摘要:
This invention relates to a single component toner comprising specified polyester resins as binder resin and used in single-component developing system in which toner particles are electrically charged when passing through the opening between a toner-levelling member and a toner-transporting member positioned against a photosensitive member.
摘要:
A developer contains a set of color toners and black toner for use in a full color image forming apparatus. Each of the color toners contains a color colorant and a first binder resin, and the black toner contains a black colorant and a second binder resin. The difference between softening point and flow starting temperature of said first binder resin is less than the difference between softening point and flow starting temperature of said second binder resin.
摘要:
An image region dividing apparatus includes a same-kind image region extraction unit for dividing a digital image into blocks by extracting boundaries, from the background, of regions where same kinds of images are present, from the digital image; horizontal and vertical difference detectors for obtaining the difference values of the luminance levels of adjacent pixels in the horizontal and vertical directions from a discrimination target block; a feature pattern discrimination unit for performing recognition processing on the basis of a correlation between the shapes of a calculated corrected luminance level histogram ys and a calculated gradient vector direction histogram .theta.r; and an image kind determination unit for determining image kinds. The apparatus performs image kind discrimination of each discrimination target block.
摘要:
A marker detecting section detects markers formed at four corners of a block using binary image data of a two-dimensional code stored in a data memory. A marker's approximate center calculating section calculates the approximate centers of the detected markers. A pattern code detecting means detects a pattern code in accordance with format information of the two-dimensional code stored in a format memory. A marker's real center calculating section calculates the real centers of the markers from the detected pattern code and the format information using the error minimizing method. Based on the calculated real centers of the markers, a data code reading coordinate calculating section calculates reading coordinates for reading data dots of address code and data code areas from the data memory.
摘要:
In a system for converting multimedia information to an optically readable code, printing/recording the code on an information recording medium, and reading the code to restore it to the original multimedia information, a read unit optically reads the code. A decoding unit demodulates the code read by the read unit and outputs demodulated data. A reproduction unit performs processing associated with error correction in units of partial data chunks each consisting, as a unit of an aggregate of a predetermined amount of demodulated data output from the decoding unit. An output unit acquires a predetermined number of partial data chunks output from the reproduction unit to form final output data and outputs the data as the recognizable original multimedia information. An error partial data chunk detection units detects an omitted portion or a portion for which error correction by the reproduction unit has failed as an error partial data chunk in units of partial data chunks output from the output unit. A data change unit recognizes the error partial data chunk detected by the error partial data chunk detection unit and changes data of a portion corresponding to the error partial data chunk.
摘要:
A fault tolerant computer which executes the cache flush operation at a high speed and has the real time characteristic. A processor module 301 is equipped with a cache memory so that the entry address of the updated cache block within the cache memory is stored in a stack. The cache flush is effected only with respect to the entry address in the stack when a recovery-point setting condition due to a timer or the like is satisfied. A memory module 303 has an arrangement doubled in the same storage physical space and is equipped with a buffer memory for temporarily storing the transferred cache block, so that the cache block is simultaneously transferred to a pair of buffer memories.
摘要:
The present invention relates to a negatively chargeable toner comprising at least a binder resin, carbon black, and charge controller, wherein said charge controller is a colorless or white in color boron compound, and wherein a melt viscosity curve of said negatively chargeable toner has an inflection point of a viscosity slope, an inflection point temperature (T.sub.2) existing within a temperature range of T.sub.1 +20.degree. C. to T.sub.1 +40.degree. C. relative to a flow start temperature (T.sub.1), a first absolute value (.DELTA..eta..sub.1) existing within a range of 4.0.times.10.sup.-2 to 6.0.times.10.sup.-2, said first absolute value. (.DELTA..eta..sub.1) being a mean viscosity slope within a temperature range below the inflection point temperature (T.sub.2), a second absolute value (.DELTA..eta..sub.2) existing less than 2.0.times.10.sup.-2, said second absolute value (.DELTA..eta..sub.2) being a mean viscosity slope within a temperature range higher than said inflection point temperature (T.sub.2) is less than 2.0.times.10.sup.-2, and a temperature difference between said inflection point temperature (T.sub.2) and a flow stop temperature (T.sub.3) being 5.degree. C. or more.
摘要翻译:本发明涉及至少包含粘合剂树脂,炭黑和充电控制器的带负电荷的调色剂,其中所述充电控制器是无色或白色的硼化合物,并且其中所述带负电荷的调色剂的熔体粘度曲线具有 粘度斜率的拐点,相对于流动开始温度(T1)存在于T1 + 20℃至T1 + 40℃的温度范围内的拐点温度(T2),第一绝对值(DELTA eta 1)存在于4.0×10 -2至6.0×10 -2的范围内,即所述第一绝对值。 (DELTA eta 1)是低于拐点温度(T2)的温度范围内的平均粘度斜率,小于2.0×10 -2的第二绝对值(DELTA eta 2),所述第二绝对值(DELTA eta 2)为 在高于所述拐点温度(T2)的温度范围内的平均粘度斜率小于2.0×10 -2,所述拐点温度(T2)和流动停止温度(T3)之间的温度差为5℃。 或者更多。
摘要:
The negatively chargeable toner of the present invention includes a boron compound expressed by the chemical structural formula (A): ##STR1## wherein R.sub.1 and R.sub.3 respectively represent substituted or non-substituted aryl group, R.sub.2 and R.sub.4 respectively represent hydrogen atom, alkyl group, substituted or non-substituted aryl group, X represents a cation, and n is an integer of either 1 or 2; to improve charge rise characteristics and charging stability.
摘要:
A toner produced by pulverizing and classifying a melt and kneaded mixture comprising a binder resin, a colorant and an offset preventing agent, said binder resin comprising a styrene-type copolymer and said offset preventing agent comprising a polypropylene having a softening point of 135.degree. to 155.degree. C. and a polyethylene having a softening point of 100.degree. to 150.degree. C., wherein a total amount of said polypropylene and said polyethylene is 2 to 10 parts by weight per 100 parts by weight of the binder resin and a weight ratio of said polypropylene to said polyethylene is 1:3 to 1:1, and said pulverizing and classifying carried out by a pulverizer and classifier which impart mechanical impact on a particle to be treated.