An image data producing apparatus for bit-developing processed image data includes a system processing memory and an variable capacity image data memory for storing bit-developed image data; control means is also included for changing the storage capacity of the image data memory

Image producing apparatus with memory unit having an image memory area of changeable storage capacity

PURPOSE:To provide a recording system which can improve the utilization efficiency of a power source capacity with the acceleration of a printing by covering as many sections as possible simultaneously in printing one line as long as the total number of heat generating bodies simultaneously energized does not exceed a specified value. CONSTITUTION:Printing circuits P1-P5 control the energization of heat generating bodies A1-Amn each belonging to sections B1-Bm separately according to printing control signals d1-d5. The heat generating bodies A1-Amn are lined up in the main scanning direction while the max. number of the heat generating bodies simultaneously energized is set at (k+n-1). At the same time, before the printing of one line, the distribution of black drawing element in the line involved is checked to ensure that the printing covers as many sections B1- Bm as possible simultaneously within such a range as to hold the total number of the heat generating bodies energized simultaneously within (k+n-1).

Heat sensitive recording system

The invention relates to a double-beam cantilever crane. The double-beam cantilever crane comprises a fixing base. The fixing base is provided with a motor A and a gear. An output shaft of the motor A is connected to an input shaft of a reduction gearbox. The upper part of the gear is provided with a telescoping column. The lower part of the telescoping column is provided with a controller. The top of the telescoping column is provided with a fixing block. Left and right sides of the fixing block are symmetrically provided with a main beam A and a main beam B. The main beam B comprises a telescoping rod. The upper part of the telescoping rod is provided with a levelness tester. The tail end of the telescoping rod is provided with a motor B. The motor B is connected to a lifting pulley. The lifting pulley is connected to a pulley block. The lower part of the pulley block is provided with a suspension hook. The lower part of the telescoping rod is provided with a connection block A. The connection block A is connected to a hydraulic rod. The double-beam cantilever crane has the advantages of simple structure, reliable operation, low cost and good economy.

Double-beam cantilever crane

PURPOSE:To eliminate the interruption of the transmission information due to the congestion of a system and to decrease the frequency of retransmission, by sending out a time filler when the next transmission data does not exist after the end position equivalent to a line of the transmission data is detected. CONSTITUTION:When the picture information is transmitted to a terminal T1 from a terminal T2, a facsimile storage exchange EX stores once the received picture information (a) in a storage device F and then transmits the stored picture information (b) to the terminal T1. When an end position EOL of the picture information equivalent to a line is detected in the transmission data, whether or not the position EOL shows the end of the data equivalent to a page. If the EOL does not show the end of the data of a page and no transmitting request is given for the next transmission data, an end mark EOL of the picture information equivalent to a page is transmitted and then a time filler is sent out for maximum 5sec until the transmitting request is given for the next transmission data.

Data transmission controlling system

PURPOSE:To improve the encoding and decoding speed to decrease the transmission time and preventing surely the overflow of a buffer memory at the receiving side, by inserting a suitable file bit so that the encoding speed does not exceed the decoding speed at the transmission side. CONSTITUTION:Document and picture information is read at a reader 11 at the transmission side, the redundancy of the information is eliminated by a coder 12 and coded, and stored once in a buffer memory 13. Further, the coded data demodulated by an MODEM 24 at the receiving side is stored once in a buffer memory 23, and the data decoded by a decoder 22 is applied to a recorder 21. The decoding speed VD of the decoder 22 and a memory size MR of the memory 23 at the receiving side are informed to the transmission side at the protocol procedure. Further, the file bit is inserted between the memory 13 and the coder 12 with a control signal, allowing to prevent surely the overflow of the memory 23 at the receiving side and to reduce the transmission time.

Transmission control system of facsimile

PURPOSE:To perform the signal transmission of facsimile efficiently even if the buffer memory capacity of transceiver is different, by constituing that the monitor of remaining buffer memory of the reception side can be made at the transmission side. CONSTITUTION:The facsimile signal from the signal read-in section 1 is fed to the buffer memory 4 via the coder 2 and fed to the recording time measuring section 3 counting the code length every scanning line and required recording time. The reception side buffer memory remaining amount detector 11 receives the signal from the measuring section 3 and the coder 2 and detects the remaining amount of the reception side buffer memory 8, and when this remaining amount is zero, the dummy signal from the code generator 6 is inputted to the buffer memory 4. The buffer memory remaining amount monitor section 5 at the transmission side controls the operation of the coder 2 so that the buffer memory 4 is not overflowed.

