WO2005106584A1 - 熱現像装置及び熱現像方法 - Google Patents
熱現像装置及び熱現像方法 Download PDFInfo
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- WO2005106584A1 WO2005106584A1 PCT/JP2005/007420 JP2005007420W WO2005106584A1 WO 2005106584 A1 WO2005106584 A1 WO 2005106584A1 JP 2005007420 W JP2005007420 W JP 2005007420W WO 2005106584 A1 WO2005106584 A1 WO 2005106584A1
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- heating
- film
- heat
- sheet film
- temperature
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
- G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
- G03D13/002—Heat development apparatus, e.g. Kalvar
Definitions
- the present invention relates to a heat development device and a heat development method for visualizing a latent image formed on a sheet film as a photosensitive heat development material.
- Patent Document 2 discloses a method in which a fixed heater divided into three is used instead of the heating drum, and the BC surface (base surface) of the film is slid on the heater to convey while heating.
- An apparatus is disclosed.
- Patent Document 3 discloses a heat developing device that heats a film by passing the film through a slit formed on the outer periphery of a drum.
- Patent Document 4 discloses a miniaturized thermal developing apparatus in which exposure, development, and cooling are continuously performed on one sheet film, and exposure processing and heating processing are performed simultaneously in parallel.
- Patent Document 1 Japanese Patent Publication No. 10-500497
- Patent Document 2 Japanese Patent Application Laid-Open No. 2003-287862
- Patent Document 3 US Patent Specification No. 3739143
- Patent Document 4 JP 2002-162692 A
- the present invention develops a latent image formed on a sheet film by bringing a photosensitive heat developing material into contact with a heating body and transporting the material while heating. It is an object of the present invention to provide a thermal developing method and a thermal developing apparatus capable of suppressing the occurrence of density unevenness when an image is obtained.
- a thermal developing apparatus conveys a sheet film having a photothermographic material coated on one surface of a support substrate while heating the film.
- a heat developing device for visualizing a latent image formed on a sheet film comprising: a heating section for heating the sheet film to a heat development temperature; and a heat retaining section for heating the sheet film heated to the heat development temperature. (Maintaining at the heat development temperature), wherein different heating methods are used for the heating unit and the heating unit.
- the thermal development method according to the present invention is a thermal development method in which a sheet film having a photothermographic material coated on one surface of a supporting substrate is conveyed while heating, and a latent image formed on the sheet film is visualized.
- a heat retaining step wherein different heating methods are used in the temperature raising step and the heat retaining step.
- FIG. 1 is a side view schematically showing a main part of a thermal developing device according to a first embodiment.
- FIG. 2 is a side view schematically showing a main part of a thermal developing device according to a second embodiment.
- FIG. 3 is a graph showing a temperature profile in a rapid processing method of a heat development process in the heat development apparatuses 1 and 40 of FIGS. 1 and 2.
- FIG. 4 is a side view showing the main configuration of the heat developing device used in Example 1.
- FIG. 5 is a view showing a sensitite curve ( ⁇ curve) showing a relationship between an exposure amount and a density in Example 1 (a) and Comparative Example 1 (b) of the rapid processing.
- FIG. 6 is a view showing a sensitite curve ( ⁇ curve) showing a relationship between an exposure amount and a density in Comparative Example 2 (a) and Comparative Example 3 (b) of a normal process.
- FIG. 7 is a side view showing a configuration of a main part of the thermal developing apparatus used in Example 2.
- Example 2 the heating plate surface temperature at the slit in FIG. 7, the temperature of the wall surface of the heat insulating material facing the heating plate surface, and the air temperature in the slit were measured until the temperature reached the thermal development temperature.
- 4 is a graph showing the relationship between the time and the temperature.
- FIG. 9 is a graph showing changes in film temperature when a film is passed near the surface of a heating plate in a slit and when it is passed near a wall surface of a heat insulating material in Example 2.
- FIG. 10 is a view showing a sensitite curve (y-curve) representing a relationship between an exposure amount and a density obtained in Example 2 and Comparative Example 4.
- FIG. 11 is a graph showing an example of a temperature history curve of a photothermographic film showing a first step and a second step, obtained by the heat developing apparatus of the present embodiment.
- FIG. 12 shows a third embodiment, and is a diagram illustrating a main part of a heat developing device including a heating drum and a facing roller.
- FIG. 13 is a drawing schematically showing a configuration for urging a plurality of opposed rollers of FIG. 12 against a heating drum.
- FIG. 14 shows a modification of the third embodiment, in which a heat developing device including a heating drum and opposed rollers is used. It is a figure which shows the principal part of.
- FIG. 15 shows a fourth embodiment, and is a diagram illustrating a main part of a heat developing device including a heating plate and a facing roller.
- FIG. 16 is a view showing a modification of the fourth embodiment, and showing a main part of a heat developing device including a heating plate and a facing roller.
- FIG. 17 is a view showing another modified example of the fourth embodiment, and showing a main part of a thermal imaging device using a heating plate and opposed rollers.
- FIG. 18 shows the fifth embodiment, and is a diagram illustrating a main part of a thermal developing device including a heating plate and a belt.
- FIG. 19 is a view showing a modification of the fifth embodiment and showing a main part of a heat developing device using a heating plate and a belt.
- a thermal developing apparatus is a thermal developing apparatus for conveying a sheet film having a photothermographic material coated on one side of a support substrate while heating the sheet film to visualize a latent image formed on the sheet film. And a heating unit that heats the sheet film to a heat development temperature, and a heat insulation unit that keeps the sheet film heated to the heat development temperature, the heating unit and the heat insulation unit Is characterized by using a different heating method.
- the heat development process can employ a separate configuration for the temperature raising section and the heat retaining section, and the temperature raising section reduces the close contact between the heating means such as a heating member and the sheet film.
- the use of different heating methods for the warming section and the warming section which eliminates the need for such close contact in the warming section, maintains high image quality without uneven density.
- the temperature raising unit heats the sheet film while pressing and contacting the sheet film with a plate heater by a facing roller, and the heat retaining unit is provided between at least one guide having a heater.
- the sheet film may be heated in the formed slit.
- the temperature-raising section the sheet film is pressed against the plate heater by the opposing roller and brought into contact, so that the plate heater and the sheet film can be brought into close contact.
- the heat retaining section it is only necessary to transport the sheet while heating (thermally retaining) between the slits with the transport force of the opposed roller of the temperature increasing section, so driving parts for transporting the sheet film are not required, and the precision of the slit dimensions is also required very much. Instead, the size and cost of the device can be reduced.
- the engagement time between the heating section and the heat retaining section with the sheet film can be configured to be 10 seconds or less, so that the period between the heating step and the heat retaining step can be shortened, and the thermal image can be reduced. Rapid processing of the process becomes possible.
- the heating section and the heating section are configured to contact the expected support side and open the coated side of the photothermographic material to heat the sheet film. No.
- the thermal development method according to the present invention is a thermal development method in which a sheet film having a photothermographic material coated on one side of a supporting substrate is conveyed while heating, and a latent image formed on the sheet film is visualized.
