 and 21b. Data read into buffers 21a and...