Abstract: A printing apparatus drive control method is provided which allows the user to select a drive mode in which a printing apparatus can be operated with reduced operation noise whatever print mode is set, such as a fine print mode or a fast print mode, thus eliminating a problem of emitting noisy operation sound to surroundings late at night when a level of noise is comparatively low. One or more of a plurality of motors, which cause a plurality of driven portions in the printing apparatus, such as paper supply unit, main scan unit and paper feed unit, to perform predetermined operations, can be driven in a normal drive mode or a silent drive mode selectively.

Abstract: A recording apparatus can mount a special recording material, such as a compact disc (CD) or the like, in a state of being accommodated in a tray and perform recording on the special recording material. In this recording apparatus, by an operation of mounting a tray guide into the main body of the recording apparatus, an arm of the tray guide is inserted between a spur base for holding a spur, and a platen for holding sheet discharge rollers. The spur base thereby raises to separate the spur from the sheet discharge roller, and a space to allow passage of the tray is formed.

Abstract: An ink jet recording apparatus using ink to be discharged from a plurality of ink discharge ports of a recording head comprises a holding unit for holding the recording head for recording on a recording sheet; a conveyor for conveying the recording sheet; and a recording sheet supporting member arranged at the position to face the recording head. The recording sheet supporting member is provided with a supporting surface to support the non-recording surface of the recording sheet, and is arranged in a direction intersecting the conveying direction of the recording sheet.

Abstract: A printing apparatus drive control method is provided which allows the user to select a drive mode in which a printing apparatus can be operated with reduced operation noise whatever print mode is set, such as a fine print mode or a fast print mode, thus eliminating a problem of emitting noisy operation sound to surroundings late at night when a level of noise is comparatively low. One or more of a plurality of motors, which cause a plurality of driven portions in the printing apparatus, such as paper supply unit, main scan unit and paper feed unit, to perform predetermined operations, can be driven in a normal drive mode or a silent drive mode selectively.

Abstract: A recording apparatus for recording on a recording sheet by recording means comprises a conveying roller for conveying a recording sheet on the upstream side of recording means in the recording sheet conveying direction, plural discharging rollers for conveying a recording sheet on the downstream side of recording means in the recording sheet conveying direction, and a common driving source for driving the plural discharging rollers. For this recording apparatus the driving force of the driving source is transmitted first to a discharging roller on the outermost downstream side in the recording sheet conveying direction. With the structure thus arranged, this recording apparatus is capable of forming images in good condition on the rear portion of a recording sheet by enhancing the conveyance precision only by use of discharging rollers without any significant cost increase for a recording apparatus provided with plural discharging rollers.

Abstract: An ink jet recording apparatus using ink to be discharged from a plurality of ink discharge ports of recording means comprises holding means for holding recording means for recording on a recording sheet; conveying means for conveying the recording sheet; and recording sheet supporting member arranged in the position to face the recording means which is provided with supporting surface to support the non-recording surface of the recording sheet, and arranged in the direction intersecting the conveying direction of the recording sheet. The recording sheet supporting member is provided with a first extrusion and a second extrusion extended in the conveying direction of the recording sheet, at the same time, having the inclined surfaces becoming lower to the recording sheet supporting member from the supporting surface toward the upstream side in the conveying direction, and the angles of inclination are made different for the inclined surfaces of the first extrusion and the second extrusion.

Abstract: A sheet transport device and a recording apparatus include a transport roller constructed as a unit including a first gear and a protective member both integrally mounted on its rotary shaft, thereby ensuring easy handling, an inexpensive cost, good efficiency of assembly work, and high reliability. A transport roller gear (first gear) is provided at one end of the transport roller, and a substantially umbrella-shaped gear cover (protective member) is mounted to the outer side of the transport roller gear. The transport roller is constructed as a unit (transport roller unit) including the transport roller gear and the gear cover both integrally mounted on its rotary shaft. With this unitary structure, the transport roller can be easily handled, simply assembled into an apparatus body, and assembled with higher efficiency. The gear cover protects the least necessary gear(s), e.g., only the transport roller gear on the transport roller, and hence can be provided at an inexpensive cost.

Abstract: An ink jet recording apparatus using ink to be discharged from a plurality of ink discharge ports of recording means comprises holding means for holding recording means for recording on a recording sheet; conveying means for conveying the recording sheet; and recording sheet supporting member arranged in the position to face the recording means which is provided with supporting surface to support the non-recording surface of the recording sheet, and arranged in the direction intersecting the conveying direction of the recording sheet. The recording sheet supporting member is provided with a first extrusion and a second extrusion extended in the conveying direction of the recording sheet, at the same time, having the inclined surfaces becoming lower to the recording sheet supporting member from the supporting surface toward the upstream side in the conveying direction, and the angles of inclination are made different for the inclined surfaces of the first extrusion and the second extrusion.

Abstract: The present invention provides a sheet conveying apparatus comprising a sheet support for supporting a sheet, a convey rotary member disposed downstream of the sheet support in a sheet conveying direction to convey the sheet supported by the sheet support, and a driven rotary member disposed in a confronting relation to the convey rotary member to be driven by the convey rotary member. Wherein the sheet support can be shifted so that, when the sheet supported by the sheet supporting means is urged toward a downstream side in the sheet conveying direction, a tip end of the sheet is directed to a position in the vicinity of a nip between the convey rotary member and the driven rotary member.