- the heat development process can be performed separately in the temperature raising step and the heat retaining step, and the heating means such as a heating member and the sheet film are brought into close contact with each other in the temperature raising step to maintain the temperature.
- the heating means such as a heating member and the sheet film are brought into close contact with each other in the temperature raising step to maintain the temperature.
- the sheet film in the temperature raising step, the sheet film is heated while being pressed against and brought into contact with a plate heater by an opposing roller, and is formed between guides having at least one of the heaters in the heat retaining step. It is preferable to heat the sheet film in the slit formed.
- the sheet film In the temperature raising process, the sheet film is The plate heater and the sheet film can be brought into intimate contact with each other by pressing them against each other, while in the heat retention step, the heat is applied between the slits by the conveying force of the opposing rollers in the temperature rise step, thereby heating (heat retention). Since the sheet is conveyed, a driving part for conveying the sheet film is not required, and the precision of the slit dimension is not required so much, so that the apparatus can be reduced in size and cost can be reduced.
- the engagement time with the sheet film in the temperature raising step and the temperature maintaining step is S 10 seconds or less, the period of the temperature raising step and the temperature maintaining step can be shortened, and the rapid processing of the thermal development process can be performed. Will be possible.
- the sheet film is heated by opening the coated surface of the photothermographic material.
- the heat developing apparatus and the heat developing method of the present invention it is possible to quickly perform a heat developing process and to reduce the size and the cost while maintaining the image quality of a conventional large-sized machine.
- FIG. 1 is a side view schematically showing a main part of the thermal developing device according to the first embodiment.
- the thermal developing apparatus 1 includes an EC surface in which a photothermographic material is coated on one surface of a sheet-like supporting substrate having PET or the like, and an EC surface.
- a sheet film F (hereinafter, referred to as a “film”) having a BC surface on the substrate side is transported in the sub-scanning direction.
- a latent image is formed on the EC surface by light scanning and exposing the light L, and then the film F is heated from the BC surface side to be developed and the latent image is visualized.
- the thermal developing device 1 of FIG. 1 heats the film F on which the latent image is formed from the BC side and raises the temperature to a predetermined thermal developing temperature, and heats the heated film F.
- the heating section is constituted by the temperature raising section 10 and the heat retaining section 13, and the film F is heated to the heat development temperature and maintained at the heat development temperature.
- the temperature raising section 10 includes a first heating zone 11 for heating the film F on the upstream side and a calorie on the downstream side.
- the first heating zone 11 has a flat heating guide 1 lb fixed by a metal material such as aluminum and a silicon rubber heater closely attached to the back of the heating guide 1 lb.
- Heating heater 1 lc and heating guide 1 lb fixed guide surface 1 Id Silicon rubber that is arranged so that the film can be pressed and maintains a gap smaller than the film thickness, and the surface is more heat insulating than metal etc.
- a plurality of opposing rollers 11a having equal strength.
- the second heating zone 12 has a flat heating guide 12b fixed by a metal material such as aluminum, and a flat heating heater also provided by a silicon rubber heater adhered to the back surface of the heating guide 12b.
- 12c and a fixed guide surface 12d of the heating guide 12b are arranged so as to be able to press the film so as to maintain a gap smaller than the film thickness and the surface has a heat insulating property such as silicon rubber which is more heat insulating than metal.
- an opposing roller 12a is arranged so as to be able to press the film so as to maintain a gap smaller than the film thickness and the surface has a heat insulating property such as silicon rubber which is more heat insulating than metal.
- the heat retaining unit 13 includes a planar heating guide 13b fixed by a metal material such as aluminum and the like, a planar heating heater 13c tightly attached to the back surface of the heating guide 13b and a silicon rubber heater, and the like. And a guide portion 13a which is also provided with a heat insulating material and has a predetermined gap (slit) d with respect to a fixed guide surface 13d formed on the surface of the heating guide 13b.
- a film F conveyed from the upstream side of the temperature-raising section 10 by a pair of conveying rollers 16 and the like is fixed by a rotating guide roller 11a.
- the BC surface comes into close contact with the fixed guide surface lid and is conveyed in the direction H while being heated.
- the film F conveyed from the first heating zone 11 is pressed against the fixed guide surface 12d by the respective opposing rollers 12a that are driven to rotate, so that the BC surface is fixed. It is conveyed in the direction H while being heated in close contact with the guide surface lid.
- a concave portion 17 having a V-shaped opening is provided above the second heating zone 12 and the heat retaining portion 13 of the temperature increasing portion 10 so that foreign matter from the temperature increasing portion 10 is in the concave portion 17. It is configured to fall to This can prevent foreign substances from the temperature raising section 10 from being brought into the temperature maintaining section 13 and prevent the film from being jammed with scratches and uneven density.
- the film F conveyed from the second heating zone 12 is heated by heat from the heating guide 13b in a gap d between the fixed guide surface 13d of the heating guide 13b and the guide section 13a. While being (heat-retained), the sheet passes through the gap d by the conveying force of the opposing roller 12a on the second heating zone 12 side.
- the film F is further conveyed in the direction H by the opposing roller 14a while being brought into contact with the cooling guide surface 14c of the cooling plate 14b having the same force as the metal material and cooling.
- the cooling effect can be increased by forming the cooling plate 14b with a finned heat sink structure.
- a cooling plate with a finned heat sink structure is further placed downstream of the cooling plate 14b.
- the film F is fixed in the temperature raising section 10 and the heat retaining section 13 by fixing the BC surface to the fixed guide surfaces lld, 12d, and 13d. It is transported with the EC surface coated with the photothermographic material open.
- the film F is cooled mainly by contacting the cooling guide surface 14c with the BC surface as shown by the dashed line, and is conveyed with the EC surface coated with the heat developing material opened.
- the film F is transported by the opposing rollers 11a and 12a so that the time required to transport the film F through the temperature raising section 10 and the temperature maintaining section 13 is 10 seconds or less. Therefore, the heating time from temperature rise to heat retention is also 10 seconds or less.
- the thermal developing apparatus 1 of FIG. 1 in the temperature raising section 10 where uniform heat transfer is required, the calorie heat guides l lb and 12b and the film F
- the film F is conveyed by securing the contact heat transfer by bringing the film F into close contact with the fixed guide surfaces lld and 12d by the plurality of opposing rollers 11a and 12a pressed against 12b, so that the entire surface of the film is uniformly heated.
- the finished film becomes a high quality image with reduced density unevenness.
- the film is conveyed by the heat retaining section 13 between the fixed guide surface 13d of the heating guide 13b and the gap d between the guide section 13a, and particularly the fixed guide. Even if heated (heated by direct heat contact with fixed guide surface 13d and heat transfer by contact with Z or surrounding high-temperature air), the film temperature is not It falls within a predetermined range (for example, 0.5 ° C) with respect to the temperature (for example, 123 ° C). like this Even if the film is conveyed along the wall of the heating guide 13b or the wall of the guide portion 13a in the gap d, the film temperature difference is less than 0.5 ° C, and a uniform heat retaining state can be maintained. Almost no density unevenness occurs in the finished film. For this reason, since it is not necessary to provide a driving part such as a roller in the heat retaining section 13, the number of points can be reduced.
