Abstract:
PROBLEM TO BE SOLVED: To provide an optical scanning device which eliminates the need for a margin of a fitting space of a driving substrate mounted with light-emitting elements, prevents a load from being imposed on terminals of the respective light-emitting elements, and is easy to directly connect a connector of the driving substrate and a connector of a control substrate.SOLUTION: Each of semiconductor lasers 101 are fixed inside each of cylindrical bodies 111a of a side plate 111 of a housing 110 in a state in which directions of the respective semiconductor lasers 101 are aligned. A driving substrate 113 is fixed to a first specified position of the side plate 111 of the housing 110. Simultaneously, six terminals 101c of the semiconductor lasers 101 are inserted into one shared hole 115 of the driving substrate 113 for each of the respective semiconductor lasers 101, a mounting position of the semiconductor laser 101 onto the driving substrate 113 is set within a range in which the respective terminals 101c of the semiconductor lasers 101 in the shared hole 115 can be displaced, and then the respective terminals 101c of the semiconductor lasers 101 are connected to each of wiring patterns 117 of the driving substrate 113.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical scanner with an overfill optical system supporting high resolution that receives stable and a large amount of laser beams by arranging a plurality of light-emitting devices in a plurality of light sources such that a BD sensor detects a laser beam that is closest to the BD sensor side among a plurality of laser beams emitted from the plurality of light sources; and an image forming apparatus including the optical scanner.SOLUTION: A plurality of light-emitting devices LD1 to LD4 in a light source 101 are arranged such that a BD sensor 209 detects reflection light of a laser beam from the light-emitting device LD1 located on the BD sensor 209 side among laser beams emitted from the light-emitting devices LD1 to LD4 that are reflected on a reflection surface of a polygon mirror 106 of an optical scanner 1 through a scanning optical system 100 and an emitting optical system 200.
Abstract:
PROBLEM TO BE SOLVED: To maintain an image quality by appropriately supporting a paper with the use of a platen which expands/contracts in accordance with the expansion/contraction of a right and a left casing parts, and correctly adhering ink discharged from an ink head to the paper. SOLUTION: A rib shaft 21 as a supporting member is constituted of a rib shaft A21a, a rib shaft B21b and the like which are hollow cylinders with dovetails formed in an arrow direction Y being coupled slidably with each other. Respective one ends of the rib shaft A21a and B21b are supported by side faces in the arrow direction Y of the right and left casing parts 2 and 3. Moreover, a plurality of ribs 22 each formed in a hollow ring are outfitted slidably to the rib shaft 21. A plurality of bellows 23 as an elastic member formed in a hollow cylinder are outfitted slidably to each rib shaft 21 between the ribs 22 to generate an equal elastic force in the arrow direction Y of an expansion/contraction direction. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an image forming apparatus having a telescopic housing in which a sheet can be carried stably by preventing the end part of the sheet from floating on a sheet carrying passage regardless of the length of the housing. SOLUTION: Housing of an inkjet printer is formed of a main cabinet 4 mounting an inkjet head 12 performing print processing for a sheet, and a side cabinet 14 being fixed to the main cabinet 4 movably in the left/right direction while closing the left/right ends of the main cabinet 4. A platen 11 is formed on the bottom face of the main cabinet 4 and a sheet guide member 2 is formed integrally with a side cabinet 14. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an optical scanner which, even when the incident position of a laser beam to reflection faces of a rotating polygon mirror is adjusted, suppresses the influence of the adjustment on the optical performance without changing positional relationship of respective optical components, consequently irradiates a scanning object body with uniform light. SOLUTION: The laser scanner 13 forms a unit 110 in which components of a scanning optical system 100, i.e., an LD (Laser Diode) 101, a collimator lens 102, an aperture 103, expander lenses 107, 108, and a cylindrical lens 104 are assembled. The incident position to the reflection faces of the rotating polygon mirror 106 is adjusted by rotating or parallel moving the unit 110, thereby the scanning object body (photoreceptor drum 17) is irradiated with uniform light without changing the positional relationship of the optical components while reducing the influence on the optical performance. