摘要:
A recording apparatus includes a plurality of recording elements a plurality of drive ICs, in which a plurality of drive signal lines containing a signal line for an image data signal and a signal line for a transfer clock which transfers the image data signal are connected in cascade. Each drive IC supplies a recording current selectively to the recording elements in correspondence to the image data signal. A transfer clock control circuit, which is located at an input part of the transfer clock in the recording apparatus, controls a duty of the transfer clock supplied to the drive ICs so that a duty ratio of the transfer clock at the final stage of the plurality of drive ICs is enough to transfer the image data signal.
摘要:
A recording head system for an ink jet recording apparatus having a full-line recording head. The recording head is divided into a variable number of blocks. The recording ratio of each block (that is, the ratio of the number of ink ejecting elements to be driven in a block in accordance with recording data to the total number of the ink ejecting elements in the block) is compared with a reference recording ratio. When the recording ratio is greater than the reference recording ratio, the interval between the drive timing of a block and that of the next block is lengthened, or vise versa. This is performed by controlling the enable timing of each block by D-flip-flops, AND gates and delay circuits. Unevenness of recorded images resulting from the fluctuation in periodic ink pressure can be ameliorated.
摘要:
A recording head has a substrate on which a plurality of heat generating elements as recording elements are arranged and a plurality of driving integrated circuits (driving ICs) to drive the plurality of heat generating elements are supported. The recording head comprises wirings which are extended from the heat generating elements and pass through a region on the substrate on which the driving ICs are supported and are connected to the driving ICs; signal series wirings which are arranged on the heat generating element side of the substrate, are closer to the heat generating elements than terminals for the wiring connection, and serially connect the driving ICs; and conductors which are formed in a region on the substrate between the adjacent driving ICs and connect recording current to the ground.
摘要:
A recording apparatus performing image recording on a recording medium by driving a recording head having a plurality of recording elements. The recording apparatus has a storing device and a driving device. The storing device prestores a drive condition for each respective one of blocks which are formed by dividing the recording elements into a plurality of groups. The driving device simultaneously drives the recording elements in the same block according to the drive condition read from the recording device. In a preferred embodiment, the recording apparatus has recording portions each of which prerecords a pattern representing an index of energy to be fed to the electrothermal transducers of each respective one of the blocks, and a read device for reading out the index of energy from the recording portion via driver circuit.
摘要:
A recording method causes recording on a recording material by ejection of ink, wherein after electric power sufficient to eject the ink is supplied to a recording device to effect recording in a predetermined region, electric power insufficient to eject the ink is supplied to the recording device.
摘要:
A liquid injection recording head includes an integrated drive circuit a recording current energization time for electrothermal conversion elements. The setting circuit has a counter. The recording current energization time data can be set in the counter in the setting circuit in synchronism with a signal obtained by frequency-dividing a recording data transfer clock or with this clock signal supplied to a circuit arranged in the integrated drive circuit to align recording data.
摘要:
An ink jet recorder includes a plurality of recording elements which are arranged corresponding to each of a plurality of ejection outlets for ejecting ink in accordance with driving signals, a plurality of ejection passages corresponding to the ejection outlets and connected to a common chamber, a plurality of driving blocks formed by dividing the recording elements by predetermined number of units in the arrangement order, control elements for each of the driving blocks and for controlling the recording elements associated with each driving block in a simultaneous driving manner, a selection unit for selecting the driving block to be driven in order that at least adjacent driving blocks are not driven in sequence, and a supply unit for supplying driving signals to the driving block selected by the said selecting unit. With this arrangement, ink in ejection passages associated with a driving block adjacent the selected driving block will not be significantly affected when the selected driving block is driven.
摘要:
An ink jet recorder includes a plurality of recording elements which arranged corresponding to each of a plurality of ejection outlets for ejecting ink in accordance with driving signals, a plurality of ejection passages corresponding to the ejection outlets and connected to a common chamber, a plurality of driving blocks which formed by dividing the recording elements by predetermined number of units in the arrangement order, control elements for each of the driving blocks and for controlling the recording elements associated with each driving block in a simultaneous driving manner, a selection unit for selecting the driving block to be driven in order that at least adjacent driving blocks are not driven in sequence, and a supply unit for supplying driving signals to the driving block selected by the said selecting unit. With this arrangement, ink in ejection passages associated with a driving block adjacent the selected driving block will not be significantly affected when the selected driving block is driven.
摘要:
A recording head comprises a plurality of heat generating elements and a plurality of storing regions, corresponding to the plurality of heat generating elements, for storing recording data. Driving circuitry supplies electric power sufficient for recording to corresponding heat generating elements when the recording data stored in the storing regions are first data and supplies electric power insufficient for recording to corresponding heat generating elements when the recording data stored in the storing regions are second data.
摘要:
A printing head has a plurality of heater boards, each of which includes a shift register to which printing data and selection data for selecting preheating pulse signals are applied as inputs, a latch circuit for latching the printing data, a selection-data latch circuit for latching the selection data, a selection circuit for selecting any one of a plurality of preheating pulse signals inputted in accordance with the latched selection data, and a plurality of heating resistors driven by the printing data or preheating pulse signals. Correction data, obtained by a head correcting apparatus, for performing printing at an average density by correcting the characteristics of each heater board is stored in a memory of the printing head. A printing apparatus decides the selection data in accordance with the correction data and sets the selection data in the selection-data latch circuit.