- the heating time of the film F can be 10 seconds or less, a rapid thermal development process can be realized, and a film transport path extending linearly from the heating section 10 to the cooling section 14 is provided in the apparatus layout.
- the size of the installation area can be reduced as needed, and the size of the entire device can be reduced.
- the film F is heated from the BC side in a state where the EC surface coated with the photothermographic material is opened in the temperature raising unit 10 and the heat retaining unit 13, so that the heat is rapidly processed in 10 seconds or less.
- the solvent water, organic solvent, etc. contained in Film F, which is heated and volatilizes (evaporates), evaporates in the shortest distance by opening the EC surface side (see Fig. 1). And evaporates upward over the front of the film), so that even if the heating time (volatilizable time) is short, it is not easily affected by the shortening of the heating time.
- the film F and the fixed guide surface l ld, 12 d Even if there is a part with poor contact with the surface, the thermal diffusion effect of the BC base PET base reduces the temperature difference with the part with good contact, and as a result the concentration difference hardly occurs, so the concentration is stabilized Yes, image quality is stable.
- heating on the EC side was considered to be better in general.
- Thermal conductivity of PET for supporting substrate of film F 0.17 W / m ° C, thickness of PET base Considering that the distance is about 170 m, the time delay is slight, and can be easily offset by increasing the heater capacity, etc., and it is preferable that the effect of reducing the above-described uneven contact can be expected. .
- the solvent (moisture, organic solvent, etc.) in the film F is at a high temperature while exiting the heat retaining section 13 and arriving at the cooling section 14, the force of the cooling section 14 tends to evaporate (evaporate). Since the EC surface of the film F is in an open state, the solvent (moisture, organic solvent, etc.) is not trapped in the emulsion layer and is volatilized for a longer time, so that the image quality (density) is more stable. Thus, the cooling time cannot be ignored during rapid processing, and is particularly effective for rapid processing with a heating time of 10 seconds or less.
- FIG. 2 is a side view schematically showing a main part of the thermal developing device according to the second embodiment.
- the thermal developing apparatus 40 includes an EC in which a photothermographic material is coated on one surface of a sheet-like supporting base made of PET or the like as described above. While transporting (sub-scanning) a film F having a surface and a BC surface on the support substrate side opposite to the EC surface, a latent image is formed on the EC surface by the laser beam L from the optical scanning exposure unit 55, and then In addition, the film F is heated from the BC side and developed to visualize the latent image, and is conveyed to the upper portion of the apparatus through a curved conveyance path and discharged.
- the thermal developing device 40 shown in FIG. 2 includes a film storage portion 45 provided near the bottom of the device housing 40a for storing a large number of unused films F, and a top film F of the film storage portion 45.
- Pickup roller 46 that transports film F from pickup roller 46, and transport roller pair 47 that transports film F from pickup roller 46, and guides the film F from transport roller pair 47 to form a curved surface so that the transport direction is almost reversed and transported.
- a light scanning exposure unit 55 that forms a latent image on the EC surface by scanning with the laser beam L.
- the thermal developing device 40 further heats the film F on which the latent image is formed from the BC side and raises the temperature to a predetermined thermal developing temperature, and heats the heated film F.
- Insulating section 53 that keeps the heated film F at a predetermined heat development temperature
- a cooling section 54 that cools the heated film F from the BC side
- a densitometer that is located at the outlet side of the cooling section 54 and measures the density of the film F.
- 56 a transport roller pair 57 for discharging the film F from the densitometer 56, and an inclined surface provided on the upper surface of the apparatus housing 40a so that the film F discharged by the transport roller pair 57 is placed thereon.
- fill Storage section 58 fill Storage section 58.
- the film storage portion 45, the substrate portion 59 including the transport control substrate and the exposure control substrate, and the transport roller pair 49 a are directed upward from the bottom of the device housing 40 a.
- film storage section 45 is at the bottom
- substrate section 59 is located between heating section 50 and insulation section 53
- the optical scanning exposure section 55 does not expose the film F.
- heat development and heating are performed in heating section 50 and heat retaining section 53.
- a heating unit is constituted by the temperature raising unit 50 and the heat retaining unit 53, and the film F is heated to the heat development temperature and maintained at the heat development temperature.
- the temperature raising section 50 has a first heating zone 51 for heating the film F on the upstream side, and a second heating zone 52 for heating the film F on the downstream side.
- the first heating zone 51 includes a planar heating guide 51b fixed by the force of a metal material such as aluminum, and a flat heating heater having a silicon rubber heater adhered to the back surface of the heating guide 51b.
- 51c and heating guide 5 lb fixed guide surface 5 Id are arranged so that the film can be pressed and a gap smaller than the film thickness is maintained so that the film can be pressed.
- a plurality of opposed rollers 51a are arranged so that the film can be pressed and a gap smaller than the film thickness is maintained so that the film can be pressed.
- the second heating zone 52 includes a flat heating guide 52b fixed by a metal material such as aluminum and a flat heating heater also provided by a silicon rubber heater closely attached to the back surface of the heating guide 52b.
- a plurality of members 52c and a fixed guide surface 52d of the heating guide 52b are arranged so as to be able to press the film so as to maintain a gap smaller than the film thickness, and the surface has a heat insulating property such as silicon rubber which is more heat insulating than metal or the like.
- an opposing roller 52a is provided by a metal material such as aluminum and a flat heating heater also provided by a silicon rubber heater closely attached to the back surface of the heating guide 52b.
- a plurality of members 52c and a fixed guide surface 52d of the heating guide 52b are arranged so as to be able to press the film so as to maintain a gap smaller than the film thickness, and the surface has a heat insulating property such as silicon rubber which is more heat insulating than metal or the like.
- the heat retaining unit 53 includes a heating guide 53b fixed by a metal material such as aluminum, a flat heating heater 53c having a force such as a silicon rubber heater adhered to the back surface of the caro heat guide 53b, and a heating guide 53b.
- a guide portion 53a having a heat insulating material on a surface opposite to the film passing surface, which is disposed so as to have a predetermined gap (slit) d with respect to the fixed guide surface 53d formed on the surface of Having.
- the heating section 50 side is It is continuously formed in a planar shape, and is formed in a curved shape at a predetermined curvature from the middle toward the upper side of the apparatus.
- the film F conveyed from the upstream side of the temperature raising section 50 by the pair of conveying rollers 49a, 49b is fixed by the opposed rollers 51a which are driven to rotate.
- the BC surface comes into close contact with the fixed guide surface 5 Id and is heated without being heated.
- the BC surface is fixed by the film F conveyed from the first heating zone 51 being pressed against the fixed guide surface 52d by the respective opposing rollers 52a that are rotationally driven.
- the sheet is conveyed while being heated in close contact with the guide surface 51d.