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suppress an error of a scanning line of a plurality of light beams in a sub-scanning direction. SOLUTION: An incident angle of a laser beam L1 of black having the highest visibility to a reflection face of a polygon mirror 6 is made to be zero and an incident angle of laser beams L2, L3 of cyan and magenta to the reflection face of the polygon mirror 6 is made to be smaller than an incident angle of a laser beam L4 of yellow having the lowest visibility. One mirror 21a is disposed on the optical path of the laser beam L1, three mirrors 22a-22c are on the optical path of the laser beam L2, two mirrors 23a, 23b are on the optical path of the laser beam L3, and three mirrors 24a-24c are on the optical path of the laser beam L4 of yellow. In the laser beams L1-L4 for four colors to be used for forming a color image, a relative error of scanning positions in the sub-scanning direction of the laser beams L1-L3 of three colors excluding the laser beam L4 of yellow having the smallest visibility is made to be the minimum. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To stabilize a carrying passage of a plurality of paper sheets with a compact size while a paper feeding mechanism of a roll paper sheet and a cut paper sheet is juxtaposed. SOLUTION: A paper feeding roller 13 feeds a paper sheet set in a paper tray 11 into a paper guide 23. The paper feeding roller 13 is provided with a function as a roll of a roll paper sheet P2. A paper reverse guide 21 is used for guiding the cut paper sheet P1 fed from the paper feeding roller 13 to an upper side so as to invert the face and back thereof. A driven roller 22 is used for forming the carrying passage between the driven roller 22 and an outer peripheral surface of the paper feeding roller 13, and for guiding the cut paper sheet P1 to the paper guide 23. A paper guide 24 guides the paper feeding roller 13 to the cut paper sheet P1 and the roll paper sheet P2 fed from the paper feeding roller 13 to a printing part 30. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an ink jet printer in which a decision is made through a simple arrangement whether the height of the ink head in an ink cartridge from the surface of a sheet is altered correctly by an operating lever depending on the thickness of the sheet. SOLUTION: A stopper 7c is provided on the base body 7a of an operating lever 7 for moving an ink carriage 1 mounting an ink cartridge 3 selectively between a lower position corresponding to a plain paper and an upper position corresponding to a cardboard. Using a residual quantity of ink sensor 41 for detecting the reference position G of the ink carriage based on abutting or non-abutting of a protrusion 1c on the ink carriage against the stopper, the lower position or the upper position is judged based on the distance L1, L2 from the reference position to a position where the protrusion abuts against the stopper or one wall face of the ink jet printer body 51. Image processing is carried out only if the thickness of a sheet having conditions set when image formation is requested from a host, and the height of the ink head from the surface of a sheet altered depending on the thickness of the sheet are appropriate. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a paper delivery detector for an ink jet printer reducing cost by the common use of parts and improving accuracy in detecting the full state of recording paper. SOLUTION: In the paper delivery detector 6 for the ink jet printer provided with a delivery tray 4 receiving the recording paper P delivered in the upward state of an image formed face, sequentially at the front end in the delivery direction, a plurality of stiffening arms 5 are provided in a freely advancing/retreating manner in the delivered direction of the recording paper between adjacent delivery rollers 29, 29 and star rollers 29a on the rear side in the delivered direction of the recording paper rather than the star rollers 29a. The tip lower face of the stiffening arm positioned at the center in the scanning direction of the recording paper is provided with a full state detecting sensor 60 for detecting the full state by abutting on the rear end face of the recording paper delivered to a delivery tray. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an ink jet printer capable of appropriately guiding printed paper to a delivery part without soiling the printed surface. SOLUTION: A paper delivery roller 108 arranged downstream of a printing position in a paper conveying path R arranged from a paper feeding tray 103 to a discharge tray 109 via the printing position located between a printing head 13 and a platen 102 is arranged on the opposite side to the printing head 13 with the paper conveying path R held between, and the paper delivery roller 108 is provided with a suction means for sucking paper to perform appropriate paper delivery processing, eliminating contact between the printed surface and the paper delivery roller 108. COPYRIGHT: (C)2004,JPO&NCIPI