摘要:
In a document transport apparatus for an image forming system, a pair of trays are provided above the glass platen of the image forming system. A feed tray is spaced above the platen glass and is used to feed documents to be copied one at a time to the glass platen. A discharge tray is spaced above the feed tray for receiving the documents from the glass platen as the documents are copied. The discharge tray is automatically moved to a retracted position, out of the way of the feed tray, when the discharge tray is absent any documents.
摘要:
The present invention relates to a glass fiber-reinforced polycarbonate resin composition comprising: (A) 70 to 92% by weight of an aromatic polycarbonate resin; (B) 1 to 20% by weight of an aromatic polycarbonate oligomer; (C) 3 to 20% by weight of a glass fiber comprising a short glass fiber having a fiber length of not more than 140 .mu.m and a long glass fiber having a fiber length of more than 140 .mu.m; and (D) 0.5 to 15% by weight of a composite rubber-based graft copolymer, halogen content in said resin composition being not more than 0.5% by weight based on total weight of said resin composition.
摘要:
It is intended to provide an image forming apparatus capable of securing rotation transmission accuracy among input/output axes without giving stress to a holding portion despite shaft misalignment and without using material of high strength. A color printer 1 comprises a main body 2 and an image forming unit 30 removable from the main body 2. The main body 2 includes a gear 43 for receiving rotary driving force to the image forming unit 30 and a joint 45 and the image forming unit 30 has a coupling 36 for receiving rotary driving force from the main body 2. Furthermore, a joint holder section 43a for the gear 43 and the coupling 36 has a contact hole 47, and contact hole 36a, respectively and both ends of the joint 45 are inserted in those holes. The contact holes 47 and 36a are in not-twisted triangle pole shape and the joint 45 is in twisted triangle pole shape.
摘要:
A control circuit for a brushless electric motor includes a pulse width modulator for applying drive signals to a gate drive circuit according to from a current amplifier, multi-phase drive coils connected to the gate drive circuit through an inverter circuit, a comparator connected to the current amplifier, a flip-flop for applying output signals from the comparator and drive signals form the pulse width modulator, and a circuit portion for applying signals for switching the direction of rotation from the flip-flop to the gate drive circuit. A preceding signal for switching the direction of rotation is maintained in the flip-flop until the dead zone of the pulse width modulating circuit is elapsed and a new signal for switching the direction of rotation is generated in synchronism with a pulse signal produced by the pulse width modulating circuit so as to be supplied to the gate drive circuit.
摘要:
A brushless direct current electric motor includes a stator having plural stator teeth at prescribed tooth pitches, exciter coils on the stator, a rotor mounted for rotation in an opening of the stator and plural magnetic poles formed on the peripheral surface of the rotor. According to the invention, the magnetic pole pitch between any given adjacent ones of the magnetic poles is different from the magnetic pole pitches between adjacent ones of said magnetic poles neighboring both sides of the firstly-mentioned adjacent ones of the magnetic poles.
摘要:
An image forming apparatus includes a fixing member having a cylindrical or annular shape for fixing an image onto a sheet which is in pressure contact with an outer surface thereof; and a heating source for heating the fixing member to a fixing temperature. A duct is provided in a position facing the fixing member with respect to a width direction perpendicular to a circumferential direction of the fixing member and which has an inlet for taking in fine particles generated from the fixing member. An exhaust fan is provided inside the duct or in an outlet of the duct for generating an air flow going from the inlet to the outlet of the duct. A first filter member is provided upstream or downstream from the exhaust fan inside the duct and the first filter can trap the fine particles which flow through the duct getting on the air flow. A control section controls an amount of the air flow passing through the first filter member according to initial burst conditions under which the fine particles are emitted from the fixing member.
摘要:
A numerical controller capable of using G-code commands pursuant to ISO in a path table operation. Data of values L of a reference variable and positions of a controlled axis X on i th and (i+1) th lines are read from a path table and stored. Based on the i th and (i+1) th line data and an inputted value Lm of the reference variable, a motion path is obtained to output motion amounts of the controlled axis. Thereafter, an index i is updated, and the path table operation is performed in accordance with data in the path table and the inputted reference variable value. If a G-code is included in the read data during the path table operation, it is stored. When the reference variable value Lm reaches a reference variable value designated by a line in which the G-code is read, a command for the G-code is executed.
摘要:
It is intended to provide an image forming apparatus capable of securing rotation transmission accuracy among input/output axes without giving stress to a holding portion despite shaft misalignment and without using material of high strength. A color printer 1 comprises a main body 2 and an image forming unit 30 removable from the main body 2. The main body 2 includes a gear 43 for receiving rotary driving force to the image forming unit 30 and a joint 45 and the image forming unit 30 has a coupling 36 for receiving rotary driving force from the main body 2. Furthermore, a joint holder section 43a for the gear 43 and the coupling 36 has a contact hole 47, and contact hole 36a, respectively and both ends of the joint 45 are inserted in those holes. The contact holes 47 and 36a are in not-twisted triangle pole shape and the joint 45 is in twisted triangle pole shape.
摘要:
An electrical connector receptacle, which comprises an insulating housing; a plurality of parallel contacts arranged in said insulating housing; a plurality of parallel recesses provided in the inside of the housing top wall adjacent to the plug-receiving end for receiving the bent portions of contacts between the intermediate portions and the spring portions; a block-receiving opening provided in the housing rear portion; and a contact support block adapted to fit into the block-receiving opening. A process for manufacturing an electrical connector receptor, which comprises preparing an insulating housing and a plurality of contacts each having a fixing portion, an intermediate portion extending from the fixing portion at right angles, and a spring portion diagonally extending in the plug-receiving opening toward the housing rear end; preparing a contact support block; inserting the contact fixing portions through the contact block; and fitting the contact support block into the block-receiving opening so that each bent portion of the contact between the intermediate portion and the spring portion rests in the corresponding parallel recess.
摘要:
A spindle is subjected to speed control and contour control according to a path table in which the speed and the position of the spindle are stored in association with a time. A switchover command for starting a contour control during speed control and a time La at which the switchover is carried out are set in advance in the path table. When the time La is reached, a spindle speed Sa and a spindle position Xa corresponding to the time La are read. Then, a time Lb and a spindle position Xb for the start of the contour control, designated next, are read. A speed is obtained from the spindle speed Sa and a speed in a first path in the contour control so that the spindle position shifts from Xa to Xb in a period between the times La and Lb. The spindle is moved from the time La to the time Lb at the obtained speed according to a designated linear function.