- a V-shaped concave portion may be provided upward between the second heating zone 52 of the heating section 50 and the heat retaining section 53. Foreign matter from the warming part 50 falls into the recess, so that foreign matter from the heating part 50 can be prevented from being brought into the heat retaining part 53.
- the film F conveyed from the second heating zone 52 is heated by heat from the heating guide 53b in a gap d between the fixed guide surface 53d of the heating guide 53b and the guide section 53a. While being (heat-retained), the sheet passes through the gap d by the conveying force of the opposing roller 52a on the second heating zone 52 side. At this time, the film F is conveyed while gradually changing the direction of the horizontal force in the gap d in the vertical direction, and heads for the cooling unit 54.
- the film F conveyed in a substantially vertical direction from the heat retaining unit 53 is brought into contact with the cooling guide surface 14c of the cooling plate 54b, which also has a metallic material or the like, by the opposed roller 54a to cool the film F.
- Direction force The direction of the film F is gradually changed in the oblique direction to the film mounting portion 58, and the film is conveyed.
- the cooling effect can be increased by forming the cooling plate 54b with a finned heat sink structure.
- a part of the cooling plate 54b may have a heat sink structure with fins.
- the cooled film F that has exited from the cooling unit 54 is measured for density by a densitometer 56, conveyed by a pair of conveying rollers 57, and discharged to the film mounting unit 58.
- the film mounting section 58 can temporarily store a plurality of films F.
- the BC surface faces the fixed guide surfaces 51d, 52d, and 53d in a heated state, and is conveyed in a state where the EC surface coated with the photothermographic material is opened.
- the film F is cooled while the BC surface contacts the cooling guide surface 54c, and the film F is conveyed with the EC surface coated with the heat developing material opened.
- the film F is conveyed by the opposing rollers 51a and 52a such that the time for conveying the film F through the temperature raising unit 50 and the heat retaining unit 53 is 10 seconds or less. Therefore, the heating time from temperature rise to heat retention is also 10 seconds or less.
- the calo heat guides 51b and 52b and the film F are transferred to the kale heat guide 5 lb.
- the film F is conveyed by securing the contact heat transfer by bringing the film F into close contact with the fixed guide surfaces 51d, 52d by a plurality of opposing rollers 51a, 52a pressing against the entire film.
- the finished film becomes a high quality image with reduced density unevenness.
- the film After the temperature of the film is raised to the heat development temperature, the film is conveyed by the film heat retaining portion 53 between the fixed guide surface 53d of the heating guide 53b and the gap d between the guide portion 53a. 5 Even if heated (heated by direct heat contact with fixed guide surface 53d and heat transfer by contact with Z or surrounding high-temperature air), the film temperature is not It falls within a predetermined range (for example, 0.5 ° C) with respect to the temperature (for example, 123 ° C). Thus, regardless of whether the film is conveyed along the wall of the heating guide 53b or the wall of the curved guide 53a in the gap d, the film temperature difference is less than 0.5 ° C, and a uniform heat retaining state can be maintained. Therefore, there is almost no occurrence of density unevenness in the finished film. For this reason, since it is not necessary to provide a driving part such as a roller in the heat retaining unit 53, the number of points can be reduced.
- a predetermined range for example, 0.5 °
- the heating time of the film F can be 10 seconds or less, a rapid thermal development process can be realized, and the heat retaining section 53 extending in the horizontal direction from the temperature raising section 50 is formed into a curved shape from the middle.
- the film F is directed to the vertical direction, and the film F is discharged to the film placement unit 58 with the direction of the film F almost reversed in the cooling unit 54, so that the cooling unit 54 has a predetermined curvature according to the apparatus layout. By doing so, it is possible to reduce the installation area and the size of the entire apparatus.
- the film F is heated from the BC side in a state where the EC surface coated with the photothermographic material is opened in the heating unit 50 and the heat retaining unit 53, so that the heat can be rapidly processed in 10 seconds or less.
- the solvent water, organic solvent, etc. contained in Film F, which is heated and volatilizes (evaporates), evaporates in the shortest distance by opening the EC surface side (see Fig. 1).
- heating on the EC side was considered to be better in general.
- Thermal conductivity of PET for supporting substrate of film F 0.17 W / m ° C, thickness of PET base Considering that the distance is about 170 m, the time delay is slight, and can be easily offset by increasing the heater capacity, etc., and it is preferable that the effect of reducing the above-described uneven contact can be expected. .
- the cooling section 54 attempts to volatilize (evaporate). Since the EC surface of the film F is in an open state, the solvent (moisture, organic solvent, etc.) is not trapped and is volatilized for a longer time, so that the image quality is stabilized. As described above, the cooling time cannot be ignored during rapid processing, and is particularly effective for rapid processing with a heating time of 10 seconds or less.
- FIG. 3 is a graph showing a temperature profile in a rapid processing method of a heat development process in the heat development apparatuses 1 and 40 of FIGS.
- this rapid processing method shortens the heating time B in order to reduce the total processing time A of the film in the thermal developing apparatuses 1 and 40 shown in FIGS. is there.
- the film F is urged by the opposed rollers 11a, 12a, 51a and 52a in the heating sections 10 and 50 for shortening the heating time C up to the optimum development temperature E, and the fixed guide surfaces 11d and Close contact with 12d, 51d, 52d.
- the film F After the film F reaches the development optimum temperature E, the film F is kept at the heat development temperature for the heat retention time D in the heat retaining units 13 and 53.
- the rapid cooling in the cooling unit in FIG. 3 can be realized by disposing a heat sink, a cooling fan, and the like in the cooling units 14 and 54.
- the heating time B (heating time C + heating time D) can be reduced from around 14 seconds in the past to 10 seconds or less, and the total processing time A can be shortened.
- the thermal developing device shown in FIG. 4 was used in the experiment, and the following configuration was adopted.
- a silicon rubber heater was attached to the back surface of an aluminum plate having a thickness of 10 mm to form a plate-shaped heating plate.
- a silicon rubber roller with a diameter of 12 mm and an effective conveyance length of 380 mm with a lmm-thick silicon rubber layer on the surface was arranged so that the linear pressure was about 8 gfZcm.
- the coated film was pressed and transported while the BC surface was in contact with the heating plate.
- the transport length of the heating plate is 21 Omm.
- an aluminum plate having a thickness of 10 mm is used as the first to third cooling plates, and a silicon rubber heater is provided for each of the first and second cooling plates to make it possible to control a cooling temperature.
- a heat sink having 21 fins with a thickness of 0.7 mm, a height of 35 mm and a depth of 390 mm arranged at a pitch of 4 mm was joined to the back side of the aluminum plate of the cooling plate of No. 3.
- a silicon rubber roller with a length of 2 mm and an effective transfer length of 380 mm was placed at a linear pressure of about 8 gfZcm, and the film was transferred while being pressed.
- the transport lengths of the first to third cooling plates are 60 mm, 105 mm, and 105 mm, respectively.
- the transport speed was changed to 15. ImmZs for normal processing and to 21.2 mmZs for rapid processing.
