Abstract: The present invention relates to a process for producing alicyclic hydrazine derivatives, tetrahydropyridazine and hexahydropyridazine which are useful as intermediate starting materials such as medicines and agricultural chemicals. Especially, the present invention provides; a process for producing an alicyclic hydrazine derivative or its hydrohalogenic acid salt, which comprises reacting a hydrazine hydrohalogenic acid salt with a doil compound or an alicyclic ether compound in the presence of an excessive inorganic acid existing in a free form or in the form of an acid addition salt; a process for producing tetrahydropyridazine from 1-aminopyrrolidine, which comprises oxidizing 1-aminopyrrolidine with an oxidizing agent to form tetrahydropyridazine; and a process for producing hexahydropyridazine, which comprises oxidizing 1-aminopyrrolidine with an oxidizing agent, synthesizing tetrahydropyridazine, and thereafter, hydrogenating the tetrahydropyridazine in the presence of a base.

Abstract: The present invention relates to a process for producing alicyclic hydrazine derivatives, tetrahydropyridazine and hexahydropyridazine which are useful as intermediate starting materials such as medicines and agricultural chemicals. Especially, the present invention provides;a process for producing an alicyclic hydrazine derivative or its hydrohalogenic acid salt, which comprises reacting a hydrazine hydrohalogenic acid salt with a diol compound or an alicyclic ether compound in the presence of an excessive inorganic acid existing in a free form or in the form of an acid addition salt;a process for producing tetrahydropyridazine from 1-aminopyrrolidine, which comprises oxidizing 1-aminopyrrolidine with an oxidizing agent to form tetrahydropyridazine; anda process for producing hexahydropyridazine, which comprises oxidizing 1-aminopyrrolidine with an oxidizing agent, synthesizing tetrahydropyridazine, and thereafter, hydrogenating the tetrahydropyridazine in the presence of a base.

Abstract: A scanner set-up simulation unit is connected to a color scanner which comprises a reading head for reading an image information of the color original wound on a reading drum and for producing color separation signals, a first gradation correction circuit for correcting a gradation of the color separation signals, and an exposure head for exposing color separation films wound on a recording drum based on the corrected color separation signals output from the first gradation correcting circuit. The simulation unit comprises a level adjusting circuit for adjusting the white and black levels of the color separation signals, an IC memory for storing the color separation signals from the level adjusting circuit, a second gradation correction circuit for correcting a gradation of the color separation signals read out from the IC memory, and a color display for simulating and displaying a printed reproduction based on the corrected color separation signals from the second correcting means.

Abstract: This invention relates to a transverse sealing mechanism for use in producing bag-packed products by packing products in tubular film. The transverse sealing mechanism comprises compression-and-heat sealing means and compression-cooling and compression-cutting means disposed immediately below said sealing means, each of these means having a mechanism which can increase its compressive force infinitely. The packed bag transverse sealing mechanism provides for storing and perfect seals.

Abstract: A low-to-high pressure, fusion-welding, press mechanism for vertical packing machines which seals packed products using packing film. The press mechanism comprises a cylinder, a cylinder rod, a circular disc, a plurality of pairs of levers and a pair of sealing substrates having a pair of sealing blades, these members being interconnected to each other to fusion-weld packed products with said pair of sealing blades under desired sealing pressure.

Abstract: The invention is a mechanism for regulating the speed and stroke of a transverse sealing means for a vertical packing machine using tubular film. The mechanism comprises a cranking disc, and elongated transverse rod and a vertical rod, these members being connected adjustably to each other to regulate the movement of the transverse sealing means.

Abstract: The invention provides an apparatus for transversely stretching a film tube at a portion to be transversely sealed and preventing creases from occurring in the transversely sealed portion of the film tube when a product fed in the film tube is separated by a squeeze roll means into a specified amount for one pack and thereafter the film tube is transversely sealed. Butterfly arms which pivotally spread apart in a fan-like manner are used for the stretching means.