Abstract: A polyoxymethylene composition is reduced in mold fouling, undergoes little discoloration in molten-state residence within the cylinder of a molding machine, has improved moldability, and is reduced in formic acid generation, when compounded with a sterically hindered phenolic antioxidant (a), of a polyamide (b), at least one metal compound selected among oxides and carbonates of magnesium or calcium (c) and a boron compound (d).

Abstract: In a printing apparatus, in which an automatic feeding mode and a manual feeding mode are set in feeding a printing medium, setting of state of feeding unit depending upon respective feeding modes is performed automatically in accordance with a command input relating to a size of the printing medium to be used.

Abstract: An automatic sheet feeding apparatus includes a sheet supporting device for supporting a sheet; an auxiliary roller for feeding a sheet supported on the sheet supporting device; a separating device, having a separation roller and a friction separation device, for feeding one-by-one the sheet; a feeder for feeding the sheet separated by the separating means; auxiliary roller moving device for moving the auxiliary roller between an operative position where the auxiliary roller is in contact with the sheet and an inoperative position where it is away therefrom; a separation roller moving device for moving the separation roller between an operative position where the separation roller is in contact with the friction separating device and an inoperative position where the separation roller is away therefrom; wherein the auxiliary roller moving device and the separation roller moving device move the auxiliary roller and the separation roller from their operative positions to inoperative positions after the feeder s

Abstract: A printing device including a central processing unit, a first memory, a keyboard for inputting characters forming words, and symbols, which are stored in the first memory, a second memory, a printer, and an eraser. The printer prints the information stored in the first memory. The central processing unit determines whether a word printed by the printer means before the commencement of the printing of the next word is correctly spelled. The second memory contains a dictionary used by the central processing unit to determine whether the spelling of the word printed by the printer is correct. The eraser erases a part of or the entire printed word in response to the central processing means determining that the printed word is misspelled.

Abstract: A sheet feeding apparatus has an automatic sheet supply mode in which a sheet is fed from sheet supporting devices supporting a sheet stack thereon to sheet conveying devices disposed downstream thereof by sheet feeding devices, and a manual mode in which a manual sheet is abutted against the sheet conveying devices and supplied. The sheet fed by the sheet feeding devices is operated also in the manual mode.

Abstract: A carriage on which an ink tank is mounted is moved acceleratively. Next, under this accelerative movement, a period of time spent moving a designated distance is measured. Finally, the amount of ink fluids in the ink tank is detected by the measured period of time and a message related to the amount of ink fluids is displayed. With these procedures, in an ink jet recording apparatus in which the ink tank for storing ink fluids to be supplied to the recording head is mounted on the carriage, the amount of ink fluids remaining in the ink tank can be detected using simplified structure.

Abstract: Polyoxymethylene compositions exhibiting improved heat stability and reduced formation of mold depositions during molding are usefully employed to form molded articles used as parts for electrical or electronic equipment since such parts experience few malfunctions due to formic acid generated from the composition. The preferred composition includes a blend of 100 parts by weight of polyoxymethylene resin with (a) 0.01 to 5.0 parts by weight of an antioxidant, (b) 0.01 to 5.0 parts by weight of a melamine-formaldehyde polycondensate, and (c) 0.001 to 10 parts by weight of at least one metallic compound selected from magnesium oxide, magnesium carbonate, and calcium oxide.

Abstract: A polyoxymethylene composition which is remarkably improved in heat stability, little stains molds even in long-term continuous molding and little generates formaldehydic stench in molding, and which comprises a polyoxymethylene and, added thereto, 0.01 to 5% by weight of an antioxidant and 0.01 to 10% by weight of a melamine-formaldehyde polycondensate, each based on the polyoxymethylene, characterized in that the melamine-formaldehyde polycondensate used is one which is prepared mainly from melamine and formaldehyde and contains 2.0 to 10 moles of the melamine units on the average per mol of the melamine-formaldehyde polycondensate, wherein the mean mole number of hydrogen bonded to 3 moles of the amino groups contained in 1 mole of melamine is 3.0 moles or above.

Abstract: Polyoxymethylene molding compositions include a polyoxymethylene base resin and contain, based upon the weight of the polyoxymethylene base resin, between 0.01 to 5% by weight of a hindered phenolic antioxidant, and between 0.01 to 5% by weight of an amine polymer having a molecular weight of at least 1000 and comprised essentially of structural units of the following formula (1): ##STR1## wherein R represent a hydrogen atom, an alkyl group, a phenyl group, an alkyl-substituted phenyl group, an NH.sub.2 group directly bonded to the carbon atom, or --X--NH.sub.2 -- where X represents an alkylene group, a carbonyl group, a carboxyalkylene group, an alkyleneoxycarbonylalkyl group, a phenylene group, an alkyl-substituted phenylene group, an amido group or an alkyleneamido group.

Abstract: A printing apparatus including a print mechanism for printing key-input print information; an eraser for erasing a character or symbol printed on a recording medium with the print mechanism; a first memory for storing the key-input information; a second memory for storing information on a print object erased with the eraser; and an erasure controller for controlling the eraser in accordance with a comparison result between the erased object information stored in the second memory and the key-input information stored in the first memory.

Abstract: A polyacetal resin composition is prepared by melt-kneading a polyacetal resin (A) (99 to 40 wt. %) with a thermoplastic polyurethane (B) (1 to 60 wt. %) in the presence of a polyisocyanate compound, a polyisothiocyanate compound or a modification thereof (C) in an amount of 0.1 to 10 wt. % based on the total of A and B.