- the temperatures of the first and second heating plates are 100 ° C and 123 ° C respectively, the temperature of the first cooling plate is 110 ° C, the temperature of the second cooling plate is 90 ° C, and the third cooling plate The plate temperature was 30-60 ° C.
- a gap of 2 mm was provided between the heating plates and between the heating plate and the cooling plate to suppress heat transfer between the plates.
- SD-P manufactured by Co-Kaminolta which is an organic solvent-based film for thermal development as disclosed in JP-A-2004-102263 was used.
- Example 1 the emulsion layer surface (EC surface) side coated with the coating liquid was opened, pressed with a silicone rubber roller, and transported while the BC surface was in contact with the heating plate, and the heating time B in FIG. Seconds, heat development was performed (EC surface release 'BC surface heating. Rapid processing).
- Example 2 thermal development was performed under the same conditions as in Example 1 except that the EC side was opened, the BC side was heated, and the normal processing was performed with a heating time B of 14 seconds (EC Surface opening ⁇ BC surface heating ⁇ Normal processing).
- FIGS. 5A and 5B are diagrams showing sensitite curves ( ⁇ curves) showing the relationship between the exposure amount and the density in Example 1 and Comparative Example 1 of the rapid processing.
- FIGS. 6 (a) and 6 (b) show sensitite curves ( ⁇ curves) representing the relationship between the exposure amount and the density in Comparative Examples 2 and 3 of the normal processing.
- FIG. 5A is diagrams showing sensitite curves ( ⁇ curves) showing the relationship between the exposure amount and the density in Example 1 and Comparative Example 1 of the rapid processing.
- FIGS. 6 (a) and 6 (b) show sensitite curves ( ⁇ curves) representing the relationship between the exposure amount and the density in Comparative Examples 2 and 3 of the normal processing.
- the thermal developing device shown in FIG. 7 was used in the experiment.
- the rubber roller was omitted downstream of the heating system to form a third heating plate, and the film passing portion was formed into a slit shape by covering with a heat insulating material to perform slit heating. Things.
- the slit spacing between the third heating plate and the heat insulating material was 3 mm.
- FIG. 9 shows changes in the film temperature when the film passes through the vicinity of the surface of the heating plate in the slit and when the film passes near the wall surface of the heat insulating material.
- the film temperature drops slightly from the developing temperature of 123 ° C.
- the film temperature is lower than when the film is passed near the surface of the heating plate. In all cases, the temperature was below 0.5 ° C for the set development temperature (123 ° C), and the effect on density was within a negligible range. Therefore, the slit gap of the heat retaining part can be kept within 3 mm, and the tolerance for the curvature error and the mounting accuracy at the time of processing of both guides becomes large, resulting in a great increase in design flexibility.
- FIG. 10 shows a sensitite curve ( ⁇ curve) showing the relationship between the exposure amount and the density obtained at this time.
- a heat development process was performed under the same conditions as in Example 2 except that the heat development apparatus of FIG. 4 was used as Comparative Example 4, and a sensitite curve ( ⁇ curve) showing the relationship between the exposure amount and the density obtained at this time was used.
- Fig. 10 is also shown in Fig. 10.
- FIG. 12 shows the third embodiment, and is a diagram illustrating a main part of a heat developing device including a heating drum and a facing roller.
- FIG. 13 is a diagram schematically showing a configuration for urging the plurality of opposed rollers of FIG. 12 against the heating drum.
- the thermal developing device shown in FIG. 12 is urged to abut a cylindrical heating drum 111 made of metal in which a planar electric heater 119 is disposed, and an outer peripheral surface 120 of the heating drum 111.
- a heat developing unit 110 having a plurality of relatively small-diameter metal opposing rollers 112 to 118 rotatably arranged to face each other; and a V, which is arranged below the heat developing unit 110 and is exposed to light based on image data.
- film photothermographic film
- the cylindrical heating drum 111 is set so that its width direction (the direction perpendicular to the paper surface of Fig. 12) matches the size of the film F in the width direction. Are uniformly heated in the width direction, and are driven to rotate in the rotation direction R.
- each of the opposed rollers 112 to 118 extends along the width direction of the heating drum 111, and is rotatably supported by bearings 112 b to 118 b at both ends of the heating drum 111.
- a plurality of coil springs 112a to 118a as urging members are arranged between the bearings 112b to 118b of the opposed rollers 112 to 118 and the fixed portion on the apparatus housing side, respectively.
- the opposing rollers 112 to 118 are urged against the outer peripheral surface 120 of the heating drum 111 by the coil springs 112a to 118a.
- the biasing force of the coil springs 112a, 113a, 114a of the opposing roller 112 on the most upstream side and the opposing rollers 113, 114 adjacent thereto increases the spring constant, so that the opposing roller on the downstream side is
- the rollers 115 to 118 are stronger than the coil springs 115a to 118a.
- the film F is sent in the upward transport direction V in Fig. 12 and sent to the heating drum 111, and each of the films F is sandwiched between the outer peripheral surface 120 of the heating drum 111 and each of the opposing rollers 112 to 118.
- the heating roller 111 is heated while receiving an urging force from the opposing rollers 112 to 118, and is conveyed by rotation of the heating drum 111 in the rotation direction R, and further conveyed in the conveying direction S from between the most downstream opposing roller 118 and the heating drum 111. It has become so.
- the film F is urged relatively strongly by the coil springs 112a to 114a of which the urging force is strengthened by the opposing rollers 112 to 114 on the upstream side.
- the outer peripheral surface 120 of the drum 111 makes close contact.
- the optical scanning unit 190 in Fig. 12 scans the photothermographic film F in the main scanning direction with the laser light L while conveying the photothermographic film F in the sub-scanning direction. Form a latent image.
- the leading end of the film F is heated and developed by the thermal developing unit 110 while a latent image is formed on the film F by the optical scanning unit 190, thereby shortening the cycle time.
- the section 190 may be disposed apart, and the film on which the latent image has been formed may be heated by the heat developing section 110.
- the heating drum 111 has an elastic layer made of silicon rubber formed on the outer peripheral surface of an aluminum cylindrical tube having a diameter of 140 mm. Then, a smooth surface layer formed by coating a fluorine compound on the elastic layer, and a planar electric heater 119 adhered to the inner peripheral surface can be used.
- the rubber hardness of the silicone rubber in the elastic layer is preferably 50-60 ° in Shore A hardness!
- the opposed rollers 112 to 118 for example, those made of a steel cylinder having a diameter of 8 to 12mm can be used.
- the opposed rollers 112 to 114 on the upstream side have a large heat storage capacity of 12m.
- the biasing force on the heating drum 111 by the coil springs 112a to 114a and the weight of each opposing roller is preferably in the range of 7 to 20 gfZcm. It is preferable that the diameters of 10 mm and 8 mm are alternately arranged, and the biasing force from each opposing roller to the heating drum 111 by the coil springs 115a to 118a and the weight of each opposing roller is preferably in the range of 1 to 7 gfZcm.
- the latent image is formed by exposing and scanning the film F with the laser beam L based on the image data in the optical scanning section 190 to which the thermal image photosensitive film F has been transported.