Encoded transmission system of facsimile signal

PURPOSE:To provide a high speed constant thickness recording with controlled input voltage to heating element without increasing power requirement by determing the number of heating element for recording at a time with reference to black signals in the selected block CONSTITUTION:Picture signal for one scanning line is divided into several blocks made of pre-determined number of signals in accordance to arrayed order on scanning lines With thus formed block as a unit, and image signal of pre-determined amount is formed If a block includes a black image element in image signal series, the block is selected If the black image element exceeds the pre-determined quantity, heating element equivallent to the black image element in the above selected block is electrically driven If not exceeding the pre-determined quantity, all of heating element equivallent to all of black signals in the block are simultaneously driven Thereafter heating element equivallent to unrecorded black signals are electrically driven

Deiving method for heating sensitive recording head

PURPOSE:To enhance the recording speed without increasing the taking out line by dividing the heating elements on one scanning line into blocks every fixed number in the heat sensitive recording scanning system and recording the black image element in the block and the black image elemnt in other block simultaneously. CONSTITUTION:16 Image elements on one line are divided into four blocks of B1, B2, B3, B4. When the block B1 is recorded, the position of the black image element searches for the same other block B3, and makes the fourth block conductive and exothermic. After the recording is completed, the image signal for this image element is converted into the white level. Then, B4 block having black at the same position as the block B2 is sought for and the blocks B2 and B4 are conductive and recorded simultaneously. Similarly, the blocks B3 and B4 are simultaneously recorded. The number of lines taken out from the heat sensitive head is four as for the image element input terminal and 4 as for the control terminal, which totals 8. Accordingly, about half the number of lines of 17 are required for driving every image element, conventionally.

Recording scanning system

PURPOSE:To prevent the waste of time to realize speed up by dividing the picture element signals of one scanning line into plural groups classifying them in the order of scanning, discriminating picture element signal groups to be recorded and flowing current only through corresponding heat generating elements selectively. CONSTITUTION:When using a heat sensitive recording head with plural heat generating elements which correspond respectively to the picture elements forming one scanning line of picture signals, flowing current selectively through heat generating elements corresponding to the signals and making them record on head sensitive recording paper, the picture element signals are classified in scanning order, for example, the signal rows of the first line G1, G3, G5 into (White, White, White), (Black, Black, White), (White, White, White), and the second line G2, G4, G6 (Black, Black, Black), (White, White, White), (White, White, White). And each line is discriminated whether it includes a black signal or not, is jumped when it does not include the black one, and thus lines are selected in sequence. And heat generating elements corresponding to the signals are selected, are flows current simultaneously group by group and these are recorded in sequence.

Method of driving heat sensitive recording head

PURPOSE:To realize an accurate picture regeneration even in case the scanning time may be changed with every scanning line by reading out the time T required for recording from the picture signals equivalent to one scanning line and then carrying out encoding of the picture signal in the time longer than time T CONSTITUTION:The picture signals equivalent to one scanning line which are read out at signal reading part 1 are code-converted through encoder 2, and at the same time the necessary recording time is calculated at record time measurement part 10 When the encoding of the picture signals is over through encoder 2, the code is sent to buffer memory 3 The code is then read out from memory 3 with a fixed speed and then sent to the circuit Memory rest amount monitor part 4 discontinues the encoding action when memory 3 becomes close to its overflow state, and then gives a command to transmit the idle dummy code At receiver R the code sent from circuit 6 is memorized in buffer memory 7, and the code is drawn out according to the memorizable speed with every scanning line As a result, an accurate picture regeneration is possible even though the record scanning time may be changed

Semasa Takayoshi

Papers

Encoded transmission system of facsimile signal

Deiving method for heating sensitive recording head

Recording scanning system

Method of driving heat sensitive recording head

Facsimile signal transmission system