Abstract: Disclosed is a multi-color transfer image forming method, which comprises subjecting a colored image forming material having a coloration recording layer comprising at least two layers and containing a photosensitive material and a colorant on a support to aqueous development after imagewise exposure, thereby forming a colored image, transferring the colored image to an image receiving member through the outermost surface of the coloration recording layer and then transferring at least one colored image with different hue onto the same image receiving member in conformity with the colored image, characterized in that the layer of the coloration recording layer remotest from the support is a layer adherable to the image receiving member, and only the colored image portion is transferred onto the image receiving member to have the image receiving member surface exposed at the non-image portion of the multi-color image.

Abstract: In a data recording operation, various patterns each having n edge widths (n is an integer), which are considered to appear in the operation, are predicted such that a record pattern sequence including the various patterns is recorded before an actual data recording operation. Using a read-out signal thereof, a shift quantity of each edge of the read-out signal with respect to an inherent edge record position is attained, thereby generating a table containing relationships between the respective patterns and the edge shift quantities. During an actual data recording operation, a record signal of the data is collated in a unit of the n edge widths with the patterns stored in the table so as to correct the edge width.

Abstract: When record marks are recorded on a recording medium while making a code symbol "1" of data by obtained coding write information according to a coding system having no DC free property correspond to every edge of the record marks, the recording is effected while inserting resynchronizing signals into the write information with a constant interval. For the resynchronizing signal either one selected between a first resynchronizing code pattern, in which the number of symbols "1" contained therein is even, and a second resynchronizing code pattern, in which the number of symbols "1" is odd, so that an accumulated charge obtained from the run length of the coded data approaches zero is used. Each of the first and the second resynchronizing code pattern contains at least a specified pattern, which doesn't meet the coding rule.

Abstract: The present invention is to solve a variety of problems relative to conventional lactitol crystals and relates to a trihydrate crystal of lactitol having a molecular formula C.sub.12 H.sub.24 O.sub.11.3H.sub.2 O and a melting point of 52.degree.-56.degree. C., a crystalline mixture solid containing it and a process for producing them.

Abstract: An automatic equalization apparatus useful for supplying an output signal of a transversal filter simultaneously to two juxtaposed comparators, one of the two comparators performing signal identification, the other of the two comparators detecting an equalization error with the reference level changed, and extracting data from resultant two kinds of data trains by taking at least (N-1)/2+1 bits as the unit, N being the number of taps of the transversal filter, performing correlation computation, and setting tap coefficients of the transversal filter on the basis of the resultant accumulated value.

Abstract: The present invention is to solve a variety of problems relative to conventional lactitol crystals and relates to a trihydrate crystal of lactitol having a molecular formula C.sub.12 H.sub.24 O.sub.11 .multidot.3H.sub.2 O and a melting point of 52.degree.-56.degree. C., a crystalline mixture solid containing it and a process for producing them.

Abstract: A photosensitive planographic printing plate comprises an aluminum or aluminum alloy plate having an anodic oxidation layer obtained by the anode oxidation in an electrolyte of phosphoric acid or in an electrolyte of mixed acid but containing the phosphoric acid as a main component, and a layer of photopolymerizable photosensitive composition overlaid on the Al or Al alloy plate and containing a polymer binder having a carboxylic acid residue or carboxylic acid anhydride residue, an addition polymerizable unsaturated compound and a photopolymerization initiator.

Abstract: A thread chain guiding device provides a needle-thread-guide plate which extends underneath a throat plate by energizing a solenoid as needed. Thus, the needle-thread-guide plate pushes the needle threads twined around a lower looper outwardly away such that the thread chain is prevented from hanging on an inner chain-off finger when it is rotated counter clockwise. The needle-thread-guide plate is retracted during a normal stitching process by de-energizing the solenoid.

Abstract: A developer composition for a lithographic printing plate provided with a coated layer composed of a photosensitive polymer having in the main chain thereof groups of formula (I) ##STR1## wherein X and Y independently represent hydrogen, halogen, cyano or nitro and n is an integer of 1 or 2, comprising:(A) benzyl alcohol,(B) tetrahydrofurfuryl alcohol and(C) at least one acid selected from the group consisting of a mineral acid, an organic carboxylic acid and an organic sulfonic acid.

Abstract: A presser foot lift device for an upper feed sewing machine is so arranged that an upper feed tooth is initially lifted and then lifted along with a presser foot only after the lower surface of the upper feed tooth is at a position above the upper surface of the presser foot. This two-step lifting motion is made feasible by the combined operation of an elongated slot formed in a manually rotated actuating arm and a pin formed on an actuator pivotally mounted in coaxial fashion on a supporting shaft of the actuating arm and so adapted as to be introduced into the elongated slot.

Abstract: A photopolymerizable photosensitive composition characterized by comprising a photopolymerizable photosensitive resin having polyfunctional ethylenically unsaturated groups in the side chains or end groups thereof, and a photopolymerization initiator.

Abstract: A developer composition for a lithographic printing plate provided with a coated layer composed of a photosensitive polymer having in the main chain thereof groups of formula (I) ##STR1## wherein X and Y independently represent hydrogen, halogen, cyano or nitro, and n is an integer of 1 or 2, comprising ethylene glycol monophenyl ether and at least one acid selected from the group consisting of a mineral acid, an organic carboxylic acid and an organic sulfonic acid.