- the film F on which the latent image is formed is transported in the transport direction V in FIG. 12, and is fed between the outer peripheral surface 120 of the heating drum 111 and the most upstream facing roller 112. Due to 111, the sheet is sequentially conveyed from the opposing roller 112 to the opposing rollers 113 and 114 adjacent thereto. During this time, the film F reaches the vicinity of the developing temperature T as shown in the first step SO 1 in FIG. In this way, the film F comes into more close contact with the outer peripheral surface 120 by the coil springs 112a to 114a in which the urging force is strengthened by the upstream facing rollers 112 to 114 until the temperature reaches the vicinity of the developing temperature T. Therefore, the amount of heat transfer from the outer peripheral surface 120 to the film F can be maintained substantially constant.
- the film F that has reached the developing temperature T is further heated while receiving an urging force from each of the opposing rollers 115 to 118 while being sandwiched between the outer peripheral surface 120 and each of the opposing rollers 115 to 118.
- the force transported by the rotation of the drum 111 in the rotation direction R During this time, the film F is heated while being maintained at the developing temperature T as shown in step S02 in FIG.
- the film is transported in the transport direction S from between and the film in which the latent image is developed and becomes a visible image is output.
- the film F is a coil whose urging force is strengthened by the upstream facing rollers 112 to 114. Since the springs 112a to 114a make more intimate contact with the outer peripheral surface 120, the film F is in close contact over the entire width of the film F, and the density is hardly reduced.
- the biasing force for each of the opposing rollers is within the range of, for example, 1 to 7 gfZcm, in addition to the gravity component of the roller.
- the urging force of the coil springs 112a, 113a, 114a of the opposed rollers 112, 113, 114 is increased, but depending on the time required to reach the developing temperature T in step SO1 in FIG.
- the opposing roller for increasing the urging force can be set as appropriate.For example, the urging force of the coil springs 112a and 113a of the opposing rollers 112 and 113 may be increased, or the coil springs 112a and 112a of the opposing rollers 112 to 115 may be increased. You can increase the bias of 115a!
- the developing temperature T in FIG. 11 can be set within a range of 100 to 200 ° C., for example, a force that can be appropriately set according to the type of the photothermographic film F.
- the vicinity of the image temperature ⁇ can be set to, for example, a development temperature T ⁇ I ° C.
- FIG. 14 shows a modification of the first embodiment, and is a diagram showing a main part of a heat developing device including a heating drum and a facing roller.
- the heat developing device shown in FIG. 14 is configured such that the upstream facing rollers 121, 122, 123 of the plurality of facing rollers 121 to 126 arranged opposite to the heating drum 111 are formed on the outer peripheral surface 120 of the heating drum 111.
- the rollers are relatively closely arranged in the circumferential direction and densely arranged, and the opposing rollers 124 to 126 on the downstream side are relatively spaced and roughly arranged. That is, the distance between the opposing rollers 121 and 122 and the distance between the opposing rollers 122 and 123 are relatively close in the circumferential direction, while the distance between the opposing rollers 123 and 124 and the distance between the opposing rollers 124 and 125 are relatively small.
- the distance between the opposed rollers 125 and 126 is relatively large in the circumferential direction.
- each of the opposing rollers 121 to 126 is formed on the outer peripheral surface 1 13, is urged by an urging member which also has a force such as a coil spring, as in FIG.
- the photothermographic film F on which the latent image is formed is transported in the transport direction V of FIG.
- the film is transported between the opposing roller 121 and the adjacent opposing rollers 122 and 123 by the rotating heating drum 111, the film F Since the opposed rollers 121 to 123 on the upstream side are densely arranged in the circumferential direction which is the film traveling direction, the heated outer peripheral surface 120 of the heating drum 111 is heated in close contact.
- the film F and the outer peripheral surface 120 can be brought into more close contact, and the transmission from the outer peripheral surface 120 to the film F can be performed. Since the calorific value can be kept almost constant, the occurrence of uneven density can be effectively suppressed.
- the film F is more closely contacted with the outer peripheral surface 120 by the densely arranged upstream facing rollers 121 to 123, the film F is in close contact with the entire width of the film F, and the density is less likely to decrease. . Also, in the second step S02, which has little effect on the occurrence of density unevenness, there is no need for particularly close contact between the film F and the outer peripheral surface 120, so the downstream facing rollers 124 to 126 are roughly arranged. Is also good.
- the biasing force of the spring may be stronger than on the downstream side. In this case, the urging force of only the coil spring of the opposing roller 121 or the coil springs of the opposing rollers 121 and 122 may be increased.
- FIG. 15 shows a fourth embodiment, and is a diagram illustrating a main part of a heat developing device including a heating plate and a facing roller.
- the thermal developing device of FIG. 15 has planar electric heaters 131b, 132b, and 133b therein as a heat source for heating the film F, and is linear and almost flat in the transport direction H of the film F.
- a plurality of heating plates 131, 132, 133 having guide surfaces 131a, 132a, 133a formed in It includes a plurality of rotationally driven opposing rollers 134 to 136, a plurality of opposing rollers 137 to 139, and a plurality of opposing rollers 140 to 142 for conveying in the feeding direction H.
- an optical scanning unit similar to that shown in FIG. 12 is disposed upstream of the heating plate 131, and forms a latent image on the film F based on image data.
- the plurality of heating plates 131, 132, and 133 are arranged in this order from the upstream side in the transport direction H.
- the guide surfaces 131a, 132a, and 133a of the calorie heat plates 131 to 133 are uniformly heated in the width direction (the direction orthogonal to the transport direction H on the guide surfaces) by the inner planar electric heaters 131b, 132b, and 133b.
- the film F conveyed in the conveying direction H on the guide surfaces 131a, 132a, and 133a in order is heated, and the latent image formed on the film F is developed to form a visible image.
- Each of the guide surfaces 131a to 133a of each of the calorie heat plates 131 to 133 also has a metallic material such as aluminum, and it is preferable that the surfaces thereof be coated with a fluorine compound.
- the plurality of opposing rollers 134 to 142 provided on each of the heating plates 131 to 133 extend in a width direction (perpendicular to the paper surface in FIG. 15) orthogonal to the transport direction H of each of the guide surfaces 131a to 133a. Both ends are urged toward the respective guide surfaces 131a to 133a by coil springs 134a to 142a via bearings 134b to 142b.
- Each of the opposing rollers 137 to 142 can also have a rubber roller force of silicon rubber or the like.
- the urging force of the coil springs 134a to 136a of the plurality of opposed rollers 134 to 136 disposed on the most upstream heating plate 131 is increased, for example, by increasing the spring constant.
- Coil springs of 137 to 142 are stronger than 137a to 142a.
- the biasing force to each heating roller is generated not only by each coil spring but also by the weight of each facing roller, the biasing force is changed by changing the weight of each facing roller. May be.
- the biasing force can be generated and adjusted only by the own weight of the opposing roller without the coil spring.
- the finishing accuracy of each opposing roller is improved so that the opposing roller can be applied to the film in the width direction. Uniform contact can be improved.
- each of the opposing rollers 134 to 136 on the heating plate 131 is preferably in the range of 7 to 20 gfZcm, and the respective opposing rollers 137 to 142 on the downstream heating plates 132 and 133 are preferred.
- the biasing force is preferably in the range of 1 to 7 gfZcm.
- the film F starts to come into contact with the guide surface 131a heated by the electric heater 131b of the heating plate 131 and is heated, thereby reaching the vicinity of the developing temperature T as in the first step S01 in FIG.
- the film F comes into more close contact with the guide surface 131a by the coil springs 134a to 136a whose urging force is strengthened by the opposing rollers 134 to 136 on the upstream side. Therefore, the amount of heat transfer from the guide surface 131a to the film F can be maintained substantially constant.
- the film F which has reached the developing temperature T, is further sandwiched between the guide surfaces 132a, 133a and the respective opposing rollers 137 to 142 by the heating plates 132, 133, and the opposing rollers 137 to 142 are interposed therebetween.
- the film F is heated while being maintained at the developing temperature T as shown in step S02 of FIG.
- the film F is transported in the transport direction H 'from the point where the latent image is developed into a visible image, and the film F is output.
- the film F comes into closer contact with the guide surface 131a by the coil springs 134a to 136a of which the urging force is strengthened by the opposing rollers 134 to 136 on the upstream side, the film F is in close contact with the entire width of the film F. , And a decrease in the concentration hardly occurs.
- the second step S02 which has little influence on the occurrence of density unevenness, there is no need to make particularly close contact between the film F and the guide surfaces 132a, 133a, so that the coil springs 137a to 142a It is sufficient that the urging force for each of the opposing rollers is within the range of 1 to 7 gfZcm, for example, together with the gravity component of the roller.
- FIG. 9 is a view showing a modification of the embodiment, and showing a main part of a heat developing device including a heating plate and a facing roller.
- a plurality of opposed rollers 171 to 174 are densely arranged facing the uppermost stream heating plate 131 in such a manner that upstream forces are also relatively close to the transport direction H in order.
- a single opposing roller 175 is arranged on the downstream heating plate 132, and a single opposing roller 176 is arranged on the downstream heating plate 133. That is, the distance between the opposing rollers 171 and 172, the distance between the opposing rollers 172 and 173, and the distance between the opposing rollers 173 and 174 are relatively close to the transport direction H, respectively, while the distance between the opposing rollers 174 and 175 is relatively small.
- the distance between the roller and the opposed rollers 175 and 176 is relatively far from each other in the transport direction H.
- each of the opposing rollers 171 to 176 is urged by an urging member having a force such as a coil spring so as to be pressed against the guide surfaces 131a to 133a of the heating plates 131 to 133 with the film F interposed therebetween as in FIG. Being done.
- the photothermographic film F on which the latent image is formed is transported in the transport direction H of FIG.
- the force is transferred from the opposite roller 171 to the adjacent opposite rollers 172, 173, and 174 in turn by the rotating opposite rollers. Since the opposed rollers 171 to 174 are densely arranged in the transport direction H of the film F, they are heated in close contact by the heated guide surface 131 a of the heating plate 131.
- the film F and the guide surface 131a can be brought into more close contact, and the heat transfer from the guide surface 131a to the film F can be performed. Since the amount can be maintained substantially constant, the occurrence of density unevenness can be effectively suppressed.
- the film F comes into close contact with the guide surface 131a by the densely arranged upstream facing rollers 171 to 174, the film F adheres tightly over the entire width of the film F, so that a decrease in density is unlikely to occur. Become. Also, in the second step S02, which has little effect on the occurrence of density unevenness, since there is no need for particularly close contact between the film F and the guide surfaces 132a, 133a, the downstream facing rollers 175, 176 are rough. It may be arranged in.
- each of the coil springs of the upstream facing rollers 171 to 174 as shown in FIG. And z or the biasing force due to the weight of each opposing roller may be stronger than that on the downstream side.
- the urging force of only the opposing roller 171, the opposing rollers 171 and 172, or the opposing rollers 171, 172 and 173 may be increased.
- FIG. 17 shows another modification of the fourth embodiment, and is a diagram showing a main part of a heat developing device including a heating plate and a facing roller.
- the thermal developing device shown in FIG. 17 has a gap gl between a plurality of opposed rollers 134 to 136 arranged opposite to the most upstream heating plate 131 and the guide surface 131 a, and an intermediate heating plate 132.
- gl on the upstream side is set to be narrower than gaps g2 and g3 on the downstream side.
- the gaps gl, g2, and g3 can be set by determining the positions of the opposed rollers 134 to 142 with respect to the guide surfaces 131a to 133a, and are set smaller than the thickness of the film F.
- the photothermographic film F on which the latent image is formed is transported in the transport direction H of FIG.
- the film F is conveyed by the rotating opposing rollers sequentially from the opposing roller 134 to the adjacent opposing rollers 135 and 136. Since the rollers 134 to 136 are arranged closer to the guide surface 131a with a narrower gap gl, the rollers 134 to 136 are heated in close contact with the heated guide surface 131a of the heating plate 131.
- the film F and the guide surface 131a can be brought into more close contact, and the heat transfer from the guide surface 131a to the film F can be performed. Since the amount can be maintained substantially constant, the occurrence of density unevenness can be effectively suppressed.
- FIG. 18 shows the fifth embodiment, and is a diagram illustrating a main part of a thermal developing device using a heating plate and a belt.
- the thermal developing device shown in Fig. 18 has end and res- velet 150 force S so as to face the guides of the heating plates 131, 132, 133 arranged in the order of the upstream force and the surfaces 131a, 132a, 133a. It is a rooster.
- the endless belt 150 is stretched around a plurality of pulleys 151 to 154. For example, when the pulley 151 is driven to rotate, it moves endlessly in the direction A.
- the endless velvet 150 approaches the guide surfaces 131a, 132a, and 133a between the pulleys 151 and 152, and moves in the direction A so that the film F between the guide surfaces 13la to 133a. Are transported in the transport direction H with the.
- Press rollers 155, 156 that press the endless belt 150 against the guide surfaces 131a, 132a are disposed relatively upstream of the pulleys 151, 152.
- the pressing rollers 155 and 156 may be urged toward the guide surfaces 131a and 132a by an urging member such as a coil spring as in FIG. 15, for example.
- the photothermographic film F on which the latent image is formed is conveyed in the conveying direction H of FIG. 18, and is moved between the guide surface 131 a of the heating plate 131 and the endless belt 150. Is transported from the guide surface 131a to the guide surfaces 132a and 133a in sequence by the endless belt 150 moving in the direction A. During this time, the film F is pressed against the upstream pressing release rollers 155 and 156. As a result, it is pressed against the end of the S-guide and the surfaces 131a and 132a, and is heated by the heated guide surfaces 131a and 132a of the calo-heat plates 131 and 132 in close contact.
- the film F and the guide surfaces 131a and 132a can be brought into more close contact, and the amount of heat transfer from the guide surfaces 131a and 132a to the film F is almost constant. , The occurrence of density unevenness can be effectively suppressed.
- the film F is brought into more close contact with the guide surfaces 131a and 132a by the pressing rollers 155 and 156 on the upstream side, the film F is in close contact with the entire width of the film F and a decrease in density is unlikely to occur.
- the pressing roller can be omitted on the downstream side.
- the number and arrangement position of the pressing rollers can be appropriately changed.
- FIG. 19 shows a modification of the fifth embodiment, and is a diagram showing a main part of a heat developing device using a heating plate and a belt.
- the heat developing device shown in FIG. 19 has a heating plate 161 arranged at the uppermost stream curved in a convex shape toward the endless belt 150, and a guide surface 161a of the heating plate 161 is curved and curved.
- a planar heater 161b is similarly disposed inside the guide surface 161a along the guide surface 161a.
- the optical scanning unit shown in FIG. 12 is arranged on the upstream side of the heating plate 131.
- the endless belt 150 is disposed along the guide surfaces 161a, 132a, and 133a, and is stretched over a plurality of pulleys 151 to 153. Move in shape.
- the endless belt 150 is close to the guide surfaces 161a, 132a, and 133a between the pulleys 151 and 152, and moves in the direction A so that the film F is sandwiched between the guide surfaces 161a, 132a, and 133a.
- the photothermographic film F on which the latent image is formed is transported in the transport direction B of FIG. 18, and the guide surface 161 a of the curved heating plate 161 and the endless belt
- the endless belt 150 is transported to the guide surfaces 132a and 133a in order from the guide surface 161a by the endless belt 150 moving in the direction A, the endless belt 150 is conveyed by the curved guide surface 161a.
- the film F is pressed against the guide surface 161a, the film F is pressed against the guide surface 161a, so that the film F is heated in close contact with the heated guide surface 161a.
- the film F and the guide surface 161a can be brought into more close contact, and the heat transfer from the guide surface 161a to the film F can be maintained almost constant. In addition, the occurrence of uneven density can be effectively suppressed.
- the film F is more closely contacted with the guide surface 161a by the curved heating plate 161 on the upstream side, the film F is in close contact with the entire width of the film F, and the density does not easily decrease. Also, in the second step S02, which has little effect on the occurrence of density unevenness, there is no need for particularly close contact between the film F and the guide surface 133a.
- the numbers 132 and 133 are fine.
- an organic solvent-based solvent was used in producing a film, but an aqueous solvent can be used.
- a film for thermal development using an aqueous solvent can be produced as follows.
- the organic silver salt-containing layer is applied to a PET film using a coating solution in which 30% by mass or more of the solvent is water, and dried to form a 200 / zm-thick photothermographic film. Make a film.
- the binder of this organic silver salt-containing layer is soluble or dispersible in an aqueous solvent (aqueous solvent), and has a latex power of a polymer having an equilibrium water content of 2% by mass or less at 25 ° C and 60% RH.
- the aqueous solvent in which this polymer is soluble or dispersible is water or a mixture of water and 70% by mass or less of a water-miscible organic solvent.
- water-miscible organic solvent examples include alcohols such as methyl alcohol, ethyl alcohol, and propyl alcohol; cellosolves such as methyl sorb, ethylse sorb and butyl sorb; ethyl acetate and dimethylformamide. Can be mentioned.
- an emulsion layer (photosensitive layer) coating solution is prepared as follows. Pigment-1 dispersion, organic polyhalogenated compound-1 dispersion, organic polyhalogen compound-2 dispersion, phthalazinedified compound 1 solution, SBR latex (Tg: 17 ° C) in 100 g of fatty acid silver dispersion and 276 ml of water ) Liquid, reducing agent 1 dispersion, reducing agent 2 dispersion, hydrogen bonding compound 1 dispersion, development accelerator 1 dispersion, development accelerator 2 dispersion, color tone adjuster 1 dispersion, mercapto compound 1 aqueous solution, mercapto Aqueous solution 2 is sequentially added, and a silver halide mixed emulsion is added immediately before coating, and the well-mixed emulsion layer coating solution is directly fed to a coating die for coating.
- the heat developing apparatus and the heat developing method of the present invention it is possible to quickly perform a heat developing process and to reduce the size and the cost while maintaining the image quality of a conventional large-sized machine.
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Abstract
Description
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Cited By (1)
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WO2007080877A1 (ja) * | 2006-01-16 | 2007-07-19 | Konica Minolta Medical & Graphic, Inc. | 熱現像感光材料及び熱現像感光材料の熱現像処理方法 |
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JPS5062653A (ja) * | 1973-10-05 | 1975-05-28 | ||
JPH0377945A (ja) * | 1989-08-21 | 1991-04-03 | Konica Corp | 熱現像画形成装置 |
JPH07234519A (ja) * | 1994-02-22 | 1995-09-05 | Fuji Photo Film Co Ltd | 熱処理装置及び熱重合性感光材料処理装置 |
JPH1069051A (ja) * | 1996-06-20 | 1998-03-10 | Fuji Photo Film Co Ltd | 現像処理装置 |
JP2000047359A (ja) * | 1998-05-28 | 2000-02-18 | Fuji Photo Film Co Ltd | 熱現像装置 |
JP2000321743A (ja) * | 1998-09-03 | 2000-11-24 | Fuji Photo Film Co Ltd | 熱処理装置及びそれを利用した熱現像装置 |
JP2000321746A (ja) * | 1999-05-07 | 2000-11-24 | Konica Corp | 画像形成装置 |
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US3864709A (en) * | 1973-10-04 | 1975-02-04 | Tektronix Inc | Apparatus for processing recording material |
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2005
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- 2005-04-19 WO PCT/JP2005/007420 patent/WO2005106584A1/ja active Application Filing
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JPS5062653A (ja) * | 1973-10-05 | 1975-05-28 | ||
JPH0377945A (ja) * | 1989-08-21 | 1991-04-03 | Konica Corp | 熱現像画形成装置 |
JPH07234519A (ja) * | 1994-02-22 | 1995-09-05 | Fuji Photo Film Co Ltd | 熱処理装置及び熱重合性感光材料処理装置 |
JPH1069051A (ja) * | 1996-06-20 | 1998-03-10 | Fuji Photo Film Co Ltd | 現像処理装置 |
JP2000047359A (ja) * | 1998-05-28 | 2000-02-18 | Fuji Photo Film Co Ltd | 熱現像装置 |
JP2000321743A (ja) * | 1998-09-03 | 2000-11-24 | Fuji Photo Film Co Ltd | 熱処理装置及びそれを利用した熱現像装置 |
JP2000321746A (ja) * | 1999-05-07 | 2000-11-24 | Konica Corp | 画像形成装置 |
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WO2007080877A1 (ja) * | 2006-01-16 | 2007-07-19 | Konica Minolta Medical & Graphic, Inc. | 熱現像感光材料及び熱現像感光材料の熱現像処理方